Low velocity air classifier

Patent · Tue Aug 01 04:00:00 EDT 1989

OSTI ID:5444458

Brown, V

This patent describes an improved apparatus for continuously separating lightweight combustible constituents from heavy constituents of mixed solid municipal waste. It comprises: an elongated chamber having an inlet opening at one end therof and an outlet opening at the opposite end therof, a trough connecting to the bottom of the chamber, the trough having a discharge opening for the heavy constituents, means for removing the heavy constituents from the discharge opening, an air inlet duct connecting to the inlet opining of the chamber, the inlet duct being of smaller sross section than the cross section of the chamber, a suction fan connecting the outlet opening to provide an air stream through the apparatus, including the inlet duct, means for feeding the waste into the air stream to entrain waste particles in the stream, a by-pass duct separate from and substantially parallel to the chamber connecting to the upstream end of the chamber adjacent the inlet opening, and adjacent the outlet opening at the downstream end of the chamber, and a damper disposed at the downstream end of the by-pass duct to adjust the volume of air flowing through the by-pass duct.

• Assignee: NOV; NOV-89-082054; EDB-90-001809
• Patent Number(s): US 4853112
• Application Number: PPN: US 7223440A
• OSTI ID: 5444458
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320604* -- Energy Conservation
Consumption
& Utilization-- Municipalities & Community Systems-- Municipal Waste Management-- (1980-)
AIR FLOW
CONTROL EQUIPMENT
EQUIPMENT
FLOW RATE
FLOW REGULATORS
FLUID FLOW
GAS FLOW
MUNICIPAL WASTES
SEPARATION EQUIPMENT
SEPARATION PROCESSES
SOLID WASTES
WASTES