Science and Education in Karakalpakstan issn 2181-9203 Science Magazine chief editor

Science and Education in Karakalpakstan. 2023 №2/1 ISSN 2181-9203 
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The laboratory unit has three main material streams: hydrogen sulfide, propane-butane gas 
mixture, nitrogen gas 99.5%. A hydrogen sulfide flow is supplied if a model gas mixture is being 
investigated. 
Hydrogen sulfide is produced in a hydrogen sulfide generator, then fed into a mixer, where a 
propane-butane mixture flow is also supplied, which is supplied from a cylinder through an 
adsorption column. 
An adsorption column with an inner diameter of 30 mm and a height of 170 mm is filled 
with a layer of silica gel with a fraction of 1.5-2 mm and a height of 130 mm and serves to remove 
propane-butane mixture of water vapor. Grids are installed in the lower and upper parts of the 
adsorption column to prevent entrainment of silica gel particles. 
With the help of shut-off and control valves, the content of the components of the model 
hydrogen sulfide-propane-butane mixture varies. Gas for the determination of hydrogen sulfide 
content taken at the sampling point. 
The prepared model gas mixture enters the electric heater. In the electric heater, the model 
gas mixture, reaching the required temperature (maximum possible value 120°C) is sent to the 
lower part of the inner cylinder of the reactor, in which the pressure is slightly above atmospheric. 
Under the action of a nanosecond corona discharge in the inner cylinder of the reactor, hydrogen 
sulfide contained in the test gas decomposes with the formation of hydrogen and elemental sulfur in 
the form of a highly dispersed mist. Thus, the products of the plasma-chemical reaction - sulfur and 
hydrogen, hydrocarbon gases and residues - exit from the reactor undecomposed hydrogen sulfide. 
The mixture is then fed into a sulfur trap where gaseous sulfur is captured. The sulfur trap is 
a cylindrical container made of heat-resistant glass with a wall thickness of 2.0 mm, a height of 170 
mm and an internal diameter of 85 mm. The container is filled with cleaned and dried sand with a 
fraction of 0.5-1.0 mm. The height of the sand layer is 140mm, at the top and bottom of the trap to 
prevent the entrainment of grains of sand broken glass with a particle size of 7.5–15.0 mm was 
laid with a layer height of 15 mm. It is necessary to note the peculiarity of the sulfur trap, which 
consists in the fact that the gaseous components from the reactor come from its upper to the lower 
part through a stainless steel tube mounted inside the cylindrical vessel, then rise up through a layer 
of sand and, already cleaned of fine sulfur, are removed through the upper branch pipe. 
Elemental sulfur already in a viscous form is removed from the lower part of the apparatus. 
After the sulfur trap, the gas passes through the sampling point, the safety tank. The 
container is a canister made of polymeric material with a capacity of 5 liters, filled in 3/7 parts of 
10% of the mass. aqueous solution of sodium hydroxide. The gas bubbles through the alkali 
solution, and the hydrogen sulfide remaining undecomposed in the streamer discharge, when passed 
through the absorbent, is absorbed to form sodium salts. After the container, the remaining gas 
mixture is discharged into the exhaust ventilation. The flow of gaseous nitrogen is supplied from the 
cylinder, divided into two streams: one stream - the main one - is sent to the space between the 
inner and outer cylinders at an overpressure of 0.3-0.4 atm., The second one is 2-3% by volume. - is 
fed into the pulse generator to create a neutral insulating medium and then leaves as losses through 
leaks between parts of the installation. The first flow of gaseous nitrogen is introduced into the 
reactor through the lower part, and is discharged through a pipe from above. Similarly, an 
experiment is being carried out to study the process of destruction of hydrogen sulfide using a 
nanosecond streamer discharge in associated petroleum gases. 
The electrical part of the installation works in the order shown below. When the protective 
screen is covered, the contact closes, which allows you to turn on the high-voltage pulse generator 
5. Then, a voltage of 6 kV is supplied from the power source to the high-voltage pulse generator, 
where the voltage rises to 300 kV. To limit the charging current of the capacitor, voltage is applied 
through the ballast resistor block. The operating mode of the pulse generator is controlled from an 

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