| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f1347ec805fe65abf2c7e26aed42e483
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_26bf403649500c4d147d2df3745f6872
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2c49005e824cf069287fd2016fa07b99 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F5-025
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2305-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2103-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2305-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2103-365
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-5254
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2209-06 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F5-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-281 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F103-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F101-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-52 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F5-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-66 |
| filingDate |
2017-07-28^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ffc1d34c1b27364fda1ff05247e525e3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_27bb6c097e539c3c29796720621ba139 |
| publicationDate |
2018-02-08^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2018026641-A1 |
| titleOfInvention |
Process for removing silica from produced water and other wastewater streams |
| abstract |
An oil or gas recovery process (10) is disclosed where resulting produced water includes silica. The process entails removing silica from the produced water via a two-stage process. In the first stage, magnesium oxide is injected into a Magnesium Dissolution Reactor (18) and mixed with the produced water to dissolve magnesium. Effluent from the Magnesium Dissolution Reactor (18) is directed downstream to a warm lime softener (22) where one or more alkaline chemicals are added to the produced water to raise the pH to approximately 10.0 to 11.5. Here, silica is co-precipitated with magnesium hydroxide and/or adsorbed onto magnesium hydroxide precipitates. |
| priorityDate |
2016-08-01^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |