CN103940131B - The efficient twin-stage heat exchange of high-temperature plasma gasification synthesis gas, twin-stage electricity generation system - Google Patents
The efficient twin-stage heat exchange of high-temperature plasma gasification synthesis gas, twin-stage electricity generation system Download PDFInfo
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- 230000005611 electricity Effects 0.000 title claims abstract description 45
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- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 41
- 238000009272 plasma gasification Methods 0.000 title claims abstract description 16
- 239000007789 gas Substances 0.000 claims abstract description 153
- 238000000034 method Methods 0.000 claims abstract description 28
- 239000002912 waste gas Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 230000008569 process Effects 0.000 claims description 24
- 239000004071 soot Substances 0.000 claims description 16
- 230000007797 corrosion Effects 0.000 claims description 11
- 238000005260 corrosion Methods 0.000 claims description 11
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 6
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- 239000002699 waste material Substances 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
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- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000000505 pernicious effect Effects 0.000 abstract description 2
- 230000004083 survival effect Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 13
- 238000010248 power generation Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000004939 coking Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
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- 238000004140 cleaning Methods 0.000 description 2
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- 238000002309 gasification Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
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- 241000283074 Equus asinus Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
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- 230000005494 condensation Effects 0.000 description 1
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- 238000011069 regeneration method Methods 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
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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
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The present invention relates to Waste Disposal Technology field, be specifically related to a kind of heat exchange and the electricity generation system that utilize high-temperature tail gas.The efficient twin-stage heat exchange of high-temperature plasma gasification synthesis gas, twin-stage electricity generation system, comprise the twin-stage heat exchange boiler that inside is provided with high temperature heat exchanger channels and middle temperature heat exchanger channels, the air inlet of high temperature heat exchanger channels connects the synthesis gas delivery outlet of high-temperature plasma reactor, gas outlet connects gas electricity generator by combustible gas conveyance conduit, the air inlet of middle temperature heat exchanger channels connects the waste gas outlet of gas electricity generator, gas outlet connects external exhaust gas treating apparatus, and the clean steam (vapor) outlet of twin-stage heat exchange boiler connects steam turbine generator.Owing to adopting technique scheme, present invention achieves twin-stage heat exchange and twin-stage electricity generate function, significantly improved thermoelectric conversion efficiency and the benefit of Waste disposal industry; Greatly save comprehensive energy consumption, support the sustainable development of industry; Greatly reduce the discharge of pernicious gas, protect environment for human survival.
Description
Technical field
The present invention relates to Waste Disposal Technology field, be specifically related to a kind of heat exchange and the electricity generation system that utilize high-temperature synthesis gas.
Background technology
Containing a large amount of harmful substance in the high-temperature tail gas produced in burning process after traditional waste process, directly discharge meeting atmosphere pollution and environment; Discharge again after carrying out purified treatment, then can increase the input cost of equipment and resource, bring added burden to offal treatment industry.
The emergence and development of high-temperature plasma body technique, make offal treatment process more thorough, eliminate the generation of a large amount of harmful substance, the synthesis gas produced is with a large amount of heat energy, build gasification power generation system by gas turbine or gas electricity generator after can reclaiming to generate electricity, reclaimed the method for the energy after traditional waste treatment industry of comparing only produces heat energy by burning by steam turbine power generation mode, the thermoelectric conversion efficiency of gasification power generation system is higher.In the waste heat recovery process of traditional waste treatment industry, the major part in condensation process of the heat energy in steam is wasted; Various oxious components in tail gas cannot be effectively eliminated, and discharge process easily causes environmental pollution.But, there is not temporarily new power generating system conventional incineration generating and plasma (orifice) gas elelctrochemical power generation combined on the market, therefore excavate for the recovery of the heat energy in offal treatment process is also potential.
Summary of the invention
The object of the invention is to, a kind of efficient twin-stage heat exchange of high-temperature plasma gasification synthesis gas, twin-stage electricity generation system are provided, solve above technical problem.
Technical problem solved by the invention can realize by the following technical solutions:
The efficient twin-stage heat exchange of high-temperature plasma gasification synthesis gas, twin-stage electricity generation system, it is characterized in that, comprise a twin-stage heat exchange boiler, described twin-stage heat exchange boiler is a heat exchange boiler being provided with two independently heat exchanger channels, described two independent heat exchanger channels are high temperature heat exchanger channels and middle temperature heat exchanger channels, the air inlet of described high temperature heat exchanger channels connects the synthesis gas delivery outlet of high-temperature plasma reactor, the gas outlet of described high temperature heat exchanger channels connects combustible gas conveyance conduit, the high-temperature synthesis gas that described high-temperature plasma reactor produces cools through described high temperature heat exchanger channels, to complete first order heat exchange, then the flammable synthesis gas of low temperature low heat value is generated, described combustible gas conveyance conduit connects a gas electricity generator, for the flammable synthesis gas of described low temperature low heat value is carried out thermoelectricity conversion as the fuel of described gas electricity generator, to complete first order generating,
The waste gas outlet of described gas electricity generator connects the air inlet of described middle temperature heat exchanger channels, the gas outlet of described middle temperature heat exchanger channels connects external exhaust gas treating apparatus, the middle temperature tail gas produced in described gas electricity generator running carries out waste heat recovery in the process of described middle temperature passage, to complete second level heat exchange, the clean steam (vapor) outlet of described twin-stage heat exchange boiler connects a steam turbine generator, the clean steam produced when first order heat exchange and second level heat exchange is utilized to generate electricity, to complete second level generating.
The present invention is by arranging the twin-stage heat exchange boiler of built-in high temperature heat exchanger channels and middle temperature heat exchanger channels, be equipped with gas electricity generator and steam turbine generator, construct the mode of operation of twin-stage heat exchange and twin-stage generating, the synthesis gas resource produce in danger waste treatment process high-temperature plasma reactor and its heat energy had fully reclaim, combine the advantage of conventional incineration generation mode and plasma gasification generation mode, make conversion efficiency of thermoelectric obtain effective raising, maximize and reclaimed synthesis gas resource and heat energy.
Described twin-stage heat exchange boiler comprises boiler body, vapor can, low middle pressure pipe, described high temperature heat exchanger channels and described middle temperature heat exchanger channels is provided with in described boiler body, the water inlet end of described low middle pressure pipe connects a water preheater, the water inlet end of described water preheater connects external boiler water water supply line, the outlet side of described vapor can connects the inlet end of a steam superheater, and the outlet side of described steam superheater connects described steam turbine generator;
Be provided with temperature end heat exchanger in described high temperature heat exchanger channels, the two ends of described temperature end heat exchanger connect described vapor can and described low middle pressure pipe respectively;
Be provided with middle temperature end heat exchanger in described middle temperature heat exchanger channels, the two ends of described middle temperature end heat exchanger connect described vapor can and described low middle pressure pipe respectively.
The present invention is by arranging single vapor can structure, the risk that the steam produced after reducing various heat exchange channel for heat exchange has different pressures and brings.In work, the high pressure steam in temperature end heat exchanger and middle temperature are carried after holding the middle steam in heat exchanger to carry out pressure balance by this middle gas storage space of vapor can, guarantee the security of atmosphere storage and transport process.
Be provided with a plurality of described temperature end heat exchanger along gas circulating direction in described high temperature heat exchanger channels, the two ends of arbitrary described temperature end heat exchanger removably connect described vapor can and described low middle pressure pipe respectively.
Be provided with a plurality of described middle temperature end heat exchanger along gas circulating direction in described middle temperature heat exchanger channels, the two ends of arbitrary described middle temperature end heat exchanger removably connect described vapor can and described low middle pressure pipe respectively.
Heat exchanger in the present invention adopts modularized design, installation and removal work is made simply to be easy to operation, reduce maintenance difficulties, Detachable connection structure makes each heat exchanger become the unit that works alone, when single heat exchanger damages or overhauls, other heat exchangers or boiler body can not be had influence on, only need to placing under repair after the dismounting of this heat exchanger, changing or the maintenance of other modes, in process, boiler still can resume operation.
Arbitrary described temperature end heat exchanger is form, to strengthen equipment exchange capability of heat after pencil arranges by a plurality of heat exchanger tube;
Described middle temperature end heat exchanger adopts the structure identical with described temperature end heat exchanger.
Described steam superheater is arranged at the air inlet place of described high temperature heat exchanger channels, after arranging steam superheater the clean steam in vapor can is heated to be superheated steam further, be transported to steam turbine generator, promotes its generating, improves heat utilization rate.
Described steam superheater is form, to strengthen exchange capability of heat after pencil arranges by a plurality of heat exchanger tube.
The steam superheater that described steam superheater adopts a corrosion-resistant high-alloy steel to make.Because steam superheater is arranged at the air inlet place of high temperature heat exchanger channels, be in whole heat transfer process foremost, the temperature of the synthesis gas touched is the highest, and due to cooling and the fouling not through heat exchanger channels, harmful substance contents in synthesis gas is also the highest, is therefore the most easily corroded and fire damage, adopt corrosion-resistant high-alloy steel be steam superheater prepare material, contribute to improving the resistance to corrosion of superheater and intensity, extension device service life.
In described water preheater, corresponding described high temperature heat exchanger channels and described middle temperature heat exchanger channels are respectively equipped with high temperature side preheating channel and middle temperature side preheating channel, are convenient to the synthesis gas after utilizing heat exchange to lower the temperature and carry out preheating to boiler water;
The inlet end of described high temperature side preheating channel connects the outlet side of described high temperature heat exchanger channels, and the outlet side of described high temperature side preheating channel connects described combustible gas conveyance conduit;
The inlet end of described middle temperature side preheating channel connects the outlet side of described middle temperature heat exchanger channels, and the outlet side of described middle temperature side preheating channel connects described external exhaust gas treating apparatus.
The connecting line of described water preheater and described low middle pressure pipe is provided with water booster pump, anti-water-stop body adverse current, is also convenient to accelerating fluid and runs and to vapor can certain pressure, improve steam Transportation efficiency.
Described combustible gas conveyance conduit is provided with a pneumatic filter, high temperature micropore ceramic filter element is provided with in described pneumatic filter, by arranging pneumatic filter, filtration, purification is carried out to the low temperature low heat value fuel gas flowed through, reduce the impurity content in gas, high temperature micropore ceramic filter element is set in pneumatic filter and contributes to improving the quality of filtering and purifying.
Described combustible gas conveyance conduit is provided with a gas condenser, described gas condenser is arranged between described pneumatic filter and described gas electricity generator, the low temperature low heat value fuel gas flowed through lowered the temperature further condense out tar, to reduce the fouling on gas electricity generator by arranging gas condenser.
Described combustible gas conveyance conduit is provided with a gas boosting pump, and described gas boosting pump is arranged in the pipeline between described gas condenser and described gas electricity generator.
Described combustible gas conveyance conduit is provided with an external flammable gas input interface, and described external flammable gas input interface is arranged between described gas condenser and described gas boosting pump.
The offgas outlet of described steam turbine generator connects a steam-condensation tower, and described steam-condensation tower is used for recycling after boiler water reclaims, and reduces water resource loss.
Twin-stage heat exchange of the present invention, the operation principle of twin-stage power generation operation pattern is: the high-temperature synthesis gas from high-temperature plasma reactor successively flows through steam superheater, high temperature heat exchanger channels and water preheater, complete first order heat exchange, in process, high-temperature synthesis gas is first carried out contacting concurrent heat-dissipating with steam superheater and is exchanged, enter boiler body again and a plurality of temperature end heat exchanger carries out heat exchange, convert the boiler water flowing through its inside to high-temperature steam, through water preheater, preheating is being carried out to the boiler water flowed through in it through the cooled high-temperature synthesis gas of heat exchanger heat exchange, high-temperature synthesis gas again after cooling to become after the flammable synthesis gas of low temperature low heat value by Pipeline transport to gas electricity generator as fuel for power generation, carry out first order generating, the middle temperature tail gas that gas electricity generator produces successively flows through middle temperature heat exchanger channels and water preheater, complete second level heat exchange, in process, the boiler water in it is made to transfer middle temperature steam to during temperature end heat exchanger in middle temperature tail gas stream warp, self is by cooling down, and then when flowing through water preheater, preheating is carried out to boiler water, become low temperature exhaust gas after self further cooling down to be output to external exhaust gas treating apparatus and to carry out purified treatment, pressure balance has been carried out after flowing into vapor can in high-temperature steam and middle temperature vapor collection, then again heated flowing through in steam superheater process, be transported to steam turbine generator after thorough dehumidifying and carry out second level generating.
What be provided with the steam scale removal utilized in vapor can in described boiler body blows grey station, describedly blow grey station and be provided with a convolution retractable soot blower, described convolution retractable soot blower connects described vapor can, so that the high pressure cleaning steam utilizing vapor can to provide carries out deashing scale removal to the heating surface in boiler body.In boiler running process, the easy ash deposit and slag buildup of heating surface of equipment and coking, reduce the thermal conductivity factor of heating surface, heat exchanger effectiveness reduced; Easily make heating surface produce high/low temperature corrosion after fouling, increase the explosion probability of heat exchanger components, reduce service life of equipment, affect operating efficiency.The fouling coking situation that soot blower effectively can improve equipment heating surface is set, improves the operating efficiency of heating surface.Because high steam derives from boiler itself, therefore the present invention is without the need to additionally increasing outside air feed equipment and source of the gas, saves the input cost of resource and equipment.
The both sides of arbitrary described temperature end heat exchanger are respectively equipped with described at least one blows grey station and supporting described convolution retractable soot blower.
The both sides of arbitrary described middle temperature end heat exchanger are respectively equipped with described at least one blows grey station and supporting described convolution retractable soot blower.
At least side of described steam superheater is provided with described at least one blows grey station and supporting described convolution retractable soot blower.
Described vapor can is provided with a safety-valve for reducing pressure, getting rid of the danger when being convenient to vapor can pressure limit.
Described safety-valve preferably adopts a spring force adjustable safety valve door.
The heat exchanger tube that described heat exchanger tube adopts corrosion-resistant high-alloy steel to make, so that the resistance to corrosion and the mechanical strength that strengthen equipment, extension device service life.
Beneficial effect: owing to adopting technique scheme, present invention achieves twin-stage heat exchange and twin-stage electricity generate function, significantly improved thermoelectric conversion efficiency and the benefit of Waste disposal industry; Greatly save comprehensive energy consumption, support the sustainable development of industry; Greatly reduce the discharge of pernicious gas, protect environment for human survival.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is partial structurtes schematic diagram of the present invention.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, setting forth the present invention further below in conjunction with concrete diagram.
With reference to Fig. 1, Fig. 2, the efficient twin-stage heat exchange of high-temperature plasma gasification synthesis gas, twin-stage electricity generation system, comprise the twin-stage heat exchange boiler that inside is provided with high temperature heat exchanger channels and middle temperature heat exchanger channels.Twin-stage heat exchange boiler comprises boiler body, inside establish vapor can 1, low middle pressure pipe 2, the water inlet end of low middle pressure pipe 2 connects water preheater 3, water booster pump 4 is provided with in connecting line, the water inlet end of water preheater 3 connects external boiler water water supply line, the outlet side of vapor can 1 connects the inlet end of steam superheater 5, and the outlet side of steam superheater 5 connects steam turbine generator 6.
Be provided with a plurality of temperature end heat exchanger 7 along gas flow in high temperature heat exchanger channels, the two ends of arbitrary temperature end heat exchanger 7 removably connect vapor can 1 and low middle pressure pipe 2 respectively; Be provided with a plurality of middle temperature end heat exchanger along gas flow in middle temperature heat exchanger channels, the two ends of arbitrary middle temperature end heat exchanger removably connect vapor can 1 and low middle pressure pipe 2 respectively.The air inlet of high temperature heat exchanger channels connects the synthesis gas delivery outlet of high-temperature plasma reactor, and steam superheater 5 is arranged at the air inlet place of high temperature heat exchanger channels.The gas outlet of high temperature heat exchanger channels connects gas electricity generator 8 by combustible gas conveyance conduit, externally exports the flammable synthesis gas of cooled low temperature low heat value, to carry out waste heat recovery to high-temperature synthesis gas, for generating.Combustible gas conveyance conduit is provided with pneumatic filter 9, is provided with high temperature micropore ceramic filter element in pneumatic filter 9, carries out filtration, purification by arranging pneumatic filter 9 to the low temperature low heat value fuel gas flowed through, and reduces impurity content in gas, improves gas combustion value.Gas condenser 15 is provided with to improve the depuration quality of combustion gas after pneumatic filter 9.Combustible gas conveyance conduit is provided with gas boosting pump 10, and gas boosting pump 10 is arranged in the pipeline between gas condenser 15 and gas electricity generator 8.Combustible gas conveyance conduit is provided with external flammable gas input interface, and external flammable gas input interface is arranged on the connecting line between gas condenser and gas boosting pump.The offgas outlet of steam turbine generator 6 connects steam-condensation tower 11, and recycling after steam-condensation tower 11 reclaims for boiler water, reduces water resource loss.The air inlet of warm heat exchanger channels in the waste gas outlet connection of gas electricity generator 8, the gas outlet of middle temperature heat exchanger channels connects external exhaust gas treating apparatus 12, is convenient to the low temperature exhaust gas after heat exchanging and carries out purified treatment.Vapor can 1 is provided with the spring force adjustable safety valve door 14 for reducing pressure, getting rid of the danger when being convenient to vapor can 1 pressure limit.What be provided with the high steam scale removal utilized in vapor can in boiler body blows grey station 13, blow grey station 13 and be provided with a convolution retractable soot blower, convolution retractable soot blower connects vapor can 1, so that the high pressure cleaning steam utilizing vapor can 1 to provide carries out deashing scale removal to the heating surface in boiler body.The both sides of arbitrary temperature end heat exchanger 7 and arbitrary middle temperature end heat exchanger are respectively equipped with at least one and blow grey station and supporting convolution retractable soot blower.At least side of steam superheater 5 is provided with at least one and blows grey station and supporting convolution retractable soot blower.In heat exchange boiler running, the easy ash deposit and slag buildup of heating surface of equipment and coking, reduce the thermal conductivity factor of heating surface, heat exchanger effectiveness reduced; Easily make heating surface produce high/low temperature corrosion after fouling, increase the explosion probability of heat exchanger components, reduce service life of equipment, affect operating efficiency.Utilize soot blower effectively can improve the fouling coking situation of equipment heating surface, improve the operating efficiency of heating surface.Because high steam derives from waste heat boiler itself, therefore the present invention is without the need to additionally increasing outside air feed equipment and source of the gas, saves the input cost of resource and equipment.Arbitrary temperature end heat exchanger 7 is form after pencil arranges by a plurality of heat exchanger tube, and steam superheater 5 is form after pencil arranges by a plurality of heat exchanger tube, to increase heating surface, strengthens equipment exchange capability of heat; Middle temperature end heat exchanger adopts the structure identical with temperature end heat exchanger.Heat exchanger tube adopts corrosion-resistant high-alloy steel to make, and steam superheater 5 adopts corrosion-resistant high-alloy steel to make, to strengthen corrosion resistance and the intensity of equipment, increases the service life of equipment.In water preheater 3, corresponding high temperature heat exchanger channels and middle temperature heat exchanger channels are respectively equipped with high temperature side preheating channel and middle temperature side preheating channel, are convenient to the synthesis gas after utilizing heat exchange to lower the temperature and carry out preheating to boiler water; The inlet end of high temperature side preheating channel connects the outlet side of high temperature heat exchanger channels, and the outlet side of high temperature side preheating channel connects combustible gas conveyance conduit; The outlet side of warm heat exchanger channels in the inlet end connection of middle temperature side preheating channel, the outlet side of middle temperature side preheating channel connects external exhaust gas treating apparatus 12.
The present invention is by arranging single vapor can structure, the risk that the steam produced after reducing various heat exchange channel for heat exchange has different pressures and brings.In work, high-temperature steam in temperature end heat exchanger and middle temperature are carried after holding the middle temperature steam in heat exchanger to carry out pressure balance by this middle gas storage space of vapor can, guarantee the security of atmosphere storage and transport process, to a certain degree avoid the situation of the pressure limit that single heat exchanger channels and single vapor can cause in traditional handicraft.Heat exchanger adopts modularized design, installation and removal work is made simply to be easy to operation, reduce maintenance difficulties, Detachable connection structure makes each heat exchanger become the unit that works alone, when single heat exchanger damages or overhauls, other heat exchangers or boiler body can not be had influence on, only need to placing under repair after the dismounting of this heat exchanger, changing or the maintenance of other modes, in process, boiler still can resume operation.
The present invention has the mode of operation of twin-stage heat exchange, twin-stage generating: the high-temperature synthesis gas coming from high-temperature plasma reactor is carrying out first order heat exchange through high temperature heat exchanger channels, changed into the flammable synthesis gas of low temperature low heat value in heat exchanging process after cooling down to be output to gas electricity generator and to generate electricity for the first order, the product of first order heat transfer process is except the flammable synthesis gas of low temperature low heat value, also have the clean steam transformed by boiler water after absorbing heat, clean steam is transported to steam turbine generator and carries out second level generating; During gas electricity generator generates in power generation process warm synthesis gas in being input to by waste gas outlet warm heat exchanger channels carry out second level heat exchange, become low temperature exhaust gas in heat exchanging process after cooling down to be transported to external exhaust gas treating apparatus and to carry out purified treatment, heat donkey boiler water in the heat transfer process of the second level is converted into clean steam, continues to participate in second level generating.The mode of operation of twin-stage heat exchange, twin-stage generating is constructed by arranging high temperature heat exchanger channels and middle temperature heat exchanger channels, substantially increase thermoelectric conversion rate, improve and improve the operating efficiency of whole residual neat recovering system, effectively achieving the tail gas recycle after trade waste process and utilize and energy regeneration.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (9)
1. the efficient twin-stage heat exchange of high-temperature plasma gasification synthesis gas, twin-stage electricity generation system, it is characterized in that, comprise a twin-stage heat exchange boiler, described twin-stage heat exchange boiler is a heat exchange boiler being provided with two independently heat exchanger channels, described two independent heat exchanger channels are high temperature heat exchanger channels and middle temperature heat exchanger channels, the air inlet of described high temperature heat exchanger channels connects the synthesis gas delivery outlet of high-temperature plasma reactor, the gas outlet of described high temperature heat exchanger channels connects combustible gas conveyance conduit, and described combustible gas conveyance conduit connects a gas electricity generator;
The waste gas outlet of described gas electricity generator connects the air inlet of described middle temperature heat exchanger channels, the gas outlet of described middle temperature heat exchanger channels connects external exhaust gas treating apparatus, and the clean steam (vapor) outlet of described twin-stage heat exchange boiler connects the steam turbine generator that the clean steam utilizing twin-stage heat exchange boiler to produce in heat transfer process carries out generating electricity;
Described twin-stage heat exchange boiler comprises boiler body, vapor can, low middle pressure pipe, described high temperature heat exchanger channels and described middle temperature heat exchanger channels is provided with in described boiler body, the water inlet end of described low middle pressure pipe connects a water preheater, the water inlet end of described water preheater connects external boiler water water supply line, the outlet side of described vapor can connects the inlet end of a steam superheater, and the outlet side of described steam superheater connects described steam turbine generator;
Be provided with temperature end heat exchanger in described high temperature heat exchanger channels, the two ends of described temperature end heat exchanger connect described vapor can and described low middle pressure pipe respectively;
Be provided with middle temperature end heat exchanger in described middle temperature heat exchanger channels, the two ends of described middle temperature end heat exchanger connect described vapor can and described low middle pressure pipe respectively;
Described steam superheater is arranged at the air inlet place of described high temperature heat exchanger channels.
2. the efficient twin-stage heat exchange of high-temperature plasma gasification synthesis gas according to claim 1, twin-stage electricity generation system, it is characterized in that, be provided with a plurality of described temperature end heat exchanger along gas circulating direction in described high temperature heat exchanger channels, the two ends of arbitrary described temperature end heat exchanger removably connect described vapor can and described low middle pressure pipe respectively;
Be provided with a plurality of described middle temperature end heat exchanger along gas circulating direction in described middle temperature heat exchanger channels, the two ends of arbitrary described middle temperature end heat exchanger removably connect described vapor can and described low middle pressure pipe respectively.
3. the efficient twin-stage heat exchange of high-temperature plasma gasification synthesis gas according to claim 1, twin-stage electricity generation system, is characterized in that, described steam superheater is form after pencil arranges by a plurality of heat exchanger tube;
The steam superheater that described steam superheater adopts a corrosion-resistant high-alloy steel to make.
4. the efficient twin-stage heat exchange of high-temperature plasma gasification synthesis gas according to claim 1, twin-stage electricity generation system, it is characterized in that, in described water preheater, corresponding described high temperature heat exchanger channels and described middle temperature heat exchanger channels are respectively equipped with high temperature side preheating channel and middle temperature side preheating channel;
The inlet end of described high temperature side preheating channel connects the outlet side of described high temperature heat exchanger channels, and the outlet side of described high temperature side preheating channel connects described combustible gas conveyance conduit;
The inlet end of described middle temperature side preheating channel connects the outlet side of described middle temperature heat exchanger channels, and the outlet side of described middle temperature side preheating channel connects described external exhaust gas treating apparatus.
5. the efficient twin-stage heat exchange of high-temperature plasma gasification synthesis gas according to claim 1, twin-stage electricity generation system, it is characterized in that, described combustible gas conveyance conduit is provided with a pneumatic filter, is provided with high temperature micropore ceramic filter element in described pneumatic filter.
6. the efficient twin-stage heat exchange of high-temperature plasma gasification synthesis gas according to claim 5, twin-stage electricity generation system, it is characterized in that, described combustible gas conveyance conduit is provided with a low temperature low heat value fuel gas being convenient to make to flow through and lowers the temperature further and condense out the gas condenser of tar, and described gas condenser is arranged between described pneumatic filter and described gas electricity generator;
Described combustible gas conveyance conduit is provided with a gas boosting pump, and described gas boosting pump is arranged in the pipeline between described gas condenser and described gas electricity generator;
Described combustible gas conveyance conduit is provided with an external flammable gas input interface, and described external flammable gas input interface is arranged between described gas condenser and described gas boosting pump.
7. the efficient twin-stage heat exchange of high-temperature plasma gasification synthesis gas according to claim 1, twin-stage electricity generation system, is characterized in that, the offgas outlet of described steam turbine generator connect one reclaim for boiler water after the steam-condensation tower of recycling.
8. the efficient twin-stage heat exchange of the high-temperature plasma gasification synthesis gas according to any one of claim 1 to 7, twin-stage electricity generation system, it is characterized in that, what be provided with the steam scale removal utilized in vapor can in described boiler body blows grey station, describedly blow grey station and be provided with a convolution retractable soot blower, described convolution retractable soot blower connects described vapor can.
9. the efficient twin-stage heat exchange of high-temperature plasma gasification synthesis gas according to claim 8, twin-stage electricity generation system, it is characterized in that, the both sides of arbitrary described temperature end heat exchanger are respectively equipped with described at least one blows grey station and supporting described convolution retractable soot blower;
The both sides of arbitrary described middle temperature end heat exchanger are respectively equipped with described at least one blows grey station and supporting described convolution retractable soot blower;
At least side of described steam superheater is provided with described at least one blows grey station and supporting described convolution retractable soot blower.
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| CN109161402B (en) * | 2018-09-19 | 2022-03-08 | 天津大学 | Plasma gasification treatment device and method for solid waste |
| CN114876641A (en) * | 2022-06-14 | 2022-08-09 | 西安热工研究院有限公司 | Gas turbine inlet air cooling system utilizing LNG gasification cold energy and working method thereof |
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| WO2006128286A1 (en) * | 2005-06-03 | 2006-12-07 | Plasco Energy Group Inc. | A system for the conversion of coal to a gas of a specified composition |
| CN101994528A (en) * | 2009-08-13 | 2011-03-30 | 通用电气公司 | Ntegrated gasification combined cycle (igcc) power plant steam recovery system |
| CN102061196A (en) * | 2011-01-27 | 2011-05-18 | 中国科学院力学研究所 | Power generation method and device adopting plasma gasification of household garbage and biomass |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2006128286A1 (en) * | 2005-06-03 | 2006-12-07 | Plasco Energy Group Inc. | A system for the conversion of coal to a gas of a specified composition |
| CN101278034A (en) * | 2005-06-03 | 2008-10-01 | 普拉斯科能源集团公司 | System for the conversion of coal to a gas of specified composition |
| CN101994528A (en) * | 2009-08-13 | 2011-03-30 | 通用电气公司 | Ntegrated gasification combined cycle (igcc) power plant steam recovery system |
| CN102061196A (en) * | 2011-01-27 | 2011-05-18 | 中国科学院力学研究所 | Power generation method and device adopting plasma gasification of household garbage and biomass |
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