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Method for on-line switching of light dydrocarbon aromatization reaction regeneration

A technology of reaction regeneration and aromatization, applied in chemical instruments and methods, isomerization hydrocarbon production, organic chemistry, etc., can solve the problems of long switching time, inability to continuously feed, manual switching, etc. The effect of improving production efficiency, extending operating cycle and life

Active Publication Date: 2010-06-30
淄博宜达新材料科技有限公司
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Problems solved by technology

[0010] Aiming at the problems of manual switching, long switching time and inability to continuously feed the system in the prior art, the present invention provides a method for on-line switching of light hydrocarbon aromatization reaction regeneration to solve the above problems

Method used

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  • Method for on-line switching of light dydrocarbon aromatization reaction regeneration
  • Method for on-line switching of light dydrocarbon aromatization reaction regeneration

Examples

Experimental program
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Embodiment

[0019] Embodiment: take carbon four, carbon five as example

[0020] Such as figure 1 As shown, the A reaction system includes the feed vaporizer 1, the heating furnace 2, and the reactor 3 connected sequentially according to the process sequence, and the B reaction system includes the feed vaporizer 1', the heating furnace 2', and the reactor 3 connected sequentially according to the process sequence. ', the reactors (3, 3') of the two sets of reaction systems are jointly connected with the gas-liquid separator 4, the top of the gas-liquid separator 4 is connected with the buffer tank 5 through a gas phase pipeline, and the reaction product at the bottom of the gas-liquid separator 4 goes to In the post-treatment process, the buffer tank 5 is respectively connected to the heating furnaces (2, 2') of the two sets of reaction systems.

[0021] The specific process of each set of reactors is as follows: the liquefied petroleum gas pretreated by impurities, cracked carbon five o...

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Abstract

The invention relates to a method for on-line switching of light dydrocarbon aromatization reaction regeneration, and belongs to the technical field of light dydrocarbon aromatization. The method is characterized by comprising two sets of identical reaction systems; each set of reaction system comprises a feed vaporizer, a heating furnace and a reactor which are connected sequentially according to a process sequence; reaction products of the two sets of reaction systems are cooled to enter the same gas-liquid separator; the top of the gas-liquid separator is connected with a buffer tank through a gas-phase pipeline; and the buffer tank is respectively connected with the heating furnaces of the two sets of reaction systems. Before the reaction system is switched, circulating dry gas of thegas-liquid separator is introduced into a reactor of a system to be switched for temperature rise through preheating until the temperature is between 450 and 570 DEG C, and then feed is switched to complete continuous on-line switching production. In the method, the dry gas is extracted from the top of a gas-liquid separation tank for the reaction products, so that a return line is shortened, andthe switching time is saved by 18 hours.

Description

technical field [0001] The invention belongs to the technical field of aromatization of light hydrocarbons, and in particular relates to an online switching method for regeneration of light hydrocarbon aromatization reactions. Background technique [0002] At present, some foreign light hydrocarbon aromatization technologies have entered the stage of industrial application. Domestic research on the aromatization of light hydrocarbons has also made some progress. For example, the Research Institute of Petroleum Science (RIPP) investigated the aromatization reaction of propane on ZRP molecular sieves and silicon-modified ZRP molecular sieves. On the ZRP molecular sieve, the xylene isomers in the liquid product are basically in a thermodynamic equilibrium distribution, and the para-selectivity is poor; on the silicon-modified ZRP molecular sieve, with SiO 2 With the increase of the content, the coverage degree of the active center on the outer surface of the ZRP molecular siev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C5/31C07C6/00C07C15/02
Inventor 宋金富
Owner 淄博宜达新材料科技有限公司
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