Water bath dust collection device for inorganic superfine powder production

Abstract

The utility model discloses a water bath dust collection device for inorganic superfine powder production. The water bath dust collection device comprises an air inlet pipe (1), a water bath dust removal box (2), a spray head (3), a water baffle (4), a demister (5), an air outlet pipe (6), a water inlet pipe (7), a water outlet pipe (8), a water pump (9) and a water tank (10). Dusty gas in the production process enters water in the water bath dust removal box from the gas inlet pipe, and part of dust is directly captured by the water; uncaptured dust moves upwards along with the gas, at the moment, the spray head sprays atomized water to the dust-containing gas, and the dust is fully contacted with the water mist to be captured; when the gas moves upwards, the gas and the liquid are further mixed, the dust removal efficiency is improved, and finally the gas passes through the water baffle, passes through the demister and is discharged after water mist is removed. According to the utility model, the gas-liquid contact area is greatly increased and the gas-liquid contact time is greatly prolonged through secondary treatment of gas water bath dust removal and atomization water spraying of the gas inlet pipe, inorganic superfine powder dust can be more fully contacted with water and is captured, and the dust removal efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a water bath dust collection device for inorganic superfine powder production belongs to environmental protection dust removal technical field. BACKGROUND

[0002] In the production, processing and other processes of inorganic superfine powder (calcium carbonate, silicon powder, magnesium hydroxide, talc powder and the like), a large amount of dust will be generated, which not only causes serious pollution to the working environment and harms the health of the operators, but also may cause safety accidents such as explosion.

[0003] The traditional dust removal methods such as bag dust removal and electrostatic dust removal have certain limitations for the dust removal of inorganic superfine powder. The bag dust removal is prone to problems such as bag blockage and damage, which affects the dust removal effect and the service life of the equipment; the electrostatic dust removal has poor dust removal effect for inorganic superfine powder with high humidity and small particle size, and the equipment cost is high. SUMMARY

[0004] The utility model aims at solving the dust pollution generated in the production process of traditional superfine powder, and provides a water bath dust collection device for inorganic superfine powder production.

[0005] The technical scheme of the utility model is as follows: a water bath dust collection device for inorganic superfine powder production, comprising a water bath dust removal box, a spray head, a water pump, a demister, an air inlet pipe and a water baffle; the water bath dust removal box is divided into an upper part and a lower part, and the two parts are separated by a water baffle; the air inlet pipe is a straight-through pipe and is installed vertically to the horizontal plane in the center of the water bath dust removal box, the upper end of the air inlet pipe extends out of the top of the water bath dust removal box, the air inlet pipe penetrates through the water baffle, the lower end of the air inlet pipe is a downward horn-shaped opening, and the end is close to the bottom of the water bath dust removal box; an air outlet pipe is arranged on the side wall of the upper part of the water bath dust removal box, and a demister is arranged on the air outlet pipe; the spray head is arranged on one side above the side wall of the lower part of the water bath dust removal box, a water inlet pipe is arranged in the middle of the other side of the side wall, and a water outlet pipe is arranged at the lower part of the other side of the side wall.

[0006] The gap between the air inlet pipe and the top of the water bath dust removal box and the water baffle is sealed.

[0007] The spray head is connected to the water pump through a water pipe, the water pump is connected to a water tank and takes water from the water tank to supply water mist to the spray head; the spray head can be provided with 2-16 spray heads according to the need, the spray heads are evenly distributed along the periphery of the lower tank wall of the water baffle, and the spray nozzles of the spray heads are directed to the center of the tank body.

[0008] Water bath dust removal, a commonly used dust removal method, has advantages such as simple structure, low cost, and high dust removal efficiency. By introducing dust-laden gas into water in a water tank through the inlet duct, some dust is directly captured by the water. The uncaptured dust moves upward with the gas, at which point the nozzle sprays atomized water onto the dust-laden gas. The dust comes into full contact with the water mist and is captured. During the upward movement of the gas, gas-liquid mixing is further enhanced, improving dust removal efficiency. Finally, the gas passes through a demister to remove the water mist before being discharged from the outlet duct. This method effectively solves the dust pollution problem caused by the production of inorganic ultrafine powders and avoids dust pollution to the ecological environment.

[0009] The beneficial effects of this invention are as follows: This device employs a two-stage treatment process—gas-water bath dust removal through the inlet pipe and atomized water spray from the nozzles—significantly increasing the gas-liquid contact area and contact time. This allows inorganic ultrafine powder dust to come into more thorough contact with water and be captured, significantly improving dust removal efficiency, reaching over 95% for inorganic ultrafine powders. The device has a simple and reasonable structure, with robust connections between components. The water tank at the bottom provides stable support for the entire device, reducing shaking and vibration during operation and improving operational stability. This invention does not have complex filter components; the main maintenance tasks are periodic checks for nozzle blockage, water baffle damage, and water tank replacement, resulting in low maintenance costs and convenient operation. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of a water bath dust collection device for the production of inorganic ultrafine powder according to this utility model;

[0011] In the diagram, 1 is the air inlet; 2 is the water bath dust collector; 3 is the nozzle; 4 is the baffle plate; 5 is the demister; 6 is the air outlet pipe; 7 is the water inlet pipe; 8 is the water outlet pipe; 9 is the water pump; and 10 is the water tank. Detailed Implementation

[0012] This embodiment describes a water bath dust collection device for the production of inorganic ultrafine powders, comprising an air inlet pipe 1, a water bath dust collection box 2, a nozzle 3, a baffle plate 4, a demister 5, an air outlet pipe 6, a water inlet pipe 7, a water outlet pipe 8, and a water pump.

[0013] In this embodiment, the water bath dust collector 2 is a sealed cylindrical composite material structure, 4.6m high and 1.2m in diameter, with its internal space used for dust removal operations. The bottom of the water bath dust collector 2 is used to store water for dust removal. The air inlet pipe 1 vertically penetrates the center of the water bath dust collector 2, with its lower end shaped like a flared mouth. The flared mouth end face is located 0.8m below the water surface inside the water bath dust collector, allowing dust-laden gas to enter the water in the tank through the air inlet pipe. The air outlet pipe 6 is located at the top of the water bath dust collector, at a distance from the water bath dust collector. The top 30cm of the chamber is used to discharge the purified gas; the demister 5 is installed on the air outlet duct 6 to remove water mist from the gas; the nozzle 3 is installed on the lower side wall of the baffle plate 4, and four nozzles are installed horizontally along the inner wall of the water bath dust collector. The nozzle 3 is connected to the bottom of the water tank 10 through a pipe via a water pump 9. The water pump 9 is used to transport water from the water tank to the nozzle 3, and the nozzle atomizes the water and sprays it towards the dust-laden gas area below; the baffle plate 4 is located inside the water bath dust collector, 1.2m above the water surface.

[0014] The process flow of the device in this embodiment is as follows: In the inorganic ultrafine powder production process, the dust-laden gas enters the water in the water bath dust collector 2 through the air inlet pipe 1, and some of the dust is directly captured by the water; the uncaptured dust moves upward with the gas, at which time the nozzle 3 sprays atomized water mist onto the dust-laden gas, and the dust is captured by full contact with the water mist; during the upward movement of the gas, the gas-liquid mixing is further enhanced, and the dust removal efficiency is improved. Finally, the gas passes through the baffle plate 4 and then through the demister 6 to remove the water mist before being discharged from the air outlet pipe 8.

Claims

1. A water bath dust collection device for the production of inorganic ultrafine powders, characterized in that, The device includes a water bath dust collector, nozzles, a water pump, a demister, an air inlet pipe, and a baffle plate. The water bath dust collector is divided into upper and lower parts, separated by a baffle plate. The air inlet pipe is a straight pipe, installed perpendicular to the horizontal plane in the center of the water bath dust collector. The upper end of the air inlet pipe extends out of the top of the water bath dust collector and passes through the baffle plate. Its lower end is a downward-facing flared shape, with the end close to the bottom of the water bath dust collector. An air outlet pipe is provided on the upper side wall of the water bath dust collector, and a demister is installed on the air outlet pipe. A nozzle is installed on one side of the upper part of the lower side wall of the water bath dust collector, an air inlet pipe is provided in the middle of the other side wall, and an air outlet pipe is provided at the lower part of the other side wall.

2. The water bath dust collection device for inorganic ultrafine powder production according to claim 1, characterized in that, The gap between the air inlet pipe and the top of the water bath dust collector and the baffle plate is sealed.

3. The water bath dust collection device for inorganic ultrafine powder production according to claim 1, characterized in that, The nozzle is connected to a water pump via a water pipe, and the water pump is connected to a water tank and draws water from the water tank to supply the nozzle with water mist. The nozzle is provided in 2-16 units as needed, and is evenly distributed along the perimeter of the lower wall of the tank under the baffle plate.

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