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    • 3. 发明授权
    • Natural gas liquefaction process
    • 天然气液化过程
    • US08616021B2
    • 2013-12-31
    • US12527539
    • 2008-03-04
    • Moses Minta
    • Moses Minta
    • F25J3/00
    • F25J1/0092F25J1/0022F25J1/004F25J1/0042F25J1/005F25J1/0072F25J1/0082F25J1/0095F25J1/0218F25J1/025F25J1/0254F25J1/0268F25J1/0278F25J1/0288F25J1/0292F25J1/0297F25J2210/06F25J2220/62F25J2230/04F25J2230/30F25J2270/90
    • The invention relates to a process for liquefying a gas stream rich in methane, said process comprising: (a) providing said gas stream; (b) withdrawing a portion of said gas stream for use as a refrigerant; (c) compressing said refrigerant; (d) cooling said compressed refrigerant with an ambient temperature cooling fluid; (e) subjecting the cooled, compressed refrigerant to supplemental cooling; (f) expanding the refrigerant of (e) to further cool said refrigerant, thereby producing an expanded, supplementally cooled refrigerant; (g) passing said expanded, supplementally cooled refrigerant to a heat exchange area; and, (h) passing said gas stream of (a) through said heat exchange area to cool at least part of said gas stream by indirect heat exchange with said expanded, supplementally cooled refrigerant, thereby forming a cooled gas stream. In further embodiments for improved efficiencies, additional supplemental cooling may be provided after one or more other compression steps.
    • 本发明涉及一种液化富含甲烷的气流的方法,所述方法包括:(a)提供所述气流; (b)取出一部分所述气流以用作制冷剂; (c)压缩所述制冷剂; (d)用环境温度的冷却流体冷却所述压缩的制冷剂; (e)使经冷却的压缩制冷剂进行补充冷却; (f)使(e)的制冷剂膨胀,以进一步冷却所述制冷剂,由此制造膨胀的补充冷却的制冷剂; (g)将所述膨胀的补充冷却的制冷剂通过热交换区域; 和(h)使(a)的所述气流通过所述热交换区域,以通过与所述膨胀的补充冷却的制冷剂进行间接热交换来冷却至少部分所述气流,从而形成冷却的气流。 在用于提高效率的另外的实施例中,可以在一个或多个其它压缩步骤之后提供附加补充冷却。
    • 4. 发明申请
    • Low Emission Tripe-Cycle Power Generation Systems and Methods
    • 低排放三相循环发电系统和方法
    • US20130104562A1
    • 2013-05-02
    • US13702536
    • 2011-06-09
    • Russell H. OelfkeMoses Minta
    • Russell H. OelfkeMoses Minta
    • F02C3/02
    • F02C3/02F02C1/007F02C6/18F02C7/08F05D2260/61Y02E20/16
    • Methods and systems for low emission power generation in hydrocarbon recovery processes are provided. One system includes a gas turbine system adapted to combust a fuel and an oxidant in the presence of a compressed recycle stream to provide mechanical power and a gaseous exhaust. The compressed recycle stream acts to moderate the temperature of the combustion process. A boost compressor can boost the pressure of the gaseous exhaust before being compressed into the compressed recycle stream. A purge stream may be tapped off from the compressed recycle stream and directed to a C02 separator which discharges C02 and a nitrogen-rich gas, which may be expanded in a gas expander to generate additional mechanical power.
    • 提供了烃回收过程中低排放发电的方法和系统。 一个系统包括燃气轮机系统,其适于在存在压缩的再循环流的情况下燃烧燃料和氧化剂以提供机械动力和气体排气。 压缩的再循环料流用于调节燃烧过程的温度。 增压压缩机可以在压缩到压缩的再循环流中之前提高气体排气的压力。 吹扫流可以从压缩的再循环流中分离出并且被引导到排出CO 2和富氮气体的CO 2分离器,该二氧化碳分离器可以在气体膨胀器中膨胀以产生额外的机械功率。