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US 4,045,960 AGranted
Process for producing energy
AssigneeMetallgesellschaft Aktiengesellschaft
InventorsGerhard Cornelius, Friedemann Marschner, Emil Supp, Toma Varlam
Life of this patent
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Abstract
The sensible heat contained in exhaust gases formed in chemical reactions is utilized to produce energy. The exhaust gas is conducted as a counterflow to the product gas and is heated and expanded with the performance work.
Claims5
Process of recovering energy from a residual gas from a catalytic synthesis of methanol, comprising the steps of:
- a. reacting a gaseous mixture having a temperature in the range of 190.degree.-280.degree. C and containing hydrogen and carbon oxides in a methanol synthesis zone in the presence of a catalyst at a pressure of 25-150 bars and producing a methanol containing product gas,
- b. cooling said product gas by indirect heat exchange,
- c. in a separation zone, separating methanol from the cooled product gas,
- d. withdrawing from said separation zone residual gas containing hydrogen, carbon oxides and methane and having a pressure of 25-150 bars,
- e. mixing a first partial stream of said residual gas and fresh synthesis gas and feeding the mixture into said catalytic synthesis of methanol,
- f. withdrawing a second partial stream of said residual gas and heating it to a temperature of 50.degree.-500.degree. C and
- g. feeding the heated second partial stream of step (f) to an expansion turbine for a partial expansion with the performance of work.
4 more elements
Dependencies are inferred from the claim text.