WO2021056423A1 - 一种电解水制氢耦合锅炉富氧燃烧系统 - Google Patents

一种电解水制氢耦合锅炉富氧燃烧系统 Download PDF

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WO2021056423A1
WO2021056423A1 PCT/CN2019/108579 CN2019108579W WO2021056423A1 WO 2021056423 A1 WO2021056423 A1 WO 2021056423A1 CN 2019108579 W CN2019108579 W CN 2019108579W WO 2021056423 A1 WO2021056423 A1 WO 2021056423A1
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oxygen
hydrogen
water
boiler
separator
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PCT/CN2019/108579
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English (en)
French (fr)
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李彩云
吕洲
高维
路丕思
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国电龙源电力技术工程有限责任公司
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Publication of WO2021056423A1 publication Critical patent/WO2021056423A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/002—Gaseous fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • F23L7/007—Supplying oxygen or oxygen-enriched air
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

Definitions

  • the invention relates to a hydrogen production system by electrolysis of water, and more specifically, to an oxygen-enriched combustion system of a coupled boiler for hydrogen production by electrolysis.
  • Hydrogen is the main industrial raw material, as well as the most important industrial gas and specialty gas.
  • various processes used in petroleum refining and petrochemical industries such as hydrocracking, hydrorefining, hydrodesulfurization, etc., are raw materials for synthetic ammonia and organic fluorine chemical production in basic industrial production; many The production of chemicals consumes hydrogen.
  • hydrogen and chlorine are used to synthesize hydrogen chloride (the aqueous solution is hydrochloric acid).
  • Hydrogen reacts with certain organic substances to produce alcohols, aldehydes, acetic acid, amines, etc.; in the production of daily fine chemicals, it is used for artificial
  • the fats in products such as butter, edible oil, household cleaners, etc. are hydrogenated.
  • the hydrogen produced by water electrolysis does not contain CO, sulfur, hydrocarbon and other impurities, is environmentally friendly, and has the characteristics of flexible production, high purity (usually above 99.7%), and by-product high-value oxygen.
  • its unit energy consumption is about 4-5 kWh/cubic hydrogen, and the production cost is greatly affected by the electricity price, which accounts for more than 70% of the total cost.
  • the state and local governments have issued policies to support the production of hydrogen from electrolyzed water by using cheap and abundant renewable energy or limiting the maximum electricity price.
  • the present invention provides an oxy-fuel combustion system for coupled boilers for producing hydrogen from electrolyzed water. While producing a large amount of hydrogen, it makes full use of the high-value by-product oxygen, thereby reducing costs and realizing economy. The purpose of benefit.
  • the present invention provides the following technical solutions on one aspect:
  • An oxygen-enriched combustion system for a coupled boiler of electrolyzed hydrogen production including: an electrolyzed hydrogen production system and a boiler oxygen-enriched combustion system; wherein the electrolyzed water hydrogen production system is used to electrolyze water to produce hydrogen and oxygen; the boiler is oxygen-enrich
  • the combustion system is connected to the oxygen output end of the electrolysis water hydrogen production system, and the oxygen produced by the electrolysis water hydrogen production system is used to realize the oxygen-enriched combustion of the boiler.
  • the electrolyzed water hydrogen production system includes: a water replenishment system, a lye circulation system, an electrolytic cell, and a hydrogen purification system; wherein the water replenishment system is used To replenish pure water to the hydrogen purification system; the lye circulation system is respectively connected with the electrolyte input end of the electrolytic cell and the liquid phase output end of the hydrogen purification system, and is used for replenishing the hydrogen purification system
  • the electrolytic lye is recovered, and the electrolytic lye is provided to the electrolytic cell;
  • the electrolyzer is connected to the output end of the lye circulation system, and is used for receiving the electrolyzed lye and electrolyzing the pure water under the action of direct current Hydrogen and oxygen are generated;
  • the hydrogen purification system is connected to the output end of the electrolytic cell, the output end of the water supplement system and the input end of the lye circulation system respectively, and is used to receive the rich flow
  • the water replenishment system includes a pure water device, a raw material water tank, and a water replenishment pump, wherein the pure water device is used to purify the water source to obtain pure water.
  • Water the raw material water tank is connected to the pure water device and is used to store pure water; the water supplement pump is used to extract pure water from the raw material water tank and deliver it to the target equipment.
  • the lye circulation system includes an lye circulation pump, an lye cooler and an lye circulation pipeline; wherein the lye circulation pipelines are respectively Connecting the liquid phase output end of the hydrogen purification system and the input end of the electrolytic cell, the lye circulation pump is arranged on the lye circulation pipeline to provide power for lye circulation, and the lye cooler It is arranged on the lye circulation pipeline and is used for cooling and filtering the lye.
  • the output end of the electrolytic cell includes a hydrogen-rich electrolyte output end and an oxygen-rich electrolyte output end, which are respectively used for outputting hydrogen-rich electrolyte.
  • the electrolyte and the electrolyte rich in oxygen; preferably, the input end of the electrolytic tank is also connected with the water supplement system.
  • the hydrogen purification system includes a hydrogen purification sub-system and an oxygen purification sub-system;
  • the hydrogen purification subsystem includes a hydrogen separator, a hydrogen comprehensive tower, a hydrogen water separator, and a hydrogen pressure regulator connected in sequence; wherein, the hydrogen separator is used to separate the hydrogen-rich electrolyte from the electrolytic cell. Electrolyte and hydrogen; the hydrogen integrated tower is used to wash and cool the hydrogen separated from the hydrogen separator; the hydrogen-water separator is used to separate the hydrogen discharged from the hydrogen integrated tower; the hydrogen The pressure regulating device is used to stabilize the pressure of the dry and pure hydrogen discharged from the hydrogen water separator, and then transport it out of the hydrogen purification system;
  • the oxygen purification subsystem includes an oxygen separator, an oxygen comprehensive tower, an oxygen water separator, and an oxygen pressure regulating device connected in sequence; wherein, the oxygen separator is used to separate oxygen-rich electrolyte from the electrolytic cell Electrolyte and oxygen; the oxygen integrated tower is used to wash and cool the oxygen separated from the oxygen separator; the oxygen water separator is used to separate the oxygen discharged from the oxygen integrated tower in gas and liquid, and the oxygen The pressure regulating device is used to stabilize the dry and pure oxygen discharged from the oxygen-water separator, and then transport it out of the hydrogen purification system;
  • the liquid phase outlets of the hydrogen separator and the oxygen separator are both connected to the alkaline liquid circulation system.
  • the hydrogen synthesis tower and the oxygen synthesis tower are both connected to the alkali liquor circulation system.
  • the hydrogen-water separator and the oxygen-water separator are connected to the lye circulation system; or, the hydrogen-water separator, the The oxygen water separator is connected with the water supplement system, and the pure water separated by the hydrogen water separator and the oxygen water separator enters the water supplement system for recycling.
  • the boiler oxy-fuel combustion system includes: an oxygen decompression device, an oxygen secondary air mixing system, a fan, and a boiler; wherein, the oxygen reduction device
  • the pressure device is connected to the hydrogen purification system of the water electrolysis hydrogen production system, and is used to depressurize the oxygen output from the hydrogen purification system;
  • the oxygen secondary air mixing system is respectively connected to the fan and the oxygen pressure reducing device, Used to mix the secondary air delivered from the fan and the oxygen output from the oxygen decompression device;
  • the boiler is connected to the oxygen secondary air mixing system, and the oxygen secondary air mixing system outputs the rich The oxygen mixed gas is sent to the boiler for combustion.
  • the pipeline of the boiler oxy-fuel combustion system is also provided with a flow regulating valve for regulating the size of the oxygen flow.
  • the present invention produces hydrogen through electrolysis of water, which is green and environmentally friendly, and has flexible production methods.
  • the produced hydrogen has high purity and large output, which can provide guarantee for petrochemical production.
  • the most excellent effect of the present invention is to make full use of the high-value by-product oxygen, and send the oxygen to the coal-fired boiler to realize the oxy-fuel combustion of the boiler; it can not only greatly reduce the overall cost of the electrolyzed hydrogen production system, but also for power plants On the other hand, it also has the excellent effects of saving energy, improving the internal combustion intensity of the boiler, reducing the loss of smoke exhaust, and improving the efficiency of the boiler.
  • Figure 1 is a schematic diagram of an oxy-fuel combustion system for a coupled boiler for electrolyzed hydrogen production provided by a preferred embodiment of the present invention
  • the present invention provides an oxy-fuel combustion system for a coupled boiler for electrolyzed water hydrogen production.
  • the system includes an electrolyzed water hydrogen production system and a boiler oxy-fuel combustion system;
  • the hydrogen system is used to electrolyze water to prepare hydrogen and oxygen;
  • the boiler oxy-fuel combustion system is connected to the oxygen output end of the electrolyzed water hydrogen system, and is used to use the oxygen produced by the electrolyzed water hydrogen system to realize the boiler's oxy-fuel combustion.
  • the electrolyzed water hydrogen production system includes a water replenishment system, a lye circulation system, an electrolytic cell 20, and a hydrogen purification system;
  • the water replenishment system is used to produce pure water and replenish pure water to the electrolyzed hydrogen production system
  • the lye circulation system is respectively connected to the electrolyte input end of the electrolytic cell 20 and the liquid phase output end of the hydrogen purification system, and is used to recover the electrolytic lye from the hydrogen purification system and provide the electrolyte lye to the electrolyzer; in other words, the lye
  • the circulation system is used to provide the lye as the electrolyte to the electrolytic cell, and at the same time recover the lye from the hydrogen purification system for reuse;
  • the electrolyzer 20 is the main place for the production of hydrogen and oxygen by electrolyzing pure water. It is connected to the output end of the lye circulation system and the output end of the water replenishment system respectively, and is used to receive the electrolyzed lye and pure water and is pure under the action of direct current.
  • the electrolysis reaction of water produces hydrogen and oxygen;
  • the hydrogen purification system is respectively connected with the output end of the electrolytic cell 20, the output end of the water supplement system and the input end of the lye circulation system, and is used to receive the hydrogen-rich electrolytic lye and the oxygen-rich electrolytic lye from the electrolytic cell 20 And separate and purify hydrogen and oxygen respectively; meanwhile, transport the separated electrolyte lye to the lye circulation system.
  • the water supplement system includes a pure water device 11, a raw material water tank 12, and a supplement water pump 13.
  • the pure water device 11 is used to purify a water source (such as tap water). Pure water (specifically deionized water) is obtained by processing; the raw material water tank 12 is connected to the pure water device 11 for storing pure water; the make-up pump 13 is used for extracting pure water from the raw material water tank 12 and transporting it to the target equipment.
  • fresh tap water When in use, fresh tap water first enters the water replenishment system, is processed by the pure water device 11, and then enters the raw water tank 12, and then the water replenishment pump 13 supplies water to other equipment of the electrolysis water hydrogen production system, including water supply to the hydrogen purification system.
  • the pure water in the purification system flows through a hydrogen (oxygen) comprehensive tower, a hydrogen (oxygen) gas-water separator and other equipment to separate the hydrogen-rich electrolytic lye from the electrolyzer and the oxygen-rich electrolytic lye.
  • the water supplement system can also be connected to the electrolytic cell 20 to supply water to the electrolytic cell 20.
  • the lye circulation system includes an lye circulation pump 41, an lye cooler 42 and an lye circulation pipeline, wherein the lye circulation pipelines are respectively connected to the hydrogen purification
  • the lye circulation pump 41 is installed on the lye circulation pipeline to provide power for lye circulation
  • the lye cooler 42 is installed on the lye circulation pipeline for Cool and filter the lye.
  • the electrolyte flowing out from the output end of the electrolytic cell 20 enters the hydrogen purification system, and after hydrogen and oxygen are separated therefrom, the electrolyte lye and pure water enter the lye circulation pipeline and are pumped out by the lye circulation pump 41.
  • the lye cooler 42 After the lye cooler 42 is cooled and filtered, it enters the electrolytic cell 20 again to participate in the electrolysis reaction, thereby realizing lye circulation in the electrolyzed water hydrogen production system.
  • the alkali concentration of the electrolytic lye in the electrolytic cell can be adjusted according to the actual situation. When the concentration of the lye returned through the lye circulation system is low, the amount of water supplied to the electrolytic cell by the water replenishment system can be reduced. Maintain the alkali concentration of the electrolytic lye in the electrolytic cell under the required conditions.
  • the electrolytic cell 20 is a place where pure water undergoes electrolysis to generate hydrogen and oxygen.
  • the input end of the electrolytic cell 20 is connected to the lye circulation system, and the output end is connected to the hydrogen purification system; the liquid phase from the lye circulation system (containing pure water) Entering the electrolytic cell, the pure water begins to decompose under the action of direct current, and hydrogen and oxygen are respectively generated on the cathode and anode plates of the electrolysis cell; these hydrogen and oxygen flow out from the two ends of the electrolytic cell with the electrolyte and enter the hydrogen purification system.
  • the electrolyte flowing out from the output end of the electrolytic cell 20 has two paths: one is the electrolyte rich in hydrogen, and the other is the electrolyte rich in oxygen, which are respectively output from the hydrogen-rich electrolyte output end and the oxygen-rich electrolyte output end
  • the output enters the hydrogen separator 31 and the oxygen separator 33 placed in the hydrogen purification system. After the hydrogen and oxygen are separated respectively, the two electrolytic lyes are combined and transported to the lye circulation system for recycling.
  • the input end of the electrolytic cell 20 is also connected to a water supplement system, and the pure water from the water supplement system is transported into the electrolytic cell 20 when needed.
  • the hydrogen purification system includes a hydrogen purification sub-system and an oxygen purification sub-system.
  • the hydrogen purification subsystem includes a hydrogen separator 31, a hydrogen comprehensive tower 32, a hydrogen water separator 35, and a hydrogen pressure regulator connected in sequence; wherein the inlet of the hydrogen separator 31 is connected to the hydrogen-rich electrolyte output end of the electrolytic cell 20 , Used to separate the electrolyte and hydrogen from the hydrogen-rich electrolyte flowing out of the electrolytic cell 20; the inlet of the hydrogen synthesis tower 32 is connected with the gas phase outlet of the hydrogen separator 31, and is used to wash and cool the separated hydrogen separator 31 Hydrogen; the inlet of the hydrogen water separator 35 is connected with the gas phase outlet of the hydrogen synthesis tower 32, and is used for gas-liquid separation of the hydrogen discharged from the hydrogen synthesis tower to obtain dry and pure hydrogen; the hydrogen pressure regulator is used for the hydrogen water separator The dried and pure
  • the oxygen purification subsystem includes an oxygen separator 33, an oxygen comprehensive tower 34, an oxygen water separator 36, and an oxygen pressure regulator connected in sequence; wherein, the inlet of the oxygen separator 33 is connected to the oxygen-rich electrolyte output end of the electrolytic cell 20 , Used to separate the electrolyte and oxygen from the oxygen-rich electrolyte flowing out of the electrolytic cell 20; the inlet of the oxygen synthesis tower 34 is connected to the gas phase outlet of the oxygen separator 33, and is used to wash and cool the separated oxygen from the oxygen separator 33 Oxygen; the inlet of the oxygen-water separator 36 is connected to the gas-phase outlet of the oxygen synthesis tower 34, which is used for gas-liquid separation of the oxygen discharged from the oxygen synthesis tower 34 to obtain dry and pure oxygen.
  • the oxygen pressure regulator is used to separate oxygen and water The dry and pure oxygen discharged from the device 34 is stabilized and then sent out of the hydrogen purification system.
  • the hydrogen purification system consists of a hydrogen (oxygen) separator, a hydrogen (oxygen) integrated tower, a hydrogen (oxygen) gas-water separator, a hydrogen (oxygen) gas pressure regulator and other equipment.
  • the electrolyte containing hydrogen and oxygen is first passed through a hydrogen (oxygen) separator, where the hydrogen (oxygen) gas is separated from the electrolyte lye under the action of gravity, and the separated hydrogen (oxygen) gas is in the hydrogen (oxygen) comprehensive tower
  • the inside is washed and cooled, and the liquid droplets are separated and removed in the hydrogen (oxygen) gas-water separator.
  • the hydrogen purification system is sent out to the respective application area; in other words, on the one hand, the hydrogen-rich The electrolyte first passes through the hydrogen separator 31, and is separated from the electrolytic alkaline solution by gravity. The separated hydrogen is washed (using pure water), cooled in the hydrogen synthesis tower 32, and then separated in the hydrogen water separator 35. The liquid droplets are removed, after being stabilized by the hydrogen pressure regulator, the hydrogen purification system is sent out to its application areas such as chemical plants; on the other hand, the oxygen-rich electrolyte first passes through the oxygen separator 33 and is combined with the electrolytic alkali under the action of gravity.
  • the liquid undergoes sedimentation and separation, and the separated oxygen is washed (using pure water) and cooled in the oxygen synthesis tower 34, and then separated and removed in the oxygen water separator 36, and sent to the hydrogen purification system after being stabilized by the oxygen pressure regulator. , Enter its application area such as boiler for combustion.
  • the liquid phase obtained by the gas-liquid separation can be Recycling; for example, first, the liquid phase outlets of the hydrogen separator 31 and the oxygen separator 33 are connected to the lye circulation system, so that most of the electrolytic lye can be recovered.
  • the hydrogen synthesis tower 32 and the oxygen synthesis tower 34 are both connected to the lye circulation system, so that the washing water of the hydrogen synthesis tower 32 and the oxygen synthesis tower 34 can both enter the lye circulation system for recycling.
  • the hydrogen-water separator 35 and the oxygen-water separator 36 can be connected to the lye circulation system, and the pure water separated by the hydrogen-water separator 35 and the oxygen-water separator 36 can enter the lye circulation system for recycling; or, hydrogen water
  • the separator 35 and the oxygen-water separator 36 may also be connected to the water supplement system, and the pure water separated by the hydrogen-water separator 35 and the oxygen-water separator 36 enters the water supplement system for recycling.
  • the boiler oxy-fuel combustion system mainly includes an oxygen decompression device 51, an oxygen secondary air mixing system 52, a fan 53, a boiler 54, etc.; among them, the oxygen reduction device
  • the pressure device 51 is connected to the hydrogen purification system of the hydrogen production system by electrolysis, and is used to depressurize the oxygen output from the hydrogen purification system;
  • the oxygen secondary air mixing system 52 is respectively connected to the fan 53 and the oxygen pressure reducing device 51 for mixing fans 53
  • the boiler 54 is connected to the oxygen secondary air mixing system 52, and the oxygen secondary air mixture output from the oxygen secondary air mixing system 52, that is, the oxygen-rich mixed gas is It is sent to the boiler 54 for combustion.
  • the by-product from the electrolysis water hydrogen production system-oxygen is decompressed by the oxygen decompression device 51 and then sent to the oxygen secondary air mixing system 52 to mix with the secondary air to form an oxygen-rich mixed gas, which is then sent to the boiler 54 is burned.
  • the electrolytic cell 20 When the above-mentioned electrolyzed hydrogen production coupled boiler oxy-fuel combustion system is used, the electrolytic cell 20 is activated to start the electrolysis of water.
  • the electrolyte from the electrolytic cell 20 has two paths: one is rich in hydrogen, and the other is rich in oxygen.
  • the hydrogen separator 31 and the oxygen separator 33 in the hydrogen purification system the gas and the electrolytic alkaline solution are separated under the action of gravity, and the separated hydrogen and oxygen enter the hydrogen comprehensive tower 32 and the oxygen comprehensive tower 34 for washing and cooling. , And then enter the hydrogen-water separator 35 and the oxygen-water separator 36 to separate and remove the droplets to obtain hydrogen and oxygen respectively.
  • the hydrogen purification system After being stabilized by their respective pressure regulators, they are sent to the hydrogen purification system; among them, the hydrogen is sent to the petrochemical plant to participate Petrochemical production, and oxygen is sent to the boiler system: first enter the oxygen secondary air mixing system 52 through the oxygen decompression device 51 and mix with the secondary air to form an oxygen-enriched mixed gas, which is sent to the furnace to achieve oxygen-enriched combustion in the boiler .
  • the size of the oxygen flow is controlled by a flow regulating valve on the pipeline, and the secondary air is provided by the secondary fan 53.
  • the pure water used in the hydrogen (oxygen) integrated tower and hydrogen (oxygen) gas-water separator in the above-mentioned electrolyzed hydrogen production coupled boiler oxy-fuel combustion system for washing, cooling, and separation of equipment comes from the water supplement system.
  • Fresh tap water first enters the water replenishment system, is processed by the pure water device 11, and then enters the raw water tank 12, and is sent into the hydrogen purification system by the water replenishment pump 13, where the pure water flows through the hydrogen (oxygen) comprehensive tower 32, 34, Hydrogen (oxygen) gas-water separators 35, 36 and other equipment wash, cool and separate hydrogen and oxygen to obtain pure and dry hydrogen and oxygen, and the obtained washing liquid and pure water are finally separated from the two-way electrolytic alkali
  • the liquid is merged, cooled and filtered by the lye circulation pump 41 through the lye cooler 42, and then enters the electrolytic cell 42 again.

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Abstract

一种电解水制氢耦合锅炉富氧燃烧系统，其包括电解水制氢系统及锅炉富氧燃烧系统，所述电解水制氢系统用于电解水制备氢气和氧气，所述锅炉富氧燃烧系统利用所述电解水制氢系统生产的氧气实现锅炉的富氧燃烧。该系统绿色环保，生产方式灵活，制取的氢气纯度高、产量大，能为石油化工生产提供保障；同时充分利用高价值的副产物氧气，将氧气送入燃煤锅炉实现锅炉的富氧燃烧，不仅能整体上大幅降低电解水制氢系统的成本，同时对于电厂侧来说，能够节省能源，提高锅炉内部燃烧强度，减少排烟损失，提高锅炉效率。

Description

一种电解水制氢耦合锅炉富氧燃烧系统 技术领域
本发明涉及一种电解水制氢系统，更确切的说涉及一种电解水制氢耦合锅炉富氧燃烧系统。
背景技术
氢是主要的工业原料，也是最重要的工业气体和特种气体。在石油化工生产中，用于石油炼制和石油化工的各种工艺过程，如加氢裂化、加氢精制、加氢脱硫等，在基础工业生产中是合成氨、有机氟化工生产的原料；许多化学品的生产都要消耗氢，例如氢气与氯气合成氯化氢(其水溶液为盐酸)，氢与某些有机物作用生成醇、醛、醋酸、胺等；在日用精细化工生产中，用来对人造黄油、食用油、家庭清洁剂等产品中的脂肪进行氢化。
随着国民经济的快速增长，人类生活质量的不断提高，社会各行业对氢气的需求将日趋增多，其用途十分广泛。以水电解方式制得的氢气不含CO、硫、碳氢等杂质，绿色环保，同时具有生产灵活、纯度高(通常在99.7％以上)以及副产高价值氧气等特点。但其单位能耗约在4-5千瓦时/立方氢，制取成本受电价的影响很大，电价占到总成本的70％以上。目前国家和地方出台政策，利用廉价且丰富的可再生能源或者是最高电价限定等支持电解水制氢。各大企业及科研院所也从材料、设计工艺等方面进行研究以其降低制氢成本。各项工作的的重点都放在了氢气制取本身，对于高价值副产物氧气目前仍然没有找到更合适的利用场合。据调研，目前大多数制氢项目氧气都是直接排入大气中，无形中造成了大量的资源浪费。
发明内容
基于现有技术所存在的问题，本发明提供了一种电解水制氢耦合锅炉富氧燃烧系统，在大量制取氢气的同时，充分利用高价值的副产物氧气，从而达到降低成本，实现经济效益的目的。
为了实现上述目的，本发明一方面提供如下技术方案：
一种电解水制氢耦合锅炉富氧燃烧系统，包括：电解水制氢系统及锅炉富氧燃烧系统；其中，所述电解水制氢系统用于电解水制备氢气和氧气；所述锅炉富氧燃烧系统与所述电解水制氢系统的氧气输出端连接，利用所述电解水制氢系统生产的氧气实现锅炉的富氧燃烧。
上述电解水制氢耦合锅炉富氧燃烧系统，作为一种优选实施方式，所述电解水制氢系统包括：补水系统、碱液循环系统、电解槽、氢纯化系统；其中，所述补水系统用于向所述氢纯化系统补充纯水；所述碱液循环系统，分别与所述电解槽的电解液输入端、所述氢纯化系统的液相输出端连接，用于从所述氢纯化系统回收电解碱液，并向所述电解槽提供电解碱液；所述电解槽，与所述碱液循环系统的输出端连接，用于接收电解碱液并且在直流电的作用下纯水发生电解反应生成氢气和氧气；所述氢纯化系统，分别与所述电解槽的输出端、所述补水系统的输出端和所述碱液循环系统的输入端连接，用于接收所述电解槽流出的富含氢气的电解碱液和富含氧气的电解碱液，并分别分离纯化氢气、氧气。
上述电解水制氢耦合锅炉富氧燃烧系统，作为一种优选实施方式，所述补水系统包括纯水装置、原料水箱、补水泵，其中，所述纯水装置用于对水源进行纯化处理得到纯水；所述原料水箱与所述纯水装置连接，用于储存纯水；所述补水泵用于从所述原料水箱抽取纯水输送至目标设备。
上述电解水制氢耦合锅炉富氧燃烧系统，作为一种优选实施方式，所述碱液循环系统包括碱液循环泵、碱液冷却器以及碱液循环管道；其中，所述碱液循环管道分别连接所述氢纯化系统的液相输出端和所述电解槽的输入端，所述碱液循环泵设置于所述碱液循环管道上用于提供碱液循环的动力，所述碱液冷却器设置于所述碱液循环管道上，用于对所述碱液进行冷却过滤处理。
上述电解水制氢耦合锅炉富氧燃烧系统，作为一种优选实施方式，所述电解槽的输出端包括富含氢气电解液输出端和富含氧气电解液输出端，分别用于输出富含氢气的电解液和富含氧气的电解液；优选地，所述电解槽的输入端还与所述补水系统连接。
上述电解水制氢耦合锅炉富氧燃烧系统，作为一种优选实施方式，所述 氢纯化系统包括氢气纯化子系统和氧气纯化子系统；
所述氢气纯化子系统包括依次连接的氢分离器、氢综合塔、氢气水分离器、氢气调压装置；其中，所述氢气分离器用于从所述电解槽流出的富含氢气电解液中分离电解液和氢气；所述氢综合塔用于洗涤、冷却所述氢分离器中分离出的氢气；所述氢气水分离器用于对所述氢综合塔排出的氢气进行气液分离；所述氢气调压装置用于对所述氢气水分离器排出的干燥纯净的氢气进行稳压处理，然后输送出所述氢纯化系统；
所述氧气纯化子系统包括依次连接的氧分离器、氧综合塔、氧气水分离器、氧气调压装置；其中，所述氧气分离器用于从所述电解槽流出的富含氧气电解液中分离电解液和氧气；所述氧综合塔用于洗涤、冷却所述氧分离器中分离出的氧气；所述氧气水分离器用于对所述氧综合塔排出的氧气进行气液分离，所述氧气调压装置用于对所述氧气水分离器排出的干燥纯净的氧气进行稳压处理，然后输送出所述氢纯化系统；
所述氢分离器和所述氧分离器的液相出口都与所述碱液循环系统连接。
上述电解水制氢耦合锅炉富氧燃烧系统，作为一种优选实施方式，所述氢综合塔、所述氧综合塔都与所述碱液循环系统连接。
上述电解水制氢耦合锅炉富氧燃烧系统，作为一种优选实施方式，所述氢气水分离器、所述氧气水分离器与碱液循环系统连接；或者，所述氢气水分离器、所述氧气水分离器与所述补水系统连接，氢气水分离器和氧气水分离器分离的纯水以进入补水系统循环使用。
上述电解水制氢耦合锅炉富氧燃烧系统，作为一种优选实施方式，所述锅炉富氧燃烧系统包括：氧气减压装置、氧气二次风混合系统、风机、锅炉；其中，所述氧气减压装置与电解水制氢系统的氢纯化系统连接，用于为所述氢纯化系统输出的氧气减压；所述氧气二次风混合系统分别与所述风机和所述氧气减压装置连接，用于混合从所述风机输送而来的二次风和所述氧气减压装置输出的氧气；所述锅炉与所述氧气二次风混合系统连接，所述氧气二次风混合系统输出的富氧混合气体被输送至所述锅炉进行燃烧。
上述电解水制氢耦合锅炉富氧燃烧系统，作为一种优选实施方式，所述锅炉富氧燃烧系统中管路上还设有流量调节阀，用于调控氧气流量的大小。
与最接近的现有技术相比，本发明提供的技术方案具有如下有益效果：
1)本发明通过电解水制取氢气，绿色环保，生产方式灵活，制取的氢气纯度高、产量大，能为石油化工生产提供保障。
2)同时本发明的最大优异效果是充分利用高价值的副产物氧气，将氧气送入燃煤锅炉实现锅炉的富氧燃烧；不仅能整体上大幅降低电解水制氢系统的成本，同时对于电厂侧来说，还具有节省能源，提高锅炉内部燃烧强度，减少排烟损失，提高锅炉效率的优异效果。
附图说明
构成本申请的一部分的说明书附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。
图1为本发明优选实施例提供的一种电解水制氢耦合锅炉富氧燃烧系统示意图；
图中：11、纯水装置；12、原料水箱；13、补水泵；20、电解槽；31、氢分离器；32、氢综合塔；33、氧分离器；34、氧综合塔；35-氢气水分离器；36-氧气水分离器；41、碱液循环泵；42、碱液冷却器；51、氧气减压装置；52、氧气二次风混合系统；53、风机；54、锅炉。
具体实施方式
下面将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
在本发明的描述中，术语“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明而不是要求本发明必须以特定的方位构造和操作，因此不能理解为对本发明的限制。本发明中使用的术语“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接；可以是直接相连，也可以通过中间部件间接相连，对于本领域的普通技术人员而言，可以根据具体情况理解上述术语的具体含义。
根据本发明的具体实施方式，如图1所示，本发明提供一种电解水制氢耦合锅炉富氧燃烧系统，该系统包括电解水制氢系统及锅炉富氧燃烧系统； 其中，电解水制氢系统用于电解水制备氢气和氧气；锅炉富氧燃烧系统，与电解水制氢系统的氧气输出端连接，用于利用电解水制氢系统生产的氧气实现锅炉的富氧燃烧。
上述电解水制氢耦合锅炉富氧燃烧系统的示例性实施例中，电解水制氢系统包括补水系统、碱液循环系统、电解槽20、氢纯化系统；其中，
补水系统用于制取纯水并向电解水制氢系统补充纯水；
碱液循环系统，分别与电解槽20的电解液输入端、氢纯化系统的液相输出端连接，用于从氢纯化系统回收电解碱液，并向电解槽提供电解碱液；换言之，碱液循环系统用于向电解槽提供作为电解液的碱液，同时从氢纯化系统中回收碱液以重复利用；
电解槽20，为电解纯水制取氢气和氧气的主要场所，分别与碱液循环系统的输出端、补水系统的输出端连接，用于接收电解碱液和纯水并且在直流电的作用下纯水发生电解反应生成氢气和氧气；
氢纯化系统，分别与电解槽20的输出端、补水系统的输出端和碱液循环系统的输入端连接，用于接收电解槽20流出的富含氢气的电解碱液和富含氧气的电解碱液，并分别分离纯化氢气、氧气；同时将分离出的电解碱液输送至碱液循环系统。
上述电解水制氢耦合锅炉富氧燃烧系统的示例性实施例中，补水系统包括纯水装置11、原料水箱12、补水泵13，其中，纯水装置11用于对水源(比如自来水)进行纯化处理得到纯水(具体为去离子水)；原料水箱12与纯水装置11连接，用于储存纯水；补水泵13用于从原料水箱12抽取纯水输送至目标设备。使用时，新鲜自来水首先进入补水系统内，经其中的纯水装置11处理后进入原料水箱12，再由补水泵13向电解水制氢系统的其他设备供水，包括向氢纯化系统供水，在氢纯化系统内纯水流经氢(氧)综合塔、氢(氧)气水分离器等设备，对从电解槽流出的富含氢气的电解碱液和富含氧气的电解碱液中分离出的湿润的氢气和氧气进行洗涤、冷却，排出的洗涤后的水会进入碱液循环系统，经氢(氧)气水分离器实现气水分离后分别得到干燥纯净的氢气及氧气，分离出的水与氢纯化系统排出的碱液一起进入碱液循环系统，从而实现向系统补水。优选地，补水系统还可与电解槽20连接，向电解槽20供水。
上述电解水制氢耦合锅炉富氧燃烧系统的示例性实施例中，碱液循环系统包括碱液循环泵41、碱液冷却器42以及碱液循环管道，其中，碱液循环管道分别连接氢纯化系统的液相输出端和电解槽20的输入端，碱液循环泵41设置于碱液循环管道上用于提供碱液循环的动力，碱液冷却器42设置于碱液循环管道上，用于对碱液进行冷却过滤处理。具体地，由电解槽20的输出端流出的电解液进入氢纯化系统内，从中分离出氢气和氧气后，电解碱液和纯水进入碱液循环管道，由碱液循环泵41泵出，经碱液冷却器42冷却过滤后，再次进入电解槽20内参与电解反应，从而在电解水制氢系统中实现碱液循环。在本发明的系统中，电解槽中电解碱液的碱浓度可根据实际情况进行调节，当经碱液循环系统返回的碱液浓度偏低时，可以减少补水系统对电解槽的补水量，以维持电解槽内电解碱液的碱浓度在所需条件下。
电解槽20是纯水发生电解反应生成氢气和氧气的场所，电解槽20的输入端与碱液循环系统连接，输出端与氢纯化系统连接；出自碱液循环系统的液相(含有纯水)进入电解槽，纯水在直流电的作用下开始分解，在电解小室的阴阳极板上分别产生氢气和氧气；这些氢气和氧气随电解液分别从电解槽两端流出进入氢纯化系统，具体地，由电解槽20的输出端流出的电解液有两路：一路为富含氢气的电解液，另一路富含氧气的电解液，分别由富含氢气电解液输出端和富含氧气电解液输出端输出，进入置于氢纯化系统内的氢分离器31和氧分离器33中，分别分离出氢气和氧气后，两路的电解碱液汇合，输送至碱液循环系统回收利用。优选地，电解槽20的输入端还与补水系统连接，出自补水系统的纯水在需要时被输送至电解槽20内。
上述电解水制氢耦合锅炉富氧燃烧系统的示例性实施例中，氢纯化系统包括氢气纯化子系统和氧气纯化子系统。氢气纯化子系统包括依次连接的氢分离器31、氢综合塔32、氢气水分离器35、氢气调压装置；其中，氢气分离器31的入口与电解槽20的富含氢气电解液输出端连接，用于从电解槽20流出的富含氢气电解液中分离电解液和氢气；氢综合塔32的入口与氢气分离器31的气相出口连接，用于洗涤、冷却氢分离器31中分离出的氢气；氢气水分离器35的入口与氢综合塔32的气相出口连接，用于对氢综合塔排出的氢气进行气液分离，得到干燥纯净的氢气；氢气调压装置用于对氢气水分离器35排出的干燥纯净的氢气进行稳压处理，然后输送出氢纯化系统。
氧气纯化子系统包括依次连接的氧分离器33、氧综合塔34、氧气水分离器36、氧气调压装置；其中，氧气分离器33的入口与电解槽20的富含氧气电解液输出端连接，用于从电解槽20流出的富含氧气电解液中分离电解液和氧气；氧综合塔34的入口与氧气分离器33的气相出口连接，用于洗涤、冷却氧分离器33中分离出的氧气；氧气水分离器36的入口与氧综合塔34的气相出口连接，用于对氧综合塔34排出的氧气进行气液分离，得到干燥纯净的氧气，氧气调压装置用于对氧气水分离器34排出的干燥纯净的氧气进行稳压处理，然后输送出氢纯化系统。
概括言之，氢纯化系统由氢(氧)分离器，氢(氧)综合塔，氢(氧)气水分离器，氢(氧)气调压装置等设备组成。含有氢气和氧气的电解液先经氢(氧)分离器，其中的氢(氧)气在重力作用下与电解碱液发生沉降分离，分离出的氢(氧)气在氢(氧)综合塔内得到洗涤、冷却，在氢(氧)气水分离器中分离去除液滴，经各自的调压装置稳压后送出氢纯化系统，进入各自的应用区；换言之，一方面，富含氢气的电解液先经氢分离器31，在重力作用下与电解碱液发生沉降分离，分离出的氢气在氢综合塔32内得到洗涤(使用纯水)、冷却，然后在氢气水分离器35中分离去除液滴，经氢气调压装置稳压后送出氢纯化系统，进入其应用区比如化工厂使用；另一方面，富含氧气的电解液先经氧分离器33，在重力作用下与电解碱液发生沉降分离，分离出的氧气在氧综合塔34内得到洗涤(使用纯水)、冷却，然后在氧气水分离器36中分离去除液滴，经氧气调压装置稳压后送出氢纯化系统，进入其应用区比如锅炉进行燃烧。
至于氢纯化系统中各设备，包括氢分离器31、氢综合塔32、氢气水分离器35、氧分离器33、氧综合塔34、氧气水分离器36，进行气液分离得到的液相可以回收利用；比如，首先，氢分离器31和氧分离器33的液相出口都与碱液循环系统连接，如此可以回收绝大部分电解碱液。优选地，氢综合塔32、氧综合塔34都与碱液循环系统连接，如此，氢综合塔32和氧综合塔34的洗涤水都可以进入碱液循环系统循环使用。优选地，氢气水分离器35、氧气水分离器36可与碱液循环系统连接，氢气水分离器35和氧气水分离器36分离的纯水可以进入碱液循环系统循环使用；或者，氢气水分离器35、氧气水分离器36也可以与补水系统连接，氢气水分离器35和氧气水分离器36 分离的纯水以进入补水系统循环使用。
上述电解水制氢耦合锅炉富氧燃烧系统的示例性实施例中，锅炉富氧燃烧系统主要包括氧气减压装置51、氧气二次风混合系统52、风机53、锅炉54等；其中，氧气减压装置51与电解水制氢系统的氢纯化系统连接，用于为氢纯化系统输出的氧气减压；氧气二次风混合系统52分别与风机53和氧气减压装置51连接，用于混合风机53输送而来的二次风和氧气减压装置51输出的氧气；锅炉54与氧气二次风混合系统52连接，氧气二次风混合系统52输出的氧气二次风混合物即富氧混合气体被输送至锅炉54进行燃烧。换言之，从电解水制氢系统出来的副产物——氧气经氧气减压装置51减压后被送往氧气二次风混合系统52与二次风混合形成富氧混合气体，然后被送往锅炉54进行燃烧。
上述电解水制氢耦合锅炉富氧燃烧系统使用时，启动电解槽20，开始电解水，由电解槽20出来的电解液有两路：一路富含氢气，另一路富含氧气，分别进入置于氢纯化系统内的氢分离器31和氧分离器33中，在重力作用下气体与电解碱液发生沉降分离，分离出来的氢气和氧气分别进入氢气综合塔32和氧气综合塔34进行洗涤、冷却，然后分别进入氢气水分离器35和氧气水分离器36中分离去除液滴后分别得到氢气和氧气，经各自的调压装置稳压后送出氢纯化系统；其中，氢气送往石油化工厂参与石油化工的生产，而氧气送往锅炉系统：首先通过氧气减压装置51进入氧气二次风混合系统52与二次风混合形成富氧混合气体，送往炉膛内，实现锅炉内的富氧燃烧。氧气流量的大小通过管路上的流量调节阀来控制，二次风由二次风机53提供。
上述电解水制氢耦合锅炉富氧燃烧系统中用于氢(氧)综合塔及氢(氧)气水分离器等设备进行洗涤、冷却、分离的纯水来自补水系统。新鲜自来水首先进入补水系统内，经其中的纯水装置11处理后进入原料水箱12，由补水泵13送进氢纯化系统内，在系统内纯水流经氢(氧)综合塔32,34、氢(氧)气水分离器35,36等设备，对氢气和氧气进行洗涤、冷却、分离，得到纯净干燥的氢气及氧气，而得到的洗涤液和纯水最后与分离出来的两路电解碱液汇合，由碱液循环泵41经液碱冷却器42冷却过滤，再次进入电解槽42内。
以上所述仅为本发明的优选实施例，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则 之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种电解水制氢耦合锅炉富氧燃烧系统，其特征在于，包括：电解水制氢系统及锅炉富氧燃烧系统；其中，
    所述电解水制氢系统用于电解水制备氢气和氧气；
    所述锅炉富氧燃烧系统与所述电解水制氢系统的氧气输出端连接，利用所述电解水制氢系统生产的氧气实现锅炉的富氧燃烧。
  2. 如权利要求1所述的电解水制氢耦合锅炉富氧燃烧系统，其特征在于，所述电解水制氢系统包括：补水系统、碱液循环系统、电解槽、氢纯化系统；其中，
    所述补水系统用于向所述氢纯化系统补充纯水；
    所述碱液循环系统，分别与所述电解槽的电解液输入端、所述氢纯化系统的液相输出端连接，用于从所述氢纯化系统回收电解碱液，并向所述电解槽提供电解碱液；
    所述电解槽，与所述碱液循环系统的输出端连接，用于接收电解碱液并且在直流电的作用下纯水发生电解反应生成氢气和氧气；
    所述氢纯化系统，分别与所述电解槽的输出端、所述补水系统的输出端和所述碱液循环系统的输入端连接，用于接收所述电解槽流出的富含氢气的电解碱液和富含氧气的电解碱液，并分别分离纯化氢气、氧气。
  3. 如权利要求2所述的电解水制氢耦合锅炉富氧燃烧系统，其特征在于，所述补水系统包括纯水装置、原料水箱、补水泵，其中，所述纯水装置用于对水源进行纯化处理得到纯水；所述原料水箱与所述纯水装置连接，用于储存纯水；所述补水泵用于从所述原料水箱抽取纯水输送至目标设备。
  4. 如权利要求2或3所述的电解水制氢耦合锅炉富氧燃烧系统，其特征在于，所述碱液循环系统包括碱液循环泵、碱液冷却器以及碱液循环管道；其中，所述碱液循环管道分别连接所述氢纯化系统的液相输出端和所述电解槽的输入端，所述碱液循环泵设置于所述碱液循环管道上用于提供碱液循环 的动力，所述碱液冷却器设置于所述碱液循环管道上，用于对所述碱液进行冷却过滤处理。
  5. 如权利要求2-4中任一项所述的电解水制氢耦合锅炉富氧燃烧系统，其特征在于，所述电解槽的输出端包括富含氢气电解液输出端和富含氧气电解液输出端，分别用于输出富含氢气的电解液和富含氧气的电解液；优选地，所述电解槽的输入端还与所述补水系统连接。
  6. 如权利要求2-5中任一项所述的电解水制氢耦合锅炉富氧燃烧系统，其特征在于，
    所述氢纯化系统包括氢气纯化子系统和氧气纯化子系统；
    所述氢气纯化子系统包括依次连接的氢分离器、氢综合塔、氢气水分离器、氢气调压装置；其中，所述氢气分离器用于从所述电解槽流出的富含氢气电解液中分离电解液和氢气；所述氢综合塔用于洗涤、冷却所述氢分离器中分离出的氢气；所述氢气水分离器用于对所述氢综合塔排出的氢气进行气液分离；所述氢气调压装置用于对所述氢气水分离器排出的干燥纯净的氢气进行稳压处理，然后输送出所述氢纯化系统；
    所述氧气纯化子系统包括依次连接的氧分离器、氧综合塔、氧气水分离器、氧气调压装置；其中，所述氧气分离器用于从所述电解槽流出的富含氧气电解液中分离电解液和氧气；所述氧综合塔用于洗涤、冷却所述氧分离器中分离出的氧气；所述氧气水分离器用于对所述氧综合塔排出的氧气进行气液分离，所述氧气调压装置用于对所述氧气水分离器排出的干燥纯净的氧气进行稳压处理，然后输送出所述氢纯化系统；
    所述氢分离器和所述氧分离器的液相出口都与所述碱液循环系统连接。
  7. 如权利要求6所述的电解水制氢耦合锅炉富氧燃烧系统，其特征在于，所述氢综合塔、所述氧综合塔都与所述碱液循环系统连接。
  8. 如权利要求7所述的电解水制氢耦合锅炉富氧燃烧系统，其特征在于，所述氢气水分离器、所述氧气水分离器与碱液循环系统连接；
    或者，所述氢气水分离器、所述氧气水分离器与所述补水系统连接，氢气水分离器和氧气水分离器分离的纯水以进入补水系统循环使用。
  9. 如权利要求2-5中任一项所述的电解水制氢耦合锅炉富氧燃烧系统，其特征在于，
    所述锅炉富氧燃烧系统包括：氧气减压装置、氧气二次风混合系统、风机、锅炉；
    其中，所述氧气减压装置与电解水制氢系统的氢纯化系统连接，用于为所述氢纯化系统输出的氧气减压；所述氧气二次风混合系统分别与所述风机和所述氧气减压装置连接，用于混合从所述风机输送而来的二次风和所述氧气减压装置输出的氧气；所述锅炉与所述氧气二次风混合系统连接，所述氧气二次风混合系统输出的富氧混合气体被输送至所述锅炉进行燃烧。
  10. 如权利要求9所述的电解水制氢耦合锅炉富氧燃烧系统，其特征在于，所述锅炉富氧燃烧系统中管路上还设有流量调节阀，用于调控氧气流量的大小。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113405116A (zh) * 2021-06-29 2021-09-17 西安热工研究院有限公司 一种掺烧氨气减少碳排放的系统及控制方法
CN114151785A (zh) * 2021-12-03 2022-03-08 上海源晗能源技术有限公司 燃煤锅炉碳基富氧燃烧及co2捕集与利用工艺

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111336571A (zh) * 2020-04-07 2020-06-26 中国华能集团清洁能源技术研究院有限公司 一种电解水制氢余热利用系统及其工作方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994024489A1 (en) * 1993-04-13 1994-10-27 Gas Research Institute Reduction of nitrogen oxides in oxygen-enriched combustion
CN101956634A (zh) * 2010-09-10 2011-01-26 北京工业大学 一种车载氢/氧气制取、储存、供给装置及其控制方法
CN203049045U (zh) * 2012-10-30 2013-07-10 陕西启源科技发展有限责任公司 电解水制氢系统
CN204589321U (zh) * 2015-03-27 2015-08-26 淄博安泽特种气体有限公司 利用水电解制备纯氢及氧回收系统
CN107017633A (zh) * 2017-04-11 2017-08-04 赫普热力发展有限公司 一种电解制氢与水力发电站结合的系统
CN206861578U (zh) * 2017-04-17 2018-01-09 上海碳誉节能环保科技有限公司 一种锅炉富氧燃烧系统
CN207819464U (zh) * 2017-12-28 2018-09-04 赫普科技发展（北京）有限公司 一种锅炉富氧燃烧结合电解制氢调峰调频设备的系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205710939U (zh) * 2016-06-28 2016-11-23 青岛中德伊凯新能源科技有限公司 一种水电解氢氧分离发生器
CN108183495A (zh) * 2017-12-28 2018-06-19 赫普科技发展（北京）有限公司 一种锅炉富氧燃烧结合电解制氢调峰调频设备的系统
CN209840152U (zh) * 2019-09-24 2019-12-24 国电龙源电力技术工程有限责任公司 一种电解水制氢耦合锅炉富氧燃烧系统

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994024489A1 (en) * 1993-04-13 1994-10-27 Gas Research Institute Reduction of nitrogen oxides in oxygen-enriched combustion
CN101956634A (zh) * 2010-09-10 2011-01-26 北京工业大学 一种车载氢/氧气制取、储存、供给装置及其控制方法
CN203049045U (zh) * 2012-10-30 2013-07-10 陕西启源科技发展有限责任公司 电解水制氢系统
CN204589321U (zh) * 2015-03-27 2015-08-26 淄博安泽特种气体有限公司 利用水电解制备纯氢及氧回收系统
CN107017633A (zh) * 2017-04-11 2017-08-04 赫普热力发展有限公司 一种电解制氢与水力发电站结合的系统
CN206861578U (zh) * 2017-04-17 2018-01-09 上海碳誉节能环保科技有限公司 一种锅炉富氧燃烧系统
CN207819464U (zh) * 2017-12-28 2018-09-04 赫普科技发展（北京）有限公司 一种锅炉富氧燃烧结合电解制氢调峰调频设备的系统

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113405116A (zh) * 2021-06-29 2021-09-17 西安热工研究院有限公司 一种掺烧氨气减少碳排放的系统及控制方法
CN114151785A (zh) * 2021-12-03 2022-03-08 上海源晗能源技术有限公司 燃煤锅炉碳基富氧燃烧及co2捕集与利用工艺
CN114151785B (zh) * 2021-12-03 2024-04-05 上海源晗能源技术有限公司 燃煤锅炉碳基富氧燃烧及co2捕集与利用工艺

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