Control of emissions in flue gas

Details Control of emissions in flue gas Control of emissions in flue gas

1980-07-25

1982-04-20

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Solids contacting and mixing

208 73, 208113, 208120, 252417, C10G 5104, C10G 5506

Patent

active

043258174

ABSTRACT:
A system is described for control of sulfur oxide in emissions to the atmosphere from the combined flue gases of selective vaporization and FCC cracking of the improved charge stock resulting from selective vaporization. The invention provides for reduction in sulfur oxide content of the waste gases from the FCC regenerator and the selective vaporization burner and adds a new controllable variable for a heat balanced FCC Unit. The cracking catalyst used has the capability of reversibly reacting with sulfur oxides in the combined flue gases to carry the sulfur back into the reactor where it is converted, at least in part, to hydrogen sulfide which is removed from reaction products in the normal course of treating the cracked products from the reactor. By the disclosed system, the blend of flue gas is cooled and then contacted with hot regenerated catalyst from the regenerator for sorption of sulfur oxides by the catalyst and to cool the catalyst for control of reaction parameters in the FCC reactor.

REFERENCES:
patent: 4010094 (1977-03-01), McKinney
patent: 4064037 (1977-12-01), Graven et al.
patent: 4093537 (1978-06-01), Gross et al.
patent: 4115249 (1978-09-01), Blanton et al.
patent: 4146463 (1979-03-01), Radford et al.
patent: 4240899 (1980-12-01), Gladrow et al.
patent: 4243634 (1981-01-01), Vickers
patent: 4263128 (1981-04-01), Bartholic
patent: 4274942 (1981-06-01), Bartholic et al.

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