Portable nozzle and fluidized bed reactor with same

A nozzle and nozzle body technology, applied in the field of carrying nozzles, can solve the problems of lack of carrying capacity, complex structure and equipment, cumbersome process, etc., and achieve good catalyst fluidization effect and gas-liquid distribution effect, which is beneficial to the reaction process and bed layer The effect of temperature uniformity

Active Publication Date: 2010-06-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Regardless of whether it is internal circulation or external circulation, its disadvantages are that the structure and equipment are complex, the process is cumbersome, and mechanical circulation pumps made of high-temperature and high-pressure materials are usually req

Method used

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  • Portable nozzle and fluidized bed reactor with same
  • Portable nozzle and fluidized bed reactor with same

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Embodiment Construction

[0015] The structure of the carrying nozzle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0016] Such as figure 1 Shown, the mouth body 10 of carrying nozzle of the present invention is tubular cylinder, and its one end is provided with mixture outlet 7, and the other end is feed end; Oil ascending section 2, constricting section 3, throat pipe 4, diffusing section 5 and gas ascending section 6; the feed end of the nozzle is provided with a raw oil feed pipe 1 and a circulating oil inlet 8, and a gas inlet 9 is provided at the gas ascending section; The raw material oil feed pipe 1 is coaxial with the nozzle body 10, and the nozzle 11 extends into the constriction section 3 all the time.

[0017] In order to obtain a higher linear velocity of raw material oil, the nozzle 11 is set in a contracted shape, and the contraction angle (expressed by α) of the nozzle is generally selected from 5 to 30 degrees, preferably 1...

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Abstract

The invention discloses a portable nozzle and a fluidized bed reactor with the same, and belongs to the field of petro-chemical machinery. The portable nozzle takes oil of which partial pressure is higher than reaction pressure as power; and then the oil flows into a venture tube through the nozzle to form a draft which carries the hot oil to circulate. The portable nozzle of the invention is applied to the fluidized bed reactor, can completely satisfy a large amount of circulation liquid phases needed by good gas-liquid distribution and normal solid-phase fluidization in a hydrogenation process of a fluidized bed by using together with a fluidized bed catalyst with a relatively small grain size and a specially designed tree-phase separator, is more in favour of a reaction process, homogenizes bed layer temperature and achieves better catalyst fluidization effect and gas-liquid distribution effect.

Description

technical field [0001] The invention relates to a nozzle, in particular to a carrying nozzle suitable for a three-phase fluidized bed hydrogenation reactor. Background technique [0002] In the three-phase fluidized bed hydrogenation process, in order to facilitate the reaction, make the bed temperature uniform, form a good gas-liquid distribution and make the catalyst fluidized normally, a large amount of circulating oil is required in the hydrogenation process (the circulating volume is generally fresh raw material more than ten times the oil volume). The resistance drop of the three-phase ebullating bed hydrogenation process in which the catalyst exists in a boiling state is relatively small. According to the United States 400 meters 3 It is reported that the total resistance drop (including static pressure, catalyst bed resistance and pore resistance drop, etc.) of the hydrogen-oil method industrial device is about 0.56-0.7 absolute pressure. If the oil static pressur...

Claims

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Application Information

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IPC IPC(8): B01J8/18B01J19/26
Inventor 刘建锟杨涛贾丽胡长禄蒋立敬贾永忠
Owner CHINA PETROLEUM & CHEM CORP
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