It generally involves the breaking of chemical bonds in molecules to give smaller molecules; but may also leave residues with larger molecular mass. The phenomenon involves exceeding the decomposition temperature of the material. Pyrolysis differs from other processes like combustion and hydrolysis in that it usually does not involve the addition of other reagents such as oxygen O2, in combustion or water in hydrolysis. The term has also been applied to the decomposition of organic material in the presence of superheated water or steam hydrous pyrolysisfor example, in the steam cracking of oil.
Japan has more Fuel from pyrolysis than almost any other country being a small, densely populated island bound nation with few natural resources, but a huge demand for energy and commodities. The approximate million residents and large industrial base place a huge burden on the country to provide sustainable solutions to its waste management problems.
Innovative and efficient technologies were needed on a massive scale that would not only solve the waste disposal issue, but provide a partial solution to the countries need for energy and raw materials.
Japan has pursued a strategy of recovering the maximum amount of value from its waste as possible and since the 's over 1, waste to energy and resource recovery facilities have been established.
With ten million tons a year of plastic waste being produced and having the highest calorific value of any waste stream, this oil rich material was an obvious target for recycling. The challenge in this situation is to process the plastic wastes that others find difficult to recycle or has little commercial value.
Last year 2, tons of this material had to be landfilled or incinerated due to a lack of re-processing capacity. The Sapporo Plastic Recycling "SPR" established a fully commercial plastic liquefaction facility on the island of Hokkaido in that has the capacity to recycle over fifty tons a day of mixed plastic waste.
From this waste stream, the advanced thermal process recovers light oil that is used as a chemical feedstock for the production of new plastics, a medium fuel oil equivalent to diesel and a heavy oil that is used to generate electricity for export to the grid. The SPR technology has a patented dechlorination process that removes the hydrochloric gas produced by the thermal decomposition of PVC and uses water to convert the gas into hydrochloric acid leaving only ppm of chlorine in the oil products.
Additionally, by undertaking several years of research using a special catalyst mixed with the plastic waste in optimal quantities, SPR has learned to deal with the benzoic acid produced by the liquefaction of large loadings of PET, without affecting the pH of the oil product.
These advances and numerous other technology refinements has allowed SPR to develop the Cascade Recycling System, where plastic from the municipal solid waste stream can be mixed with the rejects and residues from other mechanical or material recycling operations, which typically amount to forty or fifty percent of their throughput.
Overtons of plastic has since been recycled and SPR has an excellent safety record and consistently produces high grade products. The company is currently in advanced discussions with a global chemicals conglomerate a leading supplier of the plastic manufacturing industry to jointly establish resource recovery facilities at a number of their key production sites in North America.
This sustainable supply chain solution will provide electricity for their production process, diesel for a large fleet of trucks and recycled chemical feedstock for making new plastic, as well as off-setting carbon dioxide emissions and producer responsibility obligations.
Klean Industries is also in discussions with other leading corporations in the waste and plastic industry and is actively developing new opportunities with qualified partners who can benefit from Klean's portfolio of niche technologies.
The benefits of a 50tpd facility:Plastic pyrolysis involves subjecting plastic to high temperature of to degree Celsius, in absence of oxygen. In case of oxygen is present plastic will start burning. During pyrolysis plastic breaks down into smaller molecules of pyrolysis oil, pyrolysis gas and carbon black.
Pyrolysis is great a way of recycling waste plastics. This plant can also used for waste tire recycling. What is Pyrolysis? Pyrolysis is a procedure of artificially breaking down of natural materials at high temperatures without oxygen.
The procedure commonly happens at temperatures over °C (°F) and it is an irreversible procedure which includes different types of physical and chemical procedures.
The Challenge: Japan has more challenges than almost any other country being a small, densely populated island bound nation with few natural resources, . Plastic pyrolysis involves subjecting plastic to high temperature of to degree Celsius, in absence of oxygen.
In case of oxygen is present plastic will start burning. During pyrolysis plastic breaks down into smaller molecules of pyrolysis oil, pyrolysis gas and carbon black. Pyrolysis is great a way of recycling waste plastics. This plant can also used for waste tire recycling. The working process of batch plastic pyrolysis plant: 1.
Put the waste plastics into the reactor. 2.
Heat the reactor by using fuel materials, such as coal, charcoal, fuel gas, wood etc. Pyrolysis can also be used to treat plastic waste. The main advantage is the reduction in volume of the waste.
In principle, pyrolysis will regenerate the monomers (precursors) to the polymers that are treated, but in practice the process is neither a clean nor an economically competitive source of monomers.