Dust collection and treatment device for bag-type dust collector

Abstract

An improved dedusting ash collecting and processing device of a bag-type dust collector is characterized in that a dust collecting pool is designed in a sinking type and totally closed mode, and the device has an anti-seepage function so as to reduce environmental pollution and occupational health risks. The device is directly connected with an ash hopper of a dust remover through two sealed ash inlets, so that efficient collection of dust is ensured. And a stirrer is arranged in the dust collection tank and is matched with a bottom water outlet and a water return pump to realize solubilization and cyclic utilization of the fly ash. In addition, a fire-fighting connecting facility arranged beside the pool and a negative-pressure air pipe at the top further improve the safety and the environmental protection performance. The dust raising problem in the traditional dust discharging process is effectively avoided, and environment-friendly treatment and resource reutilization of the fly ash are achieved.

Description

Technical Field

[0001] The utility model relates to a dust collecting and processing device of a bag dust collector used for exhaust gas dust removal. Background Art

[0002] The dust collector used in the waste gas treatment process of the polyferric sulfate production process is a bag dust collector. Bag dust collector is a common industrial dust collector, which uses the filtering effect of fiber fabric to filter dust-containing gas. When the dust-containing gas enters the bag dust collector, the dust with large particles and high specific gravity settles down due to gravity and falls into the ash hopper. When the gas containing finer dust passes through the bag, the dust is retained, so that the gas is purified and the dust removal effect is significant.

[0003] However, since a large amount of small dust particles are generated in the production process of polyferric sulfate, when the dust collector hopper is opened to load and unload the dust ash, the small dust particles in the hopper will still cause dust, causing secondary pollution to the environment, endangering the occupational health of on-site employees, and also increasing production-related processing costs. Utility Model Content

[0004] In order to solve the defects of the above-mentioned prior art, the purpose of the utility model is to provide a dust collection and processing device for polyferric sulfate dust, so as to solve the dust phenomenon caused by using the dust collector ash hopper to unload dust.

[0005] Technical solution of the utility model:

[0006] A dust collecting and processing device for a bag dust collector, the structure of which includes a dust collecting pool; an ash outlet is provided above the dust collecting pool and is sealedly connected to the ash hopper of the dust collector; two water pipes are provided above the ash outlet; an agitator is provided in the center of the dust collecting pool; the dust collecting pool is provided with a water outlet and is equipped with a return water pump; a negative pressure air duct is provided at the edge of the pool top and is connected to the dust collector.

[0007] The beneficial effects of the utility model are as follows: utilizing the property of polyferric sulfate being easily soluble in water, by introducing the dust removal ash into a pool with an agitator and a water pipe, the effects of simultaneously collecting, storing, loading and unloading the dust removal ash can be achieved, while preventing the dust removal ash from compacting and the dust leakage from causing dust. In addition, a negative pressure vent is arranged in the pool to return a small amount of dust generated during the dust collection process to the dust collector for dust removal, thus solving the dust generation problem when the ash hopper of the dust collector is used to unload the ash directly. After being re-formulated, the solution collected in the dust collection pool can be returned to the production system for use, thus increasing the utilization efficiency of the product and effectively preventing the secondary pollution to the environment caused by the discharge of waste liquid and the harm to the occupational health of on-site employees caused by dust generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a cross-sectional view of the dust collecting pool of the dust ash storage and processing device.

[0009] In the figure: 1-dust collecting tank, 2-agitator, 3-ash hopper, 4-ash outlet, 5-water guide pipe, 6-water outlet, 7-recycling water pump, 8-negative pressure air duct. DETAILED DESCRIPTION

[0010] The following is a further description of the embodiments in conjunction with the accompanying drawings.

[0011] Figure 1 As shown: a dust collection and treatment device for bag dust collector, the dust collection pool 1 is a sunken fully enclosed brick-concrete structure water tank, the interior of which is treated for anti-seepage; an ash outlet 4 is provided above the dust collection pool 1 and is sealed and connected to the ash hopper 3. A water guide pipe 5 is provided above the ash outlet. An agitator 2 is provided in the center of the dust collection pool; the dust collection pool 1 is provided with a water outlet 6 and a return water pump 7; a negative pressure air duct 8 is provided at the edge of the pool top to connect back to the dust collector, and the negative pressure air duct outlet is provided with a regulating valve to control the pressure in the pool.

[0012] The dust collecting pool 1 is 2 m long, 4 m wide and 3 m high, with an above-ground structure height of 0.8 m and a buried depth of 2.2 m. The wall thickness of the brick-concrete structure pool is 0.5 m. The material selection of the pool can effectively collect the polyferric sulfate solution and prevent penetration. The water pipe 5 is made of stainless steel SUS 304 with a diameter of 50 mm to ensure corrosion resistance and durability. To increase fire safety, a faucet connected to the fire hose line can be provided next to the dust collecting pool 1 and connected to the fire hose through a rubber hose with a nozzle.

[0013] Working process and principle: Before the dust ash is discharged into the dust collection pool 1, the nozzle is first connected to the water pipe 5, and water is added to the dust collection pool 1. When the liquid level gauge shows that the water level reaches the predetermined height, the water source is turned off and the ash hopper 3 is opened to discharge the dust ash into the ash outlet 4, so as to realize the collection and storage of the dust ash. A stirrer 2 is provided in the center of the dust collection pool 1. The stirring rod 3 connected to the pool is 2 m long and DN 80 in diameter. After the dust ash is collected into the dust collection pool 1 and filled with water, the stirrer is turned on to prevent the dust ash from hardening in the dust collection pool 1 through uninterrupted stirring. After the dust ash is dissolved in water, it is configured into a 31.52% solution. This concentration is determined according to the solubility of polyferric sulfate and the subsequent treatment requirements. Then, it is sent to the system for reuse through the return water pump 7 and the outlet 6. There is also a negative pressure vent 8 at the top edge of the pool, which can collect a small amount of dust generated in the pool and return it to the dust collector for re-dust removal.

Claims

1. A dust collection and processing device for a bag filter, comprising a dust collection pool, characterized in that: An ash outlet is provided above the dust collecting pool and is sealedly connected to the ash hopper of the dust collector; two water pipes are provided above the ash outlet; an agitator is provided in the center of the dust collecting pool; the dust collecting pool is provided with a water outlet and a return water pump; a negative pressure air duct is provided at the edge of the pool top and is connected to the dust collector.

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