Preparation of phosphoric acid composite decolorizer and application method thereof

Abstract

The invention discloses a preparation of a phosphoric acid composite decolorizer and an application method thereof. The decolorizer takes phosphoric acid as the raw material; after being diluted to 0.85%, the phosphoric acid is mixed with urea or quaternary ammonium salt; and the mixture reacts at the temperature of 50 DEG C-80 DEG C for 30-60 minutes to obtain the phosphoric acid composite decolorizer solution. In the common sugarcane sulfurous method sugar preparation process, the phosphoric acid composite decolorizer solution replaces industrial phosphoric acid to be added into mixed juice, rough syrup or remelt syrup of brown granulated sugar, and the addition is equivalent to 200-400 mg / kg of P2O5. Compared with the prior art, the invention has the advantages: 1, the invention is suitable for sugarcane sulfurous method process and has strong pertinence; 2, the phosphoric acid composite decolorizer is simple and quick to synthesize; 3, the application of the phosphoric acid composite decolorizer improves the decoloration effect of sugarcane juice and reduces the dosage of other auxiliary clarifying agents (sulphur, phosphoric acid, lime and polyacrylamide).

Description

Preparation and application method of phosphoric acid complex decolorizer technical field The invention relates to a preparation and application method of a phosphoric acid complex, in particular to a preparation and application method of a phosphoric acid complex decolorizing agent. Background technique Most sugarcane sugar factories in my country use the sulfite process. The traditional sulfite clarification process removes pigment substances by increasing the intensity of sulfur fumigation. The increase in the amount of sulfur will easily lead to an increase in the residual amount of sulfur dioxide in the white sugar, affecting food safety. Increasing the amount of sulfur not only increases production costs, but also produces industrial waste, which does not meet my country's overall target requirements for low industrial consumption and low pollution. The technical reform of the sulfite sugar factory is not only to improve the production management, but more importantl...

AI Technical Summary

Problems solved by technology

At present, there is no report on the application of phosphoric acid complex decolorizer in the sugar cane sulfite process