摘要:
Diesel fuel is produced from a feedstock that is at least partially biocomponent in origin. A feedstock is treated in a reactor including one or more hydrotreating zones having a continuous gas phase. The liquid effluent from the hydrotreating zones is then hydroprocessed in a hydroprocessing zone having a continuous liquid phase, such as a hydroprocessing zone in the same reactor. The hydroprocessing zone can be operated under effective catalytic dewaxing conditions.
摘要:
Separated volumes can be created in a reactor using interior dividing wall or interior conduit structures. Feedstocks can be hydroprocessed in the separated volumes to allow multiple types of hydroprocessing conditions and/or feeds to be processed in a single reactor. The feedstocks can remain separate for the entire volume of the reactor, or the dividing barrier can end at some intermediate point in the reactor.
摘要:
Non-hydrotreated biocomponent feeds can be mixed with mineral feeds and processed under catalytic isomerization/dewaxing conditions. The catalytic isomerization/dewaxing conditions can be selected to advantageously also substantially deoxygenate the mixed feed. Diesel fuel products with improved cold flow properties can be produced.
摘要:
This invention provides processes for producing fuel, particularly transportation fuel, from biological material, e.g., lipid material. One aspect of the invention involves hydroprocessing a feedstock in a hydroprocessing zone that is maintained at conditions that promote the efficiency of converting the lipid-containing feedstock into transportation fuel. Such conditions include one or more of maintaining CO content of the hydroprocessing zone at a predetermined amount and recycling or providing a hydrogen-containing gas to the hydroprocessing zone that has been treated to remove CO.
摘要:
Feeds containing a hydrotreated biocomponent portion, and optionally a mineral portion, can be processed under catalytic conditions for isomerization and/or dewaxing. The sulfur content of the feed for dewaxing can be selected based on the hydrogenation metal used for the catalyst. Diesel fuel products with improved cold flow properties can be produced.
摘要:
This invention relates to the production of dewaxed and/or hydroisomerized fuel composition that includes a step of hydrotreating a feedstock containing the lipidic material. The fuel compositions are high quality fuel compositions in which the fuel can be ultimately tailored for a variety of end uses such as jet fuel or diesel fuel.
摘要:
Processes are provided for producing a diesel fuel product having a sulfur content of 15 wppm or less (e.g., 10 wppm or less) from feed sources that include a biocomponent feedstock. The biocomponent feedstock can be initially co-processed with a mineral feed in a fluidized bed stage, such as an ebullating bed processing stage. Ebullating bed processing can mitigate the impact of the biocomponent feed on other hydrotreatment aspects of a diesel boiling range feed. Challenged biocomponent feeds can be handled by introducing the biocomponent feed into the ebullating bed reactor in a manner that reduces the fouling impact of the feed.
摘要:
A biocomponent feedstock can be hydroprocessed using an FCC off-gas as a hydrogen source. A relatively low cost catalyst, such as a water gas shift catalyst and/or spent hydrotreating catalyst, can be used as a hydrogenation catalyst for the process. The hydroprocessing can allow for olefin saturation and/or deoxygenation of the biocomponent feed by using a relatively low value refinery stream.
摘要:
This invention relates to processes for the production of a fuel composition from a feedstock that comprises lipid material (e.g., bio-material) and mineral oil. The processes can be carried out without producing a significant mount of undesirable side reactions such as cracking, polymerization, and aromatization, which can be an undesirable consequence of large heats of reaction. As a result, the invention provides for the production of a product that is relatively high in quality, and catalyst used in the processes is not adversely affected to any significant extent.
摘要:
Processes are provided for producing a diesel fuel product having a sulfur content of 15 wppm or less (e.g., 10 wppm or less) from feed sources that include a biocomponent feedstock. The biocomponent feedstock can be initially co-processed with a mineral feed in a fluidized bed stage, such as an ebullating bed processing stage. Ebullating bed processing can mitigate the impact of the biocomponent feed on other hydrotreatment aspects of a diesel boiling range feed. Challenged biocomponent feeds can be handled by introducing the biocomponent feed into the ebullating bed reactor in a manner that reduces the fouling impact of the feed.