CN107129832A - Gasification furnace and coal gas processing system - Google Patents
Gasification furnace and coal gas processing system Download PDFInfo
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- CN107129832A CN107129832A CN201710513791.1A CN201710513791A CN107129832A CN 107129832 A CN107129832 A CN 107129832A CN 201710513791 A CN201710513791 A CN 201710513791A CN 107129832 A CN107129832 A CN 107129832A
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- nozzle
- gasification furnace
- coal
- heater
- gasification
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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
- C10J3/48—Apparatus; Plants
-
- 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
- C10J3/48—Apparatus; Plants
- C10J3/482—Gasifiers with stationary fluidised bed
-
- 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
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
- C10J3/56—Apparatus; Plants
-
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
- F22B1/1892—Systems therefor not provided for in F22B1/1807 - F22B1/1861
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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
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
- C10J2200/152—Nozzles or lances for introducing gas, liquids or suspensions
-
- 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
- C10J2300/0956—Air or oxygen enriched air
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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
-
- 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
- C10J2300/0973—Water
- C10J2300/0976—Water as steam
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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
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
-
- 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
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
- C10J2300/1615—Stripping
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
The invention provides a kind of gasification furnace and coal gas processing system, it is related to coal gas production processing technology field, the gasification furnace includes body of heater and burner hearth, and the top of body of heater is provided with the gas outlet for being used for exporting coal gas, the bottom of body of heater sets charging aperture, and the bottom of body of heater is provided with ash hole；Burner hearth includes emulsion zone and dilute-phase zone, and body of heater corresponding with dilute-phase zone is provided with the upper strata nozzle for being used for that gasifying agent to be imported to dilute-phase zone；Body of heater corresponding with emulsion zone is provided with the underlying nozzle for being used for that gasifying agent to be imported to emulsion zone.The gasification furnace gasification efficiency for alleviating prior art using the gasification furnace is low and pollutes the technical problem of environment, has reached the technique effect for improving coal gasification efficiency and reduction environmental pollution.
Description
Technical field
Processing technology field is produced the present invention relates to coal gas, more particularly, to a kind of gasification furnace and coal gas processing system
System.
Background technology
With the popularization of mechanical coal mining, fine coal and low-quality output of coal are increasing year by year, how using advanced technology, close
Reason, efficiently, contamination-freely using these coals be industry research hot issue.
Traditional gasification furnace inner bottom part is provided with gasifying agent nozzle at present, when gasifying agent from gasification furnace bottom is blown into gasification furnace
Burner hearth in after, fine coal floats to upper in gasification furnace and carries out gasification reaction.But be due to fine coal in gasification gradually
Rise, there is the not vaporized fine coal in part to be discharged with coal gas by the gas outlet on gasification furnace top, therefore, gasified
The gasification efficiency of fine coal is not high in journey, waste raw material, and due to gasification furnace can not abundant burning pulverized coal, pollute ring after discharge
Border.
The content of the invention
The first object of the present invention be provide gasification furnace, with the gasification furnace gasification efficiency for alleviating prior art it is low and pollution
The technical problem of environment.
The second object of the present invention is to provide coal gas processing system, to alleviate the gasification furnace gasification efficiency of prior art
The problem of low pollution environment caused and big coal gas wash cooling water consumption.
In order to realize the above-mentioned purpose of the present invention, spy uses following technical scheme：
A kind of gasification furnace, including body of heater and burner hearth, the top of the body of heater are provided with the gas outlet for being used for exporting coal gas, institute
The bottom for stating body of heater sets charging aperture, and the bottom of the body of heater is provided with ash hole；
The burner hearth includes emulsion zone and dilute-phase zone, and the body of heater corresponding with the dilute-phase zone, which is provided with, to be used for described
Dilute-phase zone imports the upper strata nozzle of gasifying agent；The body of heater corresponding with the emulsion zone, which is provided with, to be used to lead to the emulsion zone
Enter the underlying nozzle of gasifying agent.
Further, the upper strata nozzle is multiple and be evenly arranged in same plane in a ring.
Further, the underlying nozzle is multiple and be evenly arranged in same plane in a ring.
Further, the upper strata nozzle is austenitic stainless steel nozzle or Nickel-Based Steel nozzle；The underlying nozzle
For austenitic stainless steel nozzle or Nickel-Based Steel nozzle.
Further, the gasification furnace is pressurized fluidized bed gasifier.
Further, the operating pressure of the pressurized fluidized bed gasifier is 0.1~10MPa.
A kind of coal gas processing system, including above-mentioned gasification furnace.
Further, the upper strata nozzle connects gasification agent feeding device with the underlying nozzle, and the charging aperture is with adding
Device for coal is connected, and the gas outlet is connected with secondary conversion device, and the ash hole is connected with the grey lock hopper of collection；
Gas boiler, washing saturator and settling separation device are sequentially connected after the secondary conversion device；The coal system
Gas sequentially passes through gas boiler and washing saturator after being handled through secondary conversion device and outwards conveyed again.
Further, the secondary conversion device is replaced with cyclone dust collector.
Further, the washing saturator is replaced with dry-method dust-removal device.
Compared with the prior art, the present invention has the advantages that：
Two layers of nozzle for importing gasifying agent, i.e. upper strata nozzle and lower floor are provided in the gasification furnace provided in the present invention
Nozzle, upper strata nozzle is arranged at the dilute-phase zone on gasification furnace top, and underlying nozzle is arranged at the emulsion zone of gasification furnace bottom, gasifying agent
It is blown into by upper strata nozzle and underlying nozzle inside the burner hearth of gasification furnace, the gasifying agent that underlying nozzle is blown into makes fine coal expand rapidly
Dissipate, most of fine coal is gasified in the emulsion zone of gasification furnace, the fine coal not gasified on a small quantity floats upwards enters gasification furnace
Top dilute-phase zone, the gasifying agent being blown into by upper strata nozzle continues to gasify.Because the dilute-phase zone on gasification furnace top is also provided with gasification
Agent nozzle, while being passed through gasifying agent in bottom emulsion zone and top dilute-phase zone, can so make the powder for floating up to gasification furnace top
Coal also obtains sufficient gasification reaction, so as to improve the gasification efficiency of fine coal, reduces the discharge of fine coal, reduction environment is dirty
Dye.
The coal gas processing system that the present invention is provided includes above-mentioned gasification furnace, therefore, using the coal gas processing system pair
Coal carries out coal-producing gasification processing, can reach the rate of gasification for providing coal raw material and the purpose for reducing fine coal discharge.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation for the gasification furnace that the embodiment of the present invention one is provided；
Fig. 2 is the structural representation for the coal gas processing system that the embodiment of the present invention two is provided；
Fig. 3 is the structural representation for the coal gas processing system that the embodiment of the present invention three is provided；
Fig. 4 is the structural representation for the coal gas processing system that the embodiment of the present invention four is provided.
Icon：1- coal bunkers；2- fine coal lock hoppers；3- fine coal storage tanks；4- stokers；5- gasification furnaces；51- upper stratas nozzle；Under 52-
Layer nozzle；6- gasifying agent blenders；7- collection ash lock hopper；8- first collects ash can；9- secondary conversion stoves；10- second collects ash can；11-
Gas boiler；111- boiler-steam domes；12- washing saturators；13- flash tanks；14- subsiders；15- ash water tanks；16- deaerated water
Groove；17- mortar-troughs；18- knockout drums；19- cyclone dust collectors；20- dry-method dust-removal devices.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than indicate or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or implying relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
One aspect of the present invention provides a kind of gasification furnace, including body of heater and burner hearth, and the top of the body of heater is provided with use
In the gas outlet of output coal gas, the bottom of the body of heater sets charging aperture, and the bottom of the body of heater is provided with ash hole；
The burner hearth includes emulsion zone and dilute-phase zone, and the body of heater corresponding with the dilute-phase zone, which is provided with, to be used for described
Dilute-phase zone imports the upper strata nozzle of gasifying agent；The body of heater corresponding with the emulsion zone, which is provided with, to be used to lead to the emulsion zone
Enter the underlying nozzle of gasifying agent.
Two layers of nozzle for importing gasifying agent, i.e. upper strata nozzle and lower floor are provided in the gasification furnace provided in the present invention
Nozzle, upper strata nozzle is arranged at the dilute-phase zone on gasification furnace top, and underlying nozzle is arranged at the emulsion zone of gasification furnace bottom, gasifying agent
It is blown into by upper strata nozzle and underlying nozzle inside the burner hearth of gasification furnace, the gasifying agent that underlying nozzle is blown into makes fine coal expand rapidly
Dissipate, most of fine coal is gasified in the emulsion zone of gasification furnace, the fine coal not gasified on a small quantity floats upwards enters gasification furnace
Top dilute-phase zone, the gasifying agent being blown into by upper strata nozzle continues to gasify.Because the dilute-phase zone on gasification furnace top is also provided with gasification
Agent nozzle, while being passed through gasifying agent in bottom emulsion zone and top dilute-phase zone, can so make the powder for floating up to gasification furnace top
Coal also obtains sufficient gasification reaction, so as to improve the gasification efficiency of fine coal, reduces the discharge of fine coal, reduction environment is dirty
Dye.
As the preferred embodiment of the present invention, the upper strata nozzle is multiple and is evenly arranged in a ring same flat
Face.
Multiple upper strata nozzles are evenly arranged, and the uniformity of the gasification agent concentration in gasification furnace can be improved, so as to be conducive to
The reaction of gasifying agent and fine coal raw material.
As the preferred embodiment of the present invention, the underlying nozzle is multiple and is evenly arranged in a ring same flat
Face.
Multiple underlying nozzles are evenly arranged, and the uniformity of the gasification agent concentration in gasification furnace can be improved, so as to be conducive to
The reaction of gasifying agent and fine coal raw material.
As the preferred embodiment of the present invention, the upper strata nozzle is that austenitic stainless steel nozzle or Nickel-Based Steel spray
Mouth；The underlying nozzle is austenitic stainless steel nozzle or Nickel-Based Steel nozzle.
Austenitic stainless steels nozzle has preferable mechanical property, can bear the impacting with high pressure of gasifying agent air-flow, and difficult to understand
Family name's build stainless steel is convenient for machining, punching press and welding, have in oxidative environment excellent decay resistance and
Good heat resistance.
Nickel-Based Steel is that, using nickel as matrix, have higher intensity and good antioxygen in the range of 650~1000 DEG C
Change, resistance to combustion gas corrosion ability.
As the preferred embodiment of the present invention, the liner of the gasification furnace is thermal refractory material, the side towards the fire of liner
For wear-resistant pouring material or heavy refractory matter lining.
As the preferred embodiment of the present invention, the gasification furnace is pressurized fluidized bed gasifier.
As the preferred embodiment of the present invention, the operating pressure of the pressurized fluidized bed gasifier is 0.1~10MPa.
It is above-mentioned preferred embodiment in, the typical but non-limiting operating pressure of pressurized fluidized bed gasifier is for example
For：0.1MPa, 0.5MPa, 1MPa, 2MPa, 3MPa, 4MPa, 5MPa, 6MPa, 7MPa, 8MPa, 9MPa or 10MPa.
Another aspect of the present invention provides a kind of coal gas processing system, including above-mentioned gasification furnace.
The coal gas processing system that the present invention is provided includes above-mentioned gasification furnace, therefore, using the coal gas processing system pair
Coal carries out coal-producing gasification processing, can reach the rate of gasification for providing coal raw material and the purpose for reducing fine coal discharge.
Bright preferred embodiment as we, the upper strata nozzle connects gasifying agent supply dress with the underlying nozzle
Put, the charging aperture is connected with coal supply apparatus, the gas outlet is connected with secondary conversion device, the ash hole and the grey lock hopper of collection
Connection；
The secondary conversion device is sequentially connected gas boiler, washing saturator and settling separation device；The coal gas
Gas boiler and washing saturator are sequentially passed through after handling through secondary conversion device outwards to convey again.
It is above-mentioned preferred embodiment in, gasification agent feeding device include gasifying agent blender, gasifying agent blender will
Oxygen and steam carry out being mixed to get gasifying agent.
Coal supply apparatus includes coal bunker, the fine coal lock hopper being connected with coal bunker bottom, fine coal lock hopper bottom connection fine coal storage tank, powder
Coal storage tank bottom connects stoker, and stoker is delivered to fine coal in gasification furnace by the charging aperture of gasification furnace.
Secondary conversion device includes secondary conversion stove and the first collection ash can, coal gas outlet and the coal gas pot of secondary conversion stove
Stove is connected, and the bottom deslagging mouthful of secondary conversion stove is connected with the first collection ash can.
The coal gas outlet of gas boiler is connected with washing saturator, the bottom deslagging mouthful of gas boiler and the second collection ash can
Connection.
Settling separation device includes flash tank, subsider, ash water tank, mortar-trough and deoxygenation tank.
The bottom discharge mouthful of washing saturator is connected with flash tank, and flash tank discharge outlet is connected with subsider, subsider
Upper outlet is connected with ash water tank, and the lower part outlet of subsider is connected with mortar-trough.Ash water tank is connected with deoxygenation tank, deaerated water
Groove is connected with washing saturator.
First collection ash can and the second collection ash can are connected with subsider.
It is above-mentioned preferred embodiment in, to gasification furnace coal supply stoker set three, accordingly, charging aperture set
Three, charging aperture is in gasification furnace bottom and on underlying nozzle, and three charging apertures are uniformly annular in same plane during arrangement
Arrangement.Gasify the grey lock hopper of furnace bottom connection collection, and the import and export of the grey lock hopper of collection are provided with hydraulic pressure or gas-operated lock slag ball valve, the grey lock hopper of collection
Wall liner has the lime-ash in abrasion-proof corrosion-proof backplate, the grey lock hopper of collection to be discharged by slag extractor or waterpower ash discharge facility.Gasification furnace
Gas outlet be connected with the direct flange of secondary conversion stove.Connecting tube between gasification furnace and secondary conversion stove is short as far as possible, and
Heat-resisting castable lining is provided with pipe.
As the preferred embodiment of the present invention, gasifying agent nozzle is provided with the top of the secondary conversion stove, for leading to
Enter gasifying agent further to react with the fine coal in coal gas；The wall lining thermal refractory material of secondary conversion stove, liner to
Fiery face is wear-resistant pouring material or heavy refractory matter lining；The furnace bottom connection first of secondary conversion stove collects ash can, the first collection ash
After the lime-ash that the import and export of tank are provided with hydraulic pressure or gas-operated lock slag ball valve, the first collection ash can is discharged by waterpower ash discharge facility
Into subsider.
As the preferred embodiment of the present invention, the body of heater shell of the gas boiler is carbon steel material shell, coal gas pot
Furnace interior is provided with the harp arrangement heat transfer unit (HTU) of high temperature chrome-molybdenum steel tubulation.Gas boiler top is steam superheater heat exchanging pipe；Coal
It is gas boiler heat exchanging pipe in the middle part of gas boiler, it sets tedge and down-comer to be connected with external boiler drum byproduct steam；
Gas boiler bottom is that coal ash separated space is used to separate dedusting.The coal ash separated enters that gas boiler bottom is connected
Two collection ash cans, the coal ash that second collects in ash can is discharged enter subsider by waterpower form.
As the preferred embodiment of the present invention, the gas boiler is absorbed heat and incited somebody to action by middle part gas boiler heat exchanging pipe
Heat is sent to boiler-steam dome byproduct steam, and byproduct steam, which can use by oneself, outwards to be conveyed.
The inwall of gas boiler is lined with heat-resisting pour and erosion control baffle plate is provided with lining, the air inlet of gas boiler, heat exchange
Wear-resisting watt is equipped with the top of tubulation；The ash hole of the useless pot bottom of coal gas is connected with the second collection ash can, the turnover of the second collection ash can
Mouth is provided with pneumatic automatic lock slag ball valve, using the outside ash discharge of waterpower ash method.
Washing saturator is the vapour-liquid contacting column of solid valve arrangement or the vapour-liquid contacting column of vertical sieve tray structure, washing saturator
Make coal gas decreasing temperature and increasing humidity, realize the purpose that coal gas is given a dinner of welcome with aqueous vapor saturation.Washing saturator is multilayer column plate, passes through two
Process route supplies water to column plate：The deaerated water come from deoxygenation tank enters upper tray after being heated by grey water heater and supplied water,
Middle part clear liquid in washing saturator is by being pumped into lower tray.Coal gas is given a dinner of welcome and improves liquid to steam ratio by washing saturator
Afterwards, the product coal gas isolated by moisture trap is outwards exported, and the water of giving a dinner of welcome in washing saturator is sent to by pipeline
Flash tank.
Flash tank be it is a kind of by decompression boil the container that form is discharged the on-condensible gas incorporated in liquid again, realization
Liquid release fixed gas, cooling and the purpose containing solid concentration.Flash tank is set to one and arrives three-level, and pressure gradually successively decreases, flash tank
Interior liquid sends into subsider by pipeline.
Subsider is a kind of fixed equipment separated made by gravitational settling in liquid, the concentrate of its bottom to
Outer output, upper clear supernate is returned in ash water tank by overflow manner and recycled, so as to realize what system water circulation was reused
Purpose.
The equipment that deoxygenation tank is a kind of utilization low-pressure steam heating system water to reduce oxygen in water concentration, its bottom
Portion is connected with delivery pump, and the water pressurization after deoxygenation is sent in washing saturator and recycled.
As the preferred embodiment of the present invention, the secondary conversion device is replaced with cyclone dust collector.From gasification furnace
Coal gas out carries out solid and gas separation, the pipe that the coal ash obtained after separation passes through cyclone separator bottom in cyclone separator
Road is reentered to be reacted in gasification furnace, so as to reduce the discharge capacity of the coal ash in later stage.
In above-mentioned preferred embodiment, the upper strata nozzle connects gasification agent feeding device, institute with the underlying nozzle
State charging aperture to be connected with coal supply apparatus, the gas outlet is connected with cyclone dust collector, the ash hole is connected with the grey lock hopper of collection；
Gas boiler, washing saturator and settling separation device are sequentially connected after the cyclone dust collector；The coal gas is through whirlwind
Gas boiler and washing saturator are sequentially passed through after dust arrester processing outwards to convey again.
As the preferred embodiment of the present invention, the washing saturator is replaced with dry-method dust-removal device.
It is above-mentioned preferred embodiment in, the upper strata nozzle connected with the underlying nozzle gasification agent feeding device,
The charging aperture is connected with coal supply apparatus, and the gas outlet is connected with secondary conversion device, and the ash hole connects with the grey lock hopper of collection
Connect；Gas boiler, dry-method dust-removal device and settling separation device are sequentially connected after the secondary conversion device；The coal gas warp
Gas boiler and dry-method dust-removal device are sequentially passed through after the processing of secondary conversion device outwards to convey again.
After washing saturator is replaced with dry-method dust-removal device, washed because water is not used in dry-method dust-removal device, therefore
Waste water is not produced, so as to cancel part settling separation device, for example：Washing saturator, flash tank, knockout drum, deoxygenation
The equipment such as tank, furthermore it is also possible to significantly reduce the size of the equipment such as subsider, ash water tank, deoxygenation tank, mortar-trough.
Embodiment 1
As shown in figure 1, the present embodiment is a kind of gasification furnace 5, including body of heater and burner hearth, the top of body of heater, which is provided with, to be used to export
The gas outlet of coal gas, the bottom of body of heater sets charging aperture, and the bottom of body of heater is provided with ash hole；Burner hearth includes emulsion zone and dilute phase
Area, body of heater corresponding with dilute-phase zone is provided with the upper strata nozzle 51 for being used for that gasifying agent to be imported to dilute-phase zone, corresponding with emulsion zone
Body of heater is provided with the underlying nozzle 52 for being used for that gasifying agent to be imported to emulsion zone.
The burner hearth of gasification furnace is divided into emulsion zone and dilute-phase zone from the bottom to top, and upper strata nozzle 51 is located at corresponding to dilute-phase zone
On body of heater, underlying nozzle 52 is located on the body of heater corresponding to emulsion zone, and underlying nozzle 52 is located between charging aperture and ash hole.
Fine coal raw material enters furnace interior by charging aperture, now, and underlying nozzle 52 is passed through gasifying agent into burner hearth, due to
Gasifying agent is high-speed jet gas because, fine coal gasifying agent disturbance float downward and form whirlpool and gasifying agent at high temperature
Carry out gasification reaction.Fine coal has part fine coal after floating and does not carry out gasification reaction, and now upper strata nozzle 51 continues to be passed through gasification
Fine coal after agent, with floating continues occur gasification reaction, so that the gasification efficiency of fine coal is improved.The coal obtained after gasification
Gas processed is outwards exported by gas outlet, and the dust obtained after gasifying is then discharged by the ash hole of bottom of furnace body.
Embodiment 2
As shown in Fig. 2 the present embodiment is a kind of coal gas processing system, including the gasification furnace 5 that embodiment 1 is provided, gas
The upper strata nozzle 51 for changing stove 5 connect gasification agent feeding device with underlying nozzle 52, and charging aperture is connected with coal supply apparatus, gas outlet and
Secondary conversion device is connected, and ash hole is connected with the grey lock hopper 7 of collection；Gas boiler, washing is sequentially connected after secondary conversion device to satisfy
With tower 12 and settling separation device.
Coal supply apparatus includes coal bunker 1, the fine coal lock hopper 2 being connected with the bottom of coal bunker 1, the bottom of fine coal lock hopper 2 connection fine coal storage
Tank 3, the bottom of fine coal storage tank 3 connection stoker 4, stoker 4 is delivered to fine coal in gasification furnace 5 by the charging aperture of gasification furnace 5.
Secondary conversion device includes secondary conversion stove 9 and first and collects ash can 8, the coal gas outlet of secondary conversion stove 9 and coal
Gas boiler is connected, and the bottom deslagging mouthful of secondary conversion stove 9 is connected with the first collection ash can 8.
The coal gas outlet of gas boiler is connected with washing saturator 12, the bottom deslagging mouthful of gas boiler and the second collection ash
Tank 10 is connected.
Settling separation device includes flash tank 13, subsider 14, ash water tank 15, mortar-trough 17 and deoxygenation tank 16.
The bottom discharge mouthful of washing saturator 12 is connected with flash tank 13, and the discharge outlet of flash tank 13 is connected with subsider 14,
The upper outlet of subsider 14 is connected with ash water tank 15, and the lower part outlet of subsider 14 is connected with mortar-trough 17.Ash water tank 15 with
Deoxygenation tank 16 is connected, and deoxygenation tank 16 is connected with washing saturator 12.
The first collection collection ash can 10 of ash can 8 and second is connected with subsider 14.
Below with reference to Fig. 2, specific annexation and technological process to the coal gas processing system of the present embodiment are done
It is further described.
Fine coal stores in coal bunker 1, enters fine coal lock hopper 2 according to certain metering, the fine coal from coal bunker 1 out is locked by fine coal
Bucket 2 enters fine coal storage tank 3, and sequential control of controlling by time variable is output to the coal supply amount of stoker 4 by fine coal storage tank 3, finally by supplying
Fine coal is sent in gasification furnace 5 by coal machine 4.Sent by gasifying agent blender 6 gasifying agent (oxygen+steam of different proportion or
The mixed gas of person's oxygen rich gas+vapour composition) spray into burner hearth through the upper strata nozzle 51 in gasification furnace 5 and underlying nozzle 52.Under
The gasifying agent that layer nozzle 52 is blown into makes fine coal spread rapidly, and occurs in the boiling bed in gasification furnace 5 with most of fine coal
Gasification reaction, the fine coal for not occurring gasification reaction on a small quantity floats upwards, continues to occur with the gasifying agent that upper strata nozzle 51 is blown into
Gasification reaction, now the temperature in the burner hearth of gasification furnace 5 can reach 900~1100 DEG C.Obtained after occurring gasification reaction in gasification furnace 5
Lime-ash enter the grey lock hopper 7 of collection, residual cake valve discharge of the lime-ash from the grey lock hopper 7 of collection.
Coal gas in gasification furnace 5 is outwards exported and entered in secondary conversion stove 9 from gas outlet, in secondary conversion stove 9
It is passed through the not vaporized fine coal taken out of in a small amount of gasifying agent and coal gas and carries out gasification reaction again, reacted lime-ash leads to
The the first collection ash can 8 for crossing the connection of the bottom of secondary conversion stove 9 is discharged.
The coal gas come out from secondary conversion stove 9 passes through conveyance conduit and sends into gas boiler 11, is returned in gas boiler 11
Receive coal gas waste heat.The feedwater of gas boiler 11 enters by the generation steam that exchanges heat in the middle part heat exchanging pipe of gas boiler 11, generation
Steam exports the steam superheater heat exchanging pipe for entering the top of gas boiler 11 by boiler-steam dome 111, and saturated vapor is overheated
Externally output or personal is drawn afterwards.
Coal gas temperature drop after waste heat recovery is sent to washing saturation to less than 300 DEG C by conveyance conduit
In tower 12.Coal gas is entered by the bottom of washing saturator 12, the washings counter current contacting got off with tower top, the progress to coal gas
Washing cooling, so as to realize the further cleaning dust to coal gas, removes the impurity in coal gas, while coal gas is steamed by water
Sent out after gas saturation.The setting of washing saturator 12 can be cancelled in the present embodiment, coal gas comes out from gas boiler 11
Used afterwards directly as coal gas fuel.
Flash tank 13 is connected with the bottom of washing saturator 12 by flowing line, the waste water of the bottom of washing saturator 12 discharge
By entering in flash tank 13, by decompression, the technology of boiling is released on-condensible gas in liquid to flash tank 13 again.Flash tank 13
In gas componant from flash tank gas outlet outflow after enter knockout drum 18, through knockout drum 18 separate after outwards export.Washing is full
Hydraulic turbine equipment also can be set on connecting pipe between tower 12 and flash tank 13, energy is reclaimed using draining pressure difference kinetic energy
Measure for generating electricity or saving power consumption.
Subsider 14 is connected with the bottom of flash tank 13 by flowing line, will after wastewater temperature drops to below 100 DEG C
In waste water feeding subsider 14, while the waste water in the first collection collection ash can 10 of ash can 8 and second is also delivered in subsider 14.Sedimentation
Groove 14 is separated the solid in liquid by way of gravitational settling.
Upper clear supernate in subsider 14 enters to store in ash water tank 15 by overflow manner to be used, the bottom ash of subsider 14
Slurry is sent in mortar-trough 17, then is outwards sent out by slurry pump.Deoxygenation tank 16 reduces water by way of heating deoxygenation
Dissolved oxygen, is connected with grey water pump by flow pipe line.
Embodiment 3
As shown in figure 3, the present embodiment is a kind of coal gas processing system, the difference of the processing system and embodiment 2
It is, secondary conversion device is replaced with cyclone dust collector 19.
Embodiment 4
As shown in figure 4, the present embodiment is a kind of coal gas processing system, the difference of the processing system and embodiment 2
Be, washing saturator replaced with dry-method dust-removal device 20, reduce auxiliary equipment washing saturator, flash tank, deoxygenation tank,
The use of knockout drum equipment；Furthermore it is also possible to significantly reduce the specification chi of the equipment such as subsider 14, ash water tank 15, mortar-trough 17
It is very little.
The present invention provides coal gas processing system, is characterized in employing and gasifies with upper strata nozzle 51 and underlying nozzle 52
Stove 5, is passed through gasifying agent into gasification furnace 5 simultaneously by upper strata nozzle 51 and underlying nozzle 52, enables the gasification efficiency of fine coal
Improve.The coal gas processing system that the present invention is provided is particularly suitable for use in using lignite, bituminous coal, anthracite, coke powder, blue carbon as raw material
Operating pressure in pressurized fluidized bed gasifier 5, stove is between 0.1MPa~10.0MPa.By arranging upper strata nozzle 51 simultaneously
With underlying nozzle 52, being passed through after gasifying agent the fine coal formation in stove can be vortexed, gasification result is good, and the intensity of gasification is big, row
Ash is convenient.Meanwhile, secondary conversion stove 9, gas boiler 11 and sedimentation separation equipment are arranged in the processing system, makes coal gas waste heat
It is fully used, water system can be recycled.
Processing system that the present invention is provided is rational in infrastructure, efficiency high, pollute it is small, take up an area less, reduced investment, energy-conserving and environment-protective, have
Effect plays industry production capacity and economic benefit；Clean coal gasification, section are realized using the pressurized gasification technology of anthracite, coke as raw material
Energy emission reduction, environment-friendly purpose, there is fabulous industrialization prospect and extensive social benefit.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of gasification furnace, it is characterised in that including body of heater and burner hearth, the top of the body of heater, which is provided with, to be used to export coal gas
Gas outlet, the bottom of the body of heater sets charging aperture, and the bottom of the body of heater is provided with ash hole；
The burner hearth includes emulsion zone and dilute-phase zone, and the body of heater corresponding with the dilute-phase zone, which is provided with, to be used for the dilute phase
Area imports the upper strata nozzle of gasifying agent；The body of heater corresponding with the emulsion zone, which is provided with, to be used to import gas to the emulsion zone
The underlying nozzle of agent.
2. gasification furnace according to claim 1, it is characterised in that the upper strata nozzle is multiple and is evenly arranged in a ring
In same plane.
3. gasification furnace according to claim 1, it is characterised in that the underlying nozzle is multiple and is evenly arranged in a ring
In same plane.
4. the gasification furnace according to claim any one of 1-3, it is characterised in that the upper strata nozzle is austenitic stainless steel
Nozzle or Nickel-Based Steel nozzle；The underlying nozzle is austenitic stainless steel nozzle or Nickel-Based Steel nozzle.
5. the gasification furnace according to claim any one of 1-3, it is characterised in that the gasification furnace is pressurised fluidized bed gasification
Stove.
6. gasification furnace according to claim 5, it is characterised in that the operating pressure of the pressurized fluidized bed gasifier is
0.1~10MPa.
7. a kind of coal gas processing system, it is characterised in that including the gasification furnace described in claim any one of 1-6.
8. coal gas processing system according to claim 7, it is characterised in that the upper strata nozzle and the underlying nozzle
Connection gasification agent feeding device, the charging aperture is connected with coal supply apparatus, and the gas outlet is connected with secondary conversion device, described
Ash hole is connected with the grey lock hopper of collection；
Gas boiler, washing saturator and settling separation device are sequentially connected after the secondary conversion device；The coal gas warp
Gas boiler and washing saturator are sequentially passed through after the processing of secondary conversion device outwards to convey again.
9. coal gas processing system according to claim 8, it is characterised in that the secondary conversion device cyclone dust removal
Device is replaced.
10. coal gas processing system according to claim 8, it is characterised in that the washing saturator dry method dust
Device is replaced.
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| CN201710513791.1A CN107129832A (en) | 2017-06-28 | 2017-06-28 | Gasification furnace and coal gas processing system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2740609Y (en) * | 2004-09-10 | 2005-11-16 | 陕西秦能天脊科技有限公司 | Powdery coal gasifier of pressurized selecting ash-ejecting fluidized bed |
| US20100058662A1 (en) * | 2007-05-14 | 2010-03-11 | Keda Industrial Co., Ltd. | Circulating coal fluidized bed coal gas producer system |
| CN106544058A (en) * | 2017-01-24 | 2017-03-29 | 北京金泰瑞和工程科技有限公司 | Fixed bed pressured gasification system |
| CN207108931U (en) * | 2017-06-28 | 2018-03-16 | 北京金泰瑞和工程科技有限公司 | Gasification furnace and coal gas processing system |
-
2017
- 2017-06-28 CN CN201710513791.1A patent/CN107129832A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2740609Y (en) * | 2004-09-10 | 2005-11-16 | 陕西秦能天脊科技有限公司 | Powdery coal gasifier of pressurized selecting ash-ejecting fluidized bed |
| US20100058662A1 (en) * | 2007-05-14 | 2010-03-11 | Keda Industrial Co., Ltd. | Circulating coal fluidized bed coal gas producer system |
| CN106544058A (en) * | 2017-01-24 | 2017-03-29 | 北京金泰瑞和工程科技有限公司 | Fixed bed pressured gasification system |
| CN207108931U (en) * | 2017-06-28 | 2018-03-16 | 北京金泰瑞和工程科技有限公司 | Gasification furnace and coal gas processing system |
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