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    • 73. 发明申请
    • Process for reducing fouling from flash/separation apparatus during cracking of hydrocarbon feedstocks
    • 用于在烃原料开裂期间减少闪蒸/分离装置的结垢的方法
    • US20060014993A1
    • 2006-01-19
    • US10891981
    • 2004-07-14
    • Richard StellNicholas Vidonic
    • Richard StellNicholas Vidonic
    • C07C4/04C10G9/14
    • C10G9/20C10G9/00
    • Hydrocarbon feedstock containing resid is cracked by a process comprising: (a) heating said hydrocarbon feedstock; (b) mixing the heated hydrocarbon feedstock with steam to form a mixture stream; (c) introducing the mixture stream to a flash/separation apparatus to form i) a vapor phase comprising coke precursors existing as uncoalesced condensate, and ii) a liquid phase; (d) removing the vapor phase as overhead and the liquid phase as bottoms from the flash/separation apparatus; (e) treating the overhead by contacting with a condensing means downstream of the flash/separation apparatus to at least partially coalesce the coke precursors to provide residue hydrocarbon liquid, and subsequently removing the hydrocarbon liquid; (f) heating the treated overhead to provide a heated vapor phase (g) cracking the heated vapor phase in a radiant section of a pyrolysis furnace to produce an effluent comprising olefins, the pyrolysis furnace comprising a radiant section and a convection section; and (h) quenching the effluent and recovering cracked product therefrom. An apparatus for carrying out the process is also provided.
    • 含有渣油的烃原料通过包括以下步骤的方法裂化:(a)加热所述烃原料; (b)将加热的烃原料与蒸汽混合以形成混合物流; (c)将混合物流引入闪蒸/分离装置以形成i)包含作为未经缩聚的冷凝物存在的焦炭前体的气相,和ii)液相; (d)从闪蒸/分离装置中除去气相作为塔顶馏出物和液相作为底部物质; (e)通过与闪蒸/分离装置下游的冷凝装置接触来处理塔顶馏出物,以至少部分地将焦炭前体聚结以提供残余烃液体,随后除去烃液体; (f)加热经处理的塔顶馏出物以提供加热的气相(g)在热解炉的辐射段中裂化加热的气相以产生包含烯烃的流出物,所述热解炉包括辐射段和对流段; 和(h)淬灭流出物并从其中回收裂化产物。 还提供了一种用于执行该过程的装置。
    • 74. 发明申请
    • Process for reducing fouling from flash/separation apparatus during cracking of hydrocarbon feedstocks
    • 用于在烃原料开裂期间减少闪蒸/分离装置的结垢的方法
    • US20060014992A1
    • 2006-01-19
    • US10891795
    • 2004-07-14
    • Richard StellNicholas Vidonic
    • Richard StellNicholas Vidonic
    • C07C4/04C10G9/14
    • C10G9/00C10G9/20C10G2300/107
    • Hydrocarbon feedstock containing resid is cracked by a process comprising: (a) heating the hydrocarbon feedstock; (b) mixing the heated hydrocarbon feedstock with steam and optionally water to form a mixture stream; (c) introducing the mixture stream to a flash/separation apparatus to form i) a vapor phase at its dew point which partially cracks and loses/or heat causing a temperature decrease and partial condensation of the vapor phase in the absence of added heat to provide coke precursors existing as uncoalesced condensate, and ii) a liquid phase; (d) removing the vapor phase as overhead and the liquid phase as bottoms from the flash/separation apparatus; (e) treating the overhead by contacting with a hydrocarbon-containing nucleating liquid substantially free of resid and comprising components boiling at a temperature of at least about 260° C. (500° F.) under conditions sufficient to at least partially coalesce the coke precursors to provide coke precursor liquid, in the form of hydrocarbon droplets or a continuous hydrocarbon liquid phase; (f) collecting and removing the droplets; (g) directing the treated overhead from which the droplets are removed, to a heater to provide a heated vapor phase; (h) cracking the heated vapor phase in a radiant section of a pyrolysis furnace to produce an effluent comprising olefins, the pyrolysis furnace comprising a radiant section and a convection section; and (i) quenching the effluent and recovering cracked product therefrom. An apparatus for carrying out the process is also provided.
    • 含有渣油的烃原料通过包括以下步骤的方法裂化:(a)加热烃原料; (b)将加热的烃原料与蒸汽和任选的水混合以形成混合物流; (c)将混合物流引入闪蒸/分离装置以形成i)其露点处的气相,其在不存在加热的情况下部分地裂开和损失/或加热导致气相的温度降低和部分冷凝, 提供作为未聚结的冷凝物存在的焦炭前体,和ii)液相; (d)从闪蒸/分离装置中除去气相作为塔顶馏出物和液相作为底部物质; (e)通过与基本上不含渣油的含烃成核液体接触来处理塔顶馏出物,并且包括在足以使焦炭至少部分聚结的条件下在至少约260℃(500°F)的温度下沸腾的组分 以烃液滴或连续烃液相的形式提供焦炭前体液体的前体; (f)收集和去除液滴; (g)将经除去的液滴处理的塔顶导向加热器以提供加热的气相; (h)在热解炉的辐射段中裂解加热的气相以产生包含烯烃的流出物,所述热解炉包括辐射段和对流段; 和(i)淬灭流出物并从其中回收裂化产物。 还提供了一种用于执行该过程的装置。
    • 75. 发明申请
    • Process for reducing vapor condensation in flash/separation apparatus overhead during steam cracking of hydrocarbon feedstocks
    • 用于在烃原料的蒸汽裂解期间减少闪蒸/分离装置顶部蒸气冷凝的方法
    • US20050261538A1
    • 2005-11-24
    • US10851878
    • 2004-05-21
    • Richard Stell
    • Richard Stell
    • C10G9/20C07C4/04
    • C10G9/20
    • A process for reducing fouling during cracking of a hydrocarbon feedstock containing resid is provided which comprises: introducing a mixture stream of heated hydrocarbon feedstock mixed with steam to a flash/separation apparatus to form i) a vapor phase at its dew point which partially cracks causing a temperature decrease and partial condensation of said vapor phase in the absence of added heat, and ii) a liquid phase. Partial condensation is reduced by adding a heated vaporous diluent, e.g., light hydrocarbon or superheated steam, to the flash/separation apparatus to an extent sufficient to at least partially compensate for the temperature decrease and to dilute and superheat the vapor phase, prior to removing the vapor phase as overhead for subsequent cracking and recovery of cracked product. An apparatus for carrying out the process is also provided.
    • 提供了一种在含有渣油的烃原料开裂期间减少结垢的方法,其包括:将与蒸汽混合的加热烃原料的混合物流引入闪蒸/分离装置以形成i)在其露点处产生部分裂纹的气相 在没有加热的情况下所述气相的温度降低和部分冷凝,和ii)液相。 通过向闪蒸/分离设备添加加热的蒸汽稀释剂,例如轻质烃或过热蒸汽来减少部分冷凝,其程度足以至少部分地补偿温度降低并在蒸发相之前稀释和过热气相 气相作为破裂产物后续开裂和回收的开销。 还提供了一种用于执行该过程的装置。