Hydrogen chloride supply system, air pollution control...

C - Chemistry – Metallurgy – 01 – B

Patent

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Details

C01B 7/01 (2006.01) B01D 53/50 (2006.01) B01D 53/56 (2006.01) B01D 53/64 (2006.01)

Patent

CA 2711277

An air pollution control system comprises: a carry-in tank truck (22A) that carries in a feedstock, i.e., concentrated hydrochloric acid (35% hydrochloric acid); a hydrogen chloride vaporizer (24) that vaporizes the concentrated hydrochloric acid to obtain hydrogen chloride (23); a liquid level regulator (27) that separates residual hydrogen chloride (26) from extracted dilute hydrochloric acid (25A) discharged as a by-product from the hydrogen chloride vaporizer (24), and that regulates the liquid level of the hydrogen chloride vaporizer (24); a concentration regulating tank (28) that regulates the hydrochloric acid concentration of extracted dilute hydrochloric acid (25B) from which the residual hydrogen chloride (26) has been separated to a predetermined concentration (e.g., 22%); a by-product tank (30) that stores therein dilute hydrochloric acid (29) regulated to have a predetermined concentration; and a carry-out tank truck (22B) that carries out the dilute hydrochloric acid (29) with a predetermined concentration discharged from the by-product tank (30).

L'invention concerne un système de traitement de gaz d'échappement comprenant un camion-citerne (22A) d'amenée qui apporte de l'acide chlorhydrique concentré (acide chlorhydrique à 35%) (21) comme matière première, un vaporiseur (24) d'acide chlorhydrique qui vaporise l'acide chlorhydrique concentré pour donner du chlorure d'hydrogène (23), un régulateur (27) de niveau de liquide qui sépare le chlorure d'hydrogène résiduel (26) de l'acide chlorhydrique dilué récupéré (25A) en tant que sous-produit amené depuis le vaporiseur (24) d'acide chlorhydrique et régule le niveau de liquide du vaporiseur (24) d'acide chlorhydrique, un réservoir (28) de régulation de la concentration qui régule la concentration d'acide chlorhydrique dans l'acide chlorhydrique dilué récupéré (25B), duquel le chlorure d'hydrogène résiduel (26) a été séparé, à une concentration prédéterminée (par exemple 22%), un réservoir (30) à sous-produit qui emmagasine de l'acide chlorhydrique dilué (29) dont la concentration d'acide chlorhydrique a été régulée à la concentration prédéterminée, et un camion-citerne (22B) d'évacuation qui évacue l'acide chlorhydrique dilué (29) à la concentration prédéterminée amené depuis le réservoir (30) à sous-produit.

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