公开(公告)号：US3766090A

公开(公告)日：1973-10-16

申请号：US3766090D

申请日：1971-07-19

Applicant: BERGWERKSVERBAND GMBH

Inventor： JUNTGEN H ,  KNOBLAUCH K

IPC: B01D53/02 ,  C01B31/08 ,  C01C1/242 ,  B01J11/02 ,  B01D15/06

CPC classification number: B01D53/02 ,  C01B32/36 ,  C01C1/242 ,  Y10S502/517

Abstract: PROCESS FOR REGENERATING ACTIVE CARBON LOADED WITH SULFURIC ACID FOLLOWING ITS USE AS AN ADSORBENT FOR SO2 FROM EXHAUST GASES WHICH COMPRISES IN A FIRST STEP WASHING OUT THE MAJOR AMOUNT OF ADSORBED SULFURIC ACID WITH DILUTE SULFURIC ACID AND/OR MATER AND IN A SECOND STEP WASHING OUT THE REMAINING SULFURIC ACID USING WATER AND GASEOUS AMMONIA OR AMMONIA WATER AS WASHING AGENT.

公开(公告)号：US3725300A

公开(公告)日：1973-04-03

申请号：US3725300D

申请日：1970-10-07

Applicant: STAUFFER CHEMICAL CO

Inventor： STAMM W

IPC: C07F9/40 ,  B01J11/70 ,  B01J11/02

CPC classification number: C07F9/4015 ,  Y02P20/584

Abstract: A process is provided for the preparation of Alpha , Beta olefinically unsaturated alkyl phosphonate esters by the dehydrohalogenation of the corresponding Beta -haloalkyl phosphonate esters comprising contacting the haloalkyl phosphonate with basic alumina. A method is also provided for the regeneration of spent alumina catalyst by heating to a temperature in excess of 200* C.

Abstract translation: 提供了通过相应的β-卤代烷基膦酸酯的脱卤化氢制备α，β-烯属不饱和烷基膦酸酯的方法，包括使卤代烷基膦酸酯与碱性氧化铝接触。 还提供了一种通过加热到超过200℃的温度来再生废氧化铝催化剂的方法。

公开(公告)号：US3720626A

公开(公告)日：1973-03-13

申请号：US3720626D

申请日：1970-06-19

Applicant: DEGREMONT

Inventor： BENZARIA J ,  ZUNDEL C

IPC: B01J20/34 ,  C01B31/08 ,  B01J11/02

CPC classification number: C01B32/36

Abstract: Improvement in the process for the regeneration of spent activated carbon combining an aqueous alkaline solution and an organic solvent, such as a lower alcohol. The spent carbon is first contacted in a column under practically static conditions, and at between 25* and 90*C for 30 minutes to 2 hours with an aqueous alkaline solution, preferably 0.5 to 25 percent by weight sodium hydroxide. An alkaline treatment prepares the elution action of the solvent. The solvent is a lower alcohol, preferably isopropanol combined with water. The solvent is then removed by steam and the carbon is regenerated by an acid treatment. Complete regeneration is obtained.

Abstract translation: 用于将碱性水溶液和有机溶剂如低级醇组合的废活性炭再生过程的改进。

公开(公告)号：US3714040A

公开(公告)日：1973-01-30

申请号：US3714040D

申请日：1970-10-16

Applicant: STAUFFER CHEMICAL CO

Inventor： JORDAN R ,  WILSON N ,  GOLDMAN T

IPC: C01B7/00 ,  C01B7/01 ,  C01B31/08 ,  B01J11/02

CPC classification number: C01B7/01 ,  C01B32/36

Abstract: A process for regenerating activated carbon beds saturated with chlorine is described herein. The process involves injecting sulfur dioxide into the beds. The sulfur dioxide is oxidized by the chlorine to sulfuric acid. The injection of sulfur dioxide is continued until the effluent contains the same amount as the input.

Abstract translation: 本文描述了用氯再生活性炭床的方法。 该过程涉及将二氧化硫注入床中。 二氧化硫被氯氧化成硫酸。 继续注入二氧化硫，直到流出物含有与输入物相同的量。

公开(公告)号：US3699054A

公开(公告)日：1972-10-17

申请号：US3699054D

申请日：1971-04-29

Applicant: CELANESE CORP

Inventor： ORGAN GLENN E ,  WILE RONALD H

IPC: B01J23/94 ,  C07C29/149 ,  B01J11/02 ,  B01J11/04 ,  B01J11/68

CPC classification number: B01J23/94 ,  C07C29/149 ,  Y02P20/584 ,  C07C31/20 ,  C07C31/207

Abstract: A SPENT COPPER CHROMITE HYDROGENATION CATALYST IS RESTORED TO A CATALYTICALLY ACTIVE CONDITION BY A PROCESS WHICH COMPRISES (A) WASHING ORGANIC MATERIALS THEREFROM WITH A VOLATILE SOLVENT, (B) DRYING THE WASHED CATALYST TO REMOVE THE VOLATILE SOLVENT THEREFROM, AND (C) HEATING THE WASHED, DRIED CATALYST IN AN ATMOSPHERE COMPRISING MOLECULAR OXYGEN AT A CONTROLLED TEMPERATURE.

公开(公告)号：US3676364A

公开(公告)日：1972-07-11

申请号：US3676364D

申请日：1970-09-23

Applicant: DU PONT

Inventor： COATES JOHN STUART

IPC: B01J23/94 ,  B01J25/02 ,  B01J38/62 ,  B01J38/64 ,  C07C29/17 ,  B01J11/30 ,  B01J11/02

CPC classification number: C07C29/172 ,  B01J23/94 ,  B01J25/02 ,  B01J38/62 ,  B01J38/64 ,  Y02P20/584 ,  C07C31/207

Abstract: The method of regenerating a granular, foraminous nickelaluminum catalyst which has been activated by removing about 2-50 percent of the aluminum from a nickel-aluminum alloy originally containing about 25-60 percent by weight of nickel and about 4075 percent by weight of aluminum and which has lost activity through use as a fixed-bed catalyst in the preparation of butane1,4-diol by the continuous hydrogenation of an aqueous mixture containing about 30-80 percent by weight of water and diol selected from the group consisting of 2-butyne-1,4-diol and 2butene-1,4-diol at a temperature of about 60-150*C., a hydrogen pressure of about 100-400 atmospheres and a superficial gas velocity of at least about 0.5 foot per minute which comprises washing the catalyst with a wash medium consisting essentially of about 90-99 percent by weight of water and about 1-10 percent by weight of a polycarboxylic acid selected from the group consisting of citric and succinic acids. Such catalysts can be reactivated by first washing with the above polycarboxylic acid solution and then treating with a dilute aqueous alkali metal hydroxide solution, thereby removing additional aluminum from the alloy. Catalysts which have become fouled through use of an aqueous feed mixture containing dissolved calcium ions can be regenerated by washing the catalyst with the above polycarboxylic acid solution until the wash liquid no longer becomes saturated with calcium ions.

Abstract translation: 通过从最初含有约25-60重量％镍的镍 - 铝合金中除去大约2-50％的铝而活化的颗粒状多孔镍 - 铝催化剂的方法，以及约40-75％的镍 铝的重量，并且通过连续氢化包含约30-80重量％的水和选自以下的二醇的含水混合物在制备丁烷-1,4-二醇中通过用作固定床催化剂而失去活性 在约60-150℃的温度下由2-丁炔-1,4-二醇和2-丁烯-1,4-二醇组成的组，约100-400个大气压的氢气压力和 至少约0.5英尺/分钟，其包括用洗涤介质洗涤催化剂，洗涤介质基本上由约90-99重量％的水和约1-10重量％的选自柠檬酸和琥珀酸的多元羧酸组成。 这样的催化剂可以通过首先用上述多元羧酸溶液洗涤，然后用稀碱金属氢氧化物水溶液处理，从而从合金中除去附加的铝，可以再活化。 通过使用含有溶解的钙离子的含水原料混合物而被污染的催化剂可以通过用上述多元羧酸溶液洗涤催化剂直至洗涤液体不再被钙离子饱和来再生。

公开(公告)号：US3672841A

公开(公告)日：1972-06-27

申请号：US3672841D

申请日：1970-12-14

Applicant: IONICS

Inventor： FREEMAN DONALD C JR ,  ROGERS LOUIS J

IPC: G01N31/00 ,  G01N33/18 ,  B01J11/02 ,  G01N31/12

CPC classification number: G01N33/1846 ,  G01N31/005 ,  Y10T436/235

Abstract: A METHOD IS PROVIDED FOR REPLENISLING THE CATALYST COMPONENT OF AN ANALYZER ADAPTED TO MEASURE THE TOTAL INORGANIC CARBON CONTENT OF A FLUID SAMPLE, THE NEED FOR WATER ANALYSIS HAS BECOME INCREASINGLY IMPORTANT WITH EXPANDING INTEREST IN THE ABATEMENT OF WATER POLLUTION, AND FOR DETERMINING LEAKS IN VESSELS SUCH AS HEAT EXCHANGERS USED IN INDUSTRY. ONE SET OF PARAMETERS

OF GREAT UTILITY HAS BEEN THE CONCENTRATIONS OF CARBON; ORGANIC, INORGANIC AND TOTAL.

公开(公告)号：US3660306A

公开(公告)日：1972-05-02

申请号：US3660306D

申请日：1970-04-20

Applicant: KNAPSACK AG

Inventor： SENNEWALD KURT ,  OHORODNIK ALEXANDER ,  HUNDECK JOACHIM ,  MITTLER WERNER ,  VIERLING HERMANN ,  OPITZ WOLFGANG

IPC: C07C53/16 ,  B01J23/96 ,  B01J38/42 ,  C07B61/00 ,  C07C51/00 ,  C07C67/00 ,  B01J11/18 ,  B01J11/02

CPC classification number: B01J23/96

Abstract: A CATALYST CONTAINING METALLIC PALLADIUM DEPOSITED ON AN ACIDPROOF CARRIER FOR USE IN THE HYDROGENATION AND DECHLORINATION OF DICHLOROACETIC ACID AND/OR TRICHLOROACETIC ACID TO PRODUCE MONOCHLOROACETIC ACID AND/OR ACETIC IS REGENERATED. TO THIS EFFECT, THE POISONED CATALYST CONTAINING MOISTURE IN FORM OF WATER AND/OR ACETIC ACID AND/OR MONOCHLOROACETIC ACID IS TREATED WITH CHLORINE GAS IN AN ACID MEDIUM, AT TERPERATURES OF BETWEEN 20 AND 200*C., WHEREBY THE METALLIC PALLADIUM IS OXIDIZED TO PALLADIUM CHLORIDE; RESIDUAL CHLORINE IS EXPELLED BY MEANS OF AN ENERT GAS; AND THE OXIDIZED CATALYST IS SUCCESSIVELY TREATED WITH A REDUCING AGENT TO RE-EFFECT REDUCTION OF THE PALLADIUM CHLORIDE TO METALLIC PALLADIUM.

公开(公告)号：US3654181A

公开(公告)日：1972-04-04

申请号：US3654181D

申请日：1970-10-21

Applicant: DOW CHEMICAL CO

Inventor： SUTHERLAND SAMUEL S JR ,  DAILEY GEORGE W

IPC: B01J23/94 ,  C07C5/333 ,  B01J11/02 ,  B01J11/30

CPC classification number: B01J23/94 ,  C07C5/3332 ,  Y02P20/584 ,  Y10S585/906 ,  C07C15/46

Abstract: A METHOD OF ACTIVATION OF THE SELF-REGENERATING IRON OXIDE CATALYSTS EMPLOYED TO DEHYDROGENTATE ETHYLBENZENE TO STYRENE BY OPERATING THE REACTOR CONTAINING SUCH CATALYST SO AS TO PRODUCE ABNORMALLY HIGH CONVERSIONS OF ETHYLBENZENE FOR A PERIOD OF AT LEAST TWO DAYS. THEREAFTER, THE ACTIVITY OF THE CATALYST IS IMPROVED AT THE USUAL LEVELS OF CONVERSION.

公开(公告)号：US3560404A

公开(公告)日：1971-02-02

申请号：US3560404D

申请日：1967-12-20

Applicant: VARTA AG

Inventor： JUNG MARGARETE ,  DOHREN HANS H VON

IPC: B01J25/04 ,  B01J11/02 ,  B01J11/30

CPC classification number: B01J25/04

Abstract: PROCESS FOR THE REACTIVATION OF DEACTIVATED HYDROGENATION CATALYST WHICH AS MAIN CATALYTIC COMPONENTS CONTAIN CATALYTICALLY ACTIVE FORMS OF THE METALLIC ELEMENTS IRON, NICKEL AND COBALT COMPRISING INTRODUCING THE CATALYST TO BE REACTIVATED INTO A NON-AQUEOUS ORGANIC LIQUID AND CONTACTING SUCH CATALYST THEREIN WITH A STRONG REDUCING AGENT, SUCH AS, HYDRAZINE, BOROHYDRIDES OR HYPOPHOSPHITES UNTIL DEVELOPMENT OF GASEOUS HYDROGEN OCCURS.