Regarding the issue of crude benzene slag discharge
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Hello everyone. I have a question for my colleagues. I work in gas purification; our crude benzene processing unit is involved in slag removal. I would like to know the specific standards for slag removal, so that we can control the consumption of washing oil. Thank you all
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15) Temperature of superheated steam entering the regenerator > 320°C 16) Top temperature of the regenerator > 170°C 17) Bottom temperature of the regenerator > 180°C 18) Fraction distillate from the regenerator residues before 300°C ≤ 40% 19) Pressure at the bottom of the benzene removal tower: (30–35) KPa 20) Pressure at the top of the regenerator ≤ 0.05 MPa 5) Oil feed should be stopped seven to eight hours before slag discharge; slag discharge is determined based on the changes that occur after steam purging, and the regenerator is cleaned using steam afterward. Due to environmental concerns, it was upgraded to a negative-pressure benzene removal system by the end of 2014; this system eliminates internal sludge, does not require steam, results in very low wastewater generation, and offers significant environmental benefits, although it has drawbacks in terms of production capacity.
Who designed the negative pressure benzene removal system for your facility? The output should increase after changing the negative pressure.
The slag discharge temperature is a bit high at 230 degrees Celsius; another issue is the frequency of slag discharge! Fuel consumption can definitely be reduced!
This depends on the indicators related to the circulating oil washing process obtained from the tests to determine how to remove the residues; the amount of residues to be removed is determined based on the benzene levels. Normally, 1 ton per shift is sufficient for removing the residues! The daily output of crude benzene is 45 tons