CN106731375A - raw gas washing system and method - Google Patents
raw gas washing system and method Download PDFInfo
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- CN106731375A CN106731375A CN201611096373.9A CN201611096373A CN106731375A CN 106731375 A CN106731375 A CN 106731375A CN 201611096373 A CN201611096373 A CN 201611096373A CN 106731375 A CN106731375 A CN 106731375A
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- raw gas
- dust
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
- C10K1/024—Dust removal by filtration
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
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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
-
- 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
- Y02P20/50—Improvements relating to the production of bulk chemicals
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Industrial Gases (AREA)
Abstract
The invention discloses a kind of raw gas washing system, including：Dry dust removal apparatus, are connected to the raw gas outlet of the gasification furnace, for carrying out dry dust removal to the raw gas from the gasification furnace；And water washing device, the raw gas outlet of the dry dust removal apparatus is connected to, for being washed to the raw gas by dry dust removal.In the present invention, after dry dust removal, raw gas still keeps high temperature, therefore, it can using the temperature rough gas by-product middle pressure steam high, so as to the utilization ratio of energy can be improved.Additionally, the dry dust produced after dry dust removal need not be processed, can direct Collection utilization, the pressure of reduction subsequent separation system.Additionally, when carrying out dry dust removal to raw gas, it is not necessary to use gas liquor, therefore, the consumption of washings is reduced, water resource and cost are saved, and also enhance the clean result of raw gas, it is ensured that the quality of raw gas.
Description
Technical field
The present invention relates to a kind of raw gas washing system for being suitable to and being washed to the raw gas discharged from gasification furnace, and
A kind of method for being suitable to wash the raw gas discharged from gasification furnace.
Background technology
In the prior art, conventional fixed-bed gasification furnace is typically all washed using wet scrubbing method to raw gas
Wash.The generation of existing raw gas and washing process flow are as follows：
The raw material lump coal of warehouse adds the coal lock of gasification furnace by gravity at ambient pressure, is added to through transitional storehouse after coal lock pressurization
The top of gasification furnace.Feed coal into gasification furnace is moved from top to bottom, sequentially passes through preheating, drying, destructive distillation, gasification and burning
Area, the steaming oxygen mixture sprayed into the blowing air down mouthful from gasification furnace is burnt and is reacted, react generation synthesis gas (or
Be raw gas) it is up with gasification furnace in feed coal fully exchange heat after left from gasification furnace upper outlet.
Temperature rough gas high use circulating gas water Quench and washing in scrubber cooler immediately after leaving gasification furnace, occur strong
Strong mass-and heat-transfer, raw gas is cooled to 190 DEG C or so.Raw gas is in scrubber cooler by water saturation, the powder of its entrainment
Dirt is also washed with soluble material and out enters in waste liquid.Afterwards, raw gas enters the collecting tank of waste heat boiler, waste heat boiler
Heat transferring medium (usually water) in stove is exchanged heat with raw gas, to reduce the temperature of raw gas, while low pressure can be produced
Steam.Afterwards, raw gas leaves from the top of waste heat boiler, and condenses the gas liquor for producing with dissolved matter, condensate and powder
Dirt is discharged from waste heat boiler bottom, is further processed into gas liquor centrifugal station.When raw gas leaves the top of waste heat boiler
About 170 DEG C of temperature.
Conventionally, as temperature rough gas high are directly by water Quench, its temperature is too low, it is impossible to by-product high-pressure steam,
By-product low-pressure steam is only capable of, high-grade thermal waste is caused.
Additionally, in the prior art, it is very big for temperature rough gas high to be carried out with the water of gas liquor of Quench and washing,
The waste of water resource is caused, and also results in water pipeline complexity, increase cost.
Additionally, in the prior art, the most dust in raw gas all enter in waste liquid, cause subsequent separation process
It is complicated.
The content of the invention
The purpose of the present invention aims to solve the problem that at least one aspect of the above-mentioned problems in the prior art and defect.
According to an aspect of the present invention, there is provided a kind of raw gas washing system, it is suitable to the rough coal to being discharged from gasification furnace
Gas is washed.The raw gas washing system includes：Dry dust removal apparatus, are connected to the raw gas outlet of the gasification furnace,
For carrying out dry dust removal to the raw gas from the gasification furnace；And water washing device, for by the thick of dry dust removal
Coal gas is washed.
The embodiment of an exemplary of the invention, the raw gas washing system also includes waste heat recovery plant,
The waste heat recovery plant is connected to raw gas outlet and the raw gas entrance of the water washing device of the dry dust removal apparatus
Between, it is suitable to carry out heat exchange with the raw gas by heat transferring medium.
The embodiment of another exemplary of the invention, the raw gas washing system is also filled including dust collection
Put, the dust collecting is connected to the dust outlet of the dry dust removal apparatus, for collecting from dry dust removal dress
The dust of the dust outlet discharge put.
The embodiment of another exemplary of the invention, the raw gas washing system is also filled including dust emission
Put, the dust emission device is connected to the dust outlet of the dust collecting, for receiving from dust collection dress
The dust of the dust outlet discharge put, is provided with the dust that is suitable to receive and is discharged in the bottom of the dust emission device
Outside dust outlet.
The embodiment of another exemplary of the invention, the dry dust removal apparatus are cyclone separator, described useless
Heat reclamation device is waste heat boiler, and the water washing device is scrubbing tower.
The embodiment of another exemplary of the invention, the heat transferring medium in the waste heat recovery plant is water.
The embodiment of another exemplary of the invention, the raw gas entrance of the dry dust removal apparatus is connected to institute
The raw gas outlet of gasification furnace is stated, the raw gas outlet of the dry dust removal apparatus is connected to the rough coal of the waste heat recovery plant
Gas entrance, the dust outlet of the dry dust removal apparatus is connected to the dust inlet of the dust collecting.
The embodiment of another exemplary of the invention, the raw gas outlet of the waste heat recovery plant is connected to institute
State the raw gas entrance of water washing device；The waste heat recovery plant has the heat transferring medium entrance for being input into the heat transferring medium
Exported with for exporting the heat transferring medium of the heat transferring medium.
The embodiment of another exemplary of the invention, the water washing device has the first washing water inlet, is located at
Second washing water inlet of the top of first washing water inlet, positioned at the top of the water washing device raw gas outlet and
Positioned at the washing water out of the bottom of the water washing device；Excessive gas liquor is sprayed into from first washing water inlet so that institute
Raw gas water saturation is stated, appropriate gas liquor is sprayed into from second washing water inlet, water-filling is entered to water saturated raw gas
Wash；Output is exported via the raw gas of the water washing device by the raw gas washed, the waste liquid produced after washing is via institute
State the washing water out discharge of water washing device.
The embodiment of another exemplary of the invention, the dust collecting is dust collection tank, the powder
Dirt tapping equipment is dust emission tank.
The embodiment of another exemplary of the invention, the dust collecting also has pressure relief opening and pressurising
Mouthful；The pressure relief opening is connected to the blowdown line of the coal lock of the gasification furnace, for carrying out pressure release to the dust collecting；
The pressurising mouth is connected to the pressurising pipeline of the coal lock of the gasification furnace, for carrying out pressurising to the dust collecting.
The embodiment of another exemplary of the invention, the dust outlet connection of the bottom of the dust collecting
To the dust inlet at the top of the dust emission device；The dust emission device has the inertia for being input into inert gas
Gas access, before dust enters the dust emission device, the inertia is pre-filled with the dust emission device
Gas.
According to another aspect of the present invention, there is provided a kind of raw gas washing methods, comprise the following steps：S100：To from
The raw gas of the gasification furnace discharge carries out dry dust removal；And S200：Raw gas by dry dust removal is washed.
In the embodiment of foregoing each exemplary of the invention, the raw gas to being discharged from gasification furnace is first done
Formula dedusting, is then washed again.After dry dust removal, raw gas still keeps high temperature, therefore, it can thick using the high temperature
Coal gas by-product middle pressure steam, so as to the utilization ratio of energy can be improved.
Additionally, in the embodiment of foregoing each exemplary of the invention, the dry dust produced after dry dust removal
Need not be processed, can direct Collection utilization, reduce the pressure of subsequent separation system.
Additionally, in the embodiment of foregoing each exemplary of the invention, when carrying out dry dust removal to raw gas, no
Gas liquor (or being washings) is needed to use, therefore, the consumption of washings is reduced, water resource and cost are saved, and
Also enhance the clean result of raw gas, it is ensured that the quality of raw gas.
By the description made for the present invention of below with reference to accompanying drawing, other objects and advantages of the present invention will be aobvious and easy
See, and can help that complete understanding of the invention will be obtained.
Brief description of the drawings
Fig. 1 show the embodiment of an exemplary of the invention be suitable to the raw gas discharged from gasification furnace is carried out
The schematic diagram of the raw gas washing system of washing.
Specific embodiment
Below by embodiment, and with reference to accompanying drawing, technical scheme is described in further detail.In explanation
In book, same or analogous drawing reference numeral indicates same or analogous part.It is following referring to the drawings to embodiment of the present invention
Illustrate to be intended to explain present general inventive concept of the invention, and be not construed as to a kind of limitation of the invention.
In addition, in the following detailed description, for ease of explaining, elaborating many concrete details to provide to present disclosure
The comprehensive understanding of embodiment.It should be apparent, however, that one or more embodiments can also in the case of without these details
It is carried out.In other cases, known construction and device diagrammatically embodies to simplify accompanying drawing.
An a kind of general technical of the invention design, there is provided raw gas washing system, is suitable to from gasification fire grate
The raw gas for going out is washed.The raw gas washing system includes：Dry dust removal apparatus, are connected to the rough coal of the gasification furnace
Gas is exported, for carrying out dry dust removal to the raw gas from the gasification furnace；And water washing device, for being removed by dry type
The raw gas of dirt is washed.
Fig. 1 shows that the embodiment of an exemplary of the invention is suitable to enter the raw gas discharged from gasification furnace 3
The schematic diagram of the raw gas washing system of row washing.
As shown in figure 1, in the illustrated embodiment, the raw gas washing system mainly includes dry dust removal apparatus 5 and water
Cleaning device 9.Dry dust removal apparatus 5 are connected to the raw gas outlet 3b of gasification furnace 3, for entering to the raw gas from gasification furnace 3
Row dry dust removal.Water washing device 9 is used to wash the raw gas by dry dust removal.
As shown in figure 1, in the illustrated embodiment, raw gas washing system also includes waste heat recovery plant 8, the used heat is returned
Receiving apparatus 8 are connected between the raw gas of the dry dust removal apparatus 5 outlet 5b and raw gas entrance 9a of water washing device 9, are suitable to lead to
Cross heat transferring medium carries out heat exchange with raw gas.
As shown in figure 1, in the illustrated embodiment, raw gas washing system also includes dust collecting 6, the dust is received
Acquisition means 6 are connected to the dust outlet 5c of dry dust removal apparatus 5, and the dust outlet 5c for collecting from dry dust removal apparatus 5 is arranged
The dust for going out.
As shown in figure 1, in the illustrated embodiment, raw gas washing system also includes dust emission device 7, dust emission
Device 7 is connected to the dust outlet 6b of dust collecting 6, and the dust outlet 6b for receiving from dust collecting 6 is discharged
Dust.The bottom of dust emission device 7 is provided with the dust outlet 7b that the dust that is suitable to receive is discharged to the outside.
In the embodiment of an example of the present invention, as shown in figure 1, preceding dry dust arrester 5 can be whirlwind
Separator, foregoing waste heat recovery plant 8 can be waste heat boiler, and foregoing water washing device 9 can be scrubbing tower.
In the embodiment of an example of the present invention, as shown in figure 1, the heat exchange in foregoing waste heat recovery plant 8 is situated between
Matter can be water.
As shown in figure 1, in the illustrated embodiment, the raw gas entrance 5a of dry dust removal apparatus 5 is connected to gasification furnace 3
Raw gas exports 3b, and the raw gas outlet 5b of dry dust removal apparatus 5 is connected to the raw gas entrance 8a of waste heat recovery plant 8, does
The dust outlet 5c of formula dust arrester 5 is connected to the dust inlet 6a of dust collecting 6.
As shown in figure 1, in the illustrated embodiment, the raw gas outlet 8b of waste heat recovery plant 8 is connected to water washing device 9
Raw gas entrance 9a；Waste heat recovery plant 8 is changed with the heat transferring medium entrance 8c for being used to be input into heat transferring medium and for exporting
The heat transferring medium outlet 8d of thermal medium.
As shown in figure 1, in the illustrated embodiment, water washing device 9 has the first washing water inlet 9c, is washed positioned at first
Second washing water inlet 9d of the top of water inlet 9c, the raw gas positioned at the top of water washing device 9 export 9b and positioned at washing
The washing water out 9e of the bottom of device 9；Excessive gas liquor is sprayed into from the first washing water inlet 9c so that raw gas water saturation,
Appropriate gas liquor is sprayed into from the second washing water inlet 9d, water saturated raw gas is washed；By the rough coal washed
Gas via water washing device 9 raw gas outlet 9b export, after washing produce waste liquid via water washing device 9 washing water out
9e is discharged.
In the embodiment of an example of the present invention, as shown in figure 1, foregoing dust collecting 6 can be dust
Collecting tank, foregoing dust emission device 7 can be dust emission tank.
As shown in figure 1, in the illustrated embodiment, dust collecting 6 also has pressure relief opening 6c and pressurising mouthful 6d；Pressure release
Mouth 6c is connected to the blowdown line of the coal lock 1,2 of gasification furnace 3, for carrying out pressure release to dust collecting 6；Pressurising mouthful 6d connections
Coal to gasification furnace 3 locks 1,2 pressurising pipeline, for carrying out pressurising to dust collecting 6.
As shown in figure 1, in the illustrated embodiment, the dust outlet 6b of the bottom of dust collecting 6 is connected to dust
The dust inlet 7a at the top of tapping equipment 7；Dust emission device 7 has the inert gas entrance for being input into inert gas
7c, before dust enters dust emission device 7, inert gas is pre-filled with dust emission device 7.
In another embodiment of the present invention, a kind of raw gas washing methods is also disclosed, comprises the following steps：
S100：Raw gas to being discharged from gasification furnace 3 carries out dry dust removal；With
S200：Raw gas by dry dust removal is washed.
The generation of 1 detailed description raw gas and the technological process washed to raw gas below with reference to accompanying drawings.
As shown in figure 1, in the illustrated embodiment, the raw material lump coal of warehouse adds gasification furnace 3 by gravity at ambient pressure
Coal lock 1,2.Then, by pressurising pipeline to coal lock 1,2 pressurize so that coal lock 1,2 in feed coal enter transitional storehouse (not shown),
And be added in the top of gasification furnace 3 from transitional storehouse.The feed coal entered from the entrance 3a of gasification furnace 3 is moved from top to bottom, according to
Secondary to pass through preheating, drying, destructive distillation, gasification and combustion zone, the steaming oxygen mixture sprayed into the blowing air down mouthful from gasification furnace 3 is carried out
Burning and react, react generation synthesis gas (or being raw gas) it is up with gasification furnace in feed coal fully exchange heat after from gas
The raw gas outlet 3b for changing stove 3 leaves.The cinder produced after burning is discharged to slag lock from the cinder outlet 3c of the bottom of gasification furnace 3
In 4, and can be discharged to the outside from slag lock 4.
As shown in figure 1, in the illustrated embodiment, from the temperature rough gas high of the raw gas outlet 3b discharges of gasification furnace 3 from
The raw gas entrance 5a of dry dust removal apparatus 5 is isolated into dry dust removal is carried out in dry dust removal apparatus 5 from raw gas
A large amount of dust is discharged from the dust outlet 5c of the bottom of dry dust removal apparatus 5, and via the dust inlet 6a of dust collecting 6
Into in dust collecting 6.Arranged from the raw gas outlet 5b at the top of dry dust removal apparatus 5 by the raw gas of dry dust removal
Go out, and via waste heat recovery plant 8 raw gas entrance 8a enter waste heat recovery plant 8 in, with waste heat recovery plant 8 in change
Thermal medium is exchanged heat, because in dry dust removal, raw gas is without cooling, and temperature is higher, therefore, it can fill Waste Heat Recovery
The heat transferring medium put in 8 is converted into middle pressure steam, i.e. can by-product middle pressure steam, take full advantage of the sensible heat of raw gas.Through useless
After heat reclamation device 8 is lowered the temperature, raw gas is discharged from the raw gas outlet 8b of waste heat recovery plant 8, and via the thick of water washing device 9
Gas entry 9a enters in water washing device 9.Then, excessive gas liquor is sprayed into from the first washing water inlet 9c of water washing device 9, is made
Obtain raw gas water saturation.Afterwards, appropriate gas liquor is sprayed into from the second washing water inlet 9d of water washing device 9, to water saturation
Raw gas washed.By the raw gas washed user is arrived via the raw gas outlet 9b outputs at the top of water washing device 9
End.Wash the waste liquid for producing and carry dissolved matter, condensate and a small amount of dust, the waste liquid can washing from the bottom of water washing device 9
Water out 9e discharges are washed, coal gas water separation device (not shown) is entered into, so as to further treatment.
As shown in figure 1, in the illustrated embodiment, when the dust collected in dust collecting 6 reach it is a certain amount of after,
The valve V1 on connecting line closed between dry dust removal apparatus 5 and dust collecting 6, and carried out using to coal lock 1,2
The blowdown line of pressure release carries out pressure release to dust collecting 6, when normal pressure is let out, opens dust collecting 6 and dust row
The valve V2 on the connecting line between device 7 is put, dust enters into dust emission device 7 by gravity from dust collecting 6
In, then, the valve V2 closed between dust collecting 6 and dust emission device 7, and open the bottom of dust emission device 7
The dust outlet 7b in portion, so that the dry dust that will be isolated from raw gas is externally discharged, the dry dust of discharge can be acted on
Boiler oil.
Note that valve V2 on the connecting line opened between dust collecting 6 and dust emission device 7 it
It is preceding, it is necessary to via the inert gas entrance 7c on dust emission device 7 to being pre-filled with inert gas 7 in dust emission device 7,
For example, nitrogen or carbon dioxide, in case a small amount of temperature rough gas high in accidentally entering dust emission device 7 explode.
Continuing with referring to Fig. 1, in the illustrated embodiment, the valve between dust collecting 6 and dust emission device 7
After door V2 is closed, pressurising is carried out to dust collecting 6 using 1, the 2 pressurising pipelines for carrying out pressurising are locked to coal, work as pressurising
To dry dust removal apparatus 5 operating pressure when, open the valve V1 between dry dust removal apparatus 5 and dust collecting 6, again
Carry out dust collection.
It will be understood to those skilled in the art that embodiment described above is all exemplary, and this area
Technical staff can make improvements, the rushing in terms of not recurring structure or principle of the structure described in various embodiments
Independent assortment can be carried out in the case of prominent.
Although with reference to accompanying drawing, the present invention is described, and the embodiment disclosed in accompanying drawing is intended to preferred to the present invention
Implementation method is illustrative, and it is not intended that to a kind of limitation of the invention.
Although some embodiments of this present general inventive concept have been shown and have illustrated, those of ordinary skill in the art will manage
Solution, in the case of the principle without departing substantially from this present general inventive concept and spirit, can make a change to these embodiments, of the invention
Scope is limited with claim and their equivalent.
It should be noted that word " including " other elements or step are not excluded for, word "a" or "an" is not excluded for multiple.Separately
Outward, the scope that any element label of claim should not be construed as limiting the invention.
Claims (13)
1. a kind of raw gas washing system, is suitable to wash the raw gas discharged from gasification furnace (3),
It is characterized in that：
The raw gas washing system includes：
Dry dust removal apparatus (5), are connected to raw gas outlet (3b) of the gasification furnace (3), for from the gasification furnace
(3) raw gas carries out dry dust removal；With
Water washing device (9), for being washed to the raw gas by dry dust removal.
2. raw gas washing system according to claim 1, it is characterised in that：
The raw gas washing system also includes waste heat recovery plant (8), and the waste heat recovery plant (8) is connected to the dry type
Between raw gas outlet (5b) and the raw gas entrance (9a) of the water washing device (9) of dust arrester (5), it is suitable to by heat exchange
Medium carries out heat exchange with the raw gas.
3. raw gas washing system according to claim 1 and 2, it is characterised in that：
The raw gas washing system also includes dust collecting (6), and the dust collecting (6) is connected to the dry type
The dust outlet (5c) of dust arrester (5), the powder that the dust outlet (5c) for collecting from the dry dust removal apparatus (5) is discharged
Dirt.
4. raw gas washing system according to claim 3, it is characterised in that：
The raw gas washing system also includes dust emission device (7), and the dust emission device (7) is connected to the dust
The dust outlet (6b) of collection device (6), the powder that the dust outlet (6b) for receiving from the dust collecting (6) is discharged
Dirt,
The bottom of the dust emission device (7) is provided with the dust outlet that the dust that is suitable to receive is discharged to the outside
(7b)。
5. raw gas washing system according to claim 4, it is characterised in that：
The dry dust removal apparatus (5) are cyclone separator, and the waste heat recovery plant (8) is waste heat boiler, the washing dress
It is scrubbing tower to put (9).
6. raw gas washing system according to claim 2, it is characterised in that：Changing in the waste heat recovery plant (8)
Thermal medium is water.
7. raw gas washing system according to claim 5, it is characterised in that：
The raw gas entrance (5a) of the dry dust removal apparatus (5) is connected to raw gas outlet (3b) of the gasification furnace (3),
Raw gas outlet (5b) of the dry dust removal apparatus (5) is connected to the raw gas entrance of the waste heat recovery plant (8)
(8a),
The dust outlet (5c) of the dry dust removal apparatus (5) is connected to the dust inlet (6a) of the dust collecting (6).
8. raw gas washing system according to claim 7, it is characterised in that：
Raw gas outlet (8b) of the waste heat recovery plant (8) is connected to the raw gas entrance (9a) of the water washing device (9)；
The waste heat recovery plant (8) is with for being input into the heat transferring medium entrance (8c) of the heat transferring medium and for exporting
State heat transferring medium outlet (8d) of heat transferring medium.
9. raw gas washing system according to claim 8, it is characterised in that：
The water washing device (9) is with the first washing water inlet (9c), positioned at the top of first washing water inlet (9c)
Second washing water inlet (9d), the raw gas positioned at the top of the water washing device (9) export (9b) and positioned at the washing dress
Put the washing water out (9e) of the bottom of (9)；
Excessive gas liquor is sprayed into from first washing water inlet (9c) so that the raw gas water saturation, washed from described second
Wash water inlet (9d) and spray into appropriate gas liquor, water saturated raw gas is washed；
Exported via raw gas outlet (9b) of the water washing device (9) by the raw gas washed, what is produced after washing is useless
Liquid is discharged via the washing water out (9e) of the water washing device (9).
10. raw gas washing system according to claim 4, it is characterised in that：
The dust collecting (6) is dust collection tank, and the dust emission device (7) is dust emission tank.
11. raw gas washing systems according to claim 4, it is characterised in that：
The dust collecting (6) also has pressure relief opening (6c) and pressurising mouthful (6d)；
The pressure relief opening (6c) is connected to the blowdown line of coal lock (1,2) of the gasification furnace (3), for the dust collection
Device (6) carries out pressure release；
The pressurising mouthful (6d) is connected to the pressurising pipeline of coal lock (1,2) of the gasification furnace (3), for the dust collection
Device (6) carries out pressurising.
12. raw gas washing systems according to claim 4, it is characterised in that：
The dust outlet (6b) of the bottom of the dust collecting (6) is connected to the top of the dust emission device (7)
Dust inlet (7a)；
The dust emission device (7) enters described with the inert gas entrance (7c) for being input into inert gas in dust
Before dust emission device (7), the inert gas is pre-filled with the dust emission device (7).
A kind of 13. raw gas washing methods, comprise the following steps：
S100：Raw gas to being discharged from the gasification furnace (3) carries out dry dust removal；With
S200：Raw gas by dry dust removal is washed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611096373.9A CN106731375B (en) | 2016-12-02 | 2016-12-02 | Raw gas scrubbing system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611096373.9A CN106731375B (en) | 2016-12-02 | 2016-12-02 | Raw gas scrubbing system and method |
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| Publication Number | Publication Date |
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| CN106731375A true CN106731375A (en) | 2017-05-31 |
| CN106731375B CN106731375B (en) | 2022-08-16 |
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| CN201611096373.9A Active CN106731375B (en) | 2016-12-02 | 2016-12-02 | Raw gas scrubbing system and method |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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