Problems with boiler denitrification
Thread Content
I’m a complete novice; please give me some advice. It’s a 15-ton boiler, with flue gas emissions of 38,000. Denitration is achieved using SNCR technology with urea as the reagent, and there are 2 nozzles, each with a flow rate of 37 L/H. Should 4-mm-thick stainless steel pipes be sufficient for this purpose? Is there a big difference in the use of 304 and 316? The flow rate calculated is 0.08 m/s – is that a bit low? Is there a range for solution flow rate? 2. Use a metering pump; the height difference between the pump and the spray gun should be around 3 meters. The liquid pressure required at the spray gun is between 0.2 and 0.5. A pump with a head of 30 meters should be sufficient, right? The total length of the pipeline is about 50 meters; one section of it is in an inverted U shape and runs along the roof. It is said that the flow rate is less than 200 L/H, so a pulsation damper isn’t necessary. Should it be fine for my setup? 4. Is it a problem not to install a safety valve on the pipeline? 5. Instead of using a dissolution tank and a storage tank, can we simply use a tank with a diameter of 1.2 meters and a height of 2 meters for pouring in the material, stirring it, heating it, dissolving it, and storing it? Is that feasible? Looking forward to an answer, thank you
There should be no problem. We specialize in the production of flue gas dust removal filters, available in a variety of specifications and can be customized.
The flow rate is relatively low, only two white barrels; the pipe diameter is a bit large. Try using 1-inch and 2-inch pipes to see what the calculation results are like.
I searched the entire market, but it was difficult to find 2-inch pipes and related accessories. The spray gun manufacturer claimed that it only depends on liquid pressure, without taking flow rate into account