Calculation method for vacuum creation using a steam ejector
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\"Steam Jet Calculator\" is used for refrigeration systems. Can I use the formulas in it to perform vacuum pumping with a steam jet? The working steam pressure is 0.5 MPa at 159 degrees; gases such as oxygen, CO, and CO2 are used as feedstocks – can the formula above be applied? If it can’t be used, could some expert help solve this?
http://bbs.hcbbs.com/viewthread.php?tid=32051 contains the \"SH/T 3118-2000 Design Specifications for Steam Jet Evacuators in Petrochemical Industries\"
You can ask the specialized manufacturers of injectors to carry out the calculations, as long as you provide complete and accurate production data.
\"SH/T 3118-2000 Design Specifications for Steam Jet Evacuators in the Petrochemical Industry\": I used the formula above to calculate the amount of steam required. I’m not sure if it’s correct. The working steam is at 0.5 MPa and 159 degrees; the gases drawn off are oxygen at 150 standard cubic meters, along with a mixture containing 300 standard cubic meters of gas composed of 10.5% hydrogen, 24.9% CH4, and 64.6% nitrogen. The pressure of these gases drawn off is 0.65 bar, at 200 degrees. The final pressure of the mixed gas is 1.156 bar; I calculated that 1000 kg of steam is required. I’m not sure if it’s correct. Please give some advice
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I agree with the views expressed by those above. When calculating steam ejectors, in addition to using standard and manual theoretical methods, it is also necessary to take into account the structural design of the ejector as well as its manufacturing precision. It is best to have professional manufacturers carry out these calculations, as this ensures greater reliability.
It can be used; it is necessary to perform equivalent calculations on the gas to be evacuated