Oil sediment pyrolisis system of plasma double-pipe heat exchanger

Abstract

The present invention discloses an oil sediment pyrolisis system of a plasma double-pipe heat exchanger. The system comprises a plasma heat release system, an oil sediment heat absorbing system, and an exhaust heat recovery system, wherein the oil sediment heat absorbing system comprises an oil sediment duct inlet (1), an oil sediment duct heated segment (15), a screw propeller (2), a pyrolysis product extraction duct (3), and a waste outlet (4); the plasma heat release system comprises a plasma generator (5), a combustion chamber (6), a hot air box (7), and a double-pipe heat exchanger (8); and the waste heat recovery system comprises a hot air extraction duct (9), an induced draft fan (10), a heat exchanger (11), a hot air circulation duct (12), a pyrolysis product extraction duct (3), a heat exchanger (11), a separator (13), and a non-condensable gas igniting pipe (14). The oil sediment pyrolisis system of the plasma double-pipe heat exchanger can continuously treat a large amount of oil sediment, has the advantages of zero emission and efficient recovery of waste heat and the like, and has high economic and environmental protection benefits.

Description

technical field [0001] The invention belongs to the field of environmental protection, and specifically refers to a system that uses plasma as a heat source for pyrolysis treatment of oily sediment. Background technique [0002] Oily sludge is oily solid waste produced in the process of oil extraction, transportation, refining and oily sewage treatment. The oil content in sludge is generally 10-50%, and the moisture content is 40-90%. In my country's petrochemical industry, an average of 800,000 tons of tank bottom mud and pool bottom mud are produced every year. Oily sludge contains a lot of odorous toxic substances such as benzene series, phenols, anthracene, pyrene, etc. If it is directly discharged without treatment, it will not only occupy a lot of cultivated land, but also cause pollution to the surrounding soil, water and air. The mud also contains a large number of pathogenic bacteria, parasites (eggs), heavy metals such as copper, zinc, chromium, mercury, salts, an...

AI Technical Summary

Problems solved by technology

[0004] Such as the incineration method: it has the disadvantages of large investment and high cost, and often needs to add combustion-supporting fuel, which is accompanied by serious air pollution during the incineration process, and cannot recover crude oil, etc.

[0005] For example, biological treatment method: requires high technical level, difficult to obtain microorganisms, large amount of manual input, large floor area, long reaction cycle, and cannot be operated continuously

[0006] Such as thermal analysis: higher requirements for reaction conditions, higher processing costs, and more complicated operations, which need to be further improved

[0007] To sum up, there are various deficiencies in the above various technologies, including deficiencies in applicability and processing capacity, and there are great limitations in use

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