Plasma cracking device for high salt and high concentration organic residual liquid

Abstract

The invention discloses a plasma cracking device for high salt and high concentration organic residual liquid. The device includes a first plasma cracking generator, a hearth, a residual liquid wasteheat recoverer and an air waste heat recoverer. Residual liquid is heated and gasified by the residual liquid waste heat recoverer, and then the product is introduced into the first plasma cracking generator for cracking, and the cracked gas enters the hearth, a gasified inorganic salt in the cracked gas condenses in the hearth into a molten salt and falls into a molten salt liquid seal area, thenthe product passes through a plasma auxiliary heating area, and is discharged from a salt liquid outlet of a discharge area; other gases in the cracked gas are discharged from a hearth air outlet, then enter the residual liquid waste heat recoverer and the air waste heat recoverer successively for waste heat recovery, and then are discharged. The device provided by the invention is suitable for treatment of high salt and high concentration organic residual liquid, can make the molten salt form a vitreous body at high temperature, thus completely achieving harmlessness and no generation of dioxin; and the device can discharge salt continuously and stably, the system is not easy to block, and can realize long-term stable operation.

Description

technical field [0001] The invention relates to the field of raffinate treatment, in particular to a plasma cracking device for organic raffinate with high salt concentration. Background technique [0002] With the development of social economy and modern industry, the disposal of an increasing number of various wastes has become an environmental protection issue that countries must face. Problems of development and ecological environment. [0003] The most difficult to deal with among these wastes is the highly salty, high-concentration organic raffinate produced during chemical production and the synthesis of pharmaceutical intermediates. These residual liquids have the characteristics of high organic content and high calorific value; high toxicity and serious environmental pollution; difficult to degrade and difficult to deal with by conventional methods; complex components and difficult to harmless. [0004] Traditional physical treatment, chemical treatment, physicoch...

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Problems solved by technology

[0007] In order to solve the problem that the current high-salt and high-concentration organic raffinate not only produces dioxins but also has unstable salt discharge, the present invention provides a high-salt and high-concentration organic raffinate plasma The cracking device includes a first plasma cracking generator 1, a furnace 2, a residual liquid waste heat recovery device 3 and an air waste heat recovery device 4. A furnace gas outlet is provided on the top of the furnace 2, and a molten salt solution is arranged at the bottom of the furnace 2 in turn. Sealed area, plasma auxiliary heating area and discharge area, there is also a furnace inlet above the molten salt liquid seal area, the gas outlet of the first plasma cracking generator 1 is connected to the furnace inlet, and the discharge area is provided with a salt liquid outlet ;

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