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Title: Chemical formulation and combined process for inhibiting deposition and corrosion in cooling water and gypsum scaling in flue gas desulfurization scrubber systems

Abstract

A combined cooling water/flue gas desulfurization process is described comprising: (a) contacting a gas with water in a cooling tower the gas having a lower temperature than the water such that upon contact the water is cooled by the transfer of thermal energy from the water to the gas. The water comprising between about 0.2 and about 100 ppm active by weight of an inhibitor formulation comprising polyacrylate, polymaleic anhydride, and phosphonate; (b) contacting a sulfur-containing gas with reagent slurry in a flue gas desulfurizer thereby desulfurizing the sulfur containing gas; and (c) supplying at least a portion of the water from the cooling tower to make up at least a portion of wash water in the desulfurizer, the water being supplied in an amount sufficient to maintain between about 0.01 and about 20 ppm active by weight of the inhibitor formulation in the reagent wash water.

Inventors:
; ;
Publication Date:
OSTI Identifier:
5718303
Patent Number(s):
US 4834955
Assignee:
Nalco Chemical Co., Naperville, IL
Resource Type:
Patent
Resource Relation:
Patent File Date: 26 Apr 1988
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 54 ENVIRONMENTAL SCIENCES; COOLING TOWERS; CORROSION PROTECTION; CORROSION INHIBITORS; CHEMICAL COMPOSITION; FLUE GAS; DESULFURIZATION; SCRUBBERS; ACRYLATES; AIR POLLUTION CONTROL; ANHYDRIDES; GYPSUM; INHIBITION; MALEIC ACID; PHOSPHONATES; WATER; ALKALINE EARTH METAL COMPOUNDS; CALCIUM COMPOUNDS; CALCIUM SULFATES; CARBOXYLIC ACID SALTS; CARBOXYLIC ACIDS; CHEMICAL REACTIONS; CONTROL; DICARBOXYLIC ACIDS; EQUIPMENT; GASEOUS WASTES; HYDROGEN COMPOUNDS; MECHANICAL STRUCTURES; MINERALS; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXYGEN COMPOUNDS; POLLUTION CONTROL; POLLUTION CONTROL EQUIPMENT; SULFATE MINERALS; SULFATES; SULFUR COMPOUNDS; TOWERS; WASTES; 020800* - Petroleum- Waste Management; 500200 - Environment, Atmospheric- Chemicals Monitoring & Transport- (-1989)

Citation Formats

Mouche, R J, Lin, M L, and Ekis, Jr, E W. Chemical formulation and combined process for inhibiting deposition and corrosion in cooling water and gypsum scaling in flue gas desulfurization scrubber systems. United States: N. p., 1989. Web.
Mouche, R J, Lin, M L, & Ekis, Jr, E W. Chemical formulation and combined process for inhibiting deposition and corrosion in cooling water and gypsum scaling in flue gas desulfurization scrubber systems. United States.
Mouche, R J, Lin, M L, and Ekis, Jr, E W. 1989. "Chemical formulation and combined process for inhibiting deposition and corrosion in cooling water and gypsum scaling in flue gas desulfurization scrubber systems". United States.
@article{osti_5718303,
title = {Chemical formulation and combined process for inhibiting deposition and corrosion in cooling water and gypsum scaling in flue gas desulfurization scrubber systems},
author = {Mouche, R J and Lin, M L and Ekis, Jr, E W},
abstractNote = {A combined cooling water/flue gas desulfurization process is described comprising: (a) contacting a gas with water in a cooling tower the gas having a lower temperature than the water such that upon contact the water is cooled by the transfer of thermal energy from the water to the gas. The water comprising between about 0.2 and about 100 ppm active by weight of an inhibitor formulation comprising polyacrylate, polymaleic anhydride, and phosphonate; (b) contacting a sulfur-containing gas with reagent slurry in a flue gas desulfurizer thereby desulfurizing the sulfur containing gas; and (c) supplying at least a portion of the water from the cooling tower to make up at least a portion of wash water in the desulfurizer, the water being supplied in an amount sufficient to maintain between about 0.01 and about 20 ppm active by weight of the inhibitor formulation in the reagent wash water.},
doi = {},
url = {https://www.osti.gov/biblio/5718303}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 30 00:00:00 EDT 1989},
month = {Tue May 30 00:00:00 EDT 1989}
}