Theodore J Jenczewski

US Patent:

45526354, Nov 12, 1985

Filed:

Aug 9, 1984

Appl. No.:

6/639528

Inventors:

Theodore J. Jenczewski - Sherrill NY
William H. Skinner - Budd Lake NJ

Assignee:

Allied Corporation - Morris Township, Morris County NJ

International Classification:

B01D 1302

US Classification:

2041824

Abstract:

Methods for removal of sulfur oxides, e. g. , SO. sub. 2 and SO. sub. 3, from sulfuric acid tail gases by alkaline solution scrubbing, acidification of the alkaline scrubbing solution containing absorbed sulfur valves, liberation of concentrated SO. sub. 2 from the acidified solution and regeneration of the alkaline scrubbing solution by means of two- or three-compartment electrodialytic water splitters are disclosed. A completely closed loop method suitable for continuous removal of sulfur oxides from sulfuric acid tail gas, recovery of concentrated SO. sub. 2 for use in sulfuric acid plants, regeneration of alkaline scrubbing process solution and improvement in the water balance in sulfuric acid plant by use of two- and three-compartment electrodialytic water splitters is also disclosed.

US Patent:

47568992, Jul 12, 1988

Filed:

Feb 12, 1987

Appl. No.:

7/014422

Inventors:

Theodore J. Jenczewski - Sherrill NY
Robert L. Sturtevant - Hamburg NY
Thomas R. Morgan - Jordan NY
Barry J. Boghean - St. Clair Beach, CA
Donald C. Butt - Brampton, CA

Assignee:

Allied-Signal Inc. - Morris Township, Morris County NJ

International Classification:

C01B 719

US Classification:

423483

Abstract:

A process for manufacturing high purity anhydrous hydrogen fluoride (HF) having low levels of arsenic impurity by contacting anhydrous hydrogen fluoride product, or an intermediate product obtained during the manufacture of HF, with hydrogen peroxide in the presence of a catalyst which comprises effective amounts of molybdenum or an inorganic molybdenum compound and a phosphate compound. The volatile trivalent arsenic impurity in the anhydrous hydrogen fluoride is oxidized to a non-volatile pentavalent arsenic compound and the resultant mixture is distilled to recover high purity anhydrous hydrogen fluoride with reduced levels of arsenic impurity. In one embodiment, an oxidizing agent such as nitric acid or a nitrate salt is added to the reaction mixture to oxidize organic contaminants.

US Patent:

52719189, Dec 21, 1993

Filed:

Mar 11, 1991

Appl. No.:

7/666957

Inventors:

Audie J. Patterson - Atlanta GA
Robert A. Smith - Kinnelon NJ
Theodore J. Jenczewski - Sherrill NY

Assignee:

AlliedSignal Inc. - Morristown NJ

International Classification:

C01B 719

US Classification:

423485

Abstract:

A method is provided wherein the equilibrium HF concentration in the mixture of HF, sulfuric acid and water fed to an HF reaction furnace is greatly reduced by injecting a controlled amount of steam into an HF-removal process wherein the sulfuric acid mixture is also contacted with the hot HF gas leaving the HF reaction furnace. Reducing the HF concentration in this manner significantly improves furnace performance. The purpose of injecting steam is to adjust the water content of the mixture to the optimum value (about 12. 5 weight percent) for HF removal, as well as to supply the heat required for HF removal without the need for an indirect heat exchanger. An additional advantage to this method is that since direct steam injection adds water to the process, in order to keep the furnace feed acid water concentration at the desirable level of less than 1%, oleum or SO. sub. 3 must be added to react with the excess water. Since the reaction of water and SO. sub.

US Patent:

61879177, Feb 13, 2001

Filed:

Oct 29, 1999

Appl. No.:

9/429269

Inventors:

Richard Eugene Mayer - Richmond VA
Lamberto Crescentini - Chester VA
Theodore John Jenczewski - Midlothian VA

Assignee:

AlliedSignal Inc. - Morristownship NJ

International Classification:

C07D20116

US Classification:

540540

Abstract:

The present invention provides a process for the preparation of purified caprolactam comprising the steps of: (a) depolymerizing polyamide-containing carpet in the presence of steam to obtain crude caprolactam and steam; (b) condensing or distilling said crude caprolactam and steam to form aqueous crude caprolactam comprising at least ten percent by weight water; (c) removing substantially all floating oil from the aqueous crude caprolactam so as to form a substantially floating oil-free aqueous crude caprolactam; (d) removing substantially all of said water from said substantially floating oil-free aqueous crude caprolactam; (e) distilling the resulting concentrated crude caprolactam at a pressure of less than about 8 mmHg and a temperature from about 110. degree. C. to about 145. degree. C. so as to form overheads and bottoms of the caprolactam; and (f) crystallizing the caprolactam overheads to obtain caprolactam crystals and mother liquor.

US Patent:

54141540, May 9, 1995

Filed:

Jun 6, 1994

Appl. No.:

8/254729

Inventors:

Theodore J. Jenczewski - Midlothian VA
Lamberto Crescentini - Chester VA
James A. Kweeder - Chester VA

Assignee:

AlliedSignal Inc. - Morris Township, Morris County NJ

International Classification:

C07C 3768
C07C 3770

US Classification:

568754

Abstract:

A process for the reduction of methylbenzofuran (MBF) impurities in phenol obtained from the decomposition product of cumene hydroperoxide requires treating the phenol to reduce the level of acetol, contacting the phenol containing a low level of acetol with an acid resin at sufficient temperature and residence time to reduce the level of MBF by conversion to higher boiling compounds, then distilling the phenol to separate phenol from higher boiling compounds. The phenol may be treated in known ways, such as by treatment with an amine, to reduce the level of acetol. The phenol containing a low level of acetol is contacted with a strong acid resin to reduce the level MBF.

US Patent:

59903066, Nov 23, 1999

Filed:

Sep 3, 1997

Appl. No.:

8/922853

Inventors:

Richard Eugene Mayer - Richmond VA
Lamberto Crescentini - Chester VA
Theodore John Jenczewski - Midlothian VA

Assignee:

AlliedSignal Inc. - Morristown NJ

International Classification:

C07D20112

US Classification:

540540

Abstract:

The present invention provides a process for the preparation of purified caprolactam comprising the steps of: (a) depolymerizing polyamide-containing carpet in the presence of steam to obtain crude caprolactam and steam; (b) removing substantially all of said water from said crude caprolactam and steam (c) distilling the resulting concentrated crude caprolactam at a pressure of less than about 8 mmHg and a temperature from about 110. degree. C. to about 145. degree. C. so as to form overheads and bottoms of the caprolactam; and (d) crystallizing the caprolactam overheads to obtain caprolactam crystals and mother liquor. The resulting purified caprolactam may then be used to make polycaprolactam which may then be used in engineered materials or spun into fiber.

US Patent:

56567570, Aug 12, 1997

Filed:

Aug 10, 1995

Appl. No.:

8/511334

Inventors:

Theodore John Jenczewski - Midlothian VA
Lamberto Crescentini - Chester VA
Richard Eugene Mayer - Richmond VA

Assignee:

AlliedSignal Inc. - Morristown NJ

International Classification:

C07D20112

US Classification:

540540

Abstract:

A process for recovering monomer from multi-component waste material that includes a hydrolyzable polymer, includes contacting the multi-component waste material with water and subjecting the resulting mixture to heat and pressure to form a liquid aqueous portion and a water insoluble portion. The liquid aqueous portion mainly includes depolymerization products of the hydrolyzable polymer, and the water insoluble portion mainly includes components other than the depolymerization products. This mixture is cooled and the liquid aqueous portion and the water insoluble portion are separated. Monomer that formed the hydrolyzable polymer is recovered from the liquid aqueous solution.

US Patent:

42193966, Aug 26, 1980

Filed:

Aug 3, 1979

Appl. No.:

6/063229

Inventors:

Alan B. Gancy - Syracuse NY
Theodore J. Jenczewski - Sherrill NY

Assignee:

Allied Chemical Corporation - Morris Township, Morris County NJ

International Classification:

B01D 1302

US Classification:

204180P

Abstract:

An improved process for the electrodialysis of aqueous NaCl which operates at high current efficiency and low unit cell voltage drop to produce high strength, high purity Na. sub. 2 CO. sub. 3 and either high purity HCl or CaCl. sub. 2 by utilizing cation permselective, anion permselective and bipolar membranes wherein the solutions on both sides of the anion permselective membrane are acidic.