Chemistry of hydrocarbon compounds – Purification – separation – or recovery – By addition of extraneous agent – e.g. – solvent – etc.
Patent
1996-05-06
1998-12-15
Caldarola, Glenn
Chemistry of hydrocarbon compounds
Purification, separation, or recovery
By addition of extraneous agent, e.g., solvent, etc.
585833, 585864, 95237, 55228, C07C 700, C07C 710, B01D 4700
Patent
active
058499830
ABSTRACT:
This invention pertains to addition of polyisobutylene to a predominantly gaseous stream in a process for preventing the shearing of hydrocarbon droplets in the stream to aerosol sizes. It is difficult to remove droplets of aerosol sizes from gaseous streams with demisters, scrubbers, filters or the like. Generally, aerosol size droplets are created when a predominantly gaseous stream containing some liquid is passed at relatively high velocity through an orifice, valve, bend, tee, choke or the like, or subjected to compression by a turbine. The addition of polyisobutylene would improve the separation efficiency of the demisters, scrubbers, filters or the like. In addition, when the demister pads or compressor has its blades coated with polyisobutylene, drag on the droplets is reduced, resulting in less shearing of the droplets to aerosol sizes. This in turn would result in minimum dissemination of droplets and less wear on the compressor's blades.
REFERENCES:
patent: 3996023 (1976-12-01), Osmond et al.
patent: 4070165 (1978-01-01), Colton
patent: 4758354 (1988-07-01), O'Mara et al.
patent: 4863495 (1989-09-01), Rafson
patent: 5378264 (1995-01-01), Wei et al.
European Search Report of 27 May l997.
Bullock In Suk
Caldarola Glenn
Marlowe Frederik
Shell Oil Company
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