Method and device for producing a gaseous medium comprising steam
AssigneeSteamex Group Sverige AB
InventorMichael Abrahamsson
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for producing a gaseous medium comprising steam, said steam being produced from a first fluid medium separated from the exhaust gas from combustion of a fuel in a steam generating step, said fuel being provided for burning for providing energy for heating said first fluid medium, comprising the steps of mixing the steam thus produced with exhaust gas from combustion of said fuel; and supplying at least one chemical substance different from air and water to said steam and exhaust gas mixture. The invention also relates to a device for producing a gaseous medium comprising steam.
Claims17
A method for producing a gaseous medium comprising exhaust gas and steam, comprising:
- combusting a fuel to generate heat and an exhaust gas having a temperature of 400-800° C.;
- generating steam from a first fluid medium comprising water using the generated heat;
- supplying an amount of second fluid medium comprising liquid water to the generated steam, whereby the second fluid medium is vaporized thus generating steam with increased water content;
- heating the steam with increased water content to 250-400° C. by means of the exhaust gas;
- and
- mixing the heated steam with increased water content and the exhaust gas to create a mixture of exhaust gas and steam,
- wherein the amount of second fluid medium is varied to control the dew point of the mixture of exhaust gas and steam, and
- wherein the steam with increased water content and the exhaust gas are not mixed prior to the mixing step, and
- wherein the second fluid medium is supplied as a mist having droplet size of less than 10 microns.
Dependencies are inferred from the claim text.