Electrostatic gun for injection of an electrostatically charged sorbent into a polluted gas stream
US5591412A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1995 |
| Grant date | Jan 7, 1997 |
| Priority date | — |
| Expiry date | Apr 26, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03C3/38
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An electrostatic gun for electrostatically charging and injecting sorbent particles into a flue gas stream to contact, and electrostatically charge, pollution particles in that flue gas stream. The electrostatic gun is for inclusion as a component of an apparatus for the remediation of pollution particles from a flue gas stream whereafter the clean gas flow is vented to atmosphere. The electrostatic gun receives laminar flow of a selected sorbent material and charges, either positively or negatively, the surface of each sorbent particle in that flow. To provide electrostatic charging to the individual particles, the flow is directed through a straight barrel of a housing of the electrostatic gun to pass alongside a charging wand that is centered axially in the straight barrel. The charging wand is connected to receive a voltage from a high voltage power supply to produce a corona discharge wherethrough the sorbent materials pass to electrostatically charge each sorbent particle. The invention includes a corona enhancement arrangement in the form of a grounding ring or opposing grounding plates arranged in the barrel and spaced apart from the charging wand, that carry a charge that …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.