CN203139849U - Wet dust collector of superfine sodium sulfate production process - Google Patents

Abstract

The utility model discloses a wet dust collector of superfine anhydrous sodium sulphate production process is the wet dust collector who establishes at anhydrous sodium sulphate export raise dust point, its characterized in that: the water-saving water tank comprises a dust-absorption bell mouth, an air inlet pipe, a tank body, an induced draft fan and a water pump, wherein the tank body is filled with water and is provided with a water inlet and a water outlet, the water inlet is provided with a water level control valve, and the lower part of the tank body is provided with a drain pipe; the upper part of the tank body is provided with an exhaust pipe, the lower part of the side surface is provided with an air inlet pipe, and the air inlet pipe is submerged by the water level in the tank body; the tank body is sequentially provided with an umbrella-shaped cap, a filter screen and a water baffle from the water surface to the exhaust pipe. The utility model discloses simple structure, can carry out effectual filtration to dirty gas, its filter effect is good, and the filter screen can be dismantled and get off to maintain the washing.

Description

Wet dust removal device in the production process of ultrafine sodium sulfate

technical field

The utility model relates to a wet-type dedusting and recycling equipment for dust-raising points during the production and packaging of Yuanming powder, which washes the dust-containing gas through a water bath to achieve the effect of separating powder and gas, and improves the working environment of the dust-raising points. the

Background technique

China is the largest exporter of sodium bicarbonate, and my country's sodium bicarbonate enjoys a high reputation in the world. With the economic development in recent years, during the "Tenth Five-Year Plan" period, the output of Chinese sodium bicarbonate increased by an average of 20%. According to " According to the development plan of the Eleventh Five-Year Plan, the heavy chemical industry is still one of the key points of development. As a basic chemical raw material, sodium sulfate will also usher in great development in various application fields. According to the former Ministry of Chemical Industry's forecast of the demand for chemical raw materials from 1995 to 2020, in the next 5 to 10 years, the demand for sodium sulfate in my country will still have a strong growth momentum of 10-15%. Among them, the total demand for sodium sulfate in 2006-2010 is about 55 million tons, with an annual average of 11 million tons. The demand in 2010 is predicted to reach 14.4 million tons, and the annual demand will maintain a growth rate of about 15%. the

There are dust spots in the production and packaging process of sodium sulfate and the distribution is relatively scattered. In order to reduce the amount of dust at the dust spots and improve the working environment of workers, it is necessary to increase dust removal equipment. The existing dust removal equipment on the market is basically made of carbon steel and stainless steel, and it is basically used in large dust removal places. There are dust spots in the production and packaging process of sodium sulfate and the distribution is relatively scattered. In order to reduce the amount of dust at the dust spots and improve the working environment of workers, it is necessary to increase dust removal equipment. The existing dust removal equipment on the market is basically made of carbon steel and stainless steel, and it is basically used in large dust removal places. If carbon steel dust removal equipment is used, due to the corrosion of sodium sulfate, frequent equipment replacement will result in high follow-up maintenance costs. If stainless steel is used, the cost is high and the capital investment is large, so it is necessary to manufacture a simple, effective and cheap dust removal device to solve the dust problem at the existing dust raising point. the

There are many reports on dust removal devices in industry. We searched and failed to retrieve dust removal literature on the production process of sodium sulfate, but there are still some reports on wet dust removal devices for dusty gases in mining, metallurgy, cement and other industries, for example:

1. Chinese patent, application number: 201020672845.2 Application date: 2010.12.22 Name: A wet dust removal device applicant (patent) person: Juqin; address: No. 63, Hexi Village, Chunjiang Town, Xinbei District, Changzhou City, Jiangsu Province; inventor: Juqin; Abstract: This utility model relates to a wet dedusting device suitable for dust-containing gas in mining, metallurgy, cement and other industries, including a cylindrical dust-removing shell with an upper end cover and multiple A filter screen, the lower side wall of the cylindrical dust removal shell is provided with a waste gas inlet pipe, and the upper end cover is provided with a clean air discharge port. The position is limited by the limit steps on the wall of the body, a spray device is provided under the bottom filter screen in the dust removal housing, and an exhaust fan is provided at the outlet of the clean air. the

2. Chinese patent, application number: 201210053549.8 Application date: 2012.03.01 Name: A wet dust removal device Applicant: Chen Weijin Address: Room 802, Building 11, Zhongqiaoyuan, Gongxin Road, Shantou City, Guangdong Province; Inventors: Chen Weijin; Chen Yongsheng; Wu Yayi ;Abstract: A wet dust removal device, including a box, the box is divided into upper and lower chambers through a partition, the lower chamber is equipped with a water reservoir and an air inlet, and the upper chamber is equipped with an air outlet; One side of the pool is separated by a dust sweeping plate to form a dust discharge chamber, which includes the overflow port and the drain port of the reservoir; the air inlet is connected to a spiral air pipe that passes through the liquid surface of the reservoir. The spiral air duct is provided with a first air outlet submerged in water and a second air outlet near the water surface, and a nozzle is arranged above the lower chamber; There is a filter plate filled with dust-removing fillers, a nozzle is arranged above the filter plate, and sound-absorbing cotton is laid under the opening of the elbow. the

It is known from the literature that wet dust removal is a method of fully contacting the dust-containing gas with the washing liquid (generally water) to wash the dust particles and purify the gas. This dust removal method has high efficiency, simple structure, low cost, small footprint, convenient operation and maintenance, and is especially suitable for processing high temperature, high humidity, flammable and explosive dusty gases. In addition, it can also remove some gaseous pollutants while removing dust. Therefore, it is widely used in air pollution control and gas purification in various sectors of industrial production. It is necessary to treat the dusty sewage and sludge after washing; when treating and purifying corrosive gaseous pollutants, the washing water will be corrosive to a certain extent, and the equipment is susceptible to corrosion. Anti-corrosion measures should be taken, which is better than general dry dust removal The operating cost of the device is high. the

Contents of the invention

The purpose of the utility model is to solve the deficiencies in the present technology and provide the use of sodium sulfate which is very soluble in water, and use water as the dust removal medium to contact and dissolve the sodium sulfate in the dust-containing gas with water, so that the dust-containing gas can be obtained. A simple and effective wet dust removal device discharged after purification solves the problem of dust at dust points in the production process of existing sodium sulfate and improves the working environment of workers. the

In order to achieve the above object, the technical scheme of the utility model is as follows:

The wet dust removal device in the production process of Yuanming powder is a wet dust removal device located at the dust point of the Yuanming powder outlet, including a dust suction bell mouth, an air intake pipe, a tank, an induced draft fan and a water pump, and the tank is filled with water. , and is provided with water inlet and outlet, the water inlet is controlled by a water level control valve, and a drain pipe is provided at the lower part of the tank body; an exhaust pipe is provided at the upper part of the tank body, and an air intake pipe is provided at the lower part of the side, and the water level in the tank body submerges the air intake pipe; the tank body From the water surface to the exhaust pipe, an umbrella-shaped cap, a filter screen, and a water baffle are arranged in sequence. the

The lower part of the above-mentioned tank body is provided with an observation hole. the

A water pump is arranged under the above-mentioned umbrella cap. the

Above-mentioned tank body, intake pipe, exhaust pipe, water inlet pipe, drain pipe, water retaining plate, umbrella-shaped cap all adopt plastic material to make. the

Compared with the prior art, the utility model has the following advantages:

1. Design the wet dedusting and recycling equipment at the dusty point during the production and packaging of Yuanming powder. The dusty gas is washed by water bath to achieve the effect of separation of powder and gas, which improves the working environment of the dusty point. the

2. Simple structure, few parts, easy manufacture, low cost, easy maintenance, and not easy to corrode. the

3. An umbrella-shaped cap is installed in the wet dust removal device, and the water on the umbrella-shaped cap is pumped from the tank to be self-sufficient, which improves the dust removal efficiency and saves water. the

4. The Yuanming powder of the dust at the dust point is relatively pure, so the saturated dusty water can be discharged into the company's nitric acid pool for recycling. the

The beneficial effects of the present invention are:

The utility model has a simple structure, can effectively filter the dust-containing gas, has good filtering effect, and the filter screen can be disassembled for maintenance and cleaning. the

It has the characteristics of simple structure, easy maintenance, easy operation, and the advantages of direct on-site discharge after dust removal, which is environmentally friendly and energy-saving. the

Description of drawings

Fig. 1 is the schematic diagram of the wet dust removal and recycling equipment at the dust raising point during the production and packaging of Yuanming powder of the present invention. the

Serial numbers and parts names in the figure: 1. Air intake pipe, 2. Tank body, 3. Water retaining plate, 4. Filter screen, 5. Exhaust pipe, 6. Induced fan, 7. Water inlet pipe, 8. Water level controller, 9, water pump, 10, umbrella cap, 11, drainage pipe, 12, observation hole. the

Detailed ways

Example:

As shown in Fig. 1, the utility model provides a kind of wet dedusting device that is used for the dust raising point of Yuanming powder. , a water pump 9, a water retaining plate 3, a filter screen 4, an umbrella cap 10, and a water level controller 8; it is characterized in that the tank body 2 is filled with water, and is provided with a water inlet pipe 7, and the water inlet is provided with a water level controller 8, The lower part of the tank body 2 is provided with a drainage pipe 11; the upper part of the tank body is provided with an exhaust pipe 5, and the lower part of the side is provided with an air intake pipe 1, and the water level in the tank body 2 submerges the air intake pipe 1; the tank body 2 extends from the water surface to the exhaust pipe 5 An umbrella-shaped cap 10, a filter screen 4, and a water retaining plate 3 are arranged in sequence; an observation hole 12 is arranged below the tank body 2; a water pump 9 is arranged under the umbrella-shaped cap; Water pipe 7, drainage pipe 11, water retaining plate 3, umbrella-shaped cap 10 all adopt polyvinyl chloride material to make. the

working principle:

The dust generated by the dust-flying point of Yuanming powder is sucked in by the induced draft fan 6 from the air inlet pipe 1, and sent to the water surface in the tank body 2, and the water in the tank body 2, under the action of the dust-containing gas, arouses waves and water Fog, make sodium sulfate fully contact with water and diffuse and dissolve in water, if sodium sulfate dissolves saturated in water then sodium sulfate settles in the bottom of tank body 2 with the form of precipitation. The dusty gas escaping from the water layer continues to filter through the water film on the umbrella cap 10 and the filter screen 4, and the filtered gas is discharged from the exhaust pipe 5 after passing through the water retaining plate 3. the

The water film on the umbrella-shaped cap 10 is formed by the water pump 9 from the tank body 2, and falls into the tank body after vacuuming, which is self-sufficient, saves water, and improves the efficiency of dust removal simultaneously. the

When it is observed from the observation hole 12 that there is sedimentation in the tank body, it shows that the sodium sulfate in the aqueous solution is saturated, that is, the drain valve can be opened and the saturated sodium sulfate aqueous solution is discharged into the nitrification pool for recycling. Water inlet pipe 7 is provided with water level controller 8, when the water level in the tank body is lower than certain water level, can open valve automatically and replenish water. the

Claims (4)

1. The wet dust removal device in the production process of ultrafine sodium sulfate is a wet dust removal device located at the dust point at the outlet of sodium sulfate. It is characterized in that it includes a vacuum bell mouth, an air intake pipe, a tank, an induced draft fan and a water pump. The tank body described above is filled with water, and is provided with a water inlet and outlet, a water level control valve is set at the water inlet, and a drain pipe is arranged at the lower part of the tank body; an exhaust pipe is arranged at the upper part of the tank body, an air inlet pipe is arranged at the lower part of the side, The water level submerges the intake pipe; the tank body is provided with an umbrella-shaped cap, a filter screen and a water baffle successively from the water surface to the exhaust pipe. the 2. The wet dedusting device in the production process of ultrafine sodium silicate powder according to claim 1, characterized in that: the lower part of the tank body is provided with an observation hole. the 3. The wet dedusting device according to claim 1, characterized in that: a water pump is arranged under the umbrella-shaped cap. the 4. according to the wet type dedusting device of the superfine sodium sulfate production process described in claim 1, it is characterized in that: described tank body, inlet pipe, exhaust pipe, water inlet pipe, drain pipe, water retaining plate and umbrella Shaped caps are all made of plastic material. the