I get an inquiry from the Philippines last week. The customer requires a roots blower to deliver Hydrogen Sulfide(H2S). The following are the requirements.
Medium is Noncondensable gases (NCG). And the composition is 95% CO2 and 5% H2S. However, The flowrate ranges from 830cfm ( minimum) to 3300 cfm while the Inlet pressure of NCG is at 0.3 PSIG. Required minimum outlet pressure is 4.4 PSIG.
After checking Google, I find the characteristic. Hydrogen sulfide is the chemical compound with the formula H2S. It is a colorless chalcogen hydride gas with the characteristic foul odor of rotten eggs. It is very poisonous, corrosive, and flammable. Hydrogen sulfide is often produced from the microbial breakdown of organic matter in the absence of oxygen gas, such as in swamps and sewers; this process is commonly known as anaerobic digestion which is done by sulfate-reducing microorganisms. Furthermore, H2S also occurs in volcanic gases, natural gas, and in some sources of well water. The human body produces small amounts of H2S and uses it as a signaling molecule.
According to the technical requirements and Hydrogen Sulfide(H2S) characteristic, here is our solution for the roots blower.
Firstly, As the medium contains 5%H2S, so the Roots Blower will use Stainless steel 2205 to avoid corrosion.
Secondly, In order to prevent the medium leakage, We choose Mechanical sealing.
Thirdly, According to the parameters, we select our ZQRSR250 model with a 110kw explosion-proof variable frequency motor.
Four, For the pressure, Inlet pressure 0.3 psig and outlet pressure 4.4 psig. Thus The pressure rise is 4.1psig. In this case,we choose The ZQRSR250 roots blower. Because its pressure can reach 5.26psig and this can meet the requirement.
Five, For the flowrate（air capacity）, it required a range from 830cfm to 3300 cfm. In this case,we will use a Variable Frequency Motor. When the motor working under 60HZ(Philippines Voltage frequency), its flowrate（air capacity）can reach 3372cfm.I need a smaller flowrate, to change the frequency to make it.
Six, An explosion-proof motor is selected because it can keep safe under the circumstance of leakage from the whole system.
By the way, our roots blowers can also deliver many kinds of medium. They include Biogas, Natural Gas, Coal Gas, Semi-water Gas, Methane(CH4), Butane(C4H10), Ammonia(NH3), Carbonic Oxide(CO), Carbon Dioxide(CO2), Nitrogen(N2), Sulfur Dioxide (SO2), Hydrogen Sulfide(H2S) and Hydrogen(H2). In one word, It has a wide range of applications.
If you are looking for such blowers, welcome to contact us. We are willing to supply a complete solution for you.