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US3848057A Expired / Lapsed US ⏱️ 0.0 years remaining

Method and composition for removing acidic contaminants from gases

Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1971-10-01
•
Granted: 1974-11-12
•
Expires: 1991-10-01
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Abstract

Abstract 1. A PROCESS FOR REMOVING ACID GASES FROM A GASEOUS MIXTURE, SAID ACID GASES BEING SELECTED FROM THE GROUP CONSISTING OF CO2, H2S, HCN, CS2, COS, SO2 AND OXIDATION PRODUCTS AND SULFIDES OF METHANE, ETHANE, PROPANE AND BUTANE WHICH COMPRISES CONTACTING SAID MIXTURE WITH A SOLUTION, SAID SOLUTION COMPRISING 5 TO 40 WT. PERCENT OF AN ALKALI METAL SALT, SAID SALT SELECTED FROM THE GROUP CONSISTING OF POTASSIUM CARBONATE AND SODIUM CARBONATE AND A SYNERGISTIC PROMOTER SYSTEM COMPRISING AT LEAST ABOUT 7 WT. PERCENT OF AN AMINE BEING SELECTED FROM THE GROUP CONSISTING OF PIPERIDINE, DERIVATIVES OF PIPERIDINE, 1,6-HEXANEDIAMINE AND DERIVATIVES OF 1,6-HEXANEDIAMINE AND BORIC ACID, AND SAID BORIC ACID BEING PRESENT IN THE AMOUNT OF FROM 0.5 TO 5 MOLES OF BORIC ACID PER MOLE OF AMINE, AT TEMPERATURE OF 25 TO 200* C., AND A PRESSURE OF 5 TO 2,000 P.S.I.G. AND MAINTAINING SAID SOLUTION IN A SINGLE PHASE DURING SAID CONTACTING WHEREIN AT LEAST A PORTION OF SAID ACID GAS IS ABSORBED BY SAID SOLUTION.

Inventors

  • 👤 F Leder
  • 👤 D Savage
  • 👤 A Shrier

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 00:45
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14; B01D53/1493; B01D53/34; B01D53/46; B01D53/48; B01D53/52; B01D53/526; C; C01; C01B; C01B32/00; C01B32/50; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/12

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 167 words
A PROCESS FOR REMOVING ACID GASES FROM A GASEOUS MIXTURE, SAID ACID GASES BEING SELECTED FROM THE GROUP CONSISTING OF CO2, H2S, HCN, CS2, COS, SO2 AND OXIDATION PRODUCTS AND SULFIDES OF METHANE, ETHANE, PROPANE AND BUTANE WHICH COMPRISES CONTACTING SAID MIXTURE WITH A SOLUTION, SAID SOLUTION COMPRISING 5 TO 40 WT. PERCENT OF AN ALKALI METAL SALT, SAID SALT SELECTED FROM THE GROUP CONSISTING OF POTASSIUM CARBONATE AND SODIUM CARBONATE AND A SYNERGISTIC PROMOTER SYSTEM COMPRISING AT LEAST ABOUT 7 WT. PERCENT OF AN AMINE BEING SELECTED FROM THE GROUP CONSISTING OF PIPERIDINE, DERIVATIVES OF PIPERIDINE, 1,6-HEXANEDIAMINE AND DERIVATIVES OF 1,6-HEXANEDIAMINE AND BORIC ACID, AND SAID BORIC ACID BEING PRESENT IN THE AMOUNT OF FROM 0.5 TO 5 MOLES OF BORIC ACID PER MOLE OF AMINE, AT TEMPERATURE OF 25 TO 200* C., AND A PRESSURE OF 5 TO 2,000 P.S.I.G. AND MAINTAINING SAID SOLUTION IN A SINGLE PHASE DURING SAID CONTACTING WHEREIN AT LEAST A PORTION OF SAID ACID GAS IS ABSORBED BY SAID SOLUTION.
Claim 2
Dependent Claim 167 words
A PROCESS FOR REMOVING ACID GASES FROM A GASEOUS MIXTURE, SAID ACID GASES BEING SELECTED FROM THE GROUP CONSISTING OF CO2, H2S, HCN, CS2, COS, SO2 AND OXIDATION PRODUCTS AND SULFIDES OF METHANE, ETHANE, PROPANE AND BUTANE WHICH COMPRISES CONTACTING SAID MIXTURE WITH A SOLUTION, SAID SOLUTION COMPRISING 5 TO 40 WT. PERCENT OF AN ALKALI METAL SALT, SAID SALT SELECTED FROM THE GROUP CONSISTING OF POTASSIUM CARBONATE AND SODIUM CARBONATE AND A SYNERGISTIC PROMOTER SYSTEM COMPRISING AT LEAST ABOUT 7 WT. PERCENT OF AN AMINE BEING SELECTED FROM THE GROUP CONSISTING OF PIPERIDINE, DERIVATIVES OF PIPERIDINE, 1,6-HEXANEDIAMINE AND DERIVATIVES OF 1,6-HEXANEDIAMINE AND BORIC ACID, AND SAID BORIC ACID BEING PRESENT IN THE AMOUNT OF FROM 0.5 TO 5 MOLES OF BORIC ACID PER MOLE OF AMINE, AT TEMPERATURE OF 25 TO 200* C., AND A PRESSURE OF 5 TO 2,000 P.S.I.G. AND MAINTAINING SAID SOLUTION IN A SINGLE PHASE DURING SAID CONTACTING WHEREIN AT LEAST A PORTION OF SAID ACID GAS IS ABSORBED BY SAID SOLUTION.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-11-11 1978-05-13 1978-11-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-11-11 1982-05-13 1982-11-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-11-11 1986-05-13 1986-11-12 $7700.00 Window Closed / Lapsed

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