-
公开(公告)号：US4170592A
公开(公告)日：1979-10-09
申请号：US832007
申请日：1977-09-09
IPC分类号： C01C1/24 , C07D201/16
CPC分类号： C07D201/16
摘要： A process for the purification of a solution of .epsilon.-caprolactam in benzene, toluene or xylene by washing with a liquid, wherein the washing liquid is a solution of .epsilon.-caprolactam in water in a weight ratio of from 15 : 1 to 1 : 3, which is used in a quantity of from 5 to 20% by weight, based on the solution of caprolactam in benzene, toluene or xylene, and wherein there are several washing stages so that the equilibrium between the two solutions can be readjusted.
摘要翻译： 一种通过用液体洗涤来纯化ε-己内酰胺在苯，甲苯或二甲苯中的溶液的方法，其中洗涤液是ε-己内酰胺在水中的重量比为15:1至1:3的溶液 ，其用量为5至20重量％，基于己内酰胺在苯，甲苯或二甲苯中的溶液，并且其中有几个洗涤阶段，使得可以重新调节两种溶液之间的平衡。
-
公开(公告)号：US4090922A
公开(公告)日：1978-05-23
申请号：US765034
申请日：1977-02-02
申请人： Kurt Bauer , Hans-Walter Brandt , Jurgen Schroter
发明人： Kurt Bauer , Hans-Walter Brandt , Jurgen Schroter
摘要： Process for the separation or purification of heat-sensitive compounds by carrier-vapor distillation, wherein the superheated solvent vapor which is loaded with the compound to be distilled is cooled by treatment with condensed solvent in counter-current and the amount of condensed solvent is measured in such a manner that a saturated solution of the compound which is almost at boiling point is formed from the superheated, loaded vapor. The process being especially apted for separating or purifying 4-hydroxybenzaldehydes optionally substituted by one or more C.sub.1 -C.sub.4 -alkoxy groups.
摘要翻译： 通过载气蒸气蒸馏分离或纯化热敏化合物的方法，其中负载待蒸馏的化合物的过热溶剂蒸气通过逆流中的冷凝溶剂处理而冷却并测量冷凝溶剂的量 以过饱和的负载蒸气形成几乎沸点的化合物的饱和溶液。 该方法特别用于分离或纯化任选被一个或多个C 1 -C 4 - 烷氧基取代的4-羟基苯甲醛。
-
公开(公告)号：US4732685A
公开(公告)日：1988-03-22
申请号：US914223
申请日：1986-10-02
CPC分类号： B01J19/325 , B01D11/043
摘要： With the extraction method, a material exchange column with an ordered packing 2a or 2b on the basis of a plurality of layers 3 stacked parallel to the column axis and making point contact with one another is used. The packing 2a, 2b is perfused by a continuous and a dispersed phase in a counter current. The packing has a very large specific surface area of at least 300 m.sup.2 /m.sup.3 of packing volume. At the periphery of the packing 2a, 2b, the two phase streams are re-circulated into the packing at regular intervals through a rim seal composed of an elastic material not wettable by the dispersed phase. The rim seal is placed round the packing in the form of an elastic tube or pipe and seals the intermediate space between the internal column wall and the packing. A further improvement in the separating capacity can be achieved if pulsating operation is adopted. The method is characterized, in particular, in that an approximately constant high separating capacity is achieved with a high throughput per unit area over a relatively large loading tolerance of the column.
摘要翻译： 使用提取方法，使用具有有序填料2a或2b的材料交换柱，其基于平行于柱轴线并且彼此点接触的多个层3。 包装2a，2b由逆流中的连续分散相灌注。 填料具有非常大的比表面积至少为300m 2 / m 3的包装体积。 在包装2a，2b的周围，两相流通过由不能被分散相润湿的弹性材料构成的边缘密封圈以规则的间隔再次循环到包装中。 轮辋密封件以弹性管或管的形式放置在填料周围，并密封内部柱壁和填料之间的中间空间。 如果采用脉动操作，则可以进一步提高分离能力。 该方法的特征在于，在柱的相对大的负载公差下，在每单位面积的高通量下实现大致恒定的高分离能力。
-
4.发明授权Method of making conference call connections in computer-controlled digital telephone exchanges 失效在计算机控制的数字电话交换机中进行电话会议连接的方法
公开(公告)号：US4809262A
公开(公告)日：1989-02-28
申请号：US158574
申请日：1988-02-22
申请人： Reinhard Klose , Jurgen Schroter
发明人： Reinhard Klose , Jurgen Schroter
摘要： A method of making conference call connections in computer-controlled telephone exchanges includes combining voice signals of conference participants on a digital basis, forming a signal of a total of speaking levels of a given number of the most active participants, distributing the signal in an undamped manner, and suppressing voice signals of the inactive participants. A bit stream of the conference participants reaching a conference assembly through an incoming line is distributed to m adding processors having n channels each, and the PCM words are linearized with a code table and stored in level memories for each particular participant. A total of the linear values is formed, is added to individual participant evaluation totals and is stored in evaluation memories for each particular participant. The participant evaluation totals are transmitted to an evaluation processor which determines active channels by using a delayed mean value of the participant levels and transmits it to the adding processors. A conference total signal is created by adding linear values of all channels. Transmission signals for all channels are formed in the adding processors by compressing the conference total signal, the individual linear value of the active participants being substracted before compression. The signals thus created are stored in transmitting memories and transmitted through an outgoing line.
摘要翻译： 在计算机控制的电话交换机中进行会议呼叫连接的方法包括：在数字的基础上组合会议参与者的语音信号，形成给定数量的最活跃参与者的总共讲话水平的信号，将信号分发到无阻塞 方式和抑制非活动参与者的语音信号。 通过输入线路到达会议组件的会议参与者的比特流被分配到每个添加具有n个信道的处理器，并且PCM字用码表线性化并存储在每个特定参与者的级存储器中。 形成总共的线性值，被添加到个体参与者评估总数中，并存储在每个特定参与者的评估存储器中。 参与者评价总数被传送到评估处理器，评估处理器通过使用参与者级别的延迟平均值来确定活动通道，并将其发送到添加处理器。 通过添加所有通道的线性值创建会议总信号。 所有通道的传输信号通过压缩会议总信号在加法处理器中形成，活动参与者的个体线性值在压缩之前被减去。 由此产生的信号被存储在发送存储器中并通过输出线传输。
-
-
-
搜索结果
4 条记录 (耗时 0.018 秒)
