CN104087346A - Novel dry coal powder entrained-flow bed deslagging system - Google Patents
Novel dry coal powder entrained-flow bed deslagging system Download PDFInfo
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- CN104087346A CN104087346A CN201410309625.6A CN201410309625A CN104087346A CN 104087346 A CN104087346 A CN 104087346A CN 201410309625 A CN201410309625 A CN 201410309625A CN 104087346 A CN104087346 A CN 104087346A
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Abstract
The invention discloses a novel dry coal powder entrained-flow bed deslagging system for cooling, pelletizing and discharging liquid slag flowing out from a slag outlet. The system comprises a slag collector, a slag locking funnel and a slag dehydrating tank, wherein the slag locking funnel is arranged at a slag collector outlet and is connected with a pressure circulation pump; the slag dehydrating tank is arranged at a slag locking funnel outlet and is provided with a chain slag fishing machine; the slag collector is used for collecting slag generated inside a slag tank and a slag crushing machine; a first double-valve group consisting of a first valve and a second valve is arranged on a connecting pipeline of the slag collector and the slag locking funnel; a second double-valve group consisting of a third valve and a fourth valve is arranged on a connecting pipeline of the slag locking funnel and the slag dehydrating tank; and the connecting pipeline of the slag locking funnel and the slag dehydrating tank is connected with a high pressure water inlet tube with a high pressure washing partitioning valve. The system has the characteristics of security, simplicity and convenience in operation, effective blocked slag removal of a locking funnel system, and the like, and a constraint factor of long-term stable operation of a gasification device is eliminated.
Description
Technical field
The invention belongs to entrained flow gasification field, relate to a kind of slag discharging device, particularly a kind of New-type dry coal powder gas flow bed dreg removing system.
Background technology
Entrained flow gasification is a kind of important form of gasification of coal, and feed coal is to enter stove with powdery, and fine coal sprays into vapourizing furnace with vaporized chemical together with nozzle or burner, mixes fully, burning and gasification reaction in vapourizing furnace.Vapourizing furnace provides reaction compartment for gasification reaction, and the temperature of reaction of entrained flow gasification is very high, is generally maintained to the high temperature of 1400-2000 DEG C, thereby has ensured the conversion completely of carbon.Gasification adopts slag tap mode, and slag is at high temperature in a liquid state, and on vapourizing furnace furnace wall, is cooled, and forms solid-state and liquid slag film, and liquid slag flows downward along vapourizing furnace furnace wall, flows out from cinder notch.Flying dust enters follow-up system with high-temperature flue gas and carries out separating treatment.
In order to maintain the long-term operation of vapourizing furnace, the normal operation of slag removing system is restraining factors of gasification installation long-period stable operation.In device operational process, occur that stifled slag is inevitably, as the frequent switching of coal, the bad variation of gasifier temperature control is too fast, temperature is too low, coal character shakiness is established a capital and may be caused knot bulk and the stifled slag of thin slag.Need to process timely once there is blocking up slag phenomenon, avoid affecting for a long time lock hopper deslagging, thereby cause the stifled slag of vapourizing furnace to stop.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of New-type dry coal powder gas flow bed dreg removing system, have rational in infrastructure, safe and reliable, easy and simple to handlely, effectively remove the features such as the stifled slag of lock hopper system.
To achieve these goals, the technical solution used in the present invention is:
A kind of New-type dry coal powder gas flow bed dreg removing system, comprising:
Slag collector 1;
Connect the dreg-locking hopper 2 that slag collector 1 exports;
And connect the slag dewatering tank 3 that dreg-locking hopper 2 exports;
Wherein:
On the connecting tube of described slag collector 1 and dreg-locking hopper 2, the first bivalve group being made up of the first valve 4 and the second valve 5 is set;
On the connecting tube of described dreg-locking hopper 2 and slag dewatering tank 3, the second bivalve group being made up of the 3rd valve 6 and the 4th valve 7 is set;
Described dreg-locking hopper 2 is connected the high-pressure intake pipe with high-pressure washing water shutdown valve 8 with the connecting tube of slag dewatering tank 3.
Described dreg-locking hopper 2 Bonding pressure recycle pumps.
Described high-pressure intake pipe is connected on the pipeline between the 3rd valve 6 and the 4th valve 7.
In described slag dewatering tank 3, be provided with chain dragveyer.
Compared with prior art, the present invention has adopted the technical scheme that connects pressure water flushing line in lock hopper bottom, has safe, easy and simple to handlely, effectively removes the features such as the stifled slag of lock hopper system, has eliminated restraining factors of gasification installation long-period stable operation.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Embodiment
Describe embodiments of the present invention in detail below in conjunction with drawings and Examples.
As shown in Figure 1, a kind of New-type dry coal powder gas flow bed dreg removing system, is responsible for liquid slag cools, the granulation that slag outlet is flowed out and discharges.Comprise slag collector 1, connect the dreg-locking hopper that is connected to pressure cycling pump 2 that slag collector 1 exports and connect that dreg-locking hopper 2 exports with the slag dewatering tank 3 that has chain dragveyer.Slag collector 1 is accepted the slag particle generating in slag bath and dregs breaker, and the first bivalve group being made up of the first valve 4 and the second valve 5 is set on the connecting tube of slag collector 1 and dreg-locking hopper 2; The the second bivalve group being made up of the 3rd valve 6 and the 4th valve 7 is set on the connecting tube of dreg-locking hopper 2 and slag dewatering tank 3; And dreg-locking hopper 2 is connected the high-pressure intake pipe with high-pressure washing water shutdown valve 8 with the connecting tube of slag dewatering tank 3, high-pressure intake pipe is connected on the pipeline between the 3rd valve 6 and the 4th valve 7.
Principle of work of the present invention is as follows:
The stifled slag ratio in dreg-locking hopper 2 bottoms is more common, wherein causes the situation of the stifled slag in dreg-locking hopper 2 tops all easily to make dreg-locking hopper 2 bottoms stifled, and dreg-locking hopper 2 collects the slag time and longly also easily makes dreg-locking hopper 2 bottoms block up slag simultaneously.In the time of dreg-locking hopper 2 stifled slag, can judge by 2 slagging times of dreg-locking hopper and the quantity of slag.The in the situation that of impact in the case of getting rid of other factors, slagging time shorten and the quantity of slag can be judged as the stifled slag in dreg-locking hopper 2 bottoms reducing.
Slag collector 1 is full of after slag particle, and the first bivalve group is opened, and slag particle is sent in the dreg-locking hopper 2 having boosted.In the time judging the stifled slag in dreg-locking hopper 2 bottoms, close the first bivalve group, dreg-locking hopper 2 and slag collector 1 are isolated, to dreg-locking hopper 2 pressure releases, open the second bivalve group simultaneously, slag particle is released in slag dewatering tank 3.Then, make the mass-flow counterflush of gap zone pressure by high-pressure washing water shutdown valve 8, make the stifled slag of dreg-locking hopper 2 bottoms loosening, and then carry out deslagging operation.The thick slag that enters slag dewatering tank 3 is removed by chain dragveyer, contains the thin slag being made up of slag and unburned coal in remaining water, and with being pumped in clarifying tank, solid matter is removed with coal slime form.The so repeated multiple times slag that impels is got rid of the normal operation to ensure dreg removing system smoothly, thereby ensures gasification installation long-period stable operation.
Claims (4)
1. a New-type dry coal powder gas flow bed dreg removing system, is characterized in that, comprising:
Slag collector (1);
Connect the dreg-locking hopper (2) of slag collector (1) outlet;
And connect the slag dewatering tank (3) of dreg-locking hopper (2) outlet;
Wherein:
The the first bivalve group being made up of the first valve (4) and the second valve (5) is set on the connecting tube of described slag collector (1) and dreg-locking hopper (2);
The the second bivalve group being made up of the 3rd valve (6) and the 4th valve (7) is set on the connecting tube of described dreg-locking hopper (2) and slag dewatering tank (3);
Described dreg-locking hopper (2) is connected the high-pressure intake pipe with high-pressure washing water shutdown valve (8) with the connecting tube of slag dewatering tank (3).
2. New-type dry coal powder gas flow bed dreg removing system according to claim 1, is characterized in that, described dreg-locking hopper (2) Bonding pressure recycle pump.
3. New-type dry coal powder gas flow bed dreg removing system according to claim 1, is characterized in that, described high-pressure intake pipe is connected on the pipeline between the 3rd valve (6) and the 4th valve (7).
4. New-type dry coal powder gas flow bed dreg removing system according to claim 1, is characterized in that, in described slag dewatering tank (3), is provided with chain dragveyer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410309625.6A CN104087346A (en) | 2014-07-01 | 2014-07-01 | Novel dry coal powder entrained-flow bed deslagging system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410309625.6A CN104087346A (en) | 2014-07-01 | 2014-07-01 | Novel dry coal powder entrained-flow bed deslagging system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848036A (en) * | 2015-05-14 | 2015-08-19 | 曹显奎 | System for continuously decompressing high pressure fluid containing solid particles |
| CN111575058A (en) * | 2020-06-08 | 2020-08-25 | 山西潞安煤基清洁能源有限责任公司 | Deslagging method for high-sulfur coal after high-temperature gasification |
| CN112538388A (en) * | 2020-11-18 | 2021-03-23 | 恒力石化（大连）炼化有限公司 | High-quality coal gasification coarse slag treatment device and method |
| CN113004944A (en) * | 2021-03-29 | 2021-06-22 | 中国华能集团清洁能源技术研究院有限公司 | Slag discharging system of entrained flow gasifier |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848036A (en) * | 2015-05-14 | 2015-08-19 | 曹显奎 | System for continuously decompressing high pressure fluid containing solid particles |
| CN111575058A (en) * | 2020-06-08 | 2020-08-25 | 山西潞安煤基清洁能源有限责任公司 | Deslagging method for high-sulfur coal after high-temperature gasification |
| CN112538388A (en) * | 2020-11-18 | 2021-03-23 | 恒力石化（大连）炼化有限公司 | High-quality coal gasification coarse slag treatment device and method |
| CN113004944A (en) * | 2021-03-29 | 2021-06-22 | 中国华能集团清洁能源技术研究院有限公司 | Slag discharging system of entrained flow gasifier |
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Application publication date: 20141008 |