Hydrochloric acid pickling is a common practice in steel manufacturing industry. During the process, acid is consumed to dissolve surface oxides and metals are accumulated in the solution. This fact leads to a process efficiency decrease. Continuous regeneration of pickling solutions enhances process rate and performance, but also minimises the highly expensive and environmentally risky wastewater disposal. The recovery of valuable substances (e.g. acid and metals) can be accomplished by coupling diffusion dialysis (DD) and membrane distillation (MD) technologies. In the present work, a steady state process simulator for the integrated process has been developed. The aim is to analyze and predict performances of a small pilot-scale unit to be installed and operated within a hot-dip galvanizing plant. A parametric analysis of the model is performed varying the hydrochloric acid concentration. In this way, refilling with fresh acid, as done in the normal operations, is avoided and operations are carried out under the optimal working conditions.

Culcasi, A., Gueccia, R., Randazzo, S., Cipollina, A., Micale, G. (2018). Modeling and Design of Membrane Integrated Processes for HCl and Metals Recovery from Pickling Solutions. In 13th Conference on sustainable development of energy, water and environment systems.

Modeling and Design of Membrane Integrated Processes for HCl and Metals Recovery from Pickling Solutions

Culcasi, A.;Gueccia, R.;Randazzo, S.;Cipollina, A.;Micale, G.
2018-01-01

Abstract

Hydrochloric acid pickling is a common practice in steel manufacturing industry. During the process, acid is consumed to dissolve surface oxides and metals are accumulated in the solution. This fact leads to a process efficiency decrease. Continuous regeneration of pickling solutions enhances process rate and performance, but also minimises the highly expensive and environmentally risky wastewater disposal. The recovery of valuable substances (e.g. acid and metals) can be accomplished by coupling diffusion dialysis (DD) and membrane distillation (MD) technologies. In the present work, a steady state process simulator for the integrated process has been developed. The aim is to analyze and predict performances of a small pilot-scale unit to be installed and operated within a hot-dip galvanizing plant. A parametric analysis of the model is performed varying the hydrochloric acid concentration. In this way, refilling with fresh acid, as done in the normal operations, is avoided and operations are carried out under the optimal working conditions.
2018
Process simulator; process modelling; hydrochloric acid recovery; diffusion dialysis; membrane distillation; pickling process
Culcasi, A., Gueccia, R., Randazzo, S., Cipollina, A., Micale, G. (2018). Modeling and Design of Membrane Integrated Processes for HCl and Metals Recovery from Pickling Solutions. In 13th Conference on sustainable development of energy, water and environment systems.
File in questo prodotto:
File Dimensione Formato  
SDEWES2018_BoA-31-31.pdf

Solo gestori archvio

Descrizione: Indice
Dimensione 279.07 kB
Formato Adobe PDF
279.07 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
SDEWES2018_BoA-1-1.pdf

Solo gestori archvio

Descrizione: Copertina
Dimensione 374.39 kB
Formato Adobe PDF
374.39 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Abstract_randazzo.pdf

accesso aperto

Tipologia: Versione Editoriale
Dimensione 268.18 kB
Formato Adobe PDF
268.18 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/336405
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact