A kind of mixed aromatic hydrocarbon dealkylation tower top extraction paraffin cycle dehydrogenation device

Abstract

The invention discloses a dealkylation tower top extraction paraffin cycle dehydrogenation device for mixed aromatic hydrocarbons, relates to the technical field of dehydrogenation devices, and includes a dehydrogenation tank body, the side end of the dehydrogenation tank body is provided with an air inlet and an outlet. The air inlet and the air outlet are respectively fixed with an air inlet box and an air outlet box, and the inside of the air inlet box and the air outlet box are connected with a waterproof breathable membrane, and the inside of the dehydrogenation tank is provided with a stirring mechanism , the air inlet is provided with a guide structure, and the stirring mechanism rotates along the direction of the air inlet away from the air outlet under the action of the guide structure. The invention proposes a dealkylation tower top extraction alkane cycle dehydrogenation device for mixed aromatic hydrocarbons. The gas to be dehydrogenated enters the dehydrogenation tank from the gap between a pair of guide blocks, and combined with the action of the stirring mechanism, The path of the gas to be dehydrogenated to the gas outlet can be extended, thereby prolonging the contact time between the gas to be dehydrogenated and the lye, thereby improving the dehydrogenation effect.

Description

technical field [0001] The invention relates to the technical field of dehydrogenation devices, in particular to a dealkylation tower top extraction alkane cycle dehydrogenation device for mixed aromatic hydrocarbons. Background technique [0002] The alkane dehydrogenation device generally uses the alkaline washing tower as the main equipment to treat the hydrogen sulfide in the regenerated hydrogen. In the alkaline washing tower, the packing in the tower is the basic component of gas-liquid two-phase contact, which can provide sufficient The large surface area makes the ascending air flow and the descending alkali liquid in constant contact in the packing area, but the different packing has different effects on the operation of the alkaline washing tower. For example, ceramic packing is not resistant to heat and alkali corrosion and cannot be used in the alkaline washing tower. Corrosion of the medium; another example is polypropylene plastic packing, although it can withs...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of alkane circulation dehydrogenation device of the top extraction alkane of mixed aromatics, to solve the gap between the sprayed lye droplets in the prior art, and the gap between the gas to be dehydrogenated The contact area is small, resulting in incomplete dehydrogenation of the gas to be dehydrogenated, and a waste of time and energy for cyclic dehydrogenation, and the lye is sprayed from top to bottom, and falls rapidly under the action of its gravity. The short contact time also leads to the technical problems of incomplete dehydrogenation of the gas to be dehydrogenated and low dehydrogenation efficiency.

Images