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Method for preparing tert-amyl methyl ether by etherifying C5 raffinate

A technology of methyl tert-amyl ether and raffinate, which can be used in ether preparation, unsaturated compound addition to prepare ether, chemical instruments and methods, etc., and can solve problems such as instability and short catalyst life.

Active Publication Date: 2012-07-11
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Described a kind of C3~C7 distillate etherification catalyst among CN1146927A, this catalyst is to take acidic cation exchange resin as carrier, and active component is mainly palladium and different cocatalyst Si, Al, B to carry on the carrier jointly, is combined into different The catalyst is used in the etherification reaction and also plays a selective hydrogenation role. The main purpose is to overcome the shortcomings of short catalyst life and instability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Soak 200ml of cation exchange resin (brand name D72 (Tianjin)) in 400ml of methanol solution for 4 hours, then wash with deionized water until neutral, dry in vacuum at 80°C for 12 hours, then mix the dried cation resin with 300ml of deionized Add water to a container, add 50mlRh to the container 2+ Concentration is the ternary solution of rhodium nitrate, nitric acid, water of 6.98g / l, carry out ion exchange, solution H + The concentration is 0.3mol / L. The exchange time was 4 hours, then stirred, filtered out the waste liquid, washed with deionized water to neutral dryness, and then used to obtain a catalyst TM-1 with a rhodium content of 0.36% (weight, on a dry basis).

Embodiment 2

[0017] Catalyst TM-1 that makes in embodiment 1 is immersed in by 0.15N Al (NO) 3 Solution 2ml, nitric acid and 300ml deionized water solution, carry out ion exchange, solution H + The concentration is 0.2mol / L. After soaking for 8 hours, it was washed with deionized water until it became neutral, and then vacuum-dried at 80° C. for 12 hours to obtain the modified catalyst TM-2 containing 0.15 wt % of co-catalyst.

Embodiment 3

[0019] The catalyst TM-1 that makes among the embodiment 1 enters into by 0.15NAl (NO) 3 Solution 4ml, nitric acid and 300ml deionized water were prepared for ion exchange, solution H + The concentration is 0.2mol / L. After soaking for 8 hours, it was washed with deionized water until neutral, and vacuum-dried at 80° C. for 12 hours to obtain a modified catalyst TM-3 containing 0.3 wt % of a cocatalyst.

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PUM

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Abstract

The invention relates to method for preparing tert-amyl methyl ether by etherifying C5 raffinate. A catalyst consists of a major catalyst, an aid and an acid carrier, wherein the major catalyst is one or more of Ru, Rh, Co, Mo, Ni or a corresponding soluble salt thereof; the content of the major catalyst is 0.1-10 percent based on the weight of the catalyst; the aid is one or more of third or fourth main family elements in a periodic table of elements; the content of the aid is 0.05-1 percent based on the weight of the catalyst; the carrier is macroporous networked styrene-series acid cation exchange resin; the carrier is treated through an alcohol solution; a major catalyst soaking liquid is an acid solution; the H<+> concentration is 0.1-2.0 mol / L; and the catalyst has the advantages of high activity, high functionality, and the like.

Description

Technical field: [0001] The present invention relates to a C 5 Method for preparing methyl tert-amyl ether by etherification of raffinate. Background technique [0002] Methyl tert-amyl ether (TAME) is a new gasoline additive to increase the octane number of gasoline. It plays an important role in making up for the fact that the production of MTBE cannot meet the demand for gasoline. It can improve the antiknock performance and environmental protection performance of gasoline. , is a very cost-effective and ideal blending component. C 5 The raffinate is C 5 The fraction with more content is a remaining component obtained after the separation of isoprene (IP), cyclopentadiene (CDP) and piperylene (PIP). Pentene is a good available resource. Using this C 5 Raffinate and methanol etherification preparation TAME is to utilize C 5 It is an effective way for further deep processing of raffinate. The key technology of its etherification is the preparation of catalyst. Ther...

Claims

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Application Information

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IPC IPC(8): C07C43/04C07C41/06B01J31/28
Inventor 石大川赵英翠刘丽明刘玲肖建业
Owner PETROCHINA CO LTD
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