Up-flow reactor and application thereof

Abstract

The invention discloses an up-flow reactor, which comprises an initial distributor positioned at the bottom of the reactor and an intermediate distributor above the initial distributor. The initial distributor consists of a conical traverse baffle and a sieve plate positioned above the conical traverse baffle; and the intermediate distributor consists of an open pore sieve plate and a sieve plate string structure. The up-flow reactor provided by the invention can realize even distribution of gas in the reactor in short distance so as to improve the utilization rate of a catalyst and increase the space of a catalyst bed layer in the reactor. The up-flow reactor of the invention is particularly applied to a hydrogenation process of heavy oil (comprising wax oil, residual oil, coal liquefied oil and the like).

Description

technical field [0001] The invention relates to an upflow reactor and its application. Background technique [0002] Both the trickle bed and the packed bubbling bed are three-phase reactors filled with catalyst, and the difference between them lies in the different operation modes. In a trickle bed, the liquid and gas reactants flow through the catalyst bed from top to bottom, the gas phase is the continuous phase, and the liquid phase flows in a "trickle" manner; while in a packed bubbling bed, the gas-liquid reactants flow from the bottom And upward flow through the catalyst bed, at this time the liquid phase is the continuous phase, and the gas phase is the dispersed phase. [0003] Hydrogenation is an important technical route for the treatment of inferior raw materials. Through hydrogenation, impurities such as metals, colloids, residual carbon, sulfur, and nitrogen in heavy oil products can be effectively removed. At present, the trickle bed reactor is most commonly...

AI Technical Summary

Problems solved by technology

Therefore, the disadvantage of this design is similar to that of US4639354. A stagnant air chamber will be generated under the perforated plate, which reduces the utilization rate of the reactor space, and the small pore structure is easily blocked by impurities.

At the same time, due to the design of side openings, the sparger has high requirements on the level of processing and installation. Once the initial distribution is not ideal, the effect of the middle sparger on improving gas distribution is limited.

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