Valued acid regeneration plant 4m3/h (energy electricity) with perfect quality
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After hydrochloric-acid pickling hot rolled steel plate can be cold-rolled. When hot rolled steel plates are acid pickling in hydrochloric solution, iron and ferric oxide on surface of hot-rolled steel plate shall be washed away by hydrochloric acid. And then hydrochloric acid shall transform into chloride majored by FeCL2 and dissolve into hydrochloric acid solution. Along with acid pickling proceeding, iron ion density in hydrochloric acid solution will go up, while dissociated HCL density will go down. In order to maintain the density of free HCL in the acid solution, remove the iron ion increased, the waste acid pickling solution will be sent to acid regeneration device to regenerate free acid which shall be returned into acid pickling unit for waste acid reutilization. At the same time, ferric oxide is obtained.
The acid pickling process is expressed as the following chemical reaction equations.
| No. | Equipment description | Qty | Material | Remarks |
| 1 | Calcinator | 1 | Q235-A | construct in the plant |
| 2 | Lifting device | 2 | | |
| 3 | Spraying gun | 2 | | Niobium part |
| 4 | Double cyclone separator | 1 | Q235-A | |
| 5 | Iron powder bin | 1 | Q335-A | construct in the plant |
| 6 | Industrial water tank | 1 | Q435-A | |
| 7 | Precondensator | 1 | steel lined rubber | Spraying pipeline making containing niobium |
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Spent Sulfuric Acid Regeneration Plant Process Images
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