hydrogen sulfide

Hydrogen sulfide gases are formed in many technological processes, in particular, the processing of natural combustible fossil fuels. During the purification of coke oven gas containing cyanadium, from hydrogen sulfide by arsenic-sodic method, sodium thiocyanate is formed together with thiosulfate. Polymer sulfur, which is formed because of the acid decomposition of sodium thiosulfate, contains slightly soluble impurities. They aggravate its rheological properties and cause excessive high ash content of polymer sulfur up to 8%.

A large number of different methods is used in the industry for gases purification from hydrogen sulfide. Most of the early classifications of these methods are distinguished by the aggregate state of the sorbent. It is shown that such a classification does not fully cover existing industrial methods of purifying gases from hydrogen sulfide.

For defense the constructions elements from corrosion on the Black Sea shelf are often used organic and inorganic coatings, and as well corrosion-resistant alloys, which makes it possible to use equipment in more aggressive environments, expanding the conditions for their applying. However, the protective properties of anti-corrosion coatings in media in the presence of hydrogen sulfide and the simultaneous action of mechanical stress is not sufficiently studied.

At some sites of the sewage collector in Kharkov concentration of hydrogen sulfide in the underroof space exceeds in thousands of times daily average MPC. As a result the gaseous emissions from the sewage network in the city atmosphere the content of hydrogen sulfide in the atmosphere of residential development area may exceed the MPCd.a. The degasifier, installed above the sewage shaft efficiently rectifies gas releases. Design solutions are developed, which allow to harmonize degasifiers on sewerage nets with urban environment of different application.

New H2S adsorbent was synthesized on the basis of bentonite. It was analyzed using elemental and BET surface area analysis. Models and mathematical representations of mechanisms that govern the chemisorption of hydrogen sulfide on the chemically treated bentonite were presented. The models adequacy was assessed by means of statistic t-criterion.

The effect of gas rate on the plasma discharge stability and energy values of hydrogen sulfide decomposition has been established in plasma chemical reactor. Processes taking place in a swirling flow of hydrogen sulfide during its plasmolysis have been analyzed. Plasmotrone basic hydrodynamic model has been suggested.