Brief Description of PC System Gasifier & Cyclone Oxidizer

New waste is added to the top of a burning column of waste in the primary chamber. Primary air is added at the bottom of the column. Hot gases from combustion at the bottom of the column rise and start pyrolytic decomposition of the waste in the column. In continuous operation, the waste progressively decomposes as it falls through the column until it is pure carbon and ash at the bottom. The primary air burns the carbon and only ash is left. The oxygen in the primary air is used up before the gases rise the full length of the column so that combustion only takes place at the bottom. Carbon dioxide from combustion at the bottom also is reduced to carbon monoxide as it rises through the column. The combustible gas that leaves the primary chamber passes through a transfer tube to the secondary cyclone chamber where more air is added and complete combustion takes place.
Typical Output of the Cyclone
The following are the results of a mathematical test model of a typical run:
Waste in

• Quantity – 400 LB/hr of type 1 rubbish
  
• Moisture – 25% or 100 LB/hr
  
• Ash – 10% or 40 LB/hr
  
• Heat value – 7,175 Btu/LB or 2,870,000 Btu/hr
  
• Fixed carbon – 55% of original carbon content or 82 LB/hr
  
• Combustion water – 195 LB/hr

Gas out

• Temperature – 1,020°C
  
• Quantity – 1,050 SCFM or 4,675 LB/hr
  
• Moisture – 111 SCFM or 311 LB/hr
  
• Inert gases – 753 SCFM or 3,302 LB/hr
  
• Oxygen – 103 SCFM or 514 LB/hr or 11% by volume
  
• Carbon dioxide – 80 SCFM or 548 LB/hr
  
• Pressure – varies widely between 3" and 16" water column

Aseptic Services Inc., 85 South 1380 West, Lindon, UT 84042. Tel: 520-323-5553; Fax: 520-323-6072.