Pulverized coal pyrolyzing furnace with material homogenizing and pressure bearing structure

Abstract

The invention relates to a pulverized coal pyrolyzing furnace with a material homogenizing and pressure bearing structure. The pulverized coal pyrolyzing furnace with the material homogenizing and pressure bearing structure mainly comprises a furnace body, radiant pipes and the material homogenizing and pressure bearing structure, wherein the multiple layers of radiant pipes are arranged in a furnace chamber so as to form an empty area; the material homogenizing and pressure bearing structure is arranged in the empty area, and comprises a support part, a distributing cap and a connecting part;the support part is arranged along a horizontal direction; the head part of the distributing cap is in a circular arc shape; the bottom part of the distributing cap is arranged on the support part; the connecting part is fixed onto a furnace wall and is connected with two ends of the support part through pin shafts so as to fix the support part onto the furnace wall. According to the pulverized coal pyrolyzing furnace with the material homogenizing and pressure bearing structure provided by the invention, the material homogenizing and pressure bearing structure is arranged in the empty area,so that pulverized coal is homogenized and buffered, and the collision loss of equipment and the furnace body caused by the pulverized coal is reduced; meanwhile, a furnace operation pressure bearingability of the furnace body is improved, and an effect on stabilizing the furnace body is achieved.

Description

technical field [0001] The invention relates to the technical field of pyrolysis, in particular to a pulverized coal pyrolysis furnace with a uniform material and a pressure-bearing structure. Background technique [0002] refer to figure 1 and 2 As shown, the granular material (powdered coal) falls directly to the upper surface of the radiant tube or touches and scours the radiant tube to be heated to the reaction temperature, so that the pyrolysis reaction occurs. The main heat transfer methods in the process are heat conduction and heat radiation. Due to the design characteristics of the furnace body, the horizontal interval of the radiant tubes in the local area of ​​the furnace suddenly increases, and there is a large gap area, so that the pulverized coal falling here cannot collide with the radiant tubes well, which will bring The following problems: 1. Since the pulverized coal cannot collide with the radiant tube well, the falling speed cannot be buffered by the ra...

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Problems solved by technology

Due to the design characteristics of the furnace body, the horizontal interval of the radiant tubes in the local area of ​​the furnace suddenly increases, and there is a large gap area, so that the pulverized coal falling here cannot collide with the radiant tubes well, which will bring The following problems: 1. Since the pulverized coal cannot collide with the radiant tube well, the falling speed cannot be buffered by the radiant tube, so that the time for the pulverized coal to pass through the heating furnace is accelerated, which is far less than the optimal shutdown time of the pulverized coal (5-10s ); Secondly, due to the inability to contact the radiant tube, the heating effect of the pulverized coal in this area becomes poor, and finally the pyrolysis reaction cannot be fully carried out, and the product quality is not good; 2. Since the pulverized coal cannot collide well with the radiant tube Contact, the falling speed cannot be effectively buffered, the falling speed becomes faster, the impact on the equipment and the furnace body that hits the collision is increased, and the consumption of the equipment and the furnace body is increased; 3. Since there is no radiant tube structure in the gap area, the The ability of this part to withstand the internal operating pressure of the furnace body is weakened, thereby reducing the ability of the entire furnace body to withstand the internal operating pressure

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