CN223096813U - An activated carbon regeneration heating system - Google Patents
An activated carbon regeneration heating systemInfo
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- CN223096813U CN223096813U CN202421989841.5U CN202421989841U CN223096813U CN 223096813 U CN223096813 U CN 223096813U CN 202421989841 U CN202421989841 U CN 202421989841U CN 223096813 U CN223096813 U CN 223096813U
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- heating
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Abstract
The utility model provides an active carbon regenerative heating system, which can recycle an active carbon regenerative heating medium, monitor the operation safety of the regenerative heating system in real time and timely diagnose and warn when a regenerative heating pipe is damaged. The air outlet of the hot blast furnace is connected with the air inlet of the heating section of the regeneration reactor through a pipeline, the air outlet of the heating section of the regeneration reactor is connected with the air inlet of the hot blast furnace through a pipeline, SO that hot air generated in the hot blast furnace is used as an active carbon regeneration heating medium to circulate in the regeneration reactor and the hot blast furnace, a pressure transmitter is arranged in the regeneration reactor, an SO 2 concentration detector and a regeneration outlet CO concentration detector are arranged on the air outlet pipeline of the heating section of the regeneration reactor, and a hot blast furnace outlet CO concentration detector is arranged on the air outlet pipeline of the hot blast furnace, and all the above-mentioned instruments are electrically connected with a controller to judge whether a heating pipe of the regeneration reactor is damaged or not according to detection values of all the instruments.
Description
Technical Field
The utility model belongs to the technical field of comprehensive treatment and energy conservation of flue gas in atmospheric pollution treatment, and relates to an active carbon regeneration heating system with a broken pipe diagnosis function.
Background
The integrated smoke comprehensive treatment technology of activated carbon has been widely used in the prevention, treatment and treatment of atmospheric pollution. Especially in the industries of metallurgy, steel, electric power and the like, the method is used for integrally treating the smoke pollutants in the aspects of smoke desulfurization, denitrification and dust removal, and achieves good effects.
The most of the regeneration of the activated carbon adopts a thermal regeneration method at present, and the saturated activated carbon absorbing pollutants is heated to about 400 ℃ in a heating section of a regeneration reactor, so that the pollutants are decomposed and desorbed, and the activity of the activated carbon is recovered. The active carbon is heated by a dividing wall type heat exchanger, the active carbon is generally in a tube pass, a heating medium is in a shell pass, and the heating medium regenerated and heated by the original active carbon is basically discharged directly after heat exchange with the active carbon, so that the waste of the part of available heat energy is caused.
In addition, in the actual operation process, the heating pipe can be damaged or even broken due to corrosion, abrasion, stress influence and other reasons. Because the heating medium contains a certain amount of oxygen, the heating medium can enter the activated carbon side when the heating pipe is damaged, so that the activated carbon is oxidized, even serious safety accidents such as ignition and the like are caused, and meanwhile, a large amount of chemical loss of the activated carbon can be caused by oxidation. In addition, when the heat exchange tube is broken, a large amount of active carbon enters the shell side heating medium side, and a large amount of CO is generated by oxidation, so that the safety of a heating system pipeline is affected, and even serious production accidents such as explosion are caused. However, the conventional activated carbon regeneration reaction system is difficult to find the breakage and fracture of the heating pipe in time due to the structural limitation, so that the safe operation of the regeneration heating system is difficult to ensure.
Disclosure of utility model
The utility model provides an active carbon regeneration heating system, wherein a heating medium circulation system can enable an active carbon regeneration heating medium to be recycled, and a heating pipe damage diagnosis system can monitor the operation safety of the regeneration heating system in real time, so that when a regeneration heating pipe is damaged, diagnosis and warning can be timely carried out.
The utility model adopts the technical proposal for solving the technical problems that:
the active carbon regeneration heating system comprises a heating medium circulation system and a heating pipe breakage diagnosis system, wherein the heating medium circulation system at least comprises a regeneration reactor and a hot blast stove, an air outlet of the hot blast stove is connected with an air inlet of a heating section of the regeneration reactor through a pipeline, an air outlet of the heating section of the regeneration reactor is connected with an air inlet of the hot blast stove through a pipeline, hot air generated by combustion in the hot blast stove is used as an active carbon regeneration heating medium to circulate in the regeneration reactor and the hot blast stove, and the heating pipe breakage diagnosis system at least comprises a pressure transmitter arranged in the regeneration reactor, an SO 2 concentration detector and a regeneration outlet CO concentration detector which are arranged on an air outlet pipeline of the heating section of the regeneration reactor, a hot blast stove outlet CO concentration detector arranged on an air outlet pipeline of the hot blast stove, and a controller which is respectively and electrically connected with the above instruments and is used for judging whether a heating pipe of the regeneration reactor is broken or not according to detection values of the instruments.
The heating medium circulation system comprises a heating section, a heating medium circulation system and a combustion air heater, wherein the heating section is connected with the heating section through a pipeline, a pressure regulating valve is arranged on a connecting pipeline between the heating section and the heating section, the heating section is connected with an active carbon smoke treatment device through a pipeline, circulating hot air which is discharged outside in excess enters the heating section, the heating section is used for heat exchange and cooling of the heating section, and then is conveyed back to the active carbon smoke treatment device before the desulfurization process, and the heating section is connected with a combustion air inlet of the hot blast stove through a pipeline, so that combustion air is introduced into the hot blast stove.
Further, the heating pipe damage diagnosis system further comprises a hot air circulation pressure detector arranged on the air outlet pipeline of the heating section of the regeneration reactor, and the hot air circulation pressure detector and the pressure regulating valve are electrically connected with the controller.
Further, the controller controls and adjusts the pressure regulating valve according to the pressure detection difference value between the pressure transmitter and the hot air circulation pressure detector.
Further, a hot air circulating fan is arranged on a connecting pipeline between the air outlet of the heating section and the air inlet of the hot air furnace.
Further, a combustion-supporting fan is arranged on a connecting pipeline between the combustion-supporting air heater and the combustion-supporting air inlet of the hot blast stove.
Furthermore, the fuel gas used by the hot blast stove can be at least one of blast furnace gas, coke oven gas, natural gas and converter gas.
The beneficial effects of the utility model include:
Through designing heating medium circulation system for the hot-blast heating medium that the hot-blast stove internal combustion produced as active carbon regeneration can be in regeneration reactor and hot-blast furnace internal recycle, avoided the heat energy waste that directly discharges and lead to after the heating medium heat transfer in traditional method, improved heat energy utilization efficiency. The heating pipe damage diagnosis system is arranged, and through the cooperative work of the pressure transmitter, the SO 2 concentration detector, the regeneration outlet CO concentration detector, the hot-blast furnace outlet CO concentration detector, the controller and other equipment, whether the heating pipe is damaged or not can be monitored and judged in real time, namely if the pressure value detected by the pressure transmitter in the regeneration reactor is suddenly reduced and any one of the following two conditions is met, the heating pipe damage is judged, wherein the condition (1) is that the difference value between the regeneration outlet CO concentration and the hot-blast furnace outlet CO concentration exceeds 50mg/m 3, the condition (2) is that the SO 2 concentration in hot air in the regeneration reactor exceeds a set value, and therefore the operation safety of the regeneration heating system can be monitored in real time, diagnosis and warning can be timely obtained when the regeneration heating pipe is damaged, operators are prompted to timely process, and the safety and stability of the system are improved.
In addition, the heating medium circulation system is also provided with a combustion air heater, so that the circulating hot air discharged outside in excess can be used for heating the combustion air, and meanwhile, the hot air after heat exchange with the combustion air is conveyed back to the active carbon smoke treatment device for treatment before the desulfurization process, thereby ensuring that no waste gas is directly discharged by the regenerative heating system, and being environment-friendly and energy-saving. And the pressure transmitter in the regeneration reactor is used for detecting the pressure P1 in the regeneration reactor, the hot air circulating pressure detector is used for detecting the pressure P2 of circulating hot air out of the regeneration reactor, and the controller is used for controlling the pressure difference P1-P2 to be more than 200Pa by adjusting the opening of the pressure regulating valve so as to ensure that the pressure of the circulating hot air is lower than the pressure in the regeneration reactor.
Drawings
FIG. 1 is a schematic diagram of the overall system architecture of the present utility model.
In the figure, a 10-regeneration reactor, a 101-heating section, a 201-hot air circulating fan, a 202-hot blast stove, a 203-combustion-supporting fan, a 204-combustion-supporting air heater, a 30-controller, a 301-SO 2 concentration detector, a 302-pressure transmitter, a 303-hot air circulating pressure detector, a 304-pressure regulating valve, a 305-hot blast stove outlet CO concentration detector and a 306-regeneration outlet CO concentration detector are shown.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Example 1
The embodiment provides an active carbon regeneration heating system with a heating pipe damage diagnosis function, which mainly comprises a heating medium circulation system and a heating pipe damage diagnosis system;
As shown in FIG. 1, the heating medium circulation system comprises a regeneration reactor 10, a hot blast stove 202, a combustion air heater 204, a hot air circulation fan 201, a combustion fan 203 and related pipelines, wherein an air outlet of the hot blast stove 202 is connected with an air inlet of a heating section 101 of the regeneration reactor 10 through a pipeline, an air outlet of the heating section 101 of the regeneration reactor 10 is connected with an air inlet of the hot blast stove 202 through a pipeline, the hot air circulation fan 201 is arranged on the connecting pipeline, hot air generated by combustion in the hot blast stove 202 is used as an active carbon regeneration heating medium to circulate in the regeneration reactor 10 and the hot blast stove 202, the combustion air heater 204 is connected with an air outlet of the heating section 101 of the regeneration reactor 10 through a pipeline, a pressure regulating valve 304 is arranged on the connecting pipeline between the combustion air heater 204 and the combustion air heater 204, the combustion air heater 204 is also connected with an active carbon smoke treatment device through a pipeline, so that the circulating hot air discharged outside enters the combustion air heater 204 and is conveyed back to the active carbon smoke treatment device before a desulfurization procedure of the active carbon smoke treatment device after heat exchange and temperature reduction, the combustion air heater 204 is also connected with the combustion air inlet of the hot blast stove 202 through a pipeline, and the combustion air fan 203 is arranged on the connecting pipeline, so that combustion air is used for introducing combustion air into the combustion air 202.
Based on the above scheme, the hot blast furnace 202 uses one of blast furnace gas, coke oven gas, natural gas and converter gas as fuel, the generated hot air is mixed with circulating hot air, the mixed temperature is 450 ℃, the mixed temperature enters the heating section 101 of the regeneration reactor 10 to exchange heat with active carbon, and the temperature is about 330 ℃, and the mixed temperature is sent into the hot blast furnace 202 for recycling through the hot air circulating fan 201. After the redundant externally discharged circulating hot air enters the combustion air heater 204 to exchange heat with the combustion air, the temperature is reduced to about 120 ℃, and the redundant circulating hot air generated by the regeneration heating system is treated by the active carbon smoke treatment device before the active carbon smoke treatment device is sent back to the desulfurization of the active carbon smoke treatment device, so that no waste gas is directly discharged by the regeneration heating system. The external air is heated by the circulating hot air introduced into the combustion air heater 204 and then pumped into the hot blast stove 202 by the combustion fan 203 to support combustion.
The heating pipe damage diagnosis system comprises a pressure transmitter 302 arranged in the regeneration reactor 10, an SO 2 concentration detector 301, a regeneration outlet CO concentration detector 306 and a hot air circulation pressure detector 303 which are arranged on an air outlet pipeline of the heating section 101 of the regeneration reactor 10, a hot air furnace outlet CO concentration detector 305 arranged on an air outlet pipeline of the hot air furnace 202, and a controller 30 which is respectively and electrically connected with the above-mentioned devices, wherein the controller 30 is also electrically connected with a pressure regulating valve 304. Wherein the controller 30 is controlled by a separate PLC or is extended by a control system of the desulfurization and denitrification device. The controller 30 monitors and records the running state of the equipment in the regenerative heating system, processes and calculates the detected pressure and concentration signals, and carries out logic operation and judgment according to the difference between the detected value and the set value, thereby diagnosing whether the heating pipe is damaged, and if the heating pipe is judged to be damaged, carrying out audible and visual alarm to prompt an operator to process in time. Meanwhile, the controller 30 preferably performs safety interlocking according to the concentration of the fuel gas, and when the detection data of the CO concentration detector 305 at the outlet of the hot blast stove exceeds a set value, the fuel gas and the combustion air of the hot blast stove are closed, so that the safety of the system is ensured.
Based on the above scheme, the pressure transmitter 302 detects the pressure P1 in the regeneration reactor 10, the hot air circulating pressure detector 303 detects the pressure P2 of circulating hot air out of the regeneration reactor, and the controller 30 controls the pressure difference P1-P2 to be more than 200Pa by adjusting the opening of the pressure regulating valve 304, so as to ensure that the hot air pressure is lower than the pressure in the regeneration reactor.
The concentration of CO in hot air at the outlet of the hot air furnace is monitored by a CO concentration detector 305 at the outlet of the hot air furnace, and the concentration of CO in hot air at the outlet of the regeneration is monitored by a CO concentration detector 306 at the outlet of the regeneration. When the heating pipe is damaged, the concentration of CO at the regeneration outlet is larger than that at the outlet of the hot blast stove. Detecting the difference value of the two, if abnormal rise occurs, indicating that the heating pipe is possibly damaged, and setting the difference value to be more than 50mg/m 3, and alarming and reminding. Preferably, the concentration alarm of CO in hot air can be set at the same time, when the concentration exceeds the lower explosion limit by 10%, the system can give an audible and visual alarm, and when the concentration exceeds the lower explosion limit by 20%, the whole regenerative heating system is interlocked to stop.
When the SO 2 concentration in the hot air of the regeneration reactor is detected by the SO 2 concentration detector 301 and the heating pipe is damaged, the SO 2 generated by regeneration enters the heating medium circulation system because the pressure of the hot air is lower than the pressure in the regeneration reactor, SO that the concentration of SO 2 in the hot air is abnormally increased, and the heating pipe is judged to be possibly damaged, and the SO 2 concentration alarm value is set to be 200mg/m 3 in the embodiment.
The heating pipe breakage diagnosis logic is that any one of the following two conditions is satisfied, and the pressure in the regeneration reactor 10 suddenly decreases:
(1) The difference between the concentration of the CO at the regeneration outlet and the concentration of the CO at the outlet of the hot blast stove exceeds 50mg/m 3;
(2) The concentration of SO 2 in the hot air of the regeneration reactor exceeds a set value.
According to the regeneration heating system, the heating medium which is directly discharged from the original redundant regeneration heating section is used for heating combustion air and then is discharged to the desulfurization system to prevent environmental pollution. The system has the advantages that the pressure detection and control valve is arranged on the heating medium circulation pipeline to control the pressure of the heating medium to be lower than the side pressure of the activated carbon in the regeneration reactor, the SO 2 concentration detector and the CO concentration detector are arranged, and the heating pipe damage diagnosis and control system is formed by the controllers together, SO that the whole system has the following advantages:
(1) By means of the active carbon regenerative heating system with the heating pipe damage diagnosis function, operation safety of the regenerative heating system is monitored in real time, diagnosis and warning are timely achieved when the regenerative heating pipe is damaged, operators are prompted to timely process the active carbon regenerative heating system, and safety performance is greatly improved.
(2) The explosive substances in the circulating hot air are monitored on line and interlocked, so that the safe operation of the heating system is ensured.
(3) The energy of the externally discharged hot air is recycled, and the hot air is discharged into the inlet of the desulfurization device, so that the heating system is ensured to directly discharge no waste gas, and the environment is protected and energy is saved.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (7)
1. The active carbon regeneration heating system is characterized by comprising a heating medium circulation system and a heating pipe breakage diagnosis system, wherein the heating medium circulation system at least comprises a regeneration reactor (10) and a hot blast stove (202), an air outlet of the hot blast stove (202) is connected with an air inlet of a heating section (101) of the regeneration reactor (10) through a pipeline, an air outlet of the heating section (101) of the regeneration reactor (10) is connected with an air inlet of the hot blast stove (202) through a pipeline, hot air generated by combustion in the hot blast stove (202) is used as an active carbon regeneration heating medium to circulate in the regeneration reactor (10) and the hot blast stove (202), and the heating pipe breakage diagnosis system at least comprises a pressure transmitter (302) arranged in the regeneration reactor (10), an SO 2 concentration detector (301) and a regeneration outlet CO concentration detector (306) which are arranged on an air outlet pipeline of the heating section (101) of the regeneration reactor (10), and a controller (30) which is respectively and electrically connected with the hot blast stove outlet CO concentration detector (305) of the air outlet pipeline of the hot blast stove (202) SO as to judge whether a heating pipe (10) is broken or not according to detection values.
2. The activated carbon regeneration heating system according to claim 1, wherein the heating medium circulation system further comprises a combustion air heater (204), the combustion air heater (204) is connected with an air outlet of the heating section (101) of the regeneration reactor (10) through a pipeline, a pressure regulating valve (304) is arranged on a connecting pipeline between the combustion air heater and the heating section, the combustion air heater (204) is further connected with the activated carbon flue gas treatment device through a pipeline, so that the circulating hot air discharged from the surplus outside enters the combustion air heater (204) to exchange heat with the combustion air and then is conveyed back to the desulfurization process of the activated carbon flue gas treatment device, and the combustion air heater (204) is further connected with a combustion air inlet of the hot blast stove (202) through a pipeline so as to introduce the combustion air into the hot blast stove (202).
3. An activated carbon regeneration heating system as claimed in claim 2, characterized in that the heating pipe breakage diagnosis system further comprises a hot air circulation pressure detector (303) provided on the air outlet line of the heating section (101) of the regeneration reactor (10), the hot air circulation pressure detector (303) and the pressure regulating valve (304) being electrically connected to the controller (30).
4. An activated carbon regeneration heating system according to claim 3, characterized in that the controller (30) controls the regulating pressure regulating valve (304) in dependence of a pressure detection difference between the pressure transmitter (302) and the hot air circulation pressure detector (303).
5. An activated carbon regeneration heating system according to claim 1, characterized in that a hot air circulation fan (201) is arranged on the connecting pipeline between the air outlet of the heating section (101) and the air inlet of the hot air stove (202).
6. An activated carbon regeneration heating system as claimed in claim 2, characterized in that a combustion fan (203) is provided in the connection line between the combustion air heater (204) and the combustion air inlet of the stove (202).
7. An activated carbon regeneration heating system according to any one of claims 1 to 6, characterized in that the gas used in the hot blast stove (202) is at least one of blast furnace gas, coke oven gas, natural gas, converter gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421989841.5U CN223096813U (en) | 2024-08-16 | 2024-08-16 | An activated carbon regeneration heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421989841.5U CN223096813U (en) | 2024-08-16 | 2024-08-16 | An activated carbon regeneration heating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223096813U true CN223096813U (en) | 2025-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421989841.5U Active CN223096813U (en) | 2024-08-16 | 2024-08-16 | An activated carbon regeneration heating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223096813U (en) |
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2024
- 2024-08-16 CN CN202421989841.5U patent/CN223096813U/en active Active
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