CN203144349U - Dry pulverized coal pressurized entrained-flow bed gasifying device based on chemical-looping combustion - Google Patents
Dry pulverized coal pressurized entrained-flow bed gasifying device based on chemical-looping combustion Download PDFInfo
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- CN203144349U CN203144349U CN2013200760532U CN201320076053U CN203144349U CN 203144349 U CN203144349 U CN 203144349U CN 2013200760532 U CN2013200760532 U CN 2013200760532U CN 201320076053 U CN201320076053 U CN 201320076053U CN 203144349 U CN203144349 U CN 203144349U
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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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
Abstract
The utility model provides a dry pulverized coal pressurized entrained-flow bed gasifying device based on chemical-looping combustion. The dry pulverized coal pressurized entrained-flow bed gasifying device based on chemical-looping combustion comprises an air reactor, wherein the air reactor is connected with a gas-solid separation device; a solid outlet of the gas-solid separation device is connected with an inlet of a fuel reactor; a solid outlet of the fuel reactor is connected with the air reactor; a gas outlet of the fuel reactor is connected with a steam condensation device; the steam condensation device is connected with a condensate water storage tank; the condensate water storage tank is connected with a chilling water inlet of a gasifying furnace; a gas outlet of the steam condensation device is connected with a pulverized coal conveying device; a superheated steam generation device, an air separation device and the pulverized coal conveying device are connected with a gasifying nozzle; the gasifying nozzle is connected with the gasifying furnace; and the gasifying furnace is connected with a deslagging device. The device provided by the utility model can realize nearly zero emission of CO2 by use of the greenhouse gas CO2 by a method integrating chemical-looping combustion and entrained-flow bed gasification; and by adopting CO2 as a conveying medium and a gasifying agent, the device is favorable for increasing the content and calorific value of the synthesis gas.
Description
Technical field
The utility model relates to a kind of dry coal powder pressurized air flow bed gasifying apparatus based on burning chemistry chains, is used for the entrained flow gasification technology of Coal Chemical Industry or integrated gasification combined cycle for power generation (IGCC).
Background technology
Coal Gasification Technology is the core of following clean coal technology, being the basis of commercial runs such as development coal-based Chemicals (synthetic ammonia, methyl alcohol processed, dme etc.), coal-based Poly-generation, advanced IGCC generating, extensive hydrogen manufacturing, fuel cell, is core technology and the leading technology of the coal-based high efficient energy sources system of realization pollutent near zero release.
Entrained flow bed gasification technology becomes the main flow direction of Coal Gasification Technology development because coal subject range is relatively wide, gasification temperature, pressure height, be easy to maximize.To mainly contain with the coal water slurry be GE (Texaco) gasification technology, the E-Gas gasification technology of raw material to representational entrained flow bed gasification technology in the world, is Shell gasification technology, Prenflo gasification technology and the GSP gasification technology of raw material with the dry coal powder.Domestic gasification technology has: multi-nozzle opposed type coal water slurry and coal gasification, polynary slurry gasification technology, HT-L gasification technology, classification oxygen supply slag-non-slag gasification technology, two-part bed pulverized coal gasification technology etc.
Patent CN1637118 has introduced a kind of pressurized gasifying process of polynary slurry, this technology comprises polynary slurry preparation, pressurized gasification, raw gas purifying, lime-ash discharging and grey water handing five parts, and this technology has that adaptability to raw material is extensive, gasification index good, process unit equipment is few, plant investment is few, the advantage of easy and simple to handle and environmental protection; Patent CN101570699 provides a kind of apparatus for gasifying solid fuel, by repeatedly cooling, removal of impurities and heat recuperation, improved the purity of the synthetic gas of final acquisition, this installs not only efficiency of carbon conversion height, and the complementary energy waste heat recovery is effective, the water consumption is low, pollution-free.
Patent CN1775920 has introduced a kind of multi-nozzle coal water slurry or powder coal gasification furnace for coal water slurry or coal gasification.Vaporizer is made up of housing, technology nozzle box, technology nozzle, preheating burner chamber, preheating burner, the housing inner lining refractory block, and scrubbing-cooling chamber is made up of chilling ring, downtake, foam-breaking strip and following cinder notch.Patent CN101003754 has introduced a kind of entrained flow gasification and gasification process thereof, comprises with lower member: furnace shell, flue, chilling ring, water sealed tank, guide shell, baffling tube, gasified raw material and gasification agent inlet, raw gas outlet and slag notch.This utility model is not only simple in structure, saves construction cost, and is convenient to maintenance and the maintenance of equipment.
Burning chemistry chains (chemical looping combustion) is a kind of brand-new burning theory, and fuel directly and the air catalytic combustion but does not react to realize the combustion processes of fuel with the cycle alternation of oxygen carrier between two reactors; Oxygen carrier carries out oxidizing reaction in air, carry out reduction reaction with fuel then, and the gas-phase reaction product after the reduction has only CO
2And H
2O (vapour) by the condensation water outlet of condensing, obtains high-purity CO
2
Patent CN102589147A has introduced the solid-fuelled method of a kind of burning chemistry chains and device thereof, and gasifying reactor is arranged in air reactor inside, and coal and water vapor gasify in gasifying reactor, and institute's heat requirement is from the heat release of peripheral air reactor; The synthetic gas that generates in the gasifying reactor enters the fuel reaction device; Oxygen carrier NiO is at fuel reaction device and synthesis gas reaction, and solid product is lower valency Ni, and gaseous product is water vapor and CO
2, condensation separation obtains pure CO after going out wherein water
2Lower valency Ni enters air reactor and is oxidized to the NiO of high valence state again by air, discharges heat, and oxygen carrier NiO realizes recycle.
Patent CN102183014A has introduced a kind of coal pressurization high-density circulating fluidized bed burning chemistry chains separation of C O
2Method, the generating gasification reaction in pressurization high-density circulating fluidized bed fuel reaction device of coal particle and vaporized chemical, gasification product and the oxygen carrier generation combustion reactions of returning the fuel reaction device generate CO
2And H
2O; The flue gas that reaction produces carries oxygen loss oxygen carrier and carbon containing coal ash, entering primary cyclone separates, the oxygen loss oxygen carrier that separates is in contact with one another reaction with the air that laterally passes through and obtains regeneration in cross-flow moving bed air reactor, return the fuel reaction device by the one-level material returning device and continue to participate in combustion reactions; Primary cyclone is isolated flue gas and is further entered the secondary cyclone separation, and the solid particulate that secondary separation goes out returns the fuel reaction device through the secondary material returning device to be continued to participate in combustion reactions, and isolated gas is rejected H through condensation
2Obtain highly purified CO behind the O
2
But the burning of integrated chemical chain is less at present with the utility model of entrained flow bed gasification technology, the purer CO that the utility model utilizes burning chemistry chains to produce
2With vaporized chemical and the delivery medium of water vapor as the gasification of dry coal powder pressurized entrained-bed, a kind of novel dry coal powder airflow bed gasifying process based on burning chemistry chains has been proposed.
Summary of the invention
The purpose of this utility model provides a kind of dry coal powder pressurized air flow bed gasifying apparatus based on burning chemistry chains, seldom adopts CO at existing entrained flow gasification technology
2As the shortcoming of vaporized chemical and delivery medium, the CO that adopts burning chemistry chains to produce
2As the delivery medium of vaporized chemical and fine coal, take full advantage of the CO that produces in the system
2, GHG (Greenhouse Gases) emissions mitigation is to the influence of climate change; The water vapor that produces is by being condensed into water as the synthetic gas of gasification generation and the quenched water of slag.CO
2Vaporized chemical and carbon reaction generate CO gas, and the gaseous constituent behind the gasification reaction mainly is CO and H
2, CO
2Content seldom.
The utility model provides a kind of dry coal powder pressurized air flow bed gasifying apparatus based on burning chemistry chains, it is characterized in that, comprise air reactor, the outlet of air reactor connects the entrance of gas-solid separating device, the solid outlet of gas-solid separating device connects the entrance of fuel reaction device, the solid product outlet of fuel reaction device connects the oxygen carrier circulation device, the oxygen carrier circulation device connects air reactor, the gaseous product outlet of fuel reaction device connects steam condensing plant, the condensation-water drain of steam condensing plant connects the entrance of water of condensation storage tank, the outlet of water of condensation storage tank connects the chilled water entrance of vapourizing furnace, the pneumatic outlet of steam condensing plant connects the fine coal e Foerderanlage, the vapour outlet of superheated steam producer, the discharge of the oxygen outlet of air separation plant and fine coal e Foerderanlage connects gasification nozzle, gasification nozzle links to each other with vapourizing furnace, and vapourizing furnace connects slag discharging device.
The utility model also provides a kind of dry coal powder pressurized air flow bed gasification method based on burning chemistry chains, it is characterized in that, adopt the above-mentioned dry coal powder pressurized air flow bed gasifying apparatus based on burning chemistry chains, concrete steps are: the lower valency material MxO that oxygen carrier reduction back forms in air reactor
Y-1Generate oxygen carrier MxOy with the air generation oxidizing reaction that enters from the air reactor bottom, nitrogen and unreacted oxygen and oxygen carrier completely enter gas-solid separating device and carry out gas solid separation, the direct emptying of isolated gas, oxygen carrier enters the fuel reaction device, solid fuel or geseous fuel in the fuel reaction device with oxygen carrier generation reduction reaction, generate CO
2Lower valency material MxO with water vapor and oxygen carrier reduction back formation
Y-1, the lower valency material MxO that oxygen carrier reduction back forms
Y-1Return air reactor recycle regeneration oxygen carrier, the CO that the fuel reaction device produces by the oxygen carrier circulation device
2Enter steam condensing plant with water vapor, water vapor condensation becomes water of condensation, and water of condensation enters the water of condensation storage tank, and the moisture of water of condensation storage tank outlet enters vapourizing furnace as the high-temperature synthesis gas of gasification reaction generation and cooling and the washing medium of molten slag; Air separation plant becomes nitrogen and oxygen with air separation, and the water vapor of steam-generating installation generation enters gasification nozzle with the oxygen mix from air separation plant, from the CO of steam condensing plant
2Enter the coal dust e Foerderanlage and enter gasification nozzle for delivery of coal dust, gasification nozzle is with mixture and the CO of oxygen and water vapor
2Spray into the reaction of airflow bed gasification furnace generating gasification, CO with coal dust
2Vaporized chemical as gasification reaction, a large amount of heats that reaction produces make slag present liquid state, synthetic gas is carried slag secretly and is entered chilling device, the water input chilling device of water of condensation storage tank outlet is as cooling and washing medium, synthetic gas after the Quench enters the subsequent disposal unit by syngas outlet, and the slag of the glass transition of generation is discharged by slag discharging device.
Further, described oxygen carrier MxOy is metal oxygen carrier or nonmetal oxygen carrier.
Further, described metal oxygen carrier is preferably CuO, NiO, Fe
2O
3, MnO
2Or CoO.
Further, described nonmetal oxygen carrier is preferably CaSO
4, BaSO
4Or SrSO
4
Further, the lower valency material MxO of described oxygen carrier reduction back formation
Y-1Be Fe
3O
4, Ni, Cu
2O, MnO, CaS, BaS, SrS.
Further, described solid fuel is coal or biomass or refinery coke or its mixture etc.
Further, described geseous fuel is Sweet natural gas or synthetic gas or hydrogen or its mixture etc.
Compared with prior art, the beneficial effects of the utility model are:
(1) adopt the integrated method of burning chemistry chains and entrained flow gasification to utilize greenhouse gases CO
2, can realize CO
2Near zero release; CO
2As delivery medium and vaporized chemical, be conducive to improve content and the calorific value of synthetic gas;
(2) the water vapor condensation water that produces of burning chemistry chains can be used as high-temperature synthesis gas that gasification reaction produces and the chilled water of slag, not only energy-conservation but also environmental protection.
(3) the overall system process flow process is simple, reliable, is conducive to save energy and resource, and this entrained flow gasification technology can be used for Coal Chemical Industry or IGCC generating, utilizes significant to the clean and effective of coal.
Description of drawings
Fig. 1 is the dry coal powder pressurized air flow bed gasifying apparatus synoptic diagram based on burning chemistry chains.
Embodiment
For the utility model is become apparent, now with preferred embodiment, and conjunction with figs. is described in detail below.
Embodiment
As shown in Figure 1, be the dry coal powder pressurized air flow bed gasifying apparatus synoptic diagram based on burning chemistry chains, described dry coal powder pressurized air flow bed gasifying apparatus based on burning chemistry chains is made up of air generator, gas-solid separating device, fuel reaction device, steam condensing plant, water of condensation storage tank, oxygen carrier circulation device, coal dust e Foerderanlage, superheated steam producer, gasification nozzle, air separation plant, vapourizing furnace and slag discharging device.The outlet of air reactor connects the entrance of gas-solid separating device, the solid outlet of gas-solid separating device connects the entrance of fuel reaction device, the pneumatic outlet of gas-solid separating device connects atmosphere, the solid product outlet of fuel reaction device connects the oxygen carrier circulation device, the oxygen carrier circulation device connects air reactor, the gaseous product outlet of fuel reaction device connects steam condensing plant, the condensation-water drain of steam condensing plant connects the entrance of water of condensation storage tank, the outlet of water of condensation storage tank connects the chilled water entrance of vapourizing furnace, the pneumatic outlet of steam condensing plant connects the fine coal e Foerderanlage, the vapour outlet of superheated steam producer, the discharge of the oxygen outlet of air separation plant and fine coal e Foerderanlage connects gasification nozzle, gasification nozzle links to each other with vapourizing furnace, vapourizing furnace has gasification nozzle, syngas outlet, slag-drip opening and chilled water entrance and exit, vapourizing furnace connects slag discharging device.
Adopt the concrete steps based on the dry coal powder pressurized air flow bed gasification method of burning chemistry chains of said apparatus to be: the lower valency substance C u that oxygen carrier reduction back forms in air reactor
2O generates oxygen carrier CuO with the air generation oxidizing reaction that enters from the air reactor bottom, nitrogen and unreacted oxygen and oxygen carrier completely enter gas-solid separating device and carry out gas solid separation, the direct emptying of isolated gas, oxygen carrier enters the fuel reaction device, coal in the fuel reaction device with oxygen carrier generation reduction reaction, generate CO
2Lower valency substance C u with water vapor and oxygen carrier reduction back formation
2O, the lower valency substance C u that oxygen carrier reduction back forms
2O returns air reactor recycle regeneration oxygen carrier CuO by the oxygen carrier circulation device.
The CO that the fuel reaction device produces
2Enter steam condensing plant separation of C O with water vapor
2And water vapour, water vapor condensation becomes water of condensation, and water of condensation enters the water of condensation storage tank, and the moisture of water of condensation storage tank outlet enters vapourizing furnace as the high-temperature synthesis gas of gasification reaction generation and cooling and the washing medium of molten slag; Air separation plant becomes nitrogen and oxygen with air separation, and the water vapor of steam-generating installation generation enters gasification nozzle with the oxygen mix from air separation plant, from the CO of steam condensing plant
2Enter the coal dust e Foerderanlage and enter gasification nozzle for delivery of coal dust, gasification nozzle is with mixture and the CO of oxygen and water vapor
2Spray into the reaction of airflow bed gasification furnace generating gasification, CO with coal dust
2Vaporized chemical as gasification reaction, a large amount of heats that reaction produces make slag present liquid state, synthetic gas is carried slag secretly and is entered chilling device, the water input chilling device of water of condensation storage tank outlet is as cooling and washing medium, synthetic gas after the Quench enters the subsequent disposal unit by syngas outlet, and the slag of the glass transition of generation is discharged by slag discharging device.
Core concept of the present utility model is the CO that utilizes burning chemistry chains to produce
2As the coal dust delivery medium of dry coal powder pressurized air flow bed gasification furnace and the vaporized chemical of gasification reaction.The water that condensation produces is as washing and the heat-eliminating medium of synthetic gas and slag.The reaction that takes place in the vapourizing furnace mainly contains:
CO
2+C＝2CO+172MJ/kmol (1)
H
2O+C＝H
2+CO+131MJ/kmol (2)
The utility model has solved some main drawbacks of present entrained flow gasification, because the CO that adopts burning chemistry chains to produce
2As vaporized chemical, under the situation that does not reduce cold gas efficiency, reduced the oxygen-consumption of whole gasification significantly, thereby reduced the investment of air separation facility; Adopt CO
2Be conducive to improve output and the CO content of synthetic gas as vaporized chemical and pulverized coal conveying, to being that the Coal Chemical Industry manufacturing enterprise of target product is more favourable with methyl alcohol etc.; The carbon dioxide gasification reaction is thermo-negative reaction, can reduce the synthetic gas temperature that gasification reaction generates, and has alleviated the burden of the syngas cooler in downstream, has reduced the available energy loss of production process, has improved the utilising efficiency of heat.Utilize gasification reaction to consume CO simultaneously
2, utilize the synthetic gas that produces to generate Chemicals or generating, be conducive to realize CO
2Reduction of discharging, CO
2Need not to seal up for safekeeping behind the compression drying, thereby reduce compression and seal CO up for safekeeping
2Power loss, reduce the CO seal up for safekeeping
2The risk of revealing.
Claims (1)
1. dry coal powder pressurized air flow bed gasifying apparatus based on burning chemistry chains, it is characterized in that, comprise air reactor, the outlet of air reactor connects the entrance of gas-solid separating device, the solid outlet of gas-solid separating device connects the entrance of fuel reaction device, the solid product outlet of fuel reaction device connects the oxygen carrier circulation device, the oxygen carrier circulation device connects air reactor, the gaseous product outlet of fuel reaction device connects steam condensing plant, the condensation-water drain of steam condensing plant connects the entrance of water of condensation storage tank, the outlet of water of condensation storage tank connects the chilled water entrance of vapourizing furnace, the pneumatic outlet of steam condensing plant connects the fine coal e Foerderanlage, the vapour outlet of superheated steam producer, the discharge of the oxygen outlet of air separation plant and fine coal e Foerderanlage connects gasification nozzle, gasification nozzle links to each other with vapourizing furnace, and vapourizing furnace connects slag discharging device.
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| CN2013200760532U CN203144349U (en) | 2013-02-18 | 2013-02-18 | Dry pulverized coal pressurized entrained-flow bed gasifying device based on chemical-looping combustion |
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|---|---|---|---|
| CN2013200760532U CN203144349U (en) | 2013-02-18 | 2013-02-18 | Dry pulverized coal pressurized entrained-flow bed gasifying device based on chemical-looping combustion |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103087776A (en) * | 2013-02-18 | 2013-05-08 | 上海锅炉厂有限公司 | Chemical Iooping combustion-based dry pulverized coal pressurized entrained-flow bed gasification method and chemical Iooping combustion-based dry pulverized coal pressurized entrained-flow bed gasification device |
-
2013
- 2013-02-18 CN CN2013200760532U patent/CN203144349U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103087776A (en) * | 2013-02-18 | 2013-05-08 | 上海锅炉厂有限公司 | Chemical Iooping combustion-based dry pulverized coal pressurized entrained-flow bed gasification method and chemical Iooping combustion-based dry pulverized coal pressurized entrained-flow bed gasification device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130821 Effective date of abandoning: 20140903 |
|
| RGAV | Abandon patent right to avoid regrant |