# US 9,751,043 B1 · Systems and method for removal of acid gas in a circulating dry scrubber

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- Number: US 9,751,043 B1
- Document ID: US9751043B1
- Status: Granted
- Kind: B1
- Application number: 14/846,554
- Filed: 2015-09-04
- Granted: 2017-09-05
- Earliest claimed: 2014-09-05
- Assignees: Mississippi Lime Company
- Applicants: Mississippi Lime Company
- Inventors: Curtis Biehn; Randy Griffard; Mark DeGenova; Eric Van Rens
- Web page: https://patentgrep.com/patent/US9751043B1

## CPC

- B01D 53/79: Injecting reactants
- B01D 53/508: {by treating the gases with solids}
- B01D 2251/404: of calcium
- B01D 2257/2045: Hydrochloric acid
- B01D 2258/0283: Flue gases
- 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)

## Abstract

Systems and methods for the use of highly reactive hydrated lime (HRH) in circulating dry scrubbers (CDS) to remove sulfur dioxide (SO2) from the flue gas.

## Claims

### Claim 1

A system for removal of sulfur dioxide (SO2) from a flue gas, the system comprising:
a flue gas duct including a circulating dry scrubber (CDS); and
an injection system for injecting a highly reactive lime hydrate (HRH) into said flue gas in said CDS.

### Claim 2

A method for removal of sulfur dioxide (SO2) from a flue gas, the method comprising: providing a flue gas duct including a circulating dry scrubber (CDS); and
injecting a highly reactive lime hydrate (HRH) into said flue gas in said CDS.