Mitsui Petrochemical Industries, Ltd.

Mitsui Engineering and Shipbuilding Company Limited

Noriaki Nakase

Masao Koyama

Toshiaki Masaoka

Masahiro Inada

Kenji Takahashi

Tohoru Abiko

A method of burning a combustible solid residue from a chemical plant, which comprises feeding a slurry of combustible solid residues in an oil, the amount of the oil being at least 0.5 part by weight per part by weight of the combustible solid residues, into a burner in a combustion furnace comprised of a main combustion chamber having the burner in its arch, a secondary combustion chamber formed in the lower portion of the main combustion chamber, and a flue gas duct provided beneath and following the secondary combustion chamber, burning the residue in the main combustion chamber, conducting the combustion gas into the secondary combustion chamber, and allowing it to reside at a temperature 800.degree. to 1000.degree. C. for at least 0.5 second.

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Yamaguchi, Japan

Tohoru Abiko