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Titanium Venturi

Titanium material is excellent in corrosion resistance, especially the Titanium-pladium Alloy Gr7, it is excellent corrosion resistance in the solution of HCl, H2SO4 and H3PO4.

In the acid regeneration process of steel mills, Titanium venturi serves as a pre concentrator, pump the waste acid from the pickling unit to the top of the titanium venturi for spraying.


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Titanium Venturi Details

Titanium material is excellent in corrosion resistance, especially the Titanium-pladium Alloy Gr7, it is excellent corrosion resistance in the solution of HCl, HSO₄ and HPO₄.


In the acid regeneration process of steel mills, Titanium venturi serves as a pre concentrator, pump the waste acid from the pickling unit to the top of the titanium venturi for spraying. It undergoes direct heat exchange with the furnace gas from the combustion furnace (395 ℃), evaporates some of the water in the waste acid, and the waste acid is concentrated. The concentrated waste acid is sent to the top of the roasting furnace through the feeding pump filter station of the roasting furnace and then enters the roasting furnace for spraying through the spray rod, filter screen, and nozzle, There are two burners on the roasting furnace body for heating, which evaporate, dry, crystallize, and decompose concentrated acid sprayed into the furnace.


The decomposed FeO solid particles fall into the lower cone of the roasting furnace in the form of powder, are discharged by a crusher and a rotary valve, and are transported to the iron powder silo by a pneumatic conveying system. Install an absorption tower on the upper part of the silo for spraying, so that all acid containing cleaning water is recycled and the exhaust gas meets the emission standards.



Venturi Preconcentrator Specifications

Number of devices1 set
Equipment functionUse the heat of the reaction gas of the roaster to heat the waste acid from the pickling line to increase the concentration of waste acid and reduce the dust content in the flue gas.
StructureOne-piece structure, using four nozzles to feed acid along the tangential direction around it.
AdvantagesSimple and reasonable structure, short manufacturing cycle, convenient installation, stable operation, and convenient long-term maintenance
Medium composition
Liquid phaseConcentrated waste acid (composition: HCl-50-170g/l, FeCl-350-410g/l, FeCl-30-70g/l, 95°C-100°C)
Gas phase

Combustion exhaust gas (including: HCL steam, water vapor, nitrogen, carbon dioxide, a small amount of oxygen);

Iron oxide powder. Import:  380°C-460°C, Export: 83°C-95°C

Main parameters and materials
Diameter700mm
Height610mm
HousingTitanium-pladium Alloy Gr7
Immersion tubeTitanium-pladium Alloy Gr7


 immersion tube and venturi



Spray Lance Nozzle Tube ∣ Nozzle Plate 

Equipment Quantity: 3 sets

Equipment function: It is used to spray the waste acid concentrated by the pre-concentrator

into the roaster.

The main parameters:

Nozzle tube Length -- about 3170mm

Nozzle tube diameter--ø33/ø52mm

Nozzle tube pressure-460-500 Kpa

Nozzle tube hose--DN25, L=2600mm

Nozzle plate diameter--ø152mm

Nozzle flow--3.5l/min (0.4Mpa)

Number of nozzles--11-13/Nozzle tube

Plug Quantity--2-3

Main material:

Nozzle tube--Titanium Palladium Alloy/Niobium

Nozzle tube hose--EPDM/stainless steel wire mesh/PTFE

Nozzle plate - titanium palladium alloy/niobium

Nozzle tube casing—Titanium Gr7

Filter holder--titanium palladium alloy/niobium


spray lance nozzle tube and nozzle plate



Venturi Scrubber Specifications

Type

Dust Collector/Separator

Number of devices

1 set

Separator Function

It is used to separate the FeO particles in the reaction gas of the

Roaster and send them back to the roaster. Imported flue gas velocity

15-20m/s, removal

Efficiency

-50%

Scrubber function

Used to wash the participating HCl and Fe₂O₃ in the flue gas.

Structural form

One-piece structure

Main Material

Titanium Gr7



Venturi Scrubber (Titanium Gr.7)


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