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Method for producing technical grade ribose phosphate, food grade ribose phosphate and industry ammonium diacid phosphate using wet-process ribose phosphate

A technology of industrial monoammonium phosphate and wet-process phosphoric acid, which is applied in the field of phosphorus chemical industry, can solve the problems of removing impurities, unable to purify comprehensively and deeply, and achieve the effect of increasing added value, good adaptability and application prospect, and reducing energy consumption.

Active Publication Date: 2009-11-11
中化重庆涪陵化工有限公司
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AI Technical Summary

Problems solved by technology

[0008] Using only one method cannot comprehensively and deeply purify and remove impurities, nor can industrial-grade phosphoric acid, food-grade phosphoric acid and industrial monoammonium phosphate be obtained from one process at the same time

Method used

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  • Method for producing technical grade ribose phosphate, food grade ribose phosphate and industry ammonium diacid phosphate using wet-process ribose phosphate

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0029] Such as figure 1 Shown, a kind of method of the present invention prepares industrial-grade phosphoric acid, food-grade phosphoric acid and industrial monoammonium phosphate with wet process phosphoric acid, it is characterized in that carry out as follows:

[0030]Step 1, the wet-process phosphoric acid is pumped into a vertical full-automatic filter press to remove solids, and the clear liquid obtained enters the upper part of the extraction tower, and an extractant of 6 times the volume of the clear liquid is added to the lower part of the extraction tower, and the extractant is Tributyl phosphate, kerosene, and hydrogen peroxide, the ratio of which is 2:1:0.00005, is mixed and extracted at 50°C to form an organic phase (main extractant, dilute phosphoric acid, and some anions, etc.) and a raffinate phase (mainly Dilute phosphoric acid, some cation...

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Abstract

The invention discloses a method for preparing industrial-grade phosphoric acid, food-grade phosphoric acid and industrial monoammonium phosphate with wet-process phosphoric acid. Using wet-process phosphoric acid as raw material, the wet-process phosphoric acid is subjected to a series of chemical precipitation + organic solvent extraction + concentration + recrystallization, etc. Composite purification technology prepares industrial-grade phosphoric acid and food-grade phosphoric acid respectively; at the same time, the present invention uses partially purified dilute phosphoric acid to prepare industrial monoammonium phosphate. The co-production of industrial-grade phosphoric acid, food-grade phosphoric acid and industrial monoammonium phosphate in the present invention enables rational graded utilization of wet-process phosphoric acid, increases the added value of phosphorus, and further develops downstream industrial-grade and food-grade phosphates.

Description

technical field [0001] The invention belongs to the phosphorus chemical industry. Specifically, it is a method of preparing industrial monoammonium phosphate, industrial-grade phosphoric acid and food-grade phosphoric acid by using wet-process phosphoric acid as a raw material and using compound purification technologies such as chemical precipitation, organic solvent extraction, concentration, and recrystallization. Methods. Background technique [0002] Phosphorus chemical industry (referred to as phosphorus chemical industry) uses phosphate rock as raw material to produce various phosphorus-containing products (mainly including elemental phosphorus, phosphides, phosphoric acid and its salts, phosphate esters, organophosphorus pesticides, phosphate fertilizers, etc.) through physical and chemical processing. industry. For nearly half a century, due to the wide application of products in chemical industry, light industry, food, pharmaceutical, fire protection and other fie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/46C01B25/28
Inventor 冯永刚盛勇蹇明周佩姜贵华
Owner 中化重庆涪陵化工有限公司
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