Yellow phosphorus furnace gas high-temperature dust removal system

Abstract

The present invention discloses a yellow phosphorus furnace gas high-temperature dust removal system, which comprises a mechanical dust collector, wherein the mechanical dust collector is provided with a gas inlet, a gas outlet and a dust collection port, the gas inlet is respectively communicated to a yellow phosphorus furnace gas conveying pipe and a nitrogen conveying pipe, the gas outlet is sequentially connected to an anti-dew-condensation device, a filtration device and an ash discharge device, the ash discharge device is further connected to the dust collection port, the yellow phosphorus furnace gas high-temperature dust removal system further comprises a back flushing device and a safety explosion-proof automatic control device, the back flushing device is respectively connected to the anti-dew-condensation device and the filtration device, and the safety explosion-proof automatic control device is respectively connected to the anti-dew-condensation device, the ash discharge device and the back flushing device. According to the present invention, the phenomena of dew condensation and membrane pasting caused by tar of the filtration apparatus can be effectively prevented, the dust removal effect can be improved, and the filtration efficiency is further improved; and with the safety explosion-proof automatic control device, the online monitoring control on the temperature, the pressure and the valve is achieved, and the safety of the system is ensured.

Description

technical field [0001] The invention relates to the technical field of yellow phosphorus production and processing, in particular to a high-temperature dust removal system for yellow phosphorus furnace gas. Background technique [0002] Part of the dust in the yellow phosphorus furnace gas is generated by the dust entrained in the raw material or heated and exploded, and the other part is the volatile compound generated by the chemical reaction of the furnace charge. The volatile compound will condense after the temperature is lowered. The dust particles produced by the former are relatively large, exceeding 10 μm, while the latter has a high degree of dispersion, generally less than 10 μm, and the dust content in the phosphorus furnace gas is generally 50-150g / m3. [0003] Due to the flammability, explosion and poisoning of phosphorus furnace gas, and the high condensation temperature of phosphorus vapor, small and medium-sized phosphorus furnaces generally do not have spec...

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Problems solved by technology

[0003] Due to the flammability, explosion and poisoning of phosphorus furnace gas, and the high condensation temperature of phosphorus vapor, small and medium-sized phosphorus furnaces generally do not have special phosphorus furnace dust removal equipment, which has led to yellow phosphorus production enterprises using traditional processes, with a large amount of by-products Phosphorous sludge, the comprehensive utilization level of the products produced in the whole process route is low, the pollution is serious, and the recovery rate is low (72% to 87% for small devices)

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