A device and method for granulating and repyrolysis gasification of water-containing oil residue

Abstract

The invention discloses a device and method for granulating and repyrolysis gasification of water-containing oil residue. The device includes a powder quantitative conveying system, an oil residue continuous conveying and feeding system, a preliminary mixing system, an oil residue modified heating and mixing system, Oil residue cooling and crushing granulation system and light oil recovery system; oil residue continuous conveying and feeding system, powder quantitative conveying system, and preliminary mixing system to complete the feeding and proportioning of water-containing oil residue and pyrolysis powder; The permanent heating and mixing system completes the heating and mixing of uniformly mixed materials; the oil residue cooling and crushing granulation system completes the cooling and cooling of the mixed materials and normal temperature pulverization and grinding, and the fine materials can directly enter the reactor for pyrolysis and gasification reaction; the light oil recovery system Complete the recovery and utilization of light oil components; through this device and method, the oil residue produced by pyrolysis and gasification and the pyrolysis powder are circulated in a closed circuit, which not only solves environmental protection problems, but also recycles waste solids containing carbon. The device has obvious advantages in design, manufacture and operation, and has obvious economic benefits.

Description

technical field [0001] The invention belongs to the field of energy and chemical industry, and in particular relates to a device and method for granulating and then pyrolyzing and gasifying water-containing oil residue. Background technique [0002] It is very difficult to deal with the oil residue produced in coal pyrolysis or pyrolysis-gasification process of producing coal tar with coal as raw material. Most enterprises adopt the method of storage, which brings great environmental protection risks. Therefore, it is necessary to seek a safe, Reliable, advanced, economical and suitable for coal pyrolysis or pyrolysis-gasification to produce coal tar with coal as raw material, a new process that produces oil residue characteristics and current status, and performs harmless treatment of the generated oily and water-containing waste residue, and at the same time Guaranteed to obtain certain economic benefits. [0003] The powder produced by pyrolysis and oil-containing water ...

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Problems solved by technology

[0007] 1. The coal pyrolysis or pyrolysis-gasification process of producing coal tar from coal is a continuous production process. Due to the high-viscosity physical characteristics of the oil residue, intermittent mixing makes storage of the oil residue difficult. The cost of equipment is greatly increased;

[0008] 2. The powder produced in the process of coal pyrolysis or pyrolysis-gasification to produce coal tar with coal as raw material has strong adsorption and cannot be well utilized, resulting in waste of resources and environmental pollution;

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