HEATER AND METHOD OF OPERATION
    113.
    发明专利

    公开(公告)号:MY152906A

    公开(公告)日:2014-11-28

    申请号:MYPI20081649

    申请日:2008-05-16

    Abstract: A FURNACE, FIRING PATTERN AND METHOD OF OPERATING A HEATER (10) THAT EMPLOYS A COMBINATION OF HEARTH BURNERS (46) AND WALL BURNERS (56) FOR THE CRACKING OF HYDROCARBONS IS DESCRIBED. THE FIRING PATTERN LEADS TO IMPROVEMENTS IN THE UNIFORMITY OF THE COIL METAL TEMPERATURES AND VERTICAL HEAT FLUX PROFILES OVER THE FIREBOX ELEVATION. THE HEARTH BURNERS OPERATE WITH A STOICHIOMETRIC EXCESS OF AIR WHILE THE WALL BURNERS OPERATE WITH LESS THAN THE STOICHIOMETRIC AMOUNT OF AIR.

    OLEFIN ISOMERIZATION AND METATHESIS CATALYST

    公开(公告)号:MY152067A

    公开(公告)日:2014-08-15

    申请号:MYPI20110867

    申请日:2009-09-04

    Abstract: A PROCESS FOR THE PRODUCTION OF PROPYLENE, THE PROCESS INCLUDING: CONTACTING ETHYLENE AND A HYDROCARBON STREAM COMPRISING 1-BUTENE AND 2-BUTENE WITH A BIFUNCTIONAL ISOMERIZATION-METATHESIS CATALYST TO CONCURRENTLY ISOMERIZES 1-BUTENE TO 2-BUTENE AND TO FORM A METATHESIS PRODUCT COMPRISING PROPYLENE; WHEREIN THE BIFUNCTIONAL ISOMERIZATION METATHESIS CATALYST COMPRISES: A CATALYST COMPOUND MAY INCLUDE AT LEAST ONE ELEMENT SELECTED FROM TUNGSTEN, TANTALUM, NIOBIUM, MOLYBDENUM, NICKEL, PALLADIUM, OSMIUM, IRIDIUM, RHODIUM, VANADIUM, RUTHENIUM, AND RHENIUM FOR PROVIDING METATHESIS ACTIVITY ON A SUPPORT COMPRISING AT LEAST ONE ELEMENT FROM GROUP IA, IIA, IIB, AND IIIA OF THE PERIODIC TABLE OF THE ELEMENTS; WHEREIN AN EXPOSED SURFACE AREA OF THE SUPPORT PROVIDES BOTH ISOMERIZATION ACTIVITY FOR THE ISOMERIZATION OF 1-BUTENE TO 2-BUTENE; AND REACTIVE SITES FOR THE ADSORPTION OF CATALYST COMPOUND POISONS. IN OTHER EMBODIMENTS, THE CATALYST COMPOUND MAY INCLUDE AT LEAST ONE ELEMENT SELECTED FROM ALUMINUM, GALLIUM, IRIDIUM, IRON, MOLYBDENUM, NICKEL, NIOBIUM, OSMIUM, PALLADIUM, PHOSPHORUS, RHENIUM, RHODIUM, RUTHENIUM, TANTALUM, TITANIUM, TUNGSTEN, AND VANADIUM. (FIGURE 1)

    OLEFIN ISOMERIZATION AND METATHESIS CATALYST

    公开(公告)号:CA2733601C

    公开(公告)日:2014-08-05

    申请号:CA2733601

    申请日:2009-09-04

    Abstract: A process for the production of propylene, the process including: contacting ethylene and a hydrocarbon stream comprising 1-butene and 2-butene with a bifunctional isomerization-metathesis catalyst to concurrently isomerizes 1-butene to 2-butene and to form a metathesis product comprising propylene; wherein the bifunctional isomerization- metathesis catalyst comprises: a catalyst compound may include at least one element selected from tungsten, tantalum, niobium, molybdenum, nickel, palladium, osmium, iridium, rhodium, vanadium, ruthenium, and rhenium for providing metathesis activity on a support comprising at least one element from Group IA, HA, HB, and IIIA of the Periodic Table of the Elements; wherein an exposed surface area of the support provides both isomerization activity for the isomerization of 1-butene to 2-butene; and reactive sites for the adsorption of catalyst compound poisons. In other embodiments, the catalyst compound may include at least one element selected from aluminum, gallium, iridium, iron, molybdenum, nickel, niobium, osmium, palladium, phosphorus, rhenium, rhodium, ruthenium, tantalum, titanium, tungsten, and vanadium.

    Proceso de isomerización de olefinas

    公开(公告)号:ES2475203T3

    公开(公告)日:2014-07-10

    申请号:ES02741719

    申请日:2002-05-22

    Abstract: Un proceso de isomerización de doble enlace de olefinas para la conversión de compuestos olefínicos internos a compuestos olefínicos terminales, que comprende poner en contacto una corriente de alimentación de fluido que contiene una olefina con un catalizador de óxido de magnesio activado bajo condiciones de isomerización de olefinas, el catalizador activado que tiene una actividad inicial para isomerización de olefinas y que contiene una cantidad de impureza que afecta la actividad que es, o contiene, azufre, fósforo, al menos un metal de transición o una combinación de los mismos y que no excede la cantidad que resultará en una reducción de la actividad del catalizador de la actividad del catalizador inicial por 0.075 por ciento de pérdida de conversión por hora, medida por la isomerización de 1-buteno a 2-buteno bajo las condiciones de isomerización de olefinas que incluyen una temperatura de al menos 250ºC.

    METHOD, SYSTEM AND APPARATUS FOR FIRING CONTROL

    公开(公告)号:CA2694290C

    公开(公告)日:2014-05-06

    申请号:CA2694290

    申请日:2008-07-24

    Abstract: Disclosed herein is a method of controlling the air to fuel ratio in a burner containing a venturi assembly. The venturi includes an air inlet, a primary fuel inlet with a converging section, a throat portion downstream from the converging section, a diverging section downstream from the throat portion, an outlet, and a secondary gas inlet disposed downstream from the converging section and upstream from the outlet. The method comprises introducing fuel into the fuel inlet, receiving air through the air inlet by inspiration, and feeding a gas through the secondary gas inlet, the flow rate and content of the gas fed through the secondary gas inlet being selected to result in a desired air to fuel ratio through the outlet. A method of firing a heater, a burner, a furnace and firing control systems also are disclosed.

    PROPYLENE VIA METATHESIS WITH LOW OR NO ETHYLENE

    公开(公告)号:CA2885002A1

    公开(公告)日:2014-03-20

    申请号:CA2885002

    申请日:2013-09-11

    Abstract: A process for producing propylene is disclosed, including: fractionating a mixed C4 hydrocarbon stream to recover a first fraction comprising isobutene and a second fraction comprising 2-butene; contacting the first fraction with a first metathesis catalyst in a first metathesis reaction zone; recovering an effluent from the first metathesis reaction zone comprising at least one of ethylene, propylene, unreacted isobutene, C5 olefins, and C6 olefins; contacting the second fraction and the ethylene in the effluent with a second metathesis catalyst in a second metathesis reaction zone; recovering an effluent from the second reaction zone comprising at least one of unreacted ethylene, propylene, unreacted 2-butene, fractionating the effluent from the first metathesis reaction zone and the effluent from the second metathesis reaction zone to recover an ethylene fraction, a propylene fraction, one or more C4 fractions, and a fraction comprising at least one of C5 and C6 olefins.

    PROCESS AND SYSTEM FOR THE PRODUCTION OF ISOPRENE

    公开(公告)号:SG178253A1

    公开(公告)日:2012-03-29

    申请号:SG2012007837

    申请日:2010-07-29

    Abstract: Disclosed herein is a process for producing isoprene that includes reacting a mixed C4 metathesis feed stream comprising isobutylene and at least one of 1-butene and 2-pentene in a first metathesis reactor in the presence of a first metathesis catalyst under conditions sufficient to produce an intermediate product stream comprising at least 30 wt. % 2-methyl-2-pentene based upon the olefin content of fresh feed in the mixed C4 feed stream, and at least one of ethylene and propylene, separating the 2-methyl-2-pentene, subjecting the separated 2-methyl-2-pentene to pyrolysis to produce a reaction product stream comprising isoprene, and separating the isoprene into an isoprene product stream using fractionation. A system used in producing isoprene is also disclosed.

    OLEFIN ISOMERIZATION AND METATHESIS CATALYST

    公开(公告)号:ZA201102479B

    公开(公告)日:2011-12-28

    申请号:ZA201102479

    申请日:2011-04-04

    Abstract: A process for the production of propylene, the process including: contacting ethylene and a hydrocarbon stream comprising 1-butene and 2-butene with a bifunctional isomerization-metathesis catalyst to concurrently isomerizes 1-butene to 2-butene and to form a metathesis product comprising propylene; wherein the bifunctional isomerization-metathesis catalyst comprises: a catalyst compound may include at least one element selected from tungsten, tantalum, niobium, molybdenum, nickel, palladium, osmium, iridium, rhodium, vanadium, ruthenium, and rhenium for providing metathesis activity on a support comprising at least one element from Group IA, IIA, IIB, and IIIA of the Periodic Table of the Elements; wherein an exposed surface area of the support provides both isomerization activity for the isomerization of 1-butene to 2-butene; and reactive sites for the adsorption of catalyst compound poisons. In other embodiments, the catalyst compound may include at least one element selected from aluminum, gallium, iridium, iron, molybdenum, nickel, niobium, osmium, palladium, phosphorus, rhenium, rhodium, ruthenium, tantalum, titanium, tungsten, and vanadium.

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