Emissions of sulfur smoke are high; how to address this?
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The plant has an annual capacity of 10,000 tons and consists of a sulfur production furnace, two-stage Claus reaction, exhaust gas hydrogenation absorption, and exhaust gas combustion. Originally, the design standard was set at 960 ppm for emissions; later, a flue gas washing system was added, which reduced sulfur compound emissions. However, dust emissions remained high, and severe salt deposition occurred, causing significant damage to the chimney. How can this problem be solved?
It’s probably caused by flue gas washing. What is the temperature at the flue gas outlet? Is the spray misty?
Adding an electric demister should work well
The temperature at the outlet of the scrubber is around 60 degrees, and it rises to around 140 degrees before entering the chimney
The flue gas temperature inside our extractor is around 260°C, while it’s around 30°C when it comes out
Isn’t that dust level high? How is the salt accumulation in the chimney?
Where can one tell if there is salt buildup in the chimney?
The flue gas detection sampling port – it’s visible once it’s opened
What is used for cleaning your scrubber tower? Is it hydrogen peroxide?
The design calls for demineralized water at room temperature, but the actual temperature is 40 degrees； I used stripped purified water before, but it clogged up quite quickly.
After washing, impurities in the flue gas form salts that adhere to and corrode the chimney. Purification, dehumidification, and defogging are required to achieve zero visible smoke emissions. Electrostatic demisting is not suitable.