CN210302634U - Desulfurized gypsum slurry moisture collecting system - Google Patents
Desulfurized gypsum slurry moisture collecting system Download PDFInfo
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- CN210302634U CN210302634U CN201920658140.6U CN201920658140U CN210302634U CN 210302634 U CN210302634 U CN 210302634U CN 201920658140 U CN201920658140 U CN 201920658140U CN 210302634 U CN210302634 U CN 210302634U
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Abstract
The utility model provides a pair of desulfurization gypsum thick liquid moisture collecting system, including rose box, vacuum apparatus and clean water tank, the rose box includes box and stirring washing unit, and thick liquid entry and sparge water entry have been seted up at the top of box, and the underflow opening has been seted up to its bottom, has seted up the overflow mouth on its lateral wall, and underflow opening and overflow opening all communicate with dense thick liquid eduction gear through pipeline, and the bottom is real empty room in the box, and real empty room top is equipped with the filter cloth tray, and the filter cloth tray upper berth is equipped with the filter cloth. The stirring and flushing device comprises a driving motor, a stirring rod and a stirring paddle, the top of the stirring rod penetrates through the top of the box body, the stirring paddle is connected to the bottom of the stirring rod, and atomizing nozzles are arranged at intervals at the bottom of the stirring paddle. The vacuum device is communicated with the vacuum chamber through a pipeline. The clean water tank is communicated with the vacuum device through a pipeline. The clean water can be used as functional water for the desulfurization system, so that the water balance of the desulfurization system is maintained.
Description
Technical Field
The utility model relates to a flue gas desulfurization technical field specifically is a desulfurization gypsum thick liquid moisture collection system.
Background
The maintenance of the water balance of the desulfurization system is related to the normal operation of desulfurization, so the liquid level of the absorption tower is an important detection index for the operation of the desulfurization system. In practical engineering application, boiler low-load and smoke plume treatment projects lead to reduction of flue gas evaporation capacity of a desulfurization system, and reduced water is retained in an absorption tower, so that the liquid level of the absorption tower continuously rises. And partial functional water of the desulfurization system cannot be reduced (such as machine seal water, vacuum pump seal water, belt seal water, filter cake washing water, pulping water and the like), and measures can be taken to only reduce the washing water quantity and the washing frequency of the demister, so that hidden danger is caused to the operation safety of the demister.
Therefore, the method has important significance for carrying out solid-liquid separation on the slurry in the desulfurization system, taking out the water in the slurry, using the water as the water for the desulfurization system to replace part of process water and enabling the water balance of the desulfurization system to reach a stable operation state.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a desulfurized gypsum thick liquid moisture collecting system to solve boiler low-load and plume and administer the reduction that the engineering leads to desulfurization system flue gas evaporation capacity, the moisture of reduction is preserved in the absorption tower, leads to absorption tower liquid level to last rising, and reduces the washing water yield and the frequency of washing of defroster, has caused the technical problem of hidden danger to the operation safety of defroster.
In order to solve the technical problem, the utility model provides a desulfurization gypsum thick liquid moisture collecting system, including rose box, vacuum apparatus and clean water tank, the rose box includes:
the top of the box body is provided with a slurry inlet and a flushing water inlet, the bottom of the box body is provided with a bottom flow port, the side wall of the box body is provided with an overflow port, the bottom flow port and the overflow port are both communicated with a thick slurry discharge device through pipelines, the bottom in the box body is a vacuum chamber, a filter cloth tray is arranged above the vacuum chamber, and filter cloth is laid on the filter cloth tray;
the stirring and flushing device comprises a driving motor, a stirring rod and a stirring paddle, wherein the top of the stirring rod penetrates through the top of the box body, the stirring paddle is connected to the bottom of the stirring rod, and atomizing nozzles are arranged at the bottom of the stirring paddle at intervals;
the vacuum device is communicated with the vacuum chamber through a pipeline;
the clean water tank is communicated with the vacuum device through a pipeline.
Preferably, one end of the stirring paddle is vertically provided with a scraper.
Preferably, a coupling device is provided on a pipe communicating with the washing water inlet.
Preferably, a pressure regulator is further arranged on the pipeline communicated with the flushing water inlet.
Preferably, the vacuum device comprises a steam-water separator and a water ring vacuum pump, the steam-water separator is respectively communicated with the vacuum chamber and the clean water tank through pipelines, and the water ring vacuum pump is respectively communicated with the steam-water separator and the clean water tank through pipelines.
Preferably, a negative pressure adjusting device is arranged on the steam-water separator.
Preferably, the filter cloth tray and the filter cloth are provided with holes, and the holes of the filter cloth are smaller than 40 um.
Compared with the prior art, the utility model discloses a characteristics and beneficial effect do:
the utility model discloses a desulfurization gypsum thick liquid moisture collection system includes rose box, vacuum apparatus and clean water tank triplex, and after the thick liquid got into the rose box, under vacuum condition, more concentrated thick liquid was discharged by the underflow opening to discharge from thick liquid eduction gear. The water in the slurry is pumped into the steam-water separator by the vacuum chamber and then introduced into the clean water tank, the solid content of the finally obtained clean water is not more than 1 percent, and the clean water can be used as functional water of a desulfurization system, such as demister washing water, pulping water and the like, so that the purposes of saving water and maintaining the water balance of the desulfurization system can be achieved. Can effectually avoid the defroster to wash the number of times not enough and arouse the hidden danger that the defroster differential pressure is big or the defroster collapses, can not cause the influence to other systems of desulfurization, can work under any operating mode.
Drawings
FIG. 1 is a schematic view showing the construction of a system for collecting moisture in desulfurized gypsum slurry.
Fig. 2 is a schematic structural view of a filter box portion.
The attached drawings are marked as follows: 1-filter box, 11-box body, 111-underflow port, 112-overflow port, 113-vacuum chamber, 114-filter cloth tray, 115-filter cloth, 116-slurry inlet, 117-flushing water inlet, 118-concentrated slurry discharge device, 12-stirring flushing device, 121-stirring rod, 122-stirring paddle, 123-atomizing nozzle, 124-scraper, 125-driving motor, 2-vacuum device, 21-steam-water separator, 22-water ring vacuum pump, 3-clear water tank, 4-coupling device, 5-pressure regulator and 6-negative pressure regulating device.
Detailed Description
In order to make the technical means, innovative features, objectives and functions realized by the present invention easy to understand, the present invention will be further described below.
The embodiments described herein are specific embodiments of the present invention, and are intended to be illustrative of the concepts of the present invention, which are intended to be illustrative and exemplary, and should not be construed as limiting the scope of the embodiments of the present invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.
As shown in fig. 1-2, the desulfurization gypsum slurry moisture collecting system comprises a filter box 1, a vacuum device 2 and a clean water tank 3, wherein the filter box 1 comprises a box body 11 and a stirring and washing device 12, a slurry inlet 116 and a washing water inlet 117 are formed in the top of the box body 11, an underflow opening 111 is formed in the bottom of the box body 11, and an overflow opening 112 is formed in the side wall of the box body. The box 11 is a cylindrical box, and the tank is anticorrosive and can be a stainless steel tank. The washing water is process water or clear water prepared by the system. The pipeline communicated with the flushing water inlet 117 is provided with a coupling device 4, and the coupling device 4 is a shaft sleeve device and can realize the coupling of a fixed pipeline and a rotary pipeline. A pressure regulator 5 is also arranged on a pipeline communicated with the washing water inlet 117, and the pressure regulator 5 is a manual regulating valve, an electric regulating valve or a pneumatic regulating valve. The pressure regulator 5 regulates the water pressure to be greater than 0.1 MPa. The underflow port 111 and the overflow port 112 are both communicated with the thick slurry discharge device 118 through a pipeline. The thick matter discharging device 118 may be a slurry self-flowing pipe or a thick matter pump. The thick liquid pump adds the governing gate for inverter pump or power frequency pump. The thick slurry discharged by the thick slurry discharging device 118 accounts for 70-85% of the slurry amount entering the slurry inlet 116.
The bottom in the box body 11 is a vacuum chamber 113, a filter cloth tray 114 is arranged above the vacuum chamber 113, and filter cloth 115 is paved on the filter cloth tray 114. Holes are formed in the filter cloth tray 114 and the filter cloth 115, and the pores of the filter cloth 115 are smaller than 40 um.
The agitation and flushing device 12 includes a drive motor 125, an agitator shaft 121, and an agitator paddle 122. The stirring rod 121 is supported by a stainless steel hollow material. The top of the stirring rod 121 penetrates through the top of the box body 11, the stirring paddle 122 is connected to the bottom of the stirring rod 121, and the atomizing nozzles 123 are arranged at intervals at the bottom of the stirring paddle 122. One end of the paddle 122 is provided with a scraper 124 along the vertical direction. The process water or the clean water prepared by the system enters the atomizing nozzle 123 through the hollow stirring rod 121 for atomizing and washing, and the stirring rod 121 and the stirring paddle 122 are stirred in time to prevent the slurry from solidifying.
The vacuum apparatus 2 communicates with the vacuum chamber 113 through a pipe. The vacuum device 2 comprises a steam-water separator 21 and a water ring vacuum pump 22, wherein the steam-water separator 21 is respectively communicated with the vacuum chamber 113 and the clean water tank 3 through pipelines, and the water ring vacuum pump 22 is respectively communicated with the steam-water separator 21 and the clean water tank 3 through pipelines. The steam-water separator 21 is provided with a negative pressure adjusting device 6. The negative pressure adjusting device 6 is a manual adjusting valve, an electric adjusting valve or a pneumatic adjusting valve. The water source for the water-ring vacuum pump 22 is process water.
The clean water tank 3 is communicated with the vacuum device 2 through a pipeline.
The construction method of the desulfurization gypsum slurry water collecting system comprises the following steps:
step one, slurry enters the box body 11 from a slurry inlet 116;
step two, opening a thick slurry discharging device 118;
step three, starting the driving motor 125, starting the stirring and washing device 12 to work, rotating the stirring paddle 122 to drive the scraper 124 to rotate, and washing the atomizing nozzle 123;
step four, the flushing water enters the box body 11 from a flushing water inlet 117, the pressure regulator 5 is regulated until the water pressure is more than 0.1MPa, and the thick slurry is discharged from the underflow port 111 and is discharged by a thick slurry discharging device 118;
and step five, starting the water ring vacuum pump 22, pumping the clean water from the vacuum chamber 113 to the steam-water separator 21 when the vacuum pressure in the vacuum chamber 113 is less than-20 kPa, and then automatically flowing and collecting the clean water in the clean water tank 3. The solid content of the clear water in the clear water tank 3 is not more than 1 percent, and the amount of the clear water in the clear water tank 3 is 15 to 30 percent of the amount of the slurry entering the slurry inlet 116.
The desulfurization gypsum slurry water collecting system controls the solid content and the output of filtered water by controlling the thick slurry discharging device and the stirring and washing device. The higher the slurry concentration at the bottom of the filter box, the shorter the filter cake formation time by the filter cloth, the faster the filter cake thickness increases, and the clearer the filtered water after the filter cake is formed. In addition, the speed of the agitation and washing device can control the thickness of the filter cake and the yield of the filtered water, and the thicker the filter cake, the lower the yield of the filtered water. The amount of the thick slurry discharged by the thick slurry discharging device 118 is controlled to be 70-85% of the amount of the slurry entering the slurry inlet 116, the amount of the clear water in the clear water tank 3 is 15% -30% of the amount of the slurry entering the slurry inlet 116, and the solid content of the clear water in the clear water tank is not more than 1%.
The above embodiments are merely illustrative of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims.
Claims (7)
1. The utility model provides a desulfurization gypsum thick liquid moisture collection system which characterized in that includes rose box (1), vacuum apparatus (2) and clear water tank (3), rose box (1) includes:
the device comprises a box body (11), wherein the top of the box body is provided with a slurry inlet (116) and a flushing water inlet (117), the bottom of the box body is provided with a bottom flow port (111), the side wall of the box body is provided with an overflow port (112), the bottom flow port (111) and the overflow port (112) are both communicated with a thick slurry discharge device (118) through pipelines, the bottom in the box body (11) is a vacuum chamber (113), a filter cloth tray (114) is arranged above the vacuum chamber (113), and filter cloth (115) is laid on the filter cloth tray (114);
the stirring and washing device (12) comprises a driving motor (125), a stirring rod (121) and a stirring paddle (122), wherein the top of the stirring rod (121) penetrates through the top of the box body (11), the stirring paddle (122) is connected to the bottom of the stirring rod (121), and atomizing nozzles (123) are arranged at the bottom of the stirring paddle (122) at intervals;
the vacuum device (2) is communicated with the vacuum chamber (113) through a pipeline;
the clear water tank (3) is communicated with the vacuum device (2) through a pipeline.
2. The desulfurized gypsum slurry moisture collection system of claim 1, wherein: one end of the stirring paddle (122) is vertically provided with a scraper (124).
3. The desulfurized gypsum slurry moisture collection system of claim 1, wherein: a coupling device (4) is arranged on a pipeline communicated with the flushing water inlet (117).
4. The desulfurized gypsum slurry moisture collection system of claim 1, wherein: and a pressure regulator (5) is also arranged on a pipeline communicated with the flushing water inlet (117).
5. The desulfurized gypsum slurry moisture collection system of claim 1, wherein: the vacuum device (2) comprises a steam-water separator (21) and a water ring vacuum pump (22), the steam-water separator (21) is respectively communicated with the vacuum chamber (113) and the clean water tank (3) through pipelines, and the water ring vacuum pump (22) is respectively communicated with the steam-water separator (21) and the clean water tank (3) through pipelines.
6. The desulfurized gypsum slurry moisture collection system of claim 5, wherein: and a negative pressure adjusting device (6) is arranged on the steam-water separator (21).
7. The desulfurized gypsum slurry moisture collection system of claim 1, wherein: the filter cloth tray (114) and the filter cloth (115) are provided with holes, and the pores of the filter cloth (115) are smaller than 40 um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920658140.6U CN210302634U (en) | 2019-05-08 | 2019-05-08 | Desulfurized gypsum slurry moisture collecting system |
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| CN201920658140.6U CN210302634U (en) | 2019-05-08 | 2019-05-08 | Desulfurized gypsum slurry moisture collecting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064239A (en) * | 2019-05-08 | 2019-07-30 | 北京国电龙源环保工程有限公司 | A kind of desulfurized gypsum slurries moisture collection system and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064239A (en) * | 2019-05-08 | 2019-07-30 | 北京国电龙源环保工程有限公司 | A kind of desulfurized gypsum slurries moisture collection system and construction method |
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Address after: 100039 room 901, 9 / F, building 1, yard 16, West Fourth Ring Middle Road, Haidian District, Beijing Patentee after: Guoneng Longyuan environmental protection Co.,Ltd. Address before: 100039 room 911, 1 building, 16 West Fourth Ring Road, Haidian District, Beijing. Patentee before: BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENGINEERING Co.,Ltd. |