Special equipment for collecting flue gas generated by yellow phosphorus

Abstract

The invention discloses special equipment for collecting flue gas generated by yellow phosphorus. The special equipment comprises an electric furnace, a washing tower, a slag pool and a discharge chimney, wherein a slag outlet smoke exhaust hood is arranged on the outer wall of the electric furnace, the slag outlet smoke exhaust hood is communicated with the discharge chimney through a slag outletsmoke pipe; the washing tower is communicated with the discharge chimney through a refined tail gas smoke pipe, and the slag pool is communicated with the discharge chimney through a slag quenching steam smoke pipe. In the present invention, through the reconstruction of a deslagging structure of a yellow phosphorus electric furnace, the steam generated by the quenching slag can be collected andthen discharged at high altitude, and the slag pool is covered and sealed; moreover, the transformed phosphorus refining tail gas is washed and then is merged into the slag quenching steam chimney, and the smoke at the slag outlet of the yellow phosphorus electric furnace is directly merged into the slag quenching steam chimney after being collected, so that only one discharge chimney is arrangedin the whole exhaust structure, the discharge index meets the environmental protection requirement, and the cleanliness of the working environment is greatly improved.

Description

technical field [0001] The invention relates to the technical field of yellow phosphorus production flue gas collection, in particular to a special equipment for yellow phosphorus production flue gas collection. Background technique [0002] Yellow phosphorus in the electric furnace method is to mix phosphate rock, coke and silica in a certain proportion and then put them into a closed electric furnace. The electric energy input by the electrodes will heat the charge to 1300-1500°C to melt the charge and produce a chemical reaction. Phosphorus pentoxide in phosphate rock is reduced to elemental phosphorus, and the phosphorus-containing steam is exported from the gas pipe on the top of the furnace, and the finished yellow phosphorus is obtained through water washing, condensation and refining, and the rest of the molten charge is regularly discharged from the bottom of the electric furnace. [0003] At present, most yellow phosphorus production enterprises usually use the wat...

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Problems solved by technology

[0003] At present, most yellow phosphorus production enterprises usually use the water quenching process to treat the slag, so that the slag is directly directed into the slag pool. Due to the high temperature of the slag, when the slag contacts with water, a large amount of slag quenching steam will be generated, and because the slag pool The sky above is an open structure, and a large amount of white smoke will rise at this time, resulting in poor visibility of the on-site operating environment, and the inability to clearly observe the process and results of slag quenching. In addition, the slag steam cannot be discharged uniformly and orderly, and thus cannot meet the requirements. The current environmental protection requirements have reduced the cleanliness of the environment for slag operations

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