Method and apparatus for extracting saturated steam in the synthesis of hydrogen chloride gas
AssigneeSigri GmbH
InventorsEduard Gohl, Johann Muller, Alois Spaderna
Life of this patent
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Abstract
A method and apparatus for generating saturated steam by the combustion of chlorine and hydrogen to produce hydrogen chloride gas includes combusting chlorine and hydrogen to produce hydrogen chloride gas in an elongated synthesis oven having an upper segment, a lower segment and a middle segment having a walll in the form of a heat exchanger. A heat transfer medium is recirculated between the heat exchanger and a steam generator while heating the heat transfer medium to between 170.degree. and 230.degree. C. by heat exchange between the heat of the combustion and the heat transfer medium. Saturated steam is generated from water at a pressure of at least 7 bar in the steam generator.
Claims7
A method for generating saturated steam by the combustion of chlorine and hydrogen to produce hydrogen chloride gas, which comprises combusting chlorine and hydrogen to produce hydrogen chloride gas in an elongated synthesis oven having an upper segment, a lower segment and a middle segment having a wall in the form of a heat exchanger, recirculating a heat transfer medium between the heat exchanger and a steam generator while heating the heat transfer medium to between 170.degree. and 230.degree. C. by heat exchange between the heat of the combustion and the heat transfer medium, and generating saturated steam from water at a pressure of at least 7 bar in the steam generator.
An apparatus for generating saturated steam by the combustion of chlorine and hydrogen to produce hydrogen chloride gas, comprising an elongated synthesis oven in which chlorine and hydrogen are combusted to produce hydrogen chloride gas, said synthesis oven having upper and lower segments being lined with impregnated graphite and a middle segment having a wall in the form of a metal heat exchanger section, a steam generator connected to said heat exchanger section in a closed circuit, and means for recirculating a heat transfer medium between said heat exchanger section and said steam generator, while heating the heat transfer medium to between 170.degree. and 230.degree. C. by heat exchange between the heat of the combustion and the heat transfer medium and generating saturated steam from water at a pressure of at least 7 bar in said steam generator.
Dependencies are inferred from the claim text.