Where does the carbon monoxide and hydrogen sulfide in the coal tar tank come from?
Thread Content
Work involving open flames is required around the tar tank, and a four-in-one detector is used at the breathing valve; the readings show 15 mg/m3 of hydrogen sulfide, 300 ppm of carbon monoxide, an LEL of 10%, and 19.5% oxygen. Where does the carbon monoxide and hydrogen sulfide come from?
Is it possible that it’s dissolved in coal tar? Tar is originally separated from coke oven gas, so its melting point is normal. When the partial pressure of gases in the external environment is low, according to the law of partial pressures, gases will be released.