SU853340A1 - Method and apparatus for cooling gas - Google Patents

Description

(54) GAS COOLING METHOD AND INSTALLATION FOR IMPLEMENTATION

one

This invention relates to installations and methods for cooling a gas when it is in direct contact with a refrigerant.

Such cooling methods are widely used in various ot-. engineering, where cooling and humidification of air is required.

Methods are known for cooling a gas by passing a gas stream through a hydrophilic material and adiabatically moistening the liquid in contact with the hydrophilic material 1.

Installations for cooling gas yKa3aHHbifvj by the method are known, which contain a horizontal casing with end inlet and outlet headers limited by grids, the space between which is filled with a hydrophilic material forming the channels for gas 1.

These methods and installations for gas cooling are characterized by an insignificant service life determined by the amount of liquid fed by the hydrophilic material.

Methods are also known for cooling a gas by passing a gas stream through a hydrophilic material.

adiabatic moistening with the liquid in contact with the hydrophilic material and subsequent separation of the liquid from the {2} stream.

Known and installation for cooling gases in this way, containing a horizontal casing with the end of the input and output headers, limited by grids,

10 the space between which the fluid-filled material forming the channels for the gas is filled and the hermetic fluid compartment located in the lower part of the casing and communicated

15 with hydrophilic material 2.

These methods and installations for gas cooling have a significantly longer service life due to the suction of hydrophilic material.

20 liquid.

However, when using the known methods of gas cooling in installations for their implementation at high rates of the cooled gas

25, the intensity of the heat-mass transfer process is insufficient to obtain the required parameters of the cooled gas.

The purpose of the invention is to intensify

Claims (2)

30 heat and mass transfer. This is achieved by throttling the gas stream before passing through the hydrophilic material and additionally mixing it with the coolant, as well as the end grill of the inlet collector provided with side hydrophilic material communicating with the liquid compartment and the gas channels narrowed from the side of the inlet manifold. The drawing shows schematically an installation for carrying out the described method of gas cooling. The installation contains a horizontal casing 1 with end inlet and outlet headers 2 and 3 bounded by grids 4 and 5, the space between which is filled with hydrophilic material b forming channels 7 for gas, and a sealed liquid compartment 8 located at the bottom of casing 1 and communicated with hydrophilic material b through vertical nozzles 9. The fluid compartment 8 communicates with the collector 2 via a tube 10, which has an exact hole in the horizontal section O. b. o Tortsova lattice. 4 is provided with a groove mi and from the side of the hydrophilic material b communicated with the liquid compartment 8 by means of an inlet pipe 11, and the gas channels 12 are narrowed from the side of the collector 2. Before operating, the installation is filled with liquid. The fluid compartment 8 is refilled through the tube 10. The air from the fluid compartment during refueling is removed through the overflow hole b. During operation, the cooled air passing through the channels 7 exchanges heat and mass with liquid to reach a relative humidity of 95-100%. The loss of fluid in the hydrophilic material b is replenished by entering from the liquid compartment 8 through vertical nozzles 9. The liquid is supplied to the hydrophilic material b only when the heat exchange unit operates under pressure created by the pressure difference in the liquid compartment 8 and in the hydrophilic material b. At low velocities of the cooled gas, the hydraulic resistance of the end grille 4 and channels in the hydrophilic material is small and the generated head ensures fluid supply only through the vertical pipes 9 to the peripheral channels 7 of the hydrophilic material 6, which does not always provide the required parameters of the cooling gas for range of gas flow rates. Intensification of heat and mass transfer at high gas flow rates is achieved by the fact that, before passing through the hydrophilic material 6, the gas flow is throttled in the end grid 4 and further mixed with the cooling fluid supplied by the feed pipe 11 under the pressure created by the pressure differential obtained at throttling. This groove is distributed evenly between the channels 12 on the side of the hydrophilic material 6 by means of the grooves, and is mixed with the cooled gas, cooling and moisturizing it adiabatically. Further thermal and humidity treatment of the cooled air is carried out in the channels 7 of the hydrophilic material. B. The economic efficiency of the invention is expressed in intensifying the process of heat and mass transfer at high velocities of the cooled gas. Claim 1. Gas cooling method by passing a gas stream through a hydrophilic material, adiabatic moistening the liquid in contact with the hydrophilic material and then separating the liquid from the stream, characterized in that, in order to intensify heat transfer, the gas flow before passing through the hydrophilic material throttled and further mixed with coolant. 2. Installation for cooling gas containing a horizontal casing with end inlet and outlet manifolds limited by grids, the space between which is filled with a hydrophilic material that surrounds the gas channels, and a sealed liquid compartment located at the bottom of the casing and communicating with the hydrophilic material This means that, in order to intensify heat and mass transfer, the end grating of the inlet manifold is provided with grooves on the side of the hydrophilic material communicated with the fluid compartment, and gas narrowed from the inlet manifold. Sources of information taken into account during the examination 1. USSR author's certificate No. 552493, cl. . F 28 C 3/08, 1975. 2. USSR author's certificate for application number 27273Я4, cl. F 28 C 3/08, 02.21.79 (prototype). N