Gas-turbine total energy system for a cement plant

Conference · Sat Jan 01 04:00:00 EST 1977

OSTI ID:7321478

Green, L Jr

The use of a coal-fired, closed-cycle gas turbine to provide electric power and process heat to a ''wet process'' cement plant is proposed. Taking the example of a large plant requiring 100 million kilowatt-hours of electric energy per year, it is estimated that, by substitution of in-plant power generation for purchased electricity and use of reject heat for slurry dewatering, annual energy cost savings (at current rates) sufficient to pay off the capital cost of the installation between 5 and 15 years (depending upon the amount of that cost) could be realized. This degree of savings will increase as the price of power increases due to ''normal'' projected escalation of coal costs, plus the imposition of requirements for emission control equipment to meet stringent environmental quality standards. Because the fly ash from pulverized coal firing and the limestone sludge from a stack-gas scrubber represent feed materials for the cement process, emission control does not constitute the burden on a cement plant that it would for an electric utility, but rather permits additional savings due to effective use of ''waste'' materials. Conservation of energy, material resources, and the environment could thus be accomplished simultaneously.

• OSTI ID: 7321478
• Report Number(s): CONF-770317-3
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000 -- Coal
Lignite
& Peat-- Combustion
29 ENERGY PLANNING, POLICY, AND ECONOMY
290100 -- Energy Planning & Policy-- Energy Analysis & Modeling
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
320305 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
AEROSOL WASTES
AIR POLLUTION
BUILDING MATERIALS
CARBONACEOUS MATERIALS
CARBONATE ROCKS
CEMENT INDUSTRY
CEMENTS
CHEMICAL REACTIONS
COAL
COMBUSTION
DUAL-PURPOSE POWER PLANTS
ECONOMICS
ENERGY CONSERVATION
ENERGY SOURCES
EQUIPMENT
FLY ASH
FOSSIL FUELS
FUELS
GAS TURBINES
INDUSTRIAL PLANTS
INDUSTRY
LIMESTONE
MATERIALS
OXIDATION
PERFORMANCE
POLLUTION
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
POWER GENERATION
POWER PLANTS
PRODUCTION
RECYCLING
RESERVOIR ROCK
RESOURCE CONSERVATION
ROCKS
SCRUBBERS
SEDIMENTARY ROCKS
THERMOCHEMICAL PROCESSES
TOTAL ENERGY SYSTEMS
TURBINES
TURBOMACHINERY
USES
WASTES