酸性ガス回収方法及びシステム

Japanese Patent JP7134618

B2

Provided are a method and system for recovering an acidic gas, which can quantify metal ions such as iron ions and heavy metal ions in an amine absorbing solution in a short time and with high accuracy, and can remove factors which increase the corrosivity of the solution at an early stage. The method includes: bringing a gas to be treated into gas-liquid contact with an amine absorbing solution, allowing the solution to absorb the acidic gas, and thereby removing the acidic gas from the gas to be treated; allowing the solution that has absorbed the acidic gas to dissipate the gas, thereby regenerating the solution, and at the same time, recovering the dissipated gas; and an analysis step of calculating concentrations of iron ions and/or heavy metal ions in the solution, wherein the analysis step includes: adjusting a pH value of the collected solution until ions adsorb to the chelating resin; passing the solution through the resin, thereby allowing the resin to adsorb ions in the solution; passing an acidic regenerating solution through the resin that has adsorbed ions, thereby allowing ions to desorb, regenerating the resin, and at the same time, obtaining a sample containing ions; and quantifying ions in the sample, and calculating the concentrations of ions in the collected solution, from the quantification results.

Shinichi Okamoto
Nakamura Shinji
Takuya Hirata

JP2017210487A

September 12, 2022

October 31, 2017

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Mitsubishi Heavy Industries Engineering Co., Ltd.

B01D53/14; B01D53/18; B01D53/52; B01D53/62; B01D53/78; B01D53/96; B01J45/00; B01J49/05; G01N31/00

JP2016507355A
JP2013108108A
JP2012236170A
JP2012086216A
JP2011168539A
JP5277342A
JP59169920A
JP2017080670A

Fujiharu
Takaori Mitoma
Miki Kawakami
Daisuke Nagata

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