Production process for extracting cystine by hair
A production process, the technology of cystine, applied in the chemical industry, can solve the problems of high production cost, poor product quality, low utilization rate of raw materials, etc., and achieve the effect of improving economic value and scientific and reasonable design
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[0035] The invention discloses a production process for extracting cystine from hair, which comprises the following steps: Step 1: preparing crude cystine from animal hair; including a hair hydrolysis stage; a neutralization and decolorization stage once; and a second neutralization and decolorization stage phase and three neutralization phases.
[0036] Step 2: treatment of crude cystine; including centrifugal washing and drying stages and refining and decolorizing stages.
[0037] Step 3: Preparation of finished cystine products, including refining, centrifugal washing and drying, weighing and packaging.
[0038]Step 1: The hair hydrolysis stage is to add the cleaned hair raw material and hydrochloric acid to the reaction vessel according to the feeding ratio of 1 ton of hair: 1.5 cubic meters of hydrochloric acid, and the hydrochloric acid mass concentration for hydrolysis is 30%-32%; feeding is completed Put the manhole cover on the back cover, open the steam valve, keep ...
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