Patent SG-11201805953Y-A (SG)
Title: Method and apparatus for removing carbon dioxide from flue gas
Inventor: REID TERRENCE
IPC: B01D53/78
Filed: 2017-01-20
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2017/124151 Al 27 July 2017 (27.07.2017) WIPO I PCT 111111111111110111011111111111010111110111011101011111011111111011111111111110111111 W O 20 17 / 12415 1 Al (51) International Patent Classification: BOlD 53/62 (2006.01) B01F 3/04 (2006.01) BOlD 53/78 (2006.01) (21) International Application Number: PCT/AU2017/050043 (22) International Filing Date: 20 January 2017 (20.01.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 2016900186 21 January 2016 (21.01.2016) AU (72) Inventor; and (71) Applicant : REID, Terrence [AU/AU]; 30 Farmhouse Drive, Bibra Lake, Western Australia 6163 (AU). (74) Agent: FB RICE; Level 29, Allendale Square, 77 St Georges Terrace, Perth, Western Australia 6000 (AU). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: with international search report (Art. 21(3)) = (54) Title: METHOD AND APPARATUS FOR REMOVING CARBON DIOXIDE FROM FLUE GAS 10 15 FIGURE 1 (57) : A method of removing carbon dioxide from flue gas is disclosed. The method comprises mixing the flue gas with am - monia; and contacting the gas mixture with calcium nitrate solution to produce calcium carbonate precipitates and ammonium nitrate solution; or contacting the gas mixture with sodium nitrate solution to produce sodium carbonate precipitates and ammonium nitrate solution. The carbonate/bicarbonate precipitates are recovered by separating the carbonate/bicarbonates (s) from said solutions. An apparatus for performing the above method is also disclosed. The apparatus comprises a reaction vessel with an inlet to receive said solution and an inlet to receive and deliver a flue gas-ammonia mixture to a gas-liquid contactor which is configured to diffuse said gas mixture into either calcium nitrate or sodium nitrate solution. The reaction vessel is also provided with an impellor and draft tube configured to circulate the diffused gas mixture throughout the calcium nitrate or sodium nitrate solution for a period of time suffi - cient to produce carbonate/bicarbonate precipitates locking the CO2 into a solid form.