Combustion gas heating system of micro-negative pressure reaction kettle

Abstract

The invention discloses a combustion gas heating system of a micro-negative pressure reaction kettle. The combustion gas heating system is provided with a combustion chamber, and further comprises a combustion gas inlet pipe, an air inlet pipe and a mixed chamber used for mixed combustion of combustion gas and air, wherein cracking furnaces are arranged at the upper part of the combustion chamber; the combustion gas inlet pipe, the air inlet pipe and the mixed chamber are arranged at the lower part of the combustion chamber; a partition is arranged at the top of the mixed chamber; a plurality of rows of partition through holes are formed in the partition; one ends of the combustion gas inlet pipe and the air inlet pipe are communicated with the mixed chamber, and have upward gradient at the communication parts with the mixed chamber; the combustion chamber is formed by a housing; a high-temperature-resistant heat preservation material layer is arranged on the surface of the housing; fans are arranged at the upper part of the combustion gas inlet pipe, at the upper part of the combustion gas inlet pipe, and at the top of the combustion chamber. The combustion gas heating system has the benefits as follows: a large batch of rubber fragments are cracked by the cracking furnaces, so that the heating is more uniform, the cracking of the stacked rubber blocks is more complete, and the conversion efficiency is higher; the combustion gas heating system forms a micro-negative pressure environment, and is uniform in flame distribution, and better in thermal cracking effect.

Description

technical field [0001] The invention relates to the technical field of waste rubber cracking related equipment, in particular to a gas heating system of a micro-negative pressure reactor. Background technique [0002] As the number of cars in our country increases year by year, a large number of waste rubber tires are produced every year. These waste rubber tires are not only difficult to degrade when buried in the ground, but also cause pollution to the environment. However, waste rubber tires are full of treasures and enjoy the reputation of "black gold"; 12% steel wire contained in waste rubber is the raw material of high-quality spring steel, 28% to 35% of which can be reduced to carbon black, 49% to 56% Revertable to fuel oil. The current method of processing waste rubber tires is to use waste rubber cracking equipment to crack them, and then recycle the obtained steel wires, reduced carbon black and fuel oil. As we all know, waste rubber can be cracked to produce gas...

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Problems solved by technology

At present, although various equipment related to waste rubber cracking are reported, most of the equipment requires high temperature for cracking, so that the cracking produces more combustible gases, resulting in low oil yield and poor quality. In addition, It is also easy to cause coking inside the equipment, shorten the service life, and increase production energy consumption; if the pyrolysis temperature is lowered, the pyrolysis will not be complete, and there will be more uncracked substances attached to the obtained carbon black, which will reduce the quality of carbon black

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