Waste heat recovery boiler apparatus

Patent · Tue Aug 15 04:00:00 EDT 1978

OSTI ID:6350024

Sakai, A; Inui, T; Yokoi, Y

The invention discloses a waste heat recovery boiler apparatus for generating steam by utilizing the heat of exhaust gases of a gas turbine machine, comprising a passage connected at one end thereof to the gas turbine machine, said exhaust gases passing through said passage, a fuel economizer arranged in the passage for preheating feed water, an evaporator arranged in said passage and disposed on the upstream side of said fuel economizer for vaporizing the preheated feed water, a superheater arranged in said passage and disposed on the upstream side of said evaporator for superheating the vaporized feed water to generate superheated steam, and a denitration device arranged in said passage and disposed in a zone in the passage for removing oxides of nitrogen from the exhaust gases. The exhaust gases in such zone have a temperature which is in the range between 300/sup 0/ and 400/sup 0/C, and it is possible to minimize the concentration of oxides of nitrogen contained in the exhaust gases of the gas turbine machine without reducing the thermal efficiency of a combined cycle power plant including the gas turbine machine.

• Assignee: Hitachi, Ltd.
• Patent Number(s): US 4106286
• OSTI ID: 6350024
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200105* -- Fossil-Fueled Power Plants-- Heat Utilization
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320304 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization
BOILERS
DESIGN
GAS TURBINES
TURBINES
TURBOMACHINERY
WASTE HEAT BOILERS
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION