SU837351A1 - Apparatus for carrying out heat mass exchange processes - Google Patents

Description

I

The invention relates to heat and mass transfer apparatus for carrying out the processes of absorption and rectification and can be used in the chemical, petrochemical, food and other industries.

A device for contacting gas and liquid is known, comprising a housing with nozzles for input and output of the interacting phases, a contact device with chutes, swirlers fl.

Also known mass transfer apparatus, comprising a housing with nozzles input and output of the interacting phases, the contact device with the grooves f 2T.

The disadvantage of these devices is the low efficiency of mass transfer processes. The gas velocity calculated for the total cross-section of the apparatus, usually does not exceed 1, O-1.5 m / s. This leads to an increase in the size of the apparatus (for example, the diameters of apparatuses in the non-reprocessing industry constitute a pore size of SO m). With significant sizes

Parameters are difficult to ensure a uniform distribution of the flows of the interacting phases due to the formation of stagnant zones, the presence of longitudinal mixing to the gas leaks without contact, with the liquid.

The purpose of the invention is to intensify the process.

 This goal is achieved by reducing the 1fodol mixing and eliminating the gas cap, the contact device is made in the form of ring shells mounted one above the other, and the upper sheath is provided with a crinkle. It is advisable to install the chute between the shells, while the lower end of the overlying shell is located inside the chute.

It is advisable to make the shells with a narrowing up, and the body of the apparatus with an extension in the upper part.

The bottom shell can be connected directly or through a gas box to the gas inlet.

The drawing shows the structural construction of a gadget apparatus.

The apparatus includes a housing 1 of round or rectangular cross section, gas inlet and outlet nozzles 2 and 3, liquids

4 and 5. The contact device is made in the form of ring shells 6, mounted one above the other. The upper shell is provided with a cover 7, and the lower through a gas chamber 8 is connected to the nozzle 2 for introducing gas. At the upper end of the shish and intermediate shells are installed gutters 9. The lower ends of the upper and intermediate shells are located inside the underlying gutters.

Thus, a central channel 10 for the reaction gas is formed in the contact device inside the shells, from which the latter is distributed along the grooves 9. A channel 11 is formed between the body of the apparatus 1 and the shells 6 along the entire perimeter for the gas leaving the apparatus.

The apparatus for carrying out heat and mass transfer processes as follows.

Gas through pipe 2 and gas chamber 8 enters the central channel 1O, bounded from above by krpik 7. Gas is distributed from the central channel through chutes 9 installed on the upper ends of the shells 6. The liquid enters the device body through pipe 4 and moves downwards. The flow of fluid along the height of the apparatus carried out; from the leaching chute to the underlying one. The gas from channel 10 is supplied to the chute 1, in which it is bubbled through a layer of fluid and interacts with a film of fluid flowing from the chute. It is contacted with a liquid, the gas through channel 11 formed by the shells and the body leaves the apparatus or enters the higher contact level, where the interaction process reverses and the liquid collects in the lower part of the channel 11 between the shell 6 and body 1 and is removed : tubes 5.

The proposed design provides an increase in process efficiency. In the known bubble-type apparatus, the contact elements of one stage are located on the horizontal diaphragm plates, which significantly increases the cross-section of the apparatus. Under these conditions, the slightest deviation from horizontality leads to uneven distribution of the flow, gas leakage without contact with the liquid, and longitudinal mixing.

By changing the location of the contact elements of one stage, the cross section of the apparatus is significantly reduced and an even gas distribution in the apparatus is provided without overshoot and a significant decrease in the longitudinal mixing, which leads to an increase in the mass transfer efficiency.

Claims (3)

1. An apparatus for carrying out heat and mass transfer of 1-process, including a body with input and output nozzles of interacting phases, contact device with} kelobs, characterized in that, in order to intensify the process by reducing longitudinal mixing and eliminating gas leakage, the contact device is made in the form of ring shells installed at a distance above each other ,. and the upper shell is provided with a lid. 2. The apparatus according to claim 1, characterized in that the gutters are installed between the shells, while the lower end of the overlying shells is located inside the gutter. 3. The device on PP. 1 and 2, characterized in that the shells are made tapering upward, and the body of the apparatus with an extension in the upper part. Sources of information taken into account in the examination 1. Patent of the GDR, No. 1098О6, cl. 12, a 5, 1974. 2.Certificate of the USSR N 19983О, cl. In O1D 53/18, 1966. TKv9H6ofnu Vmd eight