Cleaning and liquid contact with solids – Processes – For metallic – siliceous – or calcareous basework – including...
Patent
1978-12-06
1980-01-01
Caroff, Marc L.
Cleaning and liquid contact with solids
Processes
For metallic, siliceous, or calcareous basework, including...
134 22R, 134 26, 134 42, B08B 308, B08B 900
Patent
active
041815360
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.
REFERENCES:
patent: 3647843 (1972-03-01), Walker et al.
patent: 3651159 (1972-03-01), Long et al.
patent: 3857869 (1974-12-01), Turnbo
patent: 4099984 (1978-07-01), Christenson et al.
Keyworth Donald A.
Sudduth Jerome R.
Berlow Evelyn
Caroff Marc L.
Tenneco Chemicals Inc.
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