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    Rejuvenation of damaged zeolite-supported metal catalysts
    22.
    发明授权
    Rejuvenation of damaged zeolite-supported metal catalysts 失效
    损伤的支持沸石支持的金属催化剂的研究

    公开(公告)号：US3899441A

    公开(公告)日：1975-08-12

    申请号：US32167073

    申请日：1973-01-08

    Applicant: UNION OIL CO

    Inventor： HANSFORD ROWLAND C

    IPC: B01J29/90 ,  B01J11/18 ,  B01J11/16

    CPC classification number: B01J29/90

    Abstract: Zeolite supported Group VIII metal hydrogenation catalysts which have undergone damage by thermal and/or hydrothermal stresses resulting in a maldistribution of the supported metal, are rejuvenated in activity by first hydrating and ammoniating, then calcining in a dry, oxygen-containing gas stream at temperatures controlled between about 500* and 1200*F.

    Catalyst regeneration
    23.
    发明授权
    Catalyst regeneration 失效
    催化剂再生

    公开(公告)号：US3879311A

    公开(公告)日：1975-04-22

    申请号：US35482173

    申请日：1973-04-26

    Applicant: NAT DISTILLERS CHEM CORP

    Inventor： SCHOTT STUART ,  LUM DAVID W ,  MADOR IRVING L

    IPC: C07C69/15 ,  B01J23/96 ,  B01J27/13 ,  B01J37/24 ,  B01J38/64 ,  C07B61/00 ,  C07C67/055 ,  B01J11/18

    CPC classification number: B01J37/24 ,  B01J23/96 ,  C07C67/055 ,  Y02P20/584 ,  C07C69/01 ,  C07C69/15

    Abstract: A process is described for the regeneration of palladium metal catalysts which are useful in the process for the synthesis of esters from olefins, carboxylic acids and molecular oxygen. The regeneration process comprises the following sequential steps: (a) washing the used catalyst with an aqueous hydrochloric acid solution containing hydrazine; (b) partially drying the catalyst to a moisture content of about 65 to 95% of saturation; (c) chlorinating the partially dried catalyst with chloride gas; (d) treating the chlorinated catalyst with moist air to remove excess chlorine and to insure even moisture distribution; (e) reducing the chlorinated catalyst by contact with an aqueous alkaline reducing solution; (f) washing the reduced catalyst to remove residual chlorides; and (g) drying the resulting regenerated catalyst. One particular application for the process is the regeneration of an alumina supported palladium metal-containing catalyst which has been employed in the vapor phase synthesis of unsaturated esters from olefins, organic acids and oxygen.

    Abstract translation: 描述了用于从烯烃，羧酸和分子氧合成酯的方法中的钯金属催化剂的再生方法。 再生方法包括以下顺序步骤：（a）用含有肼的盐酸水溶液洗涤所用的催化剂; （b）将催化剂部分干燥至约65至95％饱和度的水分含量; （c）用氯化气体氯化部分干燥的催化剂; （d）用潮湿的空气处理氯化催化剂以去除多余的氯并确保均匀的水分分布; （e）通过与碱性还原水溶液接触来还原氯化催化剂; （f）洗涤还原的催化剂以除去残留的氯化物; 和（g）干燥所得到的再生催化剂。 该方法的一个具体应用是用于从烯烃，有机酸和氧气气相合成不饱和酯的氧化铝负载的含钯金属的催化剂的再生。

    Regeneration of a coke-deactivated catalyst comprising a combination of platinum,tin and halogen with a porous carrier material
    24.
    发明授权
    Regeneration of a coke-deactivated catalyst comprising a combination of platinum,tin and halogen with a porous carrier material 失效
    含有多孔载体材料的包含铂，钛和卤素组合的焦炭活化催化剂的再生

    公开(公告)号：US3803052A

    公开(公告)日：1974-04-09

    申请号：US22631772

    申请日：1972-02-14

    Applicant: UNIVERSAL OIL PROD CO

    Inventor： HAYES J

    IPC: B01J23/96 ,  B01J38/44 ,  C10G35/09 ,  B01J11/18 ,  C10G35/06

    CPC classification number: B01J23/96 ,  B01J38/44 ,  C10G35/09 ,  Y10S502/517

    Abstract: A deactivated hydrocarbon conversion catalyst, which is a combination of catalytically effective amounts of a platinum group component, a tin component and a halogen component with a porous carrier material, which is free of labile sulfur and which has been deactivated by a deposition of carbonaceous material thereon during a previous contacting with a hydrocarbon charge stock at hydrocarbon conversion conditions, is regenerated by the sequential steps of: (1) burning carbon from the deactivated catalyst at a relatively low temperature with a substantially sulfur-free first gaseous mixture containing relatively small amounts of oxygen, H2O and HCl; (2) treating the resulting catalyst at a relatively high temperature with a second gaseous mixture containing O2, H2O and HCl; (3) purging oxygen from contact with the resulting catalyst; and (4) reducing the resulting catalyst by contacting with a substantially sulfur-free third gaseous mixture containing hydrogen and small amounts of H2O and HCl. Key features of the regeneration method involve: the presence of both H2O and HCl in the gaseous mixtures used in the carbon-burning, oxygen-treating and reduction steps; the use of sulfur-free gaseous mixtures in all of these steps; and the careful control of the mole ratio of H2O to HCl employed in each of these gaseous mixtures.

    Reconditioning system for moving column of reforming catalyst
    26.
    发明授权
    Reconditioning system for moving column of reforming catalyst 失效
    用于移动改性催化剂柱的重新配置系统

    公开(公告)号：US3652231A

    公开(公告)日：1972-03-28

    申请号：US3652231D

    申请日：1969-09-25

    Applicant: UNIVERSAL OIL PROD CO

    Inventor： GREENWOOD ARTHUR R ,  VESELY KENNETH D

    IPC: B01J8/12 ,  B01J38/18 ,  B01J38/26 ,  C10G35/12 ,  B01J9/08 ,  B01J11/18 ,  B01J11/80

    CPC classification number: C10G35/12 ,  B01J8/12 ,  B01J38/18 ,  B01J38/26

    Abstract: A system for effecting the reconditioning of catalyst particles used in the reforming of a hydrocarbon stream which provides a vertically elongated confined chamber that will have the particles flow down between screens of perforated plates in a descending column through a carbon burn-off section and a halogenation section. A preferred design provides for an annularform column of particles with gas flows being out-to-in laterally through the column and, in addition, incorporates a drying section in the lower portion of the chamber. An overall system with a preferred design also combines means for scrubbing the flue gas stream from the burn-off section and returning it to the chamber and, in addition, combines means for continuously recycling a steam-halogen-air stream through the halogenation section.

    Abstract translation: 一种用于实现用于烃流重整中使用的催化剂颗粒的再生的系统，其提供垂直伸长的限制室，其将使颗粒在下降塔中的多孔板的筛网之间通过碳燃烧断面和卤化 部分。 优选的设计提供了一种环形柱状的颗粒，其中气流横向穿过柱，并且还包括在室的下部的干燥部分。 具有优选设计的整体系统还结合了用于洗涤来自燃烧断面部分的烟气流并将其返回到室中的装置，此外，还结合了用于连续循环蒸汽 - 卤素 - 空气流通过卤化部分的装置。

    Regeneration of a coke-deactivated catalyst containing platinum and rhenium
    27.
    发明授权
    Regeneration of a coke-deactivated catalyst containing platinum and rhenium 失效
    含有白金和铑的焦炭去除催化剂的再生

    公开(公告)号：US3642656A

    公开(公告)日：1972-02-15

    申请号：US3642656D

    申请日：1969-10-16

    Applicant: UNIVERSAL OIL PROD CO

    Inventor： HAYES JOHN C

    IPC: B01J23/96 ,  C10G35/09 ,  C10G49/06 ,  B01J11/18 ,  B01J11/04

    CPC classification number: B01J23/96 ,  C10G35/09 ,  C10G49/06

    Abstract: A DEACTIVATED HYDROCARBON CONVERSION CATALYST-WHICH IS A COMBINATION OF A PLATINUM GROUP COMPONENT, A RHENIUM COMPONENT, A HALOGEN COMPONENT AND A SULFUR COMPONENT WITH AN ALUMIA CARRIER MATERIAL, WHICH CONTAINS THE PLATINUM GROUP COMPONENT AND THE RHENIUM COMPONENT IN AMOUNTS SUFFICIENT TO RESULT IN THE ATOMIC RATIO OF PLATINUM GROUP METAL TO REHNIUM METAL BEING GREATER THAN 1:1 AND WHICH HAS BEEN DEACTIVATED BY DEPOSITION OF CARBONACEOUS MATERIALS THEREON DURING A PREVIOUS CONTACTING WITH A HYDROCARBON CHARGE STOCK AT HYDROCARBON CONVERSION CONDITIONS-IS REGENERATED BY THE SEQUENTIAL STEPS OF: (A) STRIPPING SULFUR THEREFROM AT A RELATIVELY HIGH TEMPERATURE WITH A SUBSTANTIALLY SULFURFREE HYDROGEN STREAM; (B) PRUGING HYDROGEN FROM CONTACT WITH THE CATALYST; (C) BURNING COKE FROM THE RESULTING CATALYST AT REALTIVELY LOW TEMPERATURES WITH A SUBSTANTIALLY SULFUR-FREE GAS STREAM CONTAINING A REALTIVELY SMALL AMOUNT OF O2; (D) TREATING THE RESULTING SUBSTANTIALLY CARBON-FREE CATALYST WITH OXYGEN AT A RELATIVELY HIGH TEMPERATURE; (E) PURGING OXYGEN AND WATER FROM CONTACT WITH THE CATALYST WITH AN INERT GAS STREAM; AND (F) REDUCING THE RESULTING CATLAYST BY CONTACTING SAME WITH A SUBSTANTIALLY SULFUR-FREE AND WATER-FREE HYDROGEN STREAM AT AN ELEVATED TEMPERATURE.

    Halide addition and distribution in the reactivation of platinum group catalysts
    28.
    发明授权
    Halide addition and distribution in the reactivation of platinum group catalysts 失效
    在铂族催化剂反应中的添加和分配

    公开(公告)号：US3637524A

    公开(公告)日：1972-01-25

    申请号：US3637524D

    申请日：1968-07-11

    Applicant: ATLANTIC RICHFIELD CO

    Inventor： JOHNSON MARVIN F L ,  GRAFF STUART L

    IPC: C10G49/06 ,  B01J23/96 ,  B01J38/44 ,  B01J11/18 ,  B01J11/80

    CPC classification number: B01J23/96

    Abstract: There is disclosed a method for reactivating a fixed bed of used platinum group metal-alumina catalyst of the type in which the alumina is derived from hydrous alumina predominating in alumina trihydrate. Such catalysts are employed in, for instance, the catalytic reforming of gasoline boiling range hydrocarbons to obtain fuels of high-octane ratings or aromatics. The method for reactivating the catalyst which has declined in activity during use and contains carbonaceous deposits, involves treating the deactivated catalyst at elevated temperatures with an oxygencontaining gas to burn the carbonaceous deposits therefrom. The relatively carbon-free catalyst is contacted under controlled conditions with a gaseous stream containing small amounts of chlorine, in combined or elemental form, oxygen and often water vapor to deposit chloride in a first portion of the catalyst bed. After the chlorine component is added to the catalyst, preferably in a relatively short period of time, the catalyst is then contacted with a gaseous stream containing oxygen and water vapor. This treatment may continue for a longer time than the chlorine treating period and until the chloride deposited on the catalyst is distributed through a major portion of the catalyst bed. Distribution of the chloride is a function of the time, temperature and water vapor partial pressure observed during the treatment and thus the distribution is controlled essentially by kinetics. The extent of water contact with the catalyst is limited by controlling the amount of water in the gaseous streams and the length of the overall treatment.

    Abstract translation: 公开了一种使氧化铝从氧化铝三水合物中占优势的含水氧化铝衍生的二氧化钛类金属 - 氧化铝催化剂的固定床再活化的方法。 这种催化剂用于例如汽油沸程烃的催化重整以获得高辛烷值或芳族化合物的燃料。 在使用期间活性降低且含有碳质沉积物的催化剂再活化方法包括用含氧气体在升高的温度下处理失活的催化剂以从其中燃烧碳质沉积物。 相对无碳的催化剂在控制条件下与含有少量氯的气态物流，以组合或元素形式接触，氧气通常为水蒸汽，以在催化剂床的第一部分中沉积氯化物。 在将氯组分加入到催化剂中之后，优选在较短的时间内，然后使催化剂与含有氧和水蒸汽的气流接触。 该处理可持续比氯处理期更长的时间，并且直到沉积在催化剂上的氯化物分布在催化剂床的主要部分。 氯化物的分布是在处理期间观察到的时间，温度和水蒸气分压的函数，因此分布基本上由动力学控制。 与催化剂接触的水的程度通过控制气流中的水量和总体处理的长度来限制。

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