CN110513711A - A kind of water electrolysis hydrogen production coupling boiler oxygen-enriched combustion system - Google Patents
A kind of water electrolysis hydrogen production coupling boiler oxygen-enriched combustion system Download PDFInfo
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- CN110513711A CN110513711A CN201910906136.1A CN201910906136A CN110513711A CN 110513711 A CN110513711 A CN 110513711A CN 201910906136 A CN201910906136 A CN 201910906136A CN 110513711 A CN110513711 A CN 110513711A
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 259
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 259
- 239000001301 oxygen Substances 0.000 title claims abstract description 254
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 254
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 252
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 217
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 175
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 82
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 77
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 47
- 230000008878 coupling Effects 0.000 title abstract description 13
- 238000010168 coupling process Methods 0.000 title abstract description 13
- 238000005859 coupling reaction Methods 0.000 title abstract description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 132
- 238000000746 purification Methods 0.000 claims description 58
- 150000002431 hydrogen Chemical class 0.000 claims description 52
- 239000003513 alkali Substances 0.000 claims description 43
- 239000003792 electrolyte Substances 0.000 claims description 29
- 238000000926 separation method Methods 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 19
- 239000002994 raw material Substances 0.000 claims description 12
- 239000007791 liquid phase Substances 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 4
- 230000006837 decompression Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 230000036647 reaction Effects 0.000 claims description 4
- 239000013589 supplement Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 239000006227 byproduct Substances 0.000 abstract description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003546 flue gas Substances 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 17
- 230000005611 electricity Effects 0.000 description 9
- 238000001035 drying Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 239000007792 gaseous phase Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 235000019197 fats Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 235000013310 margarine Nutrition 0.000 description 1
- 239000003264 margarine Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- -1 that is Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The present invention provides a kind of water electrolysis hydrogen production coupling boiler oxygen-enriched combustion system, comprising: water electrolysis hydrogen production system and boiler oxygen-enriched combustion system；Wherein, the water electrolysis hydrogen production system prepares hydrogen and oxygen for electrolysis water；The boiler oxygen-enriched combustion system is connect with the oxygen output of the water electrolysis hydrogen production system, and the oxygen-enriched combusting of boiler is realized using the oxygen of water electrolysis hydrogen production system production.The present invention is by electrolysis water hydrogen making, and environmentally protective, production method is flexible, and the hydrogen purity produced is high, yield is big, can provide safeguard for petrochemical industry production；Oxygen is sent into the oxygen-enriched combusting that coal-burning boiler realizes boiler by the by-product oxygen that can make full use of high value simultaneously；The cost of water electrolysis hydrogen production system can not only be greatly reduced on the whole, for Power Plant Side, also have and save the energy, improve boiler internal combustion intensity, reduce flue gas loss, improve the excellent effect of boiler efficiency.
Description
Technical field
The present invention relates to a kind of water electrolysis hydrogen production systems, and it is oxygen-enriched to be more precisely related to a kind of water electrolysis hydrogen production coupling boiler
Combustion system.
Background technique
Hydrogen is the main raw material of industry and most important industrial gasses and special gas.In petrochemical industry production, use
It in the various technical process of petroleum refining and petrochemical industry, such as is hydrocracked, hydrofinishing, hydrodesulfurization, in basic industries
It is the raw material for synthesizing ammonia, Organic fluoride Chemical Manufacture in production；The production of many chemicals will consume hydrogen, such as hydrogen and chlorine
Synthesising hydrogen (its aqueous solution is hydrochloric acid), hydrogen and the effect of certain organic matters generate alcohol, aldehyde, acetic acid, amine etc.；In daily fining
In work production, for being hydrogenated to the fat in the products such as margarine, edible oil, household cleaning agent.
With the rapid growth of national economy, the continuous improvement of human life quality, demand of the social every profession and trade to hydrogen
It will increase increasingly, purposes is very extensive.Hydrogen made from a manner of water electrolysis is free of the impurity such as CO, sulphur, hydrocarbon, green ring
It protects, while having the characteristics that flexible production, (usually 99.7% or more) with high purity and by-product high value oxygen.But its unit
Energy consumption is about in 4-5 kilowatt hour/cube hydrogen, and produce cost is influenced very big by electricity price, and electricity price accounts for 70% of totle drilling cost or more.Mesh
Preceding country and local appearance policy support electrolysis water using renewable energy cheap and abundant either highest electricity price restriction etc.
Hydrogen manufacturing.Each large enterprises and scientific research institutions, which are also studied from material, design technology etc., reduces hydrogen manufacturing cost with it.Every work
The emphasis of work has all been placed on hydrogen and has produced itself, does not still find more suitable benefit at present for high value by-product oxygen
Use occasion.According to investigation, current most of hydrogen manufacturing project oxygen are directly discharged into atmosphere, virtually cause a large amount of resource
Waste.
Summary of the invention
Based on the problems of prior art, the present invention provides a kind of water electrolysis hydrogen productions to couple boiler oxygen-enriched combusting system
System, while a large amount of hydrogen makings, makes full use of the by-product oxygen of high value, so that reaching reduces cost, realizes economical
The purpose of benefit.
To achieve the goals above, one aspect of the present invention provides the following technical solutions:
A kind of water electrolysis hydrogen production coupling boiler oxygen-enriched combustion system, comprising: water electrolysis hydrogen production system and boiler oxygen-enriched combusting
System；Wherein, the water electrolysis hydrogen production system prepares hydrogen and oxygen for electrolysis water；The boiler oxygen-enriched combustion system and institute
The oxygen output connection for stating water electrolysis hydrogen production system, the richness of boiler is realized using the oxygen of water electrolysis hydrogen production system production
Oxygen burning.
Above-mentioned water electrolysis hydrogen production couples boiler oxygen-enriched combustion system, as a preferred implementation manner, the electrolysis water system
Hydrogen system includes: water charging system, alkali liquor circulating system, electrolytic cell, hydrogen purification system；Wherein, the water charging system is used for institute
State hydrogen purification system supplement pure water；The alkali liquor circulating system is pure with the electrolyte input terminal of the electrolytic cell, the hydrogen respectively
The liquid phase output of change system connects, and for recycling electrolytic lye from the hydrogen purification system, and provides electricity to the electrolytic cell
Solve lye；The electrolytic cell is connect with the output end of the alkali liquor circulating system, for receiving electrolytic lye and in direct current
Under the action of pure water cell reaction occur generate hydrogen and oxygen；The hydrogen purification system, respectively with the output of the electrolytic cell
End, the water charging system output end connect with the input terminal of the alkali liquor circulating system, flowed out for receiving the electrolytic cell
The electrolytic lye rich in hydrogen and the electrolytic lye rich in oxygen, and isolate and purify hydrogen, oxygen respectively.
Above-mentioned water electrolysis hydrogen production couples boiler oxygen-enriched combustion system, as a preferred implementation manner, the water charging system
Including pure water device, raw material water tank, small pump, wherein the pure water device is used to carry out purification process to water source to obtain pure water；
The raw material water tank is connect with the pure water device, for storing pure water；The small pump is used for from the raw material water tank extracting
Pure water is delivered to target device.
Above-mentioned water electrolysis hydrogen production couples boiler oxygen-enriched combustion system, as a preferred implementation manner, the lye circulation
System includes NaOH solution circulating pump, alkali solution cooler and lye circulating line；Wherein, the lye circulating line is separately connected institute
The liquid phase output of hydrogen purification system and the input terminal of the electrolytic cell are stated, the NaOH solution circulating pump is set to the lye circulation
For providing the power of lye circulation on pipeline, the alkali solution cooler is set on the lye circulating line, for institute
It states lye and carries out cold filtration processing.
Above-mentioned water electrolysis hydrogen production couples boiler oxygen-enriched combustion system, as a preferred implementation manner, the electrolytic cell
Output end includes rich in hydrogen gas electrolysis liquid output end and being rich in oxygen electrolyte output end, is respectively used to the electricity that output is rich in hydrogen
Solve liquid and the electrolyte rich in oxygen；Preferably, the input terminal of the electrolytic cell is also connect with the water charging system.
Above-mentioned water electrolysis hydrogen production couples boiler oxygen-enriched combustion system, as a preferred implementation manner, hydrogen purifying system
System includes hydrogen purification subsystem and oxygen purification subsystem；
The hydrogen purification subsystem includes sequentially connected hydrogen separator, hydrogen comprehensive tower, hydrogen separator, hydrogen tune
Pressure device；Wherein, the hydrogen gas segregator be used for from the electrolytic cell flow out rich in free electrolyte in hydrogen gas electrolysis liquid with
Hydrogen；The hydrogen comprehensive tower is for washing, cooling down the hydrogen isolated in the hydrogen separator；The hydrogen separator is used for
Gas-liquid separation is carried out to the hydrogen of hydrogen comprehensive tower discharge；The hydrogen regulator is used to arrange the hydrogen separator
The pure hydrogen of drying out carries out steady pressure treatment, then transfers out the hydrogen purification system；
The oxygen purification subsystem includes sequentially connected oxygen separator, oxygen comprehensive tower, oxygen separator, oxygen tune
Pressure device；Wherein, the oxygen separator be used for from the electrolytic cell flow out rich in free electrolyte in oxygen electrolyte with
Oxygen；The oxygen comprehensive tower is for washing, cooling down the oxygen isolated in the oxygen separator；The oxygen separator is used for
Gas-liquid separation is carried out to the oxygen of oxygen comprehensive tower discharge, the oxygen regulator is used to arrange the oxygen separator
The pure oxygen of drying out carries out steady pressure treatment, then transfers out the hydrogen purification system；
The liquid-phase outlet of the hydrogen separator and the oxygen separator is all connect with the alkali liquor circulating system.
Above-mentioned water electrolysis hydrogen production couples boiler oxygen-enriched combustion system, as a preferred implementation manner, the hydrogen comprehensive tower,
The oxygen comprehensive tower is all connect with the alkali liquor circulating system.
Above-mentioned water electrolysis hydrogen production couples boiler oxygen-enriched combustion system, as a preferred implementation manner, the hydrogen moisture
It is connect from device, the oxygen separator with alkali liquor circulating system；Alternatively, the hydrogen separator, the oxygen gas-water separation
Device is connect with the water charging system, and the pure water of hydrogen separator and the separation of oxygen separator is made with entering water charging system circulation
With.
Above-mentioned water electrolysis hydrogen production couples boiler oxygen-enriched combustion system, and the boiler is oxygen-enriched as a preferred implementation manner,
Combustion system includes: oxygen decompressor, oxygen Secondary Air hybrid system, blower, boiler；Wherein, the oxygen decompressor
It is connect with the hydrogen purification system of water electrolysis hydrogen production system, the oxygen decompression for being exported for the hydrogen purification system；The oxygen
Secondary Air hybrid system is connect with the blower and the oxygen decompressor respectively, is conveyed for mixing from the blower
Secondary Air and the oxygen decompressor output oxygen；The boiler is connect with the oxygen Secondary Air hybrid system, institute
The oxygen-rich mixture body for stating the output of oxygen Secondary Air hybrid system is transported to the boiler and burns.
Above-mentioned water electrolysis hydrogen production couples boiler oxygen-enriched combustion system, and the boiler is oxygen-enriched as a preferred implementation manner,
Flow control valve is additionally provided in combustion system on pipeline, for regulating and controlling the size of oxygen flow.
Compared with the immediate prior art, technical solution provided by the invention is had the following beneficial effects:
1) present invention is by electrolysis water hydrogen making, and environmentally protective, production method is flexible, and the hydrogen purity produced is high, produces
Amount is big, can provide safeguard for petrochemical industry production.
2) maximum excellent effect of the invention simultaneously is the by-product oxygen for making full use of high value, oxygen is sent into coal-fired
The oxygen-enriched combusting of boiler realization boiler；The cost of water electrolysis hydrogen production system can not only be greatly reduced on the whole, simultaneously for power plant
For side, also have and save the energy, improve boiler internal combustion intensity, reduces flue gas loss, improve the excellent effect of boiler efficiency
Fruit.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.
Fig. 1 is that a kind of water electrolysis hydrogen production that the preferred embodiment of the present invention provides couples boiler oxygen-enriched combustion system schematic diagram；
In figure: 11, pure water device；12, raw material water tank；13, small pump；20, electrolytic cell；31, hydrogen separator；32, hydrogen is comprehensive
Close tower；33, oxygen separator；34, oxygen comprehensive tower；35- hydrogen separator；36- oxygen separator；41, NaOH solution circulating pump；
42, alkali solution cooler；51, oxygen decompressor；52, oxygen Secondary Air hybrid system；53, blower；54, boiler.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that in the feelings not conflicted
Under condition, the features in the embodiments and the embodiments of the present application be can be combined with each other.
In the description of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the present invention rather than require the present invention that must be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.Term used in the present invention " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected,
It may be a detachable connection；It can be directly connected, can also be indirectly connected by intermediate member, for the common of this field
For technical staff, the concrete meaning of above-mentioned term can be understood as the case may be.
Specific embodiment according to the present invention, as shown in Figure 1, the present invention provides a kind of water electrolysis hydrogen production coupling boiler richness
Oxygen combustion system, the system include water electrolysis hydrogen production system and boiler oxygen-enriched combustion system；Wherein, water electrolysis hydrogen production system is used for
Electrolysis water prepares hydrogen and oxygen；Boiler oxygen-enriched combustion system is connect with the oxygen output of water electrolysis hydrogen production system, for benefit
The oxygen-enriched combusting of boiler is realized with the oxygen that water electrolysis hydrogen production system produces.
In the exemplary embodiment of above-mentioned water electrolysis hydrogen production coupling boiler oxygen-enriched combustion system, water electrolysis hydrogen production system includes
Water charging system, alkali liquor circulating system, electrolytic cell 20, hydrogen purification system；Wherein,
Water charging system supplements pure water for Pure-water Making and to water electrolysis hydrogen production system；
Alkali liquor circulating system is connect with the liquid phase output of the electrolyte input terminal of electrolytic cell 20, hydrogen purification system respectively,
For recycling electrolytic lye from hydrogen purification system, and electrolytic lye is provided to electrolytic cell；In other words, alkali liquor circulating system be used for
Electrolytic cell provides the lye as electrolyte, while recycling lye from hydrogen purification system to reuse；
Electrolytic cell 20, be electrolyzing pure water hydrogen making and oxygen main place, respectively with the output of alkali liquor circulating system
The output end connection at end, water charging system, for receiving electrolytic lye and pure water and pure water generation electricity under the action of direct current
Solution reaction generates hydrogen and oxygen；
Hydrogen purification system, it is defeated with the output end of electrolytic cell 20, the output end of water charging system and alkali liquor circulating system respectively
Enter end connection, for receiving the electrolytic lye rich in hydrogen of the outflow of electrolytic cell 20 and rich in the electrolytic lye of oxygen, and distinguishes
Isolate and purify hydrogen, oxygen；The electrolytic lye isolated is delivered to alkali liquor circulating system simultaneously.
In the exemplary embodiment of above-mentioned water electrolysis hydrogen production coupling boiler oxygen-enriched combustion system, water charging system includes pure water dress
Set 11, raw material water tank 12, small pump 13, wherein pure water device 11 is used to carry out purification process to water source (such as tap water) to obtain
To pure water (specially deionized water)；Raw material water tank 12 is connect with pure water device 11, for storing pure water；Small pump 13 be used for from
Raw material water tank 12 extracts pure water and is delivered to target device.In use, fresh tap water initially enters in water charging system, through therein
Enter raw water case 12 after the processing of pure water device 11, then supplies water from small pump 13 to the other equipment of water electrolysis hydrogen production system, packet
It including and supplies water to hydrogen purification system, pure water flows through the equipment such as hydrogen (oxygen) comprehensive tower, hydrogen (oxygen) moisture trap in hydrogen purification system,
To the wet hydrogen isolated from the electrolytic lye rich in hydrogen and the electrolytic lye rich in oxygen that electrolytic cell flows out and
Oxygen is washed, is cooled down, and the water after the washing of discharge can enter alkali liquor circulating system, realizes gas through hydrogen (oxygen) moisture trap
Dry pure hydrogen and oxygen are respectively obtained after water separation, the water isolated enters together with the lye that hydrogen purification system is discharged
Alkali liquor circulating system, to realize to system water supplement.Preferably, water charging system can also be connect with electrolytic cell 20, to electrolytic cell 20
It supplies water.
In the exemplary embodiment of above-mentioned water electrolysis hydrogen production coupling boiler oxygen-enriched combustion system, alkali liquor circulating system includes alkali
Liquid circulating pump 41, alkali solution cooler 42 and lye circulating line, wherein lye circulating line is separately connected hydrogen purification system
The input terminal of liquid phase output and electrolytic cell 20, NaOH solution circulating pump 41 are set on lye circulating line for providing lye circulation
Power, alkali solution cooler 42 is set on lye circulating line, for carrying out cold filtration processing to lye.Specifically, by
The electrolyte of the output end outflow of electrolytic cell 20 enters in hydrogen purification system, after therefrom isolating hydrogen and oxygen, electrolytic lye
Enter lye circulating line with pure water, pumped out by NaOH solution circulating pump 41, after 42 cold filtration of alkali solution cooler, is again introduced into electricity
It solves and participates in cell reaction in slot 20, to realize lye circulation in water electrolysis hydrogen production system.In the system of the present invention, it is electrolysed
The alkali concentration of electrolytic lye can be adjusted according to the actual situation in slot, when the concentration of lye returned through alkali liquor circulating system is relatively low
When, it is possible to reduce water charging system is to the rate of water make-up of electrolytic cell, to maintain the alkali concentration of electrolytic cell Inner electrolysis lye in required condition
Under.
Electrolytic cell 20 is the place that pure water occurs that cell reaction generates hydrogen and oxygen, the input terminal and lye of electrolytic cell 20
Circulatory system connection, output end are connect with hydrogen purification system；The liquid phase (containing pure water) for coming from alkali liquor circulating system enters electrolysis
Slot, pure water start to decompose under the action of direct current, generate hydrogen and oxygen respectively on the cathode-anode plate of electrolytic chamber；These
From electrolytic cell both ends, outflow enters hydrogen purification system respectively with electrolyte for hydrogen and oxygen, specifically, by the output of electrolytic cell 20
The electrolyte of end outflow has two-way: being all the way the electrolyte rich in hydrogen, another way is rich in the electrolyte of oxygen, respectively by being rich in
Hydrogen gas electrolysis liquid output end and rich in oxygen electrolyte output end export, into 31 He of hydrogen separator being placed in hydrogen purification system
In oxygen separator 33, after respectively being isolated by hydrogen and oxygen, the electrolytic lye of two-way converges, and is delivered to alkali liquor circulating system recycling
It utilizes.Preferably, the input terminal of electrolytic cell 20 is also connect with water charging system, and the pure water for coming from water charging system is conveyed when needed
To electrolytic cell 20.
In the exemplary embodiment of above-mentioned water electrolysis hydrogen production coupling boiler oxygen-enriched combustion system, hydrogen purification system includes hydrogen
Purify subsystem and oxygen purification subsystem.Hydrogen purification subsystem include sequentially connected hydrogen separator 31, hydrogen comprehensive tower 32,
Hydrogen separator 35, hydrogen regulator；Wherein, the entrance of hydrogen gas segregator 31 is with electrolytic cell 20 rich in hydrogen gas electrolysis liquid
Output end connection, for being rich in free electrolyte and hydrogen in hydrogen gas electrolysis liquid from what electrolytic cell 20 flowed out；Hydrogen comprehensive tower 32
Entrance is connect with the gaseous phase outlet of hydrogen gas segregator 31, for washing, cooling down the hydrogen isolated in hydrogen separator 31；Hydrogen water
The entrance of separator 35 is connect with the gaseous phase outlet of hydrogen comprehensive tower 32, and the hydrogen for hydrogen comprehensive tower to be discharged carries out gas-liquid point
From obtaining drying pure hydrogen；The pure hydrogen of the drying that hydrogen regulator is used to that hydrogen separator 35 to be discharged into
Then row steady pressure treatment transfers out hydrogen purification system.
Oxygen purification subsystem includes sequentially connected oxygen separator 33, oxygen comprehensive tower 34, oxygen separator 36, oxygen
Regulator；Wherein, the entrance of oxygen separator 33 is connect with the oxygen electrolyte output end that is rich in of electrolytic cell 20, is used for from electricity
Solve the outflow of slot 20 is rich in free electrolyte and oxygen in oxygen electrolyte；The entrance of oxygen comprehensive tower 34 and oxygen separator 33
Gaseous phase outlet connection, for washing, cooling down the oxygen isolated in oxygen separator 33；The entrance of oxygen separator 36 and oxygen are comprehensive
The gaseous phase outlet connection of tower 34 is closed, the oxygen for oxygen comprehensive tower 34 to be discharged carries out gas-liquid separation, obtains drying pure oxygen
Gas, the pure oxygen of the drying that oxygen regulator is used to that oxygen separator 34 to be discharged carry out steady pressure treatment, then convey
Hydrogen purification system out.
Summarize speech, hydrogen purification system is by hydrogen (oxygen) separator, hydrogen (oxygen) comprehensive tower, hydrogen (oxygen) moisture trap, hydrogen
The equipment such as (oxygen) controlled atmosphere pressure device composition.Electrolyte containing hydrogen and oxygen is first through hydrogen (oxygen) separator, hydrogen (oxygen) therein
With electrolytic lye sedimentation separation occurs for gas under the effect of gravity, and the hydrogen isolated (oxygen) gas is washed in hydrogen (oxygen) comprehensive tower
It washs, cool down, the separation removal drop in hydrogen (oxygen) moisture trap sends out hydrogen purifying system after respective regulator pressure stabilizing
System, into respective application area；In other words, on the one hand, the electrolyte rich in hydrogen is first through hydrogen separator 31, under the effect of gravity
Sedimentation separation occurs with electrolytic lye, the hydrogen isolated is washed in hydrogen comprehensive tower 32 and (uses pure water), is cooling, then
Separation removal drop, sends out hydrogen purification system after hydrogen regulator pressure stabilizing in hydrogen separator 35, into its application
Area such as chemical plant uses；On the other hand, the electrolyte rich in oxygen is first through oxygen separator 33, under the effect of gravity with electrolytic alkali
Sedimentation separation occurs for liquid, and the oxygen isolated is washed in oxygen comprehensive tower 34 and (uses pure water), is cooling, then in oxygen water
Separation removal drop, sends out hydrogen purification system, into its application area such as pot after oxygen regulator pressure stabilizing in separator 36
Furnace burns.
As for each equipment in hydrogen purification system, including hydrogen separator 31, hydrogen comprehensive tower 32, hydrogen separator 35, oxygen
From device 33, oxygen comprehensive tower 34, oxygen separator 36, carrying out the liquid phase that gas-liquid separation obtains can be recycled；For example, first
First, the liquid-phase outlet of hydrogen separator 31 and oxygen separator 33 is all connect with alkali liquor circulating system, can so recycle the overwhelming majority
Electrolytic lye.Preferably, hydrogen comprehensive tower 32, oxygen comprehensive tower 34 are all connect with alkali liquor circulating system, in this way, hydrogen comprehensive tower 32 and oxygen
The washing water of comprehensive tower 34 can enter alkali liquor circulating system and be recycled.Preferably, hydrogen separator 35, oxygen moisture
It can be connect with alkali liquor circulating system from device 36, hydrogen separator 35 and the isolated pure water of oxygen separator 36 can enter alkali
Fluid circulation is recycled；Alternatively, hydrogen separator 35, oxygen separator 36 can also be connect with water charging system, hydrogen
Moisture trap 35 and the isolated pure water of oxygen separator 36 are recycled with entering water charging system.
In the exemplary embodiment of above-mentioned water electrolysis hydrogen production coupling boiler oxygen-enriched combustion system, boiler oxygen-enriched combustion system master
It to include oxygen decompressor 51, oxygen Secondary Air hybrid system 52, blower 53, boiler 54 etc.；Wherein, oxygen decompressor 51
It is connect with the hydrogen purification system of water electrolysis hydrogen production system, the oxygen decompression for being exported for hydrogen purification system；Oxygen Secondary Air is mixed
Collaboration system 52 is connect with blower 53 and oxygen decompressor 51 respectively, for mixing the Secondary Air and oxygen of the conveying of blower 53
The oxygen that decompressor 51 exports；Boiler 54 is connect with oxygen Secondary Air hybrid system 52, and oxygen Secondary Air hybrid system 52 is defeated
Oxygen Secondary Air mixture, that is, oxygen-rich mixture body out is transported to boiler 54 and burns.In other words, from water electrolysis hydrogen production
The by-product that system comes out --- oxygen is sent to oxygen Secondary Air hybrid system 52 and two after the decompression of oxygen decompressor 51
Secondary wind is mixed to form oxygen-rich mixture body, is then sent to boiler 54 and burns.
Above-mentioned water electrolysis hydrogen production coupling boiler oxygen-enriched combustion system is in use, starting electrolytic cell 20, starts electrolysis water, by electricity
The electrolyte that solution slot 20 comes out has two-way: all the way rich in hydrogen, another way is rich in oxygen, respectively enters and be placed in hydrogen purification system
Hydrogen separator 31 and oxygen separator 33 in, sedimentation separation occurs for gas and electrolytic lye under the effect of gravity, separates
Hydrogen and oxygen respectively enter hydrogen comprehensive tower 32 and oxygen complex tower 34 is washed, cooled down, and then respectively enter hydrogen water
Hydrogen and oxygen are respectively obtained after separation removal drop in separator 35 and oxygen separator 36, it is steady through respective regulator
Hydrogen purification system is sent out after pressure；Wherein, hydrogen is sent to the production that petrochemical plant participates in petrochemical industry, and oxygen is sent to boiler system
System: oxygen Secondary Air hybrid system 52 is entered by oxygen decompressor 51 first and Secondary Air is mixed to form oxygen-rich mixture
Body is sent in burner hearth, realizes the oxygen-enriched combusting in boiler.The size of oxygen flow is controlled by the flow control valve on pipeline
System, Secondary Air are provided by secondary air fan 53.
Hydrogen (oxygen) comprehensive tower and hydrogen (oxygen) gas-water separation are used in above-mentioned water electrolysis hydrogen production coupling boiler oxygen-enriched combustion system
The pure water that the equipment such as device are washed, cooled down, separated comes from water charging system.Fresh tap water initially enters in water charging system, warp
Pure water device 11 therein enters raw water case 12 after handling, and is sent into hydrogen purification system by small pump 13, the pure water in system
The equipment such as hydrogen (oxygen) comprehensive tower 32,34, hydrogen (oxygen) moisture trap 35,36 are flowed through, hydrogen and oxygen are washed, cooled down,
Separation, obtains the hydrogen and oxygen of clean dry, and obtained cleaning solution and pure water finally with the two-way electrolytic alkali separated
Liquid converges, and by NaOH solution circulating pump 41 through 42 cold filtration of liquid alkaline cooler, is again introduced into electrolytic cell 42.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of water electrolysis hydrogen production couples boiler oxygen-enriched combustion system characterized by comprising water electrolysis hydrogen production system and boiler
Oxygen-enriched combustion system；Wherein,
The water electrolysis hydrogen production system prepares hydrogen and oxygen for electrolysis water；
The boiler oxygen-enriched combustion system is connect with the oxygen output of the water electrolysis hydrogen production system, utilizes the electrolysis water system
The oxygen of hydrogen system production realizes the oxygen-enriched combusting of boiler.
2. water electrolysis hydrogen production as described in claim 1 couples boiler oxygen-enriched combustion system, which is characterized in that the electrolysis water system
Hydrogen system includes: water charging system, alkali liquor circulating system, electrolytic cell, hydrogen purification system；Wherein,
The water charging system is used to supplement pure water to the hydrogen purification system；
The alkali liquor circulating system is exported with the liquid phase of the electrolyte input terminal of the electrolytic cell, the hydrogen purification system respectively
End connection for recycling electrolytic lye from the hydrogen purification system, and provides electrolytic lye to the electrolytic cell；
The electrolytic cell is connect with the output end of the alkali liquor circulating system, for receiving electrolytic lye and in direct current
It acts on lower pure water and cell reaction generation hydrogen and oxygen occurs；
The hydrogen purification system is followed with the output end of the electrolytic cell, the output end of the water charging system and the lye respectively
The input terminal of loop system connects, for receiving the electrolytic lye rich in hydrogen of the electrolytic cell outflow and rich in the electrolysis of oxygen
Lye, and hydrogen, oxygen are isolated and purified respectively.
3. water electrolysis hydrogen production as claimed in claim 2 couples boiler oxygen-enriched combustion system, which is characterized in that the water charging system
Including pure water device, raw material water tank, small pump, wherein the pure water device is used to carry out purification process to water source to obtain pure water；
The raw material water tank is connect with the pure water device, for storing pure water；The small pump is used for from the raw material water tank extracting
Pure water is delivered to target device.
4. water electrolysis hydrogen production as claimed in claim 2 or claim 3 couples boiler oxygen-enriched combustion system, which is characterized in that the lye
The circulatory system includes NaOH solution circulating pump, alkali solution cooler and lye circulating line；Wherein, the lye circulating line connects respectively
The liquid phase output of the hydrogen purification system and the input terminal of the electrolytic cell are connect, the NaOH solution circulating pump is set to the lye
For providing the power of lye circulation on circulating line, the alkali solution cooler is set on the lye circulating line, is used for
Cold filtration processing is carried out to the lye.
5. the water electrolysis hydrogen production as described in any one of claim 2-4 couples boiler oxygen-enriched combustion system, which is characterized in that institute
The output end for stating electrolytic cell includes that it is rich to be respectively used to output rich in hydrogen gas electrolysis liquid output end and rich in oxygen electrolyte output end
The electrolyte of hydrogen and electrolyte rich in oxygen；Preferably, the input terminal of the electrolytic cell also connects with the water charging system
It connects.
6. the water electrolysis hydrogen production as described in any one of claim 2-5 couples boiler oxygen-enriched combustion system, which is characterized in that
The hydrogen purification system includes hydrogen purification subsystem and oxygen purification subsystem；
The hydrogen purification subsystem includes sequentially connected hydrogen separator, hydrogen comprehensive tower, hydrogen separator, hydrogen pressure regulation dress
It sets；Wherein, the hydrogen gas segregator is used for from the electrolytic cell is flowed out rich in free electrolyte and hydrogen in hydrogen gas electrolysis liquid；
The hydrogen comprehensive tower is for washing, cooling down the hydrogen isolated in the hydrogen separator；The hydrogen separator is used for institute
The hydrogen for stating the discharge of hydrogen comprehensive tower carries out gas-liquid separation；What the hydrogen regulator was used to that the hydrogen separator to be discharged
Dry pure hydrogen carries out steady pressure treatment, then transfers out the hydrogen purification system；
The oxygen purification subsystem includes sequentially connected oxygen separator, oxygen comprehensive tower, oxygen separator, oxygen pressure regulation dress
It sets；Wherein, the oxygen separator is used for from the electrolytic cell is flowed out rich in free electrolyte and oxygen in oxygen electrolyte；
The oxygen comprehensive tower is for washing, cooling down the oxygen isolated in the oxygen separator；The oxygen separator is used for institute
The oxygen for stating the discharge of oxygen comprehensive tower carries out gas-liquid separation, what the oxygen regulator was used to that the oxygen separator to be discharged
Dry pure oxygen carries out steady pressure treatment, then transfers out the hydrogen purification system；
The liquid-phase outlet of the hydrogen separator and the oxygen separator is all connect with the alkali liquor circulating system.
7. water electrolysis hydrogen production as claimed in claim 6 couples boiler oxygen-enriched combustion system, which is characterized in that the hydrogen is comprehensive
Tower, the oxygen comprehensive tower are all connect with the alkali liquor circulating system.
8. water electrolysis hydrogen production as claimed in claim 7 couples boiler oxygen-enriched combustion system, which is characterized in that the hydrogen moisture
It is connect from device, the oxygen separator with alkali liquor circulating system；
Alternatively, the hydrogen separator, the oxygen separator are connect with the water charging system, hydrogen separator and oxygen
The pure water of moisture trap separation is recycled with entering water charging system.
9. water electrolysis hydrogen production according to any one of claims 1 to 5 couples boiler oxygen-enriched combustion system, which is characterized in that
The boiler oxygen-enriched combustion system includes: oxygen decompressor, oxygen Secondary Air hybrid system, blower, boiler；
Wherein, the hydrogen purification system of the oxygen decompressor and water electrolysis hydrogen production system connects, for being for hydrogen purifying
The oxygen decompression of system output；The oxygen Secondary Air hybrid system is connect with the blower and the oxygen decompressor respectively,
The oxygen exported for mixing the Secondary Air conveyed from the blower and the oxygen decompressor；The boiler with it is described
The oxygen-rich mixture body of the connection of oxygen Secondary Air hybrid system, the oxygen Secondary Air hybrid system output is transported to the pot
Furnace burns.
10. water electrolysis hydrogen production as claimed in claim 9 couples boiler oxygen-enriched combustion system, which is characterized in that the boiler is rich
It is additionally provided with flow control valve on pipeline in oxygen combustion system, for regulating and controlling the size of oxygen flow.
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| CN201910906136.1A CN110513711A (en) | 2019-09-24 | 2019-09-24 | A kind of water electrolysis hydrogen production coupling boiler oxygen-enriched combustion system |
| PCT/CN2019/108579 WO2021056423A1 (en) | 2019-09-24 | 2019-09-27 | Water electrolysis hydrogen production and boiler oxygen-enriched combustion coupled system |
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| CN111336571A (en) * | 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 | Water electrolysis hydrogen production waste heat utilization system and working method thereof |
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| CN113405116A (en) * | 2021-06-29 | 2021-09-17 | 西安热工研究院有限公司 | System for reducing carbon emission by blending and burning ammonia gas and control method |
| CN114151785B (en) * | 2021-12-03 | 2024-04-05 | 上海源晗能源技术有限公司 | Carbon-based oxygen-enriched combustion and CO of coal-fired boiler 2 Trapping and utilizing process |
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