CN109135832A - A kind of water-coal-slurry gasification method and device recycling carbon black water waste heat - Google Patents
A kind of water-coal-slurry gasification method and device recycling carbon black water waste heat Download PDFInfo
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- CN109135832A CN109135832A CN201811115203.XA CN201811115203A CN109135832A CN 109135832 A CN109135832 A CN 109135832A CN 201811115203 A CN201811115203 A CN 201811115203A CN 109135832 A CN109135832 A CN 109135832A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0959—Oxygen
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention discloses the water-coal-slurry gasification method and device of a kind of recyclable carbon black water waste heat, described device includes for carrying out the gasification furnace that gasification process generates carbon black water and crude synthesis gas to water-coal-slurry, it is connected to the gasification furnace and is used to carry out carrying out washing treatment to the crude synthesis gas to generate the scrubbing tower of synthesis gas, and be connected to the gasification furnace and scrubbing tower and be used to carry out the water-coal-slurry heater that heat without phase-change exchanges processing to the carbon black water and water-coal-slurry.The present invention in traditional coal-water-slurry gasification installation by being arranged a water-coal-slurry heater, high temperature carbon black water from scrubbing tower and gasification furnace can be carried out heat without phase-change with water-coal-slurry and exchanged by the water-coal-slurry heater, this makes the high temperature section heat of carbon black water be fully utilized, to reduce synthesis gas coal consumption and oxygen consumption, keep the production cost of synthesis gas lower, improves efficiency of energy utilization.
Description
Technical field
The present invention relates to coal water slurry gasification field more particularly to it is a kind of recycle carbon black water waste heat water-coal-slurry gasification method and
Device.
Background technique
Entrained flow gasification technique mainly includes using water-coal-slurry and coal dust as the gasification of raw material, synthesizes air cooling and washing, with
And three units of carbon black water process.Raw material and gasifying agent (oxygen etc.) are in the presence of water vapour or water in airflow bed gasification furnace
It is reacted, crude synthesis gas (main component CO, H come out from gasification furnace shock chamber2And CO2Deng) solid containing thick slag, fine ash etc.
Body particulate matter, and the in-furnace temperature that gasifies is very high, generally about 1300 DEG C.The crude synthesis gas can remove it after scrubbing tower washs
In solid particulate matter to get arrive synthesis gas.In order to remove the solid particulate matter come out out of gasification furnace, while object in recovery furnace
Expect high-grade heat, guarantee that the solid content in gasification installation synthesis gas out is as low as possible, general coal gasification chilling technology is using " sharp
The change returned from CO converting means is added in the processing method of cold house+synthesis gas washing tower ", the general top layer of synthesis gas washing tower
Condensate liquid (or supplement fresh water) is changed, what middle lower layer was added is the lower synthesis gas of temperature returned from carbon black water treatment unit
Washing water (i.e. buck).Each of gasification furnace and synthesis gas processing unit water washing or separation equipment can be discharged greatly out
Measure carbon black water carbon elimination usage on black water unit, carbon black water is big and temperature is higher, carbon black water need to be back to after processing gasification and
Synthesis gas washing processing unit is reused.It is right that the 1-4 grades of flash vessels for being therefrom pressed onto vacuum are arranged in general carbon black water treatment unit
Carbon black water after cooling is clarified through subsider afterwards, buck (out subsider be clarified) by with 1-3 grades of flash vessels flash distillations
Steam directly contact or mediate contact heating after be back to synthesis gas washing tower as synthesis gas washing water.
In air-flow bed coal-gasification furnace, partial oxidation reaction occurs after feed coal and oxygen mix, to guarantee the suitable of reaction
Benefit carries out and ash content forms the smooth deslagging after slag, must keep the condition of high temperature (about 1300 in gasification furnace (gasification reactor)
DEG C), and be this charging fed with raw material water-coal-slurry, it is typically in normal temperature state, since raw material water-coal-slurry enters gasification furnace
It needs to be warming up to reaction in furnace room temperature behind combustion chamber, which then leans on coal dust or syngas combustion to supply, this does not only result in height
The syngas combustion of energy level wastes, and gasified boiler system cascaded utilization of energy is unreasonable, and gasification consumption indicators are low, in synthesis gas
CO2Content is high.
Traditional air-flow bed coal-gasification process flow be by from the charcoal carbon black water that gasification furnace and synthesis gas washing pond come out into
The flash distillation of row multi-step pressure reduction settles clarification and filtering into subsider again after reducing carbon black coolant-temperature gage, according to gasifier operation pressure
Height, corresponding matched flash system is generally 1-5 grade, flashes can system (including auxiliary device such as heat exchanger, cooler
Deng and pipe-line system) it is complicated, land occupation is huge, initial investment in fixed assets is high, system control sytsem is complicated and cumbersome；Carbon black
Water can not be recycled through the latent heat of phase change of multistage flash distillation processing water, while carbon black water contains either with or without by gasification reaction conversion
Carbon is not efficiently used, and energy utilization efficiency is lower.
Therefore, the existing technology needs to be improved and developed.
Summary of the invention
In view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of water-coal-slurry for recycling carbon black water waste heat
Gasification process and device, it is intended to solve existing coal-water slurry gasification efficiency of energy utilization difference and coal water slurry gasification cost compared with
Problem high, complicated for operation.
Technical scheme is as follows:
A kind of gasification installation of the water-coal-slurry of recyclable carbon black water waste heat, wherein including for carrying out gasification process to water-coal-slurry
The gasification furnace for generating carbon black water and crude synthesis gas is connected to the gasification furnace and is used to carry out carrying out washing treatment to the crude synthesis gas
The scrubbing tower of synthesis gas is generated, and is connected to the gasification furnace and scrubbing tower and is used to carry out the carbon black water and water-coal-slurry
The water-coal-slurry heater of heat exchange processing, the water-coal-slurry are entered in the water-coal-slurry heater by pipeline without phase-change, warp
The heat for crossing acquisition carbon black slurry after heat exchange without phase-change is handled, which enters, carries out gasification process in the gasification furnace.
The coal water slurry gasifying device of the recyclable carbon black water waste heat, wherein described device further includes and the water coal
Slurry heater is connected to and is used to carry out the carbon black water and buck the grey water heater of heat exchange processing without phase-change, the ash
Water heater one end is connected to by pipeline with a buck reserve tank, and the ash water heater other end passes through pipeline and the washing
Tower connection.
The coal water slurry gasifying device of the recyclable carbon black water waste heat, wherein described device further includes and the buck
Heater is connected to and is used to carry out the carbon black water and supplement water the supplement water preheater of heat exchange processing without phase-change, described
Supplement water preheater one end by pipeline with one supplement water reserve tank be connected to, the supplement water preheater other end pass through pipeline and
The scrubbing tower connection.
The coal water slurry gasifying device of the recyclable carbon black water waste heat, wherein described device further includes and the supplement
Water preheater, which is connected to and is used to carry out the carbon black water solid-liquid separation treatment, obtains the subsider of carbon black slurry and buck, described heavy
Drop trench bottom is communicated with one for carrying out the filter press of filters pressing processing to carbon black slurry by pipeline, and the subsider upper end passes through pipe
Road is communicated with one for storing the buck reserve tank of buck.
The coal water slurry gasifying device of the recyclable carbon black water waste heat, wherein the gasification furnace bottom is connected by pipeline
A logical lock hopper, the lock hopper underface are provided with the slag bath for accepting pulp water, and the slag bath passes through pipeline and the water-coal-slurry
Heater connection.
The coal water slurry gasifying device of the recyclable carbon black water waste heat, wherein the gasification furnace and the scrubbing tower it
Between be additionally provided with a Quench water pump.
A kind of water-coal-slurry gasification method of recyclable carbon black water waste heat, wherein comprising steps of
Water-coal-slurry is passed through in water-coal-slurry heater and carries out heat without phase-change with the carbon black water in gasification furnace and scrubbing tower
Exchange obtains preheating water-coal-slurry；
The preheating water-coal-slurry is passed through in the gasification furnace by pipeline and carries out gasification process generation crude synthesis gas and carbon black water；
The crude synthesis gas is passed through in the scrubbing tower by pipeline and carries out carrying out washing treatment, obtains the conjunction without solid particulate matter
At gas.
The water-coal-slurry gasification method of the recyclable carbon black water waste heat, wherein the carbon black water adds into water-coal-slurry
Temperature before hot device is 220-270 DEG C, and the carbon black water is carrying out the temperature after heat exchanges without phase-change with the water-coal-slurry
It is 120-220 DEG C.
The water-coal-slurry gasification method of the recyclable carbon black water waste heat, wherein described that the crude synthesis gas is passed through into pipe
The step of road, which is passed through in the scrubbing tower, carries out carrying out washing treatment, obtains the synthesis gas without solid particulate matter specifically includes:
The carbon black water is passed through in grey water heater and carries out heat without phase-change with the buck being passed through in advance and exchange to be preheated
Buck；
The carbon black water is passed through supplement water preheater and carries out heat without phase-change with the supplement water being passed through in advance and is exchanged, is obtained pre-
Vulcanize water-filling；
The preheating buck and preheating supplement water are passed into the scrubbing tower by different pipelines, to being passed through in scrubbing tower
Crude synthesis gas is washed, and the synthesis gas without solid particulate matter is obtained.
The water-coal-slurry gasification method of the recyclable carbon black water waste heat, wherein the carbon black water is entering buck heating
Temperature before device is 120-220 DEG C, and the carbon black water is 85- carrying out the temperature after heat exchange without phase-change with the buck
110℃；The carbon black water enter supplement water preheater before temperature be 80-120 DEG C, the carbon black water with the supplement
The temperature that water carries out after heat exchange without phase-change is 50-100 DEG C.
The utility model has the advantages that the present invention in traditional coal-water-slurry gasification installation by being arranged a water-coal-slurry heater, the water coal
High temperature carbon black water from scrubbing tower and gasification furnace can be carried out heat without phase-change with water-coal-slurry and exchanged by slurry heater, this makes carbon
The high temperature section heat in Heisui River is fully utilized, to reduce synthesis gas coal consumption and oxygen consumption, keeps the production cost of synthesis gas lower, mentions
High efficiency of energy utilization, meanwhile, the present invention can avoid using take up an area huge flash distillation can system and and pipe-line system, cancel high
The multi-stage flash systems such as flash tank, vacuum flasher are pressed, process flow is simple, further reduced the initial fixation of gasification installation
Assets investment and plant area.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing coal water slurry gasifying device.
Fig. 2 is a kind of structural representation of the coal water slurry gasifying device preferred embodiment of recyclable carbon black water waste heat of the present invention
Figure.
Fig. 3 is a kind of flow chart of the water-coal-slurry gasification method preferred embodiment of recyclable carbon black water waste heat of the present invention.
Specific embodiment
The present invention provides the water-coal-slurry gasification method and device of a kind of recyclable carbon black water waste heat, to make mesh of the invention
, technical solution and effect it is clearer, clear, the present invention is described in more detail below.It should be appreciated that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, raw material water-coal-slurry mixes in gasification furnace with oxygen in conventional air bed coal-gasification process flow
After partial oxidation reaction occurs, for the smooth deslagging formed after slag gone on smoothly with ash content for guaranteeing reaction, in gasification furnace
It must keep the condition of high temperature (about 1300 DEG C), and be this charging of charging with raw material water-coal-slurry, be typically in normal temperature state, by
Need to be warming up to reaction in furnace room temperature after raw material water-coal-slurry enters gasification furnace combustion chamber, which then leans on coal dust or synthesis gas
Burning supply, this causes the synthesis gas of high level to waste, and gasified boiler system cascaded utilization of energy is unreasonable.
And in conventional air bed coal-gasification process flow, due to the carbon black water come out from gasification furnace and scrubbing tower
Big and temperature is higher, and the carbon black water needs to carry out multi-step pressure reduction flash distillation process, enters back into sedimentation after reducing carbon black coolant-temperature gage
It is clarified and is filtered in slot, according to the height of gasifier operation pressure, corresponding matched flash system is generally 1-5 grades,
Flash can system (including auxiliary device such as heat exchanger, cooler etc. and pipe-line system) complexity, huge, the initial fixed assets of land occupation
Investment is high, system control sytsem is complicated and cumbersome.
Based on the problems of existing conventional air bed coal-gasification technique, the present invention is provided more than a kind of recyclable carbon black water
The coal water slurry gasifying device of heat, as shown in Fig. 2, the coal water slurry gasifying device includes raw for carrying out gasification process to water-coal-slurry
At the gasification furnace 10 of carbon black water and crude synthesis gas, it is connected to the gasification furnace and is used to carry out carrying out washing treatment to the crude synthesis gas
Generate the scrubbing tower 20 of synthesis gas, and be connected to the gasification furnace and scrubbing tower and be used for the carbon black water and water-coal-slurry into
The row water-coal-slurry heater 30 that heat exchange is handled without phase-change, the water-coal-slurry enter the water-coal-slurry heater by pipeline
In, the heat that carbon black water is obtained after the processing of heat exchange without phase-change, which enters, carries out gasification process in the gasification furnace.
Further, in the present invention, can enter gasification installation progress gasification process is not limited only to water-coal-slurry, further includes
By hydrocarbon slurry etc., the gasification furnace can carry out gasification process to water-coal-slurry or hydrocarbon slurry and generate synthesis gas
(CO+H2), and during gasification process by high-temperature gasification reaction convert remaining carbon can with melt slag it is cooling, close
High temperature carbon black water is formed at the water during gas washing.
Specifically, the high temperature carbon black water from gasification furnace and scrubbing tower adds with raw material water-coal-slurry in the water-coal-slurry first
Heat without phase-change is carried out in hot device to exchange, obtain high temperature carbon black water partial heat water-coal-slurry then enter in gasification furnace with oxygen
Partial oxidation reaction is completed in gas mixing.The present invention is by one water-coal-slurry heater of setting, by the high temperature of gasification furnace out and scrubbing tower
Carbon black water is used to exchange heat with raw material water-coal-slurry, so that the high temperature section sensible heat of high temperature carbon black water makes full use of, reduces the conjunction of high level
At bottle coal consumption and oxygen consumption, system energy utilization efficiency is improved.
Preferably, temperature of the carbon black water before entering water-coal-slurry heater is 220-270 DEG C, and the carbon black water exists
Carrying out the temperature after heat exchange without phase-change with the water-coal-slurry is 120-220 DEG C.
As a wherein embodiment, as shown in Fig. 2, the coal water slurry gasifying device further includes heating with the water-coal-slurry
Device is connected to and is used to carry out the carbon black water and buck the grey water heater 40 of heat exchange processing without phase-change, and the buck adds
Hot device one end is connected to by pipeline with a buck reserve tank 50, and the ash water heater other end passes through pipeline and the scrubbing tower
Connection.
Preferably, temperature of the carbon black water before entering grey water heater is 120-220 DEG C, the carbon black water with
The temperature that the buck carries out after heat exchange without phase-change is 85-110 DEG C.
As a wherein embodiment, as shown in Fig. 2, the coal water slurry gasifying device further includes and the grey water heater
It is connected to and is used to carry out the carbon black water and supplement water the supplement water preheater 60 of heat exchange processing without phase-change, the supplement
Water preheater one end is connected to by pipeline with a supplement water reserve tank 70, and the supplement water preheater other end passes through pipeline and institute
State scrubbing tower connection.
Preferably, the carbon black water is 80-120 DEG C entering the temperature before supplementing water preheater, and the carbon black water exists
Carrying out the temperature after heat exchange without phase-change with the supplement water is 50-100 DEG C.
Specifically, the present invention is made by the way that grey water heater and supplement water preheater are arranged in coal water slurry gasifying device
Buck and keep the skin wet that heat exchanges without phase-change for the other progress with the carbon black water, to obtain the middle low-temperature heat quantity of carbon black water,
It is entered in scrubbing tower after the buck and supplement water acquisition carbon black water heat and the crude synthesis gas is washed, while benefit
It is used to maintain the temperature operating parameter of wash tower bottoms and gasification furnace consistent with stable operation operating condition with the carbon black water heat of acquisition,
Adverse effect is generated to shock chamber's operation in gasification furnace to avoid Quench coolant-temperature gage excessively high.
The present invention to from wash tower bottoms and gasification furnace carbon black water high temperature section and middle low-temperature zone sensible heat carry out it is reasonable
Sufficient cascade utilization does not have latent heat when undergoing phase transition of water when black water flash to waste, system for gasified boiler system
Efficiency of energy utilization is improved, and chilled water operating parameter can be adjusted effectively, and the operating flexibility of coal slurry gasifier is bigger,
The stable operation state of gasification furnace and synthesis gas washing tower can effectively be maintained.
Meanwhile the present invention avoid using take up an area huge flash distillation can system and its auxiliary device (heat exchanger, cooler) and
Pipe-line system cancels the multi-stage flash systems such as hp flash drum, vacuum flasher, and process flow is simple, further reduced gas
Disguise the initial investment in fixed assets set and plant area；Because process flow simplify brought by other beneficial effects further include as
Apparatus control system is simplified, operation controls to adjust simplified, device operation is more convenient etc..
Further, in the present invention, the coal water slurry gasifying device further includes being connected to simultaneously with the supplement water preheater
The subsider 80 of carbon black slurry and buck is obtained for carrying out solid-liquid separation treatment to the carbon black water, the sedimentation trench bottom passes through
Pipeline is communicated with one for carrying out the filter press 90 of filters pressing processing to carbon black slurry, and the filter press is connected by pipeline to be used to store up
Deposit the filtrate reserve tank 100 of filtrate.
Further, the gasification furnace bottom is connected to a lock hopper 110 by pipeline, and setting is useful immediately below the lock hopper
In the slag bath 120 for accepting pulp water, the slag bath is connected to by pipeline with the water-coal-slurry heater, the gasification furnace and described is washed
It washs and is additionally provided with a Quench water pump 130 between tower.
Specifically, with oxygen partial oxidation reaction occurs for the water-coal-slurry handled by water-coal-slurry heater in gasification furnace
Generate crude synthesis gas simultaneously entered in scrubbing tower by pipeline, wherein in the gasification furnace incomplete combustion reactant and mine
Slag enters lock hopper by pipeline and is drained into slag bath from the lock hopper, and the incomplete combustion reactant and slag are in slag bath
In be separated into solid slag and carbon black water after treatment, the solid slag outlet, and carbon black water is then and from washing in slag bath
It is then sequentially entered after the carbon black water mixing of tower bottom in the water-coal-slurry heater, ash content heater and supplement water preheater
Carry out the not covert heat exchange of different steps.
Further, the crude synthesis gas come out from gasification furnace shock chamber enters wash tower bottoms, in scrubbing tower
Solid particulate matter is eliminated after the preheating buck of downstream return and preheated supplement water washing to get the synthesis gas is arrived
Discharger system；Successively by the carbon black water of the water-coal-slurry heater, ash content heater and supplement water preheater processing
It enters in the subsider, the carbon black water is separated by solid-liquid separation in subsider by further, and clear buck then enters
Buck reserve tank, and the carbon black slurry for settling trench bottom then passes through filter press filters pressing and forms filter cake.
Based on above-mentioned apparatus, the present invention also provides a kind of water-coal-slurry gasification methods of recyclable carbon black water waste heat, wherein such as
Shown in Fig. 3, comprising steps of
S10, water-coal-slurry is passed through in water-coal-slurry heater and is carried out without phase-change with the carbon black water in gasification furnace and scrubbing tower
Heat exchange obtains preheating water-coal-slurry；
S20, the preheating water-coal-slurry is passed through progress gasification process generation crude synthesis gas and carbon in the gasification furnace by pipeline
Heisui River；
S30, it the crude synthesis gas is passed through in the scrubbing tower by pipeline carries out carrying out washing treatment, obtain without solid particulate matter
Synthesis gas.
Specifically, the high temperature carbon black water from gasification furnace and scrubbing tower adds with raw material water-coal-slurry in the water-coal-slurry first
Heat without phase-change is carried out in hot device to exchange, obtain high temperature carbon black water partial heat water-coal-slurry then enter in gasification furnace with oxygen
Partial oxidation reaction generation crude synthesis gas is completed in gas mixing and carbon black water, the crude synthesis gas are passed through the scrubbing tower by pipeline
Middle carry out carrying out washing treatment obtains the synthesis gas without solid particulate matter.The present invention is by one water-coal-slurry heater of setting, by outlet
The high temperature carbon black water for changing furnace and scrubbing tower is used to exchange heat with raw material water-coal-slurry, so that the high temperature section sensible heat of high temperature carbon black water is sufficiently sharp
With the synthesis gas coal consumption and oxygen for reducing high level consume, and improve system energy utilization efficiency.
Further, in the present invention, the step S30 is specifically included:
S31, it the carbon black water is passed through in grey water heater and carries out heat without phase-change with the buck being passed through in advance exchanges to obtain
Preheat buck；
S32, it the carbon black water is passed through to supplement water preheater and carries out heat without phase-change with the supplement water that is passed through in advance exchanges, obtain
Water is supplemented to preheating；
S33, the preheating buck and preheating supplement water are passed into the scrubbing tower by different pipelines, to being passed through scrubbing tower
In crude synthesis gas washed, obtain the synthesis gas without solid particulate matter.
Specifically, the present invention is made by the way that grey water heater and supplement water preheater are arranged in coal water slurry gasifying device
Buck and keep the skin wet that heat exchanges without phase-change for the other progress with the carbon black water, to obtain the middle low-temperature heat quantity of carbon black water,
It is entered in scrubbing tower after the buck and supplement water acquisition carbon black water heat and the crude synthesis gas is washed, obtained not
Synthesis gas containing solid particulate matter；It is used to maintain the temperature of wash tower bottoms and gasification furnace using the carbon black water heat of acquisition simultaneously
Operating parameter is consistent with stable operation operating condition, generates not to avoid Quench coolant-temperature gage excessively high to shock chamber's operation in gasification furnace
Good influence.
In conclusion the present invention in traditional coal-water-slurry gasification installation by being arranged a water-coal-slurry heater, the water coal
High temperature carbon black water from scrubbing tower and gasification furnace can be carried out heat without phase-change with water-coal-slurry and exchanged by slurry heater, this makes carbon
The high temperature section heat in Heisui River is fully utilized, to reduce synthesis gas coal consumption and oxygen consumption, keeps the production cost of synthesis gas lower, mentions
High system energy utilization efficiency, meanwhile, the present invention can avoid using take up an area huge flash distillation can system and and pipe-line system, take
Disappear the multi-stage flash systems such as hp flash drum, vacuum flasher, and process flow is simple, further reduced the initial of gasification installation
Investment in fixed assets and plant area.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can
With improvement or transformation based on the above description, all these modifications and variations all should belong to the guarantor of appended claims of the present invention
Protect range.
Claims (10)
1. a kind of gasification installation of the water-coal-slurry of recyclable carbon black water waste heat, which is characterized in that including for being carried out to water-coal-slurry
Gasification process generates the gasification furnace of carbon black water and crude synthesis gas, is connected to the gasification furnace and is used to carry out the crude synthesis gas
Carrying out washing treatment generates the scrubbing tower of synthesis gas, and is connected to and is used for the carbon black water and water with the gasification furnace and scrubbing tower
Coal slurry carries out the water-coal-slurry heater of heat exchange processing without phase-change, and the water-coal-slurry is heated by pipeline into the water-coal-slurry
In device, the heat that carbon black slurry is obtained after the processing of heat exchange without phase-change, which enters, carries out gasification process in the gasification furnace.
2. the coal water slurry gasifying device of recyclable carbon black water waste heat according to claim 1, which is characterized in that described device
It further include being connected to and being used for carry out the carbon black water and buck heat without phase-change with the water-coal-slurry heater and exchange to handle
Grey water heater, described ash water heater one end are connected to by pipeline with a buck reserve tank, the ash water heater other end
It is connected to by pipeline with the scrubbing tower.
3. the coal water slurry gasifying device of recyclable carbon black water waste heat according to claim 2, which is characterized in that described device
It further include be connected to and be used for the grey water heater to the carbon black water and supplement water progress heat is exchanged and handled without phase-change
Water preheater is supplemented, described supplement water preheater one end is connected to by pipeline with a supplement water reserve tank, the supplement water preheating
The device other end is connected to by pipeline with the scrubbing tower.
4. the coal water slurry gasifying device of recyclable carbon black water waste heat according to claim 3, which is characterized in that described device
It further include being connected to and being used for obtain carbon black slurry and ash to carbon black water progress solid-liquid separation treatment with the supplement water preheater
The subsider of water, the sedimentation trench bottom are communicated with one for carrying out the filter press of filters pressing processing, institute to carbon black slurry by pipeline
It states subsider upper end and is communicated with one for storing the buck reserve tank of buck by pipeline.
5. the coal water slurry gasifying device of recyclable carbon black water waste heat according to claim 1, which is characterized in that the gasification
Furnace bottom is connected to a lock hopper by pipeline, and the slag bath for accepting pulp water is provided with immediately below the lock hopper, and the slag bath passes through
Pipeline is connected to the water-coal-slurry heater.
6. the coal water slurry gasifying device of recyclable carbon black water waste heat according to claim 1, which is characterized in that the gasification
A Quench water pump is additionally provided between furnace and the scrubbing tower.
7. a kind of water-coal-slurry gasification method of recyclable carbon black water waste heat, which is characterized in that comprising steps of
Water-coal-slurry is passed through in water-coal-slurry heater and carries out heat without phase-change with the carbon black water in gasification furnace and scrubbing tower
Exchange obtains preheating water-coal-slurry；
The preheating water-coal-slurry is passed through in the gasification furnace by pipeline and carries out gasification process generation crude synthesis gas and carbon black water；
The crude synthesis gas is passed through in the scrubbing tower by pipeline and carries out carrying out washing treatment, obtains the conjunction without solid particulate matter
At gas.
8. the water-coal-slurry gasification method of recyclable carbon black water waste heat according to claim 7, which is characterized in that the carbon black
Temperature of the water before entering water-coal-slurry heater is 220-270 DEG C, and the carbon black water carries out without phase-change with the water-coal-slurry
Temperature after heat exchange is 120-220 DEG C.
9. the water-coal-slurry gasification method of recyclable carbon black water waste heat according to claim 7, which is characterized in that described by institute
It states crude synthesis gas and is passed through in the scrubbing tower by pipeline and carry out carrying out washing treatment, obtain the step of the synthesis gas without solid particulate matter
Suddenly it specifically includes:
The carbon black water is passed through in grey water heater and carries out heat without phase-change with the buck being passed through in advance and exchange to be preheated
Buck；
The carbon black water is passed through supplement water preheater and carries out heat without phase-change with the supplement water being passed through in advance and is exchanged, is obtained pre-
Vulcanize water-filling；
The preheating buck and preheating supplement water are passed into the scrubbing tower by different pipelines, to being passed through in scrubbing tower
Crude synthesis gas is washed, and the synthesis gas without solid particulate matter is obtained.
10. the water-coal-slurry gasification method of recyclable carbon black water waste heat according to claim 9, which is characterized in that the carbon
Temperature of the Heisui River before entering grey water heater is 120-220 DEG C, and the carbon black water is carrying out heat without phase-change with the buck
Temperature after amount exchange is 85-110 DEG C；The carbon black water is 80-120 DEG C entering the temperature before supplementing water preheater, institute
It is 50-100 DEG C that carbon black water, which is stated, carrying out the temperature after heat exchange without phase-change with the supplement water.
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