RU1813471C - Contact member of vortex plate - Google Patents

Abstract

Use: for mass transfer processes. SUMMARY OF THE INVENTION: the contact element comprises a nozzle 1 provided with an additional nozzle 3 coaxially arranged with a gap 2 relative to its gap. The nozzles 1 and 3 are provided with inclined 4 and straight 5 vanes. The straight blades 5 are perforated 6 and provided with a collector 7 for supplying absorbent material. The upper part of the additional pipe is provided with a perforation 8. A separator 9–2 sludge is made in the upper part of the contact element.

Description

The invention relates to vortex contact elements used in mass transfer apparatus in the chemical, petroleum and other industries.

A contact element of a vortex plate is known, consisting of a perforated nozzle in the lower part along the entire perimeter of the nozzle, inside of which there are straight blades and a swirl with inclined blades Јlj.

This contact element is closest to the invention and is selected as a prototype.

Its disadvantage is the low intensity of the mass transfer process due to the uneven distribution of the absorbent over the nozzle section and the small phase contact surface. The concentration of fluid in the near-walled region is higher than in the central, which in turn contributes to the redistribution of the gas flow. The mass transfer coefficients, respectively, and the mass of the absorbed component are reduced. An increase in the gas velocity does not lead to a significant increase in the intensity of the process, but in turn intensifies the reverse mud flare. The latter leads to both a loss of absorbent and a decrease in the efficiency of the process on the above plates.

The aim of the invention is to intensify the process of mass transfer due to the uniform distribution of the absorbent and increase the contact surface of the phases

The goal is achieved in that in the contact element of the vortex plate, including the separator, a nozzle with inclined and straight blades located in the lower part, according to the invention, the nozzle is provided with a coaxial spacing with a gap relative to its additional

Oj

4 xj

a straight pipe, the lower cut of which is located at the level of the upper edges of the straight blades, the straight blades are hollow and perforated, equipped with a manifold for supplying absorbent material, and the upper part of the additional pipe is made perforated. .

 Accordingly, the absorbent for irrigation is supplied to the inner Zone, injected with gas through perforation in hollow straight blades. Since the number of these blades is large, a uniform distribution of fluid in the upward gas flow is achieved, increasing the intensity of the mass transfer process. Uniform irrigation of swirling upward gas flow in the annular gap between the inner and outer parts is carried out by the absorbent from the inner part through the perforation of the separation zones. As a result, the use of absorbent material is improved. Therefore, all the above distinguishing features are aimed at achieving the goal.

Figure 1 shows the contact element, General view; figure 2 is a section aa in figure 1.

The contact element consists of a nozzle 1 provided with an additional nozzle 3 coaxially arranged with a gap 2 relative to its nozzle 3. The nozzles 1 and 3 are provided with inclined C and straight 5 blades. Straight blades S are perforated 6 and provided with manifolds 7 for supplying absorbent material. The upper part of the additional pipe 3 is provided with a perforation 8. A separator 9 is made in the upper part of the contact element.

The contact element operates as follows.

The processed gas enters the additional pipe 3 and the annular gap 2, where it is in contact with the absorbent entering through the perforation 6

.

Q g n 5

0

5

0

5

straight blades 5. The mass transfer process takes place in a swirling flow. The effluent of the gas-liquid mixture j from the mass transfer zone passes to the separation zone 9. The presence of perforation 8 in the upper part of the additional pipe 3 irrigates the upward two-phase flow in the gap 2, which, on the one hand, increases the efficiency of the mass transfer process, on the other hand, leads to coagulation of small drops of liquid (absorbent), increasing the degree of purification of the exhaust stream in the separator 9. The flow rate of the treated gas through the pipe 1 and the gap 2 is determined by their hydraulic characteristics and is established taking into account the flow rate and concentration of absorbent entering through the perforation 8.

The technical and economic efficiency of the claimed device in comparison with the prototype consists in the intensification of the process due to the uniform distribution of absorbent and. increasing the contact surface of the phases.

Claims (1)

The claims The contact element of the vortex plate, including the separator, a nozzle with inclined and straight vanes located in the lower part, is so that in order to intensify the mass transfer process due to the uniform distribution of the absorbent and increase the phase contact surface, the nozzle is equipped with a coaxial located with a gap relative to its additional pipe, the lower cut of which is located at the level of the upper edges of the straight blades, the straight blades are hollow and perforated, equipped with a collector for The supply of absorbent material, and the upper part of the additional pipe is perforated. G , U P -1 - / / x;