Moving-bed retorting furnace heated comprehensively by radiant tube and circulating airflow

A technology of radiant tube heating and circulating air flow, applied in indirect heating dry distillation, direct heating dry distillation, coke oven, etc. High heat rate, unbreakable effect

Active Publication Date: 2010-05-26
SHENWU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The material moves in the furnace, and the materials are squeezed and collided with each other, and the material is easily broken. After the material is cracked, the air permeability of the material layer is poor and the air flow is not smooth;
[0005] The combustion products in the furnace are directly mixed into the retort gas, so that the retort gas cannot maintain its inherent components, the collected retort gas has many useless components, and the post-processing facilities needlessly increase, the calorific value of the separated retort gas is low, and the utilization value is reduced;
[0006] Low heat transfer rate, uneven material heating temperature

Method used

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  • Moving-bed retorting furnace heated comprehensively by radiant tube and circulating airflow
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  • Moving-bed retorting furnace heated comprehensively by radiant tube and circulating airflow

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specific Embodiment 1

[0041] Specific embodiment one, such as figure 2 As shown, the furnace can be ring-shaped, the hearth and the bottom of the furnace are ring-shaped, and the bottom of the furnace can rotate horizontally in the hearth;

specific Embodiment 2

[0042] Specific embodiment two, such as image 3 As shown, the furnace can also be straight-through (tunnel) shaped, with the hearth being able to move in and out of the hearth at one end.

[0043] The furnace can also be square, and the bottom of the furnace can move back and forth inside the furnace. Or take other shapes.

[0044] see you again figure 1 , The bottom of the furnace is with an overhead layer structure, and the overhead layer of the furnace bottom is supported by the steel structure bracket of the furnace bottom. Lay steel plates on the overhead layer, and lay heat insulation material on the bottom of the overhead layer (that is, on the steel structure bracket of the furnace bottom).

[0045] Bottom steel structure brackets, supporting rollers, guiding (or centering) devices, driving devices, tracks, etc. constitute the furnace bottom machinery. The driving device can be electric machinery, also can be hydraulic motor or hydraulic cylinder etc.

[0046] Th...

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PUM

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Abstract

The invention discloses a moving-bed retorting furnace heated comprehensively by a radiant tube and a circulating airflow, comprising a hearth formed by furnace walls, a furnace top and a furnace bottom. The furnace bottom is a circular or through movable furnace bottom; and the upper space of the hearth is provided with a radiant tube heater. By adopting the radiant tube heater to heat, burning products can not be doped in retorting gas, generated retorting oil can keep inherent components, and the retorting gas has high heat value. The furnace bottom is in an overhead layer structure, and afurnace gas-circulating device is arranged between the overhead space and the hearth space above the furnace bottom. The invention has high heat-transferring rate and uniform material-heating temperature and is widely used to retort materials, such as oil shale, coal, lignite, oil sand, plants, and the like.

Description

technical field [0001] The invention relates to a moving bed dry distillation furnace, in particular to a moving bed dry distillation furnace which is comprehensively heated by a radiant tube and a circulating air flow. Background technique [0002] At present, carbonization furnaces for processing oil shale, coal, lignite, oil sand and other substances include vertical circular furnaces, vertical square furnaces and horizontal cylindrical furnaces. The heating methods include gas as heat carrier and solid as heat. There are two types of carrier heating. As the heat carrier gas, some are the hot gas obtained by direct combustion in the carbonization furnace, and some are the gas heated in another heating furnace. The hot gas passes through the material layer to make the material heated and carbonized. The solid as the heat carrier can be semi-coke that is burned and heated in the retort furnace, or sand that is heated in another heating chamber. The hot solid is mixed with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B47/20C10B49/06
Inventor 吴道洪
Owner SHENWU TECH GRP CO LTD
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