Titanium Venturi

The Titanium Acid Regeneration System is designed for hydrochloric acid regeneration processes in steel pickling plants. The system utilizes waste heat from the roasting furnace exhaust gas to concentrate spent hydrochloric acid and recover valuable acid resources while producing iron oxide (Fe₂O₃) by-products.

The complete system consists of:

• Titanium Venturi Pre-Concentrator

• Titanium Spray Lance Assembly

• Titanium Dust Collector / Separator

• Acid Recovery & Gas Treatment Components

Manufactured primarily from Titanium-Palladium Alloy Grade 7 (Ti-Pd Gr7), the system offers exceptional corrosion resistance, high-temperature stability, and long service life under highly aggressive hydrochloric acid environments.

Process Flow

1. Waste Acid Pre-Concentration

Spent acid from the steel pickling line enters the Titanium Venturi Pre-Concentrator.

Using direct contact heat exchange with high-temperature furnace exhaust gas, water is evaporated from the waste acid, increasing acid concentration before entering the roasting furnace.

2. Acid Injection

The concentrated acid is delivered through the Titanium Spray Lance and atomized into the roasting furnace.

Fine droplet atomization maximizes heat transfer efficiency and promotes complete thermal decomposition.

3. Thermal Regeneration

Inside the roasting furnace:

FeCl₂ and FeCl₃ are thermally decomposed into:

• Hydrochloric Acid (HCl)

• Iron Oxide (Fe₂O₃)

Recovered acid is recycled back to the pickling process.

4. Dust Separation & Gas Cleaning

The Titanium Dust Collector separates iron oxide particles from the process gas stream.

The integrated scrubbing section removes:

• HCl mist

• Fe₂O₃ particles

• Acid aerosols

ensuring compliance with environmental emission requirements.

System Components

Titanium Venturi Pre-Concentrator

Function

The Venturi acts as a waste acid concentrator using the sensible heat of roasting furnace exhaust gases.

Technical Specifications

Typical Waste Acid Composition

Features

• Direct heat recovery

• Efficient acid concentration

• Compact structure

• Stable operation

• Easy maintenance

• Long service life

Titanium Spray Lance Assembly

Function

The spray lance atomizes concentrated waste acid into the roasting furnace for thermal decomposition.

Technical Specifications

Materials

Advantages

• Uniform atomization

• Excellent wear resistance

• Corrosion-resistant construction

• High operational reliability

Titanium Dust Collector / Separator

Function

The dust collector separates iron oxide particles generated during acid regeneration and returns them to the process.

The unit also functions as a wet scrubber for removing residual HCl and Fe₂O₃ from exhaust gases.

Technical Specifications

Functions

• Iron oxide recovery

• Flue gas cleaning

• Acid mist removal

• Emission control

Why Choose Titanium Grade 7?

Titanium Grade 7 contains palladium, significantly enhancing corrosion resistance in reducing acid environments.

Advantages

Exceptional Corrosion Resistance

Excellent resistance to:

• Hydrochloric Acid (HCl)

• Sulfuric Acid (H₂SO₄)

• Phosphoric Acid (H₃PO₄)

• Chloride-containing media

High Temperature Resistance

Suitable for continuous operation under elevated temperatures.

Long Service Life

Reduced maintenance and replacement costs.

Lightweight Construction

Compared with nickel alloys and stainless steels, titanium provides excellent strength-to-weight performance.

Benefits of the Titanium Acid Regeneration System

Acid Recovery

Reduces hydrochloric acid consumption through recycling.

Energy Efficiency

Recovers waste heat from furnace exhaust gases.

Iron Oxide Recovery

Produces valuable Fe₂O₃ by-products.

Environmental Compliance

Reduces emissions and wastewater discharge.

Lower Operating Costs

Minimizes chemical consumption and waste disposal costs.

Long-Term Reliability

Titanium construction ensures stable operation in highly corrosive environments.

Typical Industries

Steel Pickling Plants

• Carbon steel pickling lines

• Cold rolling mills

• Hot-dip galvanizing facilities

Acid Regeneration Plants

• Hydrochloric acid regeneration

• Waste acid recycling systems

Metallurgical Industry

• Steel processing

• Metal surface treatment

Available Customization

We provide customized acid regeneration equipment according to process requirements.

Available options include:

• Titanium Venturi size customization

• Spray lance configuration

• Dust collector capacity

• Titanium Grade 7 or Niobium construction

• Integrated acid recovery systems

• Turnkey acid regeneration solutions