← Back to Patent Explorer
US3616611A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for the continuous recovery of acids from inert organic media

Assignee: Buss AG
•
Filing: 1968-12-13
•
Granted: 1971-11-02
•
Expires: 1988-12-13
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract APPARATUS FOR THE CONTINUOUS RECOVERY OF PURE ACIDS AND WATER-ACID MIXTURES, WHICH ARE PRESENT IN CONTAMINATED INERT ORGANIC MEDIA SUCH AS ABSORBER SOLUTIONS, COMPRISING: (A) HEATING MEANS TO HEAT SAID ABSORBER SOLUTIONS; (B) DESORPTION MEANS INCLUDING A FALLING-FILM EVAPORATOR OPERATING UNDER VACUUM TO SEPARATE A DESORBED ACID-WATER MIXTURE WHICH HAS MUCH HIGHER HF STRENGTH THAN THE AZEOTROPE; (C) MEANS FOR WITHDRAWING THE DESORBED WATER-ACID MIXTURE IN THE VAPOR PHASE FROM SAID FALLING-FILM EVAPORATOR; (D) CONDENSING MEANS TO LIQUEFY SAID DESORBED WATERACID MIXTURE, AND (E) PUMPING MEANS AND RECYCLING MEANS TO TRANSPORT THE ABSORBENT FROM THE EVAPORATOR TO AN ABSORPTION TOWER FOR RE-USE.

Inventors

  • 👤 Renato Gentili

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 18:49
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/06; B01D1/10; B01D1/065; C; C01; C01B; C01B7/00; C01B7/19; C01B7/191

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

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) 1974-11-01 1975-05-03 1975-11-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-11-01 1979-05-03 1979-11-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-11-01 1983-05-03 1983-11-02 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag