| 摘要 |
<p>A process for hydroprocessing liquid petroleum and chemical streams in two or more hydroprocessing stages (110a, 110b, 110c), which stages (110a, 110b, 110c) are in separate reaction vessels (100a, 100b, 100c) and wherein each reaction stage (110a, 110b, 110c) contains a bed of hydroprocessing catalyst. The liquid product from the first stage (110a) is sent to a stripping stage (160a) and stripped of H2S, NH3 and other dissolved gases. The stripped product stream is then sent to the next downstream reaction stage (110b), the product from which is also stripped of dissolved gases and sent to the next downstream reaction stage (110c) until the last reaction stage (110c), the liquid product of which is stripped of dissolved gases and collected or passed on for further processing. The flow of treat gas is in a direction opposite in which the reaction stages (110a, 110b, 110c) are staged for the liquid flow. Each stripping stage (160a, 160b, 160c) is a separate stage, but all stages (160a, 160b, 160c) are contained in the same stripper vessel (200).</p> |
