LoTOx™ NOₓ Control
The BELCO® multi-pollutant control solution offers NOx, SOx and particulate emissions removal in a single upflow BELCO® scrubber with integrated LoTOx™ process. This wet scrubbing based NOx reduction technology provides greater than 95% NOx reduction without the limitations or process and mechanical problems common to most Selective Catalytic Reduction (SCR) systems. As a result, refiners can achieve NOx, SOx and particulates emission targets at a lower cost, with higher reliability, on less space and with greater flexibility than ever before. With extensive industry experience working on a wide range of different fuel types, we are familiar with the issues they present and can adapt the LoTOx™ NOx control technology to suit your needs and ensure your plant meets its clean air targets.
The LoTOx™ process is applied as part of a BELCO® wet scrubbing system, allowing for a truly integrated, multi-pollutant reduction solution. NOx compounds are oxidized at a low temperature using ozone and converted to soluble compounds that are easily removed from the flue gas by the same liquid-gas contact that removes particulate and SOx. This process is well suited to the demanding requirements of FCCU applications. The unique BELCO® spray tower design and specialized spray nozzles provide the right conditions for the effective use of the LoTOx™ process. A droplet-free zone and open tower design provide high reduction efficiency without the risk of plugging. The entire system is engineered to ensure trouble-free handling of process upsets, long operating campaigns, temperature excursions, boiler bypass and pollutant inlet loading fluctuations.
Long lasting experience
DuPont Clean technologies has provided over 60 LoTOx™ systems for refinery scrubbers. The process is well suited for meeting the demanding requirements of FCCU applications. BELCO® wet scrubbing systems can easily be configured to incorporate a LoTOx™ process. This advanced system has proven its reliability over many years of operation. DuPont offers the LoTOx™ process for refinery FCCU, fluid coker, fired heater and boiler applications under an exclusive worldwide license from Linde LLC.
The Benefits of the LoTOX™ NOₓ process with BELCO® Wet Scrubbing
- Very high reduction of NOx, SOx and particulates in a single vessel
- No bypass required
- Highly reliable continuous operation over multiple years
- No in-line constrictions or catalyst modules
- Open vessel design for trouble free operation
- No potential for plugging
- Automatic control of outlet NOx level through selection of target outlet value
- Unaffected by temperature variations (high or low)
- Constant NOx outlet level irrespective of NOx fluctuations at inlet
- No ammonia slip concerns
- Not subject to poisoning or sintering of catalyst surface due to temperature excursions
- No concerns regarding SO2 oxidation to SO3
- Proven reliability
- Over 60 references
Understand how the LoTOx™ process for NOx control works. LoTOx™ is a trademark of Linde LLC.