CN111661819A - Hydrogen production machine gas mixture conversion combustion system - Google Patents

Abstract

The invention discloses a mixed gas reforming combustion system for a hydrogen generator. The combustion chamber is arranged inside the main engine and is arranged coaxially with the main engine, the burner sleeve and the flame guide are arranged horizontally at the upper and lower positions of the combustion chamber, and the steam pipe is arranged vertically at the upper and lower positions of the combustion chamber. The combustion chamber jacket passes through the water jacket and the catalytic reaction chamber. The top of the catalytic reaction chamber is provided with a hydrogen accumulation output layer, one side is provided with a hydrogen outlet, and the bottom of the combustion chamber is provided with an air intake combustion-supporting structure and a hydrogen intake channel. The radiant heat of the middle combustion chamber is used as a heat source to provide heating reaction conditions for the methanol-water mixed solution and catalyst in the water jacket. The solution vapor enters the three-layer catalytic reaction chamber through the steam pipe and is converted into combustible hydrogen and methane gas. The hydrogen gas enters the combustion chamber for combustion. As a heat source, the mixed solution and the catalyst maintain the working temperature. Under the condition of continuously replenishing the amount of the mixed solution in the water jacket, it can continuously circulate and react to provide converted hydrogen for the burner fuel combustion.

Description

A hydrogen generator mixed gas conversion combustion system

technical field

The invention relates to the technical field, in particular to a mixed gas conversion combustion system of a hydrogen generator.

Background technique

Industrial production requires a lot of energy, most of which are fossil fuels. At present, 70% of energy consumption comes from industry. Hydrogen energy can be used as a new type of energy to replace fossil fuels due to its high calorific value, cleanliness and environmental protection. In addition, methanol and steam Reforming is a reaction technology for producing hydrogen. The components after conversion reaction are H ₂ , CO, CO ₂ and CH ₄ . The calorific value of hydrogen is as high as 142351KJ/kg, which is the highest among all fossil fuels, chemical fuels and biofuels. , in the prior art, CO ₂ occupies 1/4 of the content of the components after methanol and steam reforming for hydrogen production. CO ₂ is a carbon-oxygen compound, which is chemically inactive, has high thermal stability, and cannot be combusted. Therefore, How to make use of CO ₂ occupying 1/4 of the content to make it into combustible gas is also an urgent problem to be solved by those skilled in the relevant fields.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problems, the technical solution provided by the present invention is: a mixed gas conversion combustion system of a hydrogen generator, comprising a main engine, a combustion chamber, a hydrogen storage buffer tank, a water jacket, a catalytic reaction chamber, a multi-tube steam pipe, and a flame guide. A cylinder, a burner sleeve, and an air intake combustion-supporting structure. The combustion chamber is arranged inside the main engine and is coaxial with the main engine. The cavity jacket between the inner wall of the main engine and the outer wall of the combustion engine is divided into a water jacket from top to bottom. , catalytic reaction chamber, reaction gas chamber, the burner sleeve and the flame guide are horizontally arranged at the upper and lower positions of the combustion chamber, one end of the burner sleeve is communicated with the combustion chamber for placing the combustion burner, and the other end passes through the catalytic The reaction chamber is communicated with the outside world, one end of the flame guiding tube is communicated with the combustion chamber, and the other end is communicated with the outside world through the water jacket. , one end extends into the reaction gas chamber, the other end extends into the top of the water jacket, the top of the catalytic reaction chamber is provided with a hydrogen output layer, one side is provided with a hydrogen outlet, and the bottom of the combustion chamber is provided with an air intake combustion-supporting structure and hydrogen inlet.

As an improvement, the catalytic reaction chamber is, from bottom to top, a lower reaction chamber, a middle reaction chamber, and an upper reaction chamber, the lower reaction chamber is equipped with a methanol-steam reforming hydrogen production catalyst, and the middle reaction chamber is equipped with CO-water Steam shift reaction catalyst, the upper reaction chamber is equipped with CO ₂ -hydromethanation shift reaction catalyst.

As an improvement, methanol-water mixed solution is contained in the water jacket, and the mass ratio of methanol to water is 2:8 or 3:7.

As an improvement, the air intake and combustion-supporting structure includes an air storage disc arranged at the lower part of the combustion chamber, the bottom of the combustion chamber is communicated with the air storage disc through a cyclone air duct, and an air inlet pipe is provided at one end of the air storage disc.

As an improvement, an interlayer sealing baffle is arranged between the top of the catalytic reaction chamber and the bottom of the water jacket, and a permeable porous baffle is arranged between the bottom of the catalytic reaction chamber and the gas chamber.

As an improvement, the mixed gas in the conversion reaction of the catalytic reaction chamber enters the hydrogen storage buffer tank through the hydrogen outlet through the hydrogen conduit for compression, and then is introduced into the combustion chamber from the hydrogen conduit and the hydrogen inlet passage.

As an improvement, a cooling outer cylinder is provided on the outer side of the part of the flame guide extending out of the main body.

As an improvement, the implementation method includes the following steps:

(1) A methanol-water mixed solution is placed in the water jacket, a methanol-steam reforming hydrogen production catalyst is placed in the lower reaction chamber, a CO-steam shift reaction catalyst is placed in the middle reaction chamber, and CO ₂ —hydrogenation is placed in the upper reaction chamber Methanation shift reaction catalyst, and each layer is separated by a porous separator;

(2) place the fuel to mix and burn in the combustion chamber, so that the expansion pressure is generated in the combustion chamber to force the combustion flame out of the flame tube, as a heat source, and the temperature of the chamber wall of the combustion chamber forms a high-temperature reaction heat source;

(3) The methanol-water mixed solution in the water jacket and each catalyst in the catalytic reaction chamber are radiated by the chamber wall, and the methanol-water mixed solution forms a mixed solution vapor, which enters the catalytic reaction chamber through multiple steam pipes, and passes through the three-layer reaction are converted into hydrogen and methane gas;

(4) The reacted hydrogen and methane gas enter the combustion chamber for combustion through the hydrogen outlet, the hydrogen conduit, the hydrogen storage buffer tank, the hydrogen transport pipe and the hydrogen inlet channel.

After the above structure is adopted, the present invention has the following advantages: in the present invention, the radiant heat of the combustion chamber is used as a heat source to provide heating reaction conditions for the methanol-water mixed solution and the catalyst in the water jacket, and the solution vapor enters the three-layer catalytic reaction through multiple steam pipes. The combustion chambers are converted into combustible hydrogen and methane gas, and the converted hydrogen enters the combustion chamber for combustion. As a heat source, the mixed solution and the catalyst maintain the working temperature, and the amount of the mixed solution in the water jacket can be continuously replenished. The recycle reaction provides converted hydrogen for burner fuel combustion.

Description of drawings

Fig. 1 is a schematic diagram of the internal structure of a mixed gas reforming combustion system of a hydrogen generator according to the present invention.

Fig. 2 is a schematic diagram of the internal side structure of a mixed gas reforming combustion system of a hydrogen generator according to the present invention.

Fig. 3 is a schematic diagram of the top structure of a mixed gas reforming combustion system of a hydrogen generator according to the present invention.

As shown in the figure: 1. Mainframe, 1.1, Water jacket, 1.2, Catalytic reaction chamber, 1.2a, Lower reaction chamber, 1.2b, Middle reaction chamber, 1.2c, Upper reaction chamber, 1.3, Reaction gas chamber, 2. Combustion Chamber, 3. Steam pipe multi-tube, 4. Flame guide tube, 5. Burner sleeve, 6. Hydrogen outlet, 7. Hydrogen storage buffer tank, 8. Air storage plate, 9. Cyclone duct, 10. Inlet Air duct, 11, interlayer separator, 12, breathable porous separator, 13, cooling outer cylinder, 14, hydrogen inlet channel, 15, hydrogen conducting pipe, 16, hydrogen transport pipe.

Detailed ways

With reference to the accompanying drawings, a mixed gas reforming combustion system of a hydrogen generator includes a main engine 1, a combustion chamber 2, a water jacket 1.1, a catalytic reaction chamber 1.2, a steam pipe multi-tube 3, a flame duct 4, a burner sleeve 5, a storage Hydrogen buffer tank 7, air intake combustion-supporting structure, the combustion chamber 2 is arranged inside the main engine 1 and is arranged coaxially with the main engine 1, the cavity jacket between the inner wall of the main engine 1 and the outer wall of the combustion chamber 2 is divided from top to bottom. For the water jacket 1.1, the catalytic reaction chamber 1.2, and the reaction gas chamber 1.3, the burner sleeve 5 and the flame guide 4 are horizontally arranged at the upper and lower positions of the combustion chamber 2, and one end of the burner sleeve 5 is communicated with the combustion chamber 2 for use When placing the combustion burner, the other end communicates with the outside through the catalytic reaction chamber 1.2, one end of the flame guide 4 communicates with the combustion chamber 2, and the other end communicates with the outside through the water jacket 1.1, and the steam pipe multi-tube 3 is vertical To be disposed in the jacket of the combustion chamber 2 through the water jacket 1.1 and the catalytic reaction chamber 1.2, one end of which extends into the reaction gas chamber 1.3, and the other end extends into the top of the water jacket 1.1. The top of the catalytic reaction chamber 1.2 is provided with a polymer. The hydrogen output layer is provided with a hydrogen outlet 6 on one side, and an air intake combustion-supporting structure and a hydrogen intake channel 14 are provided at the bottom of the combustion chamber 2 .

As a preferred embodiment of this embodiment, the catalytic reaction chamber 1.2 is, from bottom to top, a lower reaction chamber 1.2a, a middle reaction chamber 1.2b, and an upper reaction chamber 1.2c, the lower reaction chamber 1.2a is filled with methanol -Steam reforming hydrogen production catalyst, the middle layer reaction chamber 1.2b is equipped with CO-steam shift reaction catalyst, and the upper layer reaction chamber 1.2c is equipped with CO ₂ -hydromethanation shift reaction catalyst.

As a preferred implementation of this embodiment, the water jacket 1.1 is provided with a methanol-water mixed solution, and the mass ratio of the methanol to water is 2:8 or 3:7.

As a preferred implementation of this embodiment, the air intake combustion-supporting structure includes an air storage disc 8 arranged at the lower part of the combustion chamber 2, and the bottom of the combustion chamber 2 is communicated with the air storage disc 8 through a cyclone duct 9. An air inlet pipe 10 is provided at one end of the air storage disc 8 .

As a preferred embodiment of the present embodiment, an interlayer sealing baffle 11 is arranged between the top of the catalytic reaction chamber 1.2 and the bottom of the water jacket 1.1, and a permeable porous baffle is arranged between the bottom of the catalytic reaction chamber 1.2 and the gas 1.3 12.

As a preferred embodiment of this embodiment, the mixed gas of the catalytic reaction chamber 1.2 conversion reaction enters the hydrogen storage buffer tank 7 from the hydrogen outlet 6 through the hydrogen conduit 15 for compression, and then passes through the hydrogen conduit 16 and the hydrogen inlet channel 14 for compression. Introduce into combustion chamber 2.

As a preferred implementation of this embodiment, a cooling outer cylinder 13 is provided on the outer side of the portion of the flame guide 4 that extends out of the main body 1 .

As the preferred embodiment of this embodiment, its realization method includes the following steps:

(1) A methanol-water mixed solution is placed in the water jacket 1.1, a methanol-steam reforming hydrogen production catalyst is placed in the lower reaction chamber 1.2a, a CO-steam shift reaction catalyst is placed in the middle reaction chamber 1.2b, and the upper layer reacts A CO ₂ -hydromethanation shift reaction catalyst is placed in the chamber 1.2c, and each layer is separated by a porous partition;

(2) place the fuel to mix and burn in the combustion chamber 1.2, so that an expansion pressure is generated in the combustion chamber 1.2 to force the combustion flame out of the flame tube 4, as a heat source, and the temperature of the chamber wall of the combustion chamber 1.2 forms a high-temperature reaction heat source;

(3) The methanol-water mixed solution in the water jacket 1.1 and each catalyst in the catalytic reaction chamber 1.2 are radiated by the chamber wall, and the methanol-water mixed solution forms a mixed solution vapor, which enters the catalytic reaction chamber 1.2 through the steam pipe multi-tube 3 , which are converted into hydrogen and methane gas through the three-layer reaction chamber;

(4) The reacted hydrogen and methane gas enter the combustion chamber 2 through the hydrogen outlet 6, the hydrogen conduit 15, the hydrogen storage buffer tank 7, the hydrogen transmission pipe 16, and the hydrogen inlet channel 14 for combustion, and the combustion of the hydrogen in the combustion chamber 2 makes the combustion chamber 2 burn. The combustion chamber 2 is kept at a high temperature, and under the condition of continuously replenishing the amount of the mixed solution in the water jacket, it can continuously circulate and react to provide converted hydrogen so as to be used for combustion of the burner fuel.

The present invention and its embodiments have been described above, and the description is not restrictive, and what is shown in the accompanying drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it, and without departing from the purpose of the present invention, any structural modes and embodiments similar to this technical solution are designed without creativity, all should belong to the protection scope of the present invention.

Claims (8)

1. a hydrogen generator mixed gas conversion combustion system, is characterized in that, comprises main engine, combustion chamber, hydrogen storage buffer tank, water jacket, catalytic reaction chamber, steam pipe multi-tube, flame guide, burner sleeve, inlet Wind-assisted combustion structure, the combustion chamber is arranged inside the main engine and coaxially arranged with the main engine, the cavity jacket between the inner wall of the main engine and the outer wall of the combustion chamber is divided into a water jacket, a catalytic reaction chamber, and a reaction gas chamber from top to bottom , the burner sleeve and the flame guide are arranged horizontally at the upper and lower positions of the combustion chamber, one end of the burner sleeve is communicated with the combustion chamber for placing the combustion burner, and the other end is communicated with the outside through the catalytic reaction chamber. One end of the flame guiding tube is communicated with the combustion chamber, and the other end is communicated with the outside through the water jacket. The steam pipes are vertically arranged in the combustion chamber jacket and pass through the water jacket and the catalytic reaction chamber, and one end extends into the reaction gas chamber. , the other end extends into the top of the water jacket, the top of the catalytic reaction chamber is provided with a hydrogen-polymerizing output layer, one side is provided with a hydrogen outlet, and the bottom of the combustion chamber is provided with an air intake combustion-supporting structure and a hydrogen intake channel. 2 . The mixed gas reforming combustion system of a hydrogen generator according to claim 1 , wherein the catalytic reaction chamber is a lower-layer reaction chamber, a middle-layer reaction chamber, and an upper-layer reaction chamber in sequence from bottom to top, and the lower-layer reaction chamber is 2. 3 . The chamber is equipped with methanol-steam reforming hydrogen production catalyst, the middle-layer reaction chamber is equipped with CO-steam shift reaction catalyst, and the upper-layer reaction chamber is equipped with CO ₂ -hydromethanation shift reaction catalyst. 3. a kind of hydrogen generator mixed gas conversion combustion system according to claim 1, is characterized in that, described water jacket is equipped with methanol-water mixed solution, and the mass ratio of described methanol and water is 2:8 or 3 :7. 4 . The mixed gas reforming combustion system of a hydrogen generator according to claim 1 , wherein the air intake combustion-supporting structure comprises an air storage disc arranged at the lower part of the combustion chamber, and the bottom of the combustion chamber passes through a cyclone air duct. 5 . It is communicated with an air storage disc, and an air inlet pipe is arranged at one end of the air storage disc. 5 . The mixed gas reforming combustion system of a hydrogen generator according to claim 1 , wherein an interlayer closed baffle is arranged between the top of the catalytic reaction chamber and the bottom of the water jacket, and the bottom of the catalytic reaction chamber is connected to the bottom of the water jacket. 6 . A gas permeable porous partition is arranged between the gas chambers. 6 . The mixed gas reforming combustion system of a hydrogen generator according to claim 1 , wherein the mixed gas of the catalytic reaction chamber reforming reaction enters the hydrogen storage buffer tank through the hydrogen outlet and is compressed from the hydrogen outlet. 7 . The hydrogen transmission pipe and the hydrogen inlet channel are introduced into the combustion chamber. 7 . The mixed gas reforming combustion system of a hydrogen generator according to claim 1 , wherein a cooling outer cylinder is provided on the outer side of the part of the flame guiding tube extending out of the main engine. 8 . 8. a kind of hydrogen generator mixed gas reforming combustion system according to claim 1, its realization method comprises the following steps: (1) A methanol-water mixed solution is placed in the water jacket, a methanol-steam reforming hydrogen production catalyst is placed in the lower reaction chamber, a CO-steam shift reaction catalyst is placed in the middle reaction chamber, and CO ₂ —hydrogenation is placed in the upper reaction chamber Methanation shift reaction catalyst, and each layer is separated by a porous separator; (2) place the fuel to mix and burn in the combustion chamber, so that the expansion pressure is generated in the combustion chamber to force the combustion flame out of the flame tube, as a heat source, and the temperature of the chamber wall of the combustion chamber forms a high-temperature reaction heat source; (3) The methanol-water mixed solution in the water jacket and each catalyst in the catalytic reaction chamber are radiated by the chamber wall, and the methanol-water mixed solution forms a mixed solution vapor, which enters the catalytic reaction chamber through multiple steam pipes, and passes through the three-layer reaction are converted into hydrogen and methane gas; (4) The reacted hydrogen and methane gas enter the combustion chamber for combustion through the hydrogen outlet, the hydrogen conduit, the hydrogen storage buffer tank, the hydrogen transport pipe and the hydrogen inlet channel.

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