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Patent Searching and Data


Title:
METHOD FOR REMOVING CARBON DIOXIDE IN EXHAUST GAS
Document Type and Number:
Japanese Patent JPH07136457
Kind Code:
A
Abstract:

PURPOSE: To remove CO2 efficiently in a simple method by contacting the CO2 contained exhaust gas with highly active calcium oxide porous particles having a specified specific surface area and a specified particle size at temperature within a specified range.

CONSTITUTION: Highly active calcium oxide porous particles are obtained which is characterized by the specific surface area of 5-60m2/g or more preferably 10-50m2/g, and the diameter 1-10mm, preferably 3-6mm. In order to come in contact with the porous particles, exhaust gas is passed through an apparatus composed of a cylindrical treatment tube which is filled with the particles. A net or glass wool is placed above and under the particles to hold them. A part of the column which is filled with the particles is heated by an appropriate means such as electric heating, infrared heating, and high-frequency heating to heat the particles at 400-700°C preferably 500-650°C. In this way, the CO2 in exhaust gas can be removed efficiently for a long period of time.


Inventors:
SUZUKI KO
Application Number:
JP28846793A
Publication Date:
May 30, 1995
Filing Date:
November 17, 1993
Export Citation:
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Assignee:
SUZUKI KOGYO KK
International Classes:
B01D53/34; B01D53/62; (IPC1-7): B01D53/62; B01D53/34
Attorney, Agent or Firm:
Agata Akira (1 person outside)