Process method for preparing green hydrogen by coupling biomass flameless pyrolysis gasification with steam reforming

By combining flameless biomass pyrolysis gasification with a three-stage coupling technology of high-frequency photonic quantum energy field and steam reforming, the problems of high-temperature energy consumption and catalyst deactivation in traditional biomass pyrolysis hydrogen production have been solved, realizing low-temperature and efficient production of green hydrogen, which is suitable for the resource utilization of various organic solid wastes.

CN121823478APending Publication Date: 2026-04-10秦伟志 +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-22
Publication Date
2026-04-10
Patent Text Reader

Abstract

The invention discloses a process method for preparing green hydrogen by coupling biomass flameless pyrolysis gasification with steam reforming, and relates to the technical field of hydrogen energy preparation and organic solid waste recycling, and the process method comprises the following steps: in a high-frequency electromagnetic heating austenite alloy rotary kiln, carbon-containing organic matters are subjected to primary cracking by using a light quantum energy field excited by an alloy; combustible gas and solid carbon residues are mixed; the primary product is introduced into a light quantum reforming reactor, high-temperature superheated steam is introduced into the light quantum reforming reactor, in the reforming reactor, the high-temperature steam is dissociated into active [H] atoms and [OH] free radicals under the action of a light quantum field, the active [H] atoms and the [OH] free radicals are subjected to an efficient roaming chemical reaction with primary combustible gas and solid carbon, and hydrocarbon and carbon are preferentially converted into H2 and CO; finally, the reaction product is subjected to pressure swing adsorption or molecular sieve separation to obtain high-purity hydrogen, energy field precise excitation and chemical reaction cooperation are achieved, and the yield and selectivity of hydrogen are greatly improved.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrogen energy preparation and organic solid waste resource utilization, in particular to a process method for preparing green hydrogen by coupling biomass flameless pyrolysis and gasification with steam reforming. BACKGROUND

[0002] Hydrogen, as a clean and efficient energy carrier, has attracted much attention in the field of hydrogen production. Currently, the mainstream methods for hydrogen production include natural gas reforming, water electrolysis, and coal gasification. However, these methods either rely on fossil fuels and are accompanied by large amounts of CO2 emissions, or have high energy consumption and costs. Using carbon-containing organic matter (such as biomass and waste plastic) to produce hydrogen can not only realize waste resource utilization, but also produce "green hydrogen" or "blue hydrogen", which has significant environmental and economic benefits.

[0003] Existing biomass pyrolysis / gasification hydrogen production technology requires high temperature and catalysts to promote water-gas shift reactions to increase hydrogen production, but high temperature leads to high energy consumption, and catalysts are easily deactivated due to carbon deposition and sulfur poisoning, increasing the complexity of operation and cost. In the prior art, microwave-assisted pyrolysis can also be used, but this method can improve heating efficiency, but the ability to control product selectivity is limited, and hydrogen production rate still needs to be improved: Therefore, it is urgent to develop a technology that can crack carbon-containing organic matter at low temperature, efficiently and selectively, and convert it into hydrogen. SUMMARY

[0004] The purpose of the present application is to provide a method and system for cracking carbon-containing organic matter to produce hydrogen with high hydrogen production rate and selectivity, which can overcome the defects of the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution of the present application is as follows: In the first aspect, the present application provides a process method for preparing green hydrogen by coupling biomass flameless pyrolysis and gasification with steam reforming, comprising the following steps: a) Primary light quantum flameless pyrolysis and gasification: an oxygen-free atmosphere is formed inside the primary reaction device by inert gas purging or sealed isolation to avoid oxidation of biomass; the pretreated biomass raw material is continuously or intermittently fed into the primary reaction device, which is at least partially composed of a first austenitic alloy material; a first high-frequency electromagnetic generator is started, and the first austenitic alloy material is inductively heated by a first high-frequency electromagnetic induction coil surrounding the outside of the primary reaction device to excite the first austenitic alloy material to form a first high-frequency light quantum energy field; the biomass raw material is selectively irradiated in the first high-frequency light quantum energy field to undergo flameless pyrolysis and gasification reaction, and the biomass macromolecules are selectively broken to generate a mixture of combustible gas containing methane, non-methane hydrocarbons, carbon monoxide, and hydrogen, as well as a small amount of solid carbon residue; b) Light quantum steam reforming pretreatment: the mixed combustible gas generated in step a) is introduced into a reforming reaction device together with solid carbon residue through a connecting pipeline and a conveying pump of a material conveying unit, the reforming reaction device is at least partially composed of a second austenitic alloy material; at the same time, a high-temperature steam generation and injection system is started, high-temperature water vapor is generated by a steam generator, and the high-temperature water vapor with a temperature not lower than 150 DEG C is stably introduced into the reforming reaction device through a heat preservation conveying pipe and a flow control valve; c) High-frequency light quantum field excitation: a second high-frequency electromagnetic generator is started, a second high-frequency electromagnetic induction coil surrounding the outside of the reforming reaction device is used to inductively heat the second austenitic alloy material, so that the second austenitic alloy material is excited to form a second high-frequency light quantum energy field in the reforming reaction device; the high-temperature water vapor absorbs energy in the second high-frequency light quantum energy field and is quickly dissociated into hydrogen atoms (·H) and hydroxyl radical (·OH); d) Reforming and water gas shift reaction: under the constraint and catalysis of the second high-frequency light quantum energy field, the hydrogen atoms and hydroxyl radicals generated by dissociation fully contact the mixed combustible gas (methane, non-methane total hydrocarbon, carbon monoxide, etc.) and the solid carbon residue, a roaming chemical reaction occurs, and a steam reforming reaction and a water gas shift reaction are simultaneously performed, so that the carbon elements in the mixed combustible gas and the solid carbon residue are fully converted, a mixed gas mainly composed of hydrogen and carbon monoxide is generated, and the generation of by-products such as tar and coke is significantly reduced; e) Gas separation and purification: the mixed gas generated in step d) is sent into a cooler to be cooled to normal temperature, then the impurities such as dust, trace tar, sulfide and nitrogen oxide in the gas are removed through a purification device, and finally the mixed gas is introduced into a pressure swing adsorption tower or a molecular sieve adsorption device to obtain high-purity green hydrogen.

[0006] The process method provided in the embodiment of the application realizes efficient conversion of biomass raw materials and high-purity preparation of green hydrogen through a three-stage coupling technical route of "flameless pyrolysis + high-frequency light quantum excitation + water vapor reforming", the first high-frequency light quantum energy field ensures sufficient flameless pyrolysis of biomass, and the second high-frequency light quantum energy field promotes efficient dissociation and targeted reaction of water vapor, thereby fundamentally solving the problems of insufficient pyrolysis, low reforming efficiency and many by-products in the traditional process.

[0007] Optionally, the first austenitic alloy material and the second austenitic alloy material are the same or different austenitic alloys and both contain at least two of nickel, chromium, manganese and nitrogen elements; and are subjected to heat treatment to obtain stable thermal electron emission and light quantum radiation characteristics.

[0008] By precisely controlling the chemical composition and heat treatment process of austenitic alloy materials, they can be made to have excellent electromagnetic induction response, photon radiation stability and high temperature corrosion resistance, providing core support for the stable formation of two-stage high-frequency photon energy fields and avoiding the decrease in reaction efficiency or equipment failure due to the degradation of material performance.

[0009] Optionally, in step a), the operating frequency of the first high-frequency electromagnetic generator is 50kHz to 500kHz, and in step c), the operating frequency of the second high-frequency electromagnetic generator is 50kHz to 500kHz. The output power of the first and second high-frequency electromagnetic generators is independently adjustable. The temperature of the primary flameless pyrolysis gasification reaction in step a) is controlled at 400℃ to 700℃, and the temperature of the reforming reaction in step c) is controlled at 600℃ to 950℃. The output power of the high-frequency electromagnetic generator is adjusted in real time through a temperature monitoring system to achieve precise and stable control of the reaction temperature.

[0010] The independent parameter adjustment of the two-stage high-frequency electromagnetic generator can adapt to the different reaction requirements of primary pyrolysis and steam reforming: primary pyrolysis uses a relatively low temperature and appropriate power to ensure the selective cracking of biomass macromolecules into small molecule combustible gases; steam reforming uses a higher temperature and higher power to promote the dissociation of water vapor and the deep conversion of carbon elements, while avoiding energy waste and equipment damage caused by excessively high temperatures.

[0011] Optionally, the temperature of the high-temperature steam introduced in step b) is 150℃~300℃, and the molar ratio of the steam to the mixed combustible gas and the total carbon in the solid carbon slag generated from the conversion of biomass raw materials in step a) is controlled at 1:1~5:1. The amount of steam injected is precisely adjusted by a flow control valve to ensure that the carbon elements react fully with the steam and improve the hydrogen yield.

[0012] By rationally controlling the molar ratio of water vapor to total carbon, the steam reforming reaction and the water-gas shift reaction can be fully carried out, while avoiding the increase in energy consumption and subsequent separation load caused by excessive water vapor. High-temperature water vapor of 150℃ to 300℃ can reduce the temperature fluctuation of the reaction system, improve energy utilization efficiency, and accelerate the dissociation rate of water vapor in the photon energy field.

[0013] Optionally, the primary reaction device is a rotary kiln structure, and the lifting plates and guide vanes of the kiln body as a whole or built-in are made of the first austenitic alloy material. During the reaction, the rotary kiln maintains a rotation speed of 5-30 r / min, so that the biomass raw materials are uniformly exposed to the first high-frequency photon energy field. The reforming reaction device is a rotary kiln tubular reactor structure, and its core radiating components are made of the second austenitic alloy material, ensuring that the mixed combustible gas, solid carbon slag and high-temperature steam are fully mixed and contacted in the reaction device.

[0014] The primary reaction device of the rotary kiln structure avoids local accumulation of biomass raw materials through the synergistic effect of rotation and lifting plates, ensuring uniform contact between the raw materials and the first high-frequency photon energy field, and improving the sufficiency of pyrolysis; the reforming reaction device of the rotary kiln tubular reactor structure prolongs the contact time between the material and the energy field and water vapor, promotes the depth of reaction, and reduces the generation of by-products.

[0015] Optionally, the biomass raw materials include one or more of straw, sawdust, mushroom residue, organic sludge, and biomass solid waste. The raw materials only need to undergo simple pretreatment such as crushing and drying, and can be put into the reaction without complex processing.

[0016] Secondly, embodiments of the present invention provide a system for implementing the above-described process method, comprising: Primary photonic quantum flameless pyrolysis gasification unit: includes a primary reaction device, a first high-frequency electromagnetic induction coil, and a first high-frequency electromagnetic generator; the primary reaction device is a horizontal rotary kiln structure, its cylinder or built-in lifting plates and guide vanes are made of a first austenitic alloy material, and sealed end caps are provided at both ends of the cylinder, and the outside is wrapped with a heat insulation layer; the first high-frequency electromagnetic induction coil is arranged around the outside of the primary reaction device and is electrically connected to the first high-frequency electromagnetic generator for induction heating of the first austenitic alloy material; The photonic quantum steam reforming unit includes a reforming reaction device, a second high-frequency electromagnetic induction coil, and a second high-frequency electromagnetic generator. The reforming reaction device is a horizontal rotary kiln tube reactor structure, with its cylinder or core radiating component made of a second austenitic alloy material. An insulation layer is installed on the outside of the cylinder, and both ends are sealed by sealing components. The second high-frequency electromagnetic induction coil is arranged around the outside of the reforming reaction device and is electrically connected to the second high-frequency electromagnetic generator to excite and form a second high-frequency photonic quantum energy field. Material conveying unit: includes connecting pipeline, conveying pump and check valve; one end of the connecting pipeline is connected to the discharge end of the primary reaction unit and the other end is connected to the feed end of the reforming reaction unit, used to convey mixed combustible gas and solid carbon slag; the conveying pump is set on the connecting pipeline to provide conveying power; the check valve is used to prevent gas or vapor from flowing back in the reforming reaction unit. High-temperature steam generation and injection system: including a steam generator, an insulated delivery pipe, a flow control valve, and a pressure gauge; the steam generator is used to generate high-temperature steam; one end of the insulated delivery pipe is connected to the output end of the steam generator, and the other end extends into the reforming reaction unit to avoid temperature loss during steam delivery; the flow control valve is used to regulate the steam injection rate, and the pressure gauge monitors the steam delivery pressure in real time. The anaerobic environment protection system includes an inert gas storage tank, an inlet pipe, a flow controller, and a sealing assembly. The inert gas storage tank is connected to the cavities of the primary reaction device and the reforming reaction device via the inlet pipe, and is used to introduce inert gases such as nitrogen and argon to create an anaerobic atmosphere. The flow controller regulates the inert gas flow rate, and the sealing assembly ensures the airtightness of the reaction device and maintains a stable anaerobic environment. Product processing unit: includes a cooler, purification equipment, pressure swing adsorption tower or molecular sieve adsorption device, and green hydrogen storage tank; the cooler is a shell-and-tube structure, using circulating water cooling to cool the reformed mixed gas to room temperature; the purification equipment is filled with filter media and adsorbent to remove dust, trace amounts of tar, sulfides, nitrogen oxides, and other impurities from the gas; the pressure swing adsorption tower or molecular sieve adsorption device is used to separate and purify hydrogen to obtain high-purity green hydrogen; the green hydrogen storage tank is used to store the finished green hydrogen, and the storage tank is equipped with a pressure sensor and a flow meter to monitor the storage status in real time.

[0017] The beneficial effects of this invention are: 1. This process constructs a complete conversion pathway of "high-efficiency pyrolysis-deep reforming" through the synergistic linkage of two-stage high-frequency photonic quantum energy fields. In the primary photonic flameless pyrolysis gasification stage, the first high-frequency photonic quantum energy field targets the target chemical bonds of biomass macromolecules, achieving full pyrolysis of biomass feedstock and efficiently converting it into a mixture of small-molecule combustible gases such as methane, non-methane total hydrocarbons, and carbon monoxide, as well as a small amount of solid carbon slag. This avoids the problem of insufficient conversion caused by macromolecule residues in traditional pyrolysis. After entering the photonic steam reforming stage, the second high-frequency photonic quantum energy field not only promotes the rapid dissociation of high-temperature steam into highly reactive hydrogen atoms and hydroxyl radicals, but also provides sufficient energy for the reaction of mixed combustible gases, solid carbon slag, and active species. This promotes the deep progress of steam reforming and water-gas conversion reactions, ensuring that the hydrocarbon components in the mixed combustible gases and the carbon elements in the solid carbon slag are fully converted into hydrogen. This maximizes the utilization of carbon and hydrogen elements in biomass feedstock and significantly improves hydrogen yield.

[0018] 2. The high-frequency photonic quantum energy field has unique energy transfer and activation characteristics. The high-energy photons it releases can precisely act on reactant molecules, such as biomass macromolecules and water vapor molecules, reducing the activation energy required for molecular chemical bond breaking and recombination. This breaks the dependence of traditional steam reforming reactions on high-temperature environments. In this process, the primary pyrolysis gasification reaction temperature is controlled at 400℃~700℃, and the reforming reaction temperature is controlled at 600℃~950℃. Compared with the high temperature of over 1000℃ required by traditional reforming processes, the reaction conditions are more moderate. The moderate reaction temperature not only reduces the risk of corrosion and wear on equipment due to high temperatures, but also significantly reduces energy consumption during the heating process, improving the economy and operational stability of the process.

[0019] 3. This process eliminates the reliance on catalysts in traditional steam reforming reactions. It achieves efficient reaction propulsion through the regulation of two-stage high-frequency photon energy fields. The first photon energy field can directly activate biomass macromolecules and promote their selective cracking. The second photon energy field can efficiently activate high-temperature steam, causing it to dissociate into highly active hydrogen atoms and hydroxyl radicals. At the same time, it stimulates the reactivity of mixed combustible gas and solid carbon slag, providing sufficient active species and energy conditions for the reforming reaction and water-gas conversion reaction. There is no need to add traditional catalytic media such as metal catalysts. This design not only saves the purchase cost of expensive catalysts, but also completely avoids problems such as catalyst deactivation, poisoning, and carbon deposition during use, as well as additional steps such as subsequent catalyst regeneration and waste catalyst treatment. It simplifies the process flow and reduces operating costs and environmental pressure.

[0020] 4. The reaction mechanism of this process is based on the activation and decomposition of carbon-containing organic molecules by a high-frequency photon energy field. It is not limited by the specific type or form of the raw materials. It is not only suitable for conventional biomass raw materials such as straw, sawdust, and mushroom residue, but also for various organic solid wastes such as organic sludge and biomass solid waste. The entire process is carried out in an oxygen-free and flameless manner, using organic solid waste that is originally difficult to dispose of as a conversion raw material. Through the coupled reaction of pyrolysis gasification and steam reforming, it is directionally converted into high-value green hydrogen, realizing a "waste resource utilization" recycling model. There is no wastewater or waste residue discharge during the reaction process, and by-products can be efficiently removed by purification equipment, avoiding environmental pollution caused by the arbitrary disposal of organic solid waste. It not only solves the problem of solid waste treatment, but also provides clean hydrogen energy resources, which meets the requirements of environmental protection and sustainable development. Detailed Implementation

[0021] To better explain and facilitate understanding of the present invention, a detailed description of the invention will be provided through specific embodiments.

[0022] This invention constructs a two-stage photoquantum chemical reaction system. The first stage utilizes a photoquantum field excited by high-frequency electromagnetics to achieve low-temperature and efficient primary cracking of organic matter, converting macromolecules into small-molecule combustible gases and activated carbon slag. The second stage introduces high-temperature water vapor and activates it in another photoquantum field. The generated ultra-highly active free radical species are used to carry out a deep reforming reaction with the primary products, maximizing the conversion of carbon-containing components into H2 and CO, thereby significantly increasing the final hydrogen production.

[0023] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below. While exemplary embodiments of the present invention are set forth below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments described herein. Rather, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the invention to those skilled in the art.

[0024] This system mainly includes a feeding system, a primary photonic quantum pyrolysis rotary kiln, a first high-frequency electromagnetic heating system, a gas-solid product conveying system, a high-temperature steam generator, a photonic quantum steam reforming reactor, a second high-frequency electromagnetic heating system, a gas cooling and purification device, and a pressure swing adsorption (PSA) hydrogen extraction system.

[0025] Using waste plastic (PE) as raw material, the crushed plastic is continuously fed into the primary photonic quantum pyrolysis rotary kiln through a feeding system. The kiln's cylinder is made of a special austenitic alloy (such as 06Cr19Ni10N). The first high-frequency electromagnetic generator is activated, raising the kiln temperature to 550℃ at a frequency of 150 kHz and a power of 200 kW. Under these conditions, a strong photonic quantum field is excited within the alloy kiln body, causing the plastic to rapidly pyrolyze, producing a mixed gas containing CH4, C2-C4 hydrocarbons, H2, CO, and carbon slag.

[0026] These gaseous and solid products are fed together into a photonic steam reforming reactor via a conveying system. The reformer is filled with austenitic alloy (such as 06Cr25Ni20) packing material of the same or higher nickel content. Simultaneously, superheated steam at 400°C generated by high-temperature steam generator 5 is metered into the reformer, activating the second high-frequency electromagnetic generator. At a frequency of 200 kHz and a power of 300 kW, the temperature inside the reformer is maintained at 800°C. At this point, the second photonic field excited by the alloy packing dissociates the steam into highly reactive [H] and [OH], which react violently with hydrocarbon gases and carbon slag from primary cracking. CH4 + H2O → CO + 3H2 C2H6 + 2H2O → 2CO + 5H2 C + H₂O → CO + H₂ The gas produced after the reaction mainly consists of H2 and CO, as well as a small amount of unreacted water vapor and CO2. After the gas mixture is cooled and purified by a gas cooling and purification device to remove dust and tar, it enters the PSA hydrogen extraction system. In the PSA system, H2 is selectively adsorbed and separated, and hydrogen with a purity of over 99.9% is obtained from the hydrogen outlet. The remaining gases (mainly CO and CO2) are discharged from the tail gas outlet and can be used as chemical raw materials or fuel.

[0027] By controlling the amount of steam injected and the reformer temperature, the conversion efficiency (by mass) from plastic to hydrogen in this embodiment can be increased by more than 50% compared to the traditional single-stage pyrolysis gasification method.

[0028] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A process for producing green hydrogen from biomass through flameless pyrolysis and gasification coupled with steam reforming, characterized in that, Includes the following steps: a) Primary photoquantum pyrolysis: Under an oxygen-free environment, biomass feedstock is fed into a primary reaction device, which is at least partially composed of a first austenitic alloy material; the first austenitic alloy material is induction heated by a first high-frequency electromagnetic generator, thereby exciting the first austenitic alloy material to form a first high-frequency photoquantum energy field; the biomass feedstock is irradiated in the first high-frequency photoquantum energy field, undergoing a flameless pyrolysis gasification reaction, and pyrolyzing to generate a mixed combustible gas containing methane, non-methane total hydrocarbons, carbon monoxide and hydrogen, as well as solid carbon slag; b) Photonic steam reforming: The mixed combustible gas generated in step a) and solid carbon slag are introduced into the reforming reaction device through a connecting pipeline. The reforming reaction device is at least partially made of a second austenitic alloy material. At the same time, high-temperature steam at a temperature of not less than 150°C is introduced into the reforming reaction device through a high-temperature steam generation and injection system. c) High-frequency photonic quantum field excitation: The second austenitic alloy material is induction heated by a second high-frequency electromagnetic generator, so that the second austenitic alloy material is excited to form a second high-frequency photonic quantum energy field in the reforming reaction device; the high-temperature water vapor absorbs energy in the second high-frequency photonic quantum energy field and dissociates into hydrogen atoms and hydroxide radicals; d) Reforming and water-gas shift reaction: Under the action of the second high-frequency photon energy field, the hydrogen atoms and hydroxide radicals generated by dissociation undergo a wandering chemical reaction with the mixed combustible gas and solid carbon slag, and simultaneously carry out the reforming reaction and water-gas shift reaction to generate a mixed gas mainly composed of hydrogen and carbon monoxide. e) Gas separation and purification: The mixed gas generated in step d) is cooled and purified sequentially, and then separated and purified by pressure swing adsorption or molecular sieve adsorption to obtain high-purity green hydrogen.

2. The process for producing green hydrogen from biomass through flameless pyrolysis and gasification coupled with steam reforming according to claim 1, characterized in that, The first austenitic alloy material and the second austenitic alloy material are the same or different austenitic alloys, both containing at least two of the elements nickel, chromium, manganese and nitrogen, and after being treated by a special heat treatment process, they have stable thermionic emission and photon radiation characteristics.

3. The process for producing green hydrogen from biomass through flameless pyrolysis and gasification coupled with steam reforming according to claim 1 or 2, characterized in that, In step a), the operating frequency of the first high-frequency electromagnetic generator is 50kHz to 500kHz, and in step c), the operating frequency of the second high-frequency electromagnetic generator is 50kHz to 500kHz. The output power of the first high-frequency electromagnetic generator and the second high-frequency electromagnetic generator are independently adjustable.

4. The process for producing green hydrogen from biomass through flameless pyrolysis and gasification coupled with steam reforming according to claim 1, characterized in that, The primary reaction device is a rotary kiln structure, and its entire kiln body or built-in lifting plates and guide vanes are made of the first austenitic alloy material. During the reaction, the rotary kiln keeps rotating, so that the biomass raw materials are uniformly exposed to the first high-frequency photon energy field. The reforming reaction device is a rotary kiln tubular reactor structure, and its core radiating components are made of the second austenitic alloy material.

5. The process for producing green hydrogen from biomass through flameless pyrolysis and gasification coupled with steam reforming according to claim 1, characterized in that, The temperature of the primary flameless pyrolysis gasification reaction in step a) is controlled at 400℃~700℃; the temperature of the reforming reaction in step c) is controlled at 600℃~950℃.

6. The process for producing green hydrogen from biomass through flameless pyrolysis and gasification coupled with steam reforming according to claim 1, characterized in that, The temperature of the high-temperature steam introduced in step b) is 150℃~300℃, and the molar ratio of the steam to the mixed combustible gas generated from the conversion of biomass raw materials in step a) and the total carbon in the solid carbon slag is controlled at 1:1~5:

1.

7. The process for producing green hydrogen from biomass through flameless pyrolysis and gasification coupled with steam reforming according to claim 1, characterized in that, The biomass raw materials include one or more of the following: straw, sawdust, mushroom residue, organic sludge, and biomass solid waste.

8. A system for implementing the process of producing green hydrogen from biomass through flameless pyrolysis gasification coupled with steam reforming as described in any one of claims 1-7, characterized in that, include: Primary quantum flameless pyrolysis gasification unit: includes a primary reaction device made of a first austenitic alloy material, a first high-frequency electromagnetic induction coil surrounding the outside of the primary reaction device, and a first high-frequency electromagnetic generator electrically connected to the first high-frequency electromagnetic induction coil; A photonic quantum steam reforming unit includes a reforming reaction device made of a second austenitic alloy material, a second high-frequency electromagnetic induction coil surrounding the reforming reaction device, and a second high-frequency electromagnetic generator electrically connected to the second high-frequency electromagnetic induction coil. Material conveying unit: includes connecting pipelines and conveying pumps, wherein the connecting pipelines are used to convey the mixed combustible gas and solid carbon slag generated by the primary quantum flameless pyrolysis gasification unit to the quantum steam reforming unit; High-temperature steam generation and injection system: including a steam generator, insulated delivery pipe and flow control valve, used to stably supply high-temperature steam of not less than 150°C to the quantum steam reforming unit; Anaerobic environment protection system: including inert gas storage tank, gas inlet pipe and sealing components, used to maintain an oxygen-free atmosphere inside the primary reaction unit and reforming reaction unit; Product processing unit: includes a cooler, a purification device, and a pressure swing adsorption tower or molecular sieve adsorption device connected in sequence for separating and purifying hydrogen.

9. A system for producing green hydrogen from biomass through flameless pyrolysis and gasification coupled with steam reforming according to claim 8, characterized in that, The primary reaction device is a horizontal rotary kiln, and its cylinder or internal lifting components are made of the first austenitic alloy material; the reforming reaction device is a horizontal rotary kiln tubular reactor, and its cylinder or core radiating components are made of the second austenitic alloy material.