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    Propane recovery methods
    6.
    发明授权
    Propane recovery methods 有权
    丙烷回收方法

    公开(公告)号：US6116050A

    公开(公告)日：2000-09-12

    申请号：US209931

    申请日：1998-12-04

    申请人： Jame Yao ,  Jong Juh Chen ,  Rong-Jwyn Lee ,  Douglas G. Elliot

    发明人： Jame Yao ,  Jong Juh Chen ,  Rong-Jwyn Lee ,  Douglas G. Elliot

    IPC分类号： F25J3/02 ,  F25J3/00

    CPC分类号： F25J3/0242 ,  F25J3/0209 ,  F25J3/0219 ,  F25J3/0233 ,  F25J2200/04 ,  F25J2200/50 ,  F25J2200/74 ,  F25J2200/76 ,  F25J2200/78 ,  F25J2205/04 ,  F25J2210/06 ,  F25J2210/12 ,  F25J2230/60 ,  F25J2235/60 ,  F25J2240/02 ,  F25J2270/02 ,  F25J2270/12 ,  F25J2270/60 ,  F25J2270/88 ,  F25J2280/02 ,  F25J2280/40

    摘要： The present invention is directed to methods for separating and recovering propane, propylene and heavier hydrocarbons, i.e., the C.sub.3 + hydrocarbons, from a gas feed, e.g., raw natural gas or a refinery or petroleum plant gas stream. These methods employ sequentially configured first and second distillation columns, e.g., a de-methanizer tower followed by a de-ethanizer tower. A cooled gas feed condensate is separated in the first column into methane and a liquid phase comprising ethane and heavier hydrocarbons. The liquid phase is separated in the second column into a gas phase primarily comprising ethane and a second liquid phase primarily comprising the desired C.sub.3+ hydrocarbons. At least a portion of the second gas phase is introduced into the first distillation column as an overhead reflux to improve the separation of C.sub.3+ hydrocarbons. The methods of the present invention permit separation and recovery of more than about 99% of the C.sub.3+ hydrocarbons in the gas feed at higher operating pressures. Further, by cooling the second gas phase with a liquid condensed in a lower tray of the first column, significant capital and operating costs may be saved. By using the self refrigeration system, the need for external refrigeration is eliminated and the separation efficiency is improved in the first column. Accordingly, the processes of the present invention result in achieving higher liquid recovery levels with lower capital requirements and significant savings in operation.

    摘要翻译： 本发明涉及用于从气体原料例如原料天然气或炼油厂或石油工厂气流中分离和回收丙烷，丙烯和较重烃（即C 3+烃）的方法。 这些方法采用顺序配置的第一和第二蒸馏塔，例如脱甲烷塔，然后脱乙烷塔。 冷却的气体进料冷凝物在第一塔分离成甲烷和包含乙烷和较重烃的液相。 将液相在第二塔中分离成主要包含乙烷和主要包含所需C 3 +烃的第二液相的气相。 将第二气相的至少一部分作为塔顶回流引入第一蒸馏塔，以改进C3 +烃的分离。 本发明的方法允许在更高的操作压力下分离和回收气体进料中超过约99％的C3 +烃。 此外，通过在第一塔的下塔板中冷凝的液体冷却第二气相，可以节省大量的资本和运营成本。 通过使用自制冷却系统，消除了对外部制冷的需要，并且在第一列中提高了分离效率。 因此，本发明的方法导致获得更高的液体回收水平，具有较低的资本要求和显着的操作节省。

    Internal refrigeration for enhanced NGL recovery
    7.
    发明授权
    Internal refrigeration for enhanced NGL recovery 有权
    内部制冷用于增强NGL恢复

    公开(公告)号：US07257966B2

    公开(公告)日：2007-08-21

    申请号：US11032464

    申请日：2005-01-10

    申请人： Rong-Jwyn Lee ,  Ying Zhang ,  Jame Yao ,  Jong Juh Chen ,  Douglas G. Elliot

    发明人： Rong-Jwyn Lee ,  Ying Zhang ,  Jame Yao ,  Jong Juh Chen ,  Douglas G. Elliot

    IPC分类号： F25J3/00

    CPC分类号： F25J3/0219 ,  F25J3/0209 ,  F25J3/0233 ,  F25J3/0238 ,  F25J2200/02 ,  F25J2200/04 ,  F25J2200/40 ,  F25J2200/70 ,  F25J2200/78 ,  F25J2205/04 ,  F25J2210/06 ,  F25J2210/12 ,  F25J2235/60 ,  F25J2240/02 ,  F25J2270/02 ,  F25J2270/12 ,  F25J2270/60 ,  F25J2270/88 ,  F25J2290/40

    摘要： The present invention is directed to methods for improving the efficiency of processes for the recovery of natural gas liquids from a gas feed, e.g., raw natural gas or a refinery or petrochemical plant gas stream. These methods may be employed with most, if not all, conventional separation methods using distillation towers, e.g., a demethanizer and/or deethanizer column. The methods of the present invention involve installing an internal refrigeration system consisting of an open cycle refrigerant withdrawn from a distillation column and a closed cycle refrigerant derived from the open cycle refrigeration system. A separator is installed downstream of the recycle compressor discharge cooler in the open cycle refrigeration scheme. At least a portion of liquid withdrawn from this separator is used as a closed cycle refrigerant by indirect heat exchange with the inlet gas or other process streams. Thus a closed refrigeration cycle enhances the performance of the open refrigeration cycle.

    摘要翻译： 本发明涉及用于提高天然气液体从天然气或原料天然气或炼油厂或石油化工厂气体流中回收天然气液体的方法的效率的方法。 这些方法可以与使用蒸馏塔的大多数（如果不是全部）常规分离方法一起使用，例如脱甲烷塔和/或脱乙烷塔。 本发明的方法涉及安装由从蒸馏塔排出的开放循环制冷剂和来自开式循环制冷系统的封闭循环制冷剂组成的内部制冷系统。 在开放循环制冷方案中，在循环压缩机排放冷却器的下游安装分离器。 从该分离器排出的至少一部分液体通过与入口气体或其它工艺流进行间接热交换而被用作封闭循环制冷剂。 因此，封闭的制冷循环增强了开放制冷循环的性能。

    Hybrid refrigeration cycle for combustion turbine inlet air cooling
    9.
    发明授权
    Hybrid refrigeration cycle for combustion turbine inlet air cooling 有权
    燃气轮机入口空气冷却的混合制冷循环

    公开(公告)号：US06457315B1

    公开(公告)日：2002-10-01

    申请号：US10020085

    申请日：2001-12-07

    申请人： Rong-Jwyn Lee ,  Jong Juh Chen ,  Jame Yao ,  Douglas G. Elliot ,  Pallav Jain

    发明人： Rong-Jwyn Lee ,  Jong Juh Chen ,  Jame Yao ,  Douglas G. Elliot ,  Pallav Jain

    IPC分类号： F02C100

    CPC分类号： F02C7/143 ,  F02C7/16 ,  F05D2210/14 ,  Y02T50/675

    摘要： A method and apparatus for enhancing the power output and operational efficiency of a combustion turbine system using a combined refrigerant substantially comprising a first refrigerant and a second refrigerant, whereby the combined refrigerant exhibits a total pressure substantially greater than each respective first and second refrigerant at a temperature inside an evaporative chiller. In a preferred embodiment, the combined refrigerant cools turbine inlet air through the exchange of heat from the inlet air, in an air chiller, with a coolant which is cooled by the combined refrigerant in the evaporative chiller. The combined refrigerant, after it is used to cool the coolant in the evaporative chiller, is separated through the use of a liquid absorbent which absorbs the second refrigerant to form a solution pair. The non-absorbed first refrigerant is compressed, condensed and then recirculated to eventually join the second refrigerant which is desorbed from the solution pair in a regenerator. The economic advantage of the present invention is enhanced by thermally linking the heat required to regenerate the second absorptive refrigerant from the solution pair with the hot exhaust of heat available from the gas turbine.

    摘要翻译： 一种用于使用基本上包括第一制冷剂和第二制冷剂的组合制冷剂来提高燃料涡轮机系统的功率输出和操作效率的方法和装置，由此组合的制冷剂表现出总体压力基本上大于相应的第一和第二制冷剂的总压力 蒸发式冷水机内部温度。 在一个优选实施例中，组合的制冷剂通过来自空气冷却器中的入口空气的热量与通过蒸发式冷却器中的组合制冷剂冷却的冷却剂来冷却涡轮机入口空气。 组合的制冷剂在用于冷却蒸发冷却器中的冷却剂之后，通过使用吸收第二制冷剂以形成溶液对的液体吸收剂分离。 未吸收的第一制冷剂被压缩，冷凝，然后再循环，以最终连接在再生器中从溶液对解吸的第二制冷剂。 通过将从溶液对再生第二吸收性制冷剂所需的热与从燃气轮机获得的热的热排出热连接来增强本发明的经济优势。