Naphtha reforming process
    3.
    发明授权
    Naphtha reforming process 失效
    石脑油重整过程

    公开(公告)号:US4460457A

    公开(公告)日:1984-07-17

    申请号:US178658

    申请日:1980-08-18

    IPC分类号: C10G35/09 C10G35/06

    CPC分类号: C10G35/09

    摘要: In a process for reforming light naphtha with a bimetallic or multimetallic reforming catalyst, such as a platinum-rhenium-halogen catalyst, at conventional reforming conditions, wherein the catalyst is used for an extended continuous on-stream period, the aromatics selectivity of the catalyst is rapidly increased by contacting the naphtha and hydrogen with the catalyst at increased severity operating conditions, such as a reduced pressure less than 90% of the normal reforming pressure, during an initial portion of the on-stream period.

    摘要翻译: 在通过双金属或多金属重整催化剂如铂 - 铼 - 卤素催化剂重整轻石脑油的方法中,在常规重整条件下,其中催化剂用于延长的连续原油期,催化剂的芳烃选择性 通过在增加的苛刻度操作条件(例如小于正常重整压力的90%的减压)下在接通时段的初始部分期间使石脑油和氢与催化剂接触而快速增加。

    Method of producing high aromatic yields through aromatics removal and
recycle of remaining material
    5.
    发明授权
    Method of producing high aromatic yields through aromatics removal and recycle of remaining material 失效
    通过芳烃去除和再循环剩余材料生产高芳族收率的方法

    公开(公告)号:US4648961A

    公开(公告)日:1987-03-10

    申请号:US641638

    申请日:1984-08-17

    CPC分类号: C10G35/095 B01J29/068

    摘要: A naphtha feed is contacted in a reaction vessel with a dehydrocyclization catalyst comprising a large-pore zeolite containing at least one Group VIII metal to produce an aromatics product and a gaseous stream, the aromatics product is separated from the gaseous stream and is passed through a molecular sieve which adsorbs paraffins present in the aromatics product, then the gaseous stream is used to strip the paraffins from the molecular sieve, and the gaseous stream and the paraffins are recycled to the reaction vessel.

    摘要翻译: 将石脑油进料在反应容器中与脱氢环化催化剂接触,所述脱氢环化催化剂包含含有至少一种Ⅷ族金属的大孔沸石以产生芳族化合物产物和气态物流,芳烃产物与气流分离并通过 分子筛,其吸附存在于芳族化合物产物中的链烷烃,然后使用气流从分子筛中剥离链烷烃,并将气态物流和链烷烃再循环到反应容器中。

    Sulfur removal systems for protection of reforming crystals
    8.
    发明授权
    Sulfur removal systems for protection of reforming crystals 失效
    用于保护重整晶体的除硫系统

    公开(公告)号:US5439583A

    公开(公告)日:1995-08-08

    申请号:US243

    申请日:1993-01-04

    IPC分类号: C10G59/02 C10G69/08 C10G35/06

    CPC分类号: C10G59/02 C10G69/08

    摘要: A process is disclosed for removing residual sulfur from a hydrotreated naphtha feedstock. The feedstock is contacted with molecular hydrogen under reforming conditions in the presence of a less sulfur sensitive reforming catalyst to convert trace sulfur compounds to H.sub.2 S, and to form a first effluent. The first effluent is contacted with a solid sulfur sorbent to remove the H.sub.2 S and form a second effluent. The second effluent is then contacted with a highly selective reforming catalyst under severe reforming conditions. Also disclosed is a method using a potassium containing sulfur sorbent made from nitrogen-free potassium compounds.

    摘要翻译: 公开了从加氢处理的石脑油原料中除去残余硫的方法。 在重硫条件下,在较少硫敏感的重整催化剂的存在下,原料与分子氢接触,以将痕量硫化合物转化为H 2 S,并形成第一流出物。 将第一流出物与固体硫吸附剂接触以除去H 2 S并形成第二流出物。 然后在严格的重整条件下将第二流出物与高度选择性的重整催化剂接触。 还公开了使用由无氮钾化合物制成的含钾硫吸附剂的方法。

    Sulfur removal system for protection of reforming catalysts
    9.
    发明授权
    Sulfur removal system for protection of reforming catalysts 失效
    用于保护重整催化剂的脱硫系统

    公开(公告)号:US5259946A

    公开(公告)日:1993-11-09

    申请号:US953192

    申请日:1992-09-29

    IPC分类号: C10G59/02 C10G69/08 C10G35/06

    CPC分类号: C10G59/02 C10G69/08

    摘要: A process for removing residual sulfur from a hydrotreated naphtha feedstock is disclosed. The feedstock is contacted with molecular hydrogen under reforming conditions in the presence of a less sulfur sensitive reforming catalyst, thereby converting trace sulfur compounds to H.sub.2 S, and forming a first effluent. The first effluent is contacted with a solid sulfur sorbent, removing the H.sub.2 S and forming a second effluent. The second effluent is contacted with a highly selective reforming catalyst under severe reforming conditions.

    摘要翻译: 公开了从加氢处理的石脑油原料中除去残余硫的方法。 在重硫条件下,在较少硫敏感的重整催化剂的存在下,原料与分子氢接触,从而将痕量硫化合物转化为H 2 S,并形成第一流出物。 将第一流出物与固体硫吸附剂接触,除去H 2 S并形成第二流出物。 在严格的重整条件下,将第二流出物与高度选择性的重整催化剂接触。

    Process for the removal of thiols from hydrocarbon oils
    10.
    发明授权
    Process for the removal of thiols from hydrocarbon oils 失效
    从烃油中除去硫醇的方法

    公开(公告)号:US4204947A

    公开(公告)日:1980-05-27

    申请号:US915022

    申请日:1978-06-12

    CPC分类号: C10G25/003

    摘要: Thiol impurities are absorbed and removed from hydrocarbon oils by contacting the oil in the absence of molecular oxygen with a scavenger at a temperature in the range of about 120.degree. to 400.degree. C. The scavenger is a composite having a copper component and an inorganic porous carrier component and having a surface area in the range 20 to 1000 square meters per gram. The contacting must be discontinued when the thiol impurity content of the effluent product exceeds about 0.3 ppm.

    摘要翻译: 通过在不存在分子氧的情况下将油与清除剂在约120-400℃的温度下接触,从烃油中吸收和除去硫醇杂质。清除剂是具有铜组分和无机多孔 载体组分,其表面积为每克20至1000平方米。 当流出物的硫醇杂质含量超过0.3ppm时,必须停止接触。