http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103739507-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C229-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C227-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C227-40 |
| filingDate | 2013-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103739507-B |
| titleOfInvention | Preparation method of beta-crystal-form lysine hydrochloride |
| abstract | The invention discloses a preparation method of a beta-crystal-form lysine hydrochloride. The preparation method comprises the steps: under a condition that a ratio of a feed-grade lysine hydrochloride to purified water is 1:0.4-0.6, heating to 80-90 DEG C to dissolve, adding 1%-3% of activated carbon for decolorization, filtering, then carrying out direct cooling crystallization of the solution, centrifuging, firstly drying the product by using a boiling bed until the moisture content is 2-4%, then blowing saturated steam into a hopper of the boiling bed for 30-50 minutes, followed by drying the product, and thus obtaining the beta-crystal-form lysine hydrochloride having high product purity and having the quality according with national pharmacopoeia requirements. The preparation method abandons defects of high energy consumption and destruction of high temperature concentration to the amino acid quality in a traditional concentration crystallization method, and ensures the purity of the product; and at the same time, by adopting the boiling bed to be externally added with the saturated steam for combination drying, an alpha-crystal-form or alpha-beta mixed crystal form lysine hydrochloride is effectively allowed to be converted into the beta-crystal-form high-purity product. |
| priorityDate | 2013-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.