Gas separation: processes – Solid sorption – And liquid contact
Patent
1998-03-17
2000-03-28
Smith, Duane S.
Gas separation: processes
Solid sorption
And liquid contact
95219, 95234, 96270, 96282, 96303, 96314, 96319, B01D 4706, B01D 5310
Patent
active
060426365
ABSTRACT:
A method and apparatus of cooling incinerator exhaust gas for a cleaning treatment of high temperature exhaust gas discharged from an incinerator of refuse and/or waste in a post-step are provided. A spray cooling chamber includes a chamber having a lower end portion formed into a nearly cylindrical shape of an inverted conical shape, a gas distribution chamber equipped with a revolving blade, arranged at an upstream side of the chamber, a sprayer of a cooling liquid arranged at central upper portion of the chamber, a dust exhaust port arranged at the lower end portion of the chamber, and an exhaust pipe arranged on the chamber. Waste heat recovery from exhaust gas is limited to a temperature range capable of suppressing generation of dioxins, and high temperature exhaust gas is rapidly cooled, particularly at a temperature drop rate such that the vicinity of 300.degree. C. is dropped in a short time within 1 second, so that exhaust concentration of dioxins from an incinerator plant can be decreased to 0.1 ng-TEQ/Nm.sup.3 or less.
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Aishima Shizuo
Fujii Masashi
Furukawa Kazukuni
Goshi Takahito
Itoh Takashi
Ohkawara Kakohki Co., Ltd.
Smith Duane S.
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