摘要:
A process for the removal of gaseous components from a gas stream by liquid-phase absorption of the component in the treatment of the gas with a liquid, especially the absorption of sulfur trioxide from a gas stream obtained by the contactcatalysis oxidation of sulfur dioxide in the production of sulfuric acid, makes use of a uniflow vertical venturi absorber followed by a turbulencing device or horizontal venturi absorber and a counterflow column absorber or tower. The absorbing liquid is sulfuric acid.
摘要:
In a contact process for transforming sulfur dioxide to sulfur trioxide, between the contact stages there is provided an interstage absorber for removing sulfur trioxide for the gases emerging from a previous stage. The gases are passed by a venturi system in intimate contact with sulfuric acid into a settling chamber in which sulfuric acid is collected in the sump and then, by another gas/liquid contactor or reagitator, into a further settling chamber with an outlet at its upper end.
摘要:
A method of removing sulfur trioxide (SO3) and surfuric-acid mist from the end gas of a contact-catalysis process for the production of sulfuric acid involves intimately contacting the dry end gas, containing SO3 and/or sulfuric acid mist, with a water-diluted sulfuric-acid treating solution to increase the water-vapor content of the end gas in accordance with the vapor pressure of water in the dilute acid. The liquid phase, consisting of sulfuric acid present in the treating solution, formed by dissolution of SO3 in water and present as the sulfuric acid mist, is removed or separated from the gas which is released into the atmosphere substantially free from sulfuric acid or SO3.
摘要:
A PROCESS OF CATALYTICALLY REACTING SO2-CONTAINING GAS TO FORM SO3 IN A CATALYTIC PLANT INCLUDING A PLURALITY OF CATALYST STAGES AND IN WHICH SO3 IS CONDENSED BETWEEN CATALYST STAGES FORMING SULFURIC ACID, CHARACTERIZED IN THAT:
(A) THE SO3-CONTAINING GAS LEAVING THE FIRST OF TWO SUCCESSIVE STAGES IS TRANSFERRED ALONG A CLOSED FLOW PATH INTO THE SECOND OF SAID TWO STAGES; (B) A PARTIAL STREAM IS SEPARATED FROM SAID TRANSFERRED STREAM AND COOLED, AND SO3 IS CONDENSED FROM THE PARTIAL STREAM; (C) SAID PARTIAL STREAM FOLLOWING SAID CONDENSING IS COMBINED WITH THE BALANCE OF SAID TRANSFERRED STREAM AND AND THE COMBINED STREAM IS INTRODUCED INTO THE SECOND CATALYST STAGE.