Method and apparatus for removing vapors and aerosols from gases produced in a gasification plant

US4049570A · kind A · utility

Assignee

• Dr. C. Otto & Comp. GmbH

Inventors

• Paul Gernhardt · Chesapeake, US
• Wolfgang Grams · Herne, DE
• Siegfried Pohl · Oberschleißheim, DE
• Wilhelm Danguillier

Key dates

• Filing date: Aug 4, 1975
• Grant date: Sep 20, 1977
• Expiry date: Aug 4, 1995

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/129
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The high temperature gasification of solid fuel or mixtures of solid and liquid fuels is carried out by a method and apparatus wherein the gasified product from a high temperature gasification chamber having a slag bath therein is fed into a first dust collector. Gases, including vapors or aerosols, are fed from the dust collector into a waste heat boiler to reduce the temperature of the gases down to about 250.degree. C. The solids which essentially include flue coke are discharged from the dust collector into a separate heat exchanger wherein the temperature of the solids is reduced down to about 200.degree. C. The cooled solids and the cooled gases are fed into an absorption chamber wherein for a period of 1 to 10 seconds, the aerosols are absorbed into the flue coke. The absorption chamber is connected to a second dust collector that separates the gases from the flue coke having the absorbed aerosols. The purified gases are then discharged from the second dust collector and the flue coke with the absorbed aerosols is returned to the slag bath in the gasification chamber.