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Method to lower fly-ash resistivity

Patent ·
OSTI ID:7054396
; ;
A mixture of an alkyl amine, e.g., tri-n-propylamine and an SO/sub 3/ containing acid, preferably, sulfamic acid is injected into the flue gas stream of a coal-fired utility boiler to reduce the electrical resistivity of the fly-ash particles and to increase their mean particle size, thereby improving their recovery by electrostatic precipitation or by mechanical separation, with consequent reduction in stack emissions.
Assignee:
Dearborn Chemical Co
Patent Number(s):
US 4352747
OSTI ID:
7054396
Country of Publication:
United States
Language:
English

Similar Records

Fly ash collection
Patent · Mon Mar 16 23:00:00 EST 1981 · OSTI ID:6326868
Improving efficiency of electrostatic precipitation by physicochemical modification of the electrical resistivity of fly ash
Journal Article · Thu Jul 01 00:00:00 EDT 1976 · AIChE J.; (United States) · OSTI ID:7132317
Fly-ash formation in a coal-fired boiler. [21 refs]
Technical Report · Tue Jun 01 00:00:00 EDT 1976 · OSTI ID:7123835

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
ADDITIVES
AEROSOL WASTES
AIR POLLUTION CONTROL
AMINES
ASHES
BOILERS
CARBONACEOUS MATERIALS
COAL
CONTROL
DISPERSIONS
DUST COLLECTORS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROSTATIC PRECIPITATORS
ENERGY SOURCES
EQUIPMENT
FLUE GAS
FLY ASH
FOSSIL FUELS
FUELS
GASEOUS WASTES
HEAT EXCHANGERS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MATERIALS
MIXTURES
OPTIMIZATION
ORGANIC COMPOUNDS
PARTICLES
PARTICULATES
PHYSICAL PROPERTIES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
RESIDUES
SULFAMIC ACID
WASTES