What is the heat treatment?
Heat treatment is most often a term that refers to the method of waste processing that cannot be recycled back to the consumer products sector. By applying heat to waste at specific levels or in fact its combustion equipment, the volume of invaluable materials is dramatically reduced and flammable materials are burned for electrical energy from waste. The related field of heat treatment is the processing of contaminated soil or groundwater to remove pollutants. The primary aim of such treatment is to separate hydrocarbons and other organic compounds from inorganic materials such as heavy metals and metal salts. Some industries relying on heat treatment for economic efficiency and compliance with environmental laws are the sector of urban waste, cement furnaces and the developing thermal depolymerization industry (TDP), which creates oil from waste. In some cases this process creates waste compounds, toThey are in accordance with environmental laws and can be destroyed in landfills. In situations where high number of heavy metal compounds are produced, these materials must be processed further or sent to a facility that can use waste in some industrial production. However, the cost of treatment of waste by thermal methods is considered to be relatively low and are mostly a factor in working expenses.
Since 2011, there have been two main types of waste treatment. The combustion is used in cement furnaces at temperatures of 2,552 ° to 2,732 ° Fahrenheita (1,400 ° to 1,500 ° Celius), where hydrocarbon overalls are destroyed or produced on waste such as it is in the media polish area like that is like hydrocanted combined. For hydrocand combined. Other approaches to combustion include pyrolysis -offing the division of organic compoundsWithout the presence of oxygen and gasification, which reacts the same compounds with oxygen and steam to form syngas, fuel composed of predominantly oxide and carbon monoxide hydrogen.
Thermal desorption is the second method of heat treatment available since 2011, where compounds evaporate but not burned. The methodology can be used to treat contaminated water and soil on site, to remove volatile organic compounds that are evaporated, and collected for further use or disposal. Treatment of soil or water in this way is carried out by various methods, including electrical resistance and heating of radiofrequency frequency or injection of hot compounds such as air, water or steam. Soil and water that have an extreme level of contamination, such as radioactive waste, are treated with the thermal desorption process known as vitrification, where the materials are reformed to the type of glass that removes organic compounds and captures metals and radionuclides.Vitrification is a costly process that must be performed at TEplots 2,912 ° to 3,632 ° Fahrenheite (1,600 ° to 2,000 ° C).
Thermal depolymerization is another form of waste treatment that uses waste biomass and plastic raw material in an accelerated version of the natural process that creates fossil fuels. Pressure and heat are applied to the waste over a few hours to break the molecular structure of the compounds into simpler hydrocarbon chains. Initially, thermal depolymerization required more energy to produce fuel than the fuel could provide itself until 1996, when the improvement in the process was economically viable.
It is estimated that at least 3 198,916 tons of the bypass of solid waste (MSW) have been converted into energy every year, the three best western companies in the field. This is only a very small amount of fixed waste that is actually produced around Globe but annually, with only China produces only 211,000,000 tonnes of MSW in 2007. It is estimated that Japan has been leading the world since 2007MSW processing, where more than 40,000,000 tonnes were processed. The main disadvantage of the heat treatment is that, despite strict controls, this process creates significant amounts of highly toxic air pollution substances such as dioxin compounds, mercury and carbon monoxide.