公开(公告)号：US3699683A

公开(公告)日：1972-10-24

申请号：US3699683D

申请日：1971-04-05

Applicant: CHEMICAL CONSTRUCTION CORP

Inventor： TOURTELLOTTE JOHN F ,  NEGRA JOHN S ,  WARSHAW ABE ,  VILLIERS-FISHER JOHN F

IPC: B01D53/94 ,  F01N3/08 ,  F01N3/20 ,  F01N3/30 ,  F01N3/32 ,  F01N13/02 ,  F02M25/07 ,  F01N3/14 ,  F01N3/16 ,  F02B75/10

CPC classification number: F01N3/32 ,  B01D53/944 ,  B01D53/9495 ,  F01N3/0835 ,  F01N3/0878 ,  F01N3/20 ,  F01N3/30 ,  F01N13/009 ,  F01N2240/18 ,  F01N2250/12 ,  F01N2330/08 ,  F01N2370/00 ,  F01N2390/02 ,  F01N2390/06 ,  F01N2410/00 ,  F01N2410/12 ,  F02M26/15 ,  Y02T10/20 ,  Y10S55/30

Abstract: A system for the prevention of hydrocarbon emissions from engines during start up is provided, in which a cold engine generates an exhaust gas rich in unburned or thermally degraded hydrocarbons. The exhaust gas is passed through a hydrocarbon absorbent bed prior to atmospheric discharge, so that hydrocarbon vapor is absorbed in the bed. When the engine and exhaust gas are hot, and hydrocarbon emission low, most of the exhaust gas is discharged directly to atmosphere and the absorbent bed is regenerated by passing a small stream of hot exhaust gas through the bed. The resulting gaseous mixture of exhaust gas plug desorbed hydrocarbon vapor is recycled to the engine.

Abstract translation: 提供了一种用于在启动期间防止来自发动机的碳氢化合物排放的系统，其中冷发动机产生富含未燃或热降解的烃的废气。 废气在大气排放之前通过烃类吸收剂床，使得烃蒸气被吸收在床中。 当发动机和废气热时，碳氢化合物排放较低，大部分排气直接排放到大气中，吸收床通过使小量热废气通过床再生。 所产生的排气塞解吸的烃蒸气的气体混合物被再循环到发动机。

公开(公告)号：US3894140A

公开(公告)日：1975-07-08

申请号：US35870773

申请日：1973-05-09

Applicant: CHEMICAL CONSTRUCTION CORP

Inventor： WARSHAW ABE

IPC: B01D53/94 ,  B01J23/34 ,  B01J23/76 ,  B01D53/34

CPC classification number: B01D53/945 ,  B01J23/34 ,  B01J23/76 ,  Y02A50/2324 ,  Y02T10/22

Abstract: Engine exhaust gas is treated to remove noxious components by contacting the exhaust gas with an active catalytic agent deposited on alumina which has been stabilized by the inclusion of at least two metallic additives selected from the group consisting of thorium, a rare earth metal, and an alkaline earth metal.

Abstract translation: 通过使废气与沉积在氧化铝上的活性催化剂接触来处理发动机废气以除去有害成分，所述活性催化剂已经通过包含至少两种选自钍，稀土金属和 碱土金属。

公开(公告)号：US3466159A

公开(公告)日：1969-09-09

申请号：US3466159D

申请日：1965-03-26

Applicant: CHEMICAL CONSTRUCTION CORP

Inventor： WARSHAW ABE ,  NEGRA JOHN S ,  BERNAS ARNOLD R

IPC: B01J21/00 ,  B01J23/889 ,  B01J27/186 ,  B01J27/187 ,  B01J37/02 ,  C01B3/40 ,  C10L3/00

CPC classification number: B01J21/00 ,  B01J23/8892 ,  B01J27/186 ,  B01J27/187 ,  B01J37/0201 ,  C01B3/40 ,  C01B2203/1052 ,  C10G11/02 ,  Y02P20/52

公开(公告)号：US3565575A

公开(公告)日：1971-02-23

申请号：US3565575D

申请日：1968-05-22

Applicant: CHEMICAL CONSTRUCTION CORP

Inventor： WARSHAW ABE

IPC: B01D53/56 ,  B01D53/00

CPC classification number: B01D53/56

Abstract: A GAS STREAM CONTAINING NITROGEN OXIDES, SUCH AS THE TAIL GAS FROM A NITRIC ACID PLANT, IS SRUBBED WITH AN AQUEOUS UREA SOLUTION. THE NITROGEN OXIDES DISSOLVE IN THE SOLUTION TO FORM NITROUS ACID, WHICH REACTS WITH THE UREA TO FORM NITROGEN, CARBON DIOXIDE AND WATER. THE RESULTING SCRUBBED GAS STREAM IS OF REDUCED NITROGEN OXIDES CONTENT AND, IN THE CASE OF NITRIC ACID PLANT TAIL GAS, MAY BE SAFETLY DISCHARGED TO THE ATMOSPHERE WITHOUT CAUSING AIR POLLUTION.

公开(公告)号：US3518073A

公开(公告)日：1970-06-30

申请号：US3518073D

申请日：1967-01-23

Applicant: CHEMICAL CONSTRUCTION CORP

Inventor： STRELZOFF SAMUEL ,  WARSHAW ABE ,  VILLIERS-FISHER JOHN F ,  ATKIN SYDNEY

IPC: C01B25/234 ,  C05B11/06 ,  C05C1/00 ,  C05D7/00

CPC classification number: C05B11/06 ,  C01B25/234 ,  C05C1/00

公开(公告)号：US3740349A

公开(公告)日：1973-06-19

申请号：US19620471

申请日：1971-11-05

Applicant: CHEMICAL CONSTRUCTION CORP

Inventor： NEGRA JOHN SAMUEL ,  WARSHAW ABE

IPC: B01D53/94 ,  B01J23/84 ,  B01J23/889 ,  B01J11/08 ,  B01J11/22

CPC classification number: B01J23/8892 ,  B01D53/9413 ,  B01D53/944 ,  B01D53/9477 ,  B01D2251/102 ,  B01D2255/2073 ,  B01D2255/20746 ,  B01D2255/20753 ,  B01J23/84

Abstract: THE EXHAUST GAS FROM INTERNAL COMBUSTION ENGINES OR THE LIKE IS TREATED TO CONVERT HARMFUL OR POLLUTANT COMPONENTS SUCH AS NITROGEN OXIDES, CARBON MONOXIDE AND UNBURNED HYDROCARBONS TO INNOCUOUS COMPOUNDS, BY CONTACTING THE EXHAUST GAS WITH A CATALYST COMPOSITION CONTAINING NICKEL, COBALT AND MANGANESE IN CATALYTICALLY EFFECTIVE AMOUNTS, DEPOSITED ON A CARRIER SUCH AS ALPHA ALUMINA.

公开(公告)号：US3701822A

公开(公告)日：1972-10-31

申请号：US3701822D

申请日：1970-06-11

Applicant: CHEMICAL CONSTRUCTION CORP

Inventor： NEGRA JOHN SAMUEL ,  WARSHAW ABE

IPC: B01D53/94 ,  B01J23/84 ,  B01J23/889

CPC classification number: B01D53/945 ,  B01D2251/102 ,  B01D2255/2073 ,  B01D2255/20746 ,  B01D2255/20753 ,  B01J23/84 ,  B01J23/8892 ,  Y02A50/2324 ,  Y02T10/22

Abstract: THE EXHAUST GAS FROM INTERNAL COMBUSTIO ENGINES OR THE LIKE IS TREATED TO CONVERT HARMFUL OR POLLUTANT COMPONENTS SUCH AS NITROGEN OXIDES, CARBON MONOXIDE AND UNBRUNED HYDROCARBONS TO INNOCUOUS COMOUNDS, BY CONTACTING THE WXHAUST GAS WITH A CATALYST COMPOSITION CONTAINING NICKEL, COBALT AND MANAGNESE IN CATALYTICALLY EFFECTIVE AMOUNTS, DEPOSITED ON A CARRIER SUCH AS ALPHA ALUMINA.

公开(公告)号：US3632306A

公开(公告)日：1972-01-04

申请号：US3632306D

申请日：1969-02-18

Applicant: CHEMICAL CONSTRUCTION CORP

Inventor： VILLIERS-FISHER JOHN F ,  WARSHAW ABE

IPC: B01D53/50 ,  B01D53/34 ,  C01B17/60

CPC classification number: B01D53/501

Abstract: Waste gases containing sulfur dioxide, which may also contain sulfur trioxide, are scrubbed with an aqueous slurry containing solid reactant particles of an oxide or carbonate of calcium, magnesium or barium, together with an additive containing an acidic radical which solubilizes the calcium, magnesium or barium ion, so that the aqueous slurry absorbs sulfur dioxide from the waste gas. The dissolved sulfur dioxide forms the soluble sulfite radical in solution, which reacts with the dissolved calcium, magnesium or barium ion to precipitate a solid sulfite and regenerate the additive in solution. The solid sulfite or calcium, magnesium or barium is separated from the aqueous liquid phase which is recycled for further scrubbing, together with makeup solid reactant particles. The scrubbed waste gas is discharged to atmosphere.

Abstract translation: 含有二氧化硫的废气也可以含有三氧化硫，用含有钙，镁或钡的氧化物或碳酸盐的固体反应物颗粒的含水浆料以及含有酸性基团的添加剂进行洗涤，所述酸性基团溶解钙，镁或 钡离子，使得水性浆料从废气中吸收二氧化硫。 溶解的二氧化硫在溶液中形成可溶性亚硫酸根，其与溶解的钙，镁或钡离子反应以沉淀出固体亚硫酸盐并在溶液中再生添加剂。 将固体亚硫酸盐或钙，镁或钡与水性液相分离，再循环用于进一步洗涤，以及补充固体反应物颗粒。 洗涤废气排放到大气中。