CN202786150U - Chilling washing system for raw gas gasified by dry pulverized coal - Google Patents
Chilling washing system for raw gas gasified by dry pulverized coal Download PDFInfo
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- CN202786150U CN202786150U CN201220445216.5U CN201220445216U CN202786150U CN 202786150 U CN202786150 U CN 202786150U CN 201220445216 U CN201220445216 U CN 201220445216U CN 202786150 U CN202786150 U CN 202786150U
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Abstract
The utility model relates to a chilling washing system for raw gas gasified by dry pulverized coal, which is used for solving the problems that the raw gas after washing is high in dust content and affects the subsequent production. In a washing system, the raw gas from a gasifier combustion chamber is firstly chilled by chilling water in a chilling chamber, then washed by washing water, and introduced into a water bath for secondary dust removal through a downcomer, so as to effectively reduce the ash content of synthesis gas and the load in a subsequent washing process; and the raw gas passing through the chilling chamber is washed by a venturi scrubber, separated by a cyclone separation tank and further washed by a carbon washing tower, so that finer particles in the raw gas are removed, and the dust content of the raw gas meets the requirement of procedure conversion, as a result, the long-period stable operation of the system is realized.
Description
Technical field
The utility model belongs to the gasification of coal field, is specifically related to a kind of Quench washing system of dry coal powder gasification raw gas.
Background technology
Entrained flow bed gasification technology is applied widely because of its coal, requires the characteristics such as not harsh to become the mainstream development direction of modern Coal Gasification Technology to pit ash.Traditional airflow bed gasification furnace comprises the combustion chamber on top and the shock chamber of bottom, and the crude synthesis gas that gasification generates in the combustion chamber through the chilling ring spray on top, shock chamber, with cooling, scrubbing dust collection, then is sent to subsequent wash workshop section and further washs first.Maximization along with airflow bed gasification furnace, raw gas output improves constantly, the effect of the preliminary scrubbing dust collection of chilling ring becomes and is difficult to reach requirement, cause gasification, washing system a series of problem in operational process, to occur: such as wearing and tearing, the obstruction fouling of washing system pipeline and equipment, more seriously the conversion preheater stops up, and causes the poor problem such as large of shift bed lamination.The thin ash, the water smoke that contain in the raw gas in addition very easily are attracted to catalyst surface at transformation system, make catalyst activity reduction, have a strong impact on normal production, cause great financial loss.Conventional counter-measure is to set up washing, tripping device in system, and such as Venturi scrubber, cyclonic separation tank etc., this need to strengthen facility investment, increase energy consumption and water consumption.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of Quench washing system of dry coal powder gasification raw gas, to solve the problem that raw gas ash oontent after Quench and washing is high, affect subsequent production, improves raw gas Quench and washing effect.
For achieving the above object, the utility model is by the following technical solutions:
A kind of Quench washing system of dry coal powder gasification raw gas comprises:
Vapourizing furnace, comprise the combustion chamber on top and the shock chamber of bottom, described shock chamber comprises chilling ring and downtake, described chilling ring is used for Quench and washs the raw gas that generates in the combustion chamber gasification, described downtake is arranged on the chilling ring below, be used for to receive from the raw gas of top and chilled water and with it and import the water-bath of bottom, shock chamber, with further washing raw gas;
Venturi scrubber be used for washing from the raw gas of vapourizing furnace, and the gas after will washing is sent to the cyclonic separation tank;
The cyclonic separation tank, for separating of from the liquid-solid phase in the raw gas of Venturi scrubber, and the gas phase after will separating is delivered to carbon and is washed tower;
Carbon is washed tower, be used for washing from the raw gas of cyclonic separation tank, and the raw gas after will washing is sent to next workshop section.
As preferred embodiment a kind of, the washing water outlet that described carbon is washed the bottom of tower is connected to the top of downtake described in the shock chamber through pipeline, for the shock chamber provides the raw gas wash-down water, and/or be connected to Venturi scrubber through pipeline, for Venturi scrubber provides washing water.
As preferred embodiment a kind of, described downtake is funnel-form, and the edge of the upper end open of described downtake is near the inwall of described shock chamber, and the lower ending opening of described downtake stretches in the water-bath of bottom, described shock chamber.
As preferred embodiment a kind of, the outlet of the raw gas of described Venturi scrubber is positioned at below the liquid level of cyclonic separation pot liquid with the link position of cyclonic separation tank.
As preferred embodiment a kind of, the outlet of the washing water of described Venturi scrubber is connected to cyclonic separation tank bottom through pipeline, and the washing water outlet of described cyclonic separation tank and shock chamber is connected to black water treatment system through pipeline, carries out regeneration.
As preferred embodiment a kind of, described black water treatment system comprises: flash system is used for that the washing water from cyclonic separation tank and shock chamber are carried out flash distillation and processes; Subsider is used for the flash liquid that flash distillation obtains is carried out sedimentation.
As preferred embodiment a kind of, described system comprises the Quench water pot, and being used for provides chilled water to the shock chamber, and the supernatant liquid outlet of described subsider is connected to described Quench water pot through pipeline.
As seen from the above technical solution, the Quench washing system of the dry coal powder gasification raw gas that the utility model provides, deficiency for present gasifying process, take full advantage of existing Quench purification process, make from vapourizing furnace combustion chamber raw gas in the shock chamber at first after the chilled water Quench, wash with wash-down water again, then import water-bath through downtake and carry out final dusting, effectively reduce ash content in the synthetic gas, alleviate simultaneously the load of subsequent wash workshop section, the raw gas that goes out the shock chamber washs through Venturi scrubber successively, the cyclonic separation tank separates and carbon is washed tower and further washed, and to remove in the raw gas more fine particle, makes the dustiness of raw gas less than 1mg/m
3, reach the requirement of shift conversion step, realize the long-period stable operation of system.
Description of drawings
The synoptic diagram of a kind of embodiment of the raw gas Quench washing system that Fig. 1 provides for the utility model.
The synoptic diagram of the another kind of embodiment of the raw gas Quench washing system that Fig. 2 provides for the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated, but the utility model is not limited to this embodiment and scope shown in the drawings.
Fig. 1 shows the Quench washing system of a kind of dry coal powder gasification raw gas that the utility model provides, and described raw gas washing system comprises that vapourizing furnace 1, Venturi scrubber 2, cyclonic separation tank 3 and carbon washes tower 4.
Wherein, described vapourizing furnace 1 comprises the combustion chamber 11 on top and the shock chamber 12 of bottom, and described shock chamber 12 comprises chilling ring 121 and downtake 122, and described chilling ring 121 connects outside Quench water pipe, is used for Quench and washs the raw gas that the combustion chamber gasification generates; Described downtake 122 is arranged on chilling ring 121 belows, the water-bath that the chilled water after being used for spraying and raw gas import 12 bottoms, shock chamber.The raw gas that gasification generates carries out one-time dedusting through chilling ring 121 spraying coolings on 12 tops, shock chamber first, imports in the water-bath through downtake 122 and carries out final dusting, thereby effectively reduce ash content in the synthetic gas, alleviates the load of subsequent wash workshop section.
Preferably, described downtake 122 is funnel-form, and the edge of the upper end open of described downtake 122 is near the inwall of described shock chamber 12, and the lower ending opening of described downtake 122 stretches in the water-bath of bottom, described shock chamber.
Raw gas by water-bath washing 12 is delivered to Venturi scrubber 2 through pipeline from the shock chamber, and described Venturi scrubber 2 is used for washing from the raw gas of vapourizing furnace shock chamber 12, and its washing principle is known in this field, just no longer describes in detail here; The raw gas outlet of described Venturi scrubber is connected to cyclonic separation tank bottom through pipeline, and preferably, its link position is positioned at below the liquid level of cyclonic separation pot liquid, with the washing raw gas; Raw gas from Venturi scrubber 2 is isolated solid liquid phase in described cyclonic separation tank 3, its separation principle is separated for the effect by centrifugal force, such as being provided with the flow-guiding structure that makes raw gas produce eddy flow in the described cyclonic separation tank 3.Deliver to carbon by the raw gas outlet at described cyclonic separation tank 3 tops through pipeline and wash tower 4 bottoms; Described carbon is washed tower 4 and is used for further washing from the raw gas of cyclonic separator 3, and it is interior after the washing water washing that the raw gas of rising is washed tower 4 at carbon, washed the raw gas outlet at tower 4 tops by carbon and be sent to conversion section through pipeline.Described carbon washes that tower 4 is interior can to arrange column plate and/or packing layer, rises wash the tower of tower 4 from described carbon such as, raw gas at the bottom of, and washing water spray from cat head, and during through column plate, washing water fully contact with raw gas, thereby take away fine solid particles in the raw gas.
Described carbon is washed the washing water of tower 4 can be from the lime set of conversion section and/or the recirculated water of usage on black water unit, the washing water outlet that described carbon is washed tower 4 bottoms is connected to respectively shock chamber 12 and Venturi scrubber 2 through pipeline, is used separately as the wash-down water of shock chamber 12 and the washing water of Venturi scrubber 2.The washing water outlet line of described Venturi scrubber 2 bottoms is connected to cyclonic separation tank 3 bottoms, mixes with isolated solid liquid phase in the raw gas in described cyclonic separation tank 3, is sent to black water treatment system from the outlet of described cyclonic separation tank 3 bottoms through pipeline.Washing water in the described shock chamber are sent to black water treatment system by the washing water outlet of bottom, shock chamber through pipeline.
In another kind of embodiment of the present utility model, as shown in Figure 2, described raw gas Quench washing system also comprises Quench water pot 5, and being used for to the shock chamber 12 provides chilled water.Described Heisui River system comprises black water flash system 6 and subsider 7, Heisui River from shock chamber 12 and cyclonic separation tank 3 at first enters black water flash system 6, behind double flash evaporation, send into subsider 7, in described subsider 7 interior adding flocculation agents, sedimentation, in the subsider 7 concentrated phase of lower floor's sedimentation after filtering, filter cake is sent the battery limit (BL).The outlet of the supernatant liquid of described subsider 7 is connected to described Quench water pot 5 through pipeline, upper strata clear return mutually gasification system with from the water of condensation outside the battery limit (BL) as chilled water and wash-down water recycle.Can effectively reduce like this ash content in the washing water, reduce the abrasion to chilled water shower nozzle and Venturi shower nozzle, improve detersive efficiency, realize the long-period stable operation of system.
Obviously, those skilled in the art can carry out various changes and distortion to the utility model, and does not break away from purport of the present utility model.Like this, if these changes of the present utility model and distortion belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and is out of shape interior.
Claims (7)
1. the raw gas washing system of a chilling-type dry coal powder gasification is characterized in that, described system comprises:
Vapourizing furnace, comprise the combustion chamber on top and the shock chamber of bottom, described shock chamber comprises chilling ring and downtake, described chilling ring is used for Quench and washs the raw gas that generates in the combustion chamber gasification, described downtake is arranged on the chilling ring below, be used for to receive from the raw gas of top and chilled water and with it and import the water-bath of bottom, shock chamber, with further washing raw gas;
Venturi scrubber be used for washing from the raw gas of vapourizing furnace, and the gas after will washing is sent to the cyclonic separation tank;
The cyclonic separation tank, for separating of from the liquid-solid phase in the raw gas of Venturi scrubber, and the gas phase after will separating is delivered to carbon and is washed tower;
Carbon is washed tower, be used for washing from the raw gas of cyclonic separation tank, and the raw gas after will washing is sent to next workshop section.
2. system according to claim 1, it is characterized in that, the washing water outlet that described carbon is washed the bottom of tower is connected to the top of downtake described in the shock chamber through pipeline, for the shock chamber provides the raw gas wash-down water, and/or be connected to Venturi scrubber through pipeline, for Venturi scrubber provides washing water.
3. system according to claim 1 is characterized in that, described downtake is funnel-form, and the edge of the upper end open of described downtake is near the inwall of described shock chamber, and the lower ending opening of described downtake stretches in the water-bath of bottom, described shock chamber.
4. system according to claim 1 is characterized in that, the raw gas outlet of described Venturi scrubber is positioned at below the liquid level of cyclonic separation pot liquid with the link position of cyclonic separation tank.
5. system according to claim 2, it is characterized in that, the washing water outlet of described Venturi scrubber is connected to cyclonic separation tank bottom through pipeline, and the washing water outlet of described cyclonic separation tank and shock chamber is connected to black water treatment system through pipeline, carries out regeneration.
6. system according to claim 5 is characterized in that, described black water treatment system comprises: flash system is used for that the washing water from cyclonic separation tank and shock chamber are carried out flash distillation and processes; Subsider is used for the flash liquid that flash distillation obtains is carried out sedimentation.
7. system according to claim 6 is characterized in that, described system comprises the Quench water pot, and being used for provides chilled water to the shock chamber, and the supernatant liquid outlet of described subsider is connected to described Quench water pot through pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220445216.5U CN202786150U (en) | 2012-09-03 | 2012-09-03 | Chilling washing system for raw gas gasified by dry pulverized coal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220445216.5U CN202786150U (en) | 2012-09-03 | 2012-09-03 | Chilling washing system for raw gas gasified by dry pulverized coal |
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| CN202786150U true CN202786150U (en) | 2013-03-13 |
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| CN201220445216.5U Expired - Lifetime CN202786150U (en) | 2012-09-03 | 2012-09-03 | Chilling washing system for raw gas gasified by dry pulverized coal |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103525470A (en) * | 2013-10-14 | 2014-01-22 | 煤炭科学研究总院 | Synclastic multi-shaft gasification device |
| CN104312637A (en) * | 2014-11-10 | 2015-01-28 | 北京华福工程有限公司 | Efficient separating equipment special for chilling, deoiling and dedusting of pyrolysis gas |
| CN104667683A (en) * | 2013-11-29 | 2015-06-03 | 华东理工大学 | Graded purification device and graded purification method for dusty gas |
| CN105062574A (en) * | 2015-08-31 | 2015-11-18 | 山东兖矿国拓科技工程有限公司 | Efficient combined dusty syngas washing dust removal device and method thereof |
| CN105176600A (en) * | 2015-10-15 | 2015-12-23 | 上海锅炉厂有限公司 | Washing tower structure |
| CN106731375A (en) * | 2016-12-02 | 2017-05-31 | 上海泽玛克敏达机械设备有限公司 | raw gas washing system and method |
| CN106967461A (en) * | 2017-05-05 | 2017-07-21 | 北京清创晋华科技有限公司 | A kind of raw gas dedusting and cooling system and method |
| CN109628149A (en) * | 2019-01-22 | 2019-04-16 | 鲁南煤化工研究院 | A kind of gasification system |
| CN113563931A (en) * | 2021-08-03 | 2021-10-29 | 山东明泉新材料科技有限公司 | Technological method integrating gas gathering reaction and gas separation |
-
2012
- 2012-09-03 CN CN201220445216.5U patent/CN202786150U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103525470B (en) * | 2013-10-14 | 2015-09-30 | 煤炭科学技术研究院有限公司 | One is multiaxis coal gasification apparatus in the same way |
| CN103525470A (en) * | 2013-10-14 | 2014-01-22 | 煤炭科学研究总院 | Synclastic multi-shaft gasification device |
| CN104667683B (en) * | 2013-11-29 | 2016-09-21 | 华东理工大学 | The stage purification equipment of dusty gas and the stage purification method of dusty gas |
| CN104667683A (en) * | 2013-11-29 | 2015-06-03 | 华东理工大学 | Graded purification device and graded purification method for dusty gas |
| CN104312637A (en) * | 2014-11-10 | 2015-01-28 | 北京华福工程有限公司 | Efficient separating equipment special for chilling, deoiling and dedusting of pyrolysis gas |
| CN105062574A (en) * | 2015-08-31 | 2015-11-18 | 山东兖矿国拓科技工程有限公司 | Efficient combined dusty syngas washing dust removal device and method thereof |
| CN105176600A (en) * | 2015-10-15 | 2015-12-23 | 上海锅炉厂有限公司 | Washing tower structure |
| CN106731375A (en) * | 2016-12-02 | 2017-05-31 | 上海泽玛克敏达机械设备有限公司 | raw gas washing system and method |
| 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 |
| CN106967461A (en) * | 2017-05-05 | 2017-07-21 | 北京清创晋华科技有限公司 | A kind of raw gas dedusting and cooling system and method |
| CN109628149A (en) * | 2019-01-22 | 2019-04-16 | 鲁南煤化工研究院 | A kind of gasification system |
| CN113563931A (en) * | 2021-08-03 | 2021-10-29 | 山东明泉新材料科技有限公司 | Technological method integrating gas gathering reaction and gas separation |
| CN113563931B (en) * | 2021-08-03 | 2024-03-26 | 山东明泉新材料科技有限公司 | Technological method integrating gasification reaction and gas separation |
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