Waste tire continuous cracking equipment and technology for preventing generation of dioxin and catching carbon black

Abstract

The invention relates to a waste tire continuous cracking equipment and technology for preventing generation of dioxin and catching carbon black. The equipment comprises a stock bin, a mixed-feeding spiral conveyor, a preheating furnace, a continuous cracking device, a vacuumizing device, an oil-gas treatment device and a carbon black catching device, wherein the stock bin is connected with the mixed-feeding spiral conveyor, the preheating furnace and the continuous cracking device sequentially; the preheating furnace sequentially comprises a heating section, a sealing section, a forward thrust section and a discharging section from the flowing direction of a raw material, a spiral pusher is respectively arranged in the heating section and the forward thrust section, and a spiral pusher is not arranged in the sealing section; the continuous cracking device comprises a first cracking unit at the heating temperature of 340-360DEG C, a second cracking unit at the heating temperature of 440-460DEG C, and a third cracking unit at the heating temperature of 540-560DEG C, which are connected in sequence. According to the equipment and technology, the generation of dioxin in the treatment process of waste tires can be effectively prevented, the carbon black in a waste gas collection tube can be caught, the activity and quality of carbon black can be improved, and the continuous cracking production of waste tires can be realized.

Description

technical field [0001] The invention relates to the technical field of waste tire treatment, in particular to a waste tire continuous pyrolysis equipment and process for preventing dioxin generation and capturing carbon black. Background technique [0002] The thermal cracking of waste tires is the last key step in the comprehensive utilization of waste tires and turning waste into treasure. For a long time, it has received great attention from all walks of life, and many researchers have done a lot of research and experimental work for it. However, due to various reasons, an ideal large-scale, industrialized, continuous production line that meets environmental protection requirements and is economically feasible has not yet been formed. So far, the existing pyrolysis furnaces capable of continuous production focus on the separation of oil for the cracking of waste tires, and the quality of the finally obtained carbon black is not ideal, while the intermittent production py...

AI Technical Summary

Problems solved by technology

In particular, since the carbon black produced by the pyrolysis of waste tires is micron-sized to nano-sized particles that are extremely difficult to be wetted, it is difficult to capture the carbon black in the exhaust gas

Experiments have proved that even if the entire cracking system is running in a closed environment, there will still be a lot of carbon black discharged into the air with the wind from the fan at the final system outlet. To capture carbon black, there is still a few tenths of percent of carbon black that cannot be collected in the end (because the efficiency of the bag filter is about 99.5%). The tire capacity is about 30,000 tons), and dozens of tons of carbon black are discharged into the air, which pollutes the air and causes a waste of resources

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