Catalyst for preparing gasoline by coupling methanol with naphtha and preparation method thereof

A technology for the preparation of methanol and naphtha, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, and the preparation of liquid hydrocarbon mixtures. Effect of toluene content

Active Publication Date: 2021-03-12
SINOPEC ENG GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the current technology of naphtha aromatization to produce high-octane gasoline has the problem of high benzene content, and with the increasingly stringent environmental protection regulations, the problem of excessive sulfur content in naphtha aromatization gasoline has become prominent; while methanol to gasoline The gasoline produced by the technology has a lot of heavy components, especially the high content of durene in gasoline. The gasoline produced by the two technologies needs to be blended or post-treated before leaving the factory. Therefore, a catalyst is developed to couple the reactions of naphtha and methanol , and at the same time solve the problem of high benzene, sulfur content and durene content in naphtha aromatization process, it is very necessary

Method used

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  • Catalyst for preparing gasoline by coupling methanol with naphtha and preparation method thereof
  • Catalyst for preparing gasoline by coupling methanol with naphtha and preparation method thereof
  • Catalyst for preparing gasoline by coupling methanol with naphtha and preparation method thereof

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Effect test

Embodiment 1

[0045] The catalyst composition of the present embodiment for the preparation of gasoline by coupling methanol with naphtha consists of: 82g component A, 83.5g component B and 60g component C, adding 25.98g of nitric acid acidified pseudo-boehmite as binding agent kneading to obtain the catalyst described in this example.

[0046] The component A is a small-grain HZSM-5 molecular sieve modified by metal zinc, and the SiO of the small-grain HZSM-5 molecular sieve 2 / Al 2 o 3 The molar ratio was 21.

[0047] The component B is a Hβ zeolite molecular sieve modified by metal nickel and lanthanum, and the SiO of the Hβ zeolite molecular sieve 2 / Al 2 o 3 The molar ratio was 30.

[0048] The component C is a metal composite oxide, which contains oxides of nickel, zinc, aluminum and titanium.

[0049] The preparation method of the catalyst that is used for naphtha coupling methanol to prepare gasoline of the present embodiment comprises the following steps:

[0050] (1) Weigh...

Embodiment 2

[0058] The catalyst composition that is used for the preparation of gasoline of naphtha coupling methanol in the present embodiment is: the component C of 79.3g component A, 85.4g component B and 60g, the pseudoboehmite that adds the nitric acid acidification of 25.98g as viscous The mixture is kneaded to obtain the catalyst described in this embodiment.

[0059] The component A is a small grain HZSM-5 molecular sieve modified by metal zinc and cerium, and the SiO of the small grain HZSM-5 molecular sieve 2 / Al 2 o 3 The molar ratio was 25.

[0060] The component B is Hβ zeolite molecular sieve and HZSM-35 molecular sieve modified by metal nickel and lanthanum, and the SiO of the Hβ zeolite molecular sieve 2 / Al 2 o 3 The molar ratio is 30, the SiO of the HZSM-35 molecular sieve 2 / Al 2 o 3 The molar ratio was 40.

[0061] The component C is a metal composite oxide, which contains oxides of nickel, zinc, aluminum, titanium, and cerium.

[0062] The preparation method...

Embodiment 3

[0071] The catalyst that is used for the preparation of gasoline by coupling methanol with naphtha in this embodiment consists of: 26.5g component A, 170.8g component B and 40g component C, add 25.98g of nitric acid acidified pseudo-boehmite as viscous The mixture is kneaded to obtain the catalyst described in this example.

[0072] The component A is a small grain HZSM-5 molecular sieve modified by metal zinc and cerium, and the SiO of the small grain HZSM-5 molecular sieve 2 / Al 2 o 3 The molar ratio was 25.

[0073] The component B is Hβ zeolite molecular sieve and HZSM-35 molecular sieve modified by metal nickel and lanthanum, and the SiO of the Hβ zeolite molecular sieve 2 / Al 2 o 3 The molar ratio is 30, the SiO of the HZSM-35 molecular sieve 2 / Al 2 o 3 The molar ratio was 40.

[0074] The component C is a metal composite oxide, which contains oxides of nickel, zinc, aluminum, titanium, and cerium.

[0075] The preparation method of the catalyst that is used f...

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Abstract

The invention relates to the technical field of catalysts, in particular, to a catalyst for preparing gasoline by coupling methanol with naphtha and a preparation method thereof. The catalyst includes component A, component B and component C; the component A includes metal-modified small-grain HZSM-5 molecular sieves; the component B includes metal-modified HZSM-5 molecular sieves, HZSM-22 molecular sieves, HZSM-35 molecular sieves, Hβ zeolite molecular sieves, and H-type mordenite molecular sieves. or more; the component C includes a metal composite oxide. The catalyst of the present invention has the functions of light hydrocarbon aromatization and methanol alkylation, greatly reducing the content of durene; and the catalyst of the present invention has the function of isomerization, which effectively improves the octane number of gasoline; and the catalyst of the present invention has desulfurization The function can effectively reduce the sulfur content in gasoline, so that the sulfur content in the obtained product is lower than 10ppm, which meets the national V standard.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a catalyst for preparing gasoline by coupling naphtha with methanol and a preparation method thereof. Background technique [0002] The technology of producing high-octane gasoline by naphtha aromatization has related technologies at home and abroad. The typical one is the technology of producing high-octane gasoline from Luqi straight-run gasoline. This technology was put into operation in Poland in 1997 with 40,000 tons / year Industrial device, the technology is to convert naphtha into high-octane gasoline in a fixed-bed reactor using a highly active molecular sieve aromatization catalyst developed by the Catalyst Institute of the Siberian Branch of the Russian Academy of Sciences. [0003] The methanol-to-gasoline technology was first published by Mobil in 1976. The MTG process was developed on the basis of converting methanol into aromatics on a ZSM-5 molecular sieve catalys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/80C10G3/00
CPCB01J23/002B01J23/80B01J29/46B01J29/68B01J29/7615B01J29/80B01J2229/20B01J2523/00C10G3/49C10G2300/70C10G2400/02B01J2523/27B01J2523/31B01J2523/47B01J2523/847B01J2523/3712Y02P20/52Y02P30/20
Inventor 韩海波任潇航俞安平李治沈方峡李欣刘林娇李静静郝代军刘丹禾
Owner SINOPEC ENG GRP CO LTD
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