External-heating energy-saving and environment friendly rotary carbonization furnace

Abstract

The invention relates to an external-heating energy-saving and environment friendly rotary carbonization furnace; a furnace body (5) consists of at least three independent material passages (21) that are connected with each other through reinforcing plates (22); the left feed end of the furnace body is sealed with a sealing flange (20), and the right feed end of the furnace body is sealed with a material passage expansion sealing device (8); the left and the right ends of a discharge warehouse are sealed with sealing flanges (16, 17); a feeding warehouse (3), the sealing passage (21), the discharge warehouse (9), a fugitive constituent pipeline (10), a combustion chamber (13), a high-temperature smoke gas pipe (12), a space between the inner part of a furnace housing (6) and the outer part of the material passage (21) and a tail gas exhaust pipe (1) are communicated with each other in sequence; and the temperature of the high-temperature smoke gas of heated material is adjusted through an air distributing pipe (15). In the invention, the temperature and heating rate are easy to control when the material is carbonized, and the material is capable of uniformly and sufficiently absorbing heat with low material ablation, high yield and few energy consumption; and the produced carbonized material has good quality.

Description

technical field [0001] The invention relates to a device for producing activated carbon carbonization materials, in particular to an externally heated rotary carbonization furnace. Background technique [0002] Activated carbon is a carbonaceous adsorption material with rich pore structure and huge specific surface area. It has the characteristics of strong adsorption capacity, good chemical stability, high mechanical strength and convenient regeneration. It is widely used in industry, agriculture, national defense, transportation, Medicine and health, environmental protection and other fields. [0003] The carbonization process is one of the important processes in the production of activated carbon. This process is to carbonize the initial carbon-containing raw materials such as woody raw materials, coal, resin, asphalt, etc. The carbonaceous material required for the process is the main preparation and foundation before activation. The carbonized material produced by car...

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Problems solved by technology

[0005] The carbonization converter in the prior art is an internal heating single-cylinder rotary furnace. Under the same production capacity, the material accumulates relatively high in the furnace cylinder, the throwing height is relatively high, the material is heated unevenly, and the rate of wear and breakage is high, and the yield of carbonized products is low. In addition, the direct contact between the heating medium and the raw material to be carbonized during the working process of this rotary furnace will cause the volatile gas combustion flame produced by carbonization to directly contact the raw material. , the outer surface of the carbonized material produces an aperture, which makes it difficult for the next step of the activation process; at the same time, this kind of equipment also needs an external heat source, which consumes a lot of energy

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