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Solid acid alkylation method of isoparaffin and olefin

A technology for isoparaffin and solid acid catalyst, which is applied in the treatment of hydrocarbon oil, hydrocarbon oil treatment products, production of liquid hydrocarbon mixture, etc., can solve the problems of solid acid alkylation catalyst poisoning, accelerated catalyst deactivation, etc.

Active Publication Date: 2020-12-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In addition, in the solid acid process, impurities in the raw materials can cause poisoning of the solid acid alkylation catalyst and accelerate catalyst deactivation

Method used

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  • Solid acid alkylation method of isoparaffin and olefin
  • Solid acid alkylation method of isoparaffin and olefin
  • Solid acid alkylation method of isoparaffin and olefin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0082] This example illustrates the alkylation catalyst employed in the present invention.

[0083] Add water and beat the Y-type molecular sieve numbered Ya to a solid content of 200kg / m 3 According to the molecular sieve slurry of Ya and Al1, the ratios of Ya and Al1 on a dry basis are 60:40, 80:20 and 95:5, respectively, and the aluminum sol numbered Al1 is added, stirred for 4 hours to make it evenly mixed, and then added to the dried mixed powder 3% by weight (based on the dry basis weight of molecular sieve and aluminum sol roasted at 600° C.) and nitric acid and squash powder, and adding water to ensure that the water-to-powder ratio is 0.8, kneading and extruding, the obtained wet strips are dried, After calcination, the shaped solid acid catalyst sample was obtained.

[0084] The solid acid catalyst samples were named 60A1, 80A1 and 95A1 respectively, and their properties are shown in Table 1.

[0085] The solid acid catalyst samples 60A1, 80A1, and 95A1 of Examples...

Embodiment 4-6

[0088] This example illustrates the alkylation catalyst employed in the present invention.

[0089] Add water and beat the Y-type molecular sieve numbered Ya to a solid content of 200kg / m 3 Molecular sieve slurry, according to the ratio of Ya and Al2 weight dry basis percentages of 60:40, 80:20 and 95:5, add the aluminum sol numbered Al2, stir for 4h, make it mix evenly, and add the dried mixed powder 3% by weight (based on the dry basis weight of molecular sieve and aluminum sol roasted at 600° C.) and nitric acid and squash powder, and adding water to ensure that the water-to-powder ratio is 0.8, kneading and extruding, the obtained wet strips are dried, After calcination, the shaped solid acid catalyst sample was obtained.

[0090] The solid acid catalyst samples were named 60A2, 80A2 and 95A2 respectively, and their properties are shown in Table 1.

[0091] The solid acid catalyst samples 60A2, 80A2, and 95A2 of Examples 4-6 were added under vacuum containing hydrogenati...

Embodiment 7-9

[0094] This example illustrates the alkylation catalyst employed in the present invention.

[0095] Add water and beat the Y-type molecular sieve numbered Ya to a solid content of 200kg / m 3 Molecular sieve slurry, according to the ratio of Ya and Al3 weight dry basis percentages of 60:40, 80:20 and 95:5, add the aluminum sol numbered Al3, stir for 4h, make it mix evenly, and add the dried mixed powder 3% by weight (based on the dry basis weight of molecular sieve and aluminum sol roasted at 600° C.) and nitric acid and squash powder, and adding water to ensure that the water-to-powder ratio is 0.8, kneading and extruding, the obtained wet strips are dried, After calcination, the shaped solid acid catalyst sample was obtained.

[0096] The solid acid catalyst samples were named 60A3, 80A3 and 95A3 respectively, and their properties are shown in Table 1.

[0097] The solid acid catalyst samples 60A3, 80A3, and 95A3 of Examples 7-9 were added under vacuum containing hydrogenati...

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Abstract

The invention relates to a solid acid alkylation method of isoparaffin and olefin, wherein the method comprises the steps of alkylation raw material pretreatment, alkylation reaction and reaction product separation, and is characterized in that the raw material pretreatment comprises the steps of pre-hydrogenation, rectification, dehydration, sulfide removal, nitrogen-containing compound removal and oxygen-containing compound removal; in the alkylation reaction, the solid acid catalyst particles have a macroporous specific volume of 0.30-0.40 ml / g, a ratio of the macroporous specific volume tothe particle specific length of 1.0-2.5 ml / g*mm and a total specific pore volume of at least 0.40 ml / g, and in the optional particles, a ratio of the specific surface area to the particle length is 3.4-4.5 cm<2> / g*mm, and the macropores refer to pores with diameters of more than 50 nm.

Description

technical field [0001] The invention relates to a method for alkylating isoparaffins and olefins in the presence of a solid acid alkylation catalyst. Background technique [0002] In the petroleum refining industry, the alkylation reaction process of isoparaffins and olefins is an important process for the production of clean, high-octane gasoline components. This kind of alkylated gasoline has low vapor pressure, low sensitivity, good anti-knock performance, no aromatics, olefins, and low sulfur content. It is an ideal blending component for high-octane gasoline. [0003] The raw materials used in the production of alkylated gasoline are isoparaffins and olefins, which mainly come from catalytic cracking, ethylene cracking, aromatics reforming and coal chemical coal-to-olefins equipment in petrochemical enterprises. Isoparaffins are mainly isobutane, and olefins are generally C 3 to C 5 Alkenes, mostly C 4 Olefins, in addition to n-butane and some impurities. [0004] ...

Claims

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Application Information

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IPC IPC(8): C10G50/00C10G69/12
CPCC10G50/00C10G69/123C10G2300/1081C10G2300/1092C10G2300/202C10G2300/70C10G2400/02
Inventor 李永祥胡合新张成喜付强任奎慕旭宏罗一斌
Owner CHINA PETROLEUM & CHEM CORP
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