TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Process: The sulfur dioxide is contained in exhaust gases formed in a diesel electro-generator. The sulfur dioxide formed during combustion of pyrolysis liquid products, reacts with the recovered hydrogen sulfide in three sub-stages over catalysts, comprises: an activated alumina; mixture of activated alumina with titanium oxide(1:1); superclaus hydrogen sulfide-oxidizing catalyst-iron and chromium oxides supported by alpha -alumina or silica. The solid carbonized product directed to gasification is first crushed and separated from the steel by sieving or by electromagnetic separation. The solid carbonized product gasification is carrying out by gas generators with raised or with horizontal flows or with pseudo-liquefied (boiling) bed using only air or oxygen blowing, or blowing of gases with steam, resulting in 950-1000 degrees C hot gaseous fuel containing sulfur (from gasified feedstock) in the form of hydrogen sulfide. The hot generator gas is fed to a chamber to obtain a gaseous heat carrier by mixing with the final cool gas of the process so as to form a gaseous heat carrier having a temperature of 650-700 degrees C for direct heating the feedstock in the pyrolysis reactor. The heat of exhaust gases, formed in the cleaned gaseous mixture combustion and in the liquid pyrolysis product combustion is utilized as a heat carrier for the sulfur regeneration process. The discarded tires are the raw material the surplus of hydrogen sulfide is formed in comparison with sulfur dioxide in exhaust gas from liquid combustion, in a molar ratio of 3.7:1. The hydrogen sulfide is removed from the processed exhaust gas by the hydrogen sulfide sorption using a sorbent comprises activated carbon or of its mixture with impregnated activated carbon, with the subsequent regeneration of the sorbent and the regenerated hydrogen sulfide direction to the main stream of hydrogen sulfide enters the modified Claus process. The heat for sulfur regeneration process in all its sub-stages is provided by exhaust gases. Preferred Components: The sulfur-contained raw materials for pyrolysis are discarded tires, other sulfur vulcanized polymers, natural materials comprising coals, oil shales and/or bitumen. The total liquid product of pyrolysis is of a quality suitable for burning or in engine electro-generators or in suitable furnaces for subsequent power generation. The solid product of the discarded tires pyrolysis consists of solid carbonized component and of steel component in form of wire cuts from tires cord. EXAMPLE - The exhaust gases were passed through an intermediate box and further transported by a blower into the reactor, where they displaced the air from the box and from the reactor, which was preliminarily filled up to 2/3 of its volume with catalyst. Then the car was refueled by pyrolytic liquid (6.7 l) and continued to work (without motion) and burned all the fuel in 134 minutes. In the inlet tube the exhaust gas was mixed with hydrogen sulfide flow from a balloon to form the reaction mixture. The rate of the hydrogen sulfide flow was 1.1 l/minute, which corresponds to the flow of hydrogen sulfide extracted from pyrolysis and gasification gases while 6 kg of liquid are produced. The molar ratio between hydrogen sulfide and sulfur dioxide was 3.7:1, as it is in real conditions in the recycling process for discarded tires. The reactor-converter for the Claus catalytic reaction was a horizontal cylindrical vessel of 7 l volume with side covers that was equipped with a horizontal rotating shaft and with mixing blades. It was also provided with devices for the charging and discharging of the catalyst, can be heated electrically by means of a spiral located around its outer surface. In the first reactor the activated alumina catalyst was used in the form of balls of 4.8 mm diameter. The reaction mixture after the reactor was fed to the cooler and was cooled down to 140 degrees C. The formed sulfur was condensed and fed to the separator (the lower empty part of the cooler). There the vapors and gases were separated from sulfur and were fed to the tube heater that was heated by an electric coil up to 220 degrees C, and was fed to the second preliminary heated reactor. The catalyst mixture used was activated alumina and titanium dioxide. After passing the reactor, the reaction mixture was fed to the second sub-stage cooler and after separation of the formed sulfur it was fed to the third sub-stage. The residual hydrogen sulfide was directly oxidized by injected air over the Superclaus oxidizing catalyst ( alpha -alumina supported iron and chromium oxides) at 220 degrees C. Further the reaction mixture was cooled in the third sub-stage cooler down to 140 degrees C and was separated from the condensed sulfur. For the extraction of hydrogen sulfide residue the exhaust gas was additionally fed to an absorber filled with activated carbon of type GS Sulfursorb Plus (RTM: Non-impregnated, lignite coal based activated carbon) with the addition of activated carbon impregnated with soda caustic to give total sulfur recovery was 99.7%.