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As the global authority in thermal oxidizer solutions, Zeeco is the company to trust for Downfired Salt Thermal Oxidation Systems. Our engineers have decades of experience in designing these systems for petrochemical plants around the globe, helping our clients destroy salt based wastes efficiently and effectively. Zeeco’s experienced engineering groups exceed client expectations with every Down fired Salt system designed.

Smarter design, better results.

We know salt can be a caustic foe. That’s why Zeeco’s engineers developed smart, preemptive measures to minimize salt attack and maximize system life. Our proprietary systems incorporate low-porosity refractory materials, minimize molten salt contact with refractory walls, and “freeze” molten salts prior to contact with downstream equipment.The result? A system that performs better and lasts significantly longer.

Downfired Salt Thermal Oxidizer

The same commitment to excellence applies to our product development process. Our Combustion Research and Test Facility was the first in the world to become ISO 9001-2000 certified, and our staff stays ahead of rapidly changing emission requirements. With 15 full-scale test furnaces, Zeeco is capable of testing a wide variety of combustion systems under simulated field conditions. A multi-stream incineration system allows us to test the most complex situations in a controlled environment.

In addition to combustion testing, we also use advanced ComputationalFluid Dynamics (CFD) to model specific process conditions against the actual equipment design, allowing us to accurately predict how our equipment will perform in real-world situations.

Product Description

Down fired Salt Thermal Oxidizers are incineration systems that typically treat wastes containing inorganic salts (NaCL,K2SO4, Li2S, etc.), organic salts (acetates and oxalates of alkali metals), caustic liquids, and non-combustible solid materials. They are called “down fired” because of the vertically-oriented burners located at the top of the incinerator that fire downward. Zeeco’s proprietary design promotes longer refractory life and easy removal of the non-combustible solids and particulates typically contained in the waste streams.

Typical Performance

  • Residence time = 2.0 seconds
  • Operating temperature = 1650 - 2000°F (900 - 1200°C)
  • Waste Destruction Efficiency (DRE) > 99.99%
  • Particulate emissions rates = 0.005 - 0.08 grains/DSCF

Typical Applications

  • Spent caustic waste streams
  • Organic/Inorganic salt solutions
  • Wood products waste streams
  • Biomass-to-Energy processes
  • Catalyst applications

Design Features

  • Refractory materials selected for low porosity to minimize salt attack
  • Proprietary design minimizes molten salt contact with refractory walls to promote maximum refractory life
  • Proprietary design “freezes” molten salts prior to contact with downstream heat recovery/particulate removal equipment
  • Particulate removal equipment may include baghouses, multi-clone filters, electrostatic precipitators, or venturi scrubbers
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