CN103899371A - Poly-generation system using biomass and solar energy for making methyl alcohol and generating power - Google Patents
Poly-generation system using biomass and solar energy for making methyl alcohol and generating power Download PDFInfo
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- CN103899371A CN103899371A CN201410097963.8A CN201410097963A CN103899371A CN 103899371 A CN103899371 A CN 103899371A CN 201410097963 A CN201410097963 A CN 201410097963A CN 103899371 A CN103899371 A CN 103899371A
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- 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
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- 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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P20/50—Improvements relating to the production of bulk chemicals
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Abstract
The invention discloses a poly-generation system using biomass and solar energy for making methyl alcohol and generating power. The poly-generation system comprises a solar energy heat collecting reaction subsystem, a biomass gasification subsystem, a methyl alcohol synthesis subsystem and a power generation subsystem. Main devices comprise a flat plate type solar energy drying device, a groove type solar thermal collector, a steam generator, a tower type solar energy reflection mirror field, a tower type high-temperature gasification reactor, a gas temperature reduction device, a gas condensation purifying device, a compressor set, a methyl alcohol synthesis tower, a heat exchanger, a gas-liquid temperature reduction device, a flash tank, a separator, a mixer, rectifying tower, a methyl alcohol, a combustion chamber, a compressor, a gas turbine, a waste heat boiler, a steam turbine, a condenser, a water feed pump and a power generator. By the utilization of the poly-generation system, solar energy is converted into chemical energy, the problems that the storage of solar energy is difficult, and stability of renewable energy source delivering is poor are solved, and meanwhile the effective utilization efficiency of the biomass is improved.
Description
Technical field
The present invention relates to multiple renewable energy sources complementation and utilize technical field, especially a kind of polygenerations systeme that utilizes living beings and solar energy to produce methyl alcohol and generating.
Background technique
Under the background of rapid economic development, the mankind are increasing to the demand of the energy, and the fossil fuels such as coal, oil and natural gas consume in a large number, the sharply reduction of being not only energy resources reserves thereupon bringing, also serious environmental pollution will be produced, especially a large amount of CO
2isothermal chamber gas purging will have influence on the global ecological balance.
The total output of primary energy of China rises to 33.19 hundred million tons of standard coals of 2012 from 13.51 hundred million tons of standard coals of 2000, amplification reaches 145.67%, year primary energy consumption amount is also risen to 36.17 hundred million tons of standard coals of 2012 by 14.55 hundred million tons of standard coals of 2000, total amount has been turned over one times, has increased by 148.59%.Especially be pointed out that, to 2012 China dependence on foreign countries for oil reached 56.4%.In the face of growing demand for energy, in improving energy utilization rate, also should make full use of renewable energy sources and be substituted.
On the other hand, the solar energy resources of China is very abundant, and a year solar radiation value is about 1050～2450kWh (m
2a), be greater than 1050kWh (m
2a) area accounts for the more than 96% of area.The annual mean day solar radiation quantity of China is 180W/m
2, it is low that the distribution trend of average day solar radiation quantity shows as Xi Gaodong.The west area such as in Tibet, Qinghai and the Xinjiang of China, solar energy resources is very abundant, and year sunshine duration more than 3000 hours, belongs to one of abundant area of world's solar energy resources especially.Worldwide, the Demonstration Station of existing multiple employing slot types and tower type solar generation technology is put into commercial operation at present.Comparatively speaking, the energy density of solar energy is low and exist round the clock and seasonal variety, and this cannot ensure the lasting and stable output of solar energy resources, need be by certain energy storage device.
Meanwhile, the biomass straw Annual output of China is 8.42 hundred million tons, wherein can collect utilization and reach 6.86 hundred million tons, utilizes prospect boundless.The technological means of utilizing that current living beings are made energy purposes mainly comprises burning, pyrolysis and gasification, wherein can be produced and is rich in H by gasification
2with the synthetic gas of CO, can combine to form overall biomass gasification burning one steam combined cycle system (BIGCC) with efficient fuel gas generation technology.Existing biomass gasification technology mainly adopts the mode of spontaneous combustion to provide reaction needed heat.Select air or wet air as gasifying agent, by the oxygen composition and the heat of living beings generation oxidation reaction for gasifying and providing sufficient that contain in air, the generation heat that also can utilize maintains reaction temperature higher in gasification reactor, simultaneously the CO of water vapour and generation
2to give birth to reduction reaction with biomass fermentation, finally generate H
2with compositions such as CO.But still there are a lot of defects in this type of biomass gasification technology, wherein the needed heat of gasification reaction provides by biomass burning, provide the biological quality of reaction heat to account for 1/3 of the original input quantity of living beings, directly cause the decline of gas production of gasifying, and produce CO because the oxidation reaction existing makes gasification
2measure higherly, the impurity simultaneously producing because of burning is also combined to gas by contamination gas, and the gas purification load in later stage is increased.The needed heat source temperature of gasification of biomass only needs 850 DEG C of left and right, and but directly the burn living beings chemical energy of high-quality of conventional gasification technology provides gasification thermal source, has caused the not counterpart of energy grade, the real object of making the best use of everything that realizes.
Compared with fossil fuel, solar energy and living beings possess reserves greatly and use the plurality of advantages such as clean, utilize this class renewable energy sources can effectively alleviate the problems such as increasingly serious environmental pollution, simultaneously solar energy, for living beings are dry and the flow process such as gasification provides the thermal source of phase matching temperature with it, has reduced energy grade loss.
Have an eye on the future, energy resource supply is the future development towards efficient and clean, simultaneously along with the improving and promoting of the clean and effective such as fuel cell and hydrogen energy automobile energy utilization technology, for the demand of all kinds of clean fuels such as hydrogen and methyl alcohol also by rapid growth.Simple existing fossil fuel gasification and the gas renormalizing technology of relying on, not only can not meet following energy demand, does not also meet energy sustainable development direction simultaneously.Can effectively alleviate the contradiction between growing energy demand and limited fossil energy reserves by the abundant renewable energy sources such as solar energy and living beings, but the reliable and stable output that how to realize renewable energy sources becomes current problem demanding prompt solution.
Summary of the invention
(1) technical problem that will solve
In view of this, main purpose of the present invention is to provide a kind of polygenerations systeme that utilizes living beings and solar energy to produce methyl alcohol and generating, to realize solar energy to chemical transformation of energy, and the energy storage difficulty that solves current solar energy is large and renewable energy sources is carried the problems such as poor stability, also improves the effective rate of utilization of living beings simultaneously.
(2) technological scheme
For achieving the above object, the invention provides a kind of polygenerations systeme that utilizes living beings and solar energy to produce methyl alcohol and generating, this polygenerations systeme comprises:
Solar energy heating reaction subtense angle, comprise plate type solar exsiccator 1, trough type solar heat-collector 2, steam generator 3 and tower type solar reflector field 4, wherein, plate type solar exsiccator 1 utilizes the solar energy absorbing to be dried the living beings S1 entering wherein, and dried living beings S1 is sent into the tower high temperature gasification reactor 5 of gasification of biomass subtense angle; The hot junction of steam generator 3 is imported and exported with trough type solar heat-collector 2 is closed and is connected, and the water S2 that utilizes the heat of trough type solar heat-collector 2 to make to enter in steam generator 3 becomes steam, and steam is sent into tower high temperature gasification reactor 5; Tower type solar reflector field 4 is arranged in tower high temperature gasification reactor 5 around, as the thermal source of tower high temperature gasification reactor 5 high-temperature gasification reactions;
Gasification of biomass subtense angle, comprise tower high temperature gasification reactor 5, gas desuperheater 6 and gas condensation purifier 7, wherein, tower high temperature gasification reactor 5 utilizes tower type solar reflector field 4 to reflect and focus on and obtains high temperature heat source, make to enter the steam generation high-temperature gasification reaction that dried living beings S1 wherein and steam generator 3 generate and produce high-temperature gas, first this high-temperature gas is undertaken cooling by gas desuperheater 6, and deliver to condensation of gas purifier 7 and carry out follow-up moisture separation and gas purification, treated gas is sent to the compressor bank 8 of methyl alcohol synthon system,
Methyl alcohol synthon system, comprise compressor bank 8, methyl alcohol synthetic reactor 9, heat exchanger 10, gas-liquid desuperheater 11, flash drum 12, separator 13, mixer 14, rectifying column 15 and methanol tank 16, wherein, compressor bank 8 is delivered in methyl alcohol synthetic reactor 9 after the gas entering being carried out to multistage pressurization and utilizing heat exchanger 10 to complete preheating, the methyl alcohol producing after reaction in methyl alcohol synthetic reactor 9 and the gas-liquid mixture of unreacting gas are lowered the temperature through heat exchanger 10 and gas-liquid desuperheater 11 successively, gas-liquid mixture after cooling utilizes flash drum 12 to carry out gas-liquid separation, isolated liquid methanol is delivered in methanol tank 16 after rectifying column 15 is purified, isolated gas utilizes separator 13 to adjust and is separated into two strands of gases, one gas circulation is returned to compressor bank 8 and proceeds Methanol Synthesis Process, another strand of gas burns together with the isolated gas componant of rectifying column 15 in mixer 14 is sent into the firing chamber 17 of power generation sub-system,
Power generation sub-system, comprise firing chamber 17, compressor 18, combustion gas turbine 19, exhaust heat boiler 20, steam turbine 21, condenser 22, feed water pump 23 and generator 24, wherein, air S3 delivers to firing chamber 17 so that oxygen composition to be provided after compressor 18 compressions, the high-temperature flue gas producing in firing chamber 17 promotes combustion gas turbine 19 and does work, the flue gas that combustion gas turbine 19 discharges is sent to be produced Steam Actuation steam turbine 21 in exhaust heat boiler 20 and does work, exhaust heat boiler 20, steam turbine 21, condenser 22, feed water pump 23 circulates with the Rankine acting of generator 24 completes, finally utilize generator 24 to produce electric energy.
In such scheme, described plate type solar exsiccator 1 directly utilizes air as medium dried biomass S1, and water constituent contained living beings S1 is all removed.
In such scheme, described trough type solar heat-collector 2, using conduction oil as heat absorption working medium, and utilizes solar radiant energy to heat water S2 by steam generator 3, makes it be converted into saturated vapour.
In such scheme, described tower high temperature gasification reactor 5 carrys out focused solar energy by being arranged in its tower reflector field 4 around, so that high-temperature gasification heat source for reaction to be provided.
In such scheme, described gas desuperheater 6 and described methyl alcohol synthetic reactor 9 all will discharge a large amount of heats, and this heat is further introduced in power generation sub-system by the form of heated feed water.
In such scheme, described methyl alcohol synthetic reactor 9 export logistics utilize heat exchanger 10 by sensible heat transfer to entrance logistics to improve methyl alcohol synthetic ratio, and continue to deliver to gas-liquid desuperheater 11 and be beneficial to follow-up gas-liquid separation, utilize the sensible heat that discharges to provide middle low temperature boiling hot source again for rectifying column 15 simultaneously.
In such scheme, described flash drum 12 is for separating of gas not synthetic in methyl alcohol synthetic reactor 9, and these gases are separated into two bursts of sub-logistics of gas by described separator 13, delivers to respectively compressor bank 8 and power generation sub-system.
In such scheme, this polygenerations systeme is recently realized the output production capacity of methyl alcohol and electric energy and is adjusted and distribute by adjusting the unreacting gas circulation of separator 13.
(3) beneficial effect
Can find out from technique scheme, the present invention has following beneficial effect:
1, the polygenerations systeme that utilizes living beings and solar energy to produce methyl alcohol and generating provided by the invention, using energy source mechanism based on " temperature counterpart; cascade utilization " completes dry, gasification and the production of steam process of living beings by different solar heat collectors, heat energy utilization situation that can optimization system, improves the overall thermal efficiency and reduces the investment of equipment of system.
2, the polygenerations systeme that utilizes living beings and solar energy to produce methyl alcohol and generating provided by the invention, use solar energy to provide pyroreaction thermal source for biological respinse, reduce the oxidizing fire amount of living beings, improve the effective rate of utilization of living beings, the gas yield of gasification reaction will significantly increase, comparatively speaking the CO in gas
2component also will significantly reduce, and improve the degree of purity of gas simultaneously because there is not combustion reaction in reactor, and this purifies burden by reducing follow-up gas purification.
3, the polygenerations systeme that utilizes living beings and solar energy to produce methyl alcohol and generating provided by the invention, the product of system mainly comprises methyl alcohol and electric energy, by changing into the high and clean gaseous fuel chemical energy of quality by thering is intermittence and dispersed solar energy, the formal transformation of not only having realized solar energy is beneficial to store and transmission, has also realized the quality-improving of living beings chemical energy simultaneously.
4, the polygenerations systeme that utilizes living beings and solar energy to produce methyl alcohol and generating provided by the invention, it is the Green System of a set of environmental protection and energy saving, take full advantage of high-temperature gas sensible heat and the synthetic thermal discharge of methyl alcohol that gasification produces, in the production run process of simultaneity factor, pollute few energy consumption low, and consumption renewable energy sources, the methyl alcohol of simultaneously producing is also a kind of clean liquid fuel.
5, the polygenerations systeme that utilizes living beings and solar energy to produce methyl alcohol and generating provided by the invention, the product of system mainly comprises methyl alcohol and electric energy, realize the variation of product output, avoid causing system effectiveness to decline for single pursuit compared with high methanol output, can realize by modes such as the water vapour flows of adjustment unreacting gas cycle ratio, gasification reaction temperature and input the adjustment of each product output, meeting consumers' demand better simultaneously.
Brief description of the drawings
Fig. 1 produces the structural representation of the polygenerations systeme of methyl alcohol and generating according to utilize living beings and the solar energy of the embodiment of the present invention.
In Fig. 1, the reference character of each parts is: 1-plate type solar exsiccator, 2-trough type solar heat-collector, 3-steam generator, 4 tower type solar reflector fields, 5-tower high temperature gasification reactor, 6-gas desuperheater, 7-condensation of gas purifier, 8-compressor bank, 9-methyl alcohol synthetic reactor, 10-heat exchanger, 11-gas-liquid desuperheater, 12-flash drum, 13-separator, 14-mixer, 15-rectifying column, 16-methanol tank, 17-firing chamber, 18-compressor, 19-combustion gas turbine, 20-exhaust heat boiler, 21-steam turbine, 22-condenser, 23-feed water pump, 24-generator, S1-living beings, S2-water, S3-air, S4-flue gas.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
Fig. 1 is the structural representation that utilizes living beings and solar energy to produce the polygenerations systeme of methyl alcohol and generating provided by the invention, and this system comprises solar energy heating reaction subtense angle, gasification of biomass subtense angle, methyl alcohol synthon system and power generation sub-system, wherein:
Solar energy heating reaction subtense angle comprises plate type solar exsiccator 1, trough type solar heat-collector 2, steam generator 3 and tower type solar reflector field 4, wherein, plate type solar exsiccator 1 utilizes the solar energy absorbing to be dried the living beings S1 entering wherein, and dried living beings S1 is sent into the tower high temperature gasification reactor 5 of gasification of biomass subtense angle; The hot junction of steam generator 3 is imported and exported with trough type solar heat-collector 2 is closed and is connected, and the water S2 that utilizes the heat of trough type solar heat-collector 2 to make to enter in steam generator 3 becomes steam, and steam is sent into tower high temperature gasification reactor 5; Tower type solar reflector field 4 is arranged in tower high temperature gasification reactor 5 around, as the thermal source of tower high temperature gasification reactor 5 high-temperature gasification reactions.
Gasification of biomass subtense angle comprises tower high temperature gasification reactor 5, gas desuperheater 6 and gas condensation purifier 7, wherein, tower high temperature gasification reactor 5 utilizes tower type solar reflector field 4 to reflect and focus on and obtains high temperature heat source, make to enter the steam generation high-temperature gasification reaction that dried living beings S1 wherein and steam generator 3 generate and produce high-temperature gas, first this high-temperature gas is undertaken cooling by gas desuperheater 6, and deliver to condensation of gas purifier 7 and carry out follow-up moisture separation and gas purification, treated gas is sent to the compressor bank 8 of methyl alcohol synthon system.
Methyl alcohol synthon system comprises compressor bank 8, methyl alcohol synthetic reactor 9, heat exchanger 10, gas-liquid desuperheater 11, flash drum 12, separator 13, mixer 14, rectifying column 15 and methanol tank 16, wherein, compressor bank 8 is delivered in methyl alcohol synthetic reactor 9 after the gas entering being carried out to multistage pressurization and utilizing heat exchanger 10 to complete preheating, the methyl alcohol producing after reaction in methyl alcohol synthetic reactor 9 and the gas-liquid mixture of unreacting gas are lowered the temperature through heat exchanger 10 and gas-liquid desuperheater 11 successively, gas-liquid mixture after cooling utilizes flash drum 12 to carry out gas-liquid separation, isolated liquid methanol is delivered in methanol tank 16 after rectifying column 15 is purified, isolated gas utilizes separator 13 to adjust and is separated into two strands of gases, one gas circulation is returned to compressor bank 8 and proceeds Methanol Synthesis Process, another strand of gas burns together with the isolated gas componant of rectifying column 15 in mixer 14 is sent into the firing chamber 17 of power generation sub-system.
Power generation sub-system comprises firing chamber 17, compressor 18, combustion gas turbine 19, exhaust heat boiler 20, steam turbine 21, condenser 22, feed water pump 23 and generator 24, wherein, air S3 delivers to firing chamber 17 so that oxygen composition to be provided after compressor 18 compressions, the high-temperature flue gas producing in firing chamber 17 promotes combustion gas turbine 19 and does work, the flue gas that combustion gas turbine 19 discharges is sent to be produced Steam Actuation steam turbine 21 in exhaust heat boiler 20 and does work, exhaust heat boiler 20, steam turbine 21, condenser 22, feed water pump 23 circulates with the Rankine acting of generator 24 completes, finally utilize generator 24 to produce electric energy.
Wherein, plate type solar exsiccator 1 directly utilizes air as medium dried biomass S1, and water constituent contained living beings S1 is all removed.Trough type solar heat-collector 2, using conduction oil as heat absorption working medium, and utilizes solar radiant energy to heat water S2 by steam generator 3, makes it be converted into saturated vapour.Tower high temperature gasification reactor 5 carrys out focused solar energy by being arranged in its tower reflector field 4 around, so that high-temperature gasification heat source for reaction to be provided.Gas desuperheater 6 and described methyl alcohol synthetic reactor 9 all will discharge a large amount of heats, and this heat is further introduced in power generation sub-system by the form of heated feed water.Methyl alcohol synthetic reactor 9 export logistics utilize heat exchanger 10 by sensible heat transfer to entrance logistics to improve methyl alcohol synthetic ratio, and continue to deliver to gas-liquid desuperheater 11 and be beneficial to follow-up gas-liquid separation, utilize the sensible heat that discharges to provide middle low temperature boiling hot source again for rectifying column 15 simultaneously.Flash drum 12 is for separating of gas not synthetic in methyl alcohol synthetic reactor 9, and these gases are separated into two bursts of sub-logistics of gas by described separator 13, delivers to respectively compressor bank 8 and power generation sub-system.This polygenerations systeme is recently realized the output production capacity of methyl alcohol and electric energy and is adjusted and distribute by adjusting the unreacting gas circulation of separator 13.
In Fig. 1, living beings S1 is connected with plate type solar exsiccator 1 entrance, the hot junction of steam generator 3 is connected with trough type solar heat-collector 2 is closed, water S2 is connected with the cold junction entrance of steam generator 3, 1 outlet of plate type solar exsiccator is all connected with tower high temperature gasification reactor 5 entrances with the cold side outlet of steam generator 3, the outlet of tower high temperature gasification reactor 5 successively with gas desuperheater 6, condensation of gas purifier 7 connects and is connected with compressor bank 8, compressor bank 8 is connected with methyl alcohol synthetic reactor 9 through heat exchanger 10, methyl alcohol synthetic reactor 9 exports successively and heat exchanger 10, gas-liquid desuperheater 11 is connected with flash drum 12, the liquid-phase outlet of flash drum 12 is connected with rectifying column 15 and methanol tank 16 successively, after the gaseous phase outlet of flash drum 12 is connected with separator 13, exit gas is divided into two strands, one is connected with compressor bank 8 entrances, together with the gas outlet of another strand and rectifying column 15, enter mixer 14, the outlet of mixer 14 is connected to implement acting generating flow process with power generation sub-system.
The idiographic flow that utilizes living beings and solar energy to produce in the polygenerations systeme of methyl alcohol and generating shown in Fig. 1 is: living beings S1 carries out in plate type solar exsiccator 1, and water S1 produces steam by trough type solar heat-collector 2 and steam generator 3 simultaneously; The water vapour of dried living beings and production is together sent into tower high temperature gasification reactor 5, utilize tower type solar reflector field 4 to reflect and focus on and obtain high temperature heat source, first the high-temperature gas that gasification produces is undertaken cooling by gas desuperheater 6, and delivers to condensation of gas purifier 7 and carry out follow-up moisture separation and gas purification; Treated gas is delivered to after compressor bank 8 is carried out multistage pressurization and utilized heat exchanger 10 to complete preheating and is delivered in methyl alcohol synthetic reactor 9, and the methyl alcohol producing after reaction and the gas-liquid mixture of unreacting gas lower the temperature to provide respectively gas preheating and methanol rectification thermal source with this through heat exchanger 10 and gas-liquid desuperheater 11; Gas-liquid mixture after cooling utilizes flash drum 12 to carry out gas-liquid separation, isolated liquid methanol is delivered in methanol tank 16 after rectifying column 15 is purified, isolated gas utilizes separator 13 to adjust and is separated into two strands of gases, one circulation is returned to compressor bank 8 and proceeds Methanol Synthesis Process, another strand sends in firing chamber 17 and burns through mixer 14 together with the isolated gas componant of rectifying column 15, by adjusting the unreacting gas of separator 13 circulate recently methanol output and the generated output of adjust system; Air S3 delivers to firing chamber 17 so that oxygen composition to be provided after compressor 18 compressions, the high-temperature flue gas producing promotes combustion gas turbine 19 and does work, and then the flue gas that utilizes discharge is delivered to and in exhaust heat boiler 20, is produced Steam Actuation steam turbine 21 and do work, and circulate with the Rankine acting of condenser 22 and feed water pump 23 completes, finally utilize generator 24 to produce electric energy; Gas desuperheater 6 and methyl alcohol synthetic reactor 9 a large amount of heat that discharges, will introduce in power generation sub-system by forms such as heated feed waters.
The polygenerations systeme that utilizes living beings and solar energy to produce methyl alcohol and generating provided by the present invention, has carried out reasonable integrated utilization to two kinds of renewable energy sourcess, provides the needed methyl alcohol in market and electric energy by follow-up production process.In embodiment, adoptable major parameter is as shown in table 1.
Table 1
| Solar energy heating part | ? |
| Board-like sun solar energy drying actuator temperature DEG C/thermal efficiency % | 80/60 |
| Trough type solar heat-collector temperature DEG C/thermal efficiency % | 210/56 |
| Tower high temperature gasification reactor temperature DEG C/thermal efficiency % | 850/45 |
| Gasification of biomass part | ? |
| Gasification reaction temperature DEG C/pressure bar | 850/18 |
| Gas desuperheater outlet temperature DEG C | 165 |
| Methyl alcohol composite part | ? |
| Compressor bank outlet pressure bar/ efficiency % | 100/79 |
| Methyl alcohol synthetic reactor reaction temperature DEG C | 245 |
| Unreacting gas cycle ratio | 0 |
| Acting power generation part | ? |
| Compressor pressure ratio/efficiency | 15.4/85 |
| Combustion chambers burn temperature DEG C | 1200 |
| Combustion gas turbine efficiency %/delivery temperature DEG C | 87/592.7 |
| Steam turbine inlet temperature DEG C/pressure bar | 565/96.2 |
The for the benefit of lateral comparison to co-generation system performance proposed by the invention, divides product system and generating point product system as reference system to produce methyl alcohol.Co-generation system selects cotton in Xinjiang stalk as research object, empty butt stalk input flow rate with 100kg.s carries out system-computed, reference system all adopts solar energy drying living beings, but uses wet air as gasifying agent, and methyl alcohol divides the unreacting gas cycle ratio of product system to be set as 0.9 simultaneously.The thermal performance contrast of embodiment and two groups of reference systems is as shown in table 2
Table 2
The thermal efficiency of the polygenerations systeme that living beings and solar energy produces methyl alcohol and generating and the fire efficiency utilized provided by the invention reaches 43.86% and 49.17%, exceed 8.13 and 17.11 percentage points than a generating point product system, divide product system low 5.3 percentage points though be subject to impact that solar energy heating efficiency is lower to make system thermal efficiency ratio produce methyl alcohol, but system fire has exceeded 6.15 percentage points by efficiency, in general, arrange in pairs or groups and complete the relevant system intergration by solar energy and two kinds of different renewable energy sourcess of living beings, make polygenerations systeme provided by the invention there is good system advantage.Can reach 23.89% based on fire with the system relative energy saving ratio of analyzing, the in the situation that of the identical methanol output of output and generated output, the biomass energy-saving rate of system is especially up to 51.74%, and the living beings consumption of system has reduced over half relatively, has realized the efficient utilization of renewable energy sources.
Above-described specific embodiment; object of the present invention, technological scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. utilize living beings and solar energy to produce a polygenerations systeme for methyl alcohol and generating, it is characterized in that, this polygenerations systeme comprises:
Solar energy heating reaction subtense angle, comprise plate type solar exsiccator (1), trough type solar heat-collector (2), steam generator (3) and tower type solar reflector field (4), wherein, the solar energy that plate type solar exsiccator (1) utilization absorbs is dried the living beings (S1) that enter wherein, and dried living beings (S1) is sent into the tower high temperature gasification reactor (5) of gasification of biomass subtense angle; The hot junction of steam generator (3) is imported and exported with trough type solar heat-collector (2) is closed and is connected, the water (S2) that utilizes the heat of trough type solar heat-collector (2) to make to enter in steam generator (3) becomes steam, and steam is sent into tower high temperature gasification reactor (5); Tower type solar reflector field (4) is arranged in tower high temperature gasification reactor (5) around, as the thermal source of tower high temperature gasification reactor (5) high-temperature gasification reaction;
Gasification of biomass subtense angle, comprise tower high temperature gasification reactor (5), gas desuperheater (6) and gas condensation purifier (7), wherein, tower high temperature gasification reactor (5) utilizes tower type solar reflector field (4) to reflect and focus on and obtains high temperature heat source, make to enter the steam generation high-temperature gasification reaction that dried living beings (S1) wherein and steam generator (3) generate and produce high-temperature gas, first this high-temperature gas is undertaken cooling by gas desuperheater (6), and deliver to condensation of gas purifier (7) and carry out follow-up moisture separation and gas purification, treated gas is sent to the compressor bank (8) of methyl alcohol synthon system,
Methyl alcohol synthon system, comprise compressor bank (8), methyl alcohol synthetic reactor (9), heat exchanger (10), gas-liquid desuperheater (11), flash drum (12), separator (13), mixer (14), rectifying column (15) and methanol tank (16), wherein, compressor bank (8) is delivered in methyl alcohol synthetic reactor (9) after the gas entering being carried out to multistage pressurization and utilizing heat exchanger (10) to complete preheating, the methyl alcohol producing after reaction in methyl alcohol synthetic reactor (9) and the gas-liquid mixture of unreacting gas pass through heat exchanger (10) and gas-liquid desuperheater (11) cooling successively, gas-liquid mixture after cooling utilizes flash drum (12) to carry out gas-liquid separation, isolated liquid methanol is delivered in methanol tank (16) after rectifying column (15) is purified, isolated gas utilizes separator (13) to adjust and is separated into two strands of gases, one gas circulation is returned to compressor bank (8) and proceeds Methanol Synthesis Process, another strand of gas burns together with the isolated gas componant of rectifying column (15) in mixer (14) is sent into the firing chamber (17) of power generation sub-system,
Power generation sub-system, comprise firing chamber (17), compressor (18), combustion gas turbine (19), exhaust heat boiler (20), steam turbine (21), condenser (22), feed water pump (23) and generator (24), wherein, air (S3) is delivered to firing chamber (17) so that oxygen composition to be provided after compressor (18) compression, the high-temperature flue gas producing in firing chamber (17) promotes combustion gas turbine (19) acting, the flue gas of combustion gas turbine (19) discharge is sent to production Steam Actuation steam turbine (21) acting in exhaust heat boiler (20), exhaust heat boiler (20), steam turbine (21), condenser (22), feed water pump (23) circulates with the Rankine acting of generator (24) complete, finally utilize generator (24) to produce electric energy.
2. the polygenerations systeme that utilizes living beings and solar energy to produce methyl alcohol and generating according to claim 1, it is characterized in that, described plate type solar exsiccator (1) directly utilizes air as medium dried biomass (S1), and the contained water constituent of living beings (S1) is all removed.
3. the polygenerations systeme that utilizes living beings and solar energy to produce methyl alcohol and generating according to claim 1, it is characterized in that, described trough type solar heat-collector (2) is using conduction oil as heat absorption working medium, and utilize solar radiant energy to heat water (S2) by steam generator (3), make it be converted into saturated vapour.
4. the polygenerations systeme that utilizes living beings and solar energy to produce methyl alcohol and generating according to claim 1, it is characterized in that, described tower high temperature gasification reactor (5) carrys out focused solar energy by being arranged in its tower reflector field (4) around, so that high-temperature gasification heat source for reaction to be provided.
5. the polygenerations systeme that utilizes living beings and solar energy to produce methyl alcohol and generating according to claim 1, it is characterized in that, described gas desuperheater (6) and described methyl alcohol synthetic reactor (9) all will discharge a large amount of heats, and this heat is further introduced in power generation sub-system by the form of heated feed water.
6. the polygenerations systeme that utilizes living beings and solar energy to produce methyl alcohol and generating according to claim 1, it is characterized in that, described methyl alcohol synthetic reactor (9) outlet logistics utilize heat exchanger (10) by sensible heat transfer to entrance logistics to improve methyl alcohol synthetic ratio, and continue to deliver to gas-liquid desuperheater (11) and be beneficial to follow-up gas-liquid separation, utilize the sensible heat that discharges to provide middle low temperature boiling hot source again for rectifying column (15) simultaneously.
7. the polygenerations systeme that utilizes living beings and solar energy to produce methyl alcohol and generating according to claim 1, it is characterized in that, described flash drum (12) is for separating of not synthetic gas in methyl alcohol synthetic reactor (9), these gases are separated into two bursts of sub-logistics of gas by described separator (13), delivers to respectively compressor bank (8) and power generation sub-system.
8. the polygenerations systeme that utilizes living beings and solar energy to produce methyl alcohol and generating according to claim 1, it is characterized in that, this polygenerations systeme is recently realized the output production capacity of methyl alcohol and electric energy and is adjusted and distribute by adjusting the unreacting gas circulation of separator (13).
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