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A liquid acid alkylation reactor and its application method

An alkylation reaction and liquid acid technology, applied in the field of reactors and alkylation reaction reactors, can solve the problems of large equipment, not compact enough structure, unsatisfactory mixing, etc., and achieve less internal components and easy processing , Improve the effect of micro-mixing level

Active Publication Date: 2017-03-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mixing of the acid hydrocarbon emulsion and other reactants in the riser is not satisfactory. In addition, the entire reactor system uses a riser, two horizontal tanks and a downcomer, and the equipment is huge and the structure is not compact enough.

Method used

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  • A liquid acid alkylation reactor and its application method
  • A liquid acid alkylation reactor and its application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The structure of the liquid acid alkylation reactor is as attached figure 1 As shown, the diameter of the reactor is 2m, the height is 15m, the height of the mixing zone is 2m, two sets of jet mixers are arranged in the mixing zone, the position of the gas outlet is 5m from the bottom of the reactor, and the position of the liquid phase product outlet is At 1.5 m from the bottom of the reactor, the height of the conical draft tube is at 6.5 m from the bottom of the reactor.

[0048] The above-mentioned liquid acid alkylation reactor was used for the alkylation reaction, and the reaction raw material was C4 liquefied gas, which was obtained from Shijiazhuang Oil Refining and Chemical Industry Co., Ltd. The mass percent composition is: 0.098% of propane, 39.36% of isobutane, 13.51% of n-butane, 1.39% of isobutene, 14.70% of 1-butene, 14.92% of cis-butene, 16.0% of trans-butene and 0.022% of pentane. The reaction feed with the ratio of alkanes to olefins is 8:1 with circu...

Embodiment 2

[0050] Adopt the liquid acid alkylation reactor in the embodiment 1 to carry out the alkylation reaction, the reaction process and the reaction raw materials are the same as the embodiment 1, the difference is that the liquid acid catalyst is 99.5% strongly acidic AlCl 3 Type ionic liquid (AlCl 3 :(C 2 h 5 ) 3 NHCl=0.67) (produced by Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences), the reaction raw material is C4 liquefied gas, and the source and composition are the same as in Example 1. The reaction feed with alkene ratio of 6:1 is formulated with isobutane, the reactor pressure is controlled at 0.25MPa, and the temperature is -3°C. The alkylation reaction product undergoes distillation to remove most of the carbon four components to obtain an alkylate oil. The dry point of the obtained alkylate oil is 189°C, the RON value is 96.2, and the MON value is 93.9.

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Abstract

The invention relates to a liquid acid alkylation reactor and an application method thereof. The liquid acid alkylation reactor comprises a mixing zone, a reaction zone and a liquid collection zone from top to bottom, wherein at least a group of jet flow mixers is arranged inside the mixing zone, each group of the jet flow mixers comprises at least two ejectors having the symmetrical center at the same horizontal plane, the liquid collection zone is connected to the inlet of the jet flow mixer through a circulation pump, the reaction zone is provided with a gas outlet, and a liquid phase product outlet is arrange below the gas outlet. According to the present invention, the liquid acid alkylation reactor is suitable for the alkylation reaction of the liquid acid adopted as the catalyst, and has characteristics of simple and compact structure, low investment, easy operation and maintenance, and power saving.

Description

technical field [0001] The invention relates to a reactor in the field of petrochemical industry, in particular to a reactor for carrying out alkylation reaction of isoparaffins and olefins under liquid acid catalysis. Background technique [0002] The alkylation reaction of isoparaffins and olefins mainly refers to the alkylation reaction of isobutane and butene. The essence of the reaction is the organic addition of alkane molecules to olefin molecules in the presence of acidic catalysts. reaction. Alkylation is an important process in the petrochemical industry. The isomeric C produced by the reaction of isobutane and butene under the action of a strong acid catalyst 8 Alkanes, known as alkylated gasoline. Alkylated gasoline has high octane number (RON94-96) and low Reid vapor pressure, very low sulfur content and olefin content, no benzene and aromatics, and is an excellent gasoline blending component. The use of new formula gasoline as the fuel for gasoline engines ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/26
Inventor 董明会温朗友宗保宁慕旭宏杨克勇俞芳喻惠利郜亮
Owner CHINA PETROLEUM & CHEM CORP
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