Electrostatic precipitator apparatus

Patent metadata

Field	Value
Publication number	US-11524305-B2
Application number	US-202016855978-A
Country	US
Kind code	B2
Filing date	Apr 22, 2020
Priority date	May 9, 2019
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

Disclosed herein is an electrostatic precipitator apparatus that includes a housing having an inlet, into which gas is introduced, and an outlet from which the gas is discharged, and a collection module installed in the housing. The collection module includes a plurality of discharge electrodes, to which a voltage is applied, and a plurality of collection electrodes grounded and disposed between the discharge electrodes. The apparatus further comprises a washing water feeder to spray washing water to the collection module, and a washing water treatment device disposed beneath the collection module to accommodate the washing water dropped from the collection module.

First claim

What is claimed is:

1. An electrostatic precipitator apparatus comprising:
a housing having an inlet, into which gas is introduced, and an outlet from which the gas is discharged;
a collection module installed in the housing and comprising a plurality of discharge electrodes, to which a voltage is applied, and a plurality of collection electrodes disposed between the plurality of discharge electrodes, the plurality of collection electrodes coupled to a ground;
a washing water feeder configured to spray washing water to the collection module; and
a washing water treatment device disposed beneath the collection module to accommodate the washing water dropped from the collection module, the washing water treatment device comprising:
a reservoir configured to accommodate the washing water;
an adsorption belt in an endless-track form;
a roller connected to the adsorption belt to move the adsorption belt; and
a scraper configured to scrape off dust attached on the adsorption belt to separate the dust from the adsorption belt.

2. The electrostatic precipitator apparatus according to claim 1 , wherein the adsorption belt is in a mesh form.

3. The electrostatic precipitator apparatus according to claim 1 , wherein a portion of the adsorption belt is submerged in the washing water and the other portion of the adsorption belt is positioned above the washing water.

4. The electrostatic precipitator apparatus according to claim 1 , wherein the scraper is installed vertically on the bottom of the reservoir and a mass of dust separated from the adsorption belt is accumulated on the bottom of the reservoir.

5. The electrostatic precipitator apparatus according to claim 4 , wherein the scraper comprises a support rod installed vertically on the bottom of the reservoir and an elastic tip protruding upward from the support rod.

6. The electrostatic precipitator apparatus according to claim 1 , wherein the adsorption belt protrudes outward from the housing, the scraper is installed outside the housing, and a dust separation container is installed beneath the scraper to accommodate the dust separated from the adsorption belt.

7. The electrostatic precipitator apparatus according to claim 1 , wherein: the housing is provided therein with a blocking member configured to separate a space, in which the collection module is installed, from a space in which the washing water treatment device is installed; and
the blocking member comprises a plurality of blocking plates and rotary columns coupled to the respective blocking plates, and is rotatably installed in the housing.

8. The electrostatic precipitator apparatus according to claim 1 , wherein the electrostatic precipitator apparatus is a platform electrostatic precipitator apparatus installed between platforms, and guide vanes are installed in the respective inlet and outlet to guide inflow and outflow of air.

9. The electrostatic precipitator apparatus according to claim 8 , wherein the housing is installed between two neighboring rails so that the air is introduced into and discharged from the housing by means of wind generated when a train moves.

10. The electrostatic precipitator apparatus according to claim 8 , further comprising a controller connected to the guide vanes to control rotation of the guide vanes, wherein when a train approaches toward the inlet, the controller, based on the direction of movement of the train, controls an outer end of the guide vane, installed in the inlet, to face rearward while controlling an outer end of the guide vane, installed in the outlet, to face forward.

11. The electrostatic precipitator apparatus according to claim 1 , wherein the scraper comprises a rotary rod and a plurality of paddles protruding from an outer peripheral surface of the rotary rod, the paddles being spaced apart from each other in a circumferential direction of the rotary rod.

12. The electrostatic precipitator apparatus according to claim 1 , wherein: the washing water treatment device comprises two support rollers and first and second diversion rollers disposed between the support rollers, the first diversion roller being configured to support a lower end of the adsorption belt to move upward, the second division roller being configured to support the lower end of the adsorption belt to move downward; and
a blocking wall is installed in the reservoir to separate a space, in which the scraper is present, from a remaining space.

13. The electrostatic precipitator apparatus according to claim 12 , wherein the first diversion roller supports the adsorption belt to be positioned above an upper end of the blocking wall, and the second diversion roller supports the adsorption belt to be positioned beneath the upper end of the blocking wall.

14. The electrostatic precipitator apparatus according to claim 13 , wherein the scraper abuts on the adsorption belt between the second diversion roller and an associated one of the support rollers.

Assignees

• Doosan Enerbility Co Ltd

Inventors

• Lee Jin Woon
• Lee Sang Rin
• Hwang Jae Dong
• Moon Sang Chul

Classifications

• B03C3/88

  Cleaning-out collected particles · CPC title

• B03C3/70

  insulating in electric separators (B03C3/53 takes precedence) · CPC title

• B03C3/16 Primary

  wet type · CPC title

• B03C3/78 Primary

  by washing · CPC title

• B03C2201/10

  Ionising electrode with two or more serrated ends or sides · CPC title