Logistics mixing distribution system

Abstract

Disclosed is a stream mixing distribution system, and the stream mixing distribution system is composed of a refrigerant pipe (3), a quench box (4), a rectification sieve tray (5) and a distributor disc (6), wherein, the refrigerant pipe (3) is positioned at the upper part of the quench box (4) or positioned in an annular space surrounded by the outer wall of the quench box (4) and the inner wall of a reactor (2), the rectification sieve tray (5) is positioned at the lower part of the quench box (4), the distributor disc (6) is positioned at the lower part of the rectification sieve tray (5), and a plurality of distributors (26) are evenly distributed on the distributor disc (6), and the system is characterized in that each distributor (26) is composed of a bubble cap (27), a center pipe (29), a journal (31) and a rotational flow structure (30), the center pipe (29) is a circular pipe with two open ends, and the bottom part thereof is fixed on the distributor disc, the bubble cap (27) of each distributor is fixed above the center pipe (29) through the journal (31), and the rotational flow structure (30) is fixed at the top part of the center pipe (29) or the outlet of the center pipe (29). The stream mixing distribution system has better mixing distribution effects, and can also save the inner space of the reactor.

Description

technical field [0001] The present invention relates to a flow mixing and distributing device between adjacent beds in a multi-bed downflow reactor, more specifically, to a gas-liquid two-phase reactant flow remixed and distributed downflow in a fixed bed hydrogenation reactor mechanical device. Background technique [0002] In the petrochemical industry, multi-bed downflow catalytic reactors are used in hydrotreating, hydrodesulfurization, hydrofining, hydrocracking and dewaxing processes. During these processes, the gas-liquid mixture flows side by side and passes through the catalyst bed for reaction. At the same time, the hydrogenation reaction is an exothermic process. When the stream passes through the catalyst bed, the temperature will gradually increase. Due to unevenness, channeling or short circuit is formed, and uneven temperature distribution occurs, which will reduce the utilization rate of the catalyst and affect the quality of the product. If the flow distri...

AI Technical Summary

Problems solved by technology

However, this structure has been proved to have the following disadvantages by practice: the cold and hot streams stay in the mixing chamber for a short time and cannot be fully mixed; the dispersion angle of the streams is small, and the utilization rate of the catalyst is low.

The swirl-type quenching box has excellent material flow mixing and heat exchange performance, but the quenching box has a three-layer structure and takes up a large amount of reactor space, especially when the existing hydrogenation reactor is technically transformed. powerless

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