http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103642951-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3ba41165bd40dfb91f101da3f5f3f9c9 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C14C3-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G37-08 |
| filingDate | 2013-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_197b51868d574f8f81711c145eb6f26a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_142d5db31a6a2992597913ca84c95ab9 |
| publicationDate | 2015-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103642951-B |
| titleOfInvention | Method and device for producing chromium tanning agent by using oxidized waste liquid obtained from S wax production |
| abstract | The invention discloses a method and device for producing a chromium tanning agent by using oxidized waste liquid obtained from S wax production. The method comprises the steps of carrying out acidification and two-stage oxidation on raw materials, namely lignite wax, sodium bichromate, chromic anhydride (chromium trioxide, CrO3) and sulfuric acid, so as to obtain the oxidized waste liquid; treating the oxidized waste liquid by using glucose serving as a reducing agent in a manner that glucose cooperates with sodium bichromate, so as to obtain a chromium tanning solution; drying and dewatering the chromium tanning solution, thereby obtaining the chromium tanning agent. The device comprises an oxidized waste liquid storage tank, an oxidized liquid reduction device, a chromium tanning agent recovery device, a high-position liquid supplying device and a supporting liquid distribution device. According to the method, the chromium tanning agent (alkaline chromic sulfate-chromium powder tanning agent) is prepared through reducing the chromium-containing oxidized waste liquid, formed during the production of S wax from lignite wax, by using glucose which cooperates with sodium bichromate, and tanned leather is plump, soft and elastic. According to the method and the device, the process is simple and energy-saving, the consumption of sulfuric acid and glucose is low, and the device is easy to implement, so that the large-scale, continuous and automated production can be realized. |
| priorityDate | 2013-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.