CN1121908C - Dust-removing device with particles coagulator - Google Patents

Abstract

A dust collector with a particle agglomerator, comprising a particle agglomerator composed of an air inlet passage connected together in sequence, a discharge agglomeration section, and an air outlet passage, the discharge agglomeration section includes a discharge passage and a mixing and agglomeration passage, the discharge passage Including at least one group of discharge channel pairs, each pair of discharge channels is composed of two independent discharge channels separated from each other and arranged side by side, each of the independent discharge channels is provided with at least one discharge electrode with the same polarity, two The polarities of the discharge electrodes in each of the independent discharge channels are opposite, the voltage of the discharge electrodes is at least 20KV, the wall of the discharge channel is grounded, and the air outlet channel is connected to the inlet of the cyclone dust collector or bag filter. The dust collector has a simple structure and can be used to purify various dust-containing gases, and the dust removal efficiency can reach 99.99%.

Description

Dust collector with particle agglomerator

technical field

This invention relates generally to dust collectors, and more particularly to dust collectors with particle accumulation means.

Background technique

At present, there are many types of dust collectors used by people, such as cyclone dust collectors, bag dust collectors, electrostatic precipitators, etc. The cyclone dust collector has a simple structure and low price, and can be used in special environments such as high temperature and high pressure, but its dust removal efficiency is low, and it cannot separate fine particles, such as particles below 5 μm; the anti-condensation performance and heat resistance of the bag filter bag are poor ; Electrostatic precipitators are expensive and not suitable for high temperature and high pressure environments. In order to remove fine dust, three electric fields and four electric fields are often used, resulting in larger volume and heavier weight. What Japanese Patent Clear 55-157348 discloses is exactly such a kind of electrostatic precipitator.

content of invention

The purpose of the present invention is to overcome the above shortcomings and provide a dust collector with a simple structure, high dust removal efficiency, low price and a particle agglomerator.

The dust collector with particle agglomerator of the present invention comprises a particle agglomerator composed of an air inlet passage connected together in sequence, a discharge agglomeration section and an air outlet passage, the discharge agglomeration section includes a discharge passage and a mixing agglomeration passage, and the discharge passage Including at least one group of discharge channel pairs, each pair of discharge channels is composed of two independent discharge channels separated from each other and arranged side by side, each of the independent discharge channels is provided with at least one discharge electrode with the same polarity, two The polarities of the discharge electrodes in each of the independent discharge channels are opposite, the voltage of the discharge electrodes is at least 20KV, the wall of the discharge channel is grounded, and the air outlet channel is connected to the inlet of the cyclone dust collector or bag filter.

In the dust remover with particle agglomerator of the present invention, the discharge channel groups are several sets of discharge channel pairs connected in parallel and/or in series.

In the dust remover with particle agglomerator of the present invention, the discharge agglomeration section is connected with the air inlet passage and the air outlet passage through transition passages.

In the dust remover with particle agglomerator of the present invention, each pair of discharge channels is separated by a separator.

Compared with the known technology, the dust collector with particle agglomerator of the present invention has no dust collection pole, simple structure and low cost, because a particle agglomerator is installed before the ordinary dust collector, so that the dust particles in the dusty gas Firstly, the positive and negative charges are respectively charged, and then the dust particles with positive and negative charges are agglomerated in the space of the mixing and agglomeration channel of the particle agglomerator under the action of static electricity, and the dust-containing gas carrying the dust particles with a larger particle size is then agglomerated. Separation by ordinary dust collectors can efficiently remove almost all the dust in the dusty gas, and the dust removal efficiency can reach 99.99%.

Other details and features of the dust collector with particle agglomerator of the present invention can be clearly understood by reading the embodiments described in detail below in conjunction with the accompanying drawings, wherein:

Description of drawings

Fig. 1 is the structural representation of the cyclone dust collector with particle agglomerator of the present invention;

Fig. 2 is a schematic diagram of another structure of the cyclone dust collector with particle agglomerator of the present invention.

Detailed ways

Refer to Figure 1. Fig. 1 shows an embodiment of the cyclone dust collector with particle agglomerator of the present invention. It consists of particle agglomerator 1 and cyclone dust collector 2 . The particle agglomerator 1 is composed of an air inlet channel 3 , a transition channel 4 , a pair of discharge channels 5 and 6 , a transition channel 7 , a mixing and coagulation channel 8 , and an air outlet channel 9 connected in series. Each of the discharge channels 5 and 6 has a positive discharge electrode 10 and a negative discharge electrode 11 arranged laterally, and the walls of the discharge channels 5 and 6 should be well grounded. Multiple electrodes with the same polarity can be set in each discharge channel, and the electrodes can be arranged horizontally or vertically. The voltage of the discharge electrode should be above 20KV to ensure that the dust in the dusty gas has sufficient charge. Obviously, the discharge electrodes 10, 11 should be well insulated from the walls of the discharge channel.

When in use, the dust-laden gas enters from the inlet of the air intake passage 3, and is divided into two paths through the transition passage 4 to enter the positive and negative discharge passages 5 and 6 respectively. In the positive discharge electric field of the discharge channel 5, most of the dust particles are positively charged; in the negative discharge electric field of the discharge channel 6, most of the dust particles are negatively charged. The two airflows respectively carrying positively and negatively charged dust particles flow into the mixing and agglomerating channel 8 through the transition channel 7 . In the mixing and condensing channel 8, the positively and negatively charged dust particles condense and become larger under the action of electrostatic force, and the dust-containing gas carrying the enlarged dust particles enters the cyclone dust collector 2 through the air outlet channel 9 to separate the dust particles. , so as to realize a separation process.

Depending on the dust properties and dispersion and the requirements for dust removal efficiency, the above-mentioned particle agglomerators 1 can be connected in series, that is, behind the mixing and agglomeration channel 8, a pair of discharge channels 5, 6. The discharge channels 5 and 6 are connected to the mixing and condensing channel 8 through the transition channel 7... so that all the fine dust can be condensed into particles large enough to be separated by the cyclone separator.

If the air volume to be processed is large, several particle agglomerators 1 shown in FIG. 1 can be connected in parallel. It can also be connected in series after being connected in parallel, and then separated by a cyclone dust collector to improve the efficiency of dust removal.

The cleaning of the discharge electrode of the cyclone dust collector with particle agglomerator of the present invention can be realized by rapping or strong sound.

Refer to Figure 2. Fig. 2 is a structural schematic diagram of another embodiment of the cyclone dust collector with a particle agglomerator of the present invention. The embodiment shown in Figure 2 differs from the embodiment shown in Figure 1 in that its discharge channels 12, 13 are separated in a total discharge channel 15 with a grounded partition 14, and the air intake channel 16 is cone-shaped. Shaped, directly connected to the total discharge channel 15, eliminating the transition channel, the total discharge channel 15 is connected to the outlet channel 18 through the mixing and condensation channel 17, and the outlet of the outlet channel 18 is connected to the inlet of the cyclone dust collector 2. This embodiment is simpler in structure than the dust collector with particle agglomerator shown in FIG. 1 . The discharge coalescence section composed of the discharge channel 15 and the mixing coalescence channel 17 can be connected in parallel and/or in series several times.

The dust remover in the dust remover with particle agglomerator of the present invention adopts a cyclone dust remover, has a simple structure, is suitable for high temperature and high pressure environment, and can also use a bag type dust remover or an ordinary electrostatic dust remover. This will reduce the requirements for the filtration accuracy of the filter bag of the bag filter and reduce the cost. For the electrostatic precipitator, it can reduce the number of its electric field, simplify its structure, reduce the floor area, and reduce the cost.

Claims (4)

1. A dust collector with a particle agglomerator, comprising a particle agglomerator composed of an air inlet channel connected together in sequence, a discharge condensing section, and an air outlet channel. The discharge condensing section includes a discharge channel and a mixing condensing channel, and its characteristics The discharge channel includes at least one group of discharge channel pairs, each pair of discharge channels is composed of two independent discharge channels separated from each other and arranged side by side, and each of the independent discharge channels is provided with at least one of the same polarity The discharge electrodes in the two independent discharge channels have opposite polarities, the voltage of the discharge electrodes is at least 20KV, the wall of the discharge channel is grounded, and the air outlet channel is connected to the cyclone dust collector or bag dust collector connected to the inlet of the device. 2. The dust remover with particle agglomerator according to claim 1, characterized in that the discharge channel groups are several sets of discharge channel pairs connected in parallel and/or in series. 3. The dust remover with particle agglomerator according to claim 2, characterized in that the discharge agglomeration section is connected with the air inlet passage and the air outlet passage through transition passages. 4. The dust remover with particle agglomerator according to any one of claims 1 to 3, characterized in that each pair of discharge channels is separated by a partition.

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