Low-temperature carbonization/combustion process and low-temperature carbonization/combustion plant with pressure control

US5497712A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Karl May · Bad Vilbel, DE
• Hartmut Herm · Dreieich, DE
• Reinhard Mattke · Obertshausen, DE

Key dates

• Filing date: Oct 12, 1993
• Grant date: Mar 12, 1996
• Expiry date: Oct 12, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E50/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A low-temperature carbonization/combustion process is carried out in a low-temperature carbonization/combustion plant with pressure control that includes a pyrolysis drum to which waste is delivered. Low-temperature carbonization gas generated there is passed to a combustion chamber. Flue gas produced there is fed through a cooling device and a gas compressor to a stack. With the aid of a control device, the speed of rotation of the gas compressor is controlled in relation to the pressure in the gas path between the pyrolysis drum and the gas compressor in such a way that when the pressure decreases, the speed of rotation is decreased. Preferably, an additional gas compressor is connected in series with the gas compressor and the speed of rotation of the additional gas compressor is appropriately controlled. An additional pyrolysis drum can also be provided.