TW329420B - Process for the production of anhydrous hydrochloric acid - Google Patents
Process for the production of anhydrous hydrochloric acidInfo
- Publication number
- TW329420B TW329420B TW084111104A TW84111104A TW329420B TW 329420 B TW329420 B TW 329420B TW 084111104 A TW084111104 A TW 084111104A TW 84111104 A TW84111104 A TW 84111104A TW 329420 B TW329420 B TW 329420B
- Authority
- TW
- Taiwan
- Prior art keywords
- hydrochloric acid
- distillation tower
- pressure
- production
- fraction
- Prior art date
Links
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
A process for the production of anhydrous hydrochloric acid, which is characterized in a distillation apparatus consisting of two-based distillation towers, the process comprising the steps of: (1) distilling, in a first distillation tower, a hydrochloric acid feed at a pressure not lower than the atmospheric pressure but not higher than 2 kg/cm2.G to form a first dilute hydrochloric acid having an azeotropic composition as a first bottom fraction and a concentrated hydrochloric acid having a hydrochloric acid concentration of between 30 and 42 % by weight as a first top fraction, the hydrochloric acid feed having a HCl concentration higher than the azeotropic composition at the first pressure , (2) distilling, in a second distillation tower, at a second pressure higher than 2 kg/cm2.G and at a temperature not higher than 160℃ the concentrated hydrochloric acid top fraction obtained in step (1) to form anhydrous hydrochloric acid as a second top fraction and a second dilute hydrochloric acid having a hydrochloric acid concentration higher than the first dilute hydrochloric acid and less than 35 % by weight as a second bottom fraction, and (3) recycling the hydrochloric acid obtained from the bottom of the second distillation tower to the first distillation tower.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW084111104A TW329420B (en) | 1995-10-20 | 1995-10-20 | Process for the production of anhydrous hydrochloric acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW084111104A TW329420B (en) | 1995-10-20 | 1995-10-20 | Process for the production of anhydrous hydrochloric acid |
Publications (1)
Publication Number | Publication Date |
---|---|
TW329420B true TW329420B (en) | 1998-04-11 |
Family
ID=58262507
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW084111104A TW329420B (en) | 1995-10-20 | 1995-10-20 | Process for the production of anhydrous hydrochloric acid |
Country Status (1)
Country | Link |
---|---|
TW (1) | TW329420B (en) |
-
1995
- 1995-10-20 TW TW084111104A patent/TW329420B/en not_active IP Right Cessation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |