A dust removal and demisting device between slag conveying belts and a method of using the same

Abstract

The present invention discloses a dust removal and demisting device between slag conveying belts and a method for using the device, comprising a washing tower (1), wherein an air suction pipe (2) is arranged above the washing tower (1), and an air suction hood (3) is arranged at the air suction port of the air suction pipe (2), and the air suction hood (3) is located above the slag conveying belt (4); the air outlet of the washing tower (1) is connected to a demisting device (5); the washing tower (1) comprises a tower body (101), an air inlet (102) is arranged at the top of the tower body (101), and an air outlet (103) is arranged at one side of the lower part of the tower body (101); a circulating water pool (104) is arranged at the bottom of the tower body (101), and the circulating water pool (104) is connected to a water spray assembly (105) located at the upper part of the tower body (101) through a pipeline and a circulating water pump, and an adsorption filler layer (106) is arranged below the water spray assembly (105). The present invention has the characteristics of being able to effectively improve the dust removal and demisting effect.

Description

Technical Field

[0001] The invention relates to an air treatment device for a slag conveying belt room, in particular to a dust removal and demisting device for a slag conveying belt room and a use method thereof. Background Art

[0002] As an auxiliary facility of the circulating fluidized bed boiler, the slag conveying system can continuously convey the slag after combustion of the circulating fluidized bed boiler to the slag storage. The slag conveying system mainly includes slag conveying vibrator, slag conveying belt and other components. Since the ash coming out of the slag discharger contains dust and water vapor, the slag conveying belt will be filled with dust and water vapor during the slag conveying process, which seriously affects the air quality in the area and endangers the health of workers. In order to deal with the problem of dust and water vapor leakage in the ash on the slag conveying belt, it is generally carried out in a way that the demisting equipment and the dust removal bag are matched. The demisting equipment is used to remove the water vapor in the air, and the dust in the air is removed by the dust removal bag; however, since the air contains water vapor and dust, if the demisting equipment is used for demisting first, dust blockage is easy to occur during the demisting process; if the dust removal bag is used for dust removal first, since the dust is in a humid state, it is also easy to get blocked; therefore, the existing demisting equipment and dust removal bag are easy to get blocked when performing dust removal and demisting, which affects the final dust removal and demisting effect and efficiency. Therefore, the existing technology has the problem of unsatisfactory dust and mist removal effects. Summary of the invention

[0003] The purpose of the present invention is to provide a dust removal and demisting device between slag conveying belts and a method for using the device. The present invention has the characteristics of being able to effectively improve the dust removal and demisting effect.

[0004] The technical solution of the present invention is as follows: a dust and mist removal device between slag conveyor belts, comprising a washing tower, a suction duct is arranged above the washing tower, a suction hood is arranged at the suction port of the suction duct, and the suction hood is located above the slag conveyor belt; the air outlet of the washing tower is connected to a demister; the washing tower comprises a tower body, an air inlet is arranged at the top of the tower body, and an air outlet is arranged at one side of the lower part of the tower body; a circulating water pool is arranged at the bottom of the tower body, the circulating water pool is connected to a water spray assembly located at the upper part of the tower body via a pipeline and a circulating water pump, and an adsorption filler layer is arranged below the water spray assembly.

[0005] In the aforementioned dust and mist removal equipment between slag conveyor belts, a circulating water pool is located below the air outlet; a sewage pump is also provided on the side of the circulating water pool, and the sewage pump is connected to the slag pit through a pipeline.

[0006] In the aforementioned slag conveyor belt dust removal and demisting equipment, the water spray assembly includes a conical ventilation piece fixed in the tower body, a group of conically distributed water spray pipes are provided outside the conical ventilation piece, and each water spray pipe is provided with a first spray nozzle; a central vertical spray pipe is provided inside the conical ventilation piece, and a spirally distributed second spray nozzle is provided on the central vertical spray pipe; an annular spray pipe is provided below the conical ventilation piece, and third spray nozzles are provided on both the inner and outer sides of the annular spray pipe.

[0007] In the aforementioned dust and mist removal equipment between slag conveyor belts, the circulating water pool includes a pool body, a sludge pool is provided on the side of the pool body, a vertical filter screen is provided between the sludge pool and the pool body, and the sludge pump is connected to the sludge pool; a horizontal filter screen is provided above the pool body, a slag removal plate is provided on the other side above the horizontal filter screen, a driving cylinder is provided on the outside of the tower body, a connecting rod is provided at the output end of the driving cylinder, and the end of the connecting rod is connected to the sludge removal plate.

[0008] In the aforementioned dust and mist removal equipment between slag conveyor belts, a dust suction fan is provided on the suction duct.

[0009] A method for using a dust removal and demisting device between slag conveying belts. Air containing dust and water vapor in the ash on the slag conveying belt is sucked into a dust suction hood and an air suction duct by a dust suction fan, and then sent to a washing tower for washing. After the dust is removed, the air enters a demisting device for demisting treatment and is discharged into the atmosphere.

[0010] In the aforementioned method of using the dust removal and demisting equipment between slag conveyor belts, air enters the washing tower, first contacts with the spray liquid, and then contacts with the adsorption filler under the action of gravity to complete the removal of dust; the air enters the demister to complete the demisting treatment; the spray liquid returns to the circulating water pool under the action of gravity, and is transported to the upper water spray assembly for circulation through the circulating pump.

[0011] Compared with the prior art, the present invention is composed of a washing tower and a demister. The washing tower is placed in front of the demister. The air is first subjected to spray dust removal and adsorption dust removal treatment, and then subjected to demister treatment, thereby effectively preventing accumulation and clogging during the dust removal and demistering process, and effectively improving the dust removal and demistering effect and the efficiency of the dust removal and demistering (no need to regularly clean the clogging area); in the spray tower, the water spray assembly is placed above the adsorption filler layer, and the dust is first adsorbed by the spray water and then adhered to the filler, thereby effectively removing the dust in the air, and the spray water can also flush the dust adsorbed on the filler, so that the filler can be recycled, and the spray water can be repeatedly recycled after being filtered by the filter; the present invention has a simple structure, a high recycling rate, and a low cost of use. In summary, the present invention has the characteristics of being able to effectively improve the dust removal and demistering effect.

[0012] In addition, the water spray assembly of the present invention is composed of a conical ventilation member, a conically distributed water spray pipe, a central vertical spray pipe and an annular spray pipe, thereby effectively improving the spraying effect and increasing the adsorption rate of dust in the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention;

[0014] Figure 2 yes Figure 1 A partial enlarged view of .

[0015] The markings in the accompanying drawings are: 1-washing tower, 2-suction duct, 3-suction hood, 4-slag conveying belt, 5-demister, 6-dust suction fan, 101-tower body, 102-air inlet, 103-air outlet, 104-circulating water pool, 105-water spray assembly, 106-adsorption packing layer, 151-conical ventilation member, 152-water spray pipe, 153-central vertical spray pipe, 154-annular spray pipe, 141-pool body, 142-sludge pool, 143-vertical filter screen, 144-horizontal filter screen, 145-slag removal plate, 146-driving cylinder. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0017] Embodiment. A dust removal and mist removal device between slag conveyor belts, comprising: Figure 1 to Figure 2 As shown, it includes a washing tower 1, a suction pipe 2 is provided above the washing tower 1, a suction hood 3 is provided at the suction port of the suction pipe 2, and the suction hood 3 is located above the slag conveying belt 4; the air outlet of the washing tower 1 is connected with a demister 5; the washing tower 1 includes a tower body 101, an air inlet 102 is provided at the top of the tower body 101, and an air outlet 103 is provided on one side of the lower part of the tower body 101; a circulating water pool 104 is provided at the bottom of the tower body 101, and the circulating water pool 104 is connected to a water spray assembly 105 located at the upper part of the tower body 101 through a pipeline and a circulating water pump, and an adsorption filler layer 106 is provided below the water spray assembly 105.

[0018] The circulating water pool 104 is located below the gas outlet 103; a sewage pump is also provided on the side of the circulating water pool 104, and the sewage pump is connected to the slag pit through a pipeline.

[0019] The water spray assembly 105 includes a conical ventilation member 151 fixed in the tower body 101, a group of conically distributed water spray pipes 152 are provided outside the conical ventilation member 151, and each water spray pipe 152 is provided with a first spray nozzle; a central vertical spray pipe 153 is provided inside the conical ventilation member 151, and a spirally distributed second spray nozzle is provided on the central vertical spray pipe 153; an annular spray pipe 154 is provided below the conical ventilation member 151, and third spray nozzles are provided on both inner and outer sides of the annular spray pipe 154.

[0020] The circulating water pool 104 includes a pool body 141, a sludge pool 142 is provided on the side of the pool body 141, a vertical filter screen 143 is provided between the sludge pool 142 and the pool body 141, and a sludge pump is connected to the sludge pool 142; a horizontal filter screen 144 is provided above the pool body 141, a slag removal plate 145 is provided on the other side above the horizontal filter screen 144, a driving cylinder 146 is provided on the outside of the tower body 101, a connecting rod is provided at the output end of the driving cylinder 146, and the end of the connecting rod is connected to the slag removal plate 145.

[0021] The air suction duct 2 is provided with a dust suction fan 6 .

[0022] A method for using a dust removal and demisting device between slag conveying belts. Air containing dust and water vapor in the ash on the slag conveying belt is sucked into a dust suction hood and an air suction duct by a dust suction fan, and then sent to a washing tower for washing. After the dust is removed, the air enters a demisting device for demisting treatment and is discharged into the atmosphere.

[0023] The air enters the scrubbing tower, first contacts the spray liquid, and then contacts the adsorbent filler under the action of gravity to complete the dust removal; the air enters the demister to complete the defogger treatment; the spray liquid returns to the circulating water pool under the action of gravity, and is transported to the upper water spray assembly through the circulating pump for recycling.

[0024] A group of evenly distributed ventilation openings are arranged on the conical ventilation piece.

[0025] The air suction hood includes a hood body, and the two ends of the bottom of the hood body are respectively provided with a left suction port and a right suction port that are rotatably connected, and the middle part of the bottom of the hood body is provided with a middle suction port, and the hood body is provided with a filter screen; the left suction port and the right suction port are connected to the hood body through a rotating shaft, and the rotating shaft is provided with a driving gear, and the driving gear is connected to a motor provided with a gear; the left suction port and the right suction port are connected to the gap of the hood body through a soft sealing cover. Through the cooperation of the left west inlet, the middle suction port and the right suction port, most of the air can be sucked in, the amount of air containing water vapor and dust can be increased, and the air quality can be greatly improved; moreover, the ash and slag that are accidentally inhaled can fall from the other two suction ports.

[0026] The working process of the present invention is as follows: the air above the slag conveying belt is sucked into the suction hood by a suction motor, and enters the washing tower through the suction pipe, first contacts with the conical ventilation member in the water spray assembly, and contacts with the spiral spray water in the conical ventilation member, and then the air and water flow out from the air outlet of the conical ventilation member, and contact with the spray water with a conical distribution on the outside and the annular spray water, so as to achieve the purpose of removing dust by water spraying, and then the air contacts with the filler to further absorb the dust in the air, and after the dust adsorption is completed, the air flows through the air outlet to the demister for defog treatment, and finally is discharged into the atmosphere.

[0027] At the same time, the dust adsorbed on the filler will also fall into the circulating water pool under the flushing of the spray water. In the circulating water pool, the dust is filtered by the filter, and the water flows under the filter and is re-transported to the spray pipe by the circulating water pump for reuse; the dust on the filter will be regularly cleaned by the slag removal plate and pushed into the sludge pool, and the dust will be regularly transported to the slag pit by the sludge pump.

Claims

1. A dust and mist removal device between slag conveyor belts, characterized in that: The washing tower (1) comprises a washing tower (1), wherein an air suction pipe (2) is provided above the washing tower (1), an air suction hood (3) is provided at the air suction port of the air suction pipe (2), and the air suction hood (3) is located above a slag conveying belt (4); the air outlet of the washing tower (1) is connected to a demister (5); the washing tower (1) comprises a tower body (101), an air inlet (102) is provided at the top of the tower body (101), and an air outlet (103) is provided at one side of the lower part of the tower body (101); a circulating water pool (104) is provided at the bottom of the tower body (101), and the circulating water pool (104) is connected to a water spray assembly (105) located at the upper part of the tower body (101) via a pipeline and a circulating water pump, and an adsorption filler layer (106) is provided below the water spray assembly (105); The circulating water pool (104) is located below the gas outlet (103); a sewage pump is also provided on the side of the circulating water pool (104), and the sewage pump is connected to the slag pit via a pipeline; The water spray assembly (105) comprises a conical ventilation member (151) fixed in the tower body (101); a group of water spray pipes (152) distributed in a conical shape are arranged outside the conical ventilation member (151); each water spray pipe (152) is provided with a first spray nozzle; a central vertical spray pipe (153) is arranged inside the conical ventilation member (151); the central vertical spray pipe (153) is provided with a spirally distributed second spray nozzle; an annular spray pipe (154) is arranged below the conical ventilation member (151); third spray nozzles are arranged on both inner and outer sides of the annular spray pipe (154); The circulating water pool (104) comprises a pool body (141), a sludge pool (142) is provided on the side of the pool body (141), a vertical filter screen (143) is provided between the sludge pool (142) and the pool body (141), and a sludge pump is connected to the sludge pool (142); a horizontal filter screen (144) is provided above the pool body (141), a slag removal plate (145) is provided on the other side above the horizontal filter screen (144), a driving cylinder (146) is provided on the outside of the tower body (101), a connecting rod is provided at the output end of the driving cylinder (146), and the end of the connecting rod is connected to the sludge removal plate (145); The air suction duct (2) is provided with a dust suction fan (6); The air suction hood includes a hood body, and the two ends of the bottom of the hood body are respectively provided with a left suction port and a right suction port which are rotatably connected, and the middle part of the bottom of the hood body is provided with a middle suction port, and a filter screen is provided in the hood body; the left suction port and the right suction port are connected to the hood body via a rotating shaft, and a driving gear is provided on the rotating shaft, and the driving gear is connected to a motor with a gear; the left suction port and the right suction port are connected to the gap of the hood body via a soft sealing cover.

2. A method for using the dust and mist removal equipment between slag conveyor belts according to claim 1, characterized in that: The air containing dust and water vapor in the ash on the slag conveyor belt is sucked into the dust hood and the suction duct by the dust suction fan, and then sent to the washing tower for washing. After the dust is removed, the air enters the demister for defog treatment and is discharged into the atmosphere.

3. The method for using the dust and mist removal equipment between slag conveyor belts according to claim 2 is characterized in that: The air enters the scrubbing tower, first contacts the spray liquid, and then contacts the adsorption filler under the action of gravity to complete the dust removal; the air enters the demister to complete the demisting process; The spray liquid returns to the circulating water pool under the action of gravity and is transported to the upper water spray assembly through the circulating pump for circulation.

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