SU915873A1 - Catalytic reactor - Google Patents

Description

The invention relates to chemical technology and is aimed at the improvement of heat and mass transfer apparatus of the mixing type, used mainly in the diffusion region of heat and mass transfer.

The heat-mass-exchange shelf-type column apparatus is known, in which the heat-mass-exchange process takes place by direct contact of the exchanging media or by sparging {1].

The apparatus is countercurrent movement of gas and liquid. At the same time, bubble-type shelf apparatus, despite their relatively high efficiency in the kinetic and diffusion regions of heat and mass transfer, are difficult to manufacture and practically cannot be used in cases when there is a danger in pitch or clogging of perforated sheets, strainer-valve systems, etc. d.

Known contact apparatus, comprising a housing with nozzles input and output phases, the mixing chamber installed in the upper part of the body, a skirt, recessed into the glass.

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The diffusion part of the process (degassing of the solvent and non-polymerized monomer) is carried out in the case of the apparatus itself with countercurrent blowing of polymer particles with water vapor [2].

In the described apparatus, the process in the diffusion region is practically not organized and proceeds extremely inefficiently, which makes this type of apparatus unpromising for a number of heat and mass transfer processes in gas-liquid systems (adsorption, condensation, rectification, etc.), where the efficiency of the process is determined by the depth of its diffusion stage .

The purpose of the invention is to increase the efficiency of the heat and mass transfer process by creating a developed contact surface.

This goal is achieved by the fact that the contact apparatus, which includes a housing with branch pipes for input and output phases, a mixing chamber installed in the upper part of the housing, a skirt recessed into the glass, is provided with a separation chamber connected to the mixing chamber

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with a central gas passage pipe installed along the axis of the housing.

It is advisable to install the cup in the upper part of the body under the separation chamber, and to supply the body with partitions made in the form of mating straight and reverse truncated cones with vertical radial ribs.

FIG. 1 shows the structural diagram of the apparatus; in fig. 2 shows section A-A in FIG. 1; y in FIG. 3 shows a section BB in FIG. one.

The apparatus includes a housing 1, a separating chamber 2 with a skirt 3, a central gas transmission pipe 4 installed along the axis of the housing, a distribution box-tank 5, partition-5 ki, made in the form of mating straight lines 6 and inverse 7 truncated cones with vertical radial ribs 8, the mixing chamber 9 with the nozzles 10 and 11 of the input of the reaction phases, the gas outlet nozzle 12 and the nozzle 13 of the product.

The partitions 7 are fixed on the inner surface of the wall of the housing 1, and the partitions 6 and the distribution cup 5 are mounted on the gas transfer pipe 4 in such a way ₂₅ that the partitions 7 and the partitions 6 are mated along a conical surface, which ensures ease of manufacture and assembly ^{of the} mass transfer part ¹ of the apparatus. Vertical radial ribs 8 are installed on the upper planes of the partitions 6 and 7 and provide for the creation of a uniform annular film of liquid, which can be broken if there are inaccuracies in the manufacture and assembly of the partitions 6 and 7.

The skirt 3 of the separation chamber 2 zaglub- ³⁵ lena distribution in a glass 5, forming a water seal, eliminating the possibility of breakthrough of gas separated from the liquid phase in the separation chamber 2 to the branch pipe 12, bypassing the central pipe 4. The distributor gazoperepusknuyu glass 5 is provided with means known in the art (holes , tubes, etc., 'not shown); providing uniform distribution of liquid around the circumference of the first along the liquid cone plate. ⁴⁵

The device works as follows (see if water is saturated with carbon dioxide).

Water and carbon dioxide are fed into the chamber 9 through the pipes 10 and 11, ⁵⁰ are _intensivno mixing between a gas-water and the resulting mixture is introduced tangentially into the separation chamber 2. During the motion of the water chamber 9 and a vortex flow in the separation chamber 2 occurs 85-90 % of complete saturation of water with carbon dioxide. In the separation chamber. 2 in addition to saturation at the same time there is a separation of carbon dioxide and water in the field of centrifugal forces. Separated water flows through the skirt 3 into the dispensing cup 5, from where the partition 7 flows along the liquid along the liquid path.

Carbon dioxide through the gas passage pipe 4 enters the lower gas cavity of the housing 1 of the apparatus and moves countercurrent to the liquid flowing alternately from the partitions 6 and 7. Uniform distribution of the liquid along the flow line from the partitions 6 and 7 is provided with fins 8. Saturated almost completely with carbon dioxide · water removed from the apparatus through the pipe 13.

Similar to the process described above in the apparatus. processes of vapor condensation, liquid degassing, etc., take place.

The expected economic effect from the introduction of the invention will be about 56 thousand rubles. per year for the installation of SKI — 3 with a capacity of 4 t / h.

Claims (3)

Claim 1. A contact apparatus including a body with inlets and outlets for phases, a mixing chamber installed in the upper part of the body, a skirt recessed into the glass, characterized in that, in order to increase the efficiency of the heat and mass transfer process due to the creation of a developed contact surface, it is equipped with a separation chamber connected to the mixing chamber with a central gas transfer pipe installed along the axis of the housing. 2. The device for π. 1, characterized in that the body is provided with partitions made in the form of mating straight and reverse truncated cones with vertical radial ribs. 3. Apparatus according to paragraphs. 1 and 2, that is, that the glass is installed in the upper part of the body under the separation chamber.