Method of recovery of excess gas energy of blast furnace gas

Patent · Tue Jul 24 04:00:00 EDT 1984

OSTI ID:6217450

Nagata, O; Matsukura, S; Sasaki, Y; Yamada, H

A method of recovery of furnace gas energy for use to recover excess gas energy from a single or a plurality of furnace gas energy recovering plants each including an expansion turbine mounted in each exhaust system of each blast furnace. In one embodiment, excess gas beyond the power of the respective expansion turbine to recover is removed from each exhaust system of each blast furnace concerned through a branch line, and the removed excess gas is introduced into another expansion turbine through a pressure control valve, to thereby recover the energy possessed by the excess gas. In another embodiment, excess gas is removed through a brnach line from each exhaust system of each plant having excess gas beyond the power of the respective expansion turbine to recover mounted in each blast furnace, and the removed excess gas is introduced through a pressure control valve and a flow distribution valve into at least one plant having reserve in the furnace gas energy recovering capacity to thereby recover the energy possessed by the excess gas. The pressure control valve is regulated by pressure control valve regulating means having the functions of furnace gas pressure control and backflow prevention.

• Assignee: Kawasaki Jukogyo Kabushiki Kaisha (Japan)
• Patent Number(s): US 4461142
• OSTI ID: 6217450
• 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
BLAST FURNACES
CONTROL
CONTROL EQUIPMENT
ENERGY CONSERVATION
ENERGY RECOVERY
EQUIPMENT
EXHAUST GASES
FLOW REGULATORS
FLUIDS
FOUNDRIES
FURNACES
GASEOUS WASTES
GASES
HEAT RECOVERY
INDUSTRIAL PLANTS
PRESSURE CONTROL
RECOVERY
VALVES
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION
WASTES