氢气分级利用技术.pdfVIP

SINOPEC8 Hydrogen Cascade Use Technology July 2010 1 1. : Introduction : Luoyang Petrochemical Engineering Co/SinopecLPEC LPEC has plentiful engineering experience in hydrogenation units and hydrogen networks in refinery Hydrogen cascade utilization Hydrogen network optimization Software 2 2. - I Hydrogen cascade utilization I 1 4.0 20.0MPa 2.0 3.0MPa 2 Content: 1 Flash gas of high pressure hydro-treating unit (operating pressure 4.0 ~ 20.0MPa) use as fresh H2 of low pressure hydro-treating unit (operating pressure 2.0 ~ 3.0MPa). 2 Once through flow be used in low pressure hydro- treating unit . 3 - I Hydrogen cascade utilization I 1 2 3 H2S 4 Benefits 1 Lower investment and operating costs due to the hydrogen compressor abolished 2Reduce energy consumption by full use of the flash gas pressure 3Reduce H2S accumulation in the reactor by hydrogen once through flow 4Greater operational flexibility. 4 3. - II Hydrogen cascade utilization II 10.0 20.0MPa SRH Content: Part of the recycle H2 of high pressure hydro-treating unit (operating pressure 10.0 ~ 20.0MPa) use as fresh H2 of a liquid-solid two-phase hydro-treating (SRH) to take advantage use of hydrogen purity and pressure of this part of recycle H2 .