CN106398779A - Synthetic gas washing, dedusting and dewatering system - Google Patents
Synthetic gas washing, dedusting and dewatering system Download PDFInfo
- Publication number
- CN106398779A CN106398779A CN201610950744.9A CN201610950744A CN106398779A CN 106398779 A CN106398779 A CN 106398779A CN 201610950744 A CN201610950744 A CN 201610950744A CN 106398779 A CN106398779 A CN 106398779A
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- CN
- China
- Prior art keywords
- synthesis gas
- comer
- scrubbing tower
- dewatering system
- scrubber
- Prior art date
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- 238000005406 washing Methods 0.000 title claims abstract description 40
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 63
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 238000001816 cooling Methods 0.000 claims abstract description 35
- 238000005201 scrubbing Methods 0.000 claims description 48
- 238000000703 high-speed centrifugation Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 10
- 239000007787 solid Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000002309 gasification Methods 0.000 description 16
- 238000005119 centrifugation Methods 0.000 description 11
- 239000003245 coal Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010008428 Chemical poisoning Diseases 0.000 description 1
- 238000005773 Enders reaction Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- 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
- C10K1/026—Dust removal by centrifugal forces
-
- 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
- C10K1/101—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids with water only
Landscapes
- Chemical & Material Sciences (AREA)
- 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 synthesis gas washing, dedusting and dehydrating system which comprises a water cooling chamber, a Venturi mixer, a washing tower and a tube bundle centrifugal separator which are sequentially connected. The syngas washing, dust removing and dewatering system provided by the invention can efficiently remove solid and liquid in syngas, and solves the problems that the existing washing system has bad effect on removing micron-sized dust, needs more equipment, has large gas pressure drop and water consumption, has large water content of syngas discharged from a washing tower and the like.
Description
Technical field
The invention belongs to coal chemical technology, it is related to a kind of synthesis gas washing dedusting dewatering system.
Background technology
In coal chemical technology, contain substantial amounts of fine ash from gasification furnace crude synthesis gas out, when for subsequent cell
Need synthesis gas is washed, remove the fine ash in synthesis gas and water, if raw gas purifying is not thorough, wherein contain is thin
Ash is easily caused that upstream device fouling resistance is excessive or catalyst poisoning, and impact produces.Therefore crude synthesis gas dedusting dewatering process
Most important to the even running producing, the target after the washing of current industry requirement crude synthesis gas is less than 1mg/ for dustiness
Nm3.
At present, coal gasification field, the typical dust collection method of crude synthesis gas is wet ash removal, in order to reach synthesis gas dustiness
Less than 1mg/Nm3, the shortcoming that typical crude synthesis gas dust collecting process exists：Bad for micron-sized dust removal effect, special
It is not for the fine coal gasification process that pressurizes；Equipment needed thereby is many, and investment is big；Pressure drop is big, and water consumption is many, and the synthesis gas going out scrubbing tower contains
The water yield is big, and subsequent cell needs to increase separation equipment etc..
Content of the invention
(1) technical problem to be solved
The technical problem to be solved is how to solve existing washing system to micron order dust removal effect
Bad, equipment needed thereby is many, and gas pressure drop is big, and water consumption is many and/or the problems such as synthesis gas water content that go out scrubbing tower is big.
(2) technical scheme
To achieve these goals, the invention provides a kind of synthesis gas washing dedusting dewatering system, including being sequentially connected
Water cooling chamber, venturi mixer, scrubbing tower, restrain whizzer.
Preferably, the tedge that described water cooling chamber includes down-comer and is arranged on described down-comer periphery, described under
Gap is left between fall pipe and described tedge.
Preferably, described down-comer lower end is immersed under the liquid level of liquid in described water cooling chamber；The one of described tedge
It is partially immersed under the liquid level of liquid in described water cooling chamber.
Preferably, described down-comer bottom has jagged edge, and the height of sawtooth is 30-60mm.
Preferably, the gap between described down-comer and described tedge is 1.5-2 times of described down-comer cross-sectional area,
Preferably 1.8 times.
Preferably, described scrubbing tower includes gas washer, one or more tower tray, demister；Described scrubbing tower top
There is connected entrance connect with described tube bank whizzer；Described demister is located at described scrubbing tower top, described gas scrubbing
Device is located at described scrubbing tower bottom；And/or described tower tray is located between described gas washer and described demister.
Preferably, described gas washer includes scrubber's down-comer and is arranged on described scrubber down-comer bottom periphery
Scrubber's tedge, leave gap between described scrubber tedge and described scrubber down-comer；Described scrubber declines
Bottom of the tube and described scrubber tedge are immersed under the liquid level of liquid in described scrubbing tower, and described gas washer simultaneously is led to
Cross the outlet of connected entrance and described venturi mixer.
Preferably, described venturi mixer is connected with high pressure water system.
Preferably, also include high-pressure pump, the liquid of described scrubbing tower bottom can be incorporated into described water-cooled by described high-pressure pump
But in room.
Preferably, described tube bank whizzer top has synthesizer outlet；Described tube bank whizzer bottom with
Described scrubbing tower connection, in described tube bank whizzer, liquid can be incorporated in described scrubbing tower.
(2) beneficial effect
The present invention has compared significant advantage and beneficial effect：
1. pass through, using adopting water cooling chamber, venturi mixer, scrubbing tower, to restrain the knockdown classification of whizzer
Cleaning dust dehydration design, removable micron order dust, synthesis gas dustiness can be controlled in 1mg/m3Within, after washing simultaneously
Synthesis gas is low containing amount of liquid, thus subsequent cell pressure drop can be avoided to increase, and affects whole system because of chemical poisoning
The problems such as long-term operation, reduce operating cost, meanwhile, load regulation range is big, energy-conserving and environment-protective.
2. adopt single-stage venturi mixer, gas pressure drop is little, and water consumption is low.
3. this system equipment needed thereby is few, invests bottom, and operation maintenance is simple, and equipment cycle of operation is long.
Brief description
Fig. 1 is a kind of flow chart of synthesis gas washing dedusting dewatering system provided in an embodiment of the present invention.
In figure：
1st, water cooling chamber, 2, venturi mixer, 3, scrubbing tower, 4, tube bank whizzer, 5, high-pressure pump, 6, pipeline,
7th, pipeline, 8, pipeline, 9, pipeline, 10, ash-water pipeline, 11, high-pressure water pipeline, 12, ash-water pipeline, 13, pipeline, 14, pipeline,
15th, tower tray washings.
Specific embodiment
Below in conjunction with the embodiment of the present invention and accompanying drawing, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
As shown in figure 1, a kind of synthesis gas washing dedusting dewatering system that the present invention provides, including the water cooling being sequentially connected
Room 1, venturi mixer 2, scrubbing tower 3, tube bank whizzer 4 and high-pressure pump 5.Synthesis gas passes sequentially through water cooling chamber 1,
Venturi mixer 2, scrubbing tower 3 and tube bank whizzer 4, carry out dedusting dehydration.
Specifically, the tedge that water cooling chamber 1 includes down-comer and is arranged on described down-comer periphery, down-comer with upper
Gap is left between riser；Down-comer lower end is immersed under the liquid level of liquid in water cooling chamber 1；A part for tedge is immersed in
Under the liquid level of liquid in water cooling chamber 1.The high-temperature synthesis gas that gasification furnace reative cell produces enter gasification furnace bottom along down-comer
Carry out cooling washing with liquid under liquid levels in water cooling chamber 1.In action of gravity after molten slag cooling and solidifying in synthesis gas
Under separate with synthesis gas and be deposited in cooling chamber 1 bottom, be provided with tedge outside down-comer, crude synthesis gas are along down-comer and rising
Gap between pipe rises washs again, goes out to enter venturi mixing along pipeline 6 from cooling chamber 1 top syngas outlet afterwards
Device 2.
Wherein, down-comer bottom has jagged edge, and the height of sawtooth is 30-60mm；Between down-comer and tedge
Gap be 1.5-2 times of down-comer cross-sectional area.Decline tube edges have sawtooth and can effectively puncture synthesis gas washing process
The foam of middle formation.Between down-comer and tedge, setting gap is the position for controlling washings between down-comer and tedge
Put, make synthesis gas down-comer with rise ligament water in residence time longer, clean result is more preferable.Preferably, decline
Gap between pipe and tedge is 1.8 times of down-comer cross-sectional area, and at this moment clean result is especially good.
Specifically, the liquid of scrubbing tower 3 bottom can be incorporated in water cooling chamber 1 for high-pressure pump, and liquid is recycled；Civilian mound
In blender 2 be connected by high-pressure water pipeline 11 with high pressure water system；Water under high pressure enters the nozzle of venturi mixer 2, liquid
The trunnion of venturi mixer 2 is vigorously mixed with synthesis gas, with the dust in moistening synthesis gas, what formation was relatively large in diameter contains
Grey drop, the synthesis gas after moistening enters the middle part of scrubbing tower 3 by pipeline, carries out further washing ash disposal.
Specifically, scrubbing tower 3 includes gas washer, multiple tower tray, demister；Scrubbing tower 3 top have connected entrance with
Tube bank whizzer 4 connects；Demister is located at scrubbing tower 3 top, and gas washer is located at scrubbing tower 3 bottom；Tower tray is located at
Between gas washer and demister, tower tray is anti-stifled tower tray, tower tray washings 15 liquid above scrubbing tower 3 middle and upper part, tower tray
Body entrance enters scrubbing tower 3, and the demister through the synthesis gas scrubbed tower top of tower tray washing removes mist, and synthesis gas goes out to wash
Wash tower 3 and pass through pipeline 8 entrance tube bank whizzer 4.
Wherein, gas washer includes scrubber's down-comer and is arranged in the scrubber of scrubber's down-comer bottom periphery
Riser, leaves gap between scrubber's tedge and scrubber's down-comer；Scrubber declines bottom of the tube and scrubber's tedge
It is immersed under the liquid level of liquid in scrubbing tower 3, gas washer simultaneously is passed through connected entrance and connected with the outlet of venturi mixer 2
Logical.Synthesis gas from venturi mixer 2 is entered into by scrubber's down-comer under the liquid level of the liquid in scrubbing tower 3, with
Liquid contact washing, is provided with scrubber's tedge, synthesis gas is along scrubber's down-comer and scrubber outside scrubber's down-comer
Gap between tedge rises washs again, enters tower tray washing afterwards.Liquid in scrubbing tower 3 divides two-way to discharge, liquid
The cleaner buck in top enters high-pressure pump 5 along ash-water pipeline 12 and enters cooling chamber 1 after ash-water pipeline 10 again, or civilian mound
In blender 2, Heisui River of liquid bottom enters Slag-water system along pipeline 14.
Specifically, tube bank whizzer 4 top has synthesizer outlet；Tube bank whizzer 4 bottom and scrubbing tower 3
Connected by pipeline 8, in tube bank whizzer 4, liquid can be incorporated in scrubbing tower 3 by pipeline 13.
Wherein, tube bank centrifugation point is arranged on by the synthesis gas edge that the pipeline at scrubbing tower 3 top enters tube bank whizzer 4
The tangential inlet of centrifugation in device 4 enters centrifugation and separates again, and under the influence of centrifugal force, in gas, entrained with consolidates
Body granule and drop are thrown toward the sub inwall of centrifugation, flow into tube bank centrifugation through the synthesis gas of isolation of purified from the sub- top of centrifugation and divide
From the upper gas collection chamber of device 4, then down-stream system is sent into by pipeline 9, by detached solid particle and drop along centrifugation
The inwall of son is settled, and the bottom entering tube bank whizzer 4 is collected, and then enters scrubbing tower 3 by pipeline 13.
With reference to the synthesis gas washing dedusting dewatering system in the embodiment of the present invention, the dedusting describing this system in detail takes off
Water process.
Gasification furnace reative cell produce high-temperature synthesis gas along down-comer enter gasification furnace bottom water cooling chamber 1 liquid level with
Under, synthesis gas carries out sufficiently cool washing in water cooling chamber 1 water-bath, after the molten slag cooling and solidifying in synthesis gas under gravity
Separate with synthesis gas and be deposited in water cooling chamber 1 bottom, be provided with tedge outside cooling chamber down-comer, crude synthesis gas are in water cooling
Room 1 carries out cooling down washing tailing edge down-comer and the gap of tedge is up walked, and increases synthesis gas in the time of staying of cooling chamber, closes
Gas is become to enter venturi mixer 2 from cooling chamber top syngas outlet along pipeline 6 after cooling washing, from high pressure water system
Water under high pressure also into venturi mixer 2, in venturi mixer 2, water under high pressure is through being located in venturi mixer 2
Nozzle be vigorously mixed with synthesis gas in mixing tube, the dust in moistening synthesis gas, formed be relatively large in diameter containing grey drop, warp
Synthesis gas after moistening enters scrubbing tower 3 through pipeline 7, and the center connecting tube along scrubbing tower 3 enters gas washer, from scrubber
Down-comer sprays, and passes through scrubber's down-comer afterwards and the gap of scrubber's tedge is up walked, synthesis gas liquid in scrubbing tower 3
Up washed again by tower tray after body washing.Scrubbing tower 3 tower tray is high efficient anti-blocking tower tray, and tower tray upper liquid entrance enters
The liquid entering is as the washings of tower tray.Remove synthesis through the synthesis gas of tower tray by being located at the demister on scrubbing tower 3 top
Most of mist in gas, by the pipeline 8 at scrubbing tower 3 top enter tube bank whizzer 4, synthesis gas along be arranged on tube bank from
The tangential inlet of centrifugation in centrifugal separator 4 enters centrifugation and separates again, under the influence of centrifugal force, entrained with gas
Solid particle and drop be thrown toward the inwall of centrifugation, through isolation of purified synthesis gas from be centrifuged sub- top flow into tube bank from
The upper gas collection chamber of centrifugal separator 4, then sends into down-stream system by pipeline 9, by detached solid particle and drop along
The inwall of centrifugation is settled, and the bottom entering tube bank whizzer 4 is collected, and then enters scrubbing tower by pipeline 13
3.Liquid in scrubbing tower 3 divides two-way to discharge, and the cleaner buck of liquid upper enters along pipeline 12 and enters cooling after high-pressure pump
Room 1, or venturi mixer 2, the Heisui River of liquid bottom enters Slag-water system along pipeline 14.
The gasification furnace that in the present invention, synthesis gas washing dedusting dewatering system is suitable for extensively, can be Siemens's coal gasification,
Space flight stove coal gasification, texaco coal-water slurry gasification, section's woods coal gasification, two-stage furnace coal gasification, east stove coal gasification, clear
The crude synthesis gas that the gasification furnaces such as magnificent stove coal water slurry gasification, Shanxi coal stove, Kaiyang stove, western Shandong stove, Ender furnace produce.
The above, only certain specific embodiments of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, all
Should be included within the scope of the present invention.Therefore, protection scope of the present invention should be with described scope of the claims
It is defined.
Claims (10)
1. a kind of synthesis gas washing dedusting dewatering system it is characterised in that：
Including the water cooling chamber (1) being sequentially connected, venturi mixer (2), scrubbing tower (3), tube bank whizzer (4).
2. synthesis gas washing dedusting dewatering system according to claim 1 it is characterised in that：
Tedge, described down-comer and institute that described water cooling chamber (1) includes down-comer and is arranged on described down-comer periphery
State and between tedge, leave gap.
3. synthesis gas washing dedusting dewatering system according to claim 2 it is characterised in that：
Described down-comer lower end is immersed under the liquid level of liquid in described water cooling chamber (1)；
A part for described tedge is immersed under the liquid level of liquid in described water cooling chamber (1).
4. synthesis gas washing dedusting dewatering system according to claim 2 it is characterised in that：
Described down-comer bottom has jagged edge, and the height of sawtooth is 30-60mm.
5. synthesis gas washing dedusting dewatering system according to claim 2 it is characterised in that：
Gap between described down-comer and described tedge is 1.5-2 times of described down-comer cross-sectional area.
6. synthesis gas washing dedusting dewatering system according to claim 1 it is characterised in that：
Described scrubbing tower (3) includes gas washer, one or more tower tray, demister；
Described scrubbing tower (3) top is had connected entrance and is connected with described tube bank whizzer (4)；
Described demister is located at described scrubbing tower (3) top, and described gas washer is located at described scrubbing tower (3) bottom；And/or
Described tower tray is located between described gas washer and described demister.
7. synthesis gas washing dedusting dewatering system according to claim 6 it is characterised in that：
Described gas washer includes scrubber's down-comer and is arranged in the scrubber of described scrubber down-comer bottom periphery
Riser, leaves gap between described scrubber tedge and described scrubber down-comer；
Described scrubber declines bottom of the tube and described scrubber tedge is immersed in the liquid level of liquid in described scrubbing tower (3)
Under, the outlet of connected entrance and described venturi mixer (2) is passed through in described gas washer simultaneously.
8. synthesis gas washing dedusting dewatering system according to claim 1 it is characterised in that：
Described venturi mixer (2) is connected with high pressure water system.
9. synthesis gas washing dedusting dewatering system according to claim 1 it is characterised in that：
Also include high-pressure pump, the liquid of described scrubbing tower (3) bottom can be incorporated into described water cooling chamber (1) by described high-pressure pump
In.
10. synthesis gas washing dedusting dewatering system according to claim 1 it is characterised in that：
Described tube bank whizzer (4) top has syngas outlet；
Described tube bank whizzer (4) bottom is connected with described scrubbing tower (3), liquid in described tube bank whizzer (4)
Can be incorporated in described scrubbing tower (3)；
One or more high speed centrifugation are had in described tube bank whizzer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610950744.9A CN106398779A (en) | 2016-10-26 | 2016-10-26 | Synthetic gas washing, dedusting and dewatering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610950744.9A CN106398779A (en) | 2016-10-26 | 2016-10-26 | Synthetic gas washing, dedusting and dewatering system |
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| Publication Number | Publication Date |
|---|---|
| CN106398779A true CN106398779A (en) | 2017-02-15 |
Family
ID=58014169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610950744.9A Pending CN106398779A (en) | 2016-10-26 | 2016-10-26 | Synthetic gas washing, dedusting and dewatering system |
Country Status (1)
| Country | Link |
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| CN (1) | CN106398779A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110846084A (en) * | 2019-11-29 | 2020-02-28 | 北京航天迈未科技有限公司 | Dust separation and recovery equipment and method |
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