Yellow phosphorus furnace

Abstract

The invention relates to the field of phosphoric acid preparation equipment, in particular to a yellow phosphorus furnace. The furnace comprises a yellow phosphorus furnace body, a storage structure, a gasification structure, a spray pipe and a liquefaction structure; and the gasification structure penetrates through the interior of the yellow phosphorus furnace body. Liquid yellow phosphorus in the gasification structure is gasified through the internal temperature of the yellow phosphorus furnace body; meanwhile, on-off of the liquefaction structure is controlled through the internal pressure of the gasification structure, so that gasified gas is effectively prevented from entering the interior of the storage structure, and a gasification pipe is prevented from being damaged by high pressure; meanwhile, the gasification pipe is spirally distributed in the horizontal direction, so that the liquid yellow phosphorus liquid is located at the bottom end of the gasification pipe, the liquid yellow phosphorus is effectively prevented from being discharged, and the gasification effect is better; and the gasification structure drives the liquefaction structure to control gas in the yellow phosphorus furnace body to enter the liquefaction structure to heat yellow phosphorus in the storage structure, so that the yellow phosphorus in the storage structure is always in a liquid state, and the utilization efficiency of heat energy in the yellow phosphorus furnace body is improved.

Description

technical field [0001] The invention relates to the field of phosphoric acid preparation equipment, in particular to a yellow phosphorus furnace. Background technique [0002] Phosphoric acid is an important part of the chemical industry and an important basic chemical raw material. The production methods of phosphoric acid are divided into thermal phosphoric acid and wet phosphoric acid. At present, liquid phosphorus combustion method is mostly used to produce thermal phosphoric acid. Among them, the molten raw material yellow phosphorus is safely transported through the water level difference in the low-level molten phosphorus tank, and enters the furnace from the bottom of the combustion furnace for combustion. Thermal phosphoric acid has the advantages of high product concentration and less impurities, and can be used to manufacture food and industrial grade phosphoric acid. Salt products. [0003] However, a coil yellow phosphorus gasification combustion furnace disclo...

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Problems solved by technology

[0003] However, a coil yellow phosphorus gasification combustion furnace disclosed in the patent application number 201310747156.1 uses molten raw material yellow phosphorus to be transported through a water level difference in a low-level phosphorus melting tank. For large-scale yellow phosphorus furnaces during the gasification process If the liquid phosphorus raw material continues to enter the inside of the gasification tube, due to the high temperature in the furnace, the inside of the gasification tube will continue to gasify. When the gasification speed exceeds the injection speed of the nozzle, the gasified gas will easily enter the phosphorus melting tank Internally, it will cause the gasification of liquid phosphorus, resulting in the waste of phosphorus liquid, and even cause an explosion. At the same time, it will affect the state of phosphorus inside the low-level phosphorus melting tank in cold seasons. When phosphorus solidifies, it will easily affect the transportation, and even cause pipeline blockage, thereby reducing processing quality

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