Process and apparatus for integration of a high-pressure hydroconversion process and a medium-pressure middle distillate hydrotreatment process, whereby the two processes are independent
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United States of America Patent
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Apr 14, 2015
Grant Date -
Jun 16, 2011
app pub date -
Dec 10, 2009
filing date -
Dec 10, 2009
priority date (Note) -
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Abstract
The invention relates to the integration of a process for hydrotreatment of distillates (light and/or middle), that operates under a hydrogen partial pressure of 0.5 to 6.0 MPa, with a process for hydrotreatment/hydroconversion of middle and/or heavy distillates that operates at a hydrogen partial pressure that is at least 4.0 MPa higher than the hydrogen partial pressure of the process for hydrotreatment of distillates (light and/or middle). The integration resides in the use of the hydrogen-rich gas, obtained from the hydrotreatment/hydroconversion effluents, in the process for hydrotreatment of distillates (light and/or middle) and in the adjustment of the pressure level of this hydrogen-rich gas removed from the hydrotreatment/hydroconversion. This invention makes it possible to considerably reduce the net consumption of make-up hydrogen in the process for hydrotreatment of distillates (light and/or middle).
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