CN112029542B - Hydro-gasification system and method - Google Patents

Abstract

The disclosure relates to the technical field of coal hydro-gasification, in particular to a hydro-gasification system and a method, wherein the hydro-gasification system comprises a gasification furnace, a first conveying pipeline, a second conveying pipeline and a third conveying pipeline, wherein a first control component is arranged between the first conveying pipeline and the third conveying pipeline and used for controlling the mass ratio of hydrogen and coal powder conveyed into the gasification furnace; and a second control component is arranged between the first conveying pipeline and the second conveying pipeline and used for controlling the mass ratio of the hydrogen and the oxygen conveyed into the gasification furnace. In the hydro-gasification system provided by the application, through setting up first control unit and second control unit, realized the quality according to the quality control oxygen of hydrogen, avoided the influence of the back flow that the head-on collision produced to oxygen admission volume to realized the accurate control to the hydrogen temperature in the gasifier, guaranteed the rate of rise of temperature of buggy, thereby improved the output of hydrogen and buggy reaction time, improved gasification system's oil yield.

Description

Hydrogenation system and method

technical field

The present disclosure relates to the technical field of coal hydrogenation and gasification, and in particular, to a hydrogenation and gasification system and method.

Background technique

High-temperature hydrogen, oxygen and pulverized coal are respectively introduced into the furnace body through nozzles, and the oxygen and hydrogen undergo a combustion reaction, and the heat generated by the combustion further increases the temperature of the high-temperature hydrogen. The pulverized coal comes from the high-pressure feeding tank. The high-pressure feeding tank and the gasifier maintain a certain pressure difference, and the pulverized coal is transported into the gasifier, and then undergoes an exothermic reaction such as hydrogenation and gasification with high-temperature hydrogen.

When the pulverized coal enters the furnace body through the nozzle, the hydrogen and the pulverized coal collide at the nozzle outlet, and the first reaction occurs to generate coal tar, and then the pulverized coal and the high-temperature hydrogen are fully mixed to further react and release heat to generate light coal. tar. The temperature of the reaction zone gradually increases from top to bottom, but there is a certain backflow in the collision, and the high-temperature gas flows back from the lower part of the reaction zone to the upper part of the reaction zone, which increases the temperature of the upper part of the reaction zone and causes the temperature monitoring equipment in the upper part of the reaction zone. The feedback temperature is higher, which reduces the amount of oxygen in the system, resulting in a lower temperature of the hydrogen in contact with the pulverized coal, which reduces the heating rate of the pulverized coal at the nozzle mouth, resulting in the amount of coal tar produced during the first reaction. less, resulting in a lower overall oil yield.

Therefore, in the prior art, by monitoring the temperature of the upper section of the reaction zone and controlling the amount of oxygen introduced, it is impossible to ensure that the temperature of the hydrogen in contact with the pulverized coal reaches the preset temperature, resulting in a low oil yield of the gasification system as a whole.

SUMMARY OF THE INVENTION

In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a hydrogasification system and method.

The present disclosure provides a hydrogenation gasification system, comprising: a gasifier, a first delivery pipeline for delivering hydrogen into the gasifier, and a second delivery pipeline for delivering oxygen into the gasifier and a third conveying pipeline for conveying pulverized coal into the gasifier; wherein,

A first control component is arranged between the first conveying pipeline and the third conveying pipeline, for controlling the mass ratio of hydrogen and coal powder conveyed into the gasifier;

A second control component is disposed between the first conveying pipe and the second conveying pipe, for controlling the mass ratio of hydrogen and oxygen conveyed into the gasifier.

In the hydrogenation gasification system provided by the present disclosure, the hydrogen is transported to the gasifier through the first transport pipeline, the oxygen is transported to the gasifier through the second transport pipeline, and the oxygen and part of the hydrogen undergo a combustion reaction in the gasifier to release A large amount of heat heats the hydrogen that has not undergone combustion reaction, and the pulverized coal is transported to the gasifier through the third transportation pipeline, and reacts with the high-temperature hydrogen to generate coal tar. In order to ensure that there is sufficient hydrogen in the gasifier to react with the pulverized coal, according to the quality of the pulverized coal introduced into the gasifier, the gasifier can be adjusted by adjusting the first control component to change the ventilation volume of the first conveying pipeline. The quality of hydrogen introduced into the gasifier; in order to heat the temperature of the hydrogen in the gasifier to the preset temperature, according to the quality of the hydrogen introduced, by adjusting the second control part, the ventilation volume of the second conveying pipeline is changed, so as to adjust the gas The quality of oxygen introduced into the gasifier, that is, the amount of oxygen introduced into the gasifier is determined by the amount of hydrogen introduced, which avoids the influence of temperature changes in the gasifier on the amount of oxygen introduced, that is, avoids The impact of the backflow generated by the collision on the amount of oxygen inflow, thus realizing the precise control of the hydrogen temperature in the gasifier, ensuring the heating rate of the pulverized coal, thereby increasing the production of coal tar when the hydrogen and the pulverized coal react, increasing the oil yield of the gasification system.

Optionally, the gasifier is provided with a plurality of nozzles, each of the nozzles includes a first intake channel, a second intake channel and a feed channel, the first intake channel and the first intake channel The conveying pipeline is in communication, the second air inlet channel is in communication with the second conveying pipeline, and the feeding channel is in communication with the third conveying pipeline.

Optionally, the first intake channel, the second intake channel and the feed channel are not communicated with each other.

Optionally, the first air intake passage is surrounded outside the second air intake passage.

Optionally, the axis of each of the nozzles is directed to the axis of the gasifier, so as to form a material collision zone below the nozzles.

Optionally, a side wall of the gasifier is provided with an air inlet, and the air inlet is located below the material collision zone.

Optionally, a heating device is also included, and the heating device communicates with the first conveying pipeline.

The present disclosure also provides a hydrogenation gasification method,

Passing a first mass of hydrogen and a second mass of oxygen into the gasifier;

Passing pulverized coal into the gasifier;

Passing a third mass of hydrogen into the gasifier, so that the ratio of the mass of the hydrogen in the gasifier to the mass of the pulverized coal is within a first preset range, and the mass of the hydrogen is the the sum of the first mass and the third mass;

The fourth mass of oxygen is introduced into the gasifier, so that the ratio of the mass of hydrogen and the mass of oxygen in the gasifier is within the second preset range, and the mass of the oxygen is the first The sum of the second mass and the fourth mass.

Optionally, before the introduction of the first mass of hydrogen and the second mass of oxygen into the gasifier, it also includes:

The hydrogen is heated.

Optionally, before the hydrogen is heated, it also includes:

Determine the mass ratio of the first mass of hydrogen and the second mass of oxygen fed into the gasifier.

Optionally, after the oxygen of the fourth mass is introduced into the gasifier, it also includes:

The temperature is collected below the material collision zone, and when the temperature is higher than the set temperature, hydrogen is introduced.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the accompanying drawings that are required to be used in the description of the embodiments or the prior art will be briefly introduced below. In other words, on the premise of no creative labor, other drawings can also be obtained from these drawings.

FIG. 1 is a schematic structural diagram of a hydrogenation gasification system according to an embodiment of the disclosure;

FIG. 2 is a schematic structural diagram of a nozzle in a hydrogenation gasification system according to an embodiment of the present disclosure;

3 is a schematic structural diagram of a nozzle according to an embodiment of the disclosure;

FIG. 4 is a schematic flow chart of the hydrogasification method according to the embodiment of the disclosure.

Among them, 1-gasifier; 2-first conveying pipeline; 3-second conveying pipeline; 4-third conveying pipeline; 5-first control part; 6-second control part; 7-nozzle; 71-th An air inlet channel; 72 - the second air inlet channel; 73 - the feed channel; 8 - the air inlet; 9 - the heating device; 10 - the water inlet; 11 - the crude gas outlet.

Detailed ways

In order to more clearly understand the above objects, features and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments may be combined with each other under the condition of no conflict.

Many specific details are set forth in the following description to facilitate a full understanding of the present disclosure, but the present disclosure can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present disclosure, and Not all examples.

In the prior art, the quality of oxygen introduced into the gasifier is controlled by monitoring the temperature of the upper section of the reaction zone in the gasifier. Due to the collision of hydrogen and pulverized coal, there is a certain backflow, and the high-temperature gas flows back from the lower section of the reaction zone to the gasifier. The upper section of the reaction zone increases the temperature of the upper section of the reaction zone, resulting in a higher temperature feedback from the temperature monitoring equipment in the upper section of the reaction zone, which reduces the amount of oxygen introduced into the system and cannot guarantee that the temperature of the hydrogen contacting the pulverized coal reaches the preset temperature. As a result, the overall oil yield of the gasification system is low.

FIG. 1 is a schematic structural diagram of a hydrogenation gasification system according to an embodiment of the disclosure; FIG. 2 is a schematic structural diagram of a nozzle in the hydrogenation gasification system according to an embodiment of the disclosure. As shown in FIG. 1 to FIG. 2 , an embodiment of the present disclosure provides a hydrogenation gasification system, including: a gasifier 1 , a first transport pipeline 2 for transporting hydrogen into the gasifier 1 , The second conveying pipeline 3 for conveying oxygen in the gasifier 1 and the third conveying pipeline 4 for conveying pulverized coal into the gasifier 1; The control part 5 is used to control the mass ratio of hydrogen and pulverized coal delivered to the gasifier 1; a second control part 6 is arranged between the first delivery pipeline 2 and the second delivery pipeline 3, used to control the delivery to the gas The mass ratio of hydrogen and oxygen in the furnace 1.

In the hydrogenation gasification system provided by the present disclosure, hydrogen is transported to the gasifier 1 through the first transport pipeline 2 , oxygen is transported to the gasifier 1 through the second transport pipeline 3 , and the oxygen and part of the hydrogen are transported in the gasifier 1 A combustion reaction occurs, releasing a large amount of heat to heat the hydrogen that has not undergone combustion reaction, and the pulverized coal is transported to the gasifier 1 through the third conveying pipeline 4, and reacts with the high-temperature hydrogen to generate coal tar. In order to ensure that there is sufficient hydrogen in the gasifier 1 to react with the pulverized coal, according to the quality of the pulverized coal introduced into the gasifier 1, the ventilation volume of the first conveying pipe 2 is changed by adjusting the first control component 5, thereby Adjust the quality of the hydrogen introduced in the gasifier 1; in order to heat the temperature of the hydrogen in the gasifier 1 to a preset temperature, according to the quality of the hydrogen introduced, by adjusting the second control part 6, change the second delivery pipeline 3 ventilation rate, so as to adjust the quality of the oxygen introduced in the gasifier 1, that is, the amount of oxygen introduced in the gasifier 1 is determined by the amount of hydrogen introduced, avoiding the temperature change in the gasifier 1. The influence of the oxygen input amount, that is, the influence of the backflow generated by the collision on the oxygen input amount is avoided, thereby realizing the precise control of the hydrogen temperature in the gasifier 1, ensuring the heating rate of the pulverized coal, and improving the The production of coal tar when the hydrogen and pulverized coal are reacted increases the oil yield of the gasification system.

The above-mentioned temperature of the hydrogen passed into the gasifier 1 through the first conveying pipeline 2 is not lower than the ignition point of the hydrogen, so that the hydrogen is passed into the gasifier 1 and a combustion reaction occurs when it meets with oxygen, releasing heat, and for no occurrence of The hydrogen in the combustion reaction plays the role of heating, thereby increasing the ambient temperature of the reaction between the pulverized coal and the hydrogen, and improving the efficiency of the reaction between the pulverized coal and the hydrogen.

In order to avoid waste of pulverized coal, hydrogen and oxygen are first introduced into the gasifier 1, and the hydrogen and oxygen undergo a combustion reaction to increase the temperature in the gasifier 1, and the temperature in the gasifier 1 reaches the preset temperature When the coal powder is introduced, the coal powder is contacted and reacted with high temperature hydrogen.

In some embodiments, the gasifier 1 is provided with a plurality of nozzles 7, and each nozzle 7 includes a first intake channel 71, a second intake channel 72 and a feed channel 73. The first intake channel 71 is connected to the first intake channel 71. A conveying pipe 2 is communicated with, the second air inlet passage 72 is communicated with the second conveying pipe 3 , and the feeding passage 73 is communicated with the third conveying pipe 4 .

The nozzle 7 of the above-mentioned gasifier 1 is provided with a first intake channel 71, a second intake channel 72 and a feed channel 73. Hydrogen is input through the first intake channel 71, and oxygen is input through the second intake channel 72. At the air outlets of the first intake channel 71 and the second intake channel 72, hydrogen and oxygen meet, and the hydrogen burns to release heat, which heats the unburned hydrogen and the pulverized coal that enters through the feed channel 73, so that the coal is heated up. The powder reacts with hydrogen to form coal tar.

By arranging a plurality of the above-mentioned nozzles 7, hydrogen and pulverized coal are dispersed and input in the gasifier 1, which increases the contact area of hydrogen and pulverized coal, improves the reaction rate of pulverized coal, and effectively avoids the centralized input of pulverized coal. Part of the pulverized coal cannot be contacted with hydrogen, resulting in waste of the pulverized coal, thereby improving the gasification efficiency of the pulverized coal and reducing the carbon content in the formed slag.

In some embodiments, the hydrogenation gasification system further includes a main conveying route for conveying hydrogen, the main conveying route is provided with a main route regulating valve, and the main route regulating valve controls the flow rate of the main transportation route, and then evenly distributes it to each first transportation pipeline 2. Each second conveying pipeline 3 is controlled by a separate oxygen regulating valve, and the quality of the pulverized coal conveyed in the third conveying pipeline 4 is adjusted by controlling the pressure difference between the feed tank and the gasifier 1 .

The outlet temperature of each nozzle 7 is first calculated according to the change of the pulverized coal delivery amount, and the hydrogen flow rate is calculated by the ratio set by the first control part 5, and the hydrogen flow rate is adjusted by the main circuit regulating valve to keep the hydrogen-to-coal ratio unchanged; then According to the flow rate of hydrogen, the oxygen flow rate is calculated and obtained through the second control part 6, and the oxygen flow rate is adjusted by the oxygen regulating valve of each nozzle 7 to control the reaction temperature at the outlet of each nozzle 7, so that the position of each nozzle 7 is realized. The independent adjustment of the input amount of oxygen, when the input amount of hydrogen changes, the input amount of oxygen can be adjusted according to the input amount of hydrogen in time, so as to ensure that the temperature of hydrogen in the gasifier 1 remains stable.

FIG. 3 is a schematic structural diagram of a nozzle according to an embodiment of the disclosure. As shown in FIG. 3 , specifically, each nozzle 7 is provided with a feed channel 73 , a plurality of first intake channels 71 and a plurality of second intake channels 72 , the first intake channels 71 and the second intake channels 72 and the feed passage 73 are not communicated with each other, and the first air inlet passage 71 is surrounded by the outside of the second air inlet passage 72 .

In this embodiment, the feeding channel 73 is arranged at the center of the nozzle 7, the first air inlet channel 71 is evenly arranged on the outer peripheral side of the feeding channel 73 with the center of the feeding channel 73 as the center of the circle, and the second air inlet channel 72 It is arranged inside the first intake channel 71, and the axes of the first intake channel 71 and the second intake channel 72 are coincident, so that hydrogen and oxygen are at the outlets of the first intake channel 71 and the second intake channel 72. can meet and a combustion reaction occurs, so as to save the space required for hydrogen and oxygen to meet, and to heat the pulverized coal in time to improve the heating efficiency of the pulverized coal; and, it is arranged around the circumferential direction of the feeding channel 73 at the center position. The plurality of first intake passages 71 and the second intake passages 72 undergo combustion reactions at the air outlets of each of the first intake passages 71, so as to improve the heating efficiency of the pulverized coal.

In some embodiments, the axis of each nozzle 7 is directed to the axis of the gasifier 1, and a material collision zone is formed below the nozzle 7, so that the hydrogen and pulverized coal collide in the gasifier 1, so that the hydrogen and The pulverized coal is mixed well for further reaction to produce light coal tar. Therein, the axes of all nozzles 7 may intersect at the same position.

Before the coal powder and the hydrogen collide, the material generated by the reaction between the coal powder and the hydrogen includes coal tar. After the material collides, the material and the hydrogen continue to react to exothermic heat, so that the temperature of the area where the collision point is far away from the nozzle 7 increases with the progress of the reaction. In order to avoid that the heating rate of the reaction area caused by the reaction of materials and hydrogen is too high, resulting in a large amount of coal tar being cracked into methane, the side wall of the gasifier 1 is provided with an air inlet 8, and the air inlet 8 is located in the hydrogen and coal gas. The powder collision area is on the side away from the nozzle 7, that is, the air inlet 8 is located below the material collision area.

The above-mentioned air inlet 8 is communicated with the main conveying path, and the hydrogen in the main conveying path is heated high-temperature hydrogen, that is, the temperature of the hydrogen input from the air inlet 8 is not lower than the ignition point of hydrogen, because the collision zone is far from the area of the nozzle 7. The ambient temperature is greater than the ignition point of hydrogen, and by introducing the above-mentioned high-temperature hydrogen, the area corresponding to the air inlet 8 can be cooled to prevent the temperature in this area from being too high, so as to improve the output of light coal tar; and, by introducing high-temperature hydrogen, The hydrogen content in the collision area and the area close to the nozzle 7 is increased, the contact area between the pulverized coal and the hydrogen gas is further increased, and the reaction rate of the pulverized coal is improved.

In some embodiments, a heating device 9 is also included, and the heating device 9 communicates with the first conveying pipeline 2 .

The above-mentioned heating device 9 is used to heat the hydrogen gas so that the temperature of the hydrogen gas is not lower than its own ignition point when the hydrogen gas is passed into the gasifier 1 , so as to ensure that the hydrogen gas reacts with oxygen in the gasifier 1 .

Specifically, the heating device 9 is communicated with the main conveying path to ensure that the temperature of the hydrogen gas in each first conveying pipeline 2 is not lower than its own ignition point.

Specifically, the gasifier 1 is also provided with a crude gas outlet 11 and a water inlet 10. After the pulverized coal has reacted with hydrogen for a period of time, cold water is introduced into the gasifier 1 through the water inlet 10 to adjust the flow rate of the crude gas at the outlet 11. temperature to terminate the hydrogenation reaction, control the reaction time, and prevent the coal tar generated in the gasifier 1 from cracking into methane, thereby improving the oil yield of the system.

FIG. 4 is a schematic flow chart of the hydrogasification method according to the embodiment of the disclosure. As shown in FIG. 4 , the present disclosure also provides a method for hydrogenation and gasification, which can be performed by all or part of the hydrogenation and gasification system provided in the above embodiments, and the method specifically includes:

Step S101 : introducing a first mass of hydrogen and a second mass of oxygen into the gasifier 1 .

Specifically, the first mass of hydrogen is transported to the gasifier 1 through the first transport pipe 2 and the first inlet passage 71 of the nozzle 7 , and the second mass of oxygen is transported through the second transport pipe 3 and the second inlet of the nozzle 7 . The gas channel 72 is transported to the gasifier 1, so that part of the hydrogen and oxygen are burned and released in the gasifier 1, so as to increase the temperature in the gasifier 1, preheat the gasifier 1, and ensure that the pulverized coal is transported to the gasifier 1. The gasification furnace 1 can react with hydrogen gas to avoid waste of pulverized coal.

Step S102 : feeding pulverized coal into the gasifier 1 .

Specifically, the pulverized coal is sequentially transported into the gasifier 1 through the third transport pipe 4 and the feed channel 73 of the nozzle. In the above-mentioned step S102, the hydrogen and oxygen are kept flowing, and pulverized coal is introduced into the gasifier 1, and the pulverized coal reacts with the high-temperature hydrogen to generate coal tar.

Step S103: Passing a third mass of hydrogen into the gasifier 1, so that the ratio of the mass of the hydrogen in the gasifier 1 to the mass of the pulverized coal is within the first preset range, and the mass of the hydrogen is the first mass and the third mass.

In the above step S103, according to the quality of the pulverized coal introduced into the gasification furnace 1, by adjusting the first control component 5, the ventilation volume of the first conveying pipeline 2 is adjusted, and the third mass of hydrogen is introduced, thereby adjusting the gasification. The quality of the hydrogen introduced into the furnace 1, that is, the quality of the hydrogen introduced into the gasifier 1 is the sum of the hydrogen of the first quality and the hydrogen of the third quality, ensuring that there is sufficient hydrogen and coal in the gasifier 1. powder reaction.

Step S104: Introduce a fourth mass of oxygen into the gasifier 1, so that the ratio between the mass of hydrogen and the mass of oxygen in the gasifier 1 is within the second preset range, and the mass of oxygen is the second mass and The sum of the fourth quality.

In the above-mentioned step S104, according to the quality of the hydrogen introduced, by adjusting the second control part 6, the ventilation volume of the second conveying pipe 3 is changed, and the oxygen of the fourth quality is introduced, thereby adjusting the oxygen introduced in the gasifier 1. , that is, the mass of oxygen introduced into the gasifier 1 is the sum of the second mass of hydrogen and the fourth mass of oxygen, so that the temperature of the hydrogen in the gasifier 1 is heated to a preset temperature range, and maintained at within the preset temperature range.

By adjusting the introduction amount of hydrogen according to the input amount of pulverized coal, it is ensured that there is sufficient hydrogen and pulverized coal contact reaction in the gasifier 1, and by adjusting the introduction amount of oxygen according to the quality of hydrogen, the temperature of hydrogen is guaranteed to be stable Keeping the temperature within the preset temperature range avoids the influence of the backflow generated by the collision on the oxygen inflow, thereby realizing the precise control of the hydrogen temperature in the gasifier 1, ensuring the heating rate of the pulverized coal, and improving the The production of coal tar when the hydrogen and pulverized coal are reacted increases the oil yield of the gasification system.

Specifically, before passing the first mass of hydrogen and the second mass of oxygen into the gasifier 1, the method further includes: heating the hydrogen. Moreover, the temperature of the heated hydrogen is not lower than a preset value of the hydrogen temperature, where the preset value may be the ignition point of the hydrogen.

In the above steps, by raising the hydrogen temperature to not lower than the preset value, and the preset value of the hydrogen temperature can be not lower than the ignition point of hydrogen, the hydrogen gas can be passed into the gasifier 1 when it meets the oxygen. The combustion reaction releases heat and heats the hydrogen that has not undergone combustion reaction, thereby increasing the ambient temperature of the reaction between pulverized coal and hydrogen, and improving the efficiency of the reaction between pulverized coal and hydrogen.

Specifically, before the hydrogen is heated, the method further includes: determining the mass ratio of the hydrogen of the first mass and the oxygen of the second mass into the gasifier.

Before the reaction starts, the mass ratio of the first mass of hydrogen and the second mass of oxygen is set, and then the first mass of hydrogen is heated and transported to the gasifier 1, so that the reaction between the hydrogen and the oxygen increases the gasifier 1. At the same time, the high-temperature hydrogen gas is filled with gasifier 1 to ensure the heating rate after the pulverized coal is added to the gasifier 1, to ensure that the pulverized coal and hydrogen are fully reacted, and to avoid the waste of pulverized coal.

Specifically, after feeding the fourth mass of oxygen into the gasifier 1, the method further includes: collecting the temperature below the material collision zone, and feeding hydrogen when the temperature is higher than the set temperature.

In order to prevent the temperature of the area below the collision zone from being too high, resulting in a decrease in the production of light coal tar, a temperature monitoring component is set in this area to monitor the real-time temperature of the area. When the real-time temperature is higher than the preset maximum temperature, the Hydrogen, in order to achieve the effect of cooling the area and increase the production of light coal tar.

In the above-mentioned steps, the hydrogen gas is introduced into the area below the collision zone through the above-mentioned air inlet 8, and the air inlet 8 is communicated with the main conveying path, and the hydrogen in the main conveying path is heated high-temperature hydrogen, that is, the air inlet 8 inputs. The temperature of the hydrogen gas is not lower than the preset value of the hydrogen temperature. Since the temperature under the collision zone is greater than the preset value of the hydrogen temperature, by passing the above-mentioned high-temperature hydrogen, the area corresponding to the air inlet 8 can be cooled to prevent the The area temperature is too high to improve the production of light coal tar; and, by feeding high-temperature hydrogen, the content of hydrogen in the collision area and the area close to the nozzle 7 is increased, and the contact area between pulverized coal and hydrogen is further increased, The reaction rate of pulverized coal is improved.

Finally, after the pulverized coal has reacted for one end of time, cold water is introduced into the gasifier 1, and the outlet temperature of the gasifier 1 is adjusted to terminate the hydrogenation reaction, control the reaction time, and avoid the cracking of coal tar to generate methane, thereby improving the system performance. oil yield.

Other technical features are the same as the embodiments of the above system, and can bring about the same or similar technical effects, which will not be repeated here. For details, please refer to the description of the above embodiments.

It should be noted that, in this document, relational terms such as "first" and "second" etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these There is no such actual relationship or sequence between entities or operations. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

The above descriptions are only specific embodiments of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (11)

1. A method of hydrogasification using a hydrogasification system, the method comprising:

introducing hydrogen with a first mass and oxygen with a second mass into the gasification furnace (1);

introducing coal powder into the gasification furnace (1);

introducing hydrogen with a third mass into the gasification furnace (1) so that the ratio of the mass of the hydrogen in the gasification furnace (1) to the mass of the pulverized coal is within a first preset range, wherein the mass of the hydrogen is the sum of the first mass and the third mass, and the mass of the hydrogen introduced into the gasification furnace (1) is adjusted according to the mass of the pulverized coal introduced into the gasification furnace (1);

and introducing fourth mass of oxygen into the gasification furnace (1) so that the ratio of the mass of the hydrogen to the mass of the oxygen in the gasification furnace (1) is within a second preset range, wherein the mass of the oxygen is the sum of the second mass and the fourth mass, and the mass of the oxygen introduced into the gasification furnace (1) is adjusted according to the mass of the hydrogen introduced into the gasification furnace (1).

2. The hydrogasification process of claim 1, further comprising, before the passing of the first mass of hydrogen and the second mass of oxygen into the gasifier (1):

the hydrogen gas is heated.

3. The hydro-gasification method of claim 2, further comprising, prior to the heating the hydrogen gas:

and determining the mass ratio of the first mass of hydrogen to the second mass of oxygen fed into the gasification furnace (1).

4. The hydrogasification process according to claim 1, further comprising, after the feeding of the fourth mass of oxygen into the gasification furnace (1):

and (4) collecting the temperature below the material collision area, and introducing hydrogen when the temperature is higher than a set temperature.

5. The hydrogasification process of claim 1, wherein the hydrogasification system comprises: the system comprises a gasification furnace (1), a first conveying pipeline (2) for conveying hydrogen into the gasification furnace (1), a second conveying pipeline (3) for conveying oxygen into the gasification furnace (1) and a third conveying pipeline (4) for conveying coal powder into the gasification furnace (1); wherein,

a first control component (5) is arranged between the first conveying pipeline (2) and the third conveying pipeline (4) and is used for controlling the mass ratio of the hydrogen and the pulverized coal conveyed into the gasification furnace (1);

and a second control component (6) is arranged between the first conveying pipeline (2) and the second conveying pipeline (3) and is used for controlling the mass ratio of the hydrogen and the oxygen conveyed into the gasification furnace (1).

6. The hydrogasification process according to claim 5, wherein the gasifier (1) is provided with a plurality of nozzles (7), each nozzle (7) comprising a first gas inlet channel (71), a second gas inlet channel (72) and a feed channel (73), the first gas inlet channel (71) communicating with the first transfer duct (2), the second gas inlet channel (72) communicating with the second transfer duct (3), the feed channel (73) communicating with the third transfer duct (4).

7. The hydrogasification process of claim 6, wherein the first inlet channel (71), the second inlet channel (72), and the inlet channel (73) are not in communication with each other.

8. The hydrogasification process of claim 7, wherein the first inlet channel (71) is enclosed outside the second inlet channel (72).

9. The hydrogasification process according to claim 6, wherein the axis of each nozzle (7) is arranged pointing towards the axis of the gasifier (1) to form a material collision zone below the nozzle (7).

10. The hydrogasification process according to claim 9, wherein the side wall of the gasifier (1) is provided with an air inlet (8), the air inlet (8) being located below the material collision zone.

11. The hydrogasification process according to any one of claims 5 to 10, wherein the hydrogasification system further comprises a heating device (9), the heating device (9) being in communication with the first transfer conduit (2).

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