Method of transferring a passivating agent to or from a cracking catalyst
    8.
    发明授权
    Method of transferring a passivating agent to or from a cracking catalyst 失效
    将钝化剂转移到或来自裂化催化剂的方法

    公开(公告)号:US4257919A

    公开(公告)日:1981-03-24

    申请号:US90182

    申请日:1979-11-01

    IPC分类号: C10G11/02 B01J23/14 B01J23/18

    CPC分类号: C10G11/02 Y10S502/521

    摘要: A passivating agent is added to a cracking catalyst which has not been previously treated with the passivating agent by mixing the untreated cracking catalyst with a refractory material which has been previously treated with a passivating agent. At least a portion of the passivating agent is transferred by inter-particle transfer from the treated refractory material to the untreated cracking catalyst.A passivating agent may also be recovered from a previously treated cracking catalyst which has become contaminated by contacting the contaminated cracking catalyst with a refractory material which has not previously been treated with the passivating agent. At least a portion of the passivating agent will transfer by inter-particle transfer from the contaminated catalyst to the refractory material while the contaminants on the contaminated cracking catalyst will not transfer.

    摘要翻译: 将未经处理的裂化催化剂与先前用钝化剂处理过的耐火材料混合,将钝化剂加入到先前未被钝化剂处理过的裂化催化剂中。 钝化剂的至少一部分通过颗粒间转移从经处理的耐火材料转移到未处理的裂化催化剂。 钝化剂也可以从已经被处理的裂化催化剂中回收,该催化剂已经被污染的裂化催化剂与先前未被钝化剂处理过的耐火材料接触而被污染。 钝化剂的至少一部分将通过颗粒间转移从污染的催化剂转移到耐火材料,同时污染的裂化催化剂上的污染物将不会转移。

    Ore flotation
    10.
    发明授权
    Ore flotation 失效
    矿石浮选

    公开(公告)号:US4622131A

    公开(公告)日:1986-11-11

    申请号:US728910

    申请日:1985-04-30

    IPC分类号: B03D1/012 B03D1/06 C22B3/00

    摘要: In an ore flotation process for recovering copper values from an aqueous slurry the improvement comprises a depressant composition of an amino-substituted carboxylic acid derivative or a mercapto-substituted carboxylic acid derivative in combination with a thiocarbonate derivative.

    摘要翻译: 在用于从含水浆料中回收铜值的矿石浮选方法中,改进包括与硫代碳酸酯衍生物组合的氨基取代的羧酸衍生物或巯基取代的羧酸衍生物的抑制剂组合物。