http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108455680-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B7-012 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25B1-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G49-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23G1-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D3-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G49-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B7-01 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25B1-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D3-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23G1-36 |
| filingDate | 2018-03-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-01-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-01-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108455680-B |
| titleOfInvention | Environment-friendly resource utilization method of steel pickling waste liquid |
| abstract | The invention discloses a green resource utilization method of steel pickling waste liquid, which specifically comprises the following steps: neutralizing the low-concentration pickling waste liquid by using inorganic alkali to obtain ferric hydroxide or ferrous hydroxide precipitate and low-concentration brine; carrying out iron separation on the high-concentration pickling waste liquid to obtain recovered acid and an acid-containing iron salt solution; adding an acid-containing iron salt solution after the ferric hydroxide or ferrous hydroxide precipitate is dehydrated to obtain a high-concentration iron salt solution; concentrating the low-concentration brine to obtain strong brine and reusable water; electrolyzing strong brine to prepare chlorine and inorganic alkali solution; the inorganic alkaline solution is circularly used for neutralizing the pickling waste liquid; introducing chlorine gas into the recovered acid to improve the concentration of the hydrochloric acid, and recycling the concentrated recovered acid to a pickling line; chlorine gas is introduced into the high-concentration iron salt solution for preparing the flocculating agent. The invention has the advantages that: the method is expected to greatly improve the utilization rate of the pickling waste liquid, has no emission of three wastes of gas, liquid and solid in the whole process, and is economical, green and environment-friendly. |
| priorityDate | 2018-03-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 62.