De Sox System
These systems are designed to extract Sulphur Oxides from the Exhaust Gas. Our Partners in China have long-standing expertise in providing solutions to use these oxides and covert them into forms that the industry can use as raw material.
A De-SOx system extracts sulphur oxides from exhaust gas. Sulphur oxides are generated wherever sulphur bearing fuel or feed material is processed at temperature, and they are among the pollutants most commonly checked during stack monitoring at steel, foundry and metal processing plants.
Why sulphur oxides are controlled
SOx contributes to acid deposition and to particulate formation downwind, which is why it appears in consent conditions with a defined limit. For an operator the issue is practical rather than theoretical: an exceedance found during monitoring has to be corrected, usually on a timeline set by someone else.
Recovering value from the sulphur
Our partners have long standing expertise in converting sulphur oxides into forms that can be returned to industry as raw material rather than treated purely as waste. Where gas volume and concentration support it, that recovery offsets part of the running cost and changes the system from pure compliance spending into something with a return attached. Whether it applies to your plant depends on the numbers, so it is evaluated during design.
What we need to size a system
- Exhaust gas volume and temperature
- Inlet sulphur oxide concentration from stack measurement
- The outlet limit you are required to meet
- Whether operation is continuous or batch, since batch peaks are what a system sized on averages will fail to handle
- Available space around the existing exhaust route
Combining De-SOx and De-NOx
Where both sulphur and nitrogen oxides need treating, designing them as a single exhaust train is the sensible approach. The gas passes through the stages in the correct sequence, the fan duty is calculated once for the whole train, and the ducting and space planning are done together rather than twice.
Retrofitting an existing plant
In most cases a De-SOx system can be added to an existing installation. Practicality depends on the space around the exhaust route and whether the existing ducting and fan can carry the additional pressure drop, which is usually the limiting factor rather than the treatment stage itself.
Where to start
Take a current stack emission measurement first. It identifies which pollutants are actually out of range and at what margin, which stops you investing in capability you do not need and gives you a baseline to verify the installed system against.
It extracts sulphur oxides from exhaust gas. These are generated wherever sulphur bearing fuel or feed material is burnt, and they are one of the pollutants most commonly checked during stack monitoring.
Yes. Our partners have long standing expertise in converting sulphur oxides into forms that can be returned to industry as raw material rather than being treated purely as waste.
Yes, and where both are required it is usually the sensible approach. The stages are laid out as a single exhaust train so the gas passes through them in the right sequence.
Gas volume, temperature, sulphur oxide concentration and your target outlet limit, plus the available space around the existing stack. With those we can size the system properly rather than working from assumptions.
In most cases yes, though the practicality depends on the space around the exhaust route and whether the existing ducting can carry the additional pressure drop.
