Method of deacidifying gases

Claim 1

A METHOD OF REMOVING ACID CONSTITUENTS SELECTED FROM THE GROUP CONSISTING OF CARBON DIOXIDE AND HYDROGEN SULFIDE FROM A GAS CONTAINING THE SAME DURING PASSAGE THEREOF THROUGH A GAS WASHER, COMPRISING THE STEPS OF PASSING A GAS CONTAINING GASEOUS ACID-FORMING CONSTITUENTS SELECTED FROM THE GROUP CONSISTING OF CARBON DIOXIDE AND HYDROGEN SULFIDE THROUGH A FIRST STAGE OF THE GAS WASHER IN WHICH AN AQUEOUS SOLUTION OF AN AMMONIUM SALT ADAPTED TO REACT OF THE PRESENCE OIF WATER WITH SAID GASEOUS ACID-FORMING CONSTITUENTS TO FROM THE CORRESPONDING ACID SALT THEREOF IS CONSTINUOUSLY PASSED IN COUNTERCURRENT AND RECIRCULATED THROUGH THE PASSING GAS SO AS TO REMOVE A PORTION OF SAID GASEOUS ACID-FORMING CONSTITUENTS FROM SAID GAS AND FROM THE CORRESPONDING AMMONIUM ACID SALT THEREOF; PASSING SAID GAS CONTAINING REMAINING GASEOUS ACID-FORMING CONSTITUENTS THROUGH A SUBSEQUENT SECOND STAGE OF THE GAS WASHER IN WHICH AN AQUEROUS AMMONIUM CURRENT AND RECIRCULATED THROUGH THE PASSING GAS AT A RATE CURRENT AND RECIRCULATED THROUGH THE PASSING GAS AT A RATE ADAPTED TO REMOVE SAID REMAINING GASEOUS ACID-FOARMING CONSTITUENTS FROM SAID GAS WHILE SAID GAS PASSES THROUGH SAID SECOND STAGE OF THE GAS WASHERS SO AS TO FROM THE CORRESPONDING AMMONIUM SALT OF SAID ACID-FORMING CONSTITUENTS, THUS REMOVING SAID REMAING ACID-FORMING CONSTITUENTS FROM SAID GAS AND OBTAINING A DEACIDIFIED GAS; PASSING SAID AMMONIUM SALT OF SAID ACID-FORMING CONSTITUENTS FORMED IN SAID SECOND STAGE OF THE GAS WASHER TO SAID FIRST STAGE OF THE GAS WASHER FOR REACTION WHEREIN WITH ADDITIONAL GASEOUS ACID-FORMING CONSTITUENTS TO FORM THE CORRESPONDING AMMONIUM ACID SALT THEREOF; WITHDRAWING AT LEAST A PORTION OF SAID AMMONIUM ACID SALT IN THE AQUEOUS SOLUTION FROM SAID FIRST STAGE OF THE GAS WASHER; REGENERATING SAID AMMONIUM ACID SALT TO AMMONIUM HYDROXIDE AND SAID GASEOUS ACID FORMING CONSTITUENTS; AND RECIRCULATING THE THUS REGENERATED AMMONIUM HYDROXIDE TO SAID SECOND STAGE OF THE GAS WASHER.

Claim 2

A METHOD OF REMOVING ACID CONSTITUENTS SELECTED FROM THE GROUP CONSISTING OF CARBON DIOXIDE AND HYDROGEN SULFIDE FROM A GAS CONTAINING THE SAME DURING PASSAGE THEREOF THROUGH A GAS WASHER, COMPRISING THE STEPS OF PASSING A GAS CONTAINING GASEOUS ACID-FORMING CONSTITUENTS SELECTED FROM THE GROUP CONSISTING OF CARBON DIOXIDE AND HYDROGEN SULFIDE THROUGH A FIRST STAGE OF THE GAS WASHER IN WHICH AN AQUEOUS SOLUTION OF AN AMMONIUM SALT ADAPTED TO REACT OF THE PRESENCE OIF WATER WITH SAID GASEOUS ACID-FORMING CONSTITUENTS TO FROM THE CORRESPONDING ACID SALT THEREOF IS CONSTINUOUSLY PASSED IN COUNTERCURRENT AND RECIRCULATED THROUGH THE PASSING GAS SO AS TO REMOVE A PORTION OF SAID GASEOUS ACID-FORMING CONSTITUENTS FROM SAID GAS AND FROM THE CORRESPONDING AMMONIUM ACID SALT THEREOF; PASSING SAID GAS CONTAINING REMAINING GASEOUS ACID-FORMING CONSTITUENTS THROUGH A SUBSEQUENT SECOND STAGE OF THE GAS WASHER IN WHICH AN AQUEROUS AMMONIUM CURRENT AND RECIRCULATED THROUGH THE PASSING GAS AT A RATE CURRENT AND RECIRCULATED THROUGH THE PASSING GAS AT A RATE ADAPTED TO REMOVE SAID REMAINING GASEOUS ACID-FOARMING CONSTITUENTS FROM SAID GAS WHILE SAID GAS PASSES THROUGH SAID SECOND STAGE OF THE GAS WASHERS SO AS TO FROM THE CORRESPONDING AMMONIUM SALT OF SAID ACID-FORMING CONSTITUENTS, THUS REMOVING SAID REMAING ACID-FORMING CONSTITUENTS FROM SAID GAS AND OBTAINING A DEACIDIFIED GAS; PASSING SAID AMMONIUM SALT OF SAID ACID-FORMING CONSTITUENTS FORMED IN SAID SECOND STAGE OF THE GAS WASHER TO SAID FIRST STAGE OF THE GAS WASHER FOR REACTION WHEREIN WITH ADDITIONAL GASEOUS ACID-FORMING CONSTITUENTS TO FORM THE CORRESPONDING AMMONIUM ACID SALT THEREOF; WITHDRAWING AT LEAST A PORTION OF SAID AMMONIUM ACID SALT IN THE AQUEOUS SOLUTION FROM SAID FIRST STAGE OF THE GAS WASHER; REGENERATING SAID AMMONIUM ACID SALT TO AMMONIUM HYDROXIDE AND SAID GASEOUS ACID FORMING CONSTITUENTS; AND RECIRCULATING THE THUS REGENERATED AMMONIUM HYDROXIDE TO SAID SECOND STAGE OF THE GAS WASHER.