Chemical process fired heaters, furnaces or boilers

Patent · Tue Nov 15 04:00:00 EST 1988

OSTI ID:6558792

Stark, D C

This patent describes a chemical process plant incorporating a gas turbine, means for utilizing the sensible heat of the gas turbine exhaust (GTE) and a fuel-fired heater including a radiant heating section, fuel being burnt in the radiant section for the purpose of heating therein process-fluid contained in a least one process coil, a heat recovery section being provided in the flue of the heater and containing one or more coils containing heat recovery fluids, wherein the improvement comprises a two-channel heat exchanger having a first channel connected between the gas turbine exhaust and an auxiliary gas exhaust means and having a second channel of the heat exchanger connected between a source of fresh air and the fuel-oxidizing medium input of the radiant section of the heater, the heat exchanger thereby supplying heated fresh air to the radiant section at substantially atmospheric pressure, and including a first burner in the flue and a bypass duct connected between the output of the second channel of the heat exchanger and the first burner for conveying surplus heated air from the heat exchange to the first burner for the purposes of supporting combustion therein, the first burner having a further duel supply, and including controllable valve means in the bypass duct for controlling the flow of fluid therein.

• Assignee: Foster Wheeler USA Corp., Clinton, NJ
• Patent Number(s): US 4784069
• OSTI ID: 6558792
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320304* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
BOILERS
BURNERS
DESIGN
ENERGY
ENERGY RECOVERY
EQUIPMENT
EXHAUST GASES
FLUIDS
FURNACES
GAS TURBINES
GASEOUS WASTES
GASES
HEAT
HEAT EXCHANGERS
HEAT RECOVERY
HEAT RECOVERY EQUIPMENT
HEATERS
MACHINERY
RECOVERY
TURBINES
TURBOMACHINERY
WASTE HEAT
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION
WASTES