P-XYLENE PRODUCTION PROCESS (VERSIONS) Russian patent published in 1998 - IPC

Abstract RU 2114811 C1

FIELD: industrial organic synthesis. SUBSTANCE: p-xylene is produced from raw material with boiling point up to 200 C. This material is brought in contact with LSM-5-type zeolite catalyst and process is carried out in gas phase at elevated temperature and pressure. Conversion of hydrocarbon and/or oxygen-containing organic material is effected in a hydrogen-containing gas medium or synthesis gas at 300 to 400 C, pressure 9 to 80 atm, and raw material weight flow rate 1 to 10 h-1 in flow-circulation system, in which gas stream is cooled coming out of reactor. Condensed reaction products are separated and a part of gas stream is recycled. In one embodiment of invention, as raw material, C2-C7-olefins are used and process is carried out in presence of synthesis gas at olefin to CO molar ratio 1 to 3. Used are also: C1-C8-alcohols or aldehydes and/or ketones, or their mixtures in any proportions. In another embodiment of invention, p-xylene is produced from organic material with boiling point up to 200 C on LSM-5-type zeolite catalyst containing metal oxide component. The latter may contain at least three metal oxides and has general formula aCuO bZnO CAl2O3 dCr2O3 eW2O5 where a-e are weight portions and, in particular, a=0-56, b=24-67, c=0-6, d= 0-32, e=0-1 on condition that a and d cannot be zero simultaneously. Zeolite to metal oxide component weight ratio varies from 2:8 to 3:7. When toluene is used as raw material, process is carried out in presence of synthesis gas at toluene to CO molar ratio (2-4):1. EFFECT: increased yield of p-xylene and extended resource of raw materials. 7 cl, 5 tbl

Similar patents RU2114811C1

Title Year Author Number
METHOD FOR PRODUCING GASOLINE FRACTIONS 1997
  • Mysov V.M.
  • Ione K.G.
RU2131905C1
METHOD OF SYNTHESIS-GAS ALKYLATION OF AROMATIC HYDROCARBONS 1997
  • Mysov V.M.
  • Ione K.G.
RU2119470C1
METHOD OF PRODUCING P-XYLENE AND SYNTHESIS GAS (VERSIONS) 1996
  • Mysov V.M.
  • Ione K.G.
RU2115644C1
METHOD OF PREPARING HYDROCARBON GASOLENE FRACTIONS 1994
  • Mysov V.M.
  • Ione K.G.
RU2089533C1
ORGANIC CARBONATE PRODUCTION CATALYST AND METHOD OF PRODUCING ORGANIC CARBONATES 1997
  • Klimov O.V.
  • Kikhtjanin O.V.
  • Ione K.G.
RU2115471C1
METHOD OF REFINING ETHYLENE-CONTAINING GAS FROM C-OLEFINS AND ABOVE 1997
  • Tolstikov G.A.
  • Stepanov V.G.
  • Ione K.G.
  • Snytnikova G.P.
RU2119473C1
METHOD OF PREPARING TRIETHYLENE DIAMINE 1996
  • Testova N.V.
  • Sukhova O.B.
  • Ione K.G.
RU2114849C1
METHOD OF GASOLINE FRACTION AND AROMATIC HYDROCARBONS PRODUCING 1995
  • Echevskij G.V.
  • Stepanov V.G.
  • Ione K.G.
RU2103322C1
METHOD OF PREPARING BALL ZEOLITE-CONTAINING CATALYST 1996
  • Echevskij G.V.
  • Ione K.G.
RU2098179C1
METHOD OF PRODUCING HIGH-OCTANE GASOLINE FRACTIONS AND AROMATIC HYDROCARBONS 1998
  • Stepanov V.G.
  • Ione K.G.
RU2137809C1

RU 2 114 811 C1

Authors

Mysov V.M.

Ione K.G.

Dates

1998-07-10Published

1996-12-16Filed