US 2016/0256825 A1 · RECLAIMING DEVICE, METHOD, AND RECOVERY UNIT OF CO2, H2S, OR BOTH OF CO2 AND H2S

Abstract

Provided are a reclaimer 51 that introduces, through a branch line L11, and stores a part 17a of an absorbent 17 regenerated in a regenerator of a recovery unit that recovers CO2 or H2S in a gas, a first alkaline agent supply section 53A that, supplies an alkaline agent 52 to the reclaimer 51, a heating section 54 that heats the absorbent 17 stored in the reclaimer 51 and to which the alkaline agent 52 has been mixed to obtain recovered vapor 61, a first vapor cooler 55A that cools the recovered vapor 61 discharged from the reclaimer 51 through a vapor line L12, a first gas-liquid separator 56A that separates a coexisting substance 62 entrained in the cooled recovered vapor 61 into a recovered absorption agent vapor (gas) 17b and the liquid coexisting substance 62 by gas-liquid separation, and an introduction line L13 that introduces the recovered absorption agent vapor 17b separated in the first gas-liquid separator 56A into a regenerator 20.

Claims9

Dependent claims

A reclaiming device comprising:

a reclaimer configured to introduce and store a part of an absorbent regenerated in an absorbent regenerator of a recovery unit that recovers CO2 or H2S in a gas;
a first alkaline agent supply section con figured to supply an alkaline agent to the reclaimer;
a heating section configured to heat the absorbent stored in the reclaimer and to which the alkaline agent has been mixed to obtain recovered vapor;
a first vapor cooler configured to cool the recovered vapor discharged from the reclaimer through a vapor line;
a first gas-liquid separator configured to separate a coexisting substance entrained in the cooled recovered vapor into recovered absorption agent vapor and a liquid coexisting substance by gas-liquid separation;
and
an introduction line configured to introduce the recovered absorption agent vapor separated in the first gas-liquid separator to the absorbent regenerator.

4 more elements

A reclaiming device comprising:

a reclaimer configured to introduce and store a part of an absorbent regenerated in an absorbent regenerator of a recovery unit that recovers CO2 or H2S in a gas;
a first alkaline agent supply section configured to supply an alkaline agent to the reclaimer;
a heating section configured to heat the absorbent stored in the reclaimer and to which the alkaline agent has been mixed to obtain recovered vapor;
a second vapor cooler configured to cool the recovered vapor discharged from the reclaimer through a vapor line;
a first gas-liquid separator configured to separate a coexisting substance entrained in the cooled recovered vapor into recovered absorption agent vapor and a liquid coexisting substance by gas-liquid separation;
a cooler configured to cool the separated recovered absorption agent vapor;
a second gas-liquid separator configured to separate the recovered absorption agent vapor after cooling into a low-boiling point substance flue gas and a recovered absorbent by gas-liquid separation;
a heat exchanger configured to perform heat exchange of the liquid coexisting substance separated in the first gas-liquid separator with vapor condensed water from vapor supplied to the reclaimer to increase a temperature;
a CO2 absorber configured to bring the liquid coexisting substance after increase in the temperature and a CO2 gas in contact;
a second alkaline agent supply section configured to supply the alkaline agent to the liquid coexisting substance after absorption of CO2;
and
a distiller configured to distill the liquid coexisting substance to which the alkaline agent has been supplied while introducing the CO2 gas thereinto.

9 more elements

Dependencies are inferred from the claim text.

Reclaiming device, method, and recovery unit of co2, h2s, or both of co2 and h2s

Life of this patent

Reclaiming device, method, and recovery unit of co2, h2s, or both of co2 and h2s

Life of this patent

Abstract

Claims9