CN105221363A - Middle low temperature underground heat and biological fuel gas combined generating system and cost of electricity-generating computational methods - Google Patents

Middle low temperature underground heat and biological fuel gas combined generating system and cost of electricity-generating computational methods Download PDF

Info

Publication number
CN105221363A
CN105221363A CN201510664898.7A CN201510664898A CN105221363A CN 105221363 A CN105221363 A CN 105221363A CN 201510664898 A CN201510664898 A CN 201510664898A CN 105221363 A CN105221363 A CN 105221363A
Authority
CN
China
Prior art keywords
communicated
working medium
output terminal
gas
input end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201510664898.7A
Other languages
Chinese (zh)
Other versions
CN105221363B (en
Inventor
赵波
杨善让
曹生现
王恭
刘志超
李达
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Northeast Electric Power University
Original Assignee
Northeast Dianli University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Northeast Dianli University filed Critical Northeast Dianli University
Priority to CN201510664898.7A priority Critical patent/CN105221363B/en
Publication of CN105221363A publication Critical patent/CN105221363A/en
Application granted granted Critical
Publication of CN105221363B publication Critical patent/CN105221363B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/10—Geothermal energy

Landscapes

  • Processing Of Solid Wastes (AREA)

Abstract

Low temperature underground heat and biological fuel gas combined generating system in one, be characterized in: comprise the working medium superheater of working medium vaporizer and gas fired boiler, prime mover, generator be connected, prime mover is communicated with working fluid condenses device, working medium storage tank, and working medium storage tank is communicated with the working medium preheater of gas fired boiler by working medium booster pump; Producing well is communicated with geothermal water treatment device, working medium vaporizer, and working medium vaporizer is communicated with heating pipe in heating pipe, first in second, and in first, heating pipe stores up with recharge well, underground heat, producing well is communicated with; Living beings are communicated with acidification hydrolization tank and are communicated with natural pond fertilizer with natural pond slag fermenting tub by natural pond slag recycle pump, and natural pond slag fermenting tub is communicated with gas holder by the first combustion gas booster pump; Acidification hydrolization tank is communicated with anaeroic digestor by organic acid recycle pump, and anaeroic digestor is communicated with the burner of gas holder, gas fired boiler by the second combustion gas booster pump; Anaeroic digestor filler module is placed in anaeroic digestor.And its cost of electricity-generating computational methods are provided.

Description

Middle low temperature underground heat and biological fuel gas combined generating system and cost of electricity-generating computational methods
Technical field
The present invention relates to multiple renewable energy sources combination technical field of power generation, is low temperature underground heat and biological fuel gas combined generating system and cost of electricity-generating computational methods in one.
Background technique
Geothermal power as the one of natural energy resources, reserves large (being about global coal storage quantity 1.7 hundred million times), low-carbon (LC), clean, can directly utilize, it is advantageous that: in lifetime, can not supply by continous-stable by the impact of rain or shine day-night change.The identified geothermal resources of China are equivalent to 2,000 trillion tons of mark coals, account for the whole world and find out 40% of geothermal resources amount, but its overwhelming majority belongs to middle temperature (150-90 DEG C) low temperature (<90 DEG C) geothermal resources, because its working medium enthalpy drop is too small, the thermal efficiency very low (only 3% ~ 6%), Steam Power Circulation generating can not be directly used in, and be abandoned.
In addition, biomass energy is a kind of renewable energy sources of rich reserves, can generate electricity with the fossil energy of Substitute For Partial with coal for mixing combustion, meanwhile, biomass energy combustion temperature is high, can significantly improve power cycle working medium initial temperature, but biomass energy is as the deficiency of power generation energy resource: energy density is low, and the utilization ratio of its direct combustion only has 10%, the region of straw utilization is only limitted to arable land district, and China's cultivated area only accounts for 12.68% of area; The dedicated energy plant that energy density is high but strives ground with grain crops.For improving biomass energy utilization ratio, change its Land use systems into anaerobic fermentation by direct combustion, its energy utilization rate can reach more than 60%.
Summary of the invention
The object of the invention is, for in cryogenically heat generating system temperature is low, heat is large, biomass fuel flue-gas temperature that gas firing produces is high, the feature that heat is few, and anaerobic digester system biomass material not easily collecting, cause the present situation of its aerogenesis finite capacity, by combining prior art and innovating, low temperature underground heat and biological fuel gas combined generating system in one are provided, be characterized in, large with heat, during temperature is low, cryogenically hotwork is power cycle working medium evaporation thermal source, temperature is high, the less biological flue gas of heat is as the overheated thermal source of working medium, realize continuously, stable, efficiency power generation, and form and heat transfer process based on the structure of system, set up scientific and reasonable, applicability is strong, can calculate the cost of electricity-generating of combined generating system, assess middle low temperature underground heat and the biological fuel gas combined generating system cost of electricity-generating appraisal procedure of this systematic economy benefit.
Realizing one of technological scheme that the object of the invention adopts is: low temperature underground heat and biological fuel gas combined generating system in one, it is characterized in that: it comprises working medium vaporizer 11 low temperature side gaseous working medium output terminal and is communicated with the working medium superheater 21 low temperature side input end of gas fired boiler 23, the working medium superheater 21 low temperature side output terminal of gas fired boiler 23 is communicated with prime mover 24 input end, prime mover 24 is connected with generator 25, prime mover 24 output terminal is communicated with working fluid condenses device 26 input end, working fluid condenses device 26 output terminal is communicated with working medium storage tank 27 input end, working medium storage tank 27 output terminal is communicated with the working medium preheater 22 low temperature side input end of gas fired boiler 23 by working medium booster pump 28, the working medium preheater 22 low temperature side output terminal of gas fired boiler 23 is communicated with working medium vaporizer 11 low temperature side liquid refrigerant input end, producing well 7 output terminal is communicated with geothermal water treatment device 10 input end, geothermal water treatment device 10 output terminal is communicated with working medium vaporizer 11 high temperature side geothermal water entrance, the outlet of working medium vaporizer 11 high temperature side geothermal water is communicated with heating pipe in second 18 input end by geothermal water recycle pump 12, in second, heating pipe 18 output terminal is communicated with heating pipe in first 3 input end, in first, heating pipe 3 output terminal is communicated with recharge well 8 input end, and recharge well 8 output terminal is communicated with producing well 7 input end by underground heat storage 9, living beings 1 are communicated with acidification hydrolization tank 2 first input end, acidification hydrolization tank 2 first output terminal is communicated with natural pond slag fermenting tub 5 input end by natural pond slag recycle pump 4, natural pond slag fermenting tub 5 first output terminal is communicated with natural pond fertile 6, and natural pond slag fermenting tub 5 second output terminal is communicated with gas holder 14 first input end by the first combustion gas booster pump 13, acidification hydrolization tank 2 second output terminal is communicated with anaeroic digestor 16 input end by organic acid recycle pump 17, anaeroic digestor 16 first output terminal is communicated with acidification hydrolization tank 2 second input end by acid cycle pump 29, anaeroic digestor 16 second output terminal is communicated with gas holder 14 second input end by the second combustion gas booster pump 15, and gas holder 14 output terminal is communicated with the burner 20 of gas fired boiler 23, anaeroic digestor filler module 19 is placed in anaeroic digestor 16.
Described working fluid condenses device 26 comprises direct water supply water-cooled surfaces formula vapour condenser, wet cooling tower surface condenser, direct air condensed steam device, surface-type indirect air cooling vapour condenser, hybrid indirect air cooling vapour condenser.
Described anaeroic digestor filler module 19 comprises tube sheet 31, frame support 30 and particle arm 33, tube sheet 31 is drilled with the plate hole 32 of cross arrangement, porous porous particle support 33 is inserted in plate hole 32, porous porous particle support is embedded with porous particle 34 33 times, the anaeroic digestor filler module 19 that tube sheet 31 4 jiaos is combined into up and down by frame support 30, front and back are penetrating, porous particle 34 particle diameter is 5-10mm, and porous particle 34 spacing is 2-5mm, porous porous particle support 33 below diameter 0.5mm.
Described geothermal water treatment device 10 comprises moisture trap 41 first output terminal and is communicated with biological desulphurization tower 42 input end, and biological desulphurization tower 42 output terminal is communicated with Purge gas 43 delivery end; Moisture trap 41 second output terminal is communicated with spiral-flow type desanding device 45 input end, spiral-flow type desanding device 45 output terminal is communicated with manganese sand tramp iron separator 46 input end, manganese sand tramp iron separator 46 output terminal is communicated with adsorption tanks 48 input end by booster water pump 47, is provided with calcium ions and magnesium ions sorbent 49 in adsorption tanks 48.
Realize the technological scheme that the object of the invention adopts two are: low temperature underground heat and biological fuel gas combined generating system cost of electricity-generating computational methods in one, it is characterized in that: cost of electricity-generating mainly comprises the equipment investment of underground heat evaporation working medium, biological fuel gas crosses hot working fluid equipment investment, generator set device investment, biomass material cost and operation expense, and whole system cost of electricity-generating simple calculating method is by following set of equation quantitative description:
The equipment investment of underground heat evaporation working medium:
K invest,geo＝e geo·P geo(1)
Biological fuel gas crosses hot working fluid equipment investment:
x b i o = ( h b i o - h g e o ) ( h b i o - h g e o ) + ( h g e o - h n , 1 ) - - - ( 2 )
Q b i o = P g e o &CenterDot; x b i o ( 1 - x b i o ) &CenterDot; &eta; b &times; &tau; a - - - ( 3 )
K invest,bio＝(Q bio/C bio,gas)·e bio,gas(4)
Generator set device is invested:
K invest,plant＝P net·e plant(5)
System equipment gross investment:
K invest＝K invest,bio+K invest,geo+K invest,plant(6)
Year biomass fuel cost:
K fuel＝(Q bio/C bio,gas)·e biomass(7)
Year operation expense:
K O&M＝P net·e O&M(8)
Year the accumulative total of generating electricity:
E net＝P net·τ a(9)
Cost of electricity-generating:
c r f = k d ( 1 + k d ) n ( 1 + k d ) n - 1 + k i n s u r a n c e - - - ( 11 )
Wherein, K invest, geothe equipment investment of geothermal power evaporation working medium, P geosolely thermal electric generator pool-size, e geothe equipment investment of unit capacity geothermal power evaporation working medium, K invest, biobiological fuel gas crosses hot working fluid equipment investment, x biobiomass utilization mark, h bioworking medium superheater outlet working medium enthalpy, h geoworking medium evaporator outlet working medium enthalpy, h n,lworking medium evaporator inlet working medium enthalpy, Q biobiological fuel gas crosses hot working fluid annual heat consumption, η bthe biological mass gas burnnig boiler thermal efficiency, τ aworking time in system year, C bio, gasbiological fuel gas calorific value, e bio, gasper unit volume biological fuel gas cost of production, K invest, plantgenerator set device is invested, P netsystem total installation of generating capacity, e plantunit capacity generator set device is invested, K investsystem equipment gross investment, K fuelyear accumulative biomass material cost, e biomassunit mass biomass material cost, K o & Myear operation expense, e o & Munit capacity generator set year operation expense, E netyear the accumulative total of generating electricity, LEC cost of electricity-generating, crf capital recovery factor, K insuranceannual premium rate, k dactual debts interest rate; N unit depreciation period;
Simultaneous formula (2), formula (3), formula (4), determine K invest, bio, then simultaneous formula (1), formula (5), formula (6), determine K invest, simultaneous formula (7), formula (8), formula (9), formula (10), formula (11) determine LEC.
The advantage applies of middle low temperature underground heat of the present invention and biological fuel gas combined generating system exists:
1) adopt lower boiling material as power cycle working medium, as green working medium such as ammonia, carbon dioxide, organic working medium, in can absorbing in working medium vaporizer, cryogenically heat from heat source is gasificated into saturated vapor, again can under low ambient temperature condition expansion work avoid freezing;
2), heat low with temperature large in low temperature underground heat to gasify thermal source for working medium, the biological mass gas burnnig boiler flue gas that temperature is higher, heat is little is the overheated thermal source of working medium, for prime mover provides the stable energy, provides prime mover group inlet condition, combine low temperature underground heat in utilization, biological fuel gas realizes stable, efficient, clean electric power generation;
3) anaeroic digestor of system and acidification hydrolization tank adopt the geothermal water of recharging still having uniform temperature to be heat source, anaeroic digestor and acidification hydrolization tank is entered according to the sequence of required heat source temperature by heating pipe built-in, improve the temperature of its anaerobic digestion and acidification hydrolization, and then improve anaerobic digestion and acidification hydrolization speed, realize medium and high temperature anaerobic digestion process, improve factor of created gase;
4) geothermal water treatment device order removes hydrogen sulfide, gravel, iron ion, calcium ions and magnesium ions etc., and hydrogen sulfide can be suppressed to exchange heat pipe corrosion, and prevention depositing gravel, avoids conduit pipe, heat exchanging tube deposition of iron thing to pile up, control calcium ions and magnesium ions fouling etc.;
5) porous particle of proper alignment is embedded with in anaeroic digestor filler module, the rough surface of porous particle, be conducive to anaerobic bacteria solidification and provide wide breeding space for it, increase anaerobic bacteria contacts with organic acid and exchanges probability and provide sufficient nutrition for it, and then improve proliferative speed and the reproductive number of anaerobic bacteria, strengthening organic acid convective mass transfer, heat transfer process, maintain organic acid temperature constant, evenly, improve anaerobic digester system gas production rate;
6) on the basis of middle low temperature geothermal power generation, biological fuel gas superheater is connected in series, along with the change of superheat temperature, estimation apparatus investment and generating total amount;
7) simple and reasonable for structure, cheap, without particular/special requirement equipment, exploitativeness is good, the more important thing is and improves renewable energy power generation efficiency, achieves efficient, the economic generating of renewable energy sources, energy-saving and environmental protection Be very effective;
8) low temperature underground heat and biological fuel gas combined generating system cost of electricity-generating computational methods in, based on system composition pattern and working medium heat exchange, acting process, according to the size of working medium superheat temperature, be divided into geothermal source evaporation working medium part, biological fuel gas combustion product gases crosses hot working fluid part and generator set acting power generation part, each several part equipment investment is calculated according to the size of system overheat degree, required biomass material cost, operation and maintenance cost, year the accumulative total of generating electricity, its methodological science is reasonable, the cost of electricity-generating of combined generating system can be calculated, assess the economic benefit of this system.
Accompanying drawing explanation
Fig. 1 is middle low temperature underground heat and biological fuel gas combined generating system structural representation;
Fig. 2 is anaeroic digestor filler modular structure schematic diagram;
Fig. 3 is geothermal water treatment device structural representation;
Fig. 4 is that middle low temperature underground heat and biological fuel gas combined generating system thermal efficiency of cycle are with working medium superheat temperature variation tendency schematic diagram;
Fig. 5 be middle low temperature underground heat and biological fuel gas combined generating system unit gross output with energy-photoelectric transformation efficiency with working medium superheat temperature variation tendency schematic diagram;
Fig. 6 is that middle low temperature underground heat and biological fuel gas combined generating system cost of electricity-generating are with working medium superheat temperature variation tendency schematic diagram.
In figure: 1 living beings, 2 acidification hydrolization tanks, heating pipe in 3 first, 4 natural pond slag recycle pumps, 5 natural pond slag fermenting tubs, 6 natural ponds are fertile, 7 producing wells, 8 recharge wells, 9 underground heat storages, 10 geothermal water treatment device, 11 working medium vaporizers, 12 geothermal water recycle pumps, 13 first combustion gas booster pumps, 14 gas holder, 15 second combustion gas booster pumps, 16 anaeroic digestors, 17 organic acid recycle pumps, heating pipe in 18 second, 19 anaeroic digestor filler modules, 20 gas burners, 21 working medium superheaters, 22 working medium preheaters, 23 gas fired boilers, 24 prime mover, 25 generators, 26 working fluid condenses devices, 27 working medium storage tanks, 28 working medium booster pumps, 29 acid cycle pumps, 30 frame supports, 31 tube sheets, 32 plate holes, 33 porous particle supports, 34 porous particles, 41 moisture traps, 42 biological desulphurization towers, 43 Purge gas, 45 spiral-flow type desanding devices, 46 manganese sand tramp iron separators, 47 booster water pumps, 48 adsorption tanks, 49 calcium ions and magnesium ions sorbents.
Embodiment
The invention will be further described to utilize the drawings and specific embodiments below.
With reference to Fig. 1, middle low temperature underground heat of the present invention and biological fuel gas combined generating system, comprise working medium vaporizer 11 low temperature side gaseous working medium output terminal to be communicated with the working medium superheater 21 low temperature side input end of gas fired boiler 23, the working medium superheater 21 low temperature side output terminal of gas fired boiler 23 is communicated with prime mover 24 input end, prime mover 24 is connected with generator 25, prime mover 24 output terminal is communicated with working fluid condenses device 26 input end, working fluid condenses device 26 output terminal is communicated with working medium storage tank 27 input end, working medium storage tank 27 output terminal is communicated with the working medium preheater 22 low temperature side input end of gas fired boiler 23 by working medium booster pump 28, the working medium preheater 22 low temperature side output terminal of gas fired boiler 23 is communicated with working medium vaporizer 11 low temperature side liquid refrigerant input end, producing well 7 output terminal is communicated with geothermal water treatment device 10 input end, geothermal water treatment device 10 output terminal is communicated with working medium vaporizer 11 high temperature side geothermal water entrance, the outlet of working medium vaporizer 11 high temperature side geothermal water is communicated with heating pipe in second 18 input end by geothermal water recycle pump 12, in second, heating pipe 18 output terminal is communicated with heating pipe in first 3 input end, in first, heating pipe 3 output terminal is communicated with recharge well 8 input end, and recharge well 8 output terminal is communicated with producing well 7 input end by underground heat storage 9, living beings 1 are communicated with acidification hydrolization tank 2 first input end, acidification hydrolization tank 2 first output terminal is communicated with natural pond slag fermenting tub 5 input end by natural pond slag recycle pump 4, natural pond slag fermenting tub 5 first output terminal is communicated with natural pond fertile 6, and natural pond slag fermenting tub 5 second output terminal is communicated with gas holder 14 first input end by the first combustion gas booster pump 13, acidification hydrolization tank 2 second output terminal is communicated with anaeroic digestor 16 input end by organic acid recycle pump 17, anaeroic digestor 16 first output terminal is communicated with acidification hydrolization tank 2 second input end by acid cycle pump 29, anaeroic digestor 16 second output terminal is communicated with gas holder 14 second input end by the second combustion gas booster pump 15, and gas holder 14 output terminal is communicated with the burner 20 of gas fired boiler 23, anaeroic digestor filler module 19 is placed in anaeroic digestor 16.
With reference to Fig. 1, described working fluid condenses device 26 comprises direct water supply water-cooled surfaces formula vapour condenser, wet cooling tower surface condenser, direct air condensed steam device, surface-type indirect air cooling vapour condenser, hybrid indirect air cooling vapour condenser.
With reference to Fig. 2, anaeroic digestor filler module 19 comprises tube sheet 31, frame support 30 and particle arm 33, tube sheet 31 is drilled with the plate hole 32 of cross arrangement, porous particle support 33 is inserted in plate hole 32, porous particle support is embedded with porous particle 34 33 times, the anaeroic digestor filler module 19 that tube sheet 31 4 jiaos is combined into up and down by frame support 30, front and back are penetrating, and porous particle 34 particle diameter is 5-10mm, porous particle 34 spacing is 2-5mm, porous particle support 33 below diameter 0.5mm.
With reference to Fig. 3, geothermal water treatment device 10 comprises moisture trap 41 first output terminal and is communicated with biological desulphurization tower 42 input end, and biological desulphurization tower 42 output terminal is communicated with Purge gas 43 delivery end; Moisture trap 41 second output terminal is communicated with spiral-flow type desanding device 45 input end, spiral-flow type desanding device 45 output terminal is communicated with manganese sand tramp iron separator 46 input end, manganese sand tramp iron separator 46 output terminal is communicated with adsorption tanks 48 input end by booster water pump 47, is provided with calcium ions and magnesium ions sorbent 49 in adsorption tanks 48.
With reference to Fig. 4-Fig. 6, low temperature underground heat and biological fuel gas combined generating system cost of electricity-generating computational methods in of the present invention, mainly comprise underground heat evaporation working medium equipment investment, biological fuel gas cross hot working fluid equipment investment, generator set device investment, biomass material cost and operation expense, whole system cost of electricity-generating simple calculating method is by following set of equation quantitative description:
The equipment investment of underground heat evaporation working medium:
K invest,geo＝e geo·P geo(1)
Biological fuel gas crosses hot working fluid equipment investment:
x b i o = ( h b i o - h g e o ) ( h b i o - h g e o ) + ( h g e o - h n , 1 ) - - - ( 2 )
Q b i o = P g e o &CenterDot; x b i o ( 1 - x b i o ) &CenterDot; &eta; b &times; &tau; a - - - ( 3 )
K invest,bio＝(Q bio/C bio,gas)·e bio,gas(4)
Generator set device is invested:
K invest,plant＝P net·e plant(5)
System equipment gross investment:
K invest＝K invest,bio+K invest,geo+K invest,plant(6)
Year biomass fuel cost:
K fuel＝(Q bio/C bio,gas)·e biomass(7)
Year operation expense:
K O&M＝P net·e O&M(8)
Year the accumulative total of generating electricity:
E net＝P net·τ a(9)
Cost of electricity-generating:
c r f = k d ( 1 + k d ) n ( 1 + k d ) n - 1 + k i n s u r a n c e - - - ( 11 )
Wherein, K invest, geothe equipment investment of geothermal power evaporation working medium, P geosolely thermal electric generator pool-size, e geothe equipment investment of unit capacity geothermal power evaporation working medium, K invest, biobiological fuel gas crosses hot working fluid equipment investment, x biobiomass utilization mark, h bioworking medium superheater outlet working medium enthalpy, h geoworking medium evaporator outlet working medium enthalpy, h n,lworking medium evaporator inlet working medium enthalpy, Q biobiological fuel gas crosses hot working fluid annual heat consumption, η bthe biological mass gas burnnig boiler thermal efficiency, τ aworking time in system year, C bio, gasbiological fuel gas calorific value, e bio, gasper unit volume biological fuel gas cost of production, K invest, plantgenerator set device is invested, P netsystem total installation of generating capacity, e plantunit capacity generator set device is invested, K investsystem equipment gross investment, K fuelyear accumulative biomass material cost, e biomassunit mass biomass material cost, K o & Myear operation expense, e o & Munit capacity generator set year operation expense, E netyear the accumulative total of generating electricity, LEC cost of electricity-generating, crf capital recovery factor, K insuranceannual premium rate, k dactual debts interest rate; N unit depreciation period;
Simultaneous formula (2), formula (3), formula (4), determine K invest, bio, then simultaneous formula (1), formula (5), formula (6), determine K invest, simultaneous formula (7), formula (8), formula (9), formula (10), formula (11) determine LEC.
Low temperature underground heat and biological fuel gas combined generating system in the one of embodiment, specific works process is: it is overheated that the saturated gaseous working medium of the gaseous working medium output terminal of working medium vaporizer 11 low temperature side enters working medium superheater 21 low temperature side, the overheated gaseous working medium of working medium superheater 21 low temperature side outlet enters prime mover 24 expansion work, prime mover 24 is vented sends into working fluid condenses device 26 condensation heat release, working medium storage tank 27 is stored in after being condensed into liquid refrigerant, liquid refrigerant in working medium storage tank 27 sends into working medium preheater 22 after being boosted by working medium booster pump 28, the saturated liquid refrigerant that working medium preheater 22 exports enters working medium vaporizer 11 low temperature side endothermic gasification, complete power cycle power generation process, the geothermal water that producing well 7 exports sends into working medium vaporizer 11 high temperature side after geothermal water treatment device purified treatment, heating pipe 18 in second is sent into by geothermal water recycle pump 12 by the working medium vaporizer 11 high temperature side export place hot water of heat absorption cooling, the geothermal water that in second, heating pipe 18 exports enters heating pipe 3 in first again, the geothermal water that in first, heating pipe 3 exports enters recharge well 8, geothermal water in recharge well 8 enters producing well 7 after absorbing the heat of underground heat storage 9, completes geothermal water circulation heat absorption, exothermic process, living beings 1 enter acidification hydrolization tank 2 and carry out sour cyclizing hydrolysis, organic acid in acidification hydrolization tank 2 sends into anaeroic digestor 16 by organic acid recycle pump 17, the aerogenesis of anaeroic digestor 16 enters gas holder 14 by the second combustion gas booster pump 15, and the natural pond liquid of anaeroic digestor 16 sends into acidification hydrolization tank 2 by acid cycle pump 29, natural pond slag in acidification hydrolization tank 2 sends into natural pond slag fermenting tub 5 by natural pond slag recycle pump 4, natural pond slag fermenting tub 5 first exports and exports natural pond fertilizer, the aerogenesis that natural pond slag fermenting tub 5 second exports sends into gas holder 14 by the first combustion gas booster pump 13, and the biological fuel gas that gas holder 14 exports enters burning in the gas burner 20 of gas fired boiler 23 and produces biomass flue gas.
Described anaeroic digestor filler module 19 is the attachment of anaerobic bacteria flora in anaeroic digestor 16, it is upper and lower, front and back, six faces, left and right are hollow out, organic acid is bottom-up flows through porous particle support 33 in anaeroic digestor filler module 19, porous particle support 33 is in cross arrangement, porous particle support 33 is embedded with porous particle 34, the anaerobic bacteria flora being attached to porous particle 34 surface fully contacts with organic acid, draw organic acid nutrient output biological fuel gas, porous particle 34 particle diameter is 5-10mm, spacing is 2-5mm, organic acid can free-flow in gap, strengthening organic acid Convective Heat Transfer, complete aerogenesis, the strengthening process of heat exchange.
Described geothermal water treatment device 10 is underground heat water purifying means, the geothermal water that geothermal well 7 exports enters moisture trap 41, the gas that moisture trap 41 first exports enters biological desulphurization tower 42 desulfurization process, the Purge gas 43 that biological desulphurization tower 42 exports is emptying, the geothermal water that moisture trap 41 second exports enters spiral-flow type desanding device 45 and carries out geothermal water desanding, geothermal water after spiral-flow type desanding device 45 exports desanding enters manganese sand tramp iron separator 46 and carries out deironing, the geothermal water of manganese sand tramp iron separator 46 outlet sends into adsorption tanks 48 by booster water pump 47, calcium ions and magnesium ions sorbent 49 in adsorption tanks 48 adsorbs geothermal water calcium ions and magnesium ions, the geothermal water that adsorption tanks 48 export enters the high temperature side of working medium vaporizer 11, complete geothermal water purification process.
Middle low temperature underground heat of the present invention and biological fuel gas combined generating system, with low-boiling point material, if ammonia, carbon dioxide and organic working medium etc. are working medium, in associating utilization, low temperature underground heat and biological fuel gas improve the initial conditions of power cycle prime mover, again to be heated anaerobic digestion process by the geothermal water after power circulating cooling and to improve factor of created gase, surmountable shortcoming like this is as follows: 1., cryogenically heat generating system working medium enthalpy drop is too small, and the thermal efficiency is very low; 2. under low ambient temperature condition, anaerobic digester system cannot run, and under normal temperature condition, anaerobic digester system factor of created gase is low; 3. living beings are if stalk etc. is without Processes For Effective Conversion, and discharged in burning dense smoke, pollution of atmosphere is serious.Middle low temperature underground heat, biological fuel gas associating energy supply, both improve power cycle working medium initial conditions, improve energy utilization rate, and a large amount of living beings of on-site elimination, decrease environmental pollution again.
Middle low temperature underground heat of the present invention and biological fuel gas combined generating system, in employing cryogenically energy heats gasification low boiling working fluid, recharge geothermal water heating with living beings be the anaerobic digester system of raw material to improve its factor of created gase, anaerobic digester system institute produces burn in the gas fired boiler high-temperature flue gas of generation of substance combustible gas and crosses hot gaseous low boiling working fluid.Geothermal power temperature range serial connection coupling that in working medium vaporizer and anaerobic digester system, heating pipe utilizes according to it is in aggregates, and realizes the cascade utilization of geothermal water heat, improves the utilization ratio of geothermal power; Anaerobic digester system adopts geothermal water heating, can realize hi-temp hi-effective aerogenesis, improve anaerobic digester system factor of created gase; Substance combustible gas that anaerobic digester system produces can improve prime mover initial conditions, increases prime mover group enthalpy drop, improves generating efficiency.
Working fluid condenses device 26 of the present invention comprises direct water supply water-cooled surfaces formula vapour condenser, wet cooling tower surface condenser, direct air condensed steam device, surface-type indirect air cooling vapour condenser, hybrid indirect air cooling vapour condenser, can according in factory site environment residing for low temperature underground heat and biological fuel gas combined generating system, comprise the number of water resources, the factors such as the height of ambient air temperature, factory site can adopt direct water supply water-cooled surfaces formula vapour condenser by the sea, wet cooling tower surface condenser can be adopted in many water area, inland, direct air condensed steam device can be adopted in the few water area of lack of water, surface-type indirect air cooling vapour condenser and hybrid indirect air cooling vapour condenser, the prime mover exhaust cooling technology that the employing of suiting measures to local conditions is different.
Anaeroic digestor filler module 19 of the present invention is a kind of anaerobic bacteria attachment integrated equipments, and first, porous particle 34 has rough surface, is conducive to anaerobic bacteria to be fixed on porous granulated carrier, improves anaerobic bacteria adhesive rate; Secondly, porous particle support 33 is staggered, and its outstanding advantage is, for the anaerobic bacteria of solidification provides wide breeding space, organic acid can be made fully to contact exchange with anaerobic bacteria, anaerobic bacteria group energy keeps good activity, improves proliferative speed and the reproductive number of anaerobic bacteria; Finally, porous particle 34 embeds according to fixed interval (FI) and arranges, anaerobic bacteria flora keeps certain space, unlikely adhesion is agglomerating, maintain anaerobic bacteria flora specific surface area to maximize, increase anaerobic bacteria quantity in per unit volume, add strong organic acid disturbance, strengthening organic acid convective mass transfer, heat transfer process, maintain the stable of diverse location organic acid temperature in whole anaeroic digestor with evenly.
Geothermal water treatment device 10 of the present invention is a set of geothermal water cleaning equipments, and hydrogen sulfide gas isolated by moisture trap 41, the corrosion of the removal of hydrogen sulfide pipeline such as hot water conveying pipe, working medium vaporizer, interior heating pipe over the ground; Spiral-flow type desanding device 45 removably hot water, containing sand, prevents gravel from causing obstruction in geothermal water conveyance conduit Valves and Fittings place deposition, jeopardizes geothermal system safe operation; Manganese sand tramp iron separator 46 goes middle low temperature except iron excessive in geothermal water, prevents geothermal water delivery pipe from producing deposition of iron thing and piles up, cause line clogging; Calcium ions and magnesium ions sorbent 49 in adsorption tanks 48 effectively can adsorb the calcium ions and magnesium ions in geothermal water, prevents this magnesium ion to separate out fouling in working medium vaporizer, heating pipe, reduces temperature conductivity.
Middle low temperature underground heat of the present invention and biological fuel gas combined generating system cost of electricity-generating computational methods, according to system architecture characteristic, be mainly divided into underground heat to evaporate working medium part by it, biomass anaerobic digestion aerogenesis crosses hot working fluid part and generator set device part.In when cryogenically thermal source is more stable, working medium superheat temperature is the tightst with associating of systems generate electricity cost, and show as: (1) working medium superheat temperature is higher, the biological fuel gas needed for system is more, and then anaerobic digester system scale is larger, initial outlay is larger; (2) working medium superheat temperature is higher, and systems generate electricity unit capacity is larger, and generator set device initial outlay is higher; (3) working medium superheat temperature is higher, and needed for system, biological fuel gas is more, and mean that required biomass material is more, then system fuel cost is higher; (4) working medium superheat temperature is higher, and the year the accumulative total of generating electricity of system is larger, and finally, systems generate electricity cost is that the overall merit of above many influence factors compares.
Middle low temperature underground heat of the present invention and biological fuel gas combined generating system, once ammonia was adopted to be power cycle working medium, 150 DEG C of geothermal water are adopted to be ammonia working medium gasification thermal source, ammonia gasification temperature 90 DEG C, pressure 5.1Mpa, the design cooling water temperature of prime mover exhaust cooling system 15 DEG C, initial temperature differences 16 DEG C, then can be calculated low temperature underground heat and biological fuel gas combined generating system thermal efficiency of cycle under the different working medium degree of superheat to change as shown in Figure 4, gross output and energy-photoelectric transformation efficiency change as shown in Figure 5, year the accumulative total of generating electricity and cost of electricity-generating variation tendency are as shown in Figure 6.When working medium is increased to overheated 120 DEG C by overheated 0 DEG C, within its year, the accumulative total of generating electricity can by 82.5 × 10 6kWh is increased to 342.1 × 10 6kWh, cost of electricity-generating is then reduced to 0.0754 $/kWh by 0.1055 $/kWh, year, the accumulative total of generating electricity improve 314.7%, and cost of electricity-generating reduces 28.5%, thus significantly improves the heat-economy of middle low temperature underground heat and biological fuel gas combined generating system.

Claims (5)

1. low temperature underground heat and biological fuel gas combined generating system in one kind, it is characterized in that: it comprises working medium vaporizer (11) low temperature side gaseous working medium output terminal and is communicated with working medium superheater (21) the low temperature side input end of gas fired boiler (23), working medium superheater (21) the low temperature side output terminal of gas fired boiler (23) is communicated with prime mover (24) input end, prime mover (24) is connected with generator (25), prime mover (24) output terminal is communicated with working fluid condenses device (26) input end, working fluid condenses device (26) output terminal is communicated with working medium storage tank (27) input end, working medium storage tank (27) output terminal is communicated with working medium preheater (22) the low temperature side input end of gas fired boiler (23) by working medium booster pump (28), working medium preheater (22) the low temperature side output terminal of gas fired boiler (23) is communicated with working medium vaporizer (11) low temperature side liquid refrigerant input end, producing well (7) output terminal is communicated with geothermal water treatment device (10) input end, geothermal water treatment device (10) output terminal is communicated with working medium vaporizer (11) high temperature side geothermal water entrance, the outlet of working medium vaporizer (11) high temperature side geothermal water is communicated with heating pipe in second (18) input end by geothermal water recycle pump (12), in second, heating pipe (18) output terminal is communicated with heating pipe in first (3) input end, in first, heating pipe (3) output terminal is communicated with recharge well (8) input end, recharge well (8) output terminal is communicated with producing well (7) input end by underground heat storage (9), living beings (1) are communicated with acidification hydrolization tank (2) first input end, acidification hydrolization tank (2) first output terminal is communicated with natural pond slag fermenting tub (5) input end by natural pond slag recycle pump (4), natural pond slag fermenting tub (5) first output terminal is communicated with natural pond fertilizer (6), and natural pond slag fermenting tub (5) second output terminal is communicated with gas holder (14) first input end by the first combustion gas booster pump (13), acidification hydrolization tank (2) second output terminal is communicated with anaeroic digestor (16) input end by organic acid recycle pump (17), anaeroic digestor (16) first output terminal is communicated with acidification hydrolization tank (2) second input end by acid cycle pump (29), anaeroic digestor (16) second output terminal is communicated with gas holder (14) second input end by the second combustion gas booster pump (15), and gas holder (14) output terminal is communicated with the burner (20) of gas fired boiler (23), anaeroic digestor filler module (19) is placed in anaeroic digestor (16).
2. low temperature underground heat and biological fuel gas combined generating system in one according to claim 1, is characterized in that: described working fluid condenses device (26) comprises direct water supply water-cooled surfaces formula vapour condenser, wet cooling tower surface condenser, direct air condensed steam device, surface-type indirect air cooling vapour condenser, hybrid indirect air cooling vapour condenser.
3. low temperature underground heat and biological fuel gas combined generating system in one according to claim 1, it is characterized in that: described anaeroic digestor filler module (19) comprises tube sheet (31), frame support (30) and porous particle arm (33), tube sheet (31) is drilled with the plate hole (32) of cross arrangement, porous particle support (33) is inserted in plate hole (32), porous particle (34) is embedded with under porous particle support (33), tube sheet (31) corner is combined into up and down by frame support (30), the anaeroic digestor filler module (19) that front and back are penetrating, porous particle (34) particle diameter is 5-10mm, porous particle (34) spacing is 2-5mm, porous particle support (33) below diameter 0.5mm.
4. low temperature underground heat and biological fuel gas combined generating system in one according to claim 1, it is characterized in that: described geothermal water treatment device (10) comprises moisture trap (41) first output terminal and is communicated with biological desulphurization tower (42) input end, and biological desulphurization tower (42) output terminal is communicated with Purge gas (43) delivery end; Moisture trap (41) second output terminal is communicated with spiral-flow type desanding device (45) input end, spiral-flow type desanding device (45) output terminal is communicated with manganese sand tramp iron separator (46) input end, manganese sand tramp iron separator (46) output terminal is communicated with adsorption tanks (48) input end by booster water pump (47), is provided with calcium ions and magnesium ions sorbent (49) in adsorption tanks (48).
5. low temperature underground heat and biological fuel gas combined generating system cost of electricity-generating computational methods in one according to claim 1, it is characterized in that: mainly comprise underground heat evaporation working medium equipment investment, biological fuel gas cross hot working fluid equipment investment, generator set device investment, biomass material cost and operation expense, whole system cost of electricity-generating simple calculating method is by following set of equation quantitative description:
The equipment investment of underground heat evaporation working medium:
K invest,geo＝e geo·P geo(1)
Biological fuel gas crosses hot working fluid equipment investment:
x b i o = ( h b i o - h g e o ) ( h b i o - h g e o ) + ( h g e o - h n , 1 ) - - - ( 2 )
Q b i o = P g e o &CenterDot; x b i o ( 1 - x b i o ) &CenterDot; &eta; b &times; &tau; a - - - ( 3 )
K invest,bio＝(Q bio/C bio,gas)·e bio,gas(4)
Generator set device is invested:
K invest,plant＝P net·e plant(5)
System equipment gross investment:
K invest＝K invest,bio+K invest,geo+K invest,plant(6)
Year biomass fuel cost:
K fuel＝(Q bio/C bio,gas)·e biomass(7)
Year operation expense:
K O&M＝P net·e O&M(8)
Year the accumulative total of generating electricity:
E net＝P net·τ a(9)
Cost of electricity-generating:
c r f = k d ( 1 + k d ) n ( 1 + k d ) n - 1 + k i n s u r a n c e - - - ( 11 )
Wherein, K invest, geothe equipment investment of geothermal power evaporation working medium, P geosolely thermal electric generator pool-size, e geothe equipment investment of unit capacity geothermal power evaporation working medium, K invest, biobiological fuel gas crosses hot working fluid equipment investment, x biobiomass utilization mark, h bioworking medium superheater outlet working medium enthalpy, h geoworking medium evaporator outlet working medium enthalpy, h n,lworking medium evaporator inlet working medium enthalpy, Q biobiological fuel gas crosses hot working fluid annual heat consumption, η bthe biological mass gas burnnig boiler thermal efficiency, τ aworking time in system year, C bio, gasbiological fuel gas calorific value, e bio, gasper unit volume biological fuel gas cost of production, K invest, plantgenerator set device is invested, P netsystem total installation of generating capacity, e plantunit capacity generator set device is invested, K investsystem equipment gross investment, K fuelyear accumulative biomass material cost, e biomassunit mass biomass material cost, K o & Myear operation expense, e o & Munit capacity generator set year operation expense, E netyear the accumulative total of generating electricity, LEC cost of electricity-generating, crf capital recovery factor, K insuranceannual premium rate, k dactual debts interest rate, n unit depreciation period;
Simultaneous formula (2), formula (3), formula (4) determine K invest, bio, then simultaneous formula (1), formula (5), formula (6) determine K invest, simultaneous formula (7), formula (8), formula (9), formula (10), formula (11) determine LEC.
CN201510664898.7A 2015-10-14 2015-10-14 Middle low temperature underground heat and biological fuel gas combined generating system and cost of electricity-generating computational methods Active CN105221363B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510664898.7A CN105221363B (en) 2015-10-14 2015-10-14 Middle low temperature underground heat and biological fuel gas combined generating system and cost of electricity-generating computational methods

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510664898.7A CN105221363B (en) 2015-10-14 2015-10-14 Middle low temperature underground heat and biological fuel gas combined generating system and cost of electricity-generating computational methods

Publications (2)

Publication Number Publication Date
CN105221363A true CN105221363A (en) 2016-01-06
CN105221363B CN105221363B (en) 2017-12-19

Family

ID=54990551

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510664898.7A Active CN105221363B (en) 2015-10-14 2015-10-14 Middle low temperature underground heat and biological fuel gas combined generating system and cost of electricity-generating computational methods

Country Status (1)

Country Link
CN (1) CN105221363B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106621474A (en) * 2016-12-12 2017-05-10 胜利油田森诺胜利工程有限公司 Technology for removing combustible gas and hydrogen sulfide from geothermal water
CN106931423A (en) * 2017-04-24 2017-07-07 刘崇江 Boiler replenishing water is preheated and reparation technology system
CN107557293A (en) * 2017-10-07 2018-01-09 东北电力大学 Electromagnetism reinforced anaerobic digests gas production system and its regulation and control method
CN110219709A (en) * 2019-06-01 2019-09-10 陈明晖 A kind of engine
CN111370071A (en) * 2020-03-03 2020-07-03 重庆市环卫集团有限公司 Method for recycling anaerobic biogas slurry of kitchen waste
CN111574265A (en) * 2020-05-28 2020-08-25 丁亦丰 Agricultural waste straw fermenting device based on shallow geothermal energy supply
CN112459983A (en) * 2020-11-24 2021-03-09 清华四川能源互联网研究院 Comprehensive energy supply system and method containing compressed air energy storage
CN112781764A (en) * 2020-12-31 2021-05-11 天津大学 Low-temperature semiconductor thermoelectric generator power generation efficiency testing device and testing method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090165456A1 (en) * 2005-11-29 2009-07-02 Noboru Masada Heat Cycle System and Composite Heat Cycle Electric Power Generation System
JP2014190285A (en) * 2013-03-28 2014-10-06 Taiyo Nippon Sanso Corp Binary power generation device operation method
CN203925627U (en) * 2014-07-03 2014-11-05 上海脉慧能源科技有限公司 Low temperature organic Rankine cycle waste heat generating system
JP2014227995A (en) * 2013-05-24 2014-12-08 畑中　武史 Geothermal power generation method and device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090165456A1 (en) * 2005-11-29 2009-07-02 Noboru Masada Heat Cycle System and Composite Heat Cycle Electric Power Generation System
JP2014190285A (en) * 2013-03-28 2014-10-06 Taiyo Nippon Sanso Corp Binary power generation device operation method
JP2014227995A (en) * 2013-05-24 2014-12-08 畑中　武史 Geothermal power generation method and device
CN203925627U (en) * 2014-07-03 2014-11-05 上海脉慧能源科技有限公司 Low temperature organic Rankine cycle waste heat generating system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106621474A (en) * 2016-12-12 2017-05-10 胜利油田森诺胜利工程有限公司 Technology for removing combustible gas and hydrogen sulfide from geothermal water
CN106931423A (en) * 2017-04-24 2017-07-07 刘崇江 Boiler replenishing water is preheated and reparation technology system
CN107557293A (en) * 2017-10-07 2018-01-09 东北电力大学 Electromagnetism reinforced anaerobic digests gas production system and its regulation and control method
CN110219709A (en) * 2019-06-01 2019-09-10 陈明晖 A kind of engine
CN111370071A (en) * 2020-03-03 2020-07-03 重庆市环卫集团有限公司 Method for recycling anaerobic biogas slurry of kitchen waste
CN111370071B (en) * 2020-03-03 2023-03-28 重庆市环卫集团有限公司 Method for recycling anaerobic biogas slurry of kitchen waste
CN111574265A (en) * 2020-05-28 2020-08-25 丁亦丰 Agricultural waste straw fermenting device based on shallow geothermal energy supply
CN112459983A (en) * 2020-11-24 2021-03-09 清华四川能源互联网研究院 Comprehensive energy supply system and method containing compressed air energy storage
CN112459983B (en) * 2020-11-24 2022-03-01 清华四川能源互联网研究院 Comprehensive energy supply system and method containing compressed air energy storage
CN112781764A (en) * 2020-12-31 2021-05-11 天津大学 Low-temperature semiconductor thermoelectric generator power generation efficiency testing device and testing method

Also Published As

Publication number Publication date
CN105221363B (en) 2017-12-19

Similar Documents

Publication Publication Date Title
CN105221363B (en) Middle low temperature underground heat and biological fuel gas combined generating system and cost of electricity-generating computational methods
Aboelmaaref et al. Hybrid solar desalination systems driven by parabolic trough and parabolic dish CSP technologies: Technology categorization, thermodynamic performance and economical assessment
Zhang et al. Application of solar energy in water treatment processes: A review
Elminshawy et al. Development of a desalination system driven by solar energy and low grade waste heat
Chen et al. On the thermodynamic analysis of a novel low-grade heat driven desalination system
US20030062270A1 (en) Method and apparatus for sustainable energy and materials
CN101708871B (en) Gradient preheating multistage evaporation-type seawater desalination power generation system
CN202132193U (en) Solar energy and biomass complementary power generating system
KR101194168B1 (en) Heating method and heating plant for agricultural facility using biogas and regenerator
Amiri et al. Biomass as a renewable energy source for water desalination: a review
CN106287903A (en) North of china in winter is provided multiple forms of energy to complement each other heat pump heating system
Cardemil et al. Integration schemes for hybrid and polygeneration concentrated solar power plants
Kaabinejadian et al. Design, modeling, and thermo-economic optimization of an innovative continuous solar-powered hybrid desalination plant integrated with latent heat thermal energy storage
CN101439890A (en) Method and apparatus for concentrating, combusting high concentrated organic wastewater and generating power
Tian et al. Techno-economic case study of applying heat recovery and CO2 capture systems on a gas turbine power plant; 4E analysis
Yang et al. Optimization and analysis of combined heat and water production system based on a coal-fired power plant
Ettouney et al. Solar desalination: a challenge for sustainable fresh water in the 21 st century
CN203906087U (en) Power generation system utilizing fermented straws
CN202643608U (en) Polyester esterification waste heat utilization device
CN100458280C (en) Superheat adjustable self-purifying steam generation method by using valley electricity to store heat
El Ibrahimi et al. Hybrid solar-heated anaerobic digestion system for electricity and heat cogeneration
Eldredge et al. ENHANCING THE POTENTIAL OF SOLAR-ASSISTED PYROLYSIS OF SEWER SLUDGE FOR CO 2 EMISSION REDUCTION AND ENERGY SAVING
CN112856563A (en) Geothermal, solar and biogas combined power generation and heating system
Amiria et al. Simulation of small-scale thermal water desalination using biomass energy
Rahimi-Ahar et al. A perspective of thermal type desalination: Technology, current development and thermodynamics analysis

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CB03 Change of inventor or designer information

Inventor after: Cao Shengxian

Inventor after: Zhao Bo

Inventor after: Yang Shanrang

Inventor after: Wang Gong

Inventor after: Liu Zhichao

Inventor after: Li Da

Inventor before: Zhao Bo

Inventor before: Yang Shanrang

Inventor before: Cao Shengxian

Inventor before: Wang Gong

Inventor before: Liu Zhichao

Inventor before: Li Da

CB03 Change of inventor or designer information