System for complementing outsourcing hydrogen, recycling hydrogen and on-site hydrogen production
By using a system that combines purchased hydrogen with recycled hydrogen, the problems of insufficient hydrogen supply and resource waste have been solved, achieving stable and efficient utilization of hydrogen supply, reducing energy consumption, and ensuring the stability of the hydrogen refueling process.
Patent Information
- Application Number
- CN202422766774.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-11-13
AI Technical Summary
In the existing process of producing sorbitol by hydrogenation of glucose, insufficient hydrogen supply leads to unstable reaction, excessive load on hydrogen compressor, high energy consumption, and failure to effectively utilize hydrogen resources in the reactor, resulting in waste.
The system employs a complementary approach of purchasing hydrogen, recycling hydrogen, and producing hydrogen on-site. Through components such as external hydrogen supply devices, hydrogen production devices, hydrogen storage tanks, and gas-liquid separators, it achieves a stable supply and recycling of hydrogen. This includes high-pressure and low-pressure hydrogen storage tanks, hydrogen compressors, and an automatic control system to ensure a stable supply and efficient utilization of hydrogen in the reactor.
It improves the stability and utilization rate of hydrogen supply, reduces the load on hydrogen compressors, lowers energy consumption, ensures the stability of the hydrogen refueling process, and reduces resource waste.
Smart Images
Figure CN223555998U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of solid sorbitol production technology, and in particular to a system that complements purchased hydrogen, recycled hydrogen, and on-site hydrogen production. Background Technology
[0002] In the existing production process of sorbitol from glucose hydrogenation, hydrogen is the main raw material for hydrogenation. High-purity hydrogen is obtained through pressure swing adsorption, generally with a purity of 99.999%, which solves the problem of hydrogen purity. However, the capacity of the hydrogen production station is fixed. When the hydrogenation workshop increases its capacity, the hydrogen supply cannot meet the hydrogenation needs. Therefore, the system's hydrogen consumption is made up by purchasing hydrogen from external sources and reusing secondary hydrogen.
[0003] When the output of the reactor is increased or more reactors are added, the hydrogen production load increases, the hydrogen content becomes unstable, and impurities are generated, which is detrimental to the hydrogenation reaction and increases the load on the hydrogen compressor. The entire system operates at high frequency, resulting in high energy consumption. The hydrogen production system is only sufficient for the existing equipment to add hydrogen. After hydrogenation, the hydrogen in the reactor is discharged outdoors and is not reused, resulting in resource waste.
[0004] To address this issue, this utility model proposes a system that complements the external purchase of hydrogen, hydrogen recycling, and on-site hydrogen production. Summary of the Invention
[0005] The purpose of this invention is to at least solve one of the aforementioned technical defects.
[0006] Therefore, one objective of this invention is to propose a system that complements the external purchase of hydrogen, hydrogen recycling, and on-site hydrogen production, in order to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.
[0007] To achieve the above objectives, one embodiment of the present invention provides a system that complements purchased hydrogen, recycled hydrogen, and on-site hydrogen production, including an external hydrogen supply device, a hydrogen production device, a high-pressure hydrogen storage tank for storing hydrogen, a low-pressure hydrogen storage tank for storing hydrogen, a reaction vessel, and a gas-liquid separator. The output pipe of the external hydrogen supply device is connected to a hydrogen pressure relief skid, and the hydrogen pressure relief skid is connected to the gas-liquid separator through a low-pressure hydrogen unloading pipe.
[0008] The high-pressure hydrogen storage tank is connected to the reactor via a high-pressure hydrogen pipeline. The high-pressure hydrogen storage tank is also connected to a hydrogen pressure relief skid via a high-pressure hydrogen unloading pipeline. A high-pressure hydrogen switch valve and a high-pressure hydrogen regulating valve are installed sequentially on the high-pressure hydrogen unloading pipeline.
[0009] The low-pressure hydrogen storage tank is connected with the gas-liquid separator through a hydrogen production low-pressure hydrogen pipeline, the low-pressure hydrogen storage tank is connected with a hydrogen compressor through a first pipeline, the hydrogen compressor is connected with a hydrogen production high-pressure hydrogen storage tank through a second pipeline, and the hydrogen production high-pressure hydrogen storage tank is connected with the high-pressure hydrogen pipeline through a hydrogen production high-pressure hydrogen pipeline.
[0010] The low-pressure hydrogen discharge pipeline is sequentially provided with a low-pressure hydrogen valve and a low-pressure hydrogen regulating valve.
[0011] The low-pressure hydrogen discharge pipeline is provided with a pressure sensor on the side close to the reaction kettle recovery hydrogen pipeline, and the low-pressure hydrogen valve, the low-pressure hydrogen regulating valve and the pressure sensor are connected with each other in parallel.
[0012] The low-pressure hydrogen storage tank body is provided with a pressure remote transmission sensor and a safety valve.
[0013] The hydrogen production low-pressure hydrogen pipeline is sequentially provided with a hydrogen production hydrogen on-off valve and a hydrogen production hydrogen regulating valve.
[0014] The reaction kettle is connected with the low-pressure hydrogen discharge pipeline through a reaction kettle recovery hydrogen pipeline, and the reaction kettle recovery hydrogen pipeline is sequentially provided with a reaction kettle hydrogen recovery regulating valve and a reaction kettle hydrogen recovery on-off valve.
[0015] The gas-liquid separator is provided with a remote liquid level meter, a drain valve is arranged at a drain pipe of the gas-liquid separator, and a perforated plate is arranged at the drain pipe.
[0016] The gas-liquid separator is connected with the hydrogen pressure reduction pry through the low-pressure hydrogen discharge pipeline, and the gas-liquid separator is connected with the high-pressure hydrogen discharge pipeline through the low-pressure hydrogen discharge pipeline.
[0017] The high-pressure hydrogen pipeline is provided with a hydrogen production hydrogen on-off SIS on the side close to the reaction kettle, and the high-pressure hydrogen pipeline is provided with a hydrogen production hydrogen on-off SIS on the side close to the reaction kettle.
[0018] Compared with the prior art, the utility model has the advantages and beneficial effects that:
[0019] 1、Increase hydrogen supply source, increase hydrogen production device, buy high pressure hydrogen tank truck through pressure reducing pry after decompression, through PLC automatic regulating valve respectively into hydrogen production high pressure hydrogen storage tank and high pressure hydrogen storage tank, then confluence supply reaction kettle hydrogen use, buy high pressure hydrogen tank truck through pressure reducing pry after decompression, enter into gas-liquid separator, hydrogen and water are separated, then hydrogen is discharged into low pressure hydrogen storage tank, hydrogen in hydrogen production device is also discharged into low pressure hydrogen storage tank, then again through hydrogen compressor pressurization hydrogen, pressurized hydrogen is discharged into low pressure hydrogen storage tank, finally hydrogen is discharged into reaction kettle, hydrogen storage tank and, enter hydrogen production system, supply reaction kettle hydrogen use, add hydrogen system can reduce hydrogen compressor load, reduce hydrogen production pressure, increase hydrogen station high pressure hydrogen storage tank storage capacity, can guarantee that hydrogen pressure is stable in hydrogenation process, guarantee hydrogenation stability;
[0020] 2、Increase reaction kettle recovery hydrogen pipeline, first recover hydrogen in reaction kettle to low pressure before reaction kettle discharge, hydrogen enters gas-liquid separator, hydrogen and condensate are separated, hydrogen is discharged through the bottom of gas-liquid separator, gas is discharged from the top and enters low pressure hydrogen storage tank, simultaneously, hydrogen produced by hydrogen production device also enters low pressure hydrogen storage tank after hydrogen station hydrogen switch valve, hydrogen station hydrogen regulating valve, hydrogen is discharged from low pressure hydrogen storage tank to hydrogen compressor for pressurization, pressurized hydrogen enters hydrogen production high pressure hydrogen storage tank, finally hydrogen is discharged into reaction kettle, let reaction kettle utilize, through recovery reaction kettle hydrogen after hydrogenation, reduce energy waste, secondary use hydrogen, increase utilization, add hydrogen gas system can reduce hydrogen compressor load, reduce hydrogen production pressure.
[0021] The additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS
[0022] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description of embodiments, taken in conjunction with the accompanying drawings.
[0023] Figure 1 The system according to the present application is shown in the accompanying drawings.
[0024] In the diagram: 1. External hydrogen supply unit; 101. Hydrogen pressure reducing skid; 2. Hydrogen production unit; 3. High-pressure hydrogen storage tank; 301. High-pressure hydrogen regulating valve; 302. High-pressure hydrogen pipeline; 303. High-pressure hydrogen unloading pipeline; 304. High-pressure hydrogen switch valve; 4. Low-pressure hydrogen storage tank; 401. Low-pressure hydrogen unloading pipeline; 402. Low-pressure hydrogen production pipeline; 403. Hydrogen production regulating valve; 404. First pipeline; 405. Hydrogen compressor; 406. Second pipeline; 40 7. High-pressure hydrogen storage tank for hydrogen production; 408. High-pressure hydrogen pipeline for hydrogen production; 409. Low-pressure hydrogen valve; 410. Low-pressure hydrogen regulating valve; 411. Hydrogen production switch valve; 5. Reactor; 501. Hydrogen recovery pipeline for reactor; 502. Hydrogen recovery regulating valve for reactor; 503. Hydrogen recovery switch valve for reactor; 6. Gas-liquid separator; 601. Remote level gauge; 602. Drain valve; 603. Orifice plate; 7. Hydrogen production switch SIS; 8. Pressure sensor. Detailed Implementation
[0025] like Figure 1 As shown, a system that complements purchased hydrogen, recycled hydrogen, and on-site hydrogen production includes an external hydrogen supply device 1, a hydrogen production device 2, a high-pressure hydrogen storage tank 3 for storing hydrogen, a low-pressure hydrogen storage tank 4 for storing hydrogen, a reaction vessel 5, and a gas-liquid separator 6. The output pipe of the external hydrogen supply device 1 is connected to a hydrogen pressure reducing skid 101, and the hydrogen pressure reducing skid 101 is connected to the gas-liquid separator 6 through a low-pressure hydrogen unloading pipe 401.
[0026] The high-pressure hydrogen storage tank 3 is connected to the reactor 5 via the high-pressure hydrogen pipeline 302. The high-pressure hydrogen storage tank 3 is connected to the hydrogen pressure reducing skid 101 via the high-pressure hydrogen unloading pipeline 303. The high-pressure hydrogen unloading pipeline 303 is equipped with a high-pressure hydrogen switch valve 304 and a high-pressure hydrogen regulating valve 301 in sequence.
[0027] The low-pressure hydrogen storage tank 4 is connected with the gas-liquid separator 6 through the hydrogen production low-pressure hydrogen pipeline 402, and the low-pressure hydrogen storage tank 4 is connected with the hydrogen compressor 405 through the first pipeline 404, and the hydrogen compressor 405 is connected with the hydrogen production high-pressure hydrogen storage tank 407 through the second pipeline 406, and the hydrogen production high-pressure hydrogen storage tank 407 is connected with the high-pressure hydrogen pipeline 302 through the hydrogen production high-pressure hydrogen pipeline 408, and the hydrogen production device 2 and the hydrogen recovery can be used to keep the hydrogen production high-pressure hydrogen storage tank 407 in a high-pressure state in front of the reaction kettle 5, and the pressure of the hydrogen production high-pressure hydrogen storage tank 407 is monitored in real time through the pressure sensor, when the reaction of the reaction kettle 5 is completed and before the discharge, when the pressure of the hydrogen production high-pressure hydrogen storage tank 407 is lower than 4.5 MPa, the hydrogen in the reaction kettle 5 is recovered to the low-pressure hydrogen storage tank 4 through the reaction kettle hydrogen recovery pipeline 501, and then the hydrogen is transported to the hydrogen production high-pressure hydrogen storage tank 407 after being pressurized by the hydrogen compressor 405, and the pressurized hydrogen enters the reaction kettle 5 for use, when the hydrogen recovery is completed and the pressure of the hydrogen system is not enough for use, the high-pressure tank truck is used to enter the high-pressure hydrogen storage tank 3 through the high-pressure hydrogen discharge pipeline 303, and the hydrogenation use is satisfied.
[0028] The low-pressure hydrogen valve 409 and the low-pressure hydrogen regulating valve 410 are installed on the low-pressure hydrogen discharge pipeline 401 in sequence.
[0029] The pressure sensor 8 is installed on one side of the low-pressure hydrogen discharge pipeline 401 close to the reaction kettle hydrogen recovery pipeline 501, and the low-pressure hydrogen valve 409, the low-pressure hydrogen regulating valve 410 and the pressure sensor 8 are connected with each other in parallel, the pressure sensor used in the application is a GEMS Jietai 3160 series hydrogen pressure sensor, and the existing sensor is not changed in function.
[0030] The pressure remote sensor and the safety valve are installed on the low-pressure hydrogen storage tank 4 body, the pressure remote sensor used in the application is a PT500-540 type sensor produced by Puli Electronics.
[0031] The hydrogen production hydrogen switch valve 411 and the hydrogen production hydrogen regulating valve 403 are installed on the hydrogen production low-pressure hydrogen pipeline 402 in sequence.
[0032] The reaction kettle 5 is connected with the low-pressure hydrogen discharge pipeline 401 through the reaction kettle hydrogen recovery pipeline 501, and the reaction kettle hydrogen recovery regulating valve 502 and the reaction kettle hydrogen recovery switch valve 503 are installed on the reaction kettle hydrogen recovery pipeline 501 in sequence.
[0033] The remote liquid level meter 601 is installed on the gas-liquid separator 6, the drain valve 602 is installed at the drain pipe of the gas-liquid separator 6, and the orifice plate 603 is installed at the drain pipe.
[0034] The gas-liquid separator 6 is connected with the hydrogen pressure relief pry 101 through the low-pressure hydrogen discharge pipeline 401, and is connected with the high-pressure hydrogen discharge pipeline 303 through the low-pressure hydrogen discharge pipeline 401.
[0035] The high-pressure hydrogen pipeline 302 is provided with a hydrogen production hydrogen switch SIS 7 near one side of the reaction kettle 5, and the hydrogen production hydrogen switch SIS refers to a hydrogen switch system used in a hydrogen production station.
[0036] In the present application, the PLC system and the SIS system are controlled, and the main target of the SIS system is to realize real-time monitoring and control of plant-level management and control integration by integrating a communication network with each unit control system, auxiliary system and public system through real-time monitoring of unit performance and the hydrogen switch SIS, and performing automatic control, and the PLC system controls various valves in the present application.
[0037] The external hydrogen supply device 1 adopts a purchased hydrogen high-pressure tank truck, the full-tank truck pressure is 19 MPa, the high-pressure tank truck is unloaded, the hydrogen is reduced to 6.5 MPa through the hydrogen pressure relief pry 101, then the hydrogen is transported through the high-pressure hydrogen discharge pipeline 303, and enters the high-pressure hydrogen storage tank 3 through the high-pressure hydrogen regulating valve 301, the high-pressure hydrogen switch valve 304, the check valve and the ball valve in turn, the high-pressure hydrogen storage tank 3 is provided with a remote pressure sensor and a safety valve, the remote pressure sensor is connected with the high-pressure hydrogen switch valve 304 and the high-pressure hydrogen switch valve 304 in a chain, when the pressure reaches 6.5 MPa, the high-pressure hydrogen switch valve 304 and the high-pressure hydrogen switch valve 304 are automatically closed, when the pressure of the high-pressure hydrogen storage tank 3 exceeds the bearing pressure, the safety valve is automatically jumped, the hydrogen is added to the reaction kettle 5 through the high-pressure hydrogen pipeline 302, when the pressure of the reaction kettle 5 is too high, the hydrogen production hydrogen switch SIS 7 connected with the reaction kettle 5 is automatically closed, the hydrogen supply is urgently cut off, and the system safety is ensured.
[0038] The high-pressure tank truck is unloaded, the full tank truck pressure is 19 MPa, first through the high-pressure hydrogen discharge pipeline 303 to pressure 6.5 MPa, then close the high-pressure connection high-pressure hydrogen discharge pipeline 303 on the manual ball valve, high-pressure hydrogen switch valve 304 and high-pressure hydrogen switch valve 304, then open the low-pressure hydrogen discharge pipeline 401 on the manual ball valve, low-pressure hydrogen valve 409, low-pressure hydrogen regulating valve 410, low-pressure hydrogen valve 409 and low-pressure hydrogen regulating valve 410 are interlocked with pressure sensor 8, always maintain the pressure at 1.6 MPa, then enter the gas-liquid separator 6, from the tank top hydrogen production low-pressure hydrogen pipeline 402 discharge into the low-pressure hydrogen storage tank 4, at the same time, the hydrogen produced by the hydrogen production device 2 also enters the low-pressure hydrogen storage tank 4 through the hydrogen production hydrogen switch valve 411, low-pressure hydrogen regulating valve 410 (the low-pressure hydrogen storage tank 4 body is provided with a pressure remote sensor and a safety valve), then the hydrogen enters the hydrogen compressor 405 for pressurization, the hydrogen enters the hydrogen production high-pressure hydrogen storage tank 407 through the ball valve and check valve after the hydrogen compressor 405, and the hydrogen goes to the reaction kettle 5 for hydrogenation reaction after passing through the hydrogen production hydrogen switch SIS 7.
[0039] The pressure in the reaction kettle 5 after the hydrogen reaction is completed is 4.0-4.5 MPa, the hydrogen in the reaction kettle 5 enters the gas-liquid separator 6 through the reaction kettle hydrogen recovery pipeline 501, reaction kettle hydrogen recovery regulating valve 502 and reaction kettle hydrogen recovery switch valve 503, and carries condensed water during the discharge process, the gas-liquid separator 6 is provided with a remote liquid level meter 601, when the liquid level reaches a high level, the drain switch valve 10 connected to the gas-liquid separator 6 is automatically opened, the condensed water is automatically discharged, a perforated plate 603 is installed on the drain pipeline to throttle the discharge of the condensed water to prevent hydrogen leakage due to too fast drainage, when the liquid level reaches a low level, the drain switch valve 10 is automatically closed, the reaction kettle hydrogen recovery regulating valve 502, reaction kettle hydrogen recovery switch valve 503 and reaction kettle pressure sensor are interlocked, when the pressure in the reaction kettle 5 reaches 1.6 MPa, the reaction kettle hydrogen recovery regulating valve 502 and reaction kettle hydrogen recovery switch valve 25 are closed, the hydrogen is discharged from the gas-liquid separator 6, enters the low-pressure hydrogen storage tank 4 through the hydrogen production low-pressure hydrogen pipeline 402, at the same time, the hydrogen produced by the hydrogen production device 2 also enters the low-pressure hydrogen storage tank 4 through the hydrogen production hydrogen switch valve 411 and low-pressure hydrogen regulating valve 410 (the low-pressure hydrogen storage tank 4 body is provided with a pressure remote sensor and a safety valve), then the hydrogen enters the hydrogen compressor 405 for pressurization, the hydrogen enters the hydrogen production high-pressure hydrogen storage tank 407 through the ball valve and check valve after the hydrogen compressor 405, and the hydrogen goes to the reaction kettle 5 for hydrogenation reaction after passing through the hydrogen production hydrogen switch SIS 7.
Claims
1. A system for complementing purchased hydrogen, recycled hydrogen and on-site hydrogen production, characterized by: Including external hydrogen supply device (1), hydrogen production device (2), hydrogen storage high pressure hydrogen storage tank (3), hydrogen storage low pressure hydrogen storage tank (4), reaction kettle (5) and gas-liquid separator (6), the output pipeline of the external hydrogen supply device (1) is connected with hydrogen pressure reducing crowbar (101), the hydrogen pressure reducing crowbar (101) is connected with gas-liquid separator (6) through low pressure hydrogen discharge pipeline (401); The high pressure hydrogen storage tank (3) is connected with the reaction kettle (5) through the high pressure hydrogen pipeline (302), and the high pressure hydrogen storage tank (3) is connected with the hydrogen pressure reducing crowbar (101) through the high pressure hydrogen discharge pipeline (303), and the high pressure hydrogen discharge pipeline (303) is sequentially provided with a high pressure hydrogen switch valve (304) and a high pressure hydrogen regulating valve (301).
2. The system of claim 1, wherein the system is characterized by: The low pressure hydrogen storage tank (4) is connected with the gas-liquid separator (6) through the hydrogen production low pressure hydrogen pipeline (402), and the low pressure hydrogen storage tank (4) is connected with a hydrogen compressor (405) through a first pipeline (404), the hydrogen compressor (405) is connected with a hydrogen production high pressure hydrogen storage tank (407) through a second pipeline (406), and the hydrogen production high pressure hydrogen storage tank (407) is connected with the high pressure hydrogen pipeline (302) through a hydrogen production high pressure hydrogen pipeline (408).
3. The system of claim 1, wherein the system is characterized by: The low pressure hydrogen discharge pipeline (401) is sequentially provided with a low pressure hydrogen valve (409) and a low pressure hydrogen regulating valve (410).
4. The system of claim 3, wherein the system is characterized by: The low pressure hydrogen discharge pipeline (401) is provided with a pressure sensor (8) on the side close to the reaction kettle hydrogen recovery pipeline (501), and the low pressure hydrogen valve (409), the low pressure hydrogen regulating valve (410) and the pressure sensor (8) are connected with each other in parallel.
5. The system of claim 1, wherein: The low pressure hydrogen storage tank (4) body is provided with a pressure remote sensor and a safety valve.
6. The system of claim 2, wherein: The hydrogen production low pressure hydrogen pipeline (402) is sequentially provided with a hydrogen production hydrogen switch valve (411) and a hydrogen production hydrogen regulating valve (403).
7. The system of claim 1, wherein: The reaction kettle (5) is connected with the low pressure hydrogen discharge pipeline (401) through a reaction kettle hydrogen recovery pipeline (501), and the reaction kettle hydrogen recovery pipeline (501) is sequentially provided with a reaction kettle hydrogen recovery regulating valve (502) and a reaction kettle hydrogen recovery switch valve (503).
8. The system of claim 1, wherein: The gas-liquid separator (6) is provided with a remote liquid level meter (601), a drain valve (602) is installed at the drain pipe of the gas-liquid separator (6), and a perforated plate (603) is installed at the drain pipe.
9. The system of claim 8, wherein: The gas-liquid separator (6) is connected with the hydrogen pressure reducing crowbar (101) through the low pressure hydrogen discharge pipeline (401), and the gas-liquid separator (6) is connected with the high pressure hydrogen discharge pipeline (303) through the low pressure hydrogen discharge pipeline (401).
10. The system of claim 1, wherein: The high pressure hydrogen pipeline (302) is provided with a hydrogen production hydrogen switch SIS7 on the side close to the reaction kettle (5).