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    • 1. 发明授权
    • Medium consistency pulp ozone bleaching
    • 中等稠度纸浆臭氧漂白
    • US5411633A
    • 1995-05-02
    • US693287
    • 1991-04-30
    • Joseph R. PhillipsBrian F. GreenwoodErwin FunkStephen Dunn
    • Joseph R. PhillipsBrian F. GreenwoodErwin FunkStephen Dunn
    • D21C9/153
    • D21C9/153
    • Medium consistency (e.g. about 6-15%) paper pulp is effectively bleached with ozone in a carrier gas (typically oxygen) by effecting efficient separation of carrier gas from the pulp after reaction with the ozone, and introducing the ozone into the pulp at a pressure of about 10-13 bar. Ozone in oxygen and medium consistency paper pulp are fed to a fluidizing mixer; the intimate uniform mixture produced is then passed upwardly in a reaction vessel until about 99% of the ozone has been consumed, and then separation of gas from the pulp is initiated by moving the pulp mixture into a generally horizontal tube leading to a gas zone in a large diameter retention vessel. A pressurized gas pad is maintained at and above the introduction of the pulp into the retention vessel, while the level of pulp in the retention vessel is maintained below the point of introduction. The pulp may be withdrawn from the retention vessel with a fluidizing degassing pump, and the pressurized gas removed from the top of the vessel may be fed to an apparatus using oxygen gas under pressure.
    • 中等稠度(例如约6-15%)纸浆通过在与臭氧反应后有效地从纸浆中分离出载体气体(通常为氧气)中,用臭氧有效漂白,并将臭氧引入到纸浆中 压力约10-13巴。 将氧气和中等稠度纸浆中的臭氧进料到流化混合器中; 然后将产生的紧密的均匀混合物在反应容器中向上通入,直到约99%的臭氧消耗掉,然后通过将纸浆混合物移动到通向一个气体区域的气体区域中而从纸浆中分离气体 大直径保留容器。 加压气垫保持在纸浆引入到保留容器中和之上,而保留容器中的纸浆水平保持在引入点以下。 纸浆可以用流化脱气泵从保留容器中取出,并且从容器顶部除去的加压气体可以在压力下使用氧气进料至设备。
    • 3. 发明申请
    • SITU EXTRACTION PROCESS FOR THE RECOVERY OF HYDROCARBONS
    • 用于油气回收的原油提取方法
    • US20100236783A1
    • 2010-09-23
    • US12601552
    • 2008-05-29
    • John NennigerStephen Dunn
    • John NennigerStephen Dunn
    • E21B43/16C09K8/60G06G7/50G06F17/10
    • E21B43/16C09K8/58C09K8/592
    • An in situ extraction process for the recovery of hydrocarbons from a hydrocarbon bearing formation, including the steps of injecting a solvent consisting substantially of one of the group of H2S, Ammonia or COS into the formation to mobilize the hydrocarbons for extraction by forming a mobile in situ extraction fluid; and lifting the extraction fluid containing the mobilized hydrocarbons from the underground formation to the surface. In a further aspect an extraction method for a specific reservoir is provided including the steps of: establishing a minimum desired extraction rate, based on a value for the porosity, permeability and dead oil viscosity of the in situ bitumen in the specific reservoir, determining a desired minimum operating extraction temperature determining a desirable range of operating pressures identifying solvents predicted to deliver the operating extraction temperature within the range of operating pressures, and selecting a preferred solvent to use in the process.
    • 一种用于从含烃地层回收烃的原位萃取方法,包括以下步骤:将基本上由H 2 S,氨或COS组成的溶剂组成的溶剂注入到地层中,以通过形成移动体来移动烃进行萃取 原位萃取液; 并将含有起动烃的提取流体从地下地层提升到地面。 在另一方面,提供了一种用于特定储存器的提取方法,包括以下步骤:基于特定储存器中原位沥青的孔隙率,渗透性和死油粘度的值来确定最小期望提取率,确定 期望的最小操作提取温度确定了操作压力的期望范围,该操作压力识别预期将操作提取温度提供在操作压力范围内的溶剂,以及选择在该过程中使用的优选溶剂。
    • 5. 发明授权
    • Situ extraction process for the recovery of hydrocarbons
    • 用于烃回收的原位萃取方法
    • US08857512B2
    • 2014-10-14
    • US12601552
    • 2008-05-29
    • John NennigerStephen Dunn
    • John NennigerStephen Dunn
    • E21B43/16C09K8/592C09K8/58
    • E21B43/16C09K8/58C09K8/592
    • An in situ extraction process for the recovery of hydrocarbons from a hydrocarbon bearing formation, including the steps of injecting a solvent consisting substantially of one of the group of H2S, Ammonia or COS into the formation to mobilize the hydrocarbons for extraction by forming a mobile in situ extraction fluid; and lifting the extraction fluid containing the mobilized hydrocarbons from the underground formation to the surface. In a further aspect an extraction method for a specific reservoir is provided including the steps of: establishing a minimum desired extraction rate, based on a value for the porosity, permeability and dead oil viscosity of the in situ bitumen in the specific reservoir, determining a desired minimum operating extraction temperature determining a desirable range of operating pressures identifying solvents predicted to deliver the operating extraction temperature within the range of operating pressures, and selecting a preferred solvent to use in the process.
    • 一种用于从含烃地层回收烃的原位萃取方法,包括以下步骤:将基本上由一组H 2 S,氨或COS组成的溶剂注入到地层中以通过在 原位萃取液; 并将含有起动烃的提取流体从地下地层提升到地面。 在另一方面,提供了一种用于特定储存器的提取方法,包括以下步骤:基于特定储存器中原位沥青的孔隙率,渗透性和死油粘度的值来确定最小期望提取率,确定 期望的最小操作提取温度确定了操作压力的期望范围,该操作压力识别预期将操作提取温度提供在操作压力范围内的溶剂,以及选择在该过程中使用的优选溶剂。
    • 8. 发明授权
    • Database management system
    • 数据库管理系统
    • US5668991A
    • 1997-09-16
    • US385912
    • 1995-02-09
    • Stephen DunnPeter Kelbie
    • Stephen DunnPeter Kelbie
    • G06F11/14G06F17/30
    • G06F17/30371G06F11/1471G06F2201/80Y10S707/99937Y10S707/99952Y10S707/99953
    • A database system is described in which changes to a database file are recorded in a journal file. The journal file comprises a sequence of after-image records each having a database identifier indicating which database record it relates. Periodically, a dump is taken of the database. At regular intervals, between dumps the journal file is merged with any previously archived journal file to form a merged file, the records are sorted into order of their database identifiers and the merged file is filtered to remove all but the latest after-image record relating to each particular database record. The filtered journal file is archived. If the database file is corrupted, it can be recovered by applying the filtered journal file to a dump file. Because the journal file has been filtered, recovery is faster. The filtered journal can also be used for performing an off-line integrity check on the reconstructed database file.
    • 描述了数据库系统,其中将数据库文件的更改记录在日志文件中。 日记文件包括一系列的后图像记录,每一个都具有数据库标识符,该数据库标识符指示它涉及哪个数据库记录。 定期地,转储数据库。 在定期间隔之间,转储日志文件与任何以前存档的日志文件合并以形成合并文件,记录按照其数据库标识符的顺序进行排序,并且合并的文件被过滤以除去除最新的后续映像记录之外的所有内容 到每个特定的数据库记录。 已过滤的日记文件已归档。 如果数据库文件已损坏,则可以通过将已过滤的日志文件应用于转储文件来恢复。 由于日记文件已被过滤,恢复速度更快。 已过滤的日记也可用于对重建的数据库文件执行离线完整性检查。