公开(公告)号：JPH11263747A

公开(公告)日：1999-09-28

申请号：JP37347898

申请日：1998-12-28

Applicant: PRAXAIR TECHNOLOGY INC

Inventor： PAPAVASSILIOU VASILIS ,  WAGNER MATTHEW LINCOLN ,  DAY ROGER WILLIAM

IPC: B01J23/44 ,  B01J23/52 ,  C07B61/00 ,  C07C67/05 ,  C07C67/055 ,  C07C69/15 ,  C07D301/08

Abstract: PROBLEM TO BE SOLVED: To obtain vinyl acetate with maximizing the selectivity of vinyl acetate and minimizing ethylene lost by purge, by using ethylene, acetic acid and argon-containing oxygen as raw materials and passing the raw materials through specific processes. SOLUTION: Ethylene, acetic acid, an argon-containing oxygen flow and a recycling gas flow are combined to form a gas-phase reaction mixture, which is supplied to a reactor charged with a catalyst. A reaction outflow stream is passed through a cleaning unit to give a vinyl acetate-acetic acid mixture flow and an outflow stream rich in ethylene. A part of the outflow stream rich in ethylene is passed through a carbon dioxide removing apparatus and the outflow stream rich in ethylene is combined with a part of the outflow stream not containing carbon dioxide to form a recycling gas. The vinyl acetate- acetic acid mixture outflow stream is passed through a cleaning apparatus and an acetic acid flow and an acetic acid recycling flow are combined. The oxygen concentration of the argon-containing oxygen flow is increased, the argon concentration is reduced by adjusting the flow rate of a purge flow to give vinyl acetate.

公开(公告)号：JP2000084396A

公开(公告)日：2000-03-28

申请号：JP25015999

申请日：1999-09-03

Applicant: PRAXAIR TECHNOLOGY INC

Inventor： ANDERSON JOHN ERLING ,  FRANCIS ARTHUR WELLINGTON JR ,  WAGNER MATTHEW LINCOLN ,  LEGER CHRISTOPHER BRIAN

IPC: B01J3/00 ,  B01J3/02 ,  B01J12/00 ,  B01J19/00 ,  B01J19/26 ,  C01B32/40

Abstract: PROBLEM TO BE SOLVED: To secure a reaction having high selectivity and conversion by providing a source of a 1st gaseous reactant having a specific temp., a mixing chamber, where the reaction does not occur, and a reaction zone, where suffers the gas phase reaction in a reaction device, in the case of forming a uniform gaseous reactant mixture by reacting the 1st gaseous reactant with a 2nd gaseous reactant in the reaction device. SOLUTION: The 1st component in the reaction device is the source of the hot gaseous reactant (reactant A) having a temp. higher than 500 deg.C. The reactant A is injected to a mixing chamber of the reaction device as expansion jet. The expansion jet can be formed by providing an adjuster (such as a flow nozzle) between the hot gas source and the mixing chamber. The 2nd gaseous reactant (reactant B) in one of a gaseous state and a super critical state is injected near a place, where the reactant A is injected. In the mixing chamber, the reactant A and the reactant B does not react with each other substantially, though rapidly mix with each other. Next, the mixture of the reactant A with the reactant B is subjected to gas phase reaction in the reaction zone.

公开(公告)号：JP2001256420A

公开(公告)日：2001-09-21

申请号：JP2001007446

申请日：2001-01-16

Applicant: PRAXAIR TECHNOLOGY INC

Inventor： AKHRAS AMER WAHID ,  WAGNER MATTHEW LINCOLN

IPC: G06F19/00 ,  G01N25/50 ,  G01N33/00 ,  G06G7/48

Abstract: PROBLEM TO BE SOLVED: To provide a method for using a neural network as a model for predicting the inflammation limit of a compound chemical mixture. SOLUTION: In the case of generating a neural network model by exercising data from critical variables of respective structure groups when the inflammation limit of the compound mixture is predicted by using the critical variables of the structure groups, the critical variables include compositional data and thermochemical data from the respective structure groups. This method includes testing the exercised data from the neural network model and verifying the exercised and tested data from the neural network to accurately predict the inflammation limit of a similar compound mixture having the same structure group.

公开(公告)号：JPH11228562A

公开(公告)日：1999-08-24

申请号：JP18704598

申请日：1998-06-18

Applicant: PRAXAIR TECHNOLOGY INC

Inventor： WAGNER MATTHEW LINCOLN

IPC: C07D307/60 ,  B01F3/02 ,  B01F5/02 ,  B01F5/04 ,  B01F13/10 ,  B01J4/00 ,  B01J8/18 ,  B01J8/24 ,  B01J19/00 ,  C07B61/00 ,  C07C51/215

Abstract: PROBLEM TO BE SOLVED: To provide a system enabling the combination of an oxygen-holding gas with a flow for supplying a gaseous reactant into a fluidized bed reactor, and to provide a method using the system. SOLUTION: This system for producing maleic anhydride comprises (a) the first oxygen-holding gas source connected to a reactor, (b) a reactant gas flow, (c) a sparger means 26 for entraining the second oxygen-holding gas into the reactant gas flow, (d) a supply means for connecting the sparger means 16 to the fluidized bed of the reactor to directly bring the reactor gas flow and the entrained second oxygen-holding gas into contact with the fluidized bed, and (e) a control means 40 for controlling the supply of the second oxygen- holding gas into the sparger means 26 to entrain the oxygen in such an extent as maintaining an effective amount of the oxygen into the gaseous reactant flow at a supply injection point. The method for producing the maleic acid anhydride uses the system.

公开(公告)号：WO2008016441A3

公开(公告)日：2008-04-03

申请号：PCT/US2007014814

申请日：2007-06-26

Applicant: PRAXAIR TECHNOLOGY INC ,  WAGNER MATTHEW LINCOLN ,  HEIDERMAN DOUGLAS CHARLES

Inventor： WAGNER MATTHEW LINCOLN ,  HEIDERMAN DOUGLAS CHARLES

IPC: F17C13/04

CPC classification number: F17C13/04 ,  F16K1/305 ,  F17C2201/0109 ,  F17C2201/0114 ,  F17C2201/032 ,  F17C2201/058 ,  F17C2205/018 ,  F17C2205/0335 ,  F17C2205/0338 ,  F17C2205/0341 ,  F17C2205/035 ,  F17C2205/0385 ,  F17C2205/0391 ,  F17C2223/0123 ,  F17C2223/0153 ,  F17C2223/033 ,  F17C2223/035 ,  F17C2223/036 ,  F17C2223/043 ,  F17C2223/047 ,  F17C2250/0636 ,  F17C2260/036 ,  F17C2270/0518 ,  Y10T137/86332

Abstract: An apparatus (100) for controlling the discharge of pressurized fluids from the outlet of a high pressure cylinder (110) containing toxic hydridic or flammable compounds is provided. The apparatus (100) contains a cylinder (110) for holding a pressurized fluid in an at least partial gas phase; a cylinder port body (114) threaded to the upper part of the cylinder (110) in a sealed position; a dual port head valve assembly (116) disposed within the cylinder port body (114), wherein a first port (130) is utilized to fill the cylinder with a pressurized fluid, and a second port in fluid communication with an outlet of the cylinder (122) to discharge the pressurized fluid; a gas flow discharge path (12 0) defined in part by the second port body and the outlet, and further including a restricted flow path (130) and a flow channel disposed upstream of the second port body, but wherein the gas flow discharge path does not include a restrictive element selected from the group of pressure regulators, check valves and restrictive flow orifices; and the restricted flow path (13 0) limits the flow rate of the gas discharged from the cylinder to 5,000 seem when the outlet of the cylinder (110) is exposed to an atmospheric condition.

Abstract translation: 提供了一种用于控制从含有有毒的氢化物或易燃化合物的高压气瓶（110）的出口排出加压流体的装置（100）。 装置（100）包括用于将加压流体保持在至少部分气相中的气缸（110） 气缸端口主体（114），其在密封位置被螺纹连接到所述气缸（110）的上部; 设置在气缸端口主体（114）内的双端口头部阀组件（116），其中利用第一端口（130）将压力流体填充到气缸中，以及与气缸的出口流体连通的第二端口 （122）以排出加压流体; 一部分由第二端口主体和出口限定的气流排放路径（12 0），并且还包括限制流路（130）和设置在第二端口主体上游的流动通道，但是其中气流排放路径 不包括从压力调节器，止回阀和限制流量孔组中选择的限制元件; 并且当气缸（110）的出口暴露于大气条件时，限制流动路径（13 0）将从气缸排出的气体的流量限制为5,000sccm。

公开(公告)号：DE69936692T2

公开(公告)日：2008-04-30

申请号：DE69936692

申请日：1999-09-03

Applicant: PRAXAIR TECHNOLOGY INC

Inventor： ANDERSON JOHN ERLING ,  FRANCIS ARTHUR WELLINGTON JR ,  WAGNER MATTHEW LINCOLN ,  LEGER CHRISTOPHER BRIAN

IPC: B01J3/00 ,  B01F23/10 ,  B01J3/02 ,  B01J8/00 ,  B01J12/00 ,  B01J19/00 ,  B01J19/24 ,  B01J19/26 ,  C01B32/40

Abstract: The invention comprises a reactor having a source of a first hot reactant gas, a mixing chamber in which said first hot reactant gas mixes with a second reactant gas to form a reactant gas mixture, but wherein substantially no reaction takes place and a reaction zone wherein said mixture undergoes vapor phase reaction. A process for using the reactor is also disclosed.

公开(公告)号：DE69723769T2

公开(公告)日：2004-05-27

申请号：DE69723769

申请日：1997-05-22

Applicant: PRAXAIR TECHNOLOGY INC

Inventor： WAGNER MATTHEW LINCOLN

IPC: C01B21/26

Abstract: Oxygen which is in addition to oxygen from air is injected into a nitric acid production process such that the total amount of additional oxygen injected is distributed between the bleacher and the cooler/condenser train. This process results in reduced oxygen requirements for increasing production, increasing acid strength and decreasing NOx emissions.

公开(公告)号：DE69614076D1

公开(公告)日：2001-08-30

申请号：DE69614076

申请日：1996-12-26

Applicant: PRAXAIR TECHNOLOGY INC

Inventor： WAGNER MATTHEW LINCOLN ,  KIRKWOOD DONALD WALTER WELSH ,  KIYONAGA KAZUO

IPC: C07B33/00 ,  C07C57/04 ,  C07C57/145 ,  C07C63/16

Abstract: This invention is directed towards an improved process for the selective gas phase oxidation of a organic reactant using a metal oxide redox catalyst, wherein the organic reactant and air feeds are at a substantially continuous level, the improvement comprising adding a fluctuating flow of oxygen at alternating relatively high and relatively low levels. The invention also teaches means by which a gas may be provided to a reaction process on a fluctuating basis.

公开(公告)号：CA2293010A1

公开(公告)日：2000-06-24

申请号：CA2293010

申请日：1999-12-22

Applicant: PRAXAIR TECHNOLOGY INC

Inventor： VELLOSO ANTONIO AUGUSTO M ,  WAGNER MATTHEW LINCOLN ,  ECHEGARAY DIEGO FERNANDEZ

IPC: C07D201/06 ,  C07D201/10 ,  C07D223/10

Abstract: A method for production of caprolactam. The method involves: (a) reacting air with ammonia gas in an ammonia conversion zone to produce nitric oxide; (b) oxidizing at least a portion of the nitric oxide to nitrogen dioxide to produce an NO x-rich process gas stream; (c) reactively absorbing the NO x-rich gas stream with phosphoric acid containing solution in an absorption zone to form nitrate ions; (d) contacting the nitrate ions with air in a degassing zone to produce a nitrate-rich aqueous process stream; (e) reducing the nitrate-rich aqueous stream with hydrogen in the presence of phosphoric acid to produce hydroxylammonium phosphate; (f) oximating the hydroxylammonium phosphate with cyclohexanone to produce cyclohexanone oxime; and (g) converting the cyclohexanone oxime to caprolactam. According to the invention, supplemental oxygen is added downstream of the ammonia conversion zone to increase the quantity and rate of formation of nitrogen dioxide in the NO x-rich process gas stream.

公开(公告)号：BR9802028A

公开(公告)日：2000-04-04

申请号：BR9802028

申请日：1998-06-18

Applicant: PRAXAIR TECHNOLOGY INC

Inventor： WAGNER MATTHEW LINCOLN

IPC: C07D307/60 ,  B01F23/10 ,  B01J4/00 ,  B01J8/18 ,  B01J8/24 ,  B01J19/00 ,  C07B61/00 ,  C07C51/215 ,  C07C57/145 ,  C07C69/60 ,  C08F22/06 ,  B01F5/04

Abstract: A system provides an oxygen-bearing gas and gaseous reactant stream to a fluidized bed reactor using a sparger to entrain the oxygen-bearing gas into the reactant gas stream. A feed line couples the sparger to the reactor's fluidized bed and introduces the reactant gas stream and entrained oxygen-bearing gas directly into contact with the fluidized bed. A controller controls and maintains both the amount of oxygen-bearing gas and the gaseous reactant above an upper flammability limit, preferably with a safety margin of at least 10%.