JPS61164665A - Electric precipitator - Google Patents

Abstract

PURPOSE:To reduce the re-scattering amount of dust without enlarging the allowance ratio of an apparatus size, in a small scale dry electric precipitator, by dividing a dust collection part into an upstream part and a downstream part and providing an independent hammering apparatus to each dust collection part. CONSTITUTION:The dust collection chamber 9 of an electric precipitator (hereinbelow referred to as EP) is constituted so as to divide the dust collection electrode system into an upstream dust collection part A and a downstream dust collection part B to form two chambers in parallel and the number of the dust collection plates 2 of the downstream dust collection part B relatively little in a dust collection amount are less than that of the dust collection plates 1 in the upstream dust collection part A. When EP is operated, dust-containing gas introduced into the dust collection chamber 9 reaches the dust collection plates 1 of the upstream dust collection part A where dust is collected. During the operation of EP, a hammer 3 is always intermittently operated. because the dust rescattered by hammering is collected by the dust collection plates 2 of the downstream dust collection part B, the hammer 4 of the downstream part is operated after EP was stopped.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to a small electrostatic precipitator (hereinafter abbreviated as GP) that reduces the re-scattering of vizine to the outlet and improves the dust collection efficiency. Contains information on EP that can be used in large-scale dry BP, etc.

[Conventional technology]

For example, in conventional small-scale dry-type EP that performs batch operation (8 hours/day operation), the dust collection chamber is usually configured in the form of one chamber, and the dust collection part (dust collection seed thread) therein is hammered. A hammering device is provided. With such a device, vizine is re-splattered when the dust collecting plate is hammered.

[Problem that the invention seeks to solve]

The dust collection performance of GP is greatly influenced by the amount of Visine re-splattered when the dust collection plate is hammered. Therefore, in order to reduce the amount of re-scattering of Bi-9/ and improve dust collection performance, conventional dry methods for small-scale use were used, which required cost reduction, such as increasing the margin (dust collection area) for EP size. There was a problem that it was difficult to apply to KP.

The present invention was proposed to solve the above-mentioned conventional problems, and it is possible to reduce the amount of vizine re-splattered and significantly improve dust collection efficiency without increasing the margin of EP size. The purpose is to provide gp.

[Means for solving problems]

The IP according to the present invention is characterized in that the gpO dust collection chamber is divided into an upstream part and a downstream part, and nine dust collecting parts are provided, and an independent hammering device is provided in each of the upstream part and downstream part. That is.

[Effect]

According to the present invention, the dust collection section is divided into two sections, an upstream section and a downstream section, and each section is provided with a separate hammering device. During this period, the vizine re-dispersed by the hammering in the upstream area is collected again in the downstream area without hammering in the downstream area.
In addition, since there is less adhering vizine in the downstream area, the dust collection section is not hammered during EP operation, but is hammered after EP operation is stopped. The above-mentioned conventional problems can be solved by reducing the amount of scattering and greatly improving dust collection efficiency.

〔Example〕

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The figure is a diagram showing the configuration of essential parts of an embodiment of the present invention, and in the figure, 1 and 2 are dust collecting plates (dust collecting poles), respectively.
, 3 and 4 are the respective slots, 5 is the hanging frame, 6 and 7 are each the hammering rods, 8 is the mounting bracket, and 9 is the dust collection chamber of the BP.

As shown in the figure, the EPO dust collection chamber 9 is located in the upstream dust collection section A.
and a downstream dust collection section B, and each of these prefectural dust collection sections A and B has dust collection plates 1 and 2, respectively.
It is suspended from a shared suspension rack 5 via a mounting bracket 8.

The lower portions of each of these prefectural boards 1 and 2 are attached to independent hammering rods 6 and 7 by bolting or the like. At each end of each independent hammering rod 6 and 7,
Each independent hammer 3 and 4 is provided, and each independent hammer bar 6 and 7 is provided with each independent hammer 3 and 4.
Each prefecture area A is hammered independently.
and B are configured as independent hammering devices. As shown in the figure, the dust collection chamber 9 of the GP is a one-chamber type, but its dust collection seed yarn is divided into an upstream dust collection section A and a downstream dust collection section B, so that it is similar to a two-chamber type. In addition, the number of dust collecting plates 2 in the downstream dust collecting section B, which has a smaller amount of comparative fishing dust, is smaller than the number of dust collecting plates 1 in the upstream dust collecting section A.

The operation of the above embodiment of the present invention will be explained.

In the figure, when the EP is operated, the dust-containing gas introduced into the dust collection chamber 9 of the gP first collects its vizine on the dust collection plate 1 of the dust collection section A in the upstream section. While the HP is in operation, the hammer 3 performs normal hammering (intermittent hammering). The vizine re-dispersed by the hammering is transferred to the downstream dust collection section B.
Since the dust is collected again by the dust collection plate 2, the dust collection efficiency is greatly improved.

In this case, by activating the downstream hammer 4 after the EP has stopped and no dust-containing gas is introduced, re-scattering of vizine can be completely eliminated.

In general, the collection rate in a two-chamber EP is said to be 90 cm in the front chamber and 10 cm in the rear chamber, assuming the amount of inlet vizine is 100 cm and the collection efficiency is 100 cm. The dust collection plate in the front room is hammered once every hour.

From the above, when a 1-hour cycle is used with 90% collection, the collection rate in the rear chamber is 10 inches, so the hammering cycle can last up to 9 hours. Therefore, gP selection reincarnation (8 hours/day operation)
This means that the operation can be carried out without hammering. Further, by reducing the number of dust collecting plates in the rear chamber to a small number (one striften is also acceptable), the amount of vizine adhering to the plate will be reduced, making it possible to operate without hammering for a longer period of time.

〔Effect of the invention〕

According to the above, according to the present invention, the margin ratio of EP size is increased by dividing the dust collecting section into two parts, an upstream part and a downstream part, and providing an independent hammering device in each prefectural dust collecting part. It is possible to achieve excellent effects such as reducing the amount of vizine re-splattered and greatly improving dust collection efficiency.

[Brief explanation of the drawing]

The figure is a diagram showing the configuration of essential parts of an embodiment of the present invention. 1.2...Dust collection plate, 3,4...Hammer, 6,1.
... Hammering rod, 9... Dust collection chamber, A, B... Dust collection section. Applicant Sub-Agent Patent Attorney Suzue TakehikoΔ
B

Claims (1)

[Claims] The dust collection chamber of the electrostatic precipitator is provided with a dust collection section divided into an upstream section and a downstream section, and an independent hammering device is provided in each of the upstream and downstream dust collection sections. Electrostatic precipitator.