Electrostatic precipitator apparatus and method
US3988127A · kind A · utility
Inventor
Key dates
| Filing date | May 7, 1975 |
| Grant date | Oct 26, 1976 |
| Priority date | — |
| Expiry date | May 7, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03C3/74
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Each precipitation chamber of an electrostatic precipitator has an airlock provided by closable damper means and located in the path of the gas flow through the chamber between the inlet plenum and outlet plenum of the precipitator. Apparatus is provided in association with each airlock for establishing a gas pressure differential between the airlock and the rest of the chamber so that essentially no uncleaned gas can pass by leakage through the airlock to the precipitator outlet. The airlock is established during normal precipitator cleaning (rapping), thereby enhancing the effectiveness of cleaning by stopping gas flow through the chamber during cleaning, increasing particulate fall into the hoppers and permitting optimization of rapping intensity, rate and frequency. Precipitator efficiency is increased significantly by preventing outflow of re-entrained particulates during cleaning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.