Efficient large-flux fixed valve tray

Abstract

The present invention relates to a high-effective large-flux fixed valve tower tray. It is formed from column plate, fixed valve and down-pipe. The fixed valve is formed by directly stamping the column plate self-body, and said fixed valve is composed of valve surface of fixed valve and valve leg of fixed valve, the valve surface is connected with column plate by means of valve leg of fixed valve, and the valve surface of the fixed valve has a downward bent folded edge. Said invented structure can raise treatment capacity of tower tray and its operation elasticity, at the same time the gas-liquid contact on the plate can be intensified so as to raise column plate mass transfer efficiency.

Description

technical field [0001] The invention relates to a high-efficiency and large-flux fixed valve tray, which is mainly used in various fractionation towers, absorption towers and desorption towers in industries such as oil refining, chemical industry, petrochemical industry and light industry. technical background [0002] Before the present invention is made, the trays in the prior art include sieve trays, valve trays, fixed valve trays and the like. The sieve tray has the advantages of low pressure drop, not easy to block, convenient processing, low cost, and no need for maintenance. However, the sieve tray has the disadvantages of large mist entrainment, serious liquid leakage, small operating flexibility, and low mass transfer efficiency. The valve tray overcomes some shortcomings of the sieve tray, and has the advantages of large operating flexibility, small mist entrainment, less liquid leakage, and high mass transfer efficiency. However, valve trays have a large amount ...

AI Technical Summary

Problems solved by technology

However, in the fixed valve trays mentioned in patents US5,360,583, US5,147,584, US5,975,504, etc., the air flow is blown into the liquid layer in the horizontal direction from the fixed valve side hole, and is different from that from the adjacent fixed valve side hole. The ejected air flow occurs in the middle of the two fixed valves (such as Figure 8 As shown), the two opposite airflows not only make the liquid on the tray splash upward, increase the entrainment of liquid foam, reduce the processing capacity and operating flexibility of the tray, but also consume a lot of energy and increase the pressure drop of the tray

At the same time, the air flow blows into the liquid layer in the horizontal direction, and the liquid will be blown into the side hole of the adjacent fixed valve to become liquid leakage, which increases the amount of liquid leakage, reduces the operating flexibility of the tray, and reduces the mass transfer efficiency of the tray.

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