Dry distillation furnace and combustion chamber of dry distillation furnace

Abstract

The invention provides a dry distillation furnace and a combustion chamber of the dry distillation furnace. The heating uniformity on carbonization chambers by the combustion chamber can be improved, so that the heated uniformity of coal layers in the carbonization chambers can be improved, and meanwhile the stability of partition walls between the combustion chamber of the dry distillation furnace and the carbonization chambers is improved. The carbonization chambers are arranged on the two sides of the combustion chamber; heat conducting partition walls are arranged between the carbonization chambers and the combustion chamber; the cross section of the combustion chamber is fan-shaped; a plurality of first partition walls distributed in the radial direction at intervals and a wedge-shaped wall are arranged in the combustion chamber, so that the combustion chamber is divided into a plurality of cavity passages, and the overall stability of the combustion chamber is increased; nozzles are arranged at the bottoms of the cavity passages, and are communicated with recycled coal gas and oxidant gas. Compared with the combustion chamber with larger space, the heating uniformity of the cavity passages are better and are also easier to control, then heat transfer uniformity of the carbonization chambers can be improved, and the coal layers in the carbonization chambers are heated more uniformly; two sides of the first partition walls are connected with the heat conducting partition walls on the two sides of the combustion chamber or the wedge-shaped wall, so that the heat conducting partition walls can be additionally supported, and the strength and the stability of the heat conducting partition walls can be improved.

Description

technical field [0001] The invention relates to the technical field of coal dry distillation, in particular to a dry distillation furnace and a combustion chamber thereof. Background technique [0002] As a fossil energy resource, coal has the advantages of being clean, efficient and capable of being comprehensively transformed and utilized, and it is the future development direction. Coal dry distillation-based polygeneration or cascade utilization, in line with the principles of clean, efficient and comprehensive conversion and utilization, has attracted the attention of research and developers, and coal dry distillation as its main process unit has received more attention. [0003] At present, retort furnaces are mainly divided into two types: internal heat type and external heat type. Among them, the external heat type retort furnace is affected by its own heat transfer characteristics, and requires good and uniform heating of the coal seam. Control requirements are hig...

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Problems solved by technology

[0005] The above-mentioned existing carbonization furnace not only has poor heating uniformity for the carbonization chamber, but also, in order to meet the requirements of heat transfer uniformity, the volume of the combustion chamber is small, so that the output of the carbonization furnace is relatively low

[0006] In addition, during the operation of the carbonization furnace, the carbonization chamber is always filled with coal material, and the combustion chamber adjacent to the carbonization chamber is usually a cavity, so the partition wall between the carbonization chamber and the combustion chamber will be affected by a large coal seam. Lateral shear force; but considering the heat transfer requirements, the wall of the partition wall should not be too thick, resulting in poor stability of the partition wall

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