Method and arrangement for cleansing a flow of hot contaminated gas
US4750916A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 4, 1987 |
| Grant date | Jun 14, 1988 |
| Priority date | — |
| Expiry date | Feb 4, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D50/60
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a method and an arrangement for cleansing a flow of hot contaminated gas (1), in which the contaminants comprise both dust particles and gaseous condensable contaminants. The gas is cooled in a heat exchanger in a first stage (2) to a temperature which lies above the temperature at which the gaseous contaminants begin to pass into their respective liquid phases. The gas is then cooled further, in a second stage (4), by mixing the gas with a colder gas flow (5), so as to bring the temperature of the gas to a level suitable for subsequent extraction of contaminants in a first dust separator (3, 3a), while condensing part of the gaseous contaminants present. Condensed contaminants are bound by adsorption and/or absorption to dust particles collected in the first dust separator (3, 3a).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.