A thermal cracking device for Fischer-Tropsch synthesis reaction wax slag and its application method

Abstract

The invention relates to a thermal cracking device for a Fischer-Tropsch synthesis reaction wax residue and an application method of the thermal cracking device. The thermal cracking device is characterized by comprising a rotary kiln with an inner barrel and an outer barrel, wherein the outer barrel sleeves the outside of the inner barrel; a feed end is arranged at the initial end of the inner barrel; an outlet end is arranged at the tail end of the inner barrel and is connected with the initial end of an oil-gas outlet pipe; the tail end of the oil-gas outlet pipe extends out of the tail end of the outer barrel; a helical blade is arranged on the inner wall of the inner barrel; a discharge device is arranged at the outlet end of the inner barrel; the outer wall of the outer barrel is connected with a drive motor through a transmission mechanism; the outer barrel drives the inner barrel to rotate in common through operation of the drive motor; a smoke outlet cover is arranged at the initial end of the outer barrel; a smoke outlet and a residue discharge hole communicated with the inside of the outer barrel are arranged in the smoke outlet cover at interval; a smoke inlet cover is arranged at the tail end of the outer barrel; and a smoke inlet communicated with the inside of the outer barrel is formed in the smoke inlet cover; an overflow plate is arranged at the initial end of the outer barrel and is close to the smoke outlet cover; and a material return device is arranged at the feed end of the inner barrel.

Description

technical field [0001] The invention relates to a pyrolysis device for Fischer-Tropsch synthesis reaction wax slag and a using method thereof. Background technique [0002] In the coal-based indirect liquefaction process, in order to ensure the reactivity of the Fischer-Tropsch catalyst, the catalyst will be regularly discharged and replaced. At the same time, in the refining process of the synthetic liquid product heavy wax, the filter aid used will form a filter cake. , the waste wax slag solids produced by these two processes contain 40-50% of wax components, and the remaining components in the waste wax slag solids are spent catalysts, clay and diatomaceous earth. At present, incineration and thermal cracking technologies are mainly used to recycle the wax components in the solid waste wax slag. However, the existing incineration device and wax slag pyrolysis device easily lead to unstable operating conditions, and the equipment maintenance rate is high, and at the same...

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Problems solved by technology

However, the existing incineration device and wax slag pyrolysis device easily lead to unstable operating conditions, and the equipment maintenance rate is high, and at the same time, it will also have a certain impact on the service life of the equipment

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