SU1556725A1 - Heat-mass exchange apparatus - Google Patents

Abstract

The invention relates to chemical engineering, in particular, apparatus designed for heat and mass transfer processes of interaction of gas-liquid systems, accompanied by a rapid chemical reaction, and operating according to the principle of phase interaction in the downward direction, and allows to intensify the process of heat and mass transfer due to the creation of additional contact zones and expansion range of steady work. The heat and mass transfer apparatus includes a housing with contact devices placed in it, consisting of a truncated receiving cone, inside of which there is an additional spray cone having a common larger base with the receiving cone and pointing the smaller base down, and in the area of the multi-vane swirler, located at an angle to the generator unit. In the wall of the receiving cone holes are made, located on the same level with the lower cut of the additional spray cone. 1 hp f-ly, 3 ill.

Description

The device works as follows.

Gas and liquid are fed into the cylindrical housing 1 from above, mixed, and the downward gas-liquid flow is directed to the upper contact device 2. The liquid flowing down the inner surface of the additional truncated cone 5 is sprayed by the gas flow, forming a spray in the axial zone of the contact device 2. Then the gas and the liquid enter the receiving cone 3 and are directed to its smaller base, where the velocity of the gas-liquid flow increases dramatically. At the exit of the receiving cone 3, the gas-liquid flow enters the multi-swirl swirl 4, and that part of the liquid that moves in the form of a film on the inner surface of the receiving cone 3 is sprayed by the gas flow at the lower section of the smaller base of the receiving cone 3, and the other part of the fluid moving in the axial zone, it hits the base 10 of the multi-blade swirler 4. Then the gas-liquid flow hits the tangential vanes 13, the swirler 4, acquires a rotational motion and is directed to the inner surface of the body of the apparatus 1. One part of the gas-liquid flow enters the inclined plates 6 and is directed upward into the space between the outer part of the receiving cone 3 and the inner surface of the apparatus 1, the liquid is poured through the upper cut 1 of the plate 6 and flows down along with the gas to the downstream contact device 2.

When manufacturing a truncated cone 3 with openings 14 at the level of the lower base 8 of the truncated conical spraying conical 5, a part of the gas-liquid flow from the space between the upper outer surface of the receiving cone 3 and the housing 1 is thrown through the openings 14 and mixed with the fresh gas-liquid flow entering the contact device . Injection through the holes 14 is carried out due to the high velocities of the gas-liquid flow at the outlet of the spray truncated cone 5.

The use of an additional spray truncated cone, having a common larger base with a receiving cone and directed by a smaller base downwards, creates an additional contact zone in combination with more complete use of the working volume by creating a spray cone on the cut of a smaller base of an additional cone in the axial zone of the contact device.

The presence of inclined plates mounted at an angle to the generator of the apparatus on the inner surface of the body in the zone of a multi-blade swirler, and

their so that the lower cut of the plates is flush with the base of the multi-blade swirler, and the upper cut of the plates is above the upper cut

multi-vane swirler, provides a more efficient use of the working volume of the apparatus by directing part of the gas-liquid flow upward through inclined plates into the space between the outer surface of the receiving cone and the inner surface of the apparatus body, and also expands the range of sustainable energetically favorable operation due to the exclusion of a rotating fluid layer in the zone of a multi-blade swirl.

Manufacturing a truncated cone with openings flush with the lower section of the additional spray cone provides additional circulation of gas and liquid inside the contact device by injecting a part of the gas-liquid flow into the axial area of the contact device from the space between the outer surface of the receiving cone and housing apparatus.

5 The creation of gas-liquid spray plumes at the shear of the spraying and receiving cones, the dispersion of the liquid due to the impact of the gas-liquid flow on the swirl base, the circulation of the gas-liquid flow due to the presence of inclined plates and injection through the holes also provide multiple changes in the surface of the phase interaction inside the contact device, which significantly increases the efficiency of the mass transfer process during the chemisorption of the accompanying

5 quick chemical reaction.

Claims (2)

1. Heat and mass transfer apparatus containing a cylindrical body with conical contact devices arranged successively one above the other, consisting of a receiving truncated cone and a multi-blade swirl, characterized in that, in order to intensify the process of heat and mass transfer by creating additional contact zones and expanding the range of stable work, it is equipped with an additional truncated cone spray installed inside each receiving cone, having a common large cone with the receiving cone its base and directed smaller base down, and plates installed in the zone of multi-blade swirl of each contact device on the inner surface of the housing, 5 at an angle to the generator unit so that the lower cut of the plates is flush with the base of the multi-blade swirl, and the upper cut is above the upper cut of the multi-blade swirl, while the larger base of the receiving cone of the downstream contact device is located below the base of the multi-blade swirler of the upstream contact device. 2. An apparatus according to claim 1, characterized in that the receiving cone is made with openings located at the same level with the lower cut of the additional spray cone. Buff a FIG. 2 FIE1 2 eleven 12 fig.Z