Title:
METHOD FOR TREATING ACIDIC GAS
Document Type and Number:
WIPO Patent Application WO/2013/008918
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a method for treating an acidic gas according to a novel control scheme for performing a stable acidic gas treatment that rarely causes the acidic gas concentration at the outlet to peak and for reducing the excessive addition of alkali agents in a feedback format that does not require the introduction of a new, expensive acidic-gas measurement device. This method for treating an acidic gas involves adding an alkali agent to a combustion exhaust gas containing an acidic gas and feedback-controlling the amount of the alkali agent to be added on the basis of a measurement signal from an acidic gas concentration measurement device which measures the acidic gas concentration after dust collection, the method involving at least: a step of calculating a basal addition amount found by multiplying the average addition amount suitable for the average time (for example, 1 hour, as described later) by a factor of 1 or less (for example, 80%, as described later); and a step of calculating, through feedback computation, an output value for the amount of the alkali agent to be added on the basis of the calculated basal addition amount.
Inventors:
MASHIKO MITSUHIRO (JP)
Application Number:
PCT/JP2012/067954
Publication Date:
January 17, 2013
Filing Date:
July 13, 2012
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
MASHIKO MITSUHIRO (JP)
MASHIKO MITSUHIRO (JP)
International Classes:
B01D53/68; B01D53/50; B01D53/81; G05D21/00
Foreign References:
| JP2006075758A | 2006-03-23 | |||
| JP2007237019A | 2007-09-20 | |||
| JP2002113327A | 2002-04-16 | |||
| JP2003210934A | 2003-07-29 |
Attorney, Agent or Firm:
HAYASHI, Kazuyoshi et al. (JP)
Wood Kazuyoshi (JP)
Wood Kazuyoshi (JP)
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Claims: