Glycol purification with minimal pH drop

Details Glycol purification with minimal pH drop Glycol purification with minimal pH drop

1982-04-07

1983-08-09

Cintins, Ivars C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

210679, 568872, 568917, B01D 1500

Patent

active

043980465

ABSTRACT:
Standard activated carbons have been commonly employed in the purification of contaminated glycol scrubbing solutions used in a liquid-liquid extraction process for the manufacture of petrochemicals. These carbons are shown to cause a depression of pH within the glycol stream when a new carbon type is installed or when the exhausted carbon is replaced. The use of a magnesite containing activated carbon minimizes this pH drop to acceptable levels.

REFERENCES:
patent: 2822304 (1958-02-01), Gillmore et al.
patent: 4125482 (1977-03-01), Sinha
patent: 4150045 (1978-04-01), Sinha
Calgon Technical Bulletin No. 23-62, "Glycol Purification with Granular Activated Carbon".
Calgon Product Specification Sheet No. 23-76, "Type Cane Cal Granular Carbon".
The Condensed Chemical Dictionary, 9th ed., Van Nostrand Reinhold Co. N.Y., 1971, p. 533.

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