CN101721175B - A bag-type dust collector with a new air intake method and air distribution structure - Google Patents

Abstract

The invention relates to a bag type dust collector with a novel air inlet mode and an air flow distribution structure, which comprises a dust-air inlet, a gravity separation area, an ash bucket, a filter bag area, an outer wall plate, an ash cleaning component, a clean air outlet and a pattern plate. The labyrinth diversion separation plate group consists of two groups of staggered and buckled mutually-meshed shaping plates which can be C-shaped, V-shaped, or [ shaped ]. The invention has the beneficial effects that: the dust-containing airflow forms a sudden expansion state after entering the dust remover, and is separated again through the labyrinth guide plate group, a downward and upward gas movement trend is formed in the filter bag area, so that the dust removing device is beneficial to removing the dust in the filter bag, is suitable for various gas purification, is particularly suitable for filtering the dust with high concentration, large particles and strong grinding performance, and can prolong the service life of the dust removing filter bag by over 1/2 compared with the conventional dust remover.

Description

A bag-type dust collector with a new air intake method and air distribution structure

technical field

The invention relates to the field of bag-type dust collectors, in particular to a bag-type dust collector with a novel air intake mode and airflow distribution structure.

Background technique

In recent years, due to the development of the steel and smelting industry, domestic and international coke consumption has been increasing, and the coking industry has developed rapidly. As an environmental protection industry, CDQ technology has also been adopted by most coking plants. The expansion of coke oven production requires more and more stringent environmental protection requirements. Many dust removal systems have been added to coke oven production, coke CDQ, coke storage and transfer, and more and more bag filters have been used to extend the service life of bag filters and ensure The safe and effective operation of the dust removal system is particularly important.

Coke dust has a strong abrasiveness. Due to the uneven distribution of the inlet airflow of the currently used dust collector, the phenomenon of high-speed airflow carrying dust and washing the bag often occurs, resulting in partial damage to the bag, which not only shortens the service life of the bag, but also brings safety to production. In this regard, the application of the airflow distribution method of the bag filter of the present invention can be widely used in the bag filter, so that the air flow entering the filter bag room has no large particles, and can be used for various gas purification, especially for high concentration, Large particles and strong abrasive dust are filtered to avoid high-speed airflow carrying dust to wash the bag, causing partial damage to the bag, prolonging the overall service life of the bag filter bag, and providing favorable conditions for safe production.

Contents of the invention

The purpose of the present invention is to provide a bag filter with a new air intake mode and air distribution structure, which can be widely used in various gas purification, especially suitable for dust filtration with high concentration, large particles, and strong abrasiveness. Avoid the generation of high-speed airflow carrying dust to wash the bag, causing partial damage to the bag, and greatly improving the service life of the dust filter bag.

In order to achieve the above object, the present invention adopts the following technical solutions:

A bag-type dust collector with a new air intake method and air distribution structure, including dust gas inlet, gravity separation area, ash hopper, filter bag area, outer wall plate, dust cleaning component, clean air outlet, flower plate, its characteristics That is, a labyrinth diversion separation plate group is installed on the dust gas inlet side, and the labyrinth diversion separation plate group is located inside the outer wall of the dust collector and outside the filter bag area of the dust collector.

The labyrinth diversion separation plate group is composed of two sets of plates interlocked by two sets of misplaced butt joints. There are airflow passages between the formworks, and the gap between the airflow passages is 10-100mm.

The described labyrinth deflecting and separating plate group is C-shaped, or V-shaped, or [-shaped, or [-shaped.

The dust gas inlet is arranged at the lower half of the middle box body, and its air intake direction is vertically downward, or horizontally, or sideways.

Compared with the prior art, the beneficial effect of the present invention is that a labyrinth-type guide and separation plate group is installed on the side of the dust gas inlet, so that the dust-laden air flow enters the dust collector to form a sudden expansion state, which has a certain speed and energy. Dust particles fall directly into the ash hopper, about 1/5-2/5 of the gas enters the filter bag area from the lower ash hopper, and is discharged after being filtered, and the remaining 4/5-3/5 of the gas carries fine dust and diffuses to the All the deflector surfaces on the air inlet side of the middle box are separated again by the labyrinth deflector group. Only the fine dust can enter the filter bag area evenly with the air flow, and a gas movement trend from bottom to top is formed in the filter bag area, which is beneficial to the removal of the filter bag. Bag dust is suitable for all kinds of gas purification, especially for high concentration, large particles, and strong abrasive dust filtration, which can increase the service life of dust filter bags by more than 1/2 compared with conventional dust collectors.

Description of drawings

Figure 1 is a schematic diagram of the airflow distribution structure of the bag filter;

Fig. 2 is a C-type labyrinth diversion separation plate group;

Fig. 3 is a V-shaped labyrinth diversion separation plate group;

Fig. 4 is [type labyrinth diversion separation plate group;

Fig. 5 is [type labyrinth diversion separation plate group.

Detailed ways

The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

See Figure 1, a bag filter with a new air intake method and air distribution structure, including dust gas inlet 1, gravity separation area 2, labyrinth diversion separation plate group 3, ash hopper 4, filter bag area 5 , outer wall plate 6, dust cleaning assembly 7, clean air outlet 8, flower plate 9, labyrinth diversion separation plate group 3 is vertically installed on the side of the dust gas inlet 1 of the dust collector, and is located inside the outer wall plate 6 of the dust collector. Outside of filter bag area 5.

The labyrinth deflector separation plate group 3 is composed of two sets of dislocated butt joints interlocking with each other. The templates can be C-shaped (Fig. 2), or V-shaped (Fig. 3), or [-shaped (Fig. 4), or 〔Type (Figure 5) type plate, there is an airflow channel between the two groups of dislocation butt joint interlocking plates. To the flower plate 9 on the upper part of the dust collector, the minimum height that can be extended is half of the height between the dust gas inlet 1 of the dust collector and the flower plate 9 on the upper part of the dust collector. The height selection is based on the particle size distribution of the dust-containing gas. If the proportion of fine particles is large, the height of the labyrinth diversion separation plate group 3 should be higher to increase the trapping area. If the proportion of coarse particles is large, the height can be shorter.

The dust gas inlet 1 of the dust collector is arranged in the lower half of the middle box, and its air intake direction can be vertically downward, or horizontal or side air intake.

When the bag filter is working, the air flow enters the gravity separation area 2 from the dust gas inlet 1 at the lower part of the middle box of the dust removal filter room. After the gas enters, it forms a sudden expansion state, and the dust particles with a certain speed and energy fall directly into the ash hopper. 4. About 1/5-2/5 of the gas enters the filter bag area 5 from the lower ash hopper 4, and is discharged after being filtered. The remaining 4/5-3/5 of the gas carries fine dust and diffuses into the middle box for further discharge. All guide surfaces on the gas side are separated again by the labyrinth deflector group 3, only fine dust can enter the filter bag area 5 evenly with the air flow, and the filtered clean gas is discharged from the clean gas outlet 8, and is placed between the filter bag area 5 A gas movement trend from bottom to top is formed in between, which is beneficial to remove the dust in the filter bag. When the dust accumulates to a certain extent, operate the dust removal component 7 to unload the dust into the ash hopper 4.

Claims (2)

1. A bag-type dust collector with a new air intake method and airflow distribution structure, including dust gas inlet, gravity separation area, ash hopper, filter bag area, outer wall plate, ash cleaning component, clean air outlet, flower plate, It is characterized in that a labyrinth diversion separation plate group is installed on the dust gas inlet side, and the labyrinth diversion separation plate group is located inside the outer wall plate of the dust collector and outside the filter bag area of the dust collector; The labyrinth diversion separation plate set is composed of two sets of dislocation butt joints interlocking with each other. There are airflow channels between the templates, and the gap between the airflow channels is 10-100mm; the dust gas inlet is arranged at The lower half of the middle box has an air intake direction that is vertically downward, or horizontally, or laterally. 2. A bag-type dust collector with a new air intake mode and airflow distribution structure according to claim 1, wherein the pattern plate of the labyrinth deflecting and separating plate group is C-type or V-type. Type, or [type, or [type.

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