Fuel injection staged sectoral combustor for burning low-Btu fuel gas

Patent · Tue Mar 03 04:00:00 EST 1981

OSTI ID:6308954

Vogt, R L

A high-temperature combustor for burning low-Btu coal gas in a gas turbine is described. The combustor comprises a plurality of individual combustor chambers. Each combustor chamber has a main burning zone and a pilot burning zone. A pipe for the low-Btu coal gas is connected to the upstream end of the pilot burning zone; this pipe surrounds a liquid fuel source and is in turn surrounded by an air supply pipe; swirling means are provided between the liquid fuel source and the coal gas pipe and between the gas pipe and the air pipe. Additional preheated air is provided by counter-current coolant air in passages formed by a double wall arrangement of the walls of the main burning zone communicating with passages of a double wall arrangement of the pilot burning zone; this preheated air is turned at the upstream end of the pilot burning zone through swirlers to mix with the original gas and air input (And the liquid fuel input when used) to provide more efficient combustion. One or more fuel injection stages (Second stages) are provided for direct input of coal gas into the main burning zone. The countercurrent air coolant passages are connected to swirlers surrounding the input from each second stage to provide additional oxidant.

• Assignee: General Electric Co
• Patent Number(s): US 4253301
• OSTI ID: 6308954
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
034000 -- Natural Gas-- Combustion
20 FOSSIL-FUELED POWER PLANTS
200104* -- Fossil-Fueled Power Plants-- Components
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
CHEMICAL REACTIONS
COMBUSTION
COMBUSTORS
DESIGN
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GAS TURBINE POWER PLANTS
GAS TURBINES
GASES
LOW BTU GAS
MACHINERY
OXIDATION
POWER PLANTS
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY