# US 2014/0196499 A1 · Stripper overhead heat integration system for reduction of energy consumption > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0196499 A1 - Document ID: US20140196499A1 - Status: Published application - Kind: A1 - Application number: 13/740,531 - Filed: 2013-01-14 - Published: 2014-07-17 - Earliest claimed: 2013-01-14 - Assignees: ALSTOM Technology Ltd - Applicants: Alstom Technology Ltd. - Inventors: Sanjay Kumar Dube; David James Muraskin - Web page: https://patentgrep.com/patent/US20140196499A1 ## CPC - B01D 53/1425: {Regeneration of liquid absorbents} - B01D 53/1475: {Removing carbon dioxide} - B01D 2252/102: Ammonia - B01D 2252/103: Water - B01D 2257/504: Carbon dioxide - B01D 2259/65: Employing advanced heat integration, e.g. Pinch technology - Y02C 20/40: of CO2 - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - Y02C: CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG] ## Abstract A stripper heat integration system includes a first heat exchanger; a second heat exchanger; and a refrigerant loop comprising a refrigerant and configured for flow of the refrigerant therein. The refrigerant loop is in communication with the first heat exchanger and the second heat exchanger. The stripper heat integration system further includes a compressor located in the refrigeration loop, and configured to compress the refrigerant prior to the refrigerant entering the second heat exchanger. The first heat exchanger and the second heat exchanger are in fluid communication with a stripper, and the stripper heat integration system is configured for use with a carbon capture system, to reduce energy consumption of the carbon capture system. ## Claims ### Claim 1 A stripper heat integration system comprising: a first heat exchanger; a second heat exchanger; a refrigerant loop comprising a refrigerant and configured for flow of the refrigerant therein, the refrigerant loop in communication with the first heat exchanger and the second heat exchanger; and a compressor located in the refrigeration loop, configured to compress the refrigerant prior to the refrigerant entering the second heat exchanger; wherein the first heat exchanger and the second heat exchanger are in fluid communication with a stripper, and the stripper heat integration system is configured for use with a carbon capture system, to reduce energy consumption of the carbon capture system. ### Claim 2 (depends on 1) The stripper heat integration system of claim 1, wherein the first heat exchanger is a condenser and the second heat exchanger is a reboiler. ### Claim 3 (depends on 1) The stripper heat integration system of claim 1, wherein the refrigerant is selected from the group consisting of water, ammonia, hydrocarbons, and a combination thereof. ### Claim 4 (depends on 2) The stripper heat integration system of claim 2, wherein the condenser is configured to receive the refrigerant and reduce temperature. ### Claim 5 (depends on 4) The stripper heat integration system of claim 4, wherein the compressor is configured to receive the reduced temperature refrigerant, compress the refrigerant, and increase pressure of the refrigerant, wherein the refrigerant thereafter condenses in the reboiler. ### Claim 6 (depends on 2) The stripper heat integration system of claim 2, wherein operating temperature of the reboiler is greater than operating temperature of the condenser. ### Claim 7 (depends on 1) The stripper heat integration system of claim 1, further comprising a recirculating slip stream exiting and entering the stripper. ### Claim 8 (depends on 1) The stripper heat integration system of claim 1, wherein the system is part of a chilled ammonia process (CAP) system. ### Claim 9 (depends on 7) The stripper heat integration system of claim 7, wherein the system comprises a third heat exchanger. ### Claim 10 A method of recovering heat duty from a stripper comprising: contacting in a first heat exchanger a gas stream comprising water, ammonia and CO2 with a liquid refrigerant of a refrigerant loop, wherein the gas stream is sent to the first heat exchanger from a stripper overhead section of the stripper, and the refrigerant loop comprises the refrigerant and is in communication with the first heat exchanger and a second heat exchanger; and after the contacting, obtaining from the first heat exchanger a condensed stream comprising, water, ammonia and CO2 and at a temperature less than the temperature of the gas stream entering the first heat exchanger; wherein the first heat exchanger and the second heat exchanger are in fluid communication with the stripper. ### Claim 11 (depends on 10) The method of claim 10, wherein the gas stream entering the first heat exchanger is at a temperature between about 60° C. and about 190° C., and the condensed stream exiting the first heat exchanger is at a temperature between about 40° C. and about 130° C. ### Claim 12 (depends on 10) The method of claim 10, wherein the first heat exchanger is a condenser and the second heat exchanger is a reboiler. ### Claim 13 (depends on 10) The method of claim 10, wherein the refrigerant is selected from the group consisting of water, ammonia, hydrocarbons, and a combination thereof. ### Claim 14 (depends on 12) The method of claim 12, wherein the condenser receives the liquid refrigerant and vaporizers the liquid refrigerant to form a vaporized refrigerant. ### Claim 15 (depends on 14) The method of claim 14, comprising compressing the vaporized refrigerant with use of a compressor to increase pressure and compress the vaporized refrigerant. ### Claim 16 (depends on 11) The method of claim 11, comprising recirculating a slip stream into and out of the stripper. ### Claim 17 (depends on 11) The method of claim 11, comprising recovering the stripper heat duty in a chilled ammonia process (CAP).