초록 ▼

Disclosed is a method and system for reducing the formation of metal catalyzed side-reaction byproducts formed in the feed vaporization and introduction system of a methanol to olefin reactor system by forming and/or coating one or more of the heating devices, feed lines or feed introduction nozzles

Disclosed is a method and system for reducing the formation of metal catalyzed side-reaction byproducts formed in the feed vaporization and introduction system of a methanol to olefin reactor system by forming and/or coating one or more of the heating devices, feed lines or feed introduction nozzles of/with a material that is resistant to the formation of metal catalyzed side reaction byproducts. The invention also may include monitoring and/or maintaining the temperature of at least a portion of the feed vaporization and introduction system and/or of the feedstock contained therein below about 400° C., 350° C., 300° C., 250° C., 200° C. or below about 150° C. The temperature can be maintained in the desired range by jacketing at least a portion of the feed vaporization and introduction system, such as at least a portion of the feed introduction nozzle, with a thermally insulating material or by implementing a cooling system.

대표청구항 ▼

Disclosed is a method and system for reducing the formation of metal catalyzed side-reaction byproducts formed in the feed vaporization and introduction system of a methanol to olefin reactor system by forming and/or coating one or more of the heating devices, feed lines or feed introduction nozzles

Disclosed is a method and system for reducing the formation of metal catalyzed side-reaction byproducts formed in the feed vaporization and introduction system of a methanol to olefin reactor system by forming and/or coating one or more of the heating devices, feed lines or feed introduction nozzles of/with a material that is resistant to the formation of metal catalyzed side reaction byproducts. The invention also may include monitoring and/or maintaining the temperature of at least a portion of the feed vaporization and introduction system and/or of the feedstock contained therein below about 400° C., 350° C., 300° C., 250° C., 200° C. or below about 150° C. The temperature can be maintained in the desired range by jacketing at least a portion of the feed vaporization and introduction system, such as at least a portion of the feed introduction nozzle, with a thermally insulating material or by implementing a cooling system. mpound according to claim 1, wherein NHC is an unsubstituted or substituted N-heterocyclic carbene selected from the group consisting of carbenes represented by formula IIIwherein R 4, R5, R6, R7, R8and R9are each independently hydrogen, halogen or a substituent selected from the group consisting of C1-C20alkyl, C2-C20alkenyl, C2-C20alkynyl, aryl, C1-C20carboxylate, C1-C20alkoxy, C2-C20alkenyloxy, C2-C20alkynyloxy, aryloxy, C2-C20alkoxycarbonyl, C1-C20alkylthiol, aryl thiol, C1-C20alkylsulfonyl and C1-C20alkylsulfinyl, wherein further each R4, R5, R6, R7, R8and R9is optionally substituted with one or more moieties selected from the group consisting of C1-C20hydrocarbyl, C1-C20alkoxy, hydroxyl, thiol, thioether, ketone, aldehyde, ester, ether, amine, imine, amide, nitro, carboxylic acid, disulfide, carbonate, isocyanate, carbodiimide, carboalkoxy, carbamate and halogen, wherein R4, R5, R6, R7, R8and R9radicals are optionally linked to each other to form a stable bridging group.3. The compound according to claim 1, wherein L is selected from the group consisting of a hydrocarbon or halogenated hydrocarbon solvent molecule, a dihydrogen (H2) or hydrosilane, a ketone, an aldehyde or an ester substrate, an alkoxysilane, ether or alcohol product molecule, a combination of two anionic ligands selected from the group consisting of hydride (H−), silyl (SiR10R11R12)− and mixtures thereof, wherein R10, R11, R12are independently hydrogen, halogen or a substituent selected from the group consisting of C1-C20alkyl, C2-C20alkenyl, C2-C20alkynyl, aryl, C1-C20carboxylate, C1-C20alkoxy, C2-C20alkenyloxy, C2-C20alkynyloxy, aryloxy, C2-C20alkoxycarbonyl, C1-C20alkylthiol, aryl thiol, C1-C20alkylsulfonyl and C1-C20alkylsulfinyl, wherein further each R10, R11, R12is optionally substituted with one or more moieties selected from the group consisting of C1-C20hydrocarbyl, C1-C20alkoxy, hydroxyl, thiol, thioether, ketone, aldehyde, ester, ether,amine, imine, amide, nitro, carboxylic acid, disulfide, carbonate, isocyanate, carbodiimide, carboalkoxy, carbamate and halogen.4. The compound according to claim 1, wherein said anion (A−) is selected from the group consisting of BF4−, PF6−, SbF6−, CF3SO3−, CB11H12−, CB9H10−CB9H5X5−, CB11H6X6−, wherein X is F Cl, Br or I, HBR3−, wherein R is a hydrocarbyl or substituted hydrocarbyl, and [(M′)Z1Z2. . . Zn]−, M′ is an element selected form atoms of group 13, n is the total number of Z ligands or n is 4, and Z1to Znare independently selected from the group consisting of H radical, C1-20hydrocarbyl radical, substituted hydrocarbyl radical, halogens, halogen-substituted hydrocarbyl radical, hydrocarbyl-, halogen-substituted hydrocarbyl organometalloid radical, —OR, —C(O)R′, —CO2R′, and —NR′R″, wherein R′ and R″ are independently selected from the group consisting of H radicals, C1-20hydrocarbyl radicals, halogens, and halogen-substituted hydrocarbyl radical; said Z1to Znradicals optionally linked to each other to form a stable bridging group.5. The compound according to claim 4, wherein M′ is boron.6. The compound according to claim 4, wherein said Z1to Znare each fluorine substituted phenyl, naphthyl or anthracenyl radical.7. The compound according to claim 1, further comprising a solvent of crystallization thereby forming [CpW(CO)2(NHC)Lk]+[A]−.Y′h, wherein h is a number from 0 to 1 and Y′ is selected from the group consisting of a C1-20hydrocarbon, an aromatic hydrocarbon, a C1-20halocarbon, an ether and mixtures thereof.8. The compound according to claim 7, wherein Y′ is selected from the group consisting of hexane, benzene, toluene, tetrahydrofuran, diethyl ether and mixtures thereof.9. A method of preparing a catalytic composition comprising an organometallic complex represented by formula I: [CpM(CO) 2(NHC)Lk]+A−  Iwherein M is a molybdenum or tungsten, Cp is subst