Garrets Flash Pyrolysis Process Of Plastics Case Study
Garrets Flash Pyrolysis Process:
This low temperature Pyrolysis process has been developed by Garrett Research and Development Company. In a 4 tonnes per day pilot plant set up by the company at La Varne, California, the solid waste is initially coarse shredded to less than 50mm size, air classified to separate organics / inerts and dried through an air drier. The organic portion is then screened, passed through a hammer mill to reduce the particle size to less than 3mm and then Pyrolysed in a reactor at atmospheric pressure. The proprietary heat exchange system enables pyrolytic conversion of the solid waste to viscous oil at 5000C.
Pyrolysis involves an irreversible chemical change brought about by the action of heat in an atmosphere devoid …show more content…
The biogas production ranges from 50-150m3/tonne of wastes, depending upon the composition of waste. The biogas can be utilized either for cooking/ heating applications, or through dual fuel or gas engines or gas / steam turbines for generating motive power or electricity. The sludge from anaerobic digestion, after stabilization, can be used as a soil conditioner, or even sold as manure depending upon its composition, which is determined mainly by the composition of the input …show more content…
Complex organic materials, carbohydrates, proteins and lipids are hydrolyzed and fermented into fatty acids, alcohol, carbon dioxide, hydrogen, ammonia and sulfides.
Stage II: In this stage the acetogenic bacteria consume these primary products and produce hydrogen, carbon dioxide and acetic acid.
Stage III: It utilizes two distinct types of methanogenic bacteria. The first reduces carbon dioxide to methane, and the second decarboxylates acetic acid to methane and carbon dioxide. The various Factors, affecting the Anaerobic Digestion process, are temperature, pH (Hydrogen Ion Concentration), nutrient concentration, loading rate, toxic compounds and mixing. For start-up a good innoculum such as digested sludge is required. A temperature of about 35-380C is generally considered optimal in mesophilic zone (20-450C) and higher gas production can be obtained under thermophillic temperature in the range of 45-600C. Fig 1.6: Anaerobic Digestion process flow chart Main steps in Anaerobic Treatment of MSW
This low temperature Pyrolysis process has been developed by Garrett Research and Development Company. In a 4 tonnes per day pilot plant set up by the company at La Varne, California, the solid waste is initially coarse shredded to less than 50mm size, air classified to separate organics / inerts and dried through an air drier. The organic portion is then screened, passed through a hammer mill to reduce the particle size to less than 3mm and then Pyrolysed in a reactor at atmospheric pressure. The proprietary heat exchange system enables pyrolytic conversion of the solid waste to viscous oil at 5000C.
Pyrolysis involves an irreversible chemical change brought about by the action of heat in an atmosphere devoid …show more content…
The biogas production ranges from 50-150m3/tonne of wastes, depending upon the composition of waste. The biogas can be utilized either for cooking/ heating applications, or through dual fuel or gas engines or gas / steam turbines for generating motive power or electricity. The sludge from anaerobic digestion, after stabilization, can be used as a soil conditioner, or even sold as manure depending upon its composition, which is determined mainly by the composition of the input …show more content…
Complex organic materials, carbohydrates, proteins and lipids are hydrolyzed and fermented into fatty acids, alcohol, carbon dioxide, hydrogen, ammonia and sulfides.
Stage II: In this stage the acetogenic bacteria consume these primary products and produce hydrogen, carbon dioxide and acetic acid.
Stage III: It utilizes two distinct types of methanogenic bacteria. The first reduces carbon dioxide to methane, and the second decarboxylates acetic acid to methane and carbon dioxide. The various Factors, affecting the Anaerobic Digestion process, are temperature, pH (Hydrogen Ion Concentration), nutrient concentration, loading rate, toxic compounds and mixing. For start-up a good innoculum such as digested sludge is required. A temperature of about 35-380C is generally considered optimal in mesophilic zone (20-450C) and higher gas production can be obtained under thermophillic temperature in the range of 45-600C. Fig 1.6: Anaerobic Digestion process flow chart Main steps in Anaerobic Treatment of MSW