Circulating feeding distributer with no guide plate

Abstract

The invention relates to a large tower feeding distributer. The circulating feeding distributer with no guide plate is composed of a feeding pipe, an inlet guide plate, an inner sleeve, a guide cover board and an anti-cyclone baffle plate, wherein the feeding pipe is a diffusion pipe; the inlet guide plate is arranged between the inlet pipe and the inner sleeve to form a streamline shape; the inner sleeve is an unimpeded ring channel; the cover board is at the top part of the inner sleeve, one end of the cover board is fixed on the tower wall, and the other end of the cover board is connected to the inner sleeve, so as to form a trumpet-shaped guide plate; the anti-cyclone baffle plate is arranged at the inner side of the inner sleeve and fixed on the inner sleeve, and the baffle plate plays a role in preventing vortex of ascending gas, and also plays a role in trapping entrained drip. The circulating feeding distributer has the beneficial effects that high-speed gas and liquid two-phase fluid flows through the unimpeded ring channel of the inner sleeve; the pressure drop is low; the damage caused by vibration is effectively reduced; the trumpet-shaped cover board removes the back step phenomenon formed by the ascending gas on the horizontal cover board; vortex of the gas near the tower wall is avoided, and the gas distribution is more uniform.

Description

technical field [0001] The invention relates to a large-scale tower and a gas-liquid two-phase feed distribution device, in particular to a circulation distributor suitable for a large-scale tower with gas-liquid two-phase feed without deflectors. Background technique [0002] The tower is a gas-liquid, liquid-liquid contact mass transfer equipment widely used in the petroleum and chemical industry. In the past ten years, the enlargement of packed towers and the application of new packing means that the ratio of tower diameter to packing diameter has increased and the radial distribution coefficient of packing has decreased. Therefore, it will be more difficult to transform the initial bad distribution into natural flow distribution, which is also positive It is an important reason why modern packed tower technology is more dependent on good gas-liquid initial distribution. [0003] A large number of scientific research and engineering applications have shown that a good in...

AI Technical Summary

Problems solved by technology

In this process, when the high-speed moving fluid passes through the guide plate, it changes the flow direction many times, and the turbulent kinetic energy of the fluid changes greatly in this area, and the energy loss of the fluid in the annular channel with the guide plate accounts for the whole More than 90% of the energy is dissipated, especially the first two deflectors near the inlet. Because the fluid flow in the area where the feed inlet and the first two deflectors are located is complex and changeable, it is not conducive to the flow of fluid after passing through the deflectors. The flow field is evenly distributed. When the fluid velocity is relatively high, this effect is very obvious, and the impact of the high-speed fluid on the deflector often causes vibration damage.

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