What is the saturated vapor pressure of benzene at 37.8 degrees? Should a nitrogen seal be added?
Thread Content
This post was last edited by hnan on 2015-9-10 09:26. As mentioned by sh3007, when the saturated vapor pressure is 37.8 degrees and 88 kPa, a nitrogen seal is required; is this necessary for benzene?
This post was last edited by hnan on 2015-9-22 09:14. It is recommended that the original poster check the \"Handbook of Physical Properties of Chemicals and Materials\"; the saturated vapor pressure of benzene at 40°C is 24.37 kPa. Benzene is a highly hazardous substance; it must be sealed with nitrogen, and the waste gas should be collected and treated in a closed system.
What was said upstairs has no basis; which specific standard and which clause stipulates it?
Benzene is an extremely hazardous substance that poses serious risks to human health; therefore, nitrogen blanketing is required
Benzene is a **chemical, classified as Category A; what regulations define this extremely hazardous substance you’re talking about?
What was said upstairs is correct: benzene not only needs to be sealed with nitrogen but also requires vapor recovery systems. This has nothing to do with vapor pressure; it’s related to the level of danger.
This post was last edited by qxyshw on 2015-9-22 09:03. In accordance with the notice issued by the Ministry of Environmental Protection regarding the release of the \"Comprehensive Plan for the Control of Volatile Organic Compounds in the Petrochemical Industry\" (Document No. Huan Fa 177), different regulations apply in various provinces and cities. Document No. Yue Huan [2014] 130 from Guangdong Province specifies that oil and vapor recovery systems must be installed in storage tanks for benzene, toluene, and xylene, on top of the existing floating roof design. Standards vary by region; you can consult the local environmental protection department.
If local **and environmental protection authorities explicitly require that oil and gas recovery facilities be installed in triphenyl storage tanks, I suggest that a nitrogen seal is not necessary for such tanks
If local **and environmental protection authorities explicitly require that oil and gas recovery facilities be installed in triphenyl storage tanks, I suggest that a nitrogen seal is not necessary for such tanks
Does 88 kPa at 37.8°C correspond to any specific substance? Why is this data used as the critical value?