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Catalyst for preparing aromatic hydrocarbons from methanol and application thereof

A catalyst, methanol technology, applied in molecular sieve catalysts, physical/chemical process catalysts, hydrocarbon production from oxygen-containing organic compounds, etc., can solve the problem of low aromatization activity

Active Publication Date: 2019-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is the problem of low aromatization activity of the existing methanol-to-aromatics catalyst, and a new aromatization catalyst is provided

Method used

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  • Catalyst for preparing aromatic hydrocarbons from methanol and application thereof
  • Catalyst for preparing aromatic hydrocarbons from methanol and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Mix 40 grams of zinc nitrate hexahydrate, 8.4 grams of copper nitrate trihydrate, 0.006 grams of calcium bicarbonate and 210 grams of water, and stir evenly to obtain solution I. Add 120 grams of hydrogen-type ZSM-5 molecular sieve into solution I, mix well, heat and evaporate excess water, and roast at 550°C for 4 hours to obtain a modified molecular sieve. Mix 11.3 grams of diammonium hydrogen phosphate and 90 grams of water, and stir to obtain solution II. After molding the above-mentioned modified molecular sieve, add it into solution II, mix evenly, heat and evaporate excess water, and then roast it at 550°C for 4 hours to obtain a methanol-to-aromatics catalyst, which is designated as MTA-1.

[0043] Catalyst evaluation was carried out on a methanol to aromatics unit. The feed is pure methanol, the reaction temperature is 480°C, the reaction pressure is 0.01MPa, and the methanol weight space velocity is 1h-1 .

[0044] The composition and evaluation results of t...

Embodiment 2

[0046] Mix 40 grams of zinc nitrate hexahydrate, 8.4 grams of copper nitrate trihydrate, 0.056 grams of calcium bicarbonate and 210 grams of water, and stir evenly to obtain solution I. Add 120 grams of hydrogen-type ZSM-5 molecular sieve into solution I, mix well, heat and evaporate excess water, and roast at 550°C for 4 hours to obtain a modified molecular sieve. Mix 11.3 grams of diammonium hydrogen phosphate and 90 grams of water, and stir to obtain solution II. After molding the above-mentioned modified molecular sieve, add it into solution II, mix evenly, heat and evaporate excess water, and then roast it at 550°C for 4 hours to obtain a methanol-to-aromatics catalyst, which is designated as MTA-2.

[0047] Catalyst evaluation is the same as in Example 1.

[0048] The composition and evaluation results of the catalysts are listed in Table 1.

Embodiment 3

[0050] Mix 40 grams of zinc nitrate hexahydrate, 8.4 grams of copper nitrate trihydrate, 0.56 grams of calcium bicarbonate and 210 grams of water, and stir evenly to obtain solution I. Add 120 grams of hydrogen-type ZSM-5 molecular sieve into solution I, mix well, heat and evaporate excess water, and roast at 550°C for 4 hours to obtain a modified molecular sieve. Mix 11.3 grams of diammonium hydrogen phosphate and 90 grams of water, and stir to obtain solution II. After molding the above-mentioned modified molecular sieve, add it to solution II, mix evenly, heat and evaporate excess water, and then roast it at 550°C for 4 hours to obtain a methanol-to-aromatics catalyst, which is designated as MTA-3.

[0051] Catalyst evaluation is the same as in Example 1.

[0052] The composition and evaluation results of the catalysts are listed in Table 1.

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Abstract

The invention relates to a catalyst for preparing aromatic hydrocarbons from methanol, and mainly solves the problem of low aromatization activity of catalysts in the prior art. The catalyst for preparing the aromatic hydrocarbons from the methanol comprises the following components in parts by weight: a) 0.5-10 parts of a phosphorus element or an oxide thereof; b) 1-15 parts of at least one element selected from group II B of the periodic table or and an oxide thereof; c) 0.001-1 part of an alkaline earth metal element or an oxide thereof; d) 0.1-10 parts of a copper element or an oxide thereof; and e) 50-90 parts of a silicon-aluminum molecular sieve, according to the technical scheme, the problem is well solved, and the catalyst can be used in industrial production of preparing of the aromatic hydrocarbons from the methanol.

Description

technical field [0001] The invention relates to an aromatization catalyst and its application, in particular to an aromatization catalyst for producing aromatics from methanol and its application. Background technique [0002] As basic organic chemical raw materials, more than 85% of aromatics in my country are produced through petroleum routes. On the one hand, my country's oil and natural gas resources are in short supply, leading to rising production costs of aromatics; on the other hand, my country's coal resources are relatively abundant, and a large amount of coal-based methanol production capacity is looking for a way out. Therefore, methanol to aromatics is a very promising technical route. [0003] Chinese patent CN1880288A introduces a process and catalyst for the conversion of methanol to aromatics. The process uses small-grain ZSM-5 zeolite as a carrier and uses a binder (pseudoboehmite, γ-alumina or diatomaceous earth) Extruded after mixing, and finally loaded...

Claims

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Application Information

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IPC IPC(8): B01J29/46C07C1/20C07C15/02
Inventor 滕加伟陈希强
Owner CHINA PETROLEUM & CHEM CORP
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