Results for h2so3 translation from English to French

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h2so3

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English

to obtain a sulfurous acid solution (h2so3 and h2o);

French

pour obtenir une solution d'acide sulfureux (h2so3 et h2o);

Last Update: 2011-07-27
Usage Frequency: 1
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English

the percentage of molecular sulphur dioxide, h2so3, in free sulphur dioxide is calculated as a function of ph, alcoholic strength and temperature.

French

le pourcentage de dioxyde de soufre moléculaire, h2so3, dans le dioxyde de soufre libre, est évalué en fonction du ph, du titre alcoométrique et de la température.

Last Update: 2014-10-18
Usage Frequency: 2
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English

the sulphite process is less recent and uses a highly acidic solution of sulphurous acid (h2so3) and bisulphite ions (hso3-).

French

le procédé au bisulfite est le plus ancien et utilise un mélange d'acide sulfureux (h2so3) et d'ions bisulfites (hso3-) à un ph très acide.

Last Update: 2015-05-14
Usage Frequency: 1
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English

a method for reducing the concentration of a sulfur dioxide in a flue gas(1) is provided, comprising contacting the flue gas in two serially arranged contacting towers with a solution containing an ammonium phosphate (13, 22), such as (nh4)2hpo4, which reacts with the hydrated sulfur dioxide, h2so3, to produce a solution containing ammonium bisulfate and a protonated phosphate compound, such as nh4h2po4 (12, 6). this solution containing ammonium bisulfate and the protonated phosphate compound (12, 6) is transferred into an ammoniation tank and ammonia (7) is injected into the solution. the ammoniated solution (9) is transferred into an oxidation tank where oxygen (3) is injected into the ammoniated solution. the oxygen and ammonia react with the ammonium bisulfate to produce ammonium sulfate, which is discharged out of the process (19), while the oxygen oxidizes the protonated phosphate compound back into its active form. by using ammonium phosphate in the scrub solution, the vapor pressure of ammonia over the scrub solution is reduced, thereby reducing the reaction between gaseous ammonia and the sulfur dioxide that results in visible plumes of ammonium sulfites.

French

la présente invention concerne un procédé permettant de réduire la concentration d'anhydride sulfureux dans un gaz de carneau (1). ce procédé consiste, via deux tours reliées en série, à mettre le gaz de carneau se trouvant dans ces tours avec une solution renfermant un sulfate d'ammonium (13, 22), tel que (nh4)2hpo4, qui réagit avec l'anhydride sulfureux hydraté h2so3 pour produire une solution qui renferme un bisulfate d'ammonium et un composé phosphate protoné tel que nh4h2po4 (12, 6). cette solution renfermant du bisulfate d'ammonium et le composé phosphate protoné (12, 6) sont transferés dans une cuve d'ammonation dans laquelle on injecte de l'ammoniac (7). la solution ammoniaquée (9) est transférée dans une cuve d'oxydation où l'on injecte de l'oxygène (3). l'oxygène et l'ammoniac réagissent avec le bisulfate d'ammonium et produisent du sulfate d'ammonium, qui est évacué (19), cependant que l'oxygène ramène par oxydation le composé phosphate protoné à sa forme active. l'emploi de phosphates d'ammonium dans la solution de lavage permet de réduire la pression de la vapeur, ce qui atténue la réaction entre l'ammoniac gazeux et l'anhydride sulfureux sous forme de panaches visibles de sulfites d'ammonium.

Last Update: 2011-07-27
Usage Frequency: 1
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