A methanol reforming dual hydrogen supply system for stainless steel processing
By combining methanol reforming for hydrogen production and PSA purification modules into a dual hydrogen supply system, the problems of high carbon emissions and slow start-up in traditional hydrogen production processes have been solved. This system enables rapid supply of high-purity hydrogen and high-temperature heating in stainless steel processing, thereby improving energy conversion efficiency and economy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING HERACLES NOVEL TECH CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-06-09
AI Technical Summary
Traditional hydrogen production processes suffer from high carbon emissions, reliance on non-renewable resources, high energy consumption, environmental pollution, and challenges in energy efficiency and economics. Furthermore, large-scale equipment is slow to start up and cannot meet the requirements of stainless steel processing for high-purity hydrogen and high-temperature heating.
The dual hydrogen supply system, consisting of a methanol reforming hydrogen production module, a heat exchange module, a gas-liquid separation module, a PSA purification module, and a natural gas hydrogen blending module, produces hydrogen through methanol-water solution reforming, combined with PSA purification and natural gas hydrogen blending, providing a mixture of high-purity hydrogen and natural gas with adjustable hydrogen content, achieving rapid start-up and efficient energy conversion.
It enables the rapid supply of high-purity hydrogen and meets the high-temperature heating requirements in stainless steel processing, reduces energy consumption and costs, improves the utilization rate of waste heat from exhaust gas and energy conversion efficiency, and provides an environmentally friendly and economical source of hydrogen.
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Figure CN224331837U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of methanol-to-hydrogen technology, specifically to a methanol reforming dual-hydrogen supply system for stainless steel processing. Background Technology
[0002] Hydrogen, as a carrier of hydrogen energy, is widely used in various industrial sectors of the national economy. For example, hydrogen can be used as a fuel source for both fuel cells and hydrogen internal combustion engines, making it a preferred energy source for achieving low-carbon and environmentally friendly practices. Especially in recent years, the number of small and medium-sized users has increased rapidly. For instance, in stainless steel processing, both pure hydrogen and hydrogen-rich gas are required, used as a protective gas and for heating, respectively. While traditional hydrogen production processes offer low costs in the short term, their long-term cost advantage has diminished due to tightening environmental policies such as carbon neutrality, rendering them inadequate. Furthermore, they suffer from drawbacks such as high carbon emissions, reliance on non-renewable resources, high energy consumption, environmental pollution, and challenges related to energy efficiency and economic viability.
[0003] Methanol-water steam reforming hydrogen production equipment is one of the best solutions for low-cost on-site hydrogen production. It uses methanol and water as raw materials and employs low-temperature catalytic technology to produce 67-73% hydrogen on-site. After further purification, pure hydrogen is obtained and can be used as a reducing agent and protective gas in stainless steel processing, significantly improving the surface quality and mechanical properties of stainless steel. Due to the high purity of hydrogen, it reduces surface discoloration and mechanical property degradation caused by impurities. Specific applications include annealing protection, brazing protection, chemical / electrochemical processing, and welding protection during stainless steel processing. Using pure hydrogen instead of ammonia decomposition mixture as a protective gas in stainless steel processing not only improves the quality of stainless steel but also eliminates significant safety hazards, offering excellent economic and safety benefits, thus possessing great value for widespread application. On the other hand, further blending natural gas with hydrogen can improve the energy efficiency and environmental performance of natural gas. The combustion rate of natural gas after blending with hydrogen is significantly increased, the flame propagation speed is faster, approaching isochoric combustion, and the thermal efficiency is increased by approximately 10%-15%. Simultaneously, hydrogen's calorific value is approximately three times that of natural gas, which can reduce natural gas consumption by 20%-30%, lowering fuel costs. Therefore, it can be directly applied to stainless steel processing processes such as forging, heat treatment, and surface treatment, which require heating and high temperatures.
[0004] The main drawbacks of traditional fossil fuel-based hydrogen production include high carbon emissions, reliance on non-renewable resources, high energy consumption, environmental pollution, and challenges in energy efficiency and economics. While traditional hydrogen production methods offer low costs in the short term, their long-term cost advantage diminishes as environmental policies such as carbon neutrality tighten. Furthermore, traditional large-scale hydrogen production equipment suffers from slow start-up and lengthy start-up times. In addition, existing large-scale methanol steam reforming hydrogen production equipment requires indirect electric heating to ensure the reforming catalyst is in a catalytically reformable state before fuel is introduced to participate in the reforming reaction, resulting in slow start-up and lengthy start-up times. Utility Model Content
[0005] In view of this, this application provides a methanol reforming dual hydrogen supply system for stainless steel processing. The methanol reforming dual hydrogen supply system for stainless steel processing has a quick start-up time, adjustable hydrogen production, no pollution, and is energy-saving and inexpensive. It can be used simultaneously as a protective gas required in the stainless steel processing field and as fuel required for high-temperature heating.
[0006] To achieve the above objectives, this application adopts the following technical solution.
[0007] A methanol reforming dual-hydrogen supply system for stainless steel processing includes a methanol reforming hydrogen production module, a heat exchange module, a gas-liquid separation module, a PSA (Pressure Swing Adsorption) purification module, a natural gas hydrogen blending module, a methanol storage tank, a water storage tank, a methanol-water solution storage tank, a methanol feed pump, a water feed pump, a methanol-water solution feed pump, and corresponding connecting pipelines; wherein, the methanol reforming hydrogen production module includes a vaporizer, a heater, and a reformer;
[0008] The gas outlet of the gas-liquid separation module is connected to the PSA purification module and the natural gas hydrogen blending module, respectively, thereby forming a dual hydrogen supply system;
[0009] The high-purity hydrogen prepared by the PSA purification module is used as a protective gas for stainless steel processing; the natural gas hydrogen-blended gas prepared by the natural gas hydrogen-blended module is used for combustion to generate the high temperature required for stainless steel processing.
[0010] In this application, the methanol-water solution in the methanol-water solution storage tank is fed into a heat exchange module via a methanol-water solution feed pump for heat exchange. The heat-exchanged methanol-water solution then enters a methanol reforming hydrogen production module for reforming and hydrogen production. The tail gas from the methanol reforming hydrogen production module is vented. The high-temperature reformed hydrogen produced by the methanol reforming hydrogen production module enters another heat exchange module for heat exchange. The heat-exchanged reformed hydrogen then enters a gas-liquid separation module for gas-liquid separation. The liquefied water vapor obtained from the gas-liquid separation module is recycled into a water storage tank. Part of the reformed hydrogen after gas-liquid separation enters a PSA purification module for purification to produce high-purity hydrogen, and the other part enters a natural gas blending module for natural gas blending to produce a natural gas-hydrogen blend. Pressure swing adsorption (PSA) is a gas separation technology based on the selective adsorption of an adsorbent under different pressures, widely used in gas purification processes. PSA technology can be widely used in the production and purification of industrial oxygen, nitrogen, and hydrogen. In this application, the PSA purification module is used to purify the reformed hydrogen after the gas-liquid separation module, producing high-purity hydrogen after passing through the hydrogen purification module. The heat exchange module is a component that uses the high-temperature reformed hydrogen gas discharged from the reformer of the methanol reforming hydrogen production module to heat the liquid methanol-water solution. Its purpose is to utilize the waste heat of the tail gas, reduce heat loss, and improve energy conversion efficiency. The natural gas hydrogen blending module is used to blend the reformed hydrogen gas after the gas-liquid separation module with natural gas. Through the natural gas hydrogen blending module, a natural gas-hydrogen blended gas with adjustable hydrogen purity can be produced.
[0011] Optionally, in the methanol reforming hydrogen production module, the vaporizer, heater, and reformer are connected in sequence via a methanol-water solution pipeline.
[0012] In the methanol reforming hydrogen production module described in this application, a methanol catalytic reforming reaction occurs in the reformer. The methanol aqueous solution enters the vaporizer, is vaporized, then enters the heater to be heated, and finally enters the reformer to undergo a methanol-water reforming reaction to generate reformed hydrogen.
[0013] Optionally, the methanol storage tank is connected to the methanol-water solution storage tank via a methanol feed pump; the water storage tank is connected to the methanol-water solution storage tank via a water inlet pump.
[0014] In this application, the methanol in the methanol storage tank enters the methanol-water solution storage tank through a methanol feed pump, and then mixes with the water in the water storage tank after entering the methanol-water solution storage tank through a water inlet pump to form a methanol-water solution.
[0015] Optionally, the methanol-water solution storage tank is connected to the heat exchange module via a methanol-water solution feed pump, and then connected to the methanol reforming hydrogen production module via the heat exchange module; the reformed hydrogen outlet of the methanol reforming hydrogen production module is connected to the heat exchange module, and then connected to the gas-liquid separation module via the heat exchange module.
[0016] Optionally, the vaporizer is connected to the heat exchange module via a methanol-water solution pipeline, and is used to heat the methanol-water solution heated by the heat exchanger to vaporize it.
[0017] Optionally, in the methanol reforming hydrogen production module, the heater is connected to the methanol steam outlet of the vaporizer for further heating the methanol steam vaporized by the vaporizer.
[0018] Optionally, the air exhaust outlet of the methanol reforming hydrogen production module is connected to an air exhaust pipe. Optionally, the exhaust gas from the methanol reforming hydrogen production module is discharged into the air after passing through the air exhaust outlet.
[0019] Optionally, the exhaust outlet of the vaporizer is connected to the air exhaust port of the methanol reforming hydrogen production module to discharge the exhaust gas after catalytic oxidation by the vaporizer.
[0020] Optionally, the tail gas outlet (mainly CO) of the PSA purification module is connected to the vaporizer of the methanol reforming hydrogen production module to provide the vaporizer with the required energy using the high-temperature tail gas from the PSA purification module.
[0021] Optionally, the liquid outlet of the gas-liquid separation module is connected to the water storage tank for gas-liquid separation of the reformed hydrogen after heat exchange by the heat exchange module, so that the water vapor in the reformed hydrogen is liquefied, and the liquefied water vapor enters the water storage tank for recycling.
[0022] Optionally, the water storage tank is used to store water, including desalinated water.
[0023] Optionally, the vaporizer of the methanol reforming hydrogen production module is used to heat and vaporize the methanol-water solution.
[0024] Optionally, the heater of the methanol reforming hydrogen production module is used to further heat the methanol water vapor after vaporization in the vaporizer.
[0025] Optionally, the reformer in the methanol reforming hydrogen production module undergoes a methanol catalytic reforming reaction.
[0026] Optionally, the heat exchange module is used to exchange heat between the high-temperature reformed hydrogen and the methanol-water solution in the methanol reforming hydrogen production module.
[0027] Optionally, the gas-liquid separation module is used to perform gas-liquid separation on the reformed hydrogen after heat exchange.
[0028] Optionally, the PSA purification module is used to purify the reformed hydrogen after gas-liquid separation to produce high-purity hydrogen, the protective gas required for stainless steel processing.
[0029] Optionally, the natural gas hydrogen blending module is used to blend the reformed hydrogen at the reformer outlet of the methanol reforming hydrogen production module with natural gas to produce a natural gas-hydrogen blended gas, which is then burned to produce the high temperature required for stainless steel processing.
[0030] In the dual hydrogen supply system of this application, the gas outlet of the gas-liquid separation module is connected to both the PSA purification module and the natural gas hydrogen blending module. A portion of the reformed hydrogen is purified by the PSA to produce high-purity hydrogen, while another portion is blended by the natural gas to produce a natural gas-hydrogen blend with adjustable hydrogen content, thus forming a dual hydrogen supply system. The heat exchange module exchanges heat between the high-temperature reformed hydrogen produced by the methanol reforming hydrogen production module and a methanol-water solution. The exhaust gas from the PSA purification module is fed into the methanol reforming hydrogen production module for recovery and reuse, and the liquefied water vapor from the liquid outlet of the gas-liquid separation module is fed into a water storage tank for recovery and reuse. Through the heat exchange module and multiple recovery and reuse processes, the waste heat utilization rate and energy conversion efficiency of the exhaust gas are effectively improved.
[0031] Optionally, the methanol reforming hydrogen production module, heat exchange module (or tail gas heat exchange module), gas-liquid separation module, PSA purification module, natural gas hydrogen blending module, methanol storage tank, water storage tank, methanol-water solution storage tank, methanol feed pump, water inlet pump, and methanol-water solution feed pump are sealed together by corresponding pipelines and high-temperature resistant special sealing rings.
[0032] Optionally, the methanol reforming hydrogen production module's reformer undergoes a methanol catalytic reforming reaction, and the temperature of the reformed hydrogen gas at the reformer outlet is 150–200°C, and the pressure is 1–2 MPa (e.g., about 1.3 MPa).
[0033] In this application, the above technical solutions can be freely combined to form new technical solutions, provided that they do not conflict with each other.
[0034] The technical solution of this application has the following beneficial technical effects compared with the prior art:
[0035] (1) In this application, the reformed hydrogen produced by the methanol reforming hydrogen production module can be further purified into high-purity hydrogen by the PSA purification module, and further purified into natural gas hydrogen-blended mixture with adjustable hydrogen content by the natural gas hydrogen blending module, thereby forming a dual hydrogen supply system.
[0036] (2) This application uses a heat exchange module to exchange heat between the high-temperature reformed hydrogen produced by the methanol reforming hydrogen production module and the methanol aqueous solution, and to pass the tail gas from the outlet of the PSA purification module into the methanol reforming hydrogen production module for recovery and secondary utilization, and to pass the liquefied water vapor from the outlet of the gas-liquid separation module into a water storage tank for recovery and secondary utilization; through the heat exchange module and multiple recovery and secondary utilization, the tail gas waste heat utilization rate and energy conversion efficiency are effectively improved.
[0037] (3) The methanol reforming dual hydrogen supply system for stainless steel processing provided in this application has the advantages of convenient raw material source, simple equipment, quick start-up, adjustable hydrogen production and hydrogen purity, no pollution and energy saving and low price. It can be used simultaneously for protective gas and fuel required for high temperature heating in the stainless steel processing field. Attached Figure Description
[0038] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0039] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0040] Figure 1 This is a schematic diagram of the structure and process flow of a methanol reforming dual hydrogen supply system for stainless steel processing according to this application. Detailed Implementation
[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0042] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this application can be purchased from the market or prepared by existing methods.
[0043] Example 1
[0044] A methanol reforming dual hydrogen supply system for stainless steel processing, such as Figure 1 As shown, the system includes a methanol reforming hydrogen production module, a heat exchange module, a gas-liquid separation module, a PSA (Pressure Swing Adsorption) purification module, a natural gas hydrogen blending module, a methanol storage tank, a water storage tank, a methanol-water solution storage tank, a methanol feed pump, a water feed pump, a methanol-water solution feed pump, and corresponding connecting pipelines. The methanol reforming hydrogen production module includes a vaporizer, a heater, and a reformer, which are sequentially connected via a methanol-water solution pipeline. Detailed description follows:
[0045] The methanol storage tank is connected to the methanol-water solution storage tank via a methanol feed pump; the water storage tank is connected to the methanol-water solution storage tank via a water inlet pump. In the methanol-water solution storage tank, methanol and water are mixed to form a methanol-water solution, wherein the water is demineralized water.
[0046] The methanol-water solution storage tank is connected to a heat exchange module via a methanol-water solution feed pump, and then connected to a vaporizer in the methanol reforming hydrogen production module via the heat exchange module. The vaporizer heats the methanol-water solution after it has been heated by the heat exchanger, causing it to vaporize. The vaporized methanol-water solution then enters a heater for further heating, and finally enters the reformer. In the reformer, a methanol-water reforming reaction occurs to produce reformed hydrogen. The temperature of the reformed hydrogen at the reformer outlet is 150–200°C, and the pressure is approximately 1.3 MPa.
[0047] The reformed hydrogen outlet of the methanol reforming hydrogen production module is connected to a heat exchange module. The reformed hydrogen exchanges heat with a methanol-water solution in the heat exchanger, raising the temperature of the methanol-water solution. The liquid outlet of the heat exchange module is connected to the methanol reforming hydrogen production module. The heated methanol-water solution sequentially enters the vaporizer, heater, and reformer of the methanol reforming hydrogen production module, where a methanol reforming reaction occurs to produce reformed hydrogen.
[0048] The gas outlet of the heat exchange module is connected to the gas-liquid separation module, and the gas outlet of the gas-liquid separation module is connected to both the PSA purification module and the natural gas hydrogen blending module, forming a dual hydrogen supply system. Specifically, the reformed hydrogen, cooled after heat exchange in the heat exchange module, enters the gas-liquid separation module for gas-liquid separation. The reformed hydrogen obtained from the gas outlet of the gas-liquid separation module is further purified by the PSA purification module to obtain high-purity hydrogen, which can be used by users in the stainless steel processing technology field who use pure hydrogen as a protective gas. The reformed hydrogen obtained from the gas outlet of the gas-liquid separation module enters the natural gas hydrogen blending module, where it is blended with natural gas to obtain a natural gas-hydrogen mixture (i.e., a natural gas-hydrogen mixture), which can be used by users in the stainless steel processing technology field who use a natural gas-hydrogen mixture for combustion heating. Furthermore, the tail gas outlet of the PSA purification module (the tail gas is mainly CO) is connected to the vaporizer of the methanol reforming hydrogen production module, using the high-temperature tail gas from the PSA purification module to provide the necessary energy for the vaporizer. The exhaust outlet of the vaporizer is connected to the air exhaust port of the methanol reforming hydrogen production module to discharge the exhaust gas after catalytic oxidation by the vaporizer.
[0049] The liquid outlet of the gas-liquid separation module is connected to the water storage tank to separate the reformed hydrogen after heat exchange by the heat exchange module, so that the water vapor in the reformed hydrogen is liquefied and the liquefied water vapor enters the water storage tank for recycling.
[0050] In addition, the methanol reforming hydrogen production module, heat exchange module, gas-liquid separation module, PSA purification module, natural gas hydrogen blending module, methanol storage tank, water storage tank, methanol-water solution storage tank, methanol feed pump, water feed pump, and methanol-water solution feed pump are sealed together by corresponding pipelines and high-temperature resistant special sealing rings.
[0051] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein. In this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0052] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0053] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
Claims
1. A methanol reforming dual-hydrogen supply system for stainless steel processing, characterized in that, The system includes a methanol reforming hydrogen production module, a heat exchange module, a gas-liquid separation module, a PSA purification module, a natural gas hydrogen blending module, a methanol storage tank, a water storage tank, a methanol-water solution storage tank, a methanol feed pump, a water feed pump, a methanol-water solution feed pump, and corresponding connecting pipelines; wherein, the PSA purification module is a pressure swing adsorption purification module; the methanol reforming hydrogen production module includes a vaporizer, a heater, and a reformer; The gas outlet of the gas-liquid separation module is connected to the PSA purification module and the natural gas hydrogen blending module, respectively, thereby forming a dual hydrogen supply system; The high-purity hydrogen prepared by the PSA purification module is used as a protective gas for stainless steel processing; the natural gas hydrogen-blended gas prepared by the natural gas hydrogen-blended module is used for combustion to generate the high temperature required for stainless steel processing.
2. The methanol reforming dual hydrogen supply system for stainless steel processing as described in claim 1, characterized in that, In the methanol reforming hydrogen production module, the vaporizer, heater and reformer are connected in sequence via a methanol-water solution pipeline; The methanol storage tank is connected to the methanol-water solution storage tank via a methanol feed pump, and the water storage tank is connected to the methanol-water solution storage tank via a water inlet pump. The methanol-water solution storage tank is connected to the heat exchange module via a methanol-water solution feed pump, and then connected to the methanol reforming hydrogen production module via the heat exchange module; the reformed hydrogen outlet of the methanol reforming hydrogen production module is connected to the heat exchange module, and then connected to the gas-liquid separation module via the heat exchange module.
3. The methanol reforming dual hydrogen supply system for stainless steel processing as described in claim 1, characterized in that, The vaporizer is connected to the heat exchange module via a methanol-water solution pipeline; In the methanol reforming hydrogen production module, the heater is connected to the methanol steam outlet of the vaporizer; The air exhaust outlet of the methanol reforming hydrogen production module is connected to the air exhaust pipe. The exhaust outlet of the vaporizer is connected to the air exhaust port of the methanol reforming hydrogen production module.
4. The methanol reforming dual hydrogen supply system for stainless steel processing as described in claim 3, characterized in that, The exhaust gas outlet of the PSA purification module is connected to the vaporizer of the methanol reforming hydrogen production module.
5. The methanol reforming dual hydrogen supply system for stainless steel processing as described in claim 1, characterized in that, The liquid outlet of the gas-liquid separation module is connected to the water storage tank.
6. The methanol reforming dual hydrogen supply system for stainless steel processing as described in any one of claims 1-5, characterized in that, The water storage tank is used to store water, including desalinated water.
7. The methanol reforming dual hydrogen supply system for stainless steel processing as described in any one of claims 1-5, characterized in that, The vaporizer in the methanol reforming hydrogen production module is used to heat and vaporize an aqueous methanol solution. The heater in the methanol reforming hydrogen production module is used to further heat the methanol steam vapor produced by the vaporizer. The methanol reforming hydrogen production module involves a methanol catalytic reforming reaction in the reformer. The heat exchange module is used to exchange heat between the high-temperature reformed hydrogen and the methanol-water solution in the methanol reforming hydrogen production module. The gas-liquid separation module is used to separate the reformed hydrogen after heat exchange into gas and liquid components.
8. The methanol reforming dual hydrogen supply system for stainless steel processing as described in any one of claims 1-5, characterized in that, The PSA purification module is used to purify the reformed hydrogen after gas-liquid separation to produce high-purity hydrogen, the protective gas required for stainless steel processing. The natural gas hydrogen blending module is used to blend the reformed hydrogen from the reformer outlet of the methanol reforming hydrogen production module with natural gas to produce a natural gas-hydrogen blended gas, which is then burned to produce the high temperature required for stainless steel processing.
9. The methanol reforming dual hydrogen supply system for stainless steel processing as described in any one of claims 1-5, characterized in that, The methanol reforming hydrogen production module, heat exchange module, gas-liquid separation module, PSA purification module, natural gas hydrogen blending module, methanol storage tank, water storage tank, methanol-water solution storage tank, methanol feed pump, water feed pump, and methanol-water solution feed pump are connected by corresponding pipelines and high-temperature resistant sealing rings.
10. The methanol reforming dual-hydrogen supply system for stainless steel processing as described in any one of claims 1-5, characterized in that, The methanol reforming hydrogen production module has a methanol catalytic reforming reaction in its reformer. The reformed hydrogen gas at the reformer outlet has a temperature of 150-200°C and a pressure of 1-2 MPa.