INSTALLATION AND METHOD OF CO OR HS EXTRACTION Russian patent published in 2012 - IPC B01D53/14 

FIELD: process engineering.

SUBSTANCE: invention relates to installation and method of CO₂ and H₂S extraction. Proposed installation comprises, at least, first and second identical hardware complexes for extraction of said compounds. Every said complex comprises absorber, regenerator, line to feed saturated solution from absorber into regenerator and line to feed weak solution from regenerator into absorber. One of substance, CO₂ or H₂S, is extracted in absorber by flue gases getting in contact with absorbing solution. Recovery of saturated solution that absorbed, at least, one of said substances, occurs in regenerator. Fed flue gases are continuously fed to pass through first complex absorbing solution located upstream of fed flue gas and second complex absorbing solution located downstream of said flue gas. First and second complex absorbing solutions are recovered subject to their temperatures. First complex absorbing solution has desorption capacity suitable for absorption and recovery at low temperature while second complex absorbing solution has absorption capacity suitable for absorption and recovery at high temperature. Various types of first and second complex absorbing solutions are fed independently into said first and second complex.

EFFECT: higher efficiency of absorption reduced power consumption.

10 cl, 1 ex, 8 dwg