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To reach the operating parameters, which causes further operating costs reduction, the pyrolysis gas is used as a fuel alternative type. Per year, equipment productive capacity is more than 9000 tons. The plant is able to process a wide range of oil-contaminated waste: crude oil distillation bottoms, heavy oil, oil slime and others. The pyrolysis oil can be put into practice in generators and boilers. The oil output is approximately equal to 30% per ton of raw material. The liquidation of sludge pits close out the yearly billion payments of environmental fines.īy obtaining market-grade product such as liquid fuel the economic effect is also achieved. The pretreatment of feedstock in not claimed the process of entering happens at the same production line and controlled by automatic system. In a multi-stage flue gas cleaning system the flue gases are neutralized, purified and cleaned of acid components. Sludge flows the reactor where it is thermally decomposed under the high temperature to the liquid fuel and pyrolysis gaz The feedstock is mixing with neutralized reagent and with water containing ammonia The hopper that is heated by the flues gases feed the raw materials to reduce the viscosity of the sludge
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To convert the refinery acid sludge into pyrolysis, the first plant was designed by the order of Gazpromneft-Lubricants LTD for its lubricant plant. Since the emergence of such a critical problem the pyrolysis technology put into practice in Thermal Decomposition Plant manufactured by IPEC company which contains the solution for acid tars treatment. However, most the sludge is buried mixed with lime or incinerated that damages the environment. There are other technologies based on either transformation of acid tars to components of road surfaces or sludge mixing with hydrocarbons. The feedstock is reheated under the high temperatures thus transforming the sulfur dioxide into sulfuric acid. The prevailing technology is based on oxidation principal for acid sludge treatment. The sulfuric acid content causing the equipment corrosion and influencing the final product quality is the principal challenge every acid sludge treatment technology collide with. The main possible solution at international waste management market is a liquidation of sludge ponds. The further existence of acid ponds pose a threat to the environment. These acid tars ponds are fit only for temporary storage of hazardous industrial waste, but the storage lasted for decades. The tars are accumulated close to major refineries, in ponds. Moreover, it appears to be a highly viscous tar like mass. Refinery acid tar contains heavy hydrocarbons, sulfuric acid and water. It is arising due to purification of machines, oil containing products and tanks by concentrated sulfuric acid. Acid tars (or acid sludge) is a toxic residue produced by petroleum processing industry.