Spiral push type low temperature pyrolysis carbonation furnace

Abstract

The invention discloses a spiral push type low temperature pyrolysis carbonation furnace which comprises a bracket and a furnace body, wherein the furnace body is provided with a feed port and a discharge hole; the furnace body comprises an inner heating cylinder and an outer heating cylinder which are sleeved together; the tail end of the inner heating cylinder penetrates out of the outer heating cylinder; the tail end of the inner heating cylinder is provided with an tail gas outlet; the outer heating cylinder is provided with a high temperature smoke gas inlet and a high temperature smoke gas outlet; a plurality of deflectors are misplaced on the inner wall of the outer heating cylinder and the outer wall of the inner heating cylinder; and a plurality of hollow material transportation screws penetrate through the furnace, and the inside of the furnace body is provided with an electricity or smoke gas heating device. Because a double-layer tube-in-tube structure and a spiral push type pyrolysis carbonation mode are adopted and the tail gas outlet is arranged at the tail end of the inner heating cylinder, the spiral push type low temperature pyrolysis carbonation furnace has the characteristics that raw material adaptability is wide and a structure is simple, tail gas waste heat and low-grade pyrolysis carbonized gas can be fully utilized, thermal efficiency is high, and the like.

Description

technical field [0001] The invention relates to a carbonization furnace, in particular to a screw-propelled low-temperature pyrolysis carbonization furnace. Background technique [0002] Biomass energy accounts for 14% of the world's total energy consumption, ranking fourth after oil, coal and natural gas. As a renewable energy, it has the characteristics of low sulfur, low nitrogen, high volatile content, high ash coke activity, zero net CO2 emission, etc., and has unique advantages in energy utilization and environmental protection. [0003] Biomass pyrolysis carbonization technology is one of the promising biomass energy utilization technologies. According to the different pyrolysis carbonization temperatures, biomass pyrolysis carbonization processes can be divided into low temperature Three kinds of high temperature pyrolysis. Biomass low-temperature pyrolysis carbonization passes biomass raw materials through a pyrolysis carbonization device to generate pyrolysis gas...

AI Technical Summary

Problems solved by technology

However, the current low-temperature pyrolysis and carbonization furnaces have disadvantages such as single processing of biomass raw materials, low yield of biomass charcoal, waste heat of tail gas, and insufficient utilization of low-grade pyrolysis and carbonization gases.

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