Method for inhibiting hydrate formation
    21.
    发明授权
    Method for inhibiting hydrate formation 失效
    抑制水合物形成的方法

    公开(公告)号:US5583273A

    公开(公告)日:1996-12-10

    申请号:US448698

    申请日:1995-05-24

    Abstract: A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate forming constituents is disclosed. More specifically, the method can be used in treating a petroleum fluid stream such as natural gas conveyed in a pipe to inhibit the formation of a hydrate restriction in the pipe. The hydrate inhibitors used for practicing the method are substantially water soluble polymers formed from a cyclic imino ether. Such polymers may be ring closed cyclic imino ether ("CIE") polymers, ring opened CIE polymers, or combinations thereof. Some examples of ring opened CIE polymers include various N-acyl polyalkyleneimines produced by cationic polymerization, such as N-acyl substituted polyethyleneimine, N-acyl substituted polypropyleneimine, N-acyl substituted polybutyleneimine, N-acyl substituted polypentyleneimine and copolymers thereof. Ring closed CIE polymers may be derived from free radical or anionic polymerization of 2-alkenyl-2-oxazolines, 2-alkenyl-2-oxazines, and other cyclic imino ethers having an alkene functional group. Also, such ring closed and ring opened CIE polymers can be copolymerized with other substantially water soluble polymers or used in various ratios with other substantially water soluble polymers and copolymers. Preferably, a solvent such as water, brine, alcohol, or mixtures thereof is used to produce an inhibitor solution or mixture to facilitate treatment of the petroleum fluid stream.

    Abstract translation: 公开了一种抑制在具有水合物形成成分的流体中形成笼形水合物的方法。 更具体地说,该方法可用于处理在管道中输送的天然气等石油流体流,以抑制管道中的水合物限制。 用于实施该方法的水合物抑制剂基本上是由环状亚氨基醚形成的水溶性聚合物。 这样的聚合物可以是闭环的环亚胺醚(“CIE”)聚合物,开环的CIE聚合物,或其组合。 开环的CIE聚合物的一些实例包括通过阳离子聚合制备的各种N-酰基聚亚烷基亚胺,例如N-酰基取代的聚乙烯亚胺,N-酰基取代的聚亚丙基亚胺,N-酰基取代的聚亚苯基亚胺,N-酰基取代的聚亚苯基亚胺及其共聚物。 环封闭的CIE聚合物可以衍生自具有烯官能团的2-链烯基-2-恶唑啉,2-烯基-2-恶嗪和其它环状亚氨基醚的自由基或阴离子聚合。 此外,这种闭环和开环的CIE聚合物可以与其它基本上水溶性的聚合物共聚,或与其它基本上水溶性的聚合物和共聚物以各种比例共聚。 优选地,使用溶剂如水,盐水,醇或其混合物以产生抑制剂溶液或混合物以便于处理石油流体物流。

    Freeze prediction system
    26.
    发明授权

    公开(公告)号:US10316499B2

    公开(公告)日:2019-06-11

    申请号:US15988964

    申请日:2018-05-24

    Applicant: Ademco Inc.

    Abstract: A freeze prediction system for components such as one or more water pipes situated in a building. The building may have a heating system, a mechanism with a temperature setting connected to the heating system, and an indoor temperature indicator connected to the thermostat. A call may be made for heat if thermostat setting is greater than an indoor temperature. A check may be made as to whether a call for heat may be answered. Outdoor conditions may be read and accounted for in the system. An expected time may be calculated of a freeze danger. One may determine whether the freeze danger is significant according to the expected time of freeze danger compared to a predetermined time. If the freeze danger is not significant, a regular equipment failed alert may be sent out. If the freeze danger is significant, a pipe freeze warning alert may be sent out.

    Circulating inert-gas seal system based on gas-supply servo device and QHSE based storage and transportation method

    公开(公告)号:US20180216784A1

    公开(公告)日:2018-08-02

    申请号:US15936432

    申请日:2018-03-27

    Applicant: Qiangdan Sun

    Abstract: A circulating inset-gas seal system based on gas-supply servo device and QHSE based storage and transportation method are provided. The gas-supply servo device includes a servo constant pressure unit including: inlet gas compressors a charging check valve, a gas supply container and a degassing valve control unit which are connected in sequence and communicated and controlled by a one-way valve. According to a preset gas pressure of the gas phase space in the material container, a inert sealing medium filled in the material container group is received, stored and released via an inerting pipe to form a station-type circulating inert seal system. A multi-group circulating inerting system cooperates with a mobile material container for self-sealing loading and unloading, which is capable of realizing a QHSE storage and transportation system with no gas phase emission.

    METHOD AND SYSTEM FOR HEATING NATURAL GAS
    29.
    发明申请
    METHOD AND SYSTEM FOR HEATING NATURAL GAS 审中-公开
    用于加热天然气的方法和系统

    公开(公告)号:US20150247601A1

    公开(公告)日:2015-09-03

    申请号:US14427126

    申请日:2013-09-17

    Applicant: BASF SE

    Inventor: Mirko Haider

    Abstract: The invention relates to a method and a system for heating natural gas, comprising the following method steps: a) supplying natural gas, which has a temperature in the range between −10 DEG C and 50 DEG C and a pressure of at least 30 bar, from a natural gas supply line to a first hollow chamber system of a heat exchanger, b) supplying a heating medium, which has a temperature in the range between 30 DEG C and 60 DEG C, to a second hollow chamber system of the heat exchanger, the first and the second hollow chamber systems being sealed from each other and relative to the surroundings, c) heating the natural gas in the first hollow chamber system to a temperature in the range between 20 DEG C and 150 DEG C by means of the heating medium in the second hollow chamber system, a plate heat exchanger being used as the heat exchanger and comprising at least two pairs of heat exchanging plates, at least the outer edges of the heat exchanging plates of each pair of heat exchanging plates being completely welded together, and d) leading away the heated natural gas from the first hollow chamber system to at least one further treatment step.

    Abstract translation: 本发明涉及加热天然气的方法和系统,包括以下方法步骤:a)供给温度在-10℃至50℃之间的温度和至少30巴的压力的天然气 从天然气供应管线到热交换器的第一中空室系统,b)将温度在30℃和60℃之间的温度的加热介质供应到第二中空室系统的热量 交换器,第一和第二中空室系统彼此密封并相对于周围环境,c)将第一中空室系统中的天然气加热至20℃至150℃的温度,借助于 第二中空室系统中的加热介质,用作热交换器的板式热交换器,并且包括至少两对热交换板,至少每对热交换板的热交换板的外边缘 g完全焊接在一起,并且d)将加热的天然气从第一中空室系统引导到至少一个另外的处理步骤。

    Methods using formate gels to condition a pipeline or portion thereof
    30.
    发明授权
    Methods using formate gels to condition a pipeline or portion thereof 失效
    使用甲酸凝胶来调节管道或其部分的方法

    公开(公告)号:US08746044B2

    公开(公告)日:2014-06-10

    申请号:US13347819

    申请日:2012-01-11

    Abstract: A gelled composition for pipeline, flowline, pipeline jumper or flowline jumper dewatering or preventing ingress of seawater into open pipeline systems or components during tie-in operations of jumpers or additional pipe, valving, manifolds, subsea pipeline architecture or flow conduits operations is disclosed, where the composition includes a concentrated metal formate solution and a hydratable polymer. The gelled formate compositions have improved dewatering properties with 100% or 360 pipe coverage. The gelled formate compositions have can also be reused by breaking and reformulation.

    Abstract translation: 公开了用于管道,流线,管道跳线或流线跳线脱水或凝胶化的组合物,用于在跳线或附加管道,阀门,歧管,海底管道结构或流动管道操作的连接操作期间将海水进入开放管道系统或部件, 其中组合物包括浓缩的金属甲酸盐溶液和可水合的聚合物。 凝胶状甲酸盐组合物具有100%或360管道覆盖度的改善的脱水性能。 凝胶状甲酸酯组合物也可以通过破碎和重新配制重复使用。

Patent Agency Ranking