Title:
METHOD AND SYSTEM FOR RECOVERING ACIDIC GAS, AND METHOD AND SYSTEM FOR ANALYSIS FOR IRON ION
Document Type and Number:
WIPO Patent Application WO/2017/073447
Kind Code:
A1
Abstract:
A method and system for recovering acidic gases and a method and system for analysis for iron ions are provided with which it is possible to determine the amount of iron ions contained in an absorbing amine solution in a short time with high accuracy and to take a measure for early removing a factor which heightens the corrosive properties of the absorbing amine solution. In an absorption tower 10, an absorbing amine solution is brought into contact, by gas/liquid contacting, with an acidic-gas-containing gas to be treated, thereby making the absorbing amine solution absorb the acidic gases. In a regeneration tower 20, the absorbing amine solution which has absorbed the acidic gases is made to release the acidic gases, thereby regenerating the absorbing amine solution. Some of the absorbing amine solution, which is thus circulated, is passed through a chelate resin inside an iron-ion analyzer 40 to adsorb the iron ions contained in the absorbing amine solution onto the chelate resin. Next, a liquid regenerant is passed through the chelate resin onto which the iron ions have been adsorbed, thereby desorbing the iron ions to regenerate the chelate resin and obtain the liquid regenerant which contains the iron ions. The liquid regenerant containing iron ions is examined to determine the amount of the iron ions, and the concentration of iron ions in the absorbing amine solution is calculated.
Inventors:
HIRATA TAKUYA (JP)
OKAMOTO SHINICHI (JP)
NAGAYASU HIROMITSU (JP)
CHIYOMARU MASARU (JP)
TSUJIUCHI TATSUYA (JP)
OKAMOTO SHINICHI (JP)
NAGAYASU HIROMITSU (JP)
CHIYOMARU MASARU (JP)
TSUJIUCHI TATSUYA (JP)
Application Number:
PCT/JP2016/081074
Publication Date:
May 04, 2017
Filing Date:
October 20, 2016
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
B01D53/14; B01D15/00; B01D53/52; B01D53/62; B01D53/78; B01J20/26; B01J20/34; G01N31/00
Domestic Patent References:
| WO2014086988A1 | 2014-06-12 |
Foreign References:
| JP2014185913A | 2014-10-02 | |||
| JPS60501756A | 1985-10-17 | |||
| JP2011056399A | 2011-03-24 | |||
| JPH06194314A | 1994-07-15 | |||
| JP2009288021A | 2009-12-10 |
Other References:
See also references of EP 3369472A4
Attorney, Agent or Firm:
OKUYAMA, Shoichi et al. (JP)
Download PDF: