Solid heat carrier pyrolyzer

Abstract

The invention discloses a solid heat carrier pyrolyzer which comprises a top cover (1), a bed (2) and a rotary mechanism. An annular pyrolysis tank is arranged on the top face of the bed, the top cover covers the pyrolysis tank from the upper side, and a feed inlet (5), a pyrolysis gas outlet (6) and a discharge point communicated with the pyrolysis tank are sequentially arranged in the circumferential direction of the sealed annular area, corresponding to the pyrolysis tank, in the top cover in a spaced mode; in the sealed annular area, one side sector ring area between the discharge point and the feed inlet is a pyrolysis area (D1), and the other side sector ring area is a reheating area (D2) provided with heating air pipes (7). Solid heat carriers in the pyrolysis tank rotate along with the bed and are reheated by a heating device, enter the pyrolysis area after being heated, and are mixed with pyrolysis raw materials and pyrolysized, one part of pyrolysis products serve as pyrolysis finished product and are discharged through the discharge point, and the other part of the pyrolysis products circularly flow back to the reheating area. The pyrolyzer is novel and compact in structure and small in occupied space, and integrates pyrolysis, discharging and solid heat carrier heating and circulation functions.

Description

technical field [0001] The invention belongs to the field of coal chemical industry, and in particular relates to a pyrolyzer. Background technique [0002] In the current low-rank coal pyrolysis process, gas heat carrier or solid heat carrier is usually used as the heating heat source. However, there will be a series of technical problems in the project, such as the large diameter of the pipeline caused by the large amount of heat source gas in the gas heat carrier process, engineering problems such as pipeline preparation, valve selection, and high-temperature equipment selection. The selection of high-temperature explosion-proof equipment in the process of screening of medium-high temperature solid heat carrier, horizontal and vertical transportation of heat carrier, reheating of heat carrier, mixing of heat carrier and coal, etc., system safety and air tightness problems in the whole process , as well as problems such as high failure rate and high energy loss in the who...

AI Technical Summary

Problems solved by technology

However, there will be a series of technical problems in the project, such as the large diameter of the pipeline caused by the large amount of heat source gas in the gas heat carrier process, engineering problems such as pipeline preparation, valve selection, and high-temperature equipment selection. The selection of high-temperature explosion-proof equipment in the process of screening of medium-high temperature solid heat carrier, horizontal and vertical transportation of heat carrier, reheating of heat carrier, mixing of heat carrier and coal, etc., system safety and air tightness problems in the whole process , as well as the high failure rate and high energy loss in the whole process, as well as the pulverization of the porous structure in the pipeline after the evaporation of free water and bound water inside the low-rank coal, etc.

Images