CN215785632U - Coal chemical industry gasification sediment draws, system of recycling - Google Patents
Coal chemical industry gasification sediment draws, system of recycling Download PDFInfo
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- CN215785632U CN215785632U CN202122064576.2U CN202122064576U CN215785632U CN 215785632 U CN215785632 U CN 215785632U CN 202122064576 U CN202122064576 U CN 202122064576U CN 215785632 U CN215785632 U CN 215785632U
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Abstract
The utility model aims to provide a system for extracting and recycling gasified slag in coal chemical industry, which aims to solve the problems that the gasified slag treatment process is complex, the recovery rate is low, the cost is high, the ideal utilization value cannot be achieved, and the comprehensive utilization efficiency of the gasified slag cannot be effectively improved. The system comprises a belt type feeding machine, a gasification slag stirring tank, a first vibrating screen, a fine material tank, a coarse material tank, a first sorting unit, a second vibrating screen, a second sorting unit, a third vibrating screen, a fourth vibrating screen, a first centrifugal dehydrator, a second centrifugal dehydrator, a first biomass dryer, a second biomass dryer and a baking-free brick production line; and (3) obtaining fixed carbon, high-heat-quality electric coal, high ash and tailings after sorting, conveying the high ash and the tailings into a baking-free brick machine production line for recycling, and directly selling the fixed carbon and the high-heat-quality electric coal.
Description
Technical Field
The utility model relates to a coal chemical industry gasified slag comprehensive utilization system, in particular to a coal chemical industry gasified slag extraction and recycling system.
Background
With the scale of resource exploitation, the wide increase of coal chemical enterprises, and the production flow generates a large amount of solid wastes including a large amount of gasified slag, which causes the dramatic increase of ecological and environmental pressures. In recent years, with the change of climate, environmental pollution is controlled globally, and how to treat a large amount of solid waste is also taken as a key project in China. At present, in the field of gasification slag treatment, most of vibrating screen dehydration technologies use a flotation column of a flotation machine, a foaming agent and kerosene for deashing and separation, the process is complex, the recovery rate is low, the cost is high, the ideal utilization value cannot be achieved, and the comprehensive utilization efficiency of gasification slag cannot be effectively improved.
Therefore, it becomes necessary to develop a comprehensive utilization approach of the coal chemical industry gasification slag with simple process and low cost and to develop comprehensive utilization of the coal chemical industry gasification slag.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a system for extracting and recycling gasified slag in coal chemical industry, which aims to solve the problems that the gasified slag treatment process is complex, the recovery rate is low, the cost is high, the ideal utilization value cannot be achieved, and the comprehensive utilization efficiency of the gasified slag cannot be effectively improved.
In order to achieve the purpose, the utility model adopts the technical scheme that:
a coal chemical industry gasification slag extraction and recycling system is characterized in that: the device comprises a belt type feeding machine 1, a gasified slag stirring tank 2, a first vibrating screen 3, a fine material tank 4, a coarse material tank 5, a first sorting unit 6, a second vibrating screen 7, a second sorting unit 8, a third sorting unit 9, a third vibrating screen 10, a fourth vibrating screen 11, a first centrifugal dehydrator 12, a second centrifugal dehydrator 13, a first biomass dryer 14, a second biomass dryer 15 and a baking-free brick production line 16;
the discharge port of the belt type feeding machine 1 is connected with the feed port of the gasified slag stirring tank 2, the discharge port of the gasified slag stirring tank 2 is connected with the feed port of the first vibrating screen 3, the fine screen discharge port of the first vibrating screen 3 is connected with the fine material tank 4, the coarse screen discharge port is connected with the coarse material tank 5, and the underflow port of the fine material tank 4 is connected with the feed port of the first sorting unit 6;
the tailing discharge port of the first sorting unit 6 is connected with the feed port of the second vibrating screen 7, and the tailing discharge port of the second vibrating screen 7 is connected with a baking-free brick production line 16; the rough concentrate discharge hole of the first separator set 6 is connected with the feed inlet of the second separator set 8; a high ash discharge port of the second sorting unit 8 is connected with a baking-free brick production line 16;
a rough concentrate discharge hole of the second separator set 8 is connected with a feed hole of a third separator set 9, a fixed carbon discharge hole of the third separator set 9 is connected with a feed hole of a third vibrating screen 10, and a high-heat-quality electric coal discharge hole of the third separator set 9 is connected with a feed hole of a fourth vibrating screen 11;
the discharge hole of the third vibrating screen 10 is connected with a first centrifugal dehydrator 12 and a first biomass dryer 14 in sequence; a discharge hole of the fourth vibrating screen 11 is sequentially connected with a second centrifugal dehydrator 13 and a second biomass dryer 15;
further, the first vibrating screen 3, the second vibrating screen 7, the third vibrating screen 10 and the fourth vibrating screen 11 are all high-frequency vibrating screens.
Further, the first separator set 6 is formed by connecting three separators in series; the second separator set 8 and the third separator set 9 are both two separators which are connected in series;
the first sorting machine set 6, the second sorting machine set 8 and the third sorting machine set 9 are all TPS interference bed sorting machines.
Compared with the prior art, the utility model has the beneficial effects that:
1. the production process flow displayed by the coal chemical gasification slag extraction and recycling system enables solid waste to be recycled, particularly gasification slag to be changed into valuable, the overall energy consumption of equipment is effectively reduced, the production process flow is improved, the accurate recovery rate is high, the maximum energy utilization rate can be effectively promoted, water and energy are saved, emission is reduced, and better environmental pollution treatment is facilitated.
2. The technological process shown by the system can ensure that the comprehensive extraction utilization rate of the existing gasified slag in the coal chemical industry reaches more than 95 percent and is far higher than the comprehensive utilization rate of about 50 percent in the same industry. The comprehensive utilization rate of the components is that the extraction rate of the fixed carbon can reach about 50%, the extraction rate of the high-heat-quality electric coal can reach more than 25%, and about 20% of the rest tailings can be completely used as the raw materials of the baking-free bricks.
Drawings
FIG. 1 is a schematic view of a system for extracting and recycling gasified slag in coal chemical industry according to the present invention;
FIG. 2 is a flow chart of the extraction and recycling of gasified slag in coal chemical industry according to the present invention;
reference numerals:
1-belt type feeding machine, 2-gasified slag stirring tank, 3-first vibrating screen, 4-fine material tank, 5-coarse material tank, 6-first sorting unit, 7-second vibrating screen, 8-second sorting unit, 9-third sorting unit, 10-third vibrating screen, 11-fourth vibrating screen, 12-first centrifugal dehydrator, 13-second centrifugal dehydrator, 14-first biomass dryer, 15-second biomass dryer and 16-baking-free brick production line.
Detailed Description
In order to make the objects, advantages and features of the present invention more clear, the following detailed description of a system for extracting and recycling gasified residue in coal chemical industry proposed by the present invention is made with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
A coal chemical gasification slag extraction and recycling system comprises a belt feeder 1, a gasification slag stirring tank 2, a first vibrating screen 3, a fine material tank 4, a coarse material tank 5, a first sorting unit 6, a second vibrating screen 7, a second sorting unit 8, a third sorting unit 9, a third vibrating screen 10, a fourth vibrating screen 11, a first centrifugal dehydrator 12, a second centrifugal dehydrator 13, a first biomass dryer 14, a second biomass dryer 15 and a baking-free brick production line 16;
the first vibrating screen 3, the second vibrating screen 7, the third vibrating screen 10 and the fourth vibrating screen 11 are all high-frequency vibrating screens; the first sorting unit 6 is formed by connecting three sorting machines in series, the second sorting unit 8 and the third sorting unit 9 are formed by connecting two sorting machines in series, and the first sorting unit 6, the second sorting unit 8 and the third sorting unit 9 are formed by connecting TPS (thermoplastic polystyrene) interference bed sorting machines.
The discharge hole of the belt type feeding machine 1 is connected with the feed inlet of the gasification slag stirring pool 2, the gasification slag solid and water respectively enter the gasification slag stirring pool 2 through the raw material inlet and the water source inlet of the gasification slag stirring pool 2, and the stirrer in the gasification slag stirring pool 2 is used for size mixing, so that the gasification slag is fully dispersed.
The discharge port of the gasification slag stirring tank 2 is connected with the feed port of the first vibrating screen 3, the discharge port of the fine screen of the first vibrating screen 3 is connected with the fine material tank 4, and the discharge port of the coarse screen is connected with the coarse material tank 5. Conveying the gasified slag slurry to a high-frequency first vibrating screen 3, separating coarse ores and fine ores of the materials under the action of vibration, and continuously sorting and recycling the obtained fine ores in the next step.
A bottom flow port of the fine material pool 4 is connected with a feed port of the first sorting unit 6, fine ores are conveyed to the first sorting unit 6 for primary three-group sorting, and the obtained coarse tailings enter a baking-free brick production line 16 to be reused to obtain baking-free bricks or are sold as coarse high-ash products; and carrying out next step on the obtained rough concentrate for further separation and reuse.
The tailing discharge port of the first sorting unit 6 is connected with the feed port of the second vibrating screen 7, and the tailing discharge port of the second vibrating screen 7 is connected with a baking-free brick production line 16; the rough concentrate discharge port of the first separator set 6 is connected with the feed port of the second separator set 8, and the high ash discharge port of the second separator set 8 is connected with the baking-free brick production line 16. Conveying the obtained rough concentrate to a second sorting unit 8 for secondary two-group sorting, and enabling the obtained high ash to enter a baking-free brick production line 16 for recycling to obtain a baking-free brick or selling as a high ash product; and carrying out next step on the obtained concentrate for further sorting and recycling.
And a rough concentrate discharge hole of the second separator set 8 is connected with a feed inlet of the third separator set 9, and the obtained concentrate is conveyed to the third separator set 9 for three times of two-group separation to obtain fixed carbon and high-heat-quality electric coal.
A fixed carbon discharge port of the third separator set 9 is connected with a feed port of a third vibrating screen 10, and a high-heat-quality electric coal discharge port of the third separator set 9 is connected with a feed port of a fourth vibrating screen 11; the discharge port of the third vibrating screen 10 is connected with a first centrifugal dehydrator 12 and a first biomass dryer 14 in sequence; a discharge hole of the fourth vibrating screen 11 is sequentially connected with a second centrifugal dehydrator 13 and a second biomass dryer 15.
The fixed carbon sequentially enters a third vibrating screen machine, a first centrifugal dehydrator and a first biomass dryer, and is dehydrated and dried to obtain a fixed carbon product, and the fixed carbon product is recycled or directly sold; and the fourth vibrating screen, the second centrifugal dehydrator and the second biomass dryer of the high-heat-quality electric coal are used for dehydrating and drying to obtain a high-heat-quality electric coal product, and the high-heat-quality electric coal product is recycled or directly sold.
The specific process steps of the extraction and recycling system for the coal chemical gasification slag are as follows:
And 2, conveying the gasified slag slurry to a high-frequency vibrating screen, separating coarse ores and fine ores of the materials under the action of vibration, and continuously sorting the obtained fine ores for recycling in the next step.
Step 3, conveying the fine ores obtained in the step 2 to a first TPS interference bed sorting machine unit for primary three-group sorting, and enabling the obtained tailings to enter a baking-free brick production line for recycling to obtain baking-free bricks or selling the baking-free bricks as coarse-grained high-ash products; and carrying out next step on the obtained rough concentrate for further separation and reuse.
The materials uniformly enter a gasification slag stirring pool from a feeder, are washed, wet and stirred and then enter a high-frequency vibrating screen for separation, coarse slag on the screen is sent to a baking-free brick machine production line, enters TPS (thermoplastic polystyrene) washing equipment below the screen, is separated according to density by utilizing interference sedimentation, does not need a medium, forms turbulent flow by water flow sprayed by hundreds of high-pressure spray nozzles at the bottom, and realizes interference sedimentation with gasification slag particles.
Separating the tailings into three products (fixed carbon, high-heat quality electric coal and tailings), dewatering the tailings in a high-frequency vibrating screen, and conveying the tailings into a baking-free brick machine production line, a proportioning machine, a feeding machine, a stirring machine, a belt conveyor, a brick press, a brick blank, curing, finished products and leaving the factory after dewatering.
And (3) selecting concentrate by using three groups of TPS interference bed separators at the first time, feeding the concentrate into two groups of TPS interference bed separators at the second time to separate ash, feeding the concentrate into two groups of TPS interference bed separators at the third time after ash is removed, separating fixed carbon and high-heat-quality electric coal, separating the fixed carbon, dehydrating by using a high-frequency vibrating screen, and performing secondary dehydration on the fixed carbon by using a high-frequency centrifuge after dehydration.
After dehydration, the biomass particles are dried by a biomass particle dryer, and the fixed carbon and the high-heat-quality electric coal are dried by a heat source, a scattering device, a belt type feeding machine, a recycling rotary drum, a belt type discharging machine, an induced draft fan, a dust remover, a discharger and a power distribution cabinet and are sold in standard moisture.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (3)
1. The utility model provides a coal industry gasification sediment draws, recycles system which characterized in that: the device comprises a belt type feeding machine (1), a gasified slag stirring tank (2), a first vibrating screen (3), a fine material tank (4), a coarse material tank (5), a first sorting unit (6), a second vibrating screen (7), a second sorting unit (8), a third sorting unit (9), a third vibrating screen (10), a fourth vibrating screen (11), a first centrifugal dehydrator (12), a second centrifugal dehydrator (13), a first biomass dryer (14), a second biomass dryer (15) and a baking-free brick production line (16);
a discharge port of the belt type feeding machine (1) is connected with a feed port of the gasification slag stirring tank (2), a discharge port of the gasification slag stirring tank (2) is connected with a feed port of a first vibrating screen (3), a fine screen discharge port of the first vibrating screen (3) is connected with a fine material tank (4), a coarse screen discharge port is connected with a coarse material tank (5), and a underflow port of the fine material tank (4) is connected with a feed port of a first sorting unit (6);
the tailing discharge hole of the first sorting unit (6) is connected with the feed hole of the second vibrating screen (7), and the tailing discharge hole of the second vibrating screen (7) is connected with a baking-free brick production line (16); the rough concentrate discharge hole of the first separator set (6) is connected with the feed inlet of the second separator set (8); a high ash discharge port of the second sorting unit (8) is connected with a baking-free brick production line (16);
a rough concentrate discharge hole of the second separator set (8) is connected with a feed hole of a third separator set (9), a fixed carbon discharge hole of the third separator set (9) is connected with a feed hole of a third vibrating screen (10), and a high-heat-quality electric coal discharge hole of the third separator set (9) is connected with a feed hole of a fourth vibrating screen (11);
the discharge hole of the third vibrating screen (10) is sequentially connected with a first centrifugal dehydrator (12) and a first biomass dryer (14); a discharge hole of the fourth vibrating screen (11) is sequentially connected with a second centrifugal dehydrator (13) and a second biomass dryer (15);
and a tailing discharge port of the second vibrating screen (7) and a high-ash discharge port of the second sorting unit (8) are connected with a baking-free brick production line (16).
2. The coal chemical gasification slag extraction and reuse system according to claim 1, characterized in that:
the first vibrating screen (3), the second vibrating screen (7), the third vibrating screen (10) and the fourth vibrating screen (11) are all high-frequency vibrating screens.
3. The coal chemical gasification slag extraction and reuse system according to claim 2, characterized in that:
the first sorting machine set (6) is formed by connecting three sorting machines in series; the second separator set (8) and the third separator set (9) are both formed by connecting two separators in series;
the first sorting machine set (6), the second sorting machine set (8) and the third sorting machine set (9) are all TPS interference bed sorting machines.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114849895A (en) * | 2022-05-06 | 2022-08-05 | 西安交通大学 | Coal gasification slag self-drying and quality-separating utilization system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114849895A (en) * | 2022-05-06 | 2022-08-05 | 西安交通大学 | Coal gasification slag self-drying and quality-separating utilization system and method |
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