Portable nozzle and fluidized bed reactor with same

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...

AI Technical Summary

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 required.

Most of the above nozzles are aimed at the nozzle structure at the bottom of the reactor in the catalytic cracking process. The structure is complex and cumbersome, the operation is difficult, the processing cost is high, and it does not have the carrying capacity

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