Abstract: A system for distributing a fluid via a packing disposed in a container, the packing configured to have the fluid trickle from a top to a bottom thereof, includes at least one distributor member including a pressure conduit having at least one nozzle configured to discharge the fluid therethrough and a distributor channel adjoining the distributor member. A width of the distributor channel does not substantially exceed a diameter of the distributor member. The distributor channel defines at least one outlet slot disposed at a lower end of the distributor channel. The at least one outlet slot has a specified width and is configured to discharge the fluid from the distributor channel to the packing via a guide member. The distributor channel is configured to receive the fluid discharged from the at least one nozzle so as to provide a specified level of the fluid in the distributor channel. The distributor channel forms a ventable chamber above the specified fluid level.

Abstract: A process for a combustion of sulfur with an oxygen-containing gas to produce sulfur dioxide. The process includes introducing the sulfur and the oxygen-containing gas to a furnace. The sulfur is evaporated and subsequently a portion of the sulfur is oxidized to sulfur dioxide under sub-stoichiometric conditions in a first portion of the furnace. The sulfur dioxide formed in the first furnace portion is introduced together with any unoxidized sulfur to a second portion of the furnace which is disposed adjacent to the first furnace portion. The sulfur dioxide and unoxidized sulfur are subjected to post-combustion with the oxygen-containing gas in an inlet of a downstream waste heat boiler.

Abstract: There are described a process and a plant for producing sulfuric acid by catalytic oxidation of SO2 to SO3 and subsequent absorption of SO3 in sulfuric acid, wherein the SO3 is introduced into a first absorption stage and absorbed there in concentrated sulfuric acid, wherein the sulfuric acid having a higher concentration due to the absorption is passed through a heat exchanger and cooled, and wherein the non-absorbed SO3 is supplied to a second absorption stage for the further absorption in sulfuric acid. Before the first absorption stage a partial stream of SO3 is branched off and supplied directly to the second absorption stage.

Abstract: A system for distributing a fluid via a packing disposed in a container, the packing configured to have the fluid trickle from a top to a bottom thereof, includes at least one distributor member including a pressure conduit having at least one nozzle configured to discharge the fluid therethrough and a distributor channel adjoining the distributor member. A width of the distributor channel does not substantially exceed a diameter of the distributor member. The distributor channel defines at least one outlet slot disposed at a lower end of the distributor channel. The at least one outlet slot has a specified width and is configured to discharge the fluid from the distributor channel to the packing via a guide member. The distributor channel is configured to receive the fluid discharged from the at least one nozzle so as to provide a specified level of the fluid in the distributor channel. The distributor channel forms a ventable chamber above the specified fluid level.

Abstract: The invention relates to a method for producing gaseous hydrogen and strong sulphuric acid (97-100 wt-%) simultaneously from sulphur dioxide gas and water. Sulphur dioxide gas stream is divided into two separate sub-streams, the first sub-stream is routed for water decomposition in a partial thermochemical cycle of the hydrogen and sulphuric acid production and the second sub-stream is fed to the oxidation of the sulphur dioxide to sulphur trioxide.

Abstract: The invention relates to a method for producing gaseous hydrogen and strong sulphuric acid (97-100 wt-%) simultaneously from sulphur dioxide gas and water. Sulphur dioxide gas stream is divided into two separate sub-streams, the first sub-stream is routed for water decomposition in a partial thermochemical cycle of the hydrogen and sulphuric acid production and the second sub-stream is fed to the oxidation of the sulphur dioxide to sulphur trioxide.

Abstract: A process for a combustion of sulfur with an oxygen-containing gas to produce sulfur dioxide. The process includes introducing the sulfur and the oxygen-containing gas to a furnace. The sulfur is evaporated and subsequently a portion of the sulfur is oxidized to sulfur dioxide under sub-stoichiometric conditions in a first portion of the furnace. The sulfur dioxide formed in the first furnace portion is introduced together with any unoxidized sulfur to a second portion of the furnace which is disposed adjacent to the first furnace portion. The sulfur dioxide and unoxidized sulfur are subjected to post-combustion with the oxygen-containing gas in an inlet of a downstream waste heat boiler.

Abstract: There are described a process and a plant for producing sulfuric acid by catalytic oxidation of SO2 to SO3 and subsequent absorption of SO3 in sulfuric acid, wherein the SO3 is introduced into a first absorption stage and absorbed there in concentrated sulfuric acid, wherein the sulfuric acid having a higher concentration due to the absorption is passed through a heat exchanger and cooled, and wherein the non-absorbed SO3 is supplied to a second absorption stage for the further absorption in sulfuric acid. Before the first absorption stage a partial stream of SO3 is branched off and supplied directly to the second absorption stage.

Abstract: This invention relates to a method for the protection against corrosion of steel parts made of austenitic or semi-austenitic steel during the production of sulfuric acid. To improve the corrosion resistance of the steel parts which are in contact with the sulfuric acid, it is proposed to use austenitic or semi-austenitic steel which has a Cr content of 15 wt-% to 36 wt-% and an Ni content of 9 wt-% to 60 wt-% and in which the ratio of the chemical elements (Cr+Si)/(Ni+Mo) lies in the range from 0.9 to 1.9 or in which the ratio of the chemical elements Cr/(Ni+Mo) lies in the range from 0.8 to 1.5, and to additionally provide this steel part with an anodic corrosion protection.