发明名称 |
On-line determination of wax crystallization temperature of waxy solvent stream |
摘要 |
A laser beam reflected by wax crystals is used in determining the wax crystallization temperature of a hot dewaxing solvent upstream of solvent chillers. This is automatically achieved by an on-line method from a remote control point, in which a slipstream of solvent is passed through an attached solvent loop into a sample chamber in the loop, without being exposed to ambient conditions. As the sample is cooled, the beam reflections are detected and indicate the wax to crystallization temperature. Corrective measures can then be taken to prevent fouling of the chillers, if need be.
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申请公布号 |
US6827842(B2) |
申请公布日期 |
2004.12.07 |
申请号 |
US20010000188 |
申请日期 |
2001.10.19 |
申请人 |
EXXONMOBIL RESEARCH & ENGRG. CO. |
发明人 |
BEASLEY BRENT ENGLAND;LACHINE RANDALL STEPHEN |
分类号 |
G01N25/04;G01N21/47;G01N21/55;G01N25/14;G01N33/28;(IPC1-7):C10G73/02;C10G29/20;C10G73/06;C10G73/32;G01K11/06 |
主分类号 |
G01N25/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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