http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1115026-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5ac595689f28ec52f2187df04f54c4ce |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B11-02 |
| filingDate | 1980-10-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1981-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d236fa91b0e289214415ffa823b32314 |
| publicationDate | 1981-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1115026-A |
| titleOfInvention | Production of chlorine dioxide |
| abstract | ABSTRACT OF THE DISCLOSURE A process is provided for continuously generating a mixture containing chlorine dioxide, chlorine and a neutral alkali metal salt wherein an alkali metal chlorate, a reducing agent selected from the group consisting of methanol and sulfur dioxide, and a strong mineral acid selected from the group consisting of sulfuric acid, hydro-chloric acid and mixtures of sulfuric acid and members of the group consisting of hydrochloric acid and phosphoric acid, are continuously reacted in a single vessel generator-evaporator-crystallizer in proportions to generate chlorine dioxide and chlorine; the temperature is maintained from about 50 to about 100°C.; the acidity of the reaction solution is maintainedwithinthe range of about 2 to about 12 normal; chlorine dioxide and chlorine produced by the reaction are withdrawn from the reactor; water is removed and neutral alkali metal salt of said mineral acid is crystallized in the form of an aqueous slurry containing minor amounts of chlorate, chloride and acid values; the improvement resides in continuously passing the slurry con-taining neutral alkali metal salt crystals into the top of a separatory column, in a downward flow; countercurrently passing a stream of water continuously upwardly through the column at a rate sufficient to effect washing of the down-wardly flowing crystals whereby chlorate, chlorine and acid values recovered therefrom are continuously and substantially completely returned to the reaction of (a) aforesaid; and continuously removing an aqueous slurry of substantially pure neutral alkali metal salt crystals from the bottom of said separatory column. |
| priorityDate | 1976-05-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 41.