| Original document(9 pages) 中文版 |
In a reactor, granular feedstock having particle sizes in the range from about 0.5 to 15 mm is subjected in a moving bed to a countercurrent extraction at a temperature in the range from 20 DEG to 150 DEG C. and under a pressure in the range from 50 to 400 bars by a continuously supplied solvent which is in a liquid or supercritical state. A mixture of valuable substances and solvent is withdrawn from the upper portion of the reactor. The solvent is separated from the valuable substances by a pressure relief and/or temperature rise and is recycled to the reactor. The extraction residue is withdrawn from the lower end of the reactor. Respective locks are used to charge the feedstock into the reactor and to discharge the extraction residue from the reactor. Solvent and an entrainer are supplied to the reactor at different locations. |
Application Number
申请号 |
86106981 |
Application Date
申请日 |
1986.09.13 |
| Title 名称 |
Process and apparatus for extracting valuable substances from granular feedstock |
Publication Number
公开号 |
1012048 |
Publication Date
公开日 |
1987.07.15 |
| Approval Pub. Date |
|
Granted Pub. Date |
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| International Classification 分类号 |
B01D11/02 |
Applicant(s) Name
申请人 |
Metallgesellschaft Aktiengesellschaft (DE) Reuterweg 14, D-6000 Frankfurt am Mai |
| Address 地址 |
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| Inventor(s) Name 发明人 |
Georg Penk;Joachim Wilhelm;Rainer Reimert |
| Attorney & Agent 代理人 |
WU DAJIAN |
| More information 更 多 信 息 |
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