Title: Process for the cleaning of fouled heat exchangers and other equipment

Abstract: Heat exchangers and other equipment whose surfaces have become fouled with sludge deposits during the use of the equipment in the removal of carbon monoxide, lower olefins, or other complexible ligands from gas streams with a liquid sorbent that comprises a cuprous aluminum tetrahalide and an aromatic hydrocarbon solvent are cleaned by contacting the fouled surfaces of the equipment with an aqueous ammonium chloride solution to dissolve and/or loosen substantially all of the deposited sludge, washing the surfaces with water to remove loosened sludge and residual cleaning solution, and drying them.

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Inventors: Keyworth, Donald A. (Houston, TX, US)
Sudduth, Jerome R. (Pasadena, TX, US)

Application Number: 967036
Filing Date: 1978-12-06
Publication_date: 1980-01-01
Assignee: Tenneco Chemicals, Inc. (Saddle Brook, NJ)
Primary Class(es): 134/2 134/22.16, 134/26, 134/42
Other Classes:
US Patent Ref:

3647843	Mar, 1972	Walker et al.	260/438.
3651159	Mar, 1972	Long et al.	260/438.
3857869	Dec, 1974	Turnbo	260/438.
4099984	Jul, 1978	Christenson et al.	134/2.

Other Refs:
Primary Examiner: Caroff, Marc L.
Assistant Examiner:
Attorney: Berlow; Evelyn