Waste Acid Regenerating Unit

AcidRegenerating Unit

Waste acid regenerating unit can be decomposited by wasteacid regeneration production line to obtain the regenerated hydrochloric acid andiron oxide powder with the same concentration as the original waste acidsolution not containing or containing a small amount of molysite. Regeneration acidafter concentration adjustment by complex acid could be used again by the acid picklingline.

Production Technology Introduction

Waste acid regenerating principle

4FeCL₂+4H₂O+O₂=2Fe₂O₃+8HCL

2FeCL₃+3H₂O=Fe₂O₃+6HCL

Process Flow:

Waste acid → waste acid storage tank → concentration → spray roasting →decomposition → HCL (gas) → iron powder (collecting) → furnace gas cooling → HCL absorption → regenerated acid → regenerated acid storage tank

Iron oxide powder is stored in the iron powder bin forpackaging storage by air conveying device; Offgas after absorption is emittedthough many times washing.

Performance of the Acid Regeneration Line

Capacity: 3m³/h, 4m³/h, 6m³/h,8m³/h. Capacity can be designed according to client requirement.

Major Parameters

Waste acid   Fe₂+≤140g/L  HCL 3-5%

Regenerating acid  Fe₂+ ≤5g/L  HCL 190-220g/L

Iron powder   Fe₂O₃≥99%  CL- ≤0.01%

Exhaust gas   Fe₂O₃≤10mg/Nm³  HCL ≤20mg/Nm³

Effluent   Fe₂+0-120g/L  HCL  0-20% (discontinuously discharge)

Efficiency  ≥99.5%

Energy consumption  <750Kcal/L

Energy electricity, water, compressed air

Characteristics of the Acid Regeneration Line

Our waste acid regenerating unit could connect with the acid pickling lineseamlessly as we have taken into consideration of plant planning productionline design to commissioning, production and maintenance together. By our AcidRegeneration Line, the resource configuration optimization is realized, theuser cost is reduced, the operation is simplified, the efficiency is improved, andthe stable and safe operation of the line is guaranteed.

With the society environmental protection consciousness is strengthened, nowadaysmore requirements are raised for waste acid treatment. Our company waste acidregenerating unit adopts the advanced spray roasting method (i.e.: Ruthnermethod), so that the hydrochloric acid recovery efficiency is higher, "TheThree Wastes" emissions are less. Not only the problem of environmentalprotection is solved, but also very good social benefits and economic benefitsare honored.