发明名称 |
Stable dispersions of metal passivation agents and methods for making them. |
摘要 |
A process for passivating contaminating metal on a hydrocarbon cracking catalyst is provided. The catalyst is contacted within a hydrocarbon catalytic cracking unit with a stabilized dispersion. The dispersion comprises a fluid vehicle, a dispersion agent, and finely milled particles of one or more metals or metal compounds for passivation of metal-contaminated cracking catalysts. The dispersion is preferably produced by a process wherein an agitated media mill is loaded with comminuting media, fluid vehicle, dispersion agent and particles of a metal or metal compound for passivation of metal-contaminated cracking catalysts. The comminuting media, fluid vehicle, and particles are then agitated until the particles are reduced in size by at least 10% and have a volumetric average particle size of less than 0.5 microns. |
申请公布号 |
ZA9706852(B) |
申请公布日期 |
1998.03.19 |
申请号 |
ZA19970006852 |
申请日期 |
1997.07.31 |
申请人 |
ANZON, INC.;JOHN R. MCLAUGHLIN |
发明人 |
JOHN R. MCLAUGHLIN;PHILIP S. PODWIRNY;JOHN C. MORLEY |
分类号 |
B01J38/00;B01J20/34;B01J37/00;B01J38/48;B01J38/52;B01J38/68;B02C17/00;B02C17/20;C10G11/02;C10G11/18 |
主分类号 |
B01J38/00 |
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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