CN103820159B - A kind of dry coal powder gasification system - Google Patents
A kind of dry coal powder gasification system Download PDFInfo
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- CN103820159B CN103820159B CN201410069575.9A CN201410069575A CN103820159B CN 103820159 B CN103820159 B CN 103820159B CN 201410069575 A CN201410069575 A CN 201410069575A CN 103820159 B CN103820159 B CN 103820159B
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
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Abstract
The invention discloses a kind of dry coal powder gasification system, comprising: pulverized coal conveying device, for gasification installation pulverized coal conveying as gasified raw material; Gasification installation, for gasifying to produce raw gas to the coal dust from described pulverized coal conveying device; And raw gas scrubbing device, for carrying out scrubbing dust collection to the raw gas from described gasification installation.Adopt gasification system of the present invention, the raw gas going out shock chamber washs further through one-level, the washing of secondary Venturi scrubber and washing tower successively, to remove in raw gas more fine particle, make the dustiness of raw gas reach the requirement of shift conversion step, realize the long-period stable operation of system.
Description
Technical field
The present invention relates to gasification field, particularly relate to a kind of dry coal powder gasification system.
Background technology
The cleaning of coal and efficiency utilization are the important technical problems in energy and environment protection field, the world today, also be one of gordian technique of Chinese national economy sustainable development, gasification is main path primary energy source being changed into clean secondary energy, extensive high-effective gas technology is the coal-based chemicals production of development, Coal-based Liquid Fuel (synthetic oil, methyl alcohol, dme etc.), advanced integrated gasification combined cycle plants (IGCC) power generation system, polygenerations systeme, hydrogen manufacturing, the basis of the process industrial such as fuel cell and direct reduction iron making, it is the common techniques of these industries, gordian technique and leading technology.
Entrained flow bed gasification technology because of its coal applied widely, pit ash is required that the feature such as not harsh becomes the mainstream development direction of modern Coal Gasification Technology.Due to it, to realize extensive working time not long, its pulverized coal conveying device and raw gas washing design loaded down with trivial details, weak effect, wherein delivery system is always unstable, causes device frequently to stop, and washing system equipment is many especially, washing effect is poor, in raw gas, solid content is high, and equipment attrition is serious, and the life-span is short.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of dry coal powder gasification system, to solve the problem of existing dry coal powder gasification system cloud gray model instability.
For achieving the above object, the present invention is by the following technical solutions:
A kind of dry coal powder gasification system, described system comprises:
Pulverized coal conveying device, for gasification installation pulverized coal conveying as gasified raw material;
Gasification installation, for gasifying to produce raw gas to the coal dust from described pulverized coal conveying device; With
Raw gas scrubbing device, for carrying out scrubbing dust collection to the raw gas from described gasification installation;
Wherein, described raw gas scrubbing device comprises:
One-level Venturi scrubber, for washing the raw gas from described gasification installation;
One-level Venturi separating tank, for separating of from the raw gas of described one-level Venturi scrubber and washing water, to isolate raw gas and washing water;
Secondary Venturi scrubber, for washing the raw gas from described one-level Venturi separating tank further; With
Washing tower, for washing the raw gas from secondary Venturi scrubber.
According to system of the present invention, preferably, described pulverized coal conveying device comprises coal bunker, issuance of materials tank and the first lock hopper be connected between described coal bunker and issuance of materials tank and the second lock hopper; The bottom of described coal bunker is provided with two taper coal outlets, described two taper coal outlets are connected to the first lock hopper and the second lock hopper respectively by pipeline, the outlet at bottom of described first lock hopper and the second lock hopper is connected to described issuance of materials tank by pipeline, and the outlet at bottom of described issuance of materials tank is connected to described gasification installation by pipeline; Wherein, connecting tube between described coal bunker and the first lock hopper, the connecting tube between described coal bunker and the second lock hopper and the connecting tube between described first lock hopper and issuance of materials tank, connecting tube between the second lock hopper and issuance of materials tank are equipped with control valve, described first lock hopper and the second lock hopper are equipped with pressurising pipeline and pressure relief pipe.
According to system of the present invention, preferably, 3-5 root coal dust pipeline is provided with between described issuance of materials tank and described gasification installation.
According to system of the present invention, preferably, described gasification installation comprises vapourizing furnace, described vapourizing furnace comprises the combustion chamber on top and the shock chamber of bottom, described shock chamber comprises chilling ring and downtake, described chilling ring connects outside Quench water pipe, for spray and wash combustion chamber gasification generate raw gas; Described downtake is arranged on below chilling ring, for the chilled water after spray raw gas and raw gas being imported in the water-bath bottom described shock chamber.
According to system of the present invention, preferably, between the outer wall and shock chamber of described downtake, be provided with that 2-6 layer is broken steeps plate.
According to system of the present invention, preferably, described gasification installation also comprises drum and water cooler, is provided with water wall in the sidewall of described combustion chamber, and described drum is used for being separated from the gas-vapor mix in described water wall, isolates liquid water and steam; Described water cooler is used for cooling the liquid water from drum, is then sent back in described water wall by cooled liquid water.
According to system of the present invention, preferably, described gasification installation also comprises dreg-locking hopper and dragveyer, for discharging the slag of described vapourizing furnace.
According to system of the present invention, preferably, the washing water outlet of the bottom of described washing tower is connected to above downtake described in shock chamber through pipeline, for shock chamber provides raw gas washing water, and/or be connected to described one-level Venturi scrubber and secondary Venturi scrubber, to provide washing water through pipeline.
According to system of the present invention, preferably, be provided with the Pall ring metallic stuffing of loose heap in described washing tower, described filler is divided into and is upper and lowerly two-layerly arranged in described washing tower; Be provided with between described upper and lower two-layer filler and slightly wash washing water inlet, above the filler of upper strata, be provided with fine purifiation washing water inlet.
Dry coal powder gasification system provided by the invention makes full use of existing Quench purification process, make from combustion chamber raw gas in shock chamber first through chilled water Quench rinse after, import water-bath through downtake again and carry out final dusting, ash content in effective reduction synthetic gas, alleviate the load of subsequent wash workshop section simultaneously, go out the raw gas of shock chamber successively through one-level, the washing of secondary Venturi scrubber and washing tower wash further, to remove in raw gas more fine particle, the dustiness of raw gas is made to reach the requirement of shift conversion step, in addition, the present invention stablizes for the conveying of coal dust, be easy to control, pulverized coal flow fluctuation change in each coal dust pipeline is little, the long-period stable operation of feasible system.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of embodiment of dry coal powder gasification system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be described, but the present invention is not limited to this.
As shown in Figure 1, dry coal powder gasification system of the present invention comprises pulverized coal conveying device, gasification installation and raw gas scrubbing device.
Described pulverized coal conveying device is used to described gasification installation pulverized coal conveying as gasified raw material.In one embodiment of the invention, described pulverized coal conveying device comprises coal bunker 1, issuance of materials tank 3 and is connected to the first lock hopper 2 and the second lock hopper 2 ' between described coal bunker 1 and issuance of materials tank 3.Described coal bunker 1 is provided with two taper coal outlets, and described two taper coal outlets are connected to the first lock hopper 2 and the second lock hopper 2 ' respectively by pipeline.The outlet at bottom of described first lock hopper 2 and the second lock hopper 2 ' is connected to described issuance of materials tank 3 by pipeline, and the outlet at bottom of described issuance of materials tank 3 is connected to gasification installation by pipeline.Preferably, be provided with many coal dust pipelines between described issuance of materials tank and gasification installation, such as 3-5 root, more stable to make coal dust carry.
Wherein, connecting tube between described coal bunker 1 and the first lock hopper 2, the connecting tube between described coal bunker 1 and the second lock hopper 2 ' and the connecting tube between described first lock hopper 2 and issuance of materials tank 3, connecting tube between the second lock hopper 2 ' and issuance of materials tank 3 are equipped with control valve (not shown), described first lock hopper 2 and the second lock hopper 2 ' are equipped with pressurising pipeline and pressure relief pipe (not shown), the pressurising of such as nitrogen or carbonic acid gas or pressure relief pipe.
During operation, described first lock hopper 2 and the alternately pressurising pressure release of the second lock hopper 2 ', coal supply in issuance of materials tank 3.Such as, when after the first lock hopper 2 pressure release, open the control valve between the first lock hopper 2 and coal bunker 1, coal dust enters in the first lock hopper 2 under gravity, close this control valve, be pressurized to a little more than the pressure in issuance of materials tank 3 to the first lock hopper 2, open the control valve (control valve now between the second lock hopper 2 ' and issuance of materials tank 3 is closed) between the first lock hopper 2 and issuance of materials tank 3, coal dust enters in issuance of materials tank 3, control valve after completing between closedown first lock hopper 2 and issuance of materials tank 3, pressure release is carried out to the first lock hopper, so replaces.Coal dust in issuance of materials tank 3 is sent to gasification installation under the effect of pressure reduction, as gasified raw material.
Described gasification installation is used to gasify to produce raw gas to the coal dust from described pulverized coal conveying device.In one embodiment of the invention, described gasification installation comprises vapourizing furnace 5, described vapourizing furnace 5 comprises the combustion chamber 51 on top and the shock chamber 54 of bottom, described shock chamber 54 comprises chilling ring 56 and downtake 53, described chilling ring 56 connects outside Quench water pipe, for Quench and wash combustion chamber 51 gasify generate raw gas; Described downtake 53 is arranged on below chilling ring 56, imports in the water-bath bottom shock chamber 54 for the chilled water that sprayed out by chilling ring 56 and raw gas.The raw gas that gasification generates first carries out one-time dedusting through chilling ring 56 spraying cooling on top, shock chamber 54, import through downtake 53 again in the water-bath of bottom, shock chamber 54 and carry out final dusting, thus effectively reduce ash content in synthetic gas, alleviate the load of subsequent wash workshop section.
Preferably, between the outer wall and shock chamber 54 of described downtake 53, be provided with that 2-5 layer is broken steep plate 55, to abolish bubble, raising washing effect.
Washing water in described shock chamber 54 are exported by the washing water bottom shock chamber 54 and are sent to black water treatment system through pipeline.
In a preferred embodiment, described gasification installation also comprises drum 11 and water cooler 10, is provided with water wall in the sidewall 52 of described combustion chamber 51, to absorb the heat in combustion chamber, and the sidewall of protection combustion chamber.Described drum 11 is used to be separated from the gas-vapor mix in described water wall, and isolate liquid water and steam, wherein isolated steam is sent battery limit (BL).Cooled liquid water, for cooling from described drum 11 liquid water, is then sent back in water wall by described water cooler 10.
In another kind preferably embodiment, described gasification installation also comprises dreg-locking hopper 12 and dragveyer 13, to discharge the slag of vapourizing furnace 5.
Described raw gas scrubbing device is used to carry out scrubbing dust collection to the raw gas from described gasification installation.In one embodiment of the invention, described raw gas scrubbing device comprises one-level Venturi scrubber 6, one-level Venturi separating tank 7, secondary Venturi scrubber 8 and washing tower 9.
Described Venturi scrubber 6 is for washing the raw gas from vapourizing furnace shock chamber 54, and its washing principle is known in this field, just no longer describes in detail here.Raw gas after washing and washing water enter one-level Venturi separating tank 7 in the lump and carry out gas-liquid separation, and isolated raw gas enters secondary Venturi scrubber 8 from the abhiseca extraction of one-level Venturi separating tank 7 and washs further; The isolated bottom sending into washing tower 9 containing solid washings at the bottom of tank.Raw gas after described secondary Venturi scrubber 8 washs and washing water are admitted to the bottom of washing tower 9.
Described washing tower 9 for washing the raw gas from secondary Venturi scrubber 8 further, the raw gas of rising in washing tower 9 after washing water washing, exported by the raw gas at washing tower 9 top and be sent to conversion section through pipeline.Can arrange column plate and/or packing layer in described washing tower 9, in one embodiment of the invention, be provided with the metallic stuffing of loose heap Pall ring in described washing tower 9, described filler is divided into two-layer, and the height of every layer of filler can be 3-5m.Raw gas rises at the bottom of tower, and washing water spray from tower top, and through filler, washing water fully contact with raw gas, thus takes away fine solid particles in raw gas, and the raw gas after washing is drawn by washing tower 26 tower top and is sent to next conversion section.
Preferably, described washing tower 9 is provided with and slightly washes washing water inlet between two-layer filler, slightly washes raw gas, and its bath water can from the buck of conversion section; Above whole filler, be provided with fine purifiation washing water inlet, its bath water can be the phlegma from conversion section, carries out fine purifiation to the coal gas risen in tower.
Washing water outlet bottom described washing tower 9 is connected to shock chamber 54 and/or one-level, secondary Venturi scrubber 6,8 respectively through pipeline, is used separately as the washing water of the wash-down water of shock chamber 54 and one-level, secondary Venturi scrubber 6,8.
Claims (6)
1. a dry coal powder gasification system, described system comprises:
Pulverized coal conveying device, for gasification installation pulverized coal conveying as gasified raw material, comprise described pulverized coal conveying device and comprise coal bunker, issuance of materials tank and the first lock hopper be connected between described coal bunker and issuance of materials tank and the second lock hopper; The bottom of described coal bunker is provided with two taper coal outlets, described two taper coal outlets are connected to the first lock hopper and the second lock hopper respectively by pipeline, the outlet at bottom of described first lock hopper and the second lock hopper is connected to described issuance of materials tank by pipeline, and the outlet at bottom of described issuance of materials tank is connected to described gasification installation by pipeline; Wherein, connecting tube between described coal bunker and the first lock hopper, the connecting tube between described coal bunker and the second lock hopper and the connecting tube between described first lock hopper and issuance of materials tank, connecting tube between the second lock hopper and issuance of materials tank are equipped with control valve, described first lock hopper and the second lock hopper are equipped with pressurising pipeline and pressure relief pipe;
Gasification installation, for gasifying to produce raw gas to the coal dust from described pulverized coal conveying device, is provided with 3-5 root coal dust pipeline between described issuance of materials tank and described gasification installation; With
Raw gas scrubbing device, for carrying out scrubbing dust collection to the raw gas from described gasification installation;
Wherein, described raw gas scrubbing device comprises:
One-level Venturi scrubber, for washing the raw gas from described gasification installation;
One-level Venturi separating tank, for separating of from the raw gas of described one-level Venturi scrubber and washing water, to isolate raw gas and washing water;
Secondary Venturi scrubber, for washing the raw gas from described one-level Venturi separating tank further; With
Washing tower, for washing the raw gas from secondary Venturi scrubber; Be provided with the Pall ring metallic stuffing of loose heap in described washing tower, described filler is divided into and is upper and lowerly two-layerly arranged in described washing tower, and the height of every layer of filler is 3-5m; Be provided with between described upper and lower two-layer filler and slightly wash washing water inlet, above the filler of upper strata, be provided with fine purifiation washing water inlet.
2. the system as claimed in claim 1, it is characterized in that, described gasification installation comprises vapourizing furnace, described vapourizing furnace comprises the combustion chamber on top and the shock chamber of bottom, described shock chamber comprises chilling ring and downtake, described chilling ring connects outside Quench water pipe, for spray and wash combustion chamber gasification generate raw gas; Described downtake is arranged on below chilling ring, for the chilled water after spray raw gas and raw gas being imported in the water-bath bottom described shock chamber.
3. system as claimed in claim 2, is characterized in that, is provided with that 2-6 layer is broken steeps plate between the outer wall and shock chamber of described downtake.
4. system as claimed in claim 2, it is characterized in that, described gasification installation also comprises drum and water cooler, is provided with water wall in the sidewall of described combustion chamber, described drum is used for being separated from the gas-vapor mix in described water wall, isolates liquid water and steam; Described water cooler is used for cooling the liquid water from drum, is then sent back in described water wall by cooled liquid water.
5. system as claimed in claim 2, it is characterized in that, described gasification installation also comprises dreg-locking hopper and dragveyer, for discharging the slag of described vapourizing furnace.
6. system as claimed in claim 2, it is characterized in that, the washing water outlet of the bottom of described washing tower is connected to above downtake described in shock chamber through pipeline, for shock chamber provides raw gas washing water, and/or be connected to described one-level Venturi scrubber and secondary Venturi scrubber, to provide washing water through pipeline.
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| CN201410069575.9A CN103820159B (en) | 2014-02-27 | 2014-02-27 | A kind of dry coal powder gasification system |
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| CN201410069575.9A CN103820159B (en) | 2014-02-27 | 2014-02-27 | A kind of dry coal powder gasification system |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104263415A (en) * | 2014-09-28 | 2015-01-07 | 中国东方电气集团有限公司 | Dry pulverized coal gasification device |
| CN104479751A (en) * | 2014-12-09 | 2015-04-01 | 贵州开阳化工有限公司 | High-efficiency gasification device suitable for multiple kinds of coal |
| CN106731375B (en) * | 2016-12-02 | 2022-08-16 | 上海泽玛克敏达机械设备有限公司 | Raw gas scrubbing system and method |
| CN109628149A (en) * | 2019-01-22 | 2019-04-16 | 鲁南煤化工研究院 | A kind of gasification system |
| CN112940796A (en) * | 2021-02-02 | 2021-06-11 | 内蒙古中煤远兴能源化工有限公司 | Synthetic gas washing system and washing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1721511A (en) * | 2005-07-01 | 2006-01-18 | 煤炭科学研究总院北京煤化工研究分院 | Process for pressurized gasification of dry coal fines |
| CN2908510Y (en) * | 2005-12-14 | 2007-06-06 | 华东理工大学 | Multi-nozzle water coal fluid or pulverized coal gasification furnace for water coal fluid or pulverized coal gasification |
| CN202865188U (en) * | 2012-10-25 | 2013-04-10 | 神华集团有限责任公司 | Dry power gasification device |
| CN203144351U (en) * | 2013-03-05 | 2013-08-21 | 上海锅炉厂有限公司 | Entrained-flow bed gasifying furnace with single nozzle |
| CN103275761A (en) * | 2013-06-25 | 2013-09-04 | 朱清敏 | Method and device for manufacturing chemical virgin gas with solid organic materials |
| CN203782114U (en) * | 2014-02-27 | 2014-08-20 | 神华集团有限责任公司 | Dry pulverized coal gasification system |
-
2014
- 2014-02-27 CN CN201410069575.9A patent/CN103820159B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1721511A (en) * | 2005-07-01 | 2006-01-18 | 煤炭科学研究总院北京煤化工研究分院 | Process for pressurized gasification of dry coal fines |
| CN2908510Y (en) * | 2005-12-14 | 2007-06-06 | 华东理工大学 | Multi-nozzle water coal fluid or pulverized coal gasification furnace for water coal fluid or pulverized coal gasification |
| CN202865188U (en) * | 2012-10-25 | 2013-04-10 | 神华集团有限责任公司 | Dry power gasification device |
| CN203144351U (en) * | 2013-03-05 | 2013-08-21 | 上海锅炉厂有限公司 | Entrained-flow bed gasifying furnace with single nozzle |
| CN103275761A (en) * | 2013-06-25 | 2013-09-04 | 朱清敏 | Method and device for manufacturing chemical virgin gas with solid organic materials |
| CN203782114U (en) * | 2014-02-27 | 2014-08-20 | 神华集团有限责任公司 | Dry pulverized coal gasification system |
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