Radial fixed bed reactor for oxydehydrogenation of butylene

A technology of radial fixed bed and oxidative dehydrogenation, which is applied in the fields of chemical instruments and methods, organic chemistry, chemical recovery, etc., can solve the problems of short catalyst regeneration period and easy carbon deposition in the reactor, and achieve simple structure, short distance, The effect of pressure drop

Inactive Publication Date: 2013-05-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The main technical problem to be solved by the present invention is that the uneven mixing of butene, wat...

Method used

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  • Radial fixed bed reactor for oxydehydrogenation of butylene
  • Radial fixed bed reactor for oxydehydrogenation of butylene
  • Radial fixed bed reactor for oxydehydrogenation of butylene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A 100,000 tons / year butene oxidative dehydrogenation to butadiene plant, the reactor adopts figure 1 The structure type, water vapor and air enter from the water vapor air inlet 1, enter the mixing chamber 19 of the mixer through the porous distribution plate 2, the raw material butene enters the distribution chamber 6 from the butene inlet 5, and enters the mixing chamber through the diversion nozzle 3 19 is mixed with water vapor and air. After the mixed airflow enters the gas distributor 7 with a conical single-stage baffle 18, it enters the fan-shaped cylinder distributor 11 located on the outer ring of the reactor, and the reaction gas flows from the fan-shaped cylinder distributor with holes. The distribution holes of the catalyst bed 10 enter the catalyst bed 10, and the top of the catalyst bed 10 is provided with ceramic balls 9 and a cover plate 17. The reactant gas flows out of the catalyst bed and enters the inner porous wall cylinder 12, and finally flows o...

Embodiment 2

[0037] A 100,000 tons / year butene oxidative dehydrogenation to butadiene plant, the reactor adopts figure 1 The structure type, steam and air enter from the steam air inlet 1, enter the mixing chamber 19 of the mixer through the porous distribution plate 2, the raw material butene enters the distribution chamber 6 from the butene inlet 5, and enters the mixing chamber 19 through the diversion nozzle 3 Mixed with water vapor and air, the mixed airflow enters the gas distributor 7 with a conical single-stage baffle 18, and then enters the fan-shaped cylinder distributor 11 located on the outer ring of the reactor, and the reaction gas flows from the holes on the fan-shaped cylinder distributor The distributed holes enter the catalyst bed 10, and the top of the catalyst bed 10 is provided with ceramic balls 9 and a cover plate 17. The reactant gas flows out of the catalyst bed into the inner porous wall cylinder 12, and finally flows out of the reactor through the outlet 14.

...

Embodiment 3

[0042] A 100,000 tons / year butene oxidative dehydrogenation to butadiene plant, the reactor adopts figure 1 The structure type, steam and air enter from the steam air inlet 1, enter the mixing chamber 19 of the mixer through the porous distribution plate 2, the raw material butene enters the distribution chamber 6 from the butene inlet 5, and enters the mixing chamber 19 through the diversion nozzle 3 Mixed with water vapor and air, the mixed airflow enters the gas distributor 7 with a conical single-stage baffle 18, and then enters the fan-shaped cylinder distributor 11 located on the outer ring of the reactor, and the reaction gas flows from the holes on the fan-shaped cylinder distributor The distributed holes enter the catalyst bed 10, and the top of the catalyst bed 10 is provided with ceramic balls 9 and a cover plate 17. The reactant gas flows out of the catalyst bed into the inner porous wall cylinder 12, and finally flows out of the reactor through the outlet 14.

...

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Abstract

The invention relates to a radial fixed bed reactor for oxydehydrogenation of butylene. The radial fixed bed reactor adopts the technical scheme that the radial fixed bed reactor is a cylindrical vessel with a catalyst bed, a rapid mixing device is arranged at the top of the reactor and consists of a tapered tube and a straight tube, nozzles are mounted on a side wall of the tapered tube, a mixing cavity is formed in the tapered tube, a distribution cavity is formed between the tapered tube and the straight tube, a porous distribution plate is arranged at the top of the tapered tube, an inlet distributor is connected with the downside of the mixing device, the catalyst bed of the reactor consists of a fan-shaped cylinder distributor positioned at an outer ring and a center porous wall cylinder positioned at an inner ring, a catalyst is filled in the middle of the catalyst bed, and a cover plate sealing structure is arranged at the top of the catalyst, so that the problems existing in the prior art that a reactor is subjected to partial carbon deposition easily and a catalyst regeneration period is short due to the fact that butylene, water steam and air are not mixed uniformly are better solved, and the radial fixed bed reactor can be used for industrial production for preparing butadiene through the oxydehydrogenation of butylene.

Description

technical field [0001] The invention relates to a radial fixed-bed reactor for oxidative dehydrogenation of butene. Background technique [0002] Butadiene is an important monomer of synthetic rubber and synthetic resin, mainly used in the synthesis of butadiene rubber, styrene-butadiene rubber, nitrile rubber and ABS resin. Butadiene is also a variety of coatings and organic chemical raw materials. [0003] Oxidative dehydrogenation of butene is currently a relatively competitive process technology for producing butadiene. Butadiene is produced by oxidative dehydrogenation of butene in the presence of water vapor, using oxygen to combine with hydrogen in butene molecules to obtain butadiene and structurally stable water. This reaction is basically irreversible. The main reaction equation is as follows: [0004] [0005] Other side effects mainly include: [0006] [0007] [0008] The main factors affecting the oxidative dehydrogenation of butene are reaction ...

Claims

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Application Information

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IPC IPC(8): B01J8/02C07C11/167C07C5/48
CPCY02P20/584
Inventor 刘文杰黄云群郭毅施德
Owner CHINA PETROLEUM & CHEM CORP
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