Positronics - Waste Plasma Gasification Process Technology
Plasma cracking is the latest technology for breaking the chemical bonds and destroy any kind of solid or liquid organic waste, PCBs (polychlorinated biphenyls), asbestos and hydrocarbons, some of which can be hazardous if disposed of in landfills or traditional mass-burn incinerators. Plasma gasification is a generic process which can accommodate virtually any waste material, including liquids gases and solids, in any form or combination. Moisture content is not a problem. The process provides substantially lower environmental emissions for both gaseous and slag by-products than do current state-of-the-art technologies.
Generation of Syngas through Plasma Gasification is ideal for the treatment of:
- Plastic waste
- Hospital waste
- Municipal solid waste
- Tannery waste
- Wood and paper waste
- Organic waste
- Oil sludge & Tar
- Coal fines
- Hotel waste
- Colony waste
- Any other carbonaceous waste
This process is a drastic non-incineration thermal process, which uses extremely high temperatures in an oxygen-starved environment to completely decompose input waste material into very simple molecules. The intense and versatile heat generation capabilities of plasma technology enable a plasma gasification/ vitrification facility to treat a large number of waste streams in a safe and reliable manner. Dioxin and furan compounds are not expected to be present in the syngas from gasifiers for two reasons. First, the high temperatures in the gasification process destroy any dioxin or furan compounds or precursors in the feed. Secondly, the reducing environment precludes the formation of free chlorine from HCl, thereby limiting chlorination of any species in the syngas. The by-products of the process are a combustible gas and an inert slag. Plasma gasification consistently exhibits much lower environmental levels for both air emissions and slag leachate toxicity than other thermal technologies.
Decomposition of waste into energy-rich fuel having calorific value of 13 MJ/Kg.
Because of the oxygen starved atmosphere and high temperature, the base elements of the gas cannot form toxic compounds such as furans, dioxins, NOx, or sulfur dioxide in the reactor.
Product gas is rich in CO, hydrogen and light hydrocarbons. The product gas contains substantial sensible heat, which is amenable for heat recovery to improve the efficiency of the electricity generation subsystem. A typical composition of this gas is 24â??43% (v/v) H2, 25â??44% (v/v) CO, 10â??26% (v/v) CO2 and N2, depending mainly on the waste input composition. It is suitable for use as a fuel gas for turbines or gas engines.
- Total replacement of petroleum fuel for the net energy output
- The slag is usable as aggregate, rock-wool, etc.
- Large volume reduction, the slag is 1/250th of the volume of the processed solid waste.
- No harmful emission or leachate
As plasma converted gas can be combusted in gas turbines, higher conversion efficiencies can be achieved. Although the conversion efficiency cannot meet that of a combined cycle plant, because power has to be fed back to the gasifier, conversion efficiency will normally be greater than for a utility boiler system.
- Feed rate: 100kg/hr max
- Feed size: 8mm
- Syngas o/p : 300KW max (based on plastic raw material) gross.
- Water requirement: 20 ltrs /hr
- Power requirement: 80 KW ( from self generation)
- Consumables: Traversing electrode 1 no / month
- Fixed base block 2 no/ year