Inverted phosphorus-spraying and pyrophosphoric acid natural-consuming integrated device

Abstract

The invention relates to an inverted phosphorus-spraying and pyrophosphoric acid natural-consuming integrated device, at present, phosphorus combustion is generally realized by conveying melted phosphorus melted by a phosphorus-melting groove into an elevated tank by using a high-pressure pump or compressed air, and enabling the melted phosphorus to flow into a combusting tower by high pressure jetting to be combusted, the combustion of yellow phosphorus is insufficient, and the generated pyrophosphoric acid cannot be effectively treated. The inverted phosphorus-spraying and pyrophosphoric acid natural-consuming integrated device is characterized in that a phosphorus-spraying device (2) is mounted at the bottom of a combusting tower (1) and is connected with a pyrophosphoric acid natural-consuming device (4) through a pyrophosphoric acid pipeline (3). By adopting the inverted phosphorus-spraying and pyrophosphoric acid natural-consuming integrated device, liquid phosphorus is injectedfrom the bottom of the combusting tower, the dangerous link of performing high pressure jetting for combusting after the melted yellow phosphorus at high-risk state is conveyed to the elevated tank byusing the high-pressure pump or the compressed air in the traditional production line is avoided, and the generated pyrophosphoric acid can be duly handled.

Description

technical field [0001] The invention relates to a phosphoric acid production equipment, in particular to an integrated device for inverted phosphorus spraying and pyrophosphoric acid natural consumption. 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. Thermal phosphoric acid refers to phosphoric acid that uses phosphate rock as raw material, firstly processes it into elemental phosphorus, and then processes it with elemental phosphorus; wet-process phosphoric acid refers to phosphoric acid that is directly processed from phosphate rock and inorganic acid as raw materials. In the production of thermal phosphoric acid, the combustion status of yellow phosphorus in the combustion tower has an important impact on the quality of phosphoric acid products and the yield of phosphorus. I...

AI Technical Summary

Problems solved by technology

Although the yellow phosphorus in this method enters the combustion tower by high-pressure injection, the dispersibility is good, but the yellow phosphorus entering the combustion tower is still in the form of drops, and it is difficult to fully contact with the air, which affects the combustion of yellow phosphorus to a certain extent. Effect

Insufficient combustion of yellow phosphorus may cause the color of phosphoric acid products to be yellowish, easy oxides to exceed the standard, yellow smoke from the chimney, and excessive pyrophosphoric acid in the combustion tower.

[0003] For the treatment of pyrophosphoric acid, when cleaning in the prior art, it needs to be shut down first, and workers enter the combustion tower to manually clean it regularly, which increases labor costs and has a great impact on normal phosphoric acid production.

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