Process for recovery of cyclopentadienes
    5.
    发明授权
    Process for recovery of cyclopentadienes 失效
    回收环戊二烯的方法

    公开(公告)号:US4522688A

    公开(公告)日:1985-06-11

    申请号:US545661

    申请日:1983-10-26

    摘要: The process gives highly pure cyclopentadiene and methylcyclopentadiene from a cracked gasoline fraction. The merit of the process is that cyclopentadiene and methylcyclopentadiene are recovered by adding a simple distillation system to a conventional cracked gasoline treating plant without altering the plant and operating conditions thereof. An internal reflux stream is withdrawn from the stripping section of a BTX column of a conventional cracked gasoline treating plant, and is sent to a depolymerization-distillation column operated at a bottom temperature of 160.degree.-230.degree. C. The overhead stream of the column is sent to a cyclopentadiene column operated at a bottom temperature of 160.degree.-230.degree. C. Cyclopentadiene is recovered from the overhead of the column, and the bottom stream is sent to methylcyclopentadiene column operated at a bottom temperature of 170.degree.-210.degree. C. Methylcyclopentadiene is recovered from the overhead of the column.

    摘要翻译: 该方法从裂化汽油馏分中提供高度纯的环戊二烯和甲基环戊二烯。 该方法的优点是通过向常规的裂化汽油处理装置添加简单的蒸馏系统而不改变其设备和操作条件来回收环戊二烯和甲基环戊二烯。 将内部回流物流从常规裂化汽油处理装置的BTX柱的汽提段中取出,并送入在塔底温度为160°-230℃下操作的解聚 - 蒸馏塔。塔顶馏出物流 送入在160°-230℃的底部温度下操作的环戊二烯塔。从塔顶塔顶回收环戊二烯,将塔底物流送入甲基环戊二烯塔,底部温度为170°-210℃ 从柱的顶部回收甲基环戊二烯。

    Solenoid device for electromagnetically operated valve
    6.
    发明授权
    Solenoid device for electromagnetically operated valve 失效
    用于电磁阀的电磁装置

    公开(公告)号:US4091348A

    公开(公告)日:1978-05-23

    申请号:US775531

    申请日:1977-03-08

    摘要: A solenoid for selectively actuating a valve. The solenoid has a housing removably connected in a fluid-tight manner to a housing of the valve. An actuating coil is housed within the solenoid housing with an actuating plunger coaxial therewith internally thereof. The plunger is actuated reciprocably to a projected position for opening the valve when the actuating coil is energized and restores to a restored position when the coil is deenergized. The plunger terminates in a push pin of lesser diameter and defines a shoulder therewith and an opposite end terminates in an axial shaft or axle shaft of lesser diameter which defines a second shoulder therewith. Flexible dampeners are mounted on both shoulders for dampening the plunger movement as it reaches two extreme positions corresponding to the projected and restored positions thereof. The dampeners engage portions of the solenoid housing to dampen the plunger arrival at its terminal or extreme positions.

    摘要翻译: 用于选择性地致动阀的螺线管。 螺线管具有以流体密封的方式可拆卸地连接到阀的壳体的壳体。 驱动线圈容纳在螺线管壳体内,其内部具有与其同轴的致动柱塞。 当致动线圈通电时,柱塞被可往复运动到突出位置,用于打开阀,并且当线圈断电时恢复到恢复位置。 柱塞终止于较小直径的推销并且与其一起形成一个肩部,相对的端部终止于一个较小直径的轴向轴或车轴,该轴与轴定义了第二个肩部。 柔性阻尼器安装在两个肩部上,用于当柱塞移动达到与其突出和恢复位置相对应的两个极限位置时抑制柱塞运动。 阻尼器接合螺线管外壳的部分,以将柱塞到达其末端或极限位置。