CN101676523A - Directly cooling coarse coal gas for gasification of airflow bed - Google Patents
Directly cooling coarse coal gas for gasification of airflow bed Download PDFInfo
- Publication number
- CN101676523A CN101676523A CN200910173490A CN200910173490A CN101676523A CN 101676523 A CN101676523 A CN 101676523A CN 200910173490 A CN200910173490 A CN 200910173490A CN 200910173490 A CN200910173490 A CN 200910173490A CN 101676523 A CN101676523 A CN 101676523A
- Authority
- CN
- China
- Prior art keywords
- gas
- crude
- heat
- circulation
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/067—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle the combustion heat coming from a gasification or pyrolysis process, e.g. coal gasification
-
- 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]
-
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Industrial Gases (AREA)
Abstract
The present invention relates to directly cooling coarse coal gas for gasification of an airflow bed. According to the invention, a IGCC (Integrated Gasification Combined Cycle ) plant will propose that a cooler/a saturator cycle is arranged in a coal gas purifier (washing by carbinol at a low temperature), thereby, the heat of water vapour bound in the coal gas may be guided around the coal gas purifier optimum, and the condensation loss of the present scheme is minimized. Furthermore, it is possible to reduce pressure loss in coal gas synthesis path by directly cooling or vaporizing, and theefficiency of the IGCC plant is maximized. .
Description
Technical field
The present invention relates to a kind of method that is used for handling crude-gas at IGCC (Integrated Gasification CombinedCycle-integrated gasification combined cycle plants) equipment.
Background technique
If the crude-gas that in gasification, forms wet dedusting and halogen wash with alkali cleaning after, in the crude-gas conversion, further handle, and and then carry out gas purification, the crude-gas that then must will come out from gas conversion cools off, and corresponding heat is drained.
Wherein operational temperature levels is to be determined by the water vapor partial pressure in the crude-gas.Particularly when using IGCC (Integrated Gasification Combined Cycle-integrated gasification combined cycle plants), aspect the efficient optimization, effort feeds back to the heat of output in the miscellaneous equipment parts effectively, and makes great efforts to make the minimise loss of pressure of coal gas aspect.
Has CO for using under the situation that has full-chilled entrained flow gasification in consideration
2The IGCC of segregating unit, being used for full-chilled process water temperature can influence total efficiency.
In use up to the present, the heat that should drain in the rough coal air-flow after the crude-gas conversion is to realize by a large amount of indirect heat exchangers, and these heat exchangers cause high pressure loss on coal gas cooling line.
In addition, for having full-chilled entrained flow gasification, with cold deionized water supply process water circulation, wherein, in other process, process water for example carried out further preheating with low pressure steam before Quench.
Summary of the invention
Task of the present invention is to improve the efficient of IGCC equipment.
This task is accomplished by the method with the described feature of claim 1.
By cooler/saturator circulation is set on gas cleaning device (low-temperature rectisol (rectisol)), the heat as the combination of water vapor composition in coal gas can be guided around gas cleaning device best, and can be with the condensation minimization of loss that in scheme up till now, is occurred.Therefore in addition, the pressure loss in the synthetic gas process is reduced by direct cooling or evaporation, and makes the maximizing efficiency of IGCC equipment.Advantageously, after the crude-gas conversion with the single-stage of crude-gas or multistage direct cooling with combine by the indirect heat output of cooler/saturator circuit.This makes the quantity that can reduce heat exchanger in the crude-gas side, and therefore also reduces the pressure loss of crude-gas cooling line.In addition,, and be transported to the excessive circulating water that flows out in the process water circulation on gasification island the supplementing water preheating by direct cooling.Therefore, for example can reduce the heating of process water by low pressure steam, and improve the total efficiency of IGCC equipment in gasification inside, island.Can avoid when the process water preheating, in heat exchanger, taking place the danger of precipitation in addition.
Favourable improvement project to the application's theme is illustrated in the dependent claims.
Description of drawings
Embodiments of the invention are being described in detail by accompanying drawing for understanding in the desired scope subsequently.
These accompanying drawings are:
Fig. 1: the principle sketch of realizing IGCC of the present invention power station.
Fig. 2: according to the principle sketch of crude-gas cooling of the present invention.
Fig. 3: according to the special scheme of cooler circuit of the present invention.
Identical in the accompanying drawings reference character is represented identical parts.
Reference numerals list
1-5,2-5, the circulation of 3-5 heat exchanger crude-gas cooling/saturator
1-18,2-18 gas cleaning device (low-temperature rectisol)
1-20 contains charcoal fuel, solid or fluid
1-21 has Quench section and halogen and washes gasification reactor with alkali cleaning
The 1-22 synthetic gas
1-23 CO transforming section
1-24 crude-gas cooling unit
1-25 combustion gas and steam power station (GuD)
The 1-26 electric energy, electric current
1-27 waste water
The 1-29 make-up water
Crude-gas after 2-1, the 3-1 CO conversion
2-2,3-2,3-3 cooling battery
2-3,3-7 deliver to the process water circulation on gasification island
Circulation provides supplementing water to cooler for 2-4,3-10
Scrubbed gas behind the 2-6 process gas cleaning device (low-temperature rectisol)
The 2-7 saturator
Circulation provides deionized water (DI) to 2-8 to saturator
3-4 is used to produce the heat exchanger of low pressure (ND) steam
The gas condensed water of 3-6 deposition
The 3-9 quantity of heat given up is used for the preheating of GuD condensed water
3-11 delivers to the purification stream of waste treating equipment
The part of the 3-12 second cooler circuit circulating water
2-13,3-13 are transported to the cooling of gas cleaning device (low-temperature rectisol)
Crude-gas
2-14,3-14, the circulation of 3-15 pump group cooler
2-16,3-16 heat exchanger produce medium pressure steam
The circulation of 2-19 pump group saturator
2-30 is used for the scrubbed gas of combustion gas turbine
The gas condensed water of 3-6 deposition
Embodiment
In order in gasification reactor (1-21), to gasify, the carbon-containing fuel (1-20) of solid or fluid is transported in the IGCC power station shown in Figure 1 (Integrated GasificationCombined Cycle-integrated gasification combined cycle plants).In gasification reactor, produce the synthetic gas that is rich in carbon monoxide and hydrogen.This synthetic gas is transported to the Quench section.In this Quench section, preferably synthetic gas is cooled off in known manner by excessively spraying into process water (1-29).After the water Quench, synthetic gas is transported to wet dust removal apparatus and halogen is washed and alkaline cleaner (Venturi (venturi)) in.Then that water vapor is saturated dustless coal gas (1-22) then is transported in the CO transducer (1-23).The water that is used for Quench in described Quench section carries the gasification residue, ashes for example, and be transported in the waste treating equipment (1-27).In crude-gas cooling unit (1-24), be cooled to for (1-18) suitable temperature of subsequently gas cleaning device (low-temperature rectisol) through the synthetic gas (2-1,3-1) of conversion.Cold supplementing water (2-4,3-10) is transported in the crude-gas cooling unit (1-24), and its water (2-3,3-7) as heating is transported in the process water circulation on gasification island (1-29).The process water circulation on gasification island provides make-up water to be used for described Quench.Heat is outputed to the saturator (1-7) by heat exchanger (1-5) from crude-gas cooling unit (1-24).In this saturator, the scrubbed gas (2-6) that has passed through gas cleaning device (1-18) is heated with saturated.The scrubbed gas (2-30) that leaves saturator is transported in the combustion gas turbine of combustion gas and steam power station (1-25).This power station provides electric energy (1-26) at output terminal.Deionized water (2-8) is provided for the circulation of saturator.That is to say that in this device through gas cleaning device the time, the heat of crude-gas is advanced around gas cleaning device.In special scheme, come the condensed water of preheated fuel gas and steam power station (1-25) with heat outputting (3-9).
Fig. 2: in the first order (2-16), take out the heat that is in the high-temperature level, press (MD) steam with in producing by the crude-gas (2-1) that comes out from CO transforming section (1-23).In cooling battery (2-2), directly water cools off crude-gas subsequently.By pump group (2-14) water in the bottom deposit of cooling battery is moved in circulation, and cooling in one or more heat exchanger (2-5), and be transported to again in the cooling battery at top.From the cooler circulation, take out (2-3) and be the necessary make-up water (1-29) that gasifies.Give the cooler periodical feeding by the condensed water and the supplementing water (2-4) that deposit in cooling battery, described condensed water is owing to the saturation point that does not reach crude-gas produces.Being discharged into cooler circuit heat from coal gas stream directly is sent to the saturator circulation by heat exchanger (2-5).This saturator circuit task is that the cold scrubbed gas (2-6) that will come out from gas cleaning device (2-18) heats saturator group (2-7), and makes it saturated with water vapor.Give the saturator periodical feeding at this by deionized water (2-8).
The device of Fig. 3 has the particularly advantageous wiring diagram of cooler circuit:
Take out the heat that (3-16) is in the high-temperature level by the crude-gas that comes out from the CO transforming section (3-1), press (MD) steam with in producing.By two cooler circulations (3-2,3-3), from crude-gas, discharge heat further in the series connection of coal gas side.The circulating water cooling crude-gas that enters first cooling battery (2-2) is more than saturation point.From circulating water flow, take out the gas condensed water of (3-6) deposition, and mix, and be introduced in the process water circulation on (3-7) gasification island with the part (3-12) of the described second cooler circuit circulating water.Preferably in a plurality of level, particularly in two levels, finish quantity of heat given up from the described first cooler circuit circulating water.In the embodiment shown, in the first order,, in the second level, pass through the described saturator circulation of heating (3-5) by producing (3-4) low pressure (ND) steam.In this case, controlling heat by the generation of low pressure steam outputs in the saturator circulation.Realize the bridge joint of necessary pressure reduction by pump group (3-14).
Form described second cooler circulation by cooling battery (3-3), pump (3-15) and one or more heat conductor (3-9).The temperature levels of the circulating water (3-8) that comes out from this cooling battery low than the circulation of first cooler.Preferably described heat output is used for GuD condensed water preheating (3-9).And then cold supplementing water (3-10) is transported in the circulating water, described supplementing water is that gasification is necessary as make-up water (1-29).It had additionally cooled off circulating water before entering into cooling battery, and realized from crude-gas (2-1,3-1) the maximum heat of middle discharge by directly cooling off.By taking out a part stream (3-11+3-12), the gas condensed water that this part stream equals to deposit and the flow of supplementing water in the circulating water that in cooling battery, deposits.Take out a part stream (3-11) again from described part stream, this part stream is used to reduce ammonia, and the ammonia concentration in the whole system is minimized.To purify stream (3-11) is transported in the waste treating equipment.With the stream (3-12) of remainder and in the circulation of first cooler gas condensed water of deposition mix (3-6), and be incorporated in the process water circulation and be used for gasification.
Chilled rough coal air-flow according to the requirement of gas purification further cool off (2-17,3-17), and continue to be transported to (3-13) gas cleaning device (low-temperature rectisol) (2-18,3-18) in.
Provided special scheme of the present invention by IGCC (Integrated Gasification Combined Cycle-integrated gasification combined cycle plants) device, wherein (2-1's rough coal air-flow 3-1) directly is cooled by cooling battery after the CO conversion.
Claims (10)
1. be used to handle the method for crude-gas, wherein
Including the gasification installation that contains charcoal fuel (1-20) and rearmounted combustion gas and steam power station (GuD) the IGCC equipment (1-25) that is used for fluid or solid, the crude-gas that will obtain in gasification installation (2-1,3-1) guiding is by cooling battery (2-2)
Described cooling battery (2-2) forms the cooler circulation together with heat exchanger (1-5,2-5,3-5),
From crude-gas (2-1,3-1), take out heat by described cooler circulation,
Chilled crude-gas process gas cleaning device (1-18,2-18),
Described heat exchanger (1-5,2-5,3-5) forms the saturator circulation together with saturator (1-7,2-7), and
The heat of automatic heat-exchanger flows to the crude-gas (2-6) that has purified in the future in described saturator.
2. the method for claim 1 is characterized in that, supplementing water (2-4) is provided for described cooler circulation.
3. according to each described method in the aforementioned claim, it is characterized in that, will flow to vaporizer as make-up water (1-29) at the water of the bottom deposit of cooling battery and be used for Quench.
4. according to each described method in the aforementioned claim, it is characterized in that, provide deionized water (DI) (2-8) for described saturator circulation.
5. according to each described method in the aforementioned claim, it is characterized in that, in described cooler circulation, before the heat exchanger of saturator circulation (3-5), realize heat output (3-4), to produce low pressure (ND) steam.
6. method as claimed in claim 5 is characterized in that, controls heat output in the saturator circulation by the generation of low pressure (ND) steam.
7. according to each described method in the aforementioned claim, it is characterized in that, surpass saturation point ground cooling crude-gas.
8. according to each described method in the aforementioned claim, it is characterized in that, crude-gas cools off in second cooling battery (3-3) afterwards and at gas cleaning device (1-18,2-18) before in cooling battery (3-2), wherein pass through by the formed second cooler circulation heat outputting of described second cooling battery (3-3), pump (3-15) and heat conductor (3-9), especially for the GuD condensed water is carried out preheating.
9. method as claimed in claim 8 is characterized in that, supplementing water (3-10) is provided for described second cooler circulation.
10. according to each described method in the aforementioned claim, it is characterized in that, before being transported to cooling battery (2-2,3-2) kind, from crude-gas (2-1,3-1), take out heat, with pressure (MD) steam (2-16,3-16) in producing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008047930.6 | 2008-09-19 | ||
| DE200810047930 DE102008047930B4 (en) | 2008-09-19 | 2008-09-19 | Direct raw gas cooling in the flow stream gasification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101676523A true CN101676523A (en) | 2010-03-24 |
| CN101676523B CN101676523B (en) | 2014-07-30 |
Family
ID=41794829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910173490.4A Expired - Fee Related CN101676523B (en) | 2008-09-19 | 2009-09-18 | Directly cooling coarse coal gas for gasification of airflow bed |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101676523B (en) |
| DE (1) | DE102008047930B4 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010026172B4 (en) * | 2010-07-06 | 2018-04-26 | Siemens Aktiengesellschaft | Process for preventing deposits of carbonate-rich waters in the flow stream gasification |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4202167A (en) * | 1979-03-08 | 1980-05-13 | Texaco Inc. | Process for producing power |
| EP0127092B1 (en) * | 1983-05-31 | 1987-04-22 | Kraftwerk Union Aktiengesellschaft | Intermediate-power plant with an integrated coal-gasification installation |
| CN1045156A (en) * | 1989-02-23 | 1990-09-05 | 安塞国际投资有限公司 | The improvement of convolution gasification hybrid power generation station operation mobility |
| CN1056089A (en) * | 1991-05-25 | 1991-11-13 | 北京化工学院 | Utilize heat pump to reclaim the method for conversion process waste heat |
| US5715671A (en) * | 1991-03-11 | 1998-02-10 | Jacobs Engineering Limited | Clean power generation using IGCC process |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3327367A1 (en) * | 1983-07-29 | 1985-02-14 | Kraftwerk Union AG, 4330 Mülheim | Medium-load power station with an integrated coal gasification plant |
-
2008
- 2008-09-19 DE DE200810047930 patent/DE102008047930B4/en not_active Expired - Fee Related
-
2009
- 2009-09-18 CN CN200910173490.4A patent/CN101676523B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4202167A (en) * | 1979-03-08 | 1980-05-13 | Texaco Inc. | Process for producing power |
| EP0127092B1 (en) * | 1983-05-31 | 1987-04-22 | Kraftwerk Union Aktiengesellschaft | Intermediate-power plant with an integrated coal-gasification installation |
| CN1045156A (en) * | 1989-02-23 | 1990-09-05 | 安塞国际投资有限公司 | The improvement of convolution gasification hybrid power generation station operation mobility |
| US5715671A (en) * | 1991-03-11 | 1998-02-10 | Jacobs Engineering Limited | Clean power generation using IGCC process |
| CN1056089A (en) * | 1991-05-25 | 1991-11-13 | 北京化工学院 | Utilize heat pump to reclaim the method for conversion process waste heat |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101676523B (en) | 2014-07-30 |
| DE102008047930B4 (en) | 2015-05-13 |
| DE102008047930A1 (en) | 2010-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1982053B1 (en) | Method for increasing the efficiency of an integrated gasification combined cycle | |
| US10208948B2 (en) | Solid fuel grade gasification-combustion dual bed poly-generation system and method thereof | |
| US8371099B2 (en) | Power generation system incorporating multiple Rankine cycles | |
| SU1452490A3 (en) | Half-peak-load power station | |
| EP1982052B1 (en) | Integrated gasification combined cycle with preheating of nitrogen / oxygen from air separator | |
| US5265410A (en) | Power generation system | |
| CA2720387C (en) | Gasification power generation system provided with carbon dioxide separation and recovery device | |
| KR101609815B1 (en) | Biomass syngas purification process under negative pressure for producing oil and system configuration thereof | |
| JPH0472045B2 (en) | ||
| CN102186956B (en) | Methods and systems for integrated boiler feed water heating | |
| CN109181776B (en) | Coal-based poly-generation system and method for integrated fuel cell power generation | |
| CN106497609A (en) | Band CO2Gasification furnace coal powder conveying system and method in the IGCC system of trapping | |
| KR101609817B1 (en) | Biomass syngas purification process under positive pressure for producing oil and system configuration thereof | |
| CN103710046B (en) | Gasification system for carbon-containing fuel | |
| CN101676523B (en) | Directly cooling coarse coal gas for gasification of airflow bed | |
| CN110218583B (en) | Integrated coal gasification fuel cell power generation system and method adopting desulfurization post-conversion process | |
| CN102234547A (en) | Water gas shift reactor system for integrated gasification combined cycle power generation systems | |
| CN110257106B (en) | Integrated coal gasification fuel cell power generation system and method adopting coal water slurry gasification | |
| CN109350988B (en) | CO (carbon monoxide) 2 IGFC power generation system and method with liquefaction process and cryogenic air separation coupling | |
| CN109054902A (en) | A kind of coal heats the coupling technique of electric methanol | |
| CA2689192A1 (en) | Systems for reducing cooling water and power consumption in gasification systems and methods of assembling such systems | |
| CN104987280B (en) | Coal gasification methyl alcohol preparing system and method with carbon capturing and waste heat power generation being coupled | |
| CN106761990B (en) | A kind of apparatus and method to be generated electricity using IGCC low grade residual heats | |
| CN216720932U (en) | Frequency modulation power supply and power generation system based on internal combustion engine | |
| KR20140041232A (en) | Gasifier including combined syngas cooler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20210918 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |