# US 9,039,813 B2 · Exhaust gas treatment apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,039,813 B2 - Document ID: US9039813B2 - Status: Granted - Kind: B2 - Application number: 13/503,885 - Filed: 2010-10-21 - Published: 2012-10-25 - Granted: 2015-05-26 - Earliest claimed: 2009-10-26 - Assignees: Chiyoda Corporation - Applicants: Noboru Takei; Sohsuke Kido; Naohiro Kaji; Akira Kumagai - Inventors: Noboru Takei; Sohsuke Kido; Naohiro Kaji; Akira Kumagai - Web page: https://patentgrep.com/patent/US9039813B2 ## CPC - B01D 53/504: {characterised by a specific device} - B01D 53/78: with gas-liquid contact - F23J 15/02: of purifiers, e.g. for removing noxious material (traps for solid residues F23J3/04) - B01D 2251/404: of calcium - B01D 2251/606: Carbonates - B01D 2257/302: Sulfur oxides - B01D 2258/0283: Flue gases - F23J 2215/20: Sulfur; Compounds thereof - F23J 2219/40: Sorption with wet devices, e.g. scrubbers - 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) - F23J: REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES (combustion apparatus for consuming smoke or fumes, e.g. exhaust gases, F23G7/06) ## Abstract The exhaust gas treatment apparatus has a sealed vessel which is vertically partitioned into two spaces by a partition. A portion of the sealed vessel lower than the partition is an absorbing liquid storage portion, and a portion of the sealed vessel upper than the partition is an exhaust gas introducing portion. The partition is provided with a large number of sparger pipes so that the sparger pipes reach inside an absorbing liquid stored in the absorbing liquid storage portion. The partition is provided with a single gas riser in communication with a space upper than the absorbing liquid in the absorbing liquid storage portion. An upper end of the gas riser passes through a top plate portion of the sealed vessel and protrudes upward. ## Claims ### Claim 1 An exhaust gas treatment apparatus, comprising: a sealed vessel in which exhaust gas is introduced and treated; a partition which vertically divides an inside of the sealed vessel; an absorbing liquid storage portion which is provided under the partition of the sealed vessel and stores an absorbing liquid for desulfurization absorbing sulfur oxides from exhaust gas; an exhaust gas introducing portion which is provided above the partition of the sealed vessel and introduces exhaust gas from outside of the sealed vessel; a plurality of sparger pipes which are in communication with the exhaust gas introducing portion, extends inside the absorbing liquid stored in the absorbing liquid storage portion on the lower side from the partition, and ejects and disperses exhaust gas into the absorbing liquid from the exhaust gas introducing portion; and a gas riser which is in communication with a space above the absorbing liquid in the absorbing liquid storage portion, extends upward from the partition, and passes through the exhaust gas introducing portion, wherein the gas riser is provided to extend to the outside of the sealed vessel above the exhaust gas introducing portion, and treated exhaust gas is derived outside the sealed vessel by the gas riser, wherein a ratio of a vertical length of an upper space of the absorbing liquid storage portion to a diameter of the sealed vessel is 0.05 to 0.2, wherein a ratio of a cross-sectional area of the gas riser to a cross-sectional area of the sealed vessel is 0.15 to 0.40, and wherein a ratio of a vertical length of the gas riser to a diameter of the gas riser is 0.3 to 0.1. ### Claim 2 (depends on 1) The exhaust gas treatment apparatus according to claim 1, further comprising an eliminator which is provided at an upper end of the gas riser and removes droplets from the treated exhaust gas rising in the gas riser, wherein the treated exhaust gas is derived from the gas riser through the eliminator. ### Claim 3 (depends on 1, 2) The exhaust gas treatment apparatus according to claim 1 or 2, wherein only the single gas riser is provided in the single sealed vessel. ### Claim 4 (depends on 3) The exhaust gas treatment apparatus according to claim 3, wherein the gas riser is joined to the partition, and a cross-sectional area of an upper end of the gas riser at which the eliminator is provided is larger than a cross-sectional area of a lower end of the gas riser in communication with an absorbing liquid storage portion under the partition. ### Claim 5 (depends on 4) The exhaust gas treatment apparatus according to claim 4, wherein the gas riser includes a distribution plate which suppresses a deviation of gas flow in the gas riser.