Title:
TREATMENT APPARATUS FOR CEMENT KILN EXHAUST GAS
Document Type and Number:
Japanese Patent JP2015081208
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To recover mercury efficiently from cement kiln exhaust gas at low costs.SOLUTION: A treatment apparatus 1 for cement kiln exhaust gas includes an external heat kiln 2 which heats dust D1 recovered from cement kiln exhaust gas to evaporate mercury contained in the dust D1, a bag filter 5 which separates mercury-containing gas G1 containing evaporated mercury discharged from the external heat kiln 2 into a mercury-containing gas G2 and mercury-removed dust D6, an activated charcoal adsorption tower 8 which recovers evaporated mercury contained in the separated mercury-containing gas G2 and a heat exchanger 4 which exchanges heat between dust D2 discharged from the external heat kiln 2 and dust D3 before charging into the external heat kiln 2, and dust D5 temperature-raised by the heat exchanger 4 is charged into the external heat kiln 2. The calorie of the dust D2 to be discharged from the external heat kiln 2 is utilized effectively to supplement the calorie necessary for evaporation of mercury contained in the dust D1, if necessary, when the gas amount A1 supplied to the external heat kiln 2 is reduced.
Inventors:
WADACHI HITOSHI
Application Number:
JP2013218812A
Publication Date:
April 27, 2015
Filing Date:
October 22, 2013
Export Citation:
Assignee:
TAIHEIYO CEMENT CORP
International Classes:
C04B7/60; B01D53/64; B09B3/00; C22B43/00; F27D17/00
Attorney, Agent or Firm:
Jun Nakai
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