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1. WO2019087762 - METHOD AND SYSTEM FOR RECOVERING ACIDIC GAS

Publication Number WO/2019/087762
Publication Date 09.05.2019
International Application No. PCT/JP2018/038419
International Filing Date 16.10.2018
IPC
B01D 53/14 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
14by absorption
B01D 53/18 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
14by absorption
18Absorbing units; Liquid distributors therefor
B01D 53/52 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34Chemical or biological purification of waste gases
46Removing components of defined structure
48Sulfur compounds
52Hydrogen sulfide
B01D 53/62 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34Chemical or biological purification of waste gases
46Removing components of defined structure
62Carbon oxides
B01D 53/78 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34Chemical or biological purification of waste gases
74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
77Liquid phase processes
78with gas-liquid contact
B01D 53/96 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34Chemical or biological purification of waste gases
96Regeneration, reactivation or recycling of reactants
CPC
B01D 15/203
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
15Separating processes involving the treatment of liquids with solid sorbents
08Selective adsorption, e.g. chromatography
10characterised by constructional or operational features
20relating to the conditioning of the sorbent material
203Equilibration or regeneration
B01D 15/3828
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
15Separating processes involving the treatment of liquids with solid sorbents
08Selective adsorption, e.g. chromatography
26characterised by the separation mechanism
38involving specific interaction not covered by one or more of groups B01D15/265 - B01D15/36
3804Affinity chromatography
3828Ligand exchange chromatography, e.g. complexation, chelation or metal interaction chromatography
B01D 2252/204
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2252Absorbents, i.e. solvents and liquid materials for gas absorption
20Organic absorbents
204Amines
B01D 2252/20478
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2252Absorbents, i.e. solvents and liquid materials for gas absorption
20Organic absorbents
204Amines
20478Alkanolamines
B01D 2258/0283
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2258Sources of waste gases
02Other waste gases
0283Flue gases
B01D 53/1412
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
14by absorption
1412Controlling the absorption process
Applicants
  • 三菱重工エンジニアリング株式会社 MITSUBISHI HEAVY INDUSTRIES ENGINEERING, LTD. [JP]/[JP]
Inventors
  • 岡本 真一 OKAMOTO, Shinichi
  • 中村 真司 NAKAMURA, Shinji
  • 平田 琢也 HIRATA, Takuya
Agents
  • 奥山 尚一 OKUYAMA, Shoichi
  • 松島 鉄男 MATSUSHIMA, Tetsuo
  • 中村 綾子 NAKAMURA, Ayako
  • 森本 聡二 MORIMOTO, Toshiji
Priority Data
2017-21048731.10.2017JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) METHOD AND SYSTEM FOR RECOVERING ACIDIC GAS
(FR) PROCÉDÉ ET SYSTÈME DE RÉCUPÉRATION DE GAZ ACIDE
(JA) 酸性ガス回収方法及びシステム
Abstract
(EN) Provided are a method and system for recovering an acidic gas whereby metal ions such as iron ion, a heavy metal ion, etc. in an amine absorbing solution can be quantified within a short period of time at a high accuracy and a factor which enhances the corrosive properties of the amine absorbing solution can be removed at an early stage. The method for recovering an acidic gas comprises a step for gas/liquid contacting a gas to be treated with an amine absorbing solution and thus allowing the absorbing solution to absorb an acidic gas to thereby remove the acidic gas from the gas to be treated, a step for diffusing the gas from the absorbing solution having absorbed the acidic gas to thereby regenerate the absorbing solution and, at the same time, recover the diffused gas, and an analysis step for calculating the iron ion and/or heavy metal ion concentrations in the absorbing solution, wherein the analysis step comprises: a step for controlling the pH of the collected absorbing solution until the ions are adsorbed to a chelate resin; a step for passing the absorbing solution through the resin and thus allowing the resin to adsorb the ions in the absorbing solution; a step for passing the regenerated acidic solution through the resin having adsorbed the ions and thus desorbing the ions and, at the same time, regenerating the resin to thereby give an ion-containing sample; and a step for quantifying the ions in the sample and calculating the concentrations of the ions in the collected absorbing solution on the basis of the quantification results.
(FR) L'invention concerne un procédé et un système de récupération d'un gaz acide, les ions métalliques tels que l'ion fer, un ion métal lourd, etc. Dans une solution d'absorption d'amine peut être quantifiée dans une courte période de temps à une précision élevée et un facteur qui améliore les propriétés corrosives de la solution d'absorption d'amine peut être éliminé à un stade précoce. Le procédé de récupération d'un gaz acide comprend une étape de mise en contact gaz/liquide d'un gaz à traiter avec une solution d'absorption d'amine et permettant ainsi à la solution absorbante d'absorber un gaz acide pour ainsi éliminer le gaz acide du gaz à traiter, une étape de diffusion du gaz à partir de la solution absorbante ayant absorbé le gaz acide pour ainsi régénérer la solution absorbante et, en même temps, récupérer le gaz diffusé, et une étape d'analyse pour le calcule des concentrations d'ions de fer et/ou d'ions métalliques lourds dans la solution absorbante, l'étape d'analyse comprenant: une étape de régulation du pH de la solution absorbante collectée jusqu'à ce que les ions soient adsorbés sur une résine chélatante; une étape de passage de la solution absorbante à travers la résine et ainsi à permettre à la résine d'adsorber les ions dans la solution absorbante; une étape de passage de la solution acide régénérée à travers la résine ayant adsorbé les ions et ainsi à désorber les ions et, en même temps, régénérer la résine pour obtenir ainsi un échantillon contenant des ions; et une étape de quantification des ions dans l'échantillon et de calcule des concentrations des ions dans la solution absorbante collectée sur la base des résultats de quantification.
(JA) アミン吸収液中の鉄イオン、重金属イオン等の金属イオンを短時間で且つ高精度に定量でき、早期にアミン吸収液の腐食性を増大する因子を除去できる酸性ガス回収方法及びシステムが提供される。処理対象ガスにアミン吸収液を気液接触させて、吸収液に酸性ガスを吸収させることにより処理対象ガスから酸性ガスを除去する工程と、酸性ガスを吸収した吸収液からガスを放散させることにより、吸収液を再生するとともに放散したガスを回収する工程と、吸収液中の鉄イオン及び/又は重金属イオンの濃度を算出する分析工程とを含み、分析工程が、採取した吸収液のpH値をイオンがキレート樹脂に吸着するまで調整する工程と、吸収液を樹脂に通液することにより吸収液中のイオンを樹脂に吸着させる工程と、イオンを吸着させた樹脂に酸性の再生液を通液することによりイオンを脱離させ、樹脂を再生するとともに、イオンを含有する試料を得る工程と、試料中のイオンを定量し、定量結果から採取した吸収液中のイオンの濃度を算出する工程とが含まれる。
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