Resin special for decoloration of monosodium glutamate neutralizing solution

Abstract

The invention discloses resin special for decoloration of a monosodium glutamate neutralizing solution, and relates to the technical field of resin treatment. The resin is prepared from the following raw materials in parts by weight: 60 to 70 parts of trifluoroethyl methacrylate, 40 to 50 parts of allyl methacrylate, 30 to 40 parts of divinyl benzene, 25 to 35 parts of pore-forming agent, 10 to 15 parts of polyoxyethylene, 6 to 11 parts of polyacrylamide, 6 to 11 parts of pentaerythritol ester of hydrogenated rosin, 5 to 9 parts of active magnesium oxide, 3 to 6 parts of microcrystalline cellulose, 3 to 6 parts of glutinous rice flour, 2 to 4 parts of tricetanol phosphate, 2 to 4 parts of propylene glycol alginate, 1 to 2 parts of sesbania gum, 1 to 2 parts of initiating agent, 10 to 15 parts of ethanol and 200 to 250 parts of water. The prepared resin is special for decoloration of the monosodium glutamate neutralizing solution, organic pigments in the monosodium glutamate neutralizing solution can be effectively removed, and the decoloration rate is up to 99.5 percent or more, so that the color of a monosodium glutamate product can be remarkably increased; the regenerability is good, the output of wastewater is small, and regenerated resin still has stronger decoloration ability.

Description

[0001] Technical field: [0002] The invention relates to the technical field of resin processing, in particular to a special resin for neutralizing and decolorizing monosodium glutamate. [0003] Background technique: [0004] The pigments in the MSG neutralizing solution are mainly organic pigments of weak acids, which have the characteristics of relatively large molecular weight. If not removed, it will affect the color of MSG products. MSG products on the market show different color levels with yellowing, which is caused by poor decolorization and iron removal. Traditional decolorization adopts secondary activated carbon decolorization. First, powder carbon is used to remove most impurities and pigments, and then granular carbon is used for second decolorization to ensure the quality of monosodium glutamate. However, this method uses many carbon columns and is large in volume. The regeneration of the carbon columns consumes a large amount of acid and alkali, and produces ...

AI Technical Summary

Problems solved by technology

However, this method uses a large number of carbon columns and is large in volume. The regeneration of the carbon column consumes a large amount of acid and alkali and produces a large amount of sewage. Therefore, some manufacturers have begun to use resin to decolorize the MSG neutralization solution.

However, it is still necessary to use activated carbon and resin in combination to achieve the desired decolorization effect

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