SU1680299A1 - Gas-liquid appartus - Google Patents

Description

The invention relates to processes and devices of chemical technology and biotech2

nology. The aim of the invention is to improve the performance of the apparatus and the degree of use of the gaseous component in it. Gas-liquid apparatus includes a housing 1, a circulation pump 4, a circulation cup 6, consisting of two parts, tube sheet 13, gas distribution pipes 14. the lower ends of which are placed under the tube grid 13 and have openings for gas supply. In the gas distribution pipes 14 installed inserts 16. cylindrical parts of which are located at the level of the holes. 9

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Gas distribution pipes 14 are equipped with conical nozzles. The angle of expansion of the conical nozzles is 5-10 °. The diameter of the circulation cup 6 is 1.05-1.15 times the diameter of the circle described around the upper ends of the outer row of conical nozzles. The height of the conical nozzles is equal to the height of the gap between the lower and upper parts of the circulation cup 6 and is 0.25-0.30 equivalent diameter of the annular channel between the circulation cup 6 and the walls of the housing 1 of the apparatus. With the passage of fluid in the gas distribution pipe 14 in the gap between its

wall and insert 16 through the holes injected gas and fine crushing of the latter. The resulting gas-liquid mixture through a conical nozzle falls into the upper part of the circulation cup 6. Due to this. that the circulation cup 6 is open, the gas-liquid mixture circulates in the apparatus, and small gas bubbles are captured from the circulation cup 6 into the annular gap between the circulation cup 6 and the housing 1. The invention improves the yield of the target product. 2 Il. ^and

The invention relates to the field of processes and devices of chemical technology and biotechnology and can be used in chemical, microbiological, food and other industries for carrying out gas-liquid chemical reactions, absorption and formation processes on gas nutrient media.

The aim of the invention is to improve the performance of the apparatus and the degree of use of gaseous reagent in it.

Figure 1 schematically shows a gas-liquid apparatus, a general view; in FIG. 2, node I in FIG.

The gas-liquid apparatus consists of a vertical housing 1 with a lid 2 and a bottom 3, a circulation pump 4, a heat-exchanging device 5, a circulation cup 6, consisting of two parts, fittings 7 for introducing fluid into the apparatus, 8 for introducing gas, 9 for withdrawing exhaust gas, 10 - for the output of the finished product and 11 and 12, respectively, for the input and output of coolant or refrigerant. In the lower part of the apparatus installed tube rack 13. In the tube plate 13 fixed gas distribution nozzles 14. Their lower ends are displayed under the tube sheet 13, have holes 15 for gas supply, located on the same level. In the gas distribution pipes 14 installed'insert 16, which are rotation bodies consisting of two cones with oppositely directed tops and equal bases connected by a cylindrical part, the cross-sectional area of which is 0.9-0.95 cross-section of the gas-distributing pipes 14. The cylindrical part of the insert 16 located at the level of the holes 15 for gas supply and has a height equal to 4-5 diameters. The corners at the tops of the lower and upper ends of the insert 16 are respectively 40-60 and 10-20 °. The gas distribution pipes 14 are equipped with conical nozzles 17. The angle of expansion of the conical nozzles 17 is 510 °. The diameter of the circulation cup 6 is 1.05-1.15 times the diameter of the circle described around the upper ends of the outer row of conical nozzles 17. The height of the conical nozzles 17 is equal to the height of the gap between the lower and upper parts of the circulation cup and is 0.25-0.30 equivalent diameter of the annular channel between the circulating glass 6 and the walls of the housing 1 of the apparatus.

The device works as follows.

Liquid. Using a pump 4 is injected into the circulating nozzle 6. When gas is supplied to the reactor, a fitting 8 under the tube sheet 13 in the lower part of the circulation nozzle 6 forms a gas layer that pushes the liquid down until the openings 15 in the lower ends of the nozzles open 14 and the gas will not rush into the gas distribution pipes 14. The upward flow of fluid in the region of the gas distribution holes 15 is first subjected to a sharp narrowing by inserts 16, and then smooth expansion. When passing close to the openings 15, the liquid has a maximum speed. As a result, in the gap between the wall of the gap 5

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The distributor nozzle 14 with openings 15 and insert 16 forms an area of reduced pressure. gas is injected into the gap and finely crushed by a fluid flow. A fine gas-liquid mixture with a developed surface of contact of the phases is formed in the gap and at the exit from it. This contributes to the intensification of the process of transferring the reagent from gas to liquid. The smooth expansion of the gas-liquid mixture flow provided by the conical nozzle 17 prevents coalescence of small gas bubbles into large ones. The resulting jets of gas-liquid mixture, expanding, enter the upper part of the circulating glass 6. Due to the fact that the circulating glass 6 is open, due to the difference in density of the gas-liquid mixture in the circulating glass 6 and the liquid in the 20 annular gap between the circulating glass 6 and the housing 1 in the apparatus occurs the circulation of the gas-liquid mixture and the capture of small gas bubbles from the circulation cup 6 into the annular gap occurs. The reaction proceeds almost the entire volume of the apparatus.

The exhaust gas is discharged from the apparatus through the connection 9, and the finished product is discharged through the connection 10. The heat of reaction is removed with the help of a tallow exchange device 5. If necessary, the tally exchange device 5 can be used to heat the reaction mixture ,.

The invention allows to increase the output of the target product.

Claims (1)

Claim Gas-liquid apparatus containing a cylindrical body with lids, circled-40 An effective pump, a heat exchanger, fittings for input and output of phases and heat carrier, a tube plate with cylindrical gas distributors installed in it, the lower ends of which are placed under the tube plate and have openings in the side walls. located at the same level, inserts in the form of two vertical cones, 10 bases facing each other, connected by means of a cylindrical section with a cross-sectional area equal to 0.90.95 the cross-sectional area of the gas distribution nozzle, and 15 cylindrical sections opposite the openings in the lower ends of the gas distribution pipes the plot has a height equal to 4-5 of its diameters, and the angles at the tops of the lower and upper cones are, respectively, 40-60 and 10-20 °, characterized in that. that, in order to improve the performance of the apparatus and the degree of use of gaseous reagent in it, it is equipped with a composite 25 cup located along the axis of the body and made of two parts, and conical nozzles located on the upper parts of the gas distribution pipes and expanding towards the upper part of the body, the angle of expansion of the conical nozzles is 5-10 °, the height of the conical nozzles is 0.25-0.30 equivalent diameter of the annular channel between the walls of the cup and the cylindrical body, The distance between the parts of the glass is equal to the height of the conical nozzles, and the diameter of the glass is 1.05-1.15 times the diameter of the circle described around the upper ends of the outer row of conical nozzles. 1680299