Thermal and chemical remediation of mixed waste

Patent · Sat Jan 01 00:00:00 EST 1994

OSTI ID:869433

Nelson, Paul A ^[1]; Swift, William M ^[2]

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1. Wheaton, IL
2. Downers Grove, IL

A process and system for treating organic waste materials without venting gaseous emissions to the atmosphere. A fluidized bed including lime particles is operated at a temperature of at least 500.degree. C. by blowing gas having 20%/70% oxygen upwardly through the bed particles at a rate sufficient to fluidize same. A toxic organic waste material is fed into the fluidized bed where the organic waste material reacts with the lime forming CaCO.sub.3. The off gases are filtered and cooled to condense water which is separated. A portion of the calcium carbonate formed during operation of the fluidized bed is replaced with lime particles. The off gases from the fluidized bed after drying are recirculated until the toxic organic waste material in the bed is destroyed.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• Assignee: University of Chicago (Chicago, IL)
• Patent Number(s): US 5335609
• OSTI ID: 869433
• Country of Publication: United States
• Language: English

Related Subjects

thermal
chemical
remediation
mixed
waste
process
treating
organic
materials
venting
gaseous
emissions
atmosphere
fluidized
bed
including
lime
particles
operated
temperature
500
degree
blowing
gas
20
70
oxygen
upwardly
rate
sufficient
fluidize
toxic
material
fed
reacts
forming
caco
gases
filtered
cooled
condense
water
separated
portion
calcium
carbonate
formed
operation
replaced
drying
recirculated
destroyed
rate sufficient
bed particles
mixed waste
waste material
fluidized bed
waste materials
calcium carbonate
organic waste
toxic organic
gaseous emissions
chemical remediation
venting gas
venting gaseous
treating organic
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