Marei crude oil directly produces asphalt
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When crude oil from Mari is used to produce asphalt directly, the softening point is 47, the penetration is 70.5, and the flash point is 280; why is the residual penetration ratio at (25°C)/% below 61?
Is the needle pressure low, or have the light components not been completely removed? Consider whether the temperature at the outlet of the vacuum furnace, as well as the temperatures in the third or fourth vaporization sections, along with the negative pressure, are high enough
Same question. Please, colleagues, clarify these doubts!