CN213357476U - Gasification fine slag recycling system - Google Patents
Gasification fine slag recycling system Download PDFInfo
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- CN213357476U CN213357476U CN202022163388.0U CN202022163388U CN213357476U CN 213357476 U CN213357476 U CN 213357476U CN 202022163388 U CN202022163388 U CN 202022163388U CN 213357476 U CN213357476 U CN 213357476U
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Abstract
The utility model provides a system is recycled to gasification fine slag, including grey water treatment facilities, the clarifier is connected to grey water treatment facilities lower part black water output, clarifier lower part liquid output connects the filter feed pump, filter feed pump liquid output connects the fine slag filter, fine slag filter lotion exit linkage fine slag storage tank, fine slag storage tank lower part exit linkage conveyor, conveyor exit linkage mill, mill exit linkage mill export groove, mill export groove bottom coal thick liquid exit linkage low pressure coal stuff pump, the coal thick liquid passes through the low pressure coal stuff pump and connects coal thick liquid groove upper portion, the high pressure coal stuff pump of coal thick liquid groove lower part coal thick liquid exit linkage, high pressure coal stuff pump exit linkage gasifier. The utility model discloses the further burning of the fine sediment of the outer row of fine sediment of will transporting out, calorific value make full use of to make the resource obtain further utilization, improve the utilization ratio of resource.
Description
Technical Field
The utility model relates to a thin sediment of gasifier technical field of recycling, in particular to thin sediment of gasification system of recycling.
Background
At present, the production and consumption of coal resources in China are very large. Conventional coal gasification plants all produce large quantities of coal slag. Under the situation of energy crisis and strict environmental regulations, the comprehensive utilization of coal cinder is more and more emphasized. The single furnace capacity of the coal water slurry gasification furnace is large, the gasification strength is high, the coal type application range is wide, and the application prospect is wide. Because the production capacity of the coal water slurry gasification furnace is large, correspondingly generated coarse slag and fine slag are also large, the carbon content of the coarse slag of the gasification furnace is less than 10 percent, the calorific value is low by 500 kilocalories, and the coal water slurry gasification furnace is mainly used for the building and cement industries; the gasified fine slag is the sediment of black water generated by filtering and cleaning coal gas in the coal gasification process, has high carbon content of about 30 percent, has high combustion value with the heat value of between 1300 and 1600 kilocalories, and not only occupies large area of land in the storage and transportation process but also pollutes the environment and causes serious waste of resources if the fine ash is used in the industries of buildings, cement and the like.
Disclosure of Invention
In order to overcome the not enough of above-mentioned prior art, the utility model aims to provide a system is recycled to thin sediment of gasification, will transport the further burning of the outer fine sediment of arranging of thin sediment, calorific value make full use of to make the resource obtain further utilization, improve the utilization ratio of resource.
In order to realize the purpose, the utility model discloses a technical scheme is:
the utility model provides a system is recycled to gasification fine sediment, includes grey water treatment facilities 1, clarification tank 2 is connected to grey water treatment facilities 1 lower part black water output, 2 lower part liquid output of clarification tank connect filter feed pump 3, filter feed pump 3 liquid output connects fine sediment filter 4, 4 lotion exit linkage fine sediment storage tank 5 of fine sediment filter, 5 lower part exit linkage conveyor 6 of fine sediment storage tank, 6 exit linkage mills 8 of conveyor, 8 exit linkage mill export groove 9 of mill, 9 bottom coal thick liquid exits of mill export groove are connected low pressure coal slurry pump 10, coal thick liquid passes through low pressure coal slurry pump 10 and connects 11 upper portions of coal thick liquid groove, 11 lower part coal thick liquid exits of coal thick liquid groove connect's high pressure coal slurry pump 12, high pressure coal slurry pump 12 exit linkage gasifier 13.
The conveying device 6 is provided with a back washing device 7, and the conveying device 6 is connected with the upper part of the clarification tank 2 through the back washing device 7.
The mill outlet tank 9 and the coal slurry tank 11 are provided with stirring devices.
The utility model has the advantages that:
the content of fixed carbon in the gasified raw material coal is about 60 percent, the content of fixed carbon in the fine slag is about 30 percent, nearly 50 percent of effective components can be reused, and the use of the raw material coal can be effectively reduced.
Adopt the utility model discloses can carry, mix the system gas of burning to thin sediment, reduce raw and other materials expense, and the thin sediment that produces need not to send outward and bury, reduce the thin sediment treatment cost of gasification, realize solid waste recycling, avoid the polluted environment to realize enterprise's interests maximize.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Reference numerals: 1-ash water treatment device, 2-clarifying tank, 3-filter feeding pump, 4-fine slag filter, 5-fine slag storage tank, 6-conveying device, 7-back flushing device, 8-mill, 9-mill outlet tank, 10-low pressure coal slurry pump, 11-coal slurry tank, 12-high pressure coal slurry pump and 13-gasification furnace
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1: a gasification fine slag recycling system comprises an ash water treatment device 1, a clarifying tank 2 connected with a black water output end at the lower part of the ash water treatment device 1, a filter feeding pump 3 connected with a liquid output end at the lower part of the clarifying tank 2, a fine slag filter 4 connected with a liquid output end of the filter feeding pump 3, a fine slag storage tank 5 connected with a paste outlet of the fine slag filter 4, a conveying device 6 connected with a lower outlet of the fine slag storage tank 5, a mill 8 connected with an outlet of the conveying device 6, a mill outlet tank 9 connected with an outlet of the mill 8, a low-pressure coal slurry pump 10 connected with a coal slurry outlet at the bottom of the mill outlet tank 9, a coal slurry connected with the upper part of a coal slurry tank 11 through the low-pressure coal slurry pump 10, a high-pressure coal slurry pump 12 connected with a coal slurry outlet at the lower part of the coal slurry tank 11. The conveying device 6 is provided with a back washing device 7, and the conveying device 6 is connected with the upper part of the clarification tank 2 through the back washing device 7. In order to prevent the coal slurry from settling, the mill outlet tank 9 and the coal slurry tank 11 are provided with stirring devices.
The utility model discloses a theory of operation:
after black water containing a large amount of fine slag in the grey water treatment device 1 is precipitated in the clarifying tank 2, the fine slag precipitated from the bottom of the clarifying tank 2 is sent to a fine slag filter 4 through a filter feeding pump 3 and filtered into a fine slag filter cake with water content of about 60 percent, the fine slag filter cake is sent to a fine slag storage tank 5, and the filtered clear water is pumped back to the clarifying tank 2 for secondary precipitation. The fine slag in the fine slag storage tank 5 is sent into a mill 8 through a conveying device 6, and is mixed with water, an additive, a cosolvent, a pH regulator and raw material coal to prepare qualified coal water slurry.
The coal water slurry is sent into a gasification furnace 13 through a grinder outlet groove 9, a low-pressure coal slurry pump 10, a coal slurry groove 11 and a high-pressure coal slurry pump 12 to be fully combusted to generate coal gas. The conveying device 6 is provided with a back washing device 7 so as to avoid the blockage and hardening of the pipeline and the inside of the equipment during the overhaul and outage of the equipment. Filtered water, cleaning water and the like generated in the operation are sent to the clarifying tank 2 through a centrifugal pump for recycling, and the whole device has no discharge of three wastes.
Claims (3)
1. A gasification fine slag recycling system is characterized by comprising an ash water treatment device (1), wherein the black water output end at the lower part of the ash water treatment device (1) is connected with a clarifying tank (2), the liquid output end at the lower part of the clarifying tank (2) is connected with a filter feeding pump (3), the liquid output end of the filter feeding pump (3) is connected with a fine slag filter (4), the paste outlet of the fine slag filter (4) is connected with a fine slag storage tank (5), the lower outlet of the fine slag storage tank (5) is connected with a conveying device (6), the outlet of the conveying device (6) is connected with a mill (8), the outlet of the mill (8) is connected with a mill outlet tank (9), the coal slurry outlet at the bottom of the mill outlet tank (9) is connected with a low-pressure coal slurry pump (10), the coal slurry is connected with the upper part of a coal slurry tank (11) through the low-pressure coal slurry pump (, the outlet of the high-pressure coal slurry pump (12) is connected with a gasification furnace (13).
2. A system for recycling gasified fine slag according to claim 1, wherein the transport means (6) is provided with a back-washing means (7), and the transport means (6) is connected to the upper part of the clarifier tank (2) through the back-washing means (7).
3. A system for recycling gasified fine slag according to claim 1, wherein the mill outlet tank (9) and the coal slurry tank (11) are equipped with stirring means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022163388.0U CN213357476U (en) | 2020-09-28 | 2020-09-28 | Gasification fine slag recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022163388.0U CN213357476U (en) | 2020-09-28 | 2020-09-28 | Gasification fine slag recycling system |
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| Publication Number | Publication Date |
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| CN213357476U true CN213357476U (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022163388.0U Active CN213357476U (en) | 2020-09-28 | 2020-09-28 | Gasification fine slag recycling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113566230A (en) * | 2021-08-03 | 2021-10-29 | 西安热工研究院有限公司 | Method and system for realizing direct blending combustion and gasification of fine slag in pulverized coal fired boiler |
-
2020
- 2020-09-28 CN CN202022163388.0U patent/CN213357476U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113566230A (en) * | 2021-08-03 | 2021-10-29 | 西安热工研究院有限公司 | Method and system for realizing direct blending combustion and gasification of fine slag in pulverized coal fired boiler |
| CN113566230B (en) * | 2021-08-03 | 2023-08-22 | 西安热工研究院有限公司 | Method and system for realizing direct blending combustion gasification fine slag of pulverized coal boiler |
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