Device for producing hydrogen from synthesis gas
By optimizing the component layout of the syngas-to-hydrogen unit and controlling the water-to-gas ratio, the problems of high energy consumption and catalyst aging were solved, achieving efficient conversion reaction control and waste heat recovery, and ensuring long-term stable operation of the unit.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI LONGHUA GRP COAL TECH DEV CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-04-21
AI Technical Summary
Existing syngas-to-hydrogen plants require a large amount of steam to be introduced into the shift converter, resulting in high energy consumption, catalyst aging and shortened lifespan, as well as cumbersome process flow and low waste heat recovery rate, making it difficult to achieve long-term stable operation.
A syngas-to-hydrogen device was designed, including components such as an inlet pipe, a gas-water separator, a gas preheater, a self-heating purification furnace, a shift converter, and a waste heat boiler. By optimizing the water-to-gas ratio and setting up a dosing device and a metering pump, the depth of the shift reaction is controlled, and waste heat is efficiently recovered to prevent catalyst scaling.
Effective control of the reaction depth reduces production energy consumption, improves energy conversion rate, extends catalyst life, simplifies process flow, and achieves stable operation and efficient waste heat recovery.
Smart Images
Figure CN224142209U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of coal chemical equipment and relates to a syngas hydrogen production device. Background Technology
[0002] The crude syngas produced by gasification technology has a high carbon monoxide content, typically between 45% and 60% on a dry basis. To improve the driving force of the crude syngas shift reaction and avoid methanation side reactions, most syngas-to-hydrogen plants currently have a water-to-gas ratio greater than 1.2. To increase the water-to-gas ratio, a large amount of steam needs to be introduced into the shift furnace, which not only consumes a lot of energy but also makes it difficult to control the depth of the reaction, easily causing the shift furnace bed to "runaway" and resulting in adverse effects. At the same time, a high water-to-gas ratio can also easily cause catalyst performance aging and degradation, shortening catalyst life and increasing production and operating costs. It is difficult to achieve long-term stable operation of the production plant, and the process flow is cumbersome with low waste heat recovery and utilization rates. Therefore, a new syngas-to-hydrogen plant is urgently needed. Utility Model Content
[0003] The purpose of this invention is to provide a syngas-to-hydrogen device that solves the problems of existing syngas-to-hydrogen devices requiring the introduction of large amounts of steam into the converter and the "runaway temperature" of the catalyst bed during start-up and shutdown.
[0004] The technical solution adopted in this utility model is a syngas hydrogen production device, including an inlet pipe connected to a gas-liquid separator. The gas-liquid separator is connected in sequence to a gas preheater, a self-heating purification furnace, a first shift converter, a second shift converter, a third shift converter, a waste heat boiler, a demineralized water heater, a water cooler, and an ammonia washing tower via pipelines. The ammonia washing tower is connected to a first outlet pipe. The first shift converter is connected to a steam drum via a second outlet pipe. The steam drum is connected to the gas preheater via a return pipe. A first connecting pipe connects the self-heating purification furnace and the gas-liquid separator. The waste heat boiler is connected to a condenser pipe, and a condensation pump is installed on the condenser pipe.
[0005] The syngas-to-hydrogen device of this invention is also characterized by:
[0006] The steam drum is connected to a first water supply pipe, which is equipped with a fifth regulating valve. The water cooler is connected to a second water supply pipe, which is equipped with a sixth regulating valve. The second converter is connected to a third water supply pipe, which is equipped with a seventh regulating valve. The third converter is connected to a fourth water supply pipe, which is equipped with an eighth regulating valve. The first, second, third, and fourth water supply pipes are all connected to a self-contained pipeline network. An inlet pipe connects the demineralized water heater and the ammonia washing tower.
[0007] Each pipe is equipped with a first regulating valve.
[0008] A second regulating valve is installed on the first connecting pipe.
[0009] A third regulating valve is installed on the return pipe, and a pressure regulating valve is installed on the second outlet pipe.
[0010] An exhaust pipe is connected to the return pipe between the third regulating valve and the gas preheater, and a fourth regulating valve is installed on the exhaust pipe.
[0011] The steam drum is connected to the first dosing device via a second connecting pipe, and the first metering pump is installed on the second connecting pipe.
[0012] The waste heat boiler is connected to a second dosing device via a third connecting pipe, and a second metering pump is installed on the third connecting pipe.
[0013] The first converter is a temperature-controlled converter, while the second and third converters are both axial-radial converters. The demineralized water heater is connected to the fifth water supply pipe, and the gas preheater and the waste heat boiler are connected by a fourth connecting pipe.
[0014] The first converter is equipped with a heat exchanger, which is connected to the second gas outlet pipe. The waste heat boiler is connected to the third gas outlet pipe and the water supply pipe, and the water supply pipe is equipped with the ninth regulating valve.
[0015] The beneficial effects of this utility model are:
[0016] This utility model of a syngas-to-hydrogen device can effectively control the depth of the shift reaction and efficiently recover and utilize the waste heat generated by the shift reaction, effectively reducing production energy consumption and improving energy conversion rate. The shift reaction has high efficiency and a short process flow, which is of great significance to the production and operation of coal chemical plants. By setting up a dosing device and a metering pump, scale inhibitors can be added to the steam drum and waste heat boiler to prevent scaling. Attached Figure Description
[0017] Figure 1 This is a structural diagram of the syngas-to-hydrogen device of this utility model.
[0018] In the diagram, 1. Gas-water separator, 2. Gas preheater, 3. Self-heating purification furnace, 4. Steam drum, 5. First converter, 6. Second converter, 7. Third converter, 8. Waste heat boiler, 9. Demineralized water heater, 10. Water cooler, 11. Ammonia washing tower, 12. First dosing device, 13. First metering pump, 14. First regulating valve, 15. Fourth regulating valve, 16. Second dosing device, 17. Second metering pump, 18. Inlet pipe, 19. First outlet pipe, 20. Second outlet pipe, 21. Return pipe, 22. Exhaust pipe, 23. First connecting pipe. 24. First water supply pipe, 25. Fifth water supply pipe, 26. Second connecting pipe, 27. Third connecting pipe, 28. Second regulating valve, 29. Third regulating valve, 30. Pressure regulating valve, 31. Condensate pipe, 32. Condensate pump, 33. Eighth regulating valve, 34. Third water supply pipe, 35. Second water supply pipe, 36. Fourth water supply pipe, 37. Fifth regulating valve, 38. Seventh regulating valve, 39. Sixth regulating valve, 40. Fourth connecting pipe, 41. Heat exchanger, 42. Third vent pipe, 43. From the pipe network, 44. Ninth regulating valve, 45. Water supply pipe. Detailed Implementation
[0019] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0020] Syngas to hydrogen production unit, refer to Figure 1The system includes an inlet pipe 18, which is connected to a gas-water separator 1. The gas-water separator 1 is connected in sequence via pipes to a gas preheater 2, a self-heating purification furnace 3, a first converter 5, a second converter 6, a third converter 7, a waste heat boiler 8, a demineralized water heater 9, a water cooler 10, and an ammonia washing tower 11. The ammonia washing tower 11 is connected to a first outlet pipe 19. The first converter 5 is connected to a steam drum 4 via a second outlet pipe 20. The steam drum 4 is connected to the gas preheater 2 via a return pipe 21. A first connecting pipe 23 connects the self-heating purification furnace 3 and the gas-water separator 1. The waste heat boiler 8 is connected to a condenser pipe 31, which is equipped with a condenser coil. Pump 32 and steam drum 4 are connected to a first water supply pipe 24, on which a fifth regulating valve 37 is installed. Water cooler 10 is connected to a second water supply pipe 35, on which a sixth regulating valve 39 is installed. Second converter 6 is connected to a third water supply pipe 34, on which a seventh regulating valve 38 is installed. Third converter 7 is connected to a fourth water supply pipe 36, on which an eighth regulating valve 33 is installed. The first, second, third, and fourth water supply pipes 24, 35, 34, and 36 are all connected to a self-contained pipeline network 43. A water inlet pipe 4 connects the demineralized water heater 9 and the ammonia washing tower 11. 6. Each pipe is equipped with a first regulating valve 14, a second regulating valve 28 on the first connecting pipe 23, a third regulating valve 29 on the return pipe 21, and a pressure regulating valve 30 on the second outlet pipe 20. An exhaust pipe 22 is connected to the return pipe 21 between the third regulating valve 29 and the gas preheater 2. A fourth regulating valve 15 is installed on the exhaust pipe 22. The steam drum 4 is connected to a first dosing device 12 via a second connecting pipe 26, and a first metering pump 13 is installed on the second connecting pipe 26. The waste heat boiler 8 is connected to a second dosing device 16 via a third connecting pipe 27, and a second metering pump is installed on the third connecting pipe 27. 17. Scale inhibitors can be added to the steam drum 4 and waste heat boiler 8 via a dosing device and a metering pump to prevent scaling. The first converter 5 is a temperature-controlled converter, while the second converter 6 and the third converter 7 are both axial-radial converters. The demineralized water heater 9 is connected to the fifth water supply pipe 25. A fourth connecting pipe 40 connects the gas preheater 2 and the waste heat boiler 8. A heat exchanger 41 is installed inside the first converter 5, and the heat exchanger 41 is connected to the second gas outlet pipe 20. The waste heat boiler 8 is connected to the third gas outlet pipe 42 and the water supply pipe 45. A ninth regulating valve 44 is installed on the water supply pipe 45, which is used to supplement low-pressure boiler water to the waste heat boiler 8.
[0021] The working process of this utility model:
[0022] Step 1: Saturated crude syngas is sent to gas-liquid separator 1 through inlet pipe 18. Liquid water is separated out using gas-liquid separator 1. 20%-30% of the gas is then fed into gas preheater 2 by adjusting first regulating valve 14 and second regulating valve 28. Gas preheater 2 heats the gas to 250℃-265℃ and then sends it to the catalyst section of self-heating purifier 3. The steam condensate generated by gas preheater 2 is sent to waste heat boiler 8 through fourth connecting pipe 40. The catalyst section of self-heating purifier 3 is equipped with a cobalt-molybdenum based carbon monoxide wide-temperature sulfur-resistant shift catalyst. The temperature of self-heating purifier 3 is controlled at 350℃-400℃. The gas undergoes a shift reaction under the action of the cobalt-molybdenum catalyst, with a shift reaction space velocity of 3200 h⁻¹. -1 -6000h -1 The gas is converted into a shift gas. The shift gas and the gas remaining after separation by the gas-water separator 1 are fed into the detoxification section of the self-heating purification furnace 3. The detoxification section is equipped with a detoxifying agent, which is QBS-02 sulfur-resistant shift protection agent. The detoxifying agent removes carbon black, oxygen, tar, dust, arsenic, phosphorus and chlorine. The self-heating purification furnace 3 preheats the mixed gas to 255℃-275℃ and then sends it into the catalyst section of the first shift furnace 5. The water-to-gas ratio in the mixed gas is 0.2-1.2 to obtain the first shift gas.
[0023] Step 2: The catalyst section of the first shift reactor 5 is equipped with a cobalt-molybdenum based carbon monoxide wide-temperature sulfur-resistant shift catalyst. The bed temperature of the first shift reactor 5 is set to 280℃-310℃. The carbon monoxide in the first shift gas will undergo a shift reaction with water vapor, generating heat simultaneously. The shift reaction space velocity is 3200 h⁻¹. -1 -6000 h -1 Heat is transferred to the steam drum 4 through heat exchanger 41 and second outlet pipe 20. Water is sent to the steam drum 4 from the pipeline network 43 through the first water supply pipe 24. Water vapor at 5.8MPa-7MPa is generated in the steam drum 4. A portion of the water vapor is passed into the gas preheater 2 to continue preheating, while the remaining water vapor is collected through the exhaust pipe 22. The temperature and dry basis content of the first shift gas are measured. When the dry basis content of carbon monoxide in the first shift gas is not greater than 2.34% and the temperature of the first shift gas reaches 270℃-310℃, the first shift gas is passed into the water spray section of the second shift furnace 6. At the same time, water is supplied from the pipeline network 43 through the third water supply pipe 34. The bed temperature of the second shift furnace 6 is set to 240℃-300℃. The temperature of the first shift gas is brought to 230℃-250℃ by water spraying for cooling and humidification, thus obtaining the second shift gas. The second shift gas is then passed into the catalyst section of the second shift furnace 6.
[0024] Step 3: The catalyst section of the second shift furnace 6 is equipped with a cobalt-molybdenum based carbon monoxide wide-temperature sulfur-resistant shift catalyst. The second shift gas undergoes a shift reaction and generates heat. The shift reaction space velocity is 3200 h⁻¹. -1-6000 h -1 The temperature and dry basis content of the second shifted gas were measured. When the dry basis content of carbon monoxide in the second shifted gas was no more than 1% and the temperature of the second shifted gas reached 210℃-240℃, the second shifted gas was introduced into the water spray section of the third shifter 7. At the same time, water was supplied from the pipeline network 43 through the fourth water supply pipe 36. The bed temperature of the third shifter 7 was set to 220℃-270℃. The temperature of the second shifted gas was brought up to 220℃ by water spraying for cooling and humidification, thus obtaining the third shifted gas. The third shifted gas was then introduced into the catalyst section of the third shifter 7. The catalyst section of the third shifter 7 was equipped with a cobalt-molybdenum based carbon monoxide wide-temperature sulfur-resistant shift catalyst. The third shifted gas underwent a shift reaction at a space velocity of 3200 h⁻¹. -1 -6000 h -1 The temperature and dry basis content of the third shift gas are measured. When the dry basis content of carbon monoxide in the third shift gas is not greater than 0.6% and the temperature of the third shift gas reaches 223℃, the third shift gas is introduced into the waste heat boiler 8.
[0025] Step 4: The third shift gas is cooled to 168℃-172℃ by the steam condensate from the waste heat boiler 8. The byproduct 0.5MPa water vapor is collected through the third outlet pipe 42. The third shift gas is then passed into the demineralized water heater 9 for further cooling to 75℃. The third shift gas is then passed into the water cooler 10 for further cooling to 40℃. Water is sent from the pipeline 43 to the inlet of the water cooler 10 through the second water supply pipe 35 to wash the dissolved salt. The third shift gas is then passed into the ammonia washing tower 11 for gas-liquid separation, ammonia washing, and methanol cleaning in sequence. The ammonia washing water is provided by the steam condensate from the waste heat boiler 8 after being pressurized to 7.8MPa by the condensation pump 32. The generated hydrogen gas is collected through the first outlet pipe 19.
[0026] QBS-02 sulfur-resistant shift protectant can be used in conjunction with cobalt-molybdenum based carbon monoxide wide-temperature sulfur-resistant shift catalysts. It not only has high strength but also high porosity and has certain organic sulfur hydrolysis performance, which can extend the service life of cobalt-molybdenum based carbon monoxide wide-temperature sulfur-resistant shift catalysts. When using it, you only need to raise the temperature to the operating conditions. No reduction sulfidation is required, and it does not contain any substances that are harmful to equipment and human health.
[0027] Example 1:
[0028] A syngas-to-hydrogen unit includes an inlet pipe 18 connected to a gas-liquid separator 1. The gas-liquid separator 1 is sequentially connected via pipes to a gas preheater 2, a self-heating purification furnace 3, a first shift converter 5, a second shift converter 6, a third shift converter 7, a waste heat boiler 8, a demineralized water heater 9, a water cooler 10, and an ammonia scrubbing tower 11. The ammonia scrubbing tower 11 is connected to a first outlet pipe 19. The first shift converter 5 is connected to a steam drum 4 via a second outlet pipe 20. The steam drum 4 is connected to the gas preheater 2 via a return pipe 21. A first connecting pipe 23 connects the self-heating purification furnace 3 and the gas-liquid separator 1. The waste heat boiler 8 is connected to a condenser pipe 31, on which a condenser pump 32 is installed. The steam drum 4 is connected to a first water supply pipe 24, on which a fifth regulating valve 37 is installed. The water cooler 10 is connected to a second water supply pipe 35. A sixth regulating valve 39 is installed on the first converter 24. A third water supply pipe 34 is connected to the second converter 6. A seventh regulating valve 38 is installed on the third water supply pipe 34. A fourth water supply pipe 36 is connected to the third converter 7. An eighth regulating valve 33 is installed on the fourth water supply pipe 36. The first water supply pipe 24, the second water supply pipe 35, the third water supply pipe 34, and the fourth water supply pipe 36 are all connected to a self-contained pipeline network 43. An inlet pipe 46 is connected between the demineralized water heater 9 and the ammonia washing tower 11. A third regulating valve 29 is installed on the return pipe 21. A pressure regulating valve 30 is installed on the second gas outlet pipe 20. An exhaust pipe 22 is connected to the return pipe 21 between the third regulating valve 29 and the gas preheater 2. A fourth regulating valve 15 is installed on the exhaust pipe 22. The first converter 5 is a temperature-controlled converter. The second converter 6 and the third converter 7 are both axial-radial converters.
[0029] Example 2:
[0030] The syngas-to-hydrogen unit includes an inlet pipe 18, which is connected to a gas-liquid separator 1. The gas-liquid separator 1 is sequentially connected via pipes to a gas preheater 2, a self-heating purification furnace 3, a first shift converter 5, a second shift converter 6, a third shift converter 7, a waste heat boiler 8, a demineralized water heater 9, a water cooler 10, and an ammonia scrubbing tower 11. The ammonia scrubbing tower 11 is connected to a first outlet pipe 19. The first shift converter 5 is connected to a steam drum 4 via a second outlet pipe 20. The steam drum 4 is connected to the gas preheater 2 via a return pipe 21. A first connecting pipe 23 connects the purification furnace 3 and the gas-water separator 1. The waste heat boiler 8 is connected to a condenser pipe 31, and a condenser pump 32 is installed on the condenser pipe 31. A first regulating valve 14 is installed on each pipe, and a second regulating valve 28 is installed on the first connecting pipe 23. The first converter 5 is a temperature-controlled converter, and the second converter 6 and the third converter 7 are both axial-radial converters. The demineralized water heater 9 is connected to a fifth water supply pipe 25, and a fourth connecting pipe 40 connects the gas preheater 2 and the waste heat boiler 8.
[0031] Example 3:
[0032] The syngas-to-hydrogen unit includes an inlet pipe 18, which is connected to a gas-liquid separator 1. The gas-liquid separator 1 is sequentially connected via pipes to a gas preheater 2, a self-heating purification furnace 3, a first shift converter 5, a second shift converter 6, a third shift converter 7, a waste heat boiler 8, a demineralized water heater 9, a water cooler 10, and an ammonia scrubbing tower 11. The ammonia scrubbing tower 11 is connected to a first outlet pipe 19. The first shift converter 5 is connected to a steam drum 4 via a second outlet pipe 20. The steam drum 4 is connected to the gas preheater 2 via a return pipe 21. A first connecting pipe 23 connects the purification furnace 3 and the gas-water separator 1. The waste heat boiler 8 is connected to a condenser pipe 31, and a condenser pump 32 is installed on the condenser pipe 31. The steam drum 4 is connected to a first dosing device 12 through a second connecting pipe 26, and a first metering pump 13 is installed on the second connecting pipe 26. A heat exchanger 41 is installed inside the first converter 5, and the heat exchanger 41 is connected to a second gas outlet pipe 20. The waste heat boiler 8 is connected to a third gas outlet pipe 42 and a water supply pipe 45, and a ninth regulating valve 44 is installed on the water supply pipe 45.
[0033] Example 4:
[0034] A syngas-to-hydrogen unit includes an inlet pipe 18 connected to a gas-liquid separator 1. The gas-liquid separator 1 is sequentially connected via pipes to a gas preheater 2, a self-heating purification furnace 3, a first shift converter 5, a second shift converter 6, a third shift converter 7, a waste heat boiler 8, a demineralized water heater 9, a water cooler 10, and an ammonia scrubbing tower 11. The ammonia scrubbing tower 11 is connected to a first outlet pipe 19. The first shift converter 5 is connected to a steam drum 4 via a second outlet pipe 20. The steam drum 4 is connected to the gas preheater 2 via a return pipe 21. A first connecting pipe 23 connects the self-heating purification furnace 3 and the gas-liquid separator 1. The waste heat boiler 8 is connected to a condenser pipe 31, on which a condenser pump 32 is installed. The steam drum 4 is connected to a first water supply pipe 24, on which a fifth regulating valve 37 is installed. The water cooler 10 is connected to a second water supply pipe 35, on which a... The sixth regulating valve 39 is connected to the third water supply pipe 34 of the second converter 6. The seventh regulating valve 38 is installed on the third water supply pipe 34. The third converter 7 is connected to the fourth water supply pipe 36. The eighth regulating valve 33 is installed on the fourth water supply pipe 36. The first water supply pipe 24, the second water supply pipe 35, the third water supply pipe 34, and the fourth water supply pipe 36 are all connected to the self-pipeline network 43. The demineralized water heater 9 and the ammonia washing tower 11 are connected by an inlet pipe 46. Each pipe is equipped with a first regulating valve 14. The waste heat boiler 8 is connected to the second dosing device 16 through the third connecting pipe 27. The second metering pump 17 is installed on the third connecting pipe 27. The first converter 5 is equipped with a heat exchanger 41. The heat exchanger 41 is connected to the second gas outlet pipe 20. The waste heat boiler 8 is connected to the third gas outlet pipe 42 and the water supply pipe 45 respectively. The ninth regulating valve 44 is installed on the water supply pipe 45.
[0035] Example 5:
[0036] The syngas-to-hydrogen unit includes an inlet pipe 18, which is connected to a gas-liquid separator 1. The gas-liquid separator 1 is connected in sequence via pipes to a gas preheater 2, a self-heating purification furnace 3, a first shift converter 5, a second shift converter 6, a third shift converter 7, a waste heat boiler 8, a demineralized water heater 9, a water cooler 10, and an ammonia scrubbing tower 11. The ammonia scrubbing tower 11 is connected to a first outlet pipe 19. The first shift converter 5 is connected to a steam drum 4 via a second outlet pipe 20. The steam drum 4 is connected to the gas preheater 2 via a return pipe 21. A first connecting pipe 23 connects the self-heating purification furnace 3 and the gas-liquid separator 1. The waste heat boiler 8 is connected to a condenser pipe 31. A condenser pump 32 is installed on the condenser pipe 31. A second regulating valve 28 is installed on the first connecting pipe 23. A third regulating valve 29 is installed on the return pipe 21. A pressure regulating valve 30 is installed on the second outlet pipe 20.
[0037] Example 6:
[0038] The syngas-to-hydrogen unit includes an inlet pipe 18, which is connected to a gas-liquid separator 1. The gas-liquid separator 1 is sequentially connected via pipes to a gas preheater 2, a self-heating purification furnace 3, a first shift converter 5, a second shift converter 6, a third shift converter 7, a waste heat boiler 8, a demineralized water heater 9, a water cooler 10, and an ammonia scrubbing tower 11. The ammonia scrubbing tower 11 is connected to a first outlet pipe 19. The first shift converter 5 is connected to a steam drum 4 via a second outlet pipe 20. The steam drum 4 is connected to the gas preheater 2 via a return pipe 21. A first connecting pipe 23 connects the self-heating purification furnace 3 and the gas-liquid separator 1. The waste heat boiler 8 is connected to a condenser pipe 31, on which a condenser pump 32 is installed. The steam drum 4 is connected to a first water supply pipe 24, on which a fifth regulating valve 37 is installed. The water cooler 10 is connected to a second water supply pipe 35, on which a sixth regulating valve is installed. The third water supply pipe 34 is connected to the second converter 6 via valve 39. A seventh regulating valve 38 is installed on the third water supply pipe 34. The fourth water supply pipe 36 is connected to the third converter 7. An eighth regulating valve 33 is installed on the fourth water supply pipe 36. The first water supply pipe 24, the second water supply pipe 35, the third water supply pipe 34, and the fourth water supply pipe 36 are all connected to a self-piping network 43. An inlet pipe 46 is connected between the demineralized water heater 9 and the ammonia washing tower 11. A first regulating valve 14 is installed on each pipe. The waste heat boiler 8 is connected to the second dosing device 16 through the third connecting pipe 27. A second metering pump 17 is installed on the third connecting pipe 27. The first converter 5 is a temperature-controlled converter. The second converter 6 and the third converter 7 are both axial-radial converters. The demineralized water heater 9 is connected to the fifth water supply pipe 25. A fourth connecting pipe 40 is connected between the gas preheater 2 and the waste heat boiler 8.
Claims
1. A hydrogen production plant from synthesis gas, characterized in that, The system includes an air inlet pipe (18), which is connected to a gas-water separator (1). The gas-water separator (1) is connected in sequence to a gas preheater (2), a self-heating purification furnace (3), a first converter (5), a second converter (6), a third converter (7), a waste heat boiler (8), a demineralized water heater (9), a water cooler (10), and an ammonia washing tower (11). The ammonia washing tower (11) is connected to a first air outlet pipe (19). The first converter (5) is connected to a steam drum (4) through a second air outlet pipe (20). The steam drum (4) is connected to the gas preheater (2) through a return pipe (21). A first connecting pipe (23) is connected between the self-heating purification furnace (3) and the gas-water separator (1). The waste heat boiler (8) is connected to a condenser pipe (31), and a condenser pump (32) is installed on the condenser pipe (31).
2. The hydrogen production plant from synthesis gas according to claim 1, characterized in that, The steam drum (4) is connected to a first water supply pipe (24), and a fifth regulating valve (37) is installed on the first water supply pipe (24). The water cooler (10) is connected to a second water supply pipe (35), and a sixth regulating valve (39) is installed on the second water supply pipe (35). The second converter (6) is connected to a third water supply pipe (34), and a seventh regulating valve (38) is installed on the third water supply pipe (34). The third converter (7) is connected to a fourth water supply pipe (36), and an eighth regulating valve (33) is installed on the fourth water supply pipe (36). The first water supply pipe (24), the second water supply pipe (35), the third water supply pipe (34), and the fourth water supply pipe (36) are all connected to a self-piping network (43). A water inlet pipe (46) is connected between the demineralized water heater (9) and the ammonia washing tower (11).
3. The hydrogen production plant from synthesis gas according to claim 1, characterized in that, Each pipe is equipped with a first regulating valve (14).
4. The hydrogen production plant from synthesis gas according to claim 1, characterized in that, A second regulating valve (28) is provided on the first connecting pipe (23).
5. The hydrogen production plant from synthesis gas according to claim 1, characterized in that, A third regulating valve (29) is provided on the return pipe (21), and a pressure regulating valve (30) is provided on the second outlet pipe (20).
6. The hydrogen production plant from synthesis gas according to claim 5, characterized in that, An exhaust pipe (22) is connected to the return pipe (21) between the third regulating valve (29) and the gas preheater (2), and a fourth regulating valve (15) is installed on the exhaust pipe (22).
7. The hydrogen production plant from synthesis gas according to any one of claims 1 to 6, characterized in that, The steam drum (4) is connected to a first dosing device (12) via a second connecting pipe (26), and a first metering pump (13) is installed on the second connecting pipe (26).
8. The hydrogen generation plant from synthesis gas according to any one of claims 1 to 6, characterized in that, The waste heat boiler (8) is connected to a second dosing device (16) via a third connecting pipe (27), and a second metering pump (17) is installed on the third connecting pipe (27).
9. The hydrogen production plant from synthesis gas according to any one of claims 1 to 6, characterized in that, The first converter (5) is a temperature-controlled converter, the second converter (6) and the third converter (7) are both axial-radial converters, the demineralized water heater (9) is connected to the fifth water supply pipe (25), and the gas preheater (2) and the waste heat boiler (8) are connected by a fourth connecting pipe (40).
10. The hydrogen production plant from synthesis gas according to any one of claims 1 to 6, characterized in that, The first converter (5) is equipped with a heat exchanger (41), which is connected to the second gas outlet pipe (20). The waste heat boiler (8) is connected to the third gas outlet pipe (42) and the water supply pipe (45), and the water supply pipe (45) is equipped with a ninth regulating valve (44).