Fixed-bed reactor for isoparaffin synthesis, multi-stage material inlet equipment used for reactor and method for synthesizing isoparaffin

A technology for synthesizing reactors and feeding equipment, applied in chemical instruments and methods, hydrocarbon oil cracking, chemical/physical processes, etc. Inactivation and other problems, to achieve the effect of simple structure, small pressure drop and good mixing effect

Active Publication Date: 2019-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, the current fixed-bed isoparaffin synthesis equipment and technology have the following problems that need to be improved: (1) single-stage feed, the ratio of alkanes to olefins in the react

Method used

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  • Fixed-bed reactor for isoparaffin synthesis, multi-stage material inlet equipment used for reactor and method for synthesizing isoparaffin
  • Fixed-bed reactor for isoparaffin synthesis, multi-stage material inlet equipment used for reactor and method for synthesizing isoparaffin
  • Fixed-bed reactor for isoparaffin synthesis, multi-stage material inlet equipment used for reactor and method for synthesizing isoparaffin

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Example Embodiment

[0086] Example 1

[0087] Example 1 illustrates the mixing effect of the multi-stage feeding equipment provided by this party.

[0088] Experimental method: use the multi-stage feeding equipment provided by this party, the specific structure is the same figure 1 As shown, the ratio of the cross-sectional area of ​​the fluid collecting plate 7 to the total cross-sectional area of ​​the fluid mixing chamber 9 is 47.5:1. The side plate of the fluid mixing chamber 9 of the multi-stage feeding device is provided with a third opening 15 in the shape of a small hole. The diameter of the third opening is 5 mm, the distance between adjacent third openings is 30 mm, and the ratio of the total opening area of ​​the feed distribution pipe 8 to the total cross-sectional area of ​​the fluid mixing chamber 9 is 1:25. The height of the fluid mixing chamber 9 is 100mm, and the shape of the cross-sectional area is circular. The fluid mixing chamber 9 and the fluid distribution plate 10 are spaced ap...

Example Embodiment

[0099] Example 2

[0100] With Figure 8 The solid acid alkylation reaction is carried out on a similar three-stage feed fixed bed experimental device shown. Among them, the inner diameter of the fixed bed reactor shell is 200mm, and the catalyst bed height of each stage is 1.5m, that is, the total effective catalyst bed height is 4.5m. Multi-stage feeding equipment is figure 1 As shown, the specific parameters are the same as in Example 1, and the total height of the equipment is 260 mm (that is, the distance from the bottom of the upper catalyst bed to the top of the next catalyst bed). The fresh raw material for the reaction is a mixture of isobutane and butene, where isobutane and butene form a mixture with a 30:1 ratio of alkanes and fed from the feed line of the distributor, and the molar ratio of alkanes in the reactor is 900:1 , The apparent flow velocity of the liquid mixture in the reactor is 0.02m / s, and the weight space velocity of the olefin is 0.05h -1 . The catal...

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Abstract

The invention relates to a fixed-bed reactor for isoparaffin synthesis, multi-stage material inlet equipment used for the reactor and a method for synthesizing an isoparaffin. The multi-stage materialinlet equipment comprises an upper bed layer supporting member, a lower bed layer fluid distribution member, a material inlet distribution tube, and a fluid collection plate and a fluid distributionplate arranged between the upper bed layer supporting member and the lower bed layer fluid distribution member, and the fluid collection plate is located above the fluid distribution plate; and fluidmixing chambers pass through the fluid collection plate and are fixed to the fluid collection plate, each fluid mixing chamber is provided with one corresponding fixed shaft which passes through the fluid mixing chamber from the top to the bottom and is fixed to the fluid distribution plate, and one spiral blade is fixed on the fixed shaft of each fluid mixing chamber. The multi-stage material inlet equipment provided by the invention can fully mix fluids, improve fluid distribution uniformity, prolong catalyst service life, reduce process energy consumption, and optimize product distributionof the isoparaffin synthesis.

Description

technical field [0001] The invention relates to a fixed-bed isoparaffin synthesis reactor, multi-stage feeding equipment and a method for synthesizing isoparaffin. Background technique [0002] Currently, one of the most important tasks of the refining industry is to provide clean and efficient transportation fuels. As an important transportation fuel, gasoline is widely used in transportation and other industries. With the increase of gasoline consumption and increasingly stringent environmental protection standards, how to solve the problem of producing clean and efficient gasoline has become a hot topic of research and discussion. [0003] Under the action of strong acid, the technology of generating alkylate oil from isoparaffins (mainly isobutane) and olefins (C3-C5 olefins) provides the possibility for clean production of gasoline. Alkylated oil has a high octane number and low vapor pressure, mainly composed of saturated hydrocarbons, and does not contain sulfur, ni...

Claims

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Application Information

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IPC IPC(8): B01J8/02C10G47/02
Inventor 朱振兴胡立峰毛俊义赵志海李永祥唐晓津郑博
Owner CHINA PETROLEUM & CHEM CORP
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