CN109638893A - A kind of urea waste water is used for high safety high efficiency wind power hydrogen production peak-frequency regulation system - Google Patents

A kind of urea waste water is used for high safety high efficiency wind power hydrogen production peak-frequency regulation system Download PDF

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Publication number
CN109638893A
CN109638893A CN201910091076.2A CN201910091076A CN109638893A CN 109638893 A CN109638893 A CN 109638893A CN 201910091076 A CN201910091076 A CN 201910091076A CN 109638893 A CN109638893 A CN 109638893A
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China
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hydrogen
electrolytic cell
waste water
power
urea
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CN201910091076.2A
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Inventor
曹曦
朱勇
刘明义
曹传钊
朱连峻
郑建涛
李晴
徐越
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Huaneng Clean Energy Research Institute
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Huaneng Clean Energy Research Institute
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Priority to CN201910091076.2A priority Critical patent/CN109638893A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381Dispersed generators
    • H02J3/382Dispersed generators the generators exploiting renewable energy
    • H02J3/386Wind energy
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/06Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0606Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
    • H01M8/0656Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants by electrochemical means
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28Arrangements for balancing of the load in a network by storage of energy
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/345Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/76Power conversion electric or electronic aspects
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/36Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30Systems combining energy storage with energy generation of non-fossil origin

Abstract

The invention discloses a kind of urea waste waters to be used for high safety high efficiency wind power hydrogen production peak-frequency regulation system, the output end of wind generator system is connected with the input terminal of power divider, two output ends of power divider are connected with the charging interface of the input terminal of transformer and battery respectively, the electric discharge interface of battery is connected with the power interface of electrolytic cell, urea waste water input channel is successively connected through filter device and wastewater storage tank with the liquid inlet of electrolytic cell, the cathode product of electrolytic cell exports successively through hydrogen gas buffer, hydrogen gas compressor and hydrogen container are connected with the hydrogen inlet of fuel cell, the output end of fuel cell is connected with the input terminal of transformer, the anodic product outlet of electrolytic cell is successively connected through oxygen surge tank and oxygen compressor with the entrance of oxygen container;The output end of transformer is connected with power grid, which can abandon the electrolytic hydrogen production that electricity realizes urea in urea waste water using abandonment, and the hydrogen output of electrolytic cell and service life are preferable.

Description

A kind of urea waste water is used for high safety high efficiency wind power hydrogen production peak-frequency regulation system
Technical field
The invention belongs to hydrogen manufacturing and environmental technology field, it is related to a kind of urea waste water for high safety high efficiency wind power hydrogen production Peak-frequency regulation system.
Background technique
With the fast development of hydrogen fuel cell, the energy of the hydrogen as most clean and effective has obtained extensive in recent years Concern.The hydrogen manufacturing mode of scale at present is mainly that natural gas (containing naphtha, heavy oil, refinery gas and oven gas etc.) water vapour turns Change, coal (containing coke and petroleum coke etc.) reforming hydrogen manufacturing and the hydrogen producing technologies such as urea or ammonia cracking hydrogen production, water electrolysis, but fossil energy Source conversion regime can not avoid zero carbon emission completely always.Water electrolysis hydrogen producing obtains the hydrogen of high-purity, hydrogen by electrolysis water Gas purity may be up to 99.9999%, and still, the power consumption of water electrolysis hydrogen producing is too big, cause cost excessively high.
However, a large amount of appearance of fast development and the abandonment of wind-powered electricity generation provide new chance for water electrolysis hydrogen production.According to In October, 2011, Energy Research Institute, National Development and Reform Commission issued " Development of Wind Power In China route map 2050 ", had proposed wind-powered electricity generation Start and will continue to become one of the main force's energy technology for realizing low-carbon energy strategy.Since the uncertainty of wind-power electricity generation is high, The fluctuation of wind power output power and frequency changes with the variation of wind speed, therefore, is affected by season, environment, position etc., Its output power quality is poor, reliability is low, and large-scale wind power integration is affected to power network safety operation;Meanwhile electricity Net is limited to the consumption of wind-power electricity generation, causes abandonment to abandon electricity serious.Water electrolysis hydrogen production is carried out using electricity is abandoned, it is not only possible to promote wind The efficiency of energy utilization of electric system, and addition product hydrogen is produced, realize the comprehensive utilization of wind energy resources.
One of big, seriously polluted, intractable waste water is measured in the China that also becomes gradually of urea waste water, by the extensive of people Concern.The problem of in order to handle water-saving and emission-reducing and environmental protection well, it would be desirable to which depth is carried out to waste water using reasonable technology It handles and is used, achieve the purpose that sustainable development.In urea waste water contain a large amount of urea, compared to traditional biochemistry, Physical treatment method carries out electrolysis processing to urea waste water, the purification of sewage not only may be implemented, moreover it is possible to realize sewage resource Change.Meanwhile the normal potential of urea is 0.37V, far below the theoretical voltage (1.23V) of electrolysis water.Therefore urea waste water may Electrolytic hydrogen production is realized under lower energy consumption.The reaction equation of urea electrolysis are as follows:
Cathode: 6H2O+6e-→3H2+6OH-
Anode: CO (NH2)2+6OH-→N2+5H2O+CO2+6e-
Overall reaction: CO (NH2)2+H2O→N2+3H2+CO2E=0.37V
From reaction equation, being electrolysed urea not only can use the hydrogen of urea itself, and hydrogen can also be obtained from water, because This, the utilization rate of hydrogen is very high.
But since wind power output has randomness, intermittence and fluctuation, when extra wind-powered electricity generation is directly accessed electricity When solving slot, the service life of hydrogen output and electrolytic cell can be impacted.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, it is high for high safety to provide a kind of urea waste water Efficiency wind power hydrogen production peak-frequency regulation system, the system can abandon the electrolytic hydrogen production that electricity realizes urea in urea waste water using abandonment, And the hydrogen output and service life of electrolytic cell are preferable, the flexibility of system is excellent.
In order to achieve the above objectives, urea waste water of the present invention is used for high safety high efficiency wind power hydrogen production peak-frequency regulation system System includes wind generator system, power divider, transformer, supercapacitor, battery, electrolyte storage tank, filter device, gives up Water storage tank, urea waste water case, electrolytic cell, hydrogen gas buffer, hydrogen gas compressor, hydrogen container, fuel cell, oxygen surge tank, oxygen Air compressor, oxygen container, tuning controller, AC-DC controller and DC-AC controller;
The output end of wind generator system is connected with the input terminal of power divider, two output ends of power divider It is connected respectively with the input terminal of the input terminal of transformer and AC-DC controller, the electricity of the electric discharge interface and electrolytic cell of battery Source interface is connected, and urea waste water case is successively connected through filter device and wastewater storage tank with the liquid inlet of electrolytic cell, electrolysis The cathode product outlet of slot is successively connected through hydrogen gas buffer and hydrogen gas compressor with the entrance of hydrogen container, the outlet of hydrogen container It is connected with the hydrogen inlet of fuel cell, the output end of fuel cell is connected with the input terminal of transformer, the sun of electrolytic cell Pole product exit is successively connected through oxygen surge tank and oxygen compressor with the entrance of oxygen container;The output end and electricity of transformer Net is connected;
Tuning controller is connected with wind generator system, power divider, electrolytic cell, supercapacitor and fuel cell It connects.
The output end of AC-DC controller is connected with the charging interface of supercapacitor, the electric discharge interface of supercapacitor It is connected with the input terminal of the charging interface of battery and DC-AC controller, output end and the DC-AC controller of fuel cell Input terminal is connected, and the output end of DC-AC controller is connected with the input terminal of transformer, tuning controller and supercapacitor It is connected.
Flow control valve is provided on pipeline between wastewater storage tank and electrolytic cell.
Electrolyte in the electrolytic cell is alkaline electrolyte, and when electrolytic cell is opened, it is 0.6V, electricity that decomposition voltage, which is first arranged, The cathode product of the cathode product outlet output of solution slot enters in hydrogen gas buffer, then enters hydrogen storage by hydrogen gas compressor In tank, the connection between the anodic product outlet and oxygen surge tank of electrolytic cell is disconnected at this time, and anodic product is directly discharged to greatly In gas;After being electrolysed preset time, when cathode is generated without gas, decomposition voltage is improved to 1.3V, the anode of electrolytic cell produces at this time Connection between object outlet and oxygen surge tank is opened, and the anodic product of the anodic product outlet output of electrolytic cell passes through oxygen pressure Contracting machine enters in oxygen container;Changed according to the liquid level of electrolyzer, urea waste water is mended into electrolytic cell by wastewater storage tank, and follow The ring above process supplements electrolyte to electrolytic cell by electrolyte storage tank.
When the generated output of wind generator system is greater than power grid demand, tuning controller controls power divider for wind-force The extra electricity that electricity generation system generates is stored in supercapacitor, after supercapacitor is fully charged, is then carried out to battery Charging, after battery is fully charged, tuning controller control electrobath start, by electrolytic cell to the urea in urea waste water into Row electrolytic hydrogen production, and the hydrogen of generation is stored in hydrogen container after hydrogen gas buffer buffering, hydrogen gas compressor compression.
When the output power of wind generator system is not able to satisfy power grid demand, tuning controller starts supercapacitor, Power grid is powered by supercapacitor, when supercapacitor electricity deficiency, tuning controller starting fluid battery, combustion Expect that battery generates direct current using the hydrogen in hydrogen container, the direct current of generation is then converted into exchange through DC-AC controller It is supplied to power grid after electricity, provides electric energy by battery at this time for electrolytic cell, hydrogen is generated by electrolytic tank electrolysis urea, works as storage When the remaining capacity of battery is lower than minimum electricity preset value, then battery stops to electrolyzer with electricity.
The mass concentration of urea is 0.1%-100% in urea waste water in wastewater storage tank.
The purity of hydrogen gas compressor inlet hydrogen is 99.9%.
The purity of oxygen compressor inlet oxygen is 99.9%.
The invention has the following advantages:
Urea waste water of the present invention for high safety high efficiency wind power hydrogen production peak-frequency regulation system when specific operation, When the output power of wind generator system is greater than power grid demand, tuning controller controls power divider for wind generator system The extra electricity generated is stored in supercapacitor and battery, and to electrolyzer with electricity hydrogen manufacturing, to dissolve wind-power electricity generation system The abandonment power of system, the generating efficiency and wind-resources for improving wind generator system utilize level.In addition, working as the output of electricity generation system When power is not able to satisfy power grid demand, first passes through supercapacitor and power grid is powered, when supercapacitor electricity deficiency, Then power grid is powered by fuel cell collaboration, battery is continued to electrolyzer with electricity hydrogen manufacturing at this time, until electric power storage Pond electricity closes electrolytic cell down to after a certain amount of;Battery is installed additional to electrolytic cell, guarantees that accumulator electric-quantity is in a certain range It is interior, electrolysis unit can be effectively prevented due to continually switching caused by wind power fluctuation, can effectively improve system Stability, safety and service life;In addition, realizing wastewater treatment by being electrolysed to the urea in urea waste water Meanwhile being fuel cell with hydrogen gas, environment protection significance with higher and comprehensive benefit, also, relative to traditional water electrolysis, The voltage of urea electrolytic hydrogen production is 0.37V, is greatly saved the power consumption of electrolytic hydrogen production.
In addition, it is necessary to explanation, when the output-power fluctuation of wind generator system, the present invention first passes through super capacitor Device charge or discharge, it is small using ultracapacitor energy storage internal resistance, have extended cycle life, power density is high and the spy of fast response time Point effectively stabilizes the fluctuation of wind-powered electricity generation, reduces direct impact of the wind-powered electricity generation fluctuation to power grid and electrolytic cell, while passing through super electricity Container makes up the slow problem of fuel cell dynamic responding speed, with the dynamic responding speed of lifting system.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Wherein, 1 it is wind generator system, 2 be power divider, 3 be AC-DC controller, 4 be DC-AC controller, 5 is Transformer, 6 be supercapacitor, 7 be electrolytic cell, 8 be battery, 9 be oxygen surge tank, 10 be hydrogen gas buffer, 11 be oxygen Air compressor, 12 be hydrogen gas compressor, 13 be oxygen container, 14 be hydrogen container, 15 be wastewater storage tank, 16 be filter device, 17 be Electrolyte storage tank, 18 be urea waste water case, 19 be fuel cell, 20 be tuning controller.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work It encloses.
With reference to Fig. 1, urea waste water of the present invention includes for high safety high efficiency wind power hydrogen production peak-frequency regulation system Wind generator system 1, power divider 2, transformer 5, supercapacitor 6, battery 8, electrolyte storage tank 17, filter device 16, wastewater storage tank 15, urea waste water case 18, electrolytic cell 7, hydrogen gas buffer 10, hydrogen gas compressor 12, hydrogen container 14, fuel electricity Pond 19, oxygen surge tank 9, oxygen compressor 11, oxygen container 13 and tuning controller 20, AC-DC controller 3 and DC-AC control Device 4;Two output ends of the output end of wind generator system 1 and power divider 2 respectively with the input terminal and AC- of transformer 5 The input terminal of DC controller 3 is connected, and the electric discharge interface of battery 8 is connected with the power interface of electrolytic cell 7, urea waste water case 18 are successively connected through filter device 16 and wastewater storage tank 15 with the liquid inlet of electrolytic cell 7, the cathode product outlet of electrolytic cell 7 Successively it is connected through hydrogen gas buffer 10 and hydrogen gas compressor 12 with the entrance of hydrogen container 14, the outlet of hydrogen container 14 and fuel electricity The hydrogen inlet in pond 19 is connected, and the output end of fuel cell 19 is connected with the input terminal of transformer 5, the anode of electrolytic cell 7 Product exit is successively connected through oxygen surge tank 9 and oxygen compressor 11 with the entrance of oxygen container 13;The output end of transformer 5 It is connected with power grid;Tuning controller 20 and wind generator system 1, power divider 2, electrolytic cell 7, supercapacitor 6 and combustion Material battery 19 is connected.
The output end of AC-DC controller 3 is connected with the charging interface of supercapacitor 6, and the electric discharge of supercapacitor 6 connects Mouth is connected with the input terminal of the charging interface of battery 8 and DC-AC controller 4, and the output end and DC-AC of fuel cell 19 are controlled The input terminal of device 4 processed is connected, and the output end of DC-AC controller 4 is connected with the input terminal of transformer 5, tuning controller 20 It is connected with supercapacitor 6.
The present invention at work, when the generated output of wind generator system 1 is greater than power grid demand, control by tuning controller 20 The extra electricity that power divider 2 processed generates wind generator system 1 is stored in supercapacitor 6, when supercapacitor 6 is filled It after full electricity, then charges to battery 8, after battery 8 is fully charged, tuning controller 20 controls electrolytic cell 7 and starts, and passes through Electrolytic cell 7 carries out electrolytic hydrogen production to urea waste water, and the hydrogen of generation is pressed through the buffering of hydrogen gas buffer 10, hydrogen gas compressor 12 It is stored in after contracting in hydrogen container 14.
When the output power of wind generator system 1 is not able to satisfy power grid demand, tuning controller 20 starts super capacitor Device 6 is powered power grid by supercapacitor 6, when 6 not enough power supply of supercapacitor, the starting combustion of tuning controller 20 Expect that battery 19, fuel cell 19 generate direct current using the hydrogen in hydrogen container 14, then control the direct current of generation through DC-AC Device 4 processed supplies power grid after being converted to alternating current, is at this time that electrolytic cell 7 provides electric energy by battery 8, is electrolysed by electrolytic cell 7 Urea generates hydrogen, and when the remaining capacity of battery 8 is lower than minimum electricity preset value, then battery 8 stops supplying electrolytic cell 7 Electricity.
In addition, it is necessary to illustrate, in the unlatching of electrolytic cell 7, it is 0.6V that decomposition voltage, which is first arranged,, occur in electrolytic cell 7 Cell reaction are as follows:
Cathode: 6H2O+6e-→3H2+6OH-
Anode: CO (NH2)2+6OH-→N2+5H2O+CO2+6e-
Overall reaction: CO (NH2)2+H2O→N2+3H2+CO2E=0.37V
The cathode product outlet connection hydrogen gas buffer 10 of electrolytic cell 7, and enter hydrogen container 14 by hydrogen gas compressor 12 In;The connection between the anodic product outlet and oxygen surge tank 9 of electrolytic cell 7 disconnects at this time, and the anodic product of electrolytic cell 7 is direct It is discharged into atmosphere.
After being electrolysed a period of time, when the cathode of electrolytic cell 7 is generated without gas, the decomposition voltage of electrolytic cell 7 is improved extremely 1.3V, the cell reaction occurred in electrolytic cell 7 at this time are as follows:
Anode reaction equation: 4OH?→O2+2H2O+4e?
Cathode reaction equation: 2H2O+2e?→H2+2OH?
Overall reaction equation: 2H2O→2H2+O2
Anodic product outlet by electrolytic cell 7 at this time and the connection between oxygen surge tank 9 are opened, and are compressed by oxygen Machine 11 enters in oxygen container 13;Electrolytic cell 7 cathode product outlet connection hydrogen gas buffer 10, and by hydrogen gas compressor 12 into Enter in hydrogen container 14;
The mass concentration of urea is 0.1%-100% in urea waste water in wastewater storage tank 15;12 inlet of hydrogen gas compressor The purity of hydrogen is 99.9%;The purity of 11 inlet oxygen of oxygen compressor is 99.9%.
In embodiment provided herein, it should be understood that disclosed technology contents, it can be by another way It realizes.Wherein, the apparatus embodiments described above are merely exemplary, such as the division of the unit, can be one kind Logical function partition, there may be another division manner in actual implementation, such as multiple units or components can combine or can To be integrated into another system, or some features can be ignored or not executed.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list Member both can take the form of hardware realization, can also realize in the form of software functional units.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills Art field, is included within the scope of the present invention.

Claims (9)

1. a kind of urea waste water is used for high safety high efficiency wind power hydrogen production peak-frequency regulation system, which is characterized in that sent out including wind-force Electric system (1), power divider (2), transformer (5), supercapacitor (6), battery (8), electrolyte storage tank (17), filtering Device (16), wastewater storage tank (15), urea waste water case (18), electrolytic cell (7), hydrogen gas buffer (10), hydrogen gas compressor (12), Hydrogen container (14), fuel cell (19), oxygen surge tank (9), oxygen compressor (11), oxygen container (13), tuning controller (20), AC-DC controller (3) and DC-AC controller (4);
The output end of wind generator system (1) is connected with the input terminal of power divider (2), and two of power divider (2) Output end is connected with the input terminal of the input terminal of transformer (5) and AC-DC controller (3) respectively, and the electric discharge of battery (8) connects Mouth is connected with the power interface of electrolytic cell (7), and urea waste water case (18) is successively through filter device (16) and wastewater storage tank (15) It is connected with the liquid inlet of electrolytic cell (7), the cathode product of electrolytic cell (7) exports successively through hydrogen gas buffer (10) and hydrogen Compressor (12) is connected with the entrance of hydrogen container (14), the outlet and the hydrogen inlet phase of fuel cell (19) of hydrogen container (14) Connection, the output end of fuel cell (19) is connected with the input terminal of transformer (5), the anodic product of electrolytic cell (7) export according to It is secondary to be connected through oxygen surge tank (9) and oxygen compressor (11) with the entrance of oxygen container (13);The output end of transformer (5) with Power grid is connected;
Tuning controller (20) and wind generator system (1), power divider (2), electrolytic cell (7), supercapacitor (6) and combustion Material battery (19) is connected.
2. urea waste water according to claim 1 is used for high safety high efficiency wind power hydrogen production peak-frequency regulation system, feature It is, the output end of AC-DC controller (3) is connected with the charging interface of supercapacitor (6), and supercapacitor (6) are put Electrical interface is connected with the input terminal of the charging interface of battery (8) and DC-AC controller (4), the output of fuel cell (19) End is connected with the input terminal of DC-AC controller (4), the input terminal phase of the output end and transformer (5) of DC-AC controller (4) Connection, tuning controller (20) are connected with supercapacitor (6).
3. urea waste water according to claim 1 is used for high safety high efficiency wind power hydrogen production peak-frequency regulation system, feature It is, the electrolyte in the electrolytic cell (7) is alkaline electrolyte, and when electrolytic cell (7) is opened, decomposition voltage, which is first arranged, is The cathode product of 0.6V, the cathode product outlet output of electrolytic cell (7) enter in hydrogen gas buffer (10), then pass through hydrogen Compressor (12) enters in hydrogen container (14), at this time the company between the anodic product outlet and oxygen surge tank (9) of electrolytic cell (7) Disconnection is connect, anodic product is directly discharged in atmosphere;After being electrolysed preset time, when cathode is generated without gas, electrolysis electricity is improved It is depressed into 1.3V, the connection between the anodic product outlet and oxygen surge tank (9) of electrolytic cell (7) is opened at this time, electrolytic cell (7) The anodic product of anodic product outlet output enters in oxygen container (13) by oxygen compressor (11);According to the electrolytic cell (7) fluid change mends urea waste water into electrolytic cell (7) by wastewater storage tank (15), and recycles the above process, passes through electrolyte Storage tank (18) supplements electrolyte to electrolytic cell (7).
4. urea waste water according to claim 1 is used for high safety high efficiency wind power hydrogen production peak-frequency regulation system, feature It is, is provided with flow control valve on the pipeline between wastewater storage tank (15) and electrolytic cell (7).
5. urea waste water according to claim 2 is used for high safety high efficiency wind power hydrogen production peak-frequency regulation system, feature It is, when the generated output of wind generator system (1) is greater than power grid demand, tuning controller (20) controls power divider (2) the extra electricity that wind generator system (1) generates is stored in supercapacitor (6), when supercapacitor (6) is fully charged Afterwards, then it charges to battery (8), after battery (8) is fully charged, tuning controller (20) controls electrolytic cell (7) starting, Electrolytic hydrogen production is carried out to the urea in urea waste water by electrolytic cell (7), and the hydrogen of generation is slow through hydrogen gas buffer (10) It is stored in hydrogen container (14) after punching, hydrogen gas compressor (12) compression.
6. urea waste water according to claim 2 is used for high safety high efficiency wind power hydrogen production peak-frequency regulation system, feature It is, when the output power of wind generator system (1) is not able to satisfy power grid demand, tuning controller (20) starts super capacitor Device (6) is powered power grid by supercapacitor (6), when supercapacitor (6) not enough power supply, tuning controller (20) starting fluid battery (19), fuel cell (19) generate direct current using the hydrogen in hydrogen container (14), then will generate Direct current supply power grid after DC-AC controller (4) is converted to alternating current, continue as electrolytic cell by battery (8) at this time (7) electric energy is provided, urea hydrogen making is electrolysed, when the remaining capacity of battery (8) is lower than minimum electricity preset value, then electric power storage Pond (8) stops powering to electrolytic cell (7).
7. urea waste water according to claim 1 is used for high safety high efficiency wind power hydrogen production peak-frequency regulation system, feature It is, the mass concentration of urea is 0.1%-100% in urea waste water in wastewater storage tank (15).
8. urea waste water according to claim 2 is used for high safety high efficiency wind power hydrogen production peak-frequency regulation system, feature It is, the purity of hydrogen gas compressor (12) inlet hydrogen is 99.9%.
9. urea waste water according to claim 2 is used for high safety high efficiency wind power hydrogen production peak-frequency regulation system, feature It is, the purity of oxygen compressor (11) inlet oxygen is 99.9%.
CN201910091076.2A 2019-01-30 2019-01-30 A kind of urea waste water is used for high safety high efficiency wind power hydrogen production peak-frequency regulation system Pending CN109638893A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111404181A (en) * 2020-03-19 2020-07-10 国电联合动力技术有限公司 Multi-energy coupling complementary energy storage system and energy storage control method
CN113309986A (en) * 2021-05-26 2021-08-27 阳光电源股份有限公司 Hydrogen supply method, hydrogen supply device and hydrogen supply system
CN113737201A (en) * 2021-09-07 2021-12-03 西安热工研究院有限公司 System and method for peak shaving of thermal power plant by electrolyzing concentrated water to prepare hydrogen
CN113832475A (en) * 2021-09-23 2021-12-24 中国大唐集团新能源科学技术研究院有限公司 Renewable energy hydrogen production system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111404181A (en) * 2020-03-19 2020-07-10 国电联合动力技术有限公司 Multi-energy coupling complementary energy storage system and energy storage control method
CN113309986A (en) * 2021-05-26 2021-08-27 阳光电源股份有限公司 Hydrogen supply method, hydrogen supply device and hydrogen supply system
CN113737201A (en) * 2021-09-07 2021-12-03 西安热工研究院有限公司 System and method for peak shaving of thermal power plant by electrolyzing concentrated water to prepare hydrogen
CN113832475A (en) * 2021-09-23 2021-12-24 中国大唐集团新能源科学技术研究院有限公司 Renewable energy hydrogen production system
CN113832475B (en) * 2021-09-23 2022-07-26 中国大唐集团新能源科学技术研究院有限公司 Hydrogen production system by renewable energy sources

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