A Pyrolysis Energy Recovery System for Oily Sludge Based on Single-screw Expander

Abstract

The object of the present invention is to provide a kind of oily sludge pyrolysis energy recovery system based on single-screw expander, to make full use of a large amount of waste heat resources existing in the present sludge pyrolysis system, including pyrolysis reactor, used for sludge sludge pyrolysis Pyrolysis into pyrolysis flue gas, cracked oil gas and solid residue; the pyrolysis flue gas outlet of the pyrolysis reactor is connected to the first evaporator, and the pyrolysis flue gas and the first organic working fluid are realized in the first evaporator The first evaporator is also connected to a flue gas purification device for discharging pyrolysis flue gas; the first evaporator is provided with a first organic working medium inlet and a first organic working medium outlet, and the first An organic working medium outlet is connected in series with the first single-screw expander, the first condenser and the first working medium pump through the pipeline, and then connected back to the first organic working medium inlet; the first single-screw expander and the first Generator connection.

Description

technical field [0001] The invention relates to an oily sludge pyrolysis energy recovery system based on a single-screw expander, which is mainly used for recycling pyrolysis flue gas and energy in cracked oil gas produced in oily sludge, and belongs to the field of industrial waste heat utilization. Background technique [0002] At present, the world's resources are in short supply, and our country has low energy utilization rate and serious waste of resources. Moreover, my country is in the late stage of industrialization, and industrialization continues to accelerate, but the level of resource utilization cannot keep up with the process of industrialization, resulting in poor economic benefits and intensified pressure on the ecological environment. In 2016, my country officially became the world's largest energy consumer, accounting for 23% of global consumption. The energy consumption in the industrial field is as high as 70% of the total energy consumption in the countr...

AI Technical Summary

Problems solved by technology

There are a lot of waste heat resources in the sludge pyrolysis system. The temperature of the pyrolysis flue gas is too high, and the direct discharge will cause waste and environmental pollution. The cracked oil gas needs to be cooled, and a large amount of energy will be released during cooling. Therefore, the energy recovery system is designed to realize the waste. The recovery and utilization of waste heat from low-grade heat sources in the sludge pyrolysis system is very important for energy saving and consumption reduction in the actual industrial production process of sludge pyrolysis recovery

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