Noble metal reforming of naphtha
    1.
    发明授权
    Noble metal reforming of naphtha 失效
    石脑油的贵金属重整

    公开(公告)号:US4292167A

    公开(公告)日:1981-09-29

    申请号:US111743

    申请日:1980-01-14

    CPC classification number: C10G59/02 B01J29/40 B01J29/44 C10G35/095 B01J29/65

    Abstract: Conventional noble metal reforming to upgrade the octane number of petroleum naphtha is an endothermic reaction which is carried out in a series of reactors with intermediate furnace heating of the petroleum fraction being upgraded. This specification discloses a process and apparatus configuration to increase the octane number of the reformate at a minimum liquid yield loss by cooling the first reforming stage effluent and then contacting the cooled effluent with a ZSM-5 type zeolite catalyst prior to the first intermediate furnace heating.

    Abstract translation: 用于提高石脑油的辛烷值的常规贵金属重整是在一系列反应器中进行的吸热反应,其中中间炉加热石油馏分升级。 本说明书公开了一种方法和装置结构,其通过冷却第一重整级流出物,然后在第一中间炉加热之前使冷却的流出物与ZSM-5型沸石催化剂接触,以最小的液体产率损失来增加重整产物的辛烷值 。

    Ammonia manufacturing process
    2.
    发明授权
    Ammonia manufacturing process 失效
    氨制造工艺

    公开(公告)号:US4238468A

    公开(公告)日:1980-12-09

    申请号:US938187

    申请日:1978-08-30

    CPC classification number: C01B3/025

    Abstract: In an ammonia manufacturing operation a normally gaseous hydrocarbon or a vaporized naphtha is steam reformed and shift converted, in the presence of air to produce a relatively hot water vapor-containing gaseous stream containing nitrogen and hydrogen in substantially stoichiometric proportion for the production of ammonia along with carbon dioxide and with minor amounts of carbon monoxide. The hot gaseous mixture is then cooled to remove water vapor therefrom as water, and oxygen, usually in the form of air, is added to the resulting cooled gaseous mixture which is contacted with a catalyst for the selective oxidation of the carbon monoxide therein to carbon dioxide in the presence of hydrogen. The oxygen is provided in part by air diverted from the steam reforming and in part by supplemental air. The resulting gases, now having a substantially reduced carbon monoxide content, are then treated for the removal of carbon dioxide and optionally to methanation to convert residual carbon oxides therein to methane.The resulting treated gases are subjected to contact with a catalyst under high pressure and at an elevated temperature for the conversion of the nitrogen and hydrogen in the treated gases to ammonia.

    Abstract translation: 在氨制造操作中,在空气存在下,将正常气态的烃或蒸发的石脑油进行蒸汽重整和转化转化,以产生含有大量化学计量比例的氮和氢的相对热水蒸汽的气流,用于生产氨 与二氧化碳和少量的一氧化碳。 然后将热的气体混合物冷却以从水中除去水蒸汽,通常以空气的形式将氧气加入到与催化剂接触的所得冷却气体混合物中,以将其中的一氧化碳选择性氧化为碳 二氧化碳在氢存在下。 氧气部分地由蒸汽重整部分地由辅助空气转移的空气提供。 然后将所得到的气体现在具有显着降低的一氧化碳含量,以便除去二氧化碳,并任选地进行甲烷化以将其中的残余碳氧化物转化为甲烷。 所得处理气体在高压和高温下与催化剂接触,以将处理过的气体中的氮和氢转化为氨。

    Production of alkyl aromatic hydrocarbons
    3.
    发明授权
    Production of alkyl aromatic hydrocarbons 失效
    烷基芳烃的生产

    公开(公告)号:US3957621A

    公开(公告)日:1976-05-18

    申请号:US545645

    申请日:1975-01-30

    CPC classification number: C10G45/64 C10G47/16 C10G59/02

    Abstract: Alkyl aromatic hydrocarbons useful as chemical raw material, solvents and the like are provided in high purity by hydrocracking of a fraction rich in alkyl aromatics and lean in aliphatic hydrocarbons over a particular zeolite catalyst associated with a hydrogenation/dehydrogenation component. The charge stock is characterized by substantial absence of benzene and lighter hydrocarbons. The technique is particularly well suited to production of maximum xylenes from a fraction containing higher boiling and lower boiling alkyl aromatics. Toluene derived from the hydrocracking reaction is disproportionated in the presence of hydrogen over a zeolite catalyst and the disproportionation effluent is processed through the same recovery train as the hydrocracked product.

    Abstract translation: 用作化学原料,溶剂等的烷基芳烃通过加氢裂解富含烷基芳族化合物和贫脂肪族烃的馏分与与氢化/脱氢组分相关的特定沸石催化剂而提供。 电荷原料的特征在于基本上不存在苯和较轻的烃。 该技术特别适用于从含较高沸点和低沸点烷基芳族化合物的馏分中生产最大二甲苯。 来自加氢裂化反应的甲苯在氢气存在下在沸石催化剂上歧化,并且歧化流出物通过与加氢裂化产物相同的回收列加工。

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