Low-temperature dry distillation equipment and method of low-rank coal and oil shale and petroleum residue

Abstract

The invention provides low-temperature dry distillation equipment and method of low-rank coal and oil shale and petroleum residue. The equipment comprises a gas retort gyring main engine, a material and heating porcelain ball mixing spiral feeding machine, and a gas-solid separating box, wherein the material and heating porcelain ball mixing spiral feeding machine is connected with a material inlet end of the gas retort gyring main engine; the gas-solid separating box is connected with a material outlet end of the gas retort gyring main engine; the gas retort gyring main engine adopts a cylindrical structure which is downward obliquely arranged from the material inlet end to the material outlet end; an internal cylinder is arranged at the middle axis of an external cylinder of the dry distillation gyring main engine; and the internal cylinder and the external cylinder are integrally connected from the material inlet end to the material outlet end through a plurality of arc-shaped plates which are axially distributed. The low-temperature dry distillation equipment provided by the invention has the advantages of simple structure, high processing output, heat transfer performance, high efficiency, energy conservation and high purity of gas under dry distillation, can be widely used for low-temperature dry distillation on low-grade fossil energy such as various low-rank coal, low-rank oil shale and petroleum residue, and can produce high-grade products such as coal, coke, shale oil and semi-coke.

Description

technical field [0001] The invention belongs to the field of energy and chemical industry, in particular to low-temperature dry distillation equipment and a low-temperature dry distillation method for low-grade fossil energy. Background technique [0002] Dry distillation generally refers to the process in which solid organic matter is heated in an air-isolated state to undergo a pyrolysis reaction. According to different heating temperatures, it can be roughly divided into low-temperature, medium-temperature, high-temperature and ultra-high-temperature dry distillation. It is commonly used in industry. Coal dry distillation, and Low-temperature dry distillation (500-650°C) can be widely used in low-grade fossil energy such as low-rank coal, oil shale, and petroleum residues. Its products can obtain high-yield tar and gas, and the remaining solids are semi-coke with high carbon content. The dry distillation process has a long history for processing coal, oil shale and petrol...

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a low-temperature carbonization equipment and method for low-rank coal, oil shale, and petroleum residues, and it is necessary to solve the existing low-temperature carbonization equipment and methods of poor safety, poor energy efficiency ratio, low-quality gas production, and a single set of equipment Small production, low oil yield, energy waste, high production cost and other technical problems

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