http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-102012206439-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1229111a198f86af4112ecd730b55cd9 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-2982 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C30B29-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-027 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-021 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-03 |
| filingDate | 2012-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7810a5f21491aa09fd3ac42cd8185893 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_341adaf82756749cfa2153764c9c5dc2 |
| publicationDate | 2013-10-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-102012206439-A1 |
| titleOfInvention | Polycrystalline silicon granules and their preparation |
| abstract | Polycrystalline silicon granules having a convexity of 0.850-1.000 and a chlorine content of 10-40 ppmw. A process for the production of polycrystalline silicon granules in a fluidized bed reactor, comprising fluidizing silicon seed particles by means of a gas flow in a fluidized bed, which is heated by means of a heater, wherein by addition of a silicon- and halogen-containing reaction gas by means of pyrolysis elemental silicon is deposited on the hot Keimpartikeloberflächen, whereby the produced polycrystalline silicon granules, wherein by deposition in diameter grown particles and an exhaust gas containing hydrogen halide discharged from the reactor and fresh seed particles are added, characterized in that as a control variable, the concentration of hydrogen halide in the exhaust determined and as control variables, a rate of addition of fresh seed particles and a Heating power of the heater can be controlled to keep the hydrogen halide concentration in the exhaust gas during operation in a previously defined range, far It is characterized in that the polycrystalline silicon granules are particles with a convexity of 0.850-1.000. |
| priorityDate | 2012-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.