CN216125439U - Desulfurization slurry waste heat recovery device - Google Patents
Desulfurization slurry waste heat recovery device Download PDFInfo
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- CN216125439U CN216125439U CN202121845467.8U CN202121845467U CN216125439U CN 216125439 U CN216125439 U CN 216125439U CN 202121845467 U CN202121845467 U CN 202121845467U CN 216125439 U CN216125439 U CN 216125439U
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Abstract
The utility model discloses a desulfurization slurry waste heat recovery device, which consists of a boiler, a sulfur spraying tower, a spraying device and a liquid-gas separation device; the boiler is connected with the sulfur spraying tower through a slurry outlet valve, the upper end of the sulfur spraying tower is provided with a spraying device, and the spraying device is respectively connected with a water outlet valve of the desulfurizing tower in the sulfur spraying tower and a water storage tank in the liquid-gas separation device through a water pump; the spraying device comprises a water pump, a check valve, a storage device, a water level alarm and a compressor, wherein one end of the water pump is connected with a water outlet valve of the desulfurizing tower of the water storage device through a pipeline, the other end of the water pump is connected with one end of the storage device through a water outlet valve of the water pump, and the other end of the storage device is connected with the compressor; one end of the compressor is connected with the storage device through a compression inlet end, and the other end of the compressor is connected with the spraying device through a compression outlet end; on one hand, the utility model carries out gas-liquid separation treatment on the slurry, and is beneficial to maximizing the recovery of the slurry; and on the other hand, the slurry wastewater is timely treated and collected, so that the later-stage utilization is facilitated.
Description
Technical Field
The utility model relates to the technical field of energy conservation and environmental protection, in particular to a desulfurization slurry waste heat recovery device.
Background
The wet desulphurization technology comprises the following steps: the limestone slurry in the desulfurizing tower is contacted and mixed with the flue gas entering the desulfurizing tower, sulfur dioxide in the flue gas, calcium carbonate in the slurry in the desulfurizing tower and oxygen are subjected to oxidation reaction to generate calcium sulfate dihydrate (gypsum), and the desulfurized flue gas enters a chimney and is discharged. However, wet desulfurization loses a large amount of heat during flue gas discharge, and the amount of heat lost is about 10% of the heat supply of a boiler.
In order to reduce the heat lost by the boiler flue gas, in the prior art, the temperature of the slurry is usually reduced in the desulfurization tower, so that the slurry exchanges heat with the high-temperature flue gas, and the waste heat of the flue gas is recovered. The method specifically comprises the following steps: the slurry flows at one side of the heat transfer surface of the dividing wall type heat exchanger for cooling, the external circulating water flows at the other side for cooling the slurry, and then the circulating water is subjected to waste heat recovery. The technical disadvantage is mainly in two aspects: firstly, the slurry contains more solids (such as calcium sulfate), so that scaling is easy to occur on the heat exchange surface, which causes blockage and reduces the heat exchange efficiency. And secondly, the cooled slurry recovers the waste heat of the flue gas, can condense the water vapor in the flue gas, increases the water amount in the desulfurizing tower and influences the water balance.
A boiler slurry waste heat recovery system having application number CN201910301291.0, comprising: a desulfurizing tower, a flash evaporator and a heat pump; a sprayer is arranged in the flash evaporator; the desulfurizing tower is respectively communicated with the spray thrower and the evaporation chambers in the flash evaporator to form a slurry circulation loop; and a steam outlet of the flash evaporator is communicated with the heat pump, and steam flowing out of the steam outlet exchanges heat with refrigerant in the heat pump so as to condense the steam to form condensed water. According to the boiler slurry waste heat recovery system provided by the embodiment of the utility model, on one hand, slurry in the desulfurizing tower is subjected to flash evaporation, and the flash evaporated slurry is transmitted back to the desulfurizing tower, so that the waste heat of the slurry can be obtained; on the other hand, the steam obtained by flash evaporation directly recovers the steam waste heat through the heat pump, so that the utilization efficiency of the slurry waste heat is improved, and the cost of the heat pump is reduced.
However, when the boiler slurry waste heat recovery system recovers the slurry waste heat, on one hand, the gas-liquid separation treatment is not carried out on the slurry, and the maximization of the slurry recovery is not facilitated; on the other hand, the wastewater of the slurry is not timely treated and collected and is not utilized in the later period.
SUMMERY OF THE UTILITY MODEL
Based on the technical problems in the prior art, the desulfurization slurry waste heat recovery device provided by the utility model comprises a boiler, a sulfur spraying tower, a spraying device and a liquid-gas separation device; the boiler is connected with the sulfur spraying tower through a slurry outlet valve, a spraying device is installed at the upper end of the sulfur spraying tower, and the spraying device is respectively connected with a water outlet valve of the desulfurizing tower in the sulfur spraying tower and a water storage tank in the liquid-gas separation device through a water pump.
Furthermore, the spraying device comprises a water pump, a check valve, a storage device, a water level alarm and a compressor, wherein one end of the water pump is connected with a water outlet valve of the desulfurizing tower of the water storage device through a pipeline, the other end of the water pump is connected with one end of the storage device through a water outlet valve of the water pump, and the other end of the storage device is connected with the compressor; one end of the compressor is connected with the storage device through a compression inlet end, and the other end of the compressor is connected with the spraying device through a compression outlet end.
Further, the liquid-gas separation device comprises an automatic drainage device, a drying device, a pipe head, a filter, a ball valve and a water storage tank; the left end of the liquid-gas separation device is provided with a first air inlet valve and a second air inlet valve, the first air inlet valve is connected with a boiler air outlet valve of a boiler through an air pipe, and the second air inlet valve is connected with a sulfur spraying tower air outlet valve of a sulfur spraying tower through an air pipe; and the gas of the liquid-gas separation device is delivered to the check valve from the liquid-gas output pipe, and then delivered to the drying device by the check valve, the drying device is connected with the gas outlet pipe, and the front end of the gas outlet pipe is provided with a pipe head for discharging.
Further, a filter is installed at the bottom of the liquid-gas separation device and connected with the water storage tank through an automatic drainage device, and a ball valve is arranged between the automatic drainage device and the water storage tank.
Furthermore, a check valve is arranged between the water pump and the storage device, the check valve is connected with the storage device through a water inlet valve of the storage device, and a spray head is installed on the spray device.
Furthermore, the outer end of the boiler is provided with a protective shell, the upper end of the boiler is provided with a gasification chamber, the left end of the gasification chamber is provided with a feed port and an air inlet, the lower end of the gasification chamber is provided with a combustion chamber, and the blower is arranged at the lower end of the combustion chamber.
Furthermore, a spraying area is arranged in the sulfur spraying tower, a spraying device is arranged at the upper end of the spraying area, filtering equipment is arranged at the lower end of the spraying area, and a water outlet valve of the desulfurizing tower is arranged at the lower end of the filtering equipment.
The desulfurization slurry waste heat recovery device provided by the utility model has the advantages that:
1. according to the desulfurization slurry waste heat recovery device provided by the structure of the utility model, the sulfur spraying tower and the spraying device are combined with each other, so that sulfides in the desulfurization slurry can be effectively neutralized, and in addition, the sulfides are further separated by the filtering equipment and the gas-liquid separation device.
2. The desulfurization slurry waste heat recovery device provided by the structure of the utility model can effectively perform gas-liquid separation treatment, and liberate labor force of manual drainage; the water vapor and impurities in the slurry are optimized by adopting multi-layer filtration; the combination of the water drainage device and the filtering device optimizes the waste water and protects the ecological environment.
Drawings
FIG. 1 is a diagram of a boiler and a sulfur spray tower of a desulfurization slurry waste heat recovery device provided by the utility model;
FIG. 2 is a diagram of a spraying device and a liquid-gas separation device of a desulfurization slurry waste heat recovery device provided by the utility model;
FIG. 3 is a diagram of a spraying device of the desulfurization slurry waste heat recovery device provided by the utility model;
FIG. 4 is a diagram of a liquid-gas separation device of a desulfurization slurry waste heat recovery device according to the present invention.
In the figure, 100, a boiler, 101, an air inlet, 102, a feeding port, 103, a gasification chamber, 104, a protective shell, 105, a combustion chamber, 106, a blower, 107, a boiler gas outlet valve, 108, a slurry outlet valve, 200, a sulfur spraying tower, 201, a spraying area, 202, a filtering device, 203, a desulfurization tower water outlet valve, 205, a sulfur spraying tower gas outlet valve, 300, a spraying device, 301, a water pump, 302, a water pump water outlet valve, 303, a check valve, 304, a storage device, 305, a storage device water inlet valve, 306, a water level alarm, 307, a compression inlet end, 308, a compressor, 309, a compression outlet end, 310, a spray header, 311, a pipeline, 400, a liquid-gas separation device, 401, a first air inlet valve, 401-1, a second air inlet valve, 402, an automatic drainage device, 403, a drying device, 404, an air outlet pipe, 405, a pipe head, 406, a filter, 407, a ball valve, 408. a water storage pool is arranged in the water storage pool,
Detailed Description
Referring to fig. 1 and 2, the desulfurization slurry waste heat recovery device provided by the utility model comprises a boiler 100, a sulfur spraying tower 200, a spraying device 300 and a liquid-gas separation device 400; the boiler 100 is connected with the sulfur spraying tower 200 through a slurry outlet valve 108, the upper end of the sulfur spraying tower 200 is provided with a spraying device 300, and the spraying device 300 is respectively connected with a desulfurizing tower water outlet valve 203 in the sulfur spraying tower 200 and a water storage tank 408 in the liquid-gas separation device 400 through a water pump 301.
Referring to fig. 2 and 3, the spraying device 300 includes a water pump 301, a check valve 303, a storage device 304, a water level alarm 306 and a compressor 308, wherein one end of the water pump 301 is connected with a water outlet valve 203 of the desulfurizing tower of the water storage device through a pipeline 311, the other end of the water pump 301 is connected with one end of the storage device 304 through a water outlet valve 302 of the water pump, and the other end of the storage device 304 is connected with the compressor 308; one end of the compressor 308 is connected to the storage device 304 through a compression inlet end 307, and the other end of the compressor 308 is connected to the spraying device 300 through a compression outlet end 309.
Referring to fig. 2 and 4, the liquid-gas separation device 400 includes an automatic water draining device 402, a drying device 403, a pipe head 405, a filter 406, a ball valve 407, and a water storage tank 408; the left end of the liquid-gas separation device 400 is provided with a first gas inlet valve 401 and a second gas inlet valve 401-1, the first gas inlet valve 401 is connected with a boiler gas outlet valve 107 of the boiler 100 through a gas pipe, and the second gas inlet valve 401-1 is connected with a sulfur spraying tower gas outlet valve 205 of the sulfur spraying tower 200 through a gas pipe; the gas in the liquid-gas separation device 400 is sent to the check valve 303 from the liquid-gas output pipe, then the gas is sent to the drying device 403 by the check valve 303, the drying device 403 is connected with the gas outlet pipe 404, and the front end of the gas outlet pipe 404 is provided with a pipe head 405 for discharging.
Referring to fig. 3, a filter 406 is installed at the bottom of the liquid-gas separation device 400, the filter 406 is connected with a water storage tank 408 through an automatic water drainage device 402, and a ball valve 407 is arranged between the automatic water drainage device 402 and the water storage tank 408.
A check valve 303 is arranged between the water pump 301 and the storage device 304, the check valve 303 is connected with the storage device 304 through a storage device water inlet valve 305, and a spray head 310 is arranged on the spray device 300.
The outer end of the boiler 100 is provided with a protective shell 104, the upper end of the boiler 100 is provided with a gasification chamber 103, the left end of the gasification chamber 103 is provided with a feeding port 102 and an air inlet 101, the lower end of the gasification chamber 103 is provided with a combustion chamber 105, and a blower 106 is arranged at the lower end of the combustion chamber 105.
The sulfur spraying tower 200 is internally provided with a spraying area 201, the upper end of the spraying area 201 is provided with a spraying device 300, the lower end of the spraying area 201 is provided with a filtering device 202, and the lower end of the filtering device 202 is provided with a water outlet valve 203 of the desulfurizing tower.
When the desulfurization slurry waste heat recovery device works, firstly, slurry in a boiler 100 enters a sulfur spraying tower 200 from a slurry outlet valve 108, a spraying device 300 in the sulfur spraying tower 200 performs spraying treatment, limestone is added into water in a storage device 304, so that sulfides in the slurry can be neutralized, the neutralized water enters a filtering device 202 for filtering, the filtered water enters a water pump 301 from a desulfurization tower outlet valve 203, water vapor generated during combustion of the boiler 100 and water vapor generated during desulfurization of the sulfur spraying tower 200 are respectively connected to a liquid-gas separation device 400 through a first air inlet valve 401 and a second air inlet valve 401-1, the liquid-gas separation device 400 performs gas-liquid separation, the liquid-gas separation device 400 performs re-separation to enable gas to be sent into a drying device 403 from a check valve 304, the drying device 403 is connected with an air outlet pipe 404, a pipe head 405 is arranged at the front end of the air outlet pipe 404, and the gas is discharged from the pipe head 405 through the air outlet pipe 404; the liquid in the liquid-gas separator 400 is discharged from the bottom of the liquid-gas separator 400 to the filter 305, and the filtered liquid passes through the filter 406 to the automatic drainage device 402 and is sent to the water storage 408 through the ball valves 407. The water in the water pump 301 is pumped into the storage device 304, and is prevented from flowing back by the check valve 303 in the middle, and the water in the storage device 304 is compressed by the compressor 308, and then the compressed water is sent to each branch pipe by the compression outlet 309, and is sprayed into the sulfur spray tower 200 by the shower head 310.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention by equivalent replacement or change according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (7)
1. A desulfurization slurry waste heat recovery device comprises a boiler (100), a sulfur spraying tower (200), a spraying device (300) and a liquid-gas separation device (400); the method is characterized in that the boiler (100) is connected with a sulfur spraying tower (200) through a slurry outlet valve (108), a spraying device (300) is installed at the upper end of the sulfur spraying tower (200), and the spraying device (300) is respectively connected with a water outlet valve (203) of a desulfurizing tower in the sulfur spraying tower (200) and a water storage tank (408) in a liquid-gas separation device (400) through a water pump (301).
2. The desulfurization slurry waste heat recovery device according to claim 1, wherein the spraying device (300) comprises a water pump (301), a check valve (303), a storage device (304), a water level alarm (306) and a compressor (308), one end of the water pump (301) is connected with a desulfurization tower water outlet valve (203) of the water storage device through a pipeline (311), the other end of the water pump (301) is connected with one end of the storage device (304) through a water pump water outlet valve (302), and the other end of the storage device (304) is connected with the compressor (308); one end of the compressor (308) is connected with the storage device (304) through a compression inlet end (307), and the other end of the compressor (308) is connected with the spraying device (300) through a compression outlet end (309).
3. The desulfurization slurry waste heat recovery device according to claim 1, wherein the liquid-gas separation device (400) comprises an automatic water draining device (402), a drying device (403), a pipe head (405), a filter (406), a ball valve (407) and a water storage tank (408); the left end of the liquid-gas separation device (400) is provided with a first gas inlet valve (401) and a second gas inlet valve (401-1), the first gas inlet valve (401) is connected with a boiler gas outlet valve (107) of a boiler (100) through a gas pipe, and the second gas inlet valve (401-1) is connected with a sulfur spraying tower gas outlet valve (205) of a sulfur spraying tower (200) through a gas pipe; and the gas in the liquid-gas separation device (400) is delivered to the check valve (303) from the liquid-gas output pipe, the gas is delivered to the drying device (403) through the check valve (303), the drying device (403) is connected with the gas outlet pipe (404), and the front end of the gas outlet pipe (404) is provided with a pipe head (405) for discharging.
4. The desulfurization slurry waste heat recovery device according to claim 3, characterized in that a filter (406) is installed at the bottom of the liquid-gas separation device (400), the filter (406) is connected with the water storage tank (408) through an automatic drainage device (402), and a ball valve (407) is arranged between the automatic drainage device (402) and the water storage tank (408).
5. The desulfurization slurry waste heat recovery device according to claim 3, characterized in that a check valve (303) is arranged between the water pump (301) and the storage device (304), the check valve (303) is connected with the storage device (304) through a storage device water inlet valve (305), and a spray head (310) is arranged on the spray device (300).
6. The desulfurization slurry waste heat recovery device according to claim 1, characterized in that the outer end of the boiler (100) is provided with a protective shell (104), the upper end of the boiler (100) is provided with a gasification chamber (103), the left end of the gasification chamber (103) is provided with a feeding port (102) and an air inlet (101), the lower end of the gasification chamber (103) is provided with a combustion chamber (105), and the blower (106) is arranged at the lower end of the combustion chamber (105).
7. The desulfurization slurry waste heat recovery device according to claim 1, wherein a spraying region (201) is arranged inside the sulfur spraying tower (200), the spraying device (300) is arranged at the upper end of the spraying region (201), the filtering equipment (202) is arranged at the lower end of the spraying region (201), and a desulfurization tower water outlet valve (203) is arranged at the lower end of the filtering equipment (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121845467.8U CN216125439U (en) | 2021-08-09 | 2021-08-09 | Desulfurization slurry waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121845467.8U CN216125439U (en) | 2021-08-09 | 2021-08-09 | Desulfurization slurry waste heat recovery device |
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| Publication Number | Publication Date |
|---|---|
| CN216125439U true CN216125439U (en) | 2022-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121845467.8U Active CN216125439U (en) | 2021-08-09 | 2021-08-09 | Desulfurization slurry waste heat recovery device |
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| CN (1) | CN216125439U (en) |
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2021
- 2021-08-09 CN CN202121845467.8U patent/CN216125439U/en active Active
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