CN202490696U - Cyclone dust collector - Google Patents

Abstract

The utility model discloses a cyclone dust collector, which comprises a shell and an air inlet and an air outlet arranged on the shell. A groove-shaped cooling water channel is provided, and the cooling water seeps out from the inside of the porous medium material layer to keep the surface of the porous medium material layer wet. The utility model can not only prevent the high-temperature dust-containing gas from damaging the body structure of the dust collector, but also effectively remove high-temperature particles in the gas, and is especially suitable for explosion-proof dust removal of high-temperature dust-containing gas and separation of fine particles under high-temperature conditions.

Description

A cyclone dust collector

technical field

The utility model relates to a high-temperature dust collector. the

Background technique

In chemical industry, petroleum, metallurgy, electric power and other industries, high temperature dusty gas is often produced. Due to the need for energy saving and emission reduction, it is necessary to dedust the high temperature dusty gas. Under high temperature conditions, due to the drastic drop in humidity, the coagulation ability of fine particles is greatly reduced. Therefore, it is very difficult to separate fine particles under high temperature conditions. In addition, at high temperatures, engineering issues such as equipment materials, structural forms, and thermal expansion often affect the effective operation of equipment.

The Chinese patent literature publication number is CN 101259453A, which discloses a high-temperature cyclone dust collector, which uses masonry refractory bricks and inlaid wear-resistant lining boards to achieve high-temperature and wear-resistant purposes, and a snake-shaped water cooling system is installed in the lower ash bin. The pipe makes the dust drop to a certain temperature, which is convenient for the discharge of the ash layer. This patent mainly solves the problem of high-temperature dust removal, relying on refractory bricks and inlaid wear-resistant lining boards to realize the high-temperature and wear-resistant dust collector body, and the water-cooled pipe is set at the lower part of the ash bin to cool down the dust that has been collected by the dust collector, which is different from the traditional The dust removal efficiency of the cyclone dust collector is similar.

The Chinese patent publication number is CN 101559307A, which discloses a high-temperature-resistant dust collector that can operate continuously at 300-1000 ° C. It uses a metal filter cartridge instead of a bag filter cartridge to withstand high temperatures. The dust collector has high dust removal efficiency. , running resistance and low energy consumption, but the metal filter cartridge is made of high temperature resistant metal material, which is expensive and greatly increases the cost of the dust collector.

Utility model content

The purpose of the utility model is to provide a high temperature resistant cyclone dust collector with high dust removal efficiency.

In order to achieve the above purpose, the following technical solutions are adopted:  

A cyclone dust collector, comprising a shell and an air inlet and an air outlet arranged on the shell, characterized in that: the inner surface of the separation area at the lower part of the shell is provided with a porous medium material layer, and the porous medium material layer has a groove inside A cooling water channel is formed, and the cooling water seeps out from the inside of the porous medium material layer to keep the surface of the porous medium material layer wet.

In order to prevent the temperature of the shell of the dust collector from being too high and reduce the energy loss of the high-temperature gas, the air inlet, the gas outlet and the lower part of the dust collector are lined with a refractory material layer.

In order to prevent the airflow from stirring up the dust in the ash hopper, the bottom of the dust collector is provided with an ash discharge port, and a flow guiding device is provided at the upper part of the ash discharge port.

In order to adjust the cooling water volume conveniently, valves are arranged on the pipes connecting the trough-type cooling water channels. the

The utility model can form a thin liquid film on the inner surface of the dust collector, increase the humidity inside the dust collector, improve the coagulation ability of fine particles, effectively suppress the secondary dust effect, facilitate the collection of dust particles, and greatly improve the dust removal efficiency. The dust removal efficiency of the traditional cyclone dust collector is generally 50-60%, and the dust removal efficiency of the utility model can reach more than 90%. At the same time, a thin liquid film is formed on the inner surface of the dust collector, which can also cool high-temperature particles in the dust-containing gas. When the dust gas is gas, it can prevent the gas explosion caused by high-temperature particles; in addition, a thin liquid film is formed on the inner surface of the dust collector, which can also protect the dust collector body from the impact of high-temperature dust-containing gas and form an effective cooling for the dust collector body. , Finally, the utility model does not use high-temperature-resistant metal materials, and the manufacturing cost is relatively low.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a sectional view of A-A in Fig. 1 .

In the figure, piece 1 is the air outlet; piece 2 is the refractory material layer; piece 3 is the porous medium material layer; piece 4 is the groove-shaped cooling water channel; piece 5 is the shell; piece 6 is the flow guide device; piece 7 is the cooling water System valve; item 8 is the air inlet; item 9 is the separation area; item 10 is the ash discharge port; item 11 is the ash discharge port valve.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in detail.

As shown in Figures 1 and 2, a cyclone dust collector includes a housing 5 provided with an air inlet 8 and an air outlet 1, wherein the air inlet is arranged tangentially along the housing, and the air outlet is located on the axis of the housing. That is, tangential air intake and center air exit. The porous medium material layer 3 is installed and fixed on the shell 5, and the side of the porous medium material layer 3 close to the shell is processed with a groove-shaped cooling water channel 4, and cooling water passes through the groove-shaped cooling water channel. Cooling water seeps out from the surface of the porous medium material layer through capillary force, keeping the inner surface of the porous medium material layer in a wet state all the time. When the cyclone dust collector is dealing with high-temperature dusty gas, the gas enters the interior of the dust collector along the tangential direction from the air inlet. On the one hand, under the action of centrifugal force, the high-temperature solid particles are thrown towards the wall of the cyclone dust collector, fully contacting the cooling water on the surface of the porous medium material layer of the wall, and through the evaporation heat exchange between the high-temperature solid particles and the cooling water, to achieve The purpose of capturing dust particles and reducing the temperature of high-temperature particles is that the captured particles enter the ash collecting hopper along the conical section under the action of gravity; the partially vaporized water vapor enters the cyclone dust collector, which appropriately increases the concentration of particles in the flue gas. Humidity improves the coagulation ability of fine particles, which helps to improve the dust removal efficiency of particles, especially the dust removal efficiency of fine dust. During this process, the amount of cooling water can be adjusted through the cooling water system valve 7 to prevent the inner surface of the porous medium material layer from being too wet or too dry. On the other hand, the purified high-temperature airflow rotates upward after encountering the guide device 6, and is discharged from the dust collector through the air outlet 1.

Claims (5)

1. A cyclone dust collector, comprising a housing and an air inlet and an air outlet arranged on the housing, is characterized in that: the inner surface of the separation zone of the housing is provided with a porous medium material layer, and the inside of the porous medium material layer is provided with The groove-shaped cooling water channel, the cooling water seeps out from the inside of the porous medium material layer to keep the surface of the porous medium material layer wet. 2. The cyclone dust collector according to claim 1, characterized in that: the air inlet, the air outlet and the lower part of the dust collector are lined with a refractory material layer. 3. The cyclone dust collector according to claim 1 or 2, characterized in that: the dust discharge port is provided at the bottom of the dust collector, and a flow guiding device is provided at the upper part of the dust discharge port. 4. The cyclone dust collector according to claim 3, characterized in that: the groove-shaped cooling water channel is arranged on a side close to the shell. 5. The cyclone dust collector according to claim 4, characterized in that valves are arranged on the pipes connecting the trough-type cooling water channels.

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