-
1.发明授权
公开(公告)号：US4241216A
公开(公告)日：1980-12-23
申请号：US000006
申请日：1979-01-02
摘要： A continuous process for the preparation in at least one esterification reactor of phthalate diesters utilizing phthalic acid or anhydride and a stoichiometric excess of at least one saturated aliphatic alcohol containing about 4 to about 10 carbon atoms comprises (a) reaction of phthalic acid or anhydride with said alcohol in a reactor zone, (b) purification of the diester in a purification zone in which the reaction product is neutralized with an alkali metal hydroxide, i.e., sodium hydroxide, to separate the diester and the unreacted phthalic acid or anhydride together with said saturated alcohol utilized in the reaction, said reaction product is separated into an organic phase and an aqueous waste phase. The organic phase is washed with water, steam stripped, treated with activated charcoal and filtered to purify the diester product desired, (c) the aqueous phase containing monoester is separated from said organic phase in step (b) is purified by filtration to remove solid impurities, carbon treated to remove color bodies, and acidified and extracted with the same alcohol used in the esterification to obtain an organic phase which can be recycled to the reaction zone of the process without causing discoloration of the desired diester product of the process.In the monoester purification process, acidification is accomplished utilizing a strong organic acid, i.e., sulfuric acid, prior thereto or simultaneously with extraction utilizing the same alcohol used in the esterification process. Purification of the aqueous waste streams produced in the process can be accomplished using activated charcoal to remove organic wastes and precipitation of inorganic salts to remove inorganic impurities produced in the process.
摘要翻译： 使用邻苯二甲酸或酸酐和化学计量过量的至少一种含有约4至约10个碳原子的饱和脂肪醇的至少一种邻苯二甲酸二酯的酯化反应器中的制备的连续方法包括（a）邻苯二甲酸或酸酐与 所述醇在反应器区中，（b）在纯化区中纯化二酯，其中反应产物用碱金属氢氧化物即氢氧化钠中和，以将二酯和未反应的邻苯二甲酸或酸酐与所述的 在反应中使用的饱和醇，将所述反应产物分离成有机相和废水相。 有机相用水洗涤，蒸汽汽提，用活性炭处理，过滤以纯化所需的二酯产物，（c）步骤（b）中从所述有机相中分离含有单酯的水相，通过过滤纯化以除去固体 杂质，碳处理以除去发色体，并用与酯化反应中使用的相同的醇酸化和萃取，以获得可以再循环到该方法的反应区的有机相，而不会导致该方法的所需二酯产物的变色。 在单酯纯化方法中，使用强酸性有机酸（即硫酸）在其之前或同时使用与酯化方法中使用的相同的醇进行酸化。 在该方法中产生的废水流的纯化可以使用活性炭来实现，以除去有机废物和沉淀无机盐以除去在该过程中产生的无机杂质。
-
公开(公告)号：US3968487A
公开(公告)日：1976-07-06
申请号：US514495
申请日：1974-10-15
CPC分类号： H03M1/1225 , H04L25/0272
摘要： The system includes: a number of subassemblies, each containing a set of switches connectable at their pair of inputs to different sources of analog signals and containing a multiplexer/decoder having outputs connected to different switches for their selective actuation; a differential amplifier having a pair of inputs connected to the pair of outputs of all of the switches; analog/digital converter means having its input connected to the output of the amplifier and having outputs providing multi-bit digital information; and control means that provides various functions.
摘要翻译： 该系统包括：多个子组件，每个子组件包含一组可在其输入对上连接到不同的模拟信号源的开关，并且包含具有连接到不同开关的输出以用于其选择性致动的多路复用器/解码器; 差分放大器，其具有连接到所有开关的所述一对输出的一对输入; 模拟/数字转换器意味着其输入连接到放大器的输出并且具有提供多位数字信息的输出; 以及提供各种功能的控制装置。
-
公开(公告)号：US4024501A
公开(公告)日：1977-05-17
申请号：US609942
申请日：1975-09-03
CPC分类号： H04L12/40032 , H04L25/26
摘要： A line driver system for digital communication, using logic-level voltages, between an electronic transmitter-receiver device and an electronic receiver device, such as between a computer and a typewriter, a line printer or a cathode ray tube, has the transmitter-receiver device at a location remote from the receiver device. An output of the transmitter-receiver device is electronically coupled to an input of the receiver device using one line of a communications bus. This output of the transmitter-receiver device is coupled to that line of the bus through an optical isolator and then through a power booster. The receiver device has an output that provides a voltage signal when the receiver device is switched on-line. This voltage signal is provided at that output of the receiver device when the receiver device is capable of transforming digital information, that is provided at its input, to a readable form that is printed or displayed by the receiver device. This output of the receiver device is coupled through another optical isolator and through another power booster to a second line of the bus so that this second line of the bus receives a voltage signal when the receiver device is in the on-line condition. This second line of the bus is electronically coupled to an input of the transmitter-receiver device that senses the presence of this signal at that input prior to initiating a transmittal of digital information as logic-level voltages to the first line of the bus to provide logic-level voltages at the input of the receiver device. Each power booster has a high current gain amplifier with unity voltage gain. When the receiver device is also a transmitter device another output of the receiver device is electronically coupled through an optical isolator and a further power booster to a third line of the bus that is electronically coupled to another input of the transmitter-receiver device so that digital information as logic-level voltages are received from the receiver device by the transmitter-receiver device.
-
公开(公告)号：US4005387A
公开(公告)日：1977-01-25
申请号：US643350
申请日：1975-12-22
CPC分类号： G05B19/04
摘要： During the use of process equipment it is necessary to position control valves, change analog set-point signals for process controllers, move thermocouples to specific positions in thermowells, etc. A computer control system for these operations utilizes binary information on three sets of bits of a bus and an execute signal on another bit provided by a computer, usually at a remote area, to select the device of the equipment to be changed and to make the change. The system includes: an information interface card; a number of actuator module cards; decoder/demultiplexer means; and device select means. The interface card is connectable to first and second sets of bits of a bus that is connectable to additional systems. The device select means is connected to a third set of bits of the bus. The binary information to the device select means results in a signal only at one of its outputs, each output being connected to a different system. For the computer control system that output is connected to the input of first inverter means on the interface card. Second inverter means on the interface card is connectable to that another bit of the bus to receive the execute pulse to initiate the operation of the system, if selected by the device selector means. First and second gate means on the card have for each a number of gates with first and second inputs and an output. Means connected to these first inputs of the first and second gate means are connectable to different bits of the first and second sets, respectively, of bits of the bus. The second inputs of the first and second gate means are connected to the output of the first inverter means to open the gates when that inverter means is provided the device select signal. The inputs of the decoder/demultiplexer are connected to the outputs of the gates of the second gate means. Each actuator module card includes: storage buffer means having inputs corresponding in number to the number of gates of the first gate means, a corresponding number of outputs, and an additional input to receive a load signal to provide at those outputs retained binary information corresponding to the signals at the outputs of the gates of the first gate means at the completion of the load signal; means responsive to binary information at the outputs of the storage buffer means to provide at least one signal to change the operation of a device of the process equipment; a gate; and additional inverter means having an input and having its output connected to an input of the gate, while the output of the gate is connected to the load input of the storage buffer means. Another input of that gate on each module card is connected to the output of the second inverter means on the interface card to provide a load signal to the storage buffer means, when the additional inverter means of that card is signalled by the decoder/demultiplexer means to signal the means to change the device of the process equipment. The additional inverter means have their inputs connected to different outputs of the decoder/demultiplexer means.
-
公开(公告)号：US3970516A
公开(公告)日：1976-07-20
申请号：US535237
申请日：1974-12-23
摘要： Apparatus for producing a plurality of filter press diaphragms at any one time is disclosed herein. In one form of the invention the apparatus includes a sealed housing containing a plurality of sealed modules fed from a common header, to produce the diaphragms batch-wise. In another form of the invention, an indexing table is employed to produce the diaphragms continuously.
摘要翻译： 本文公开了用于在任何时间生产多个压滤膜的装置。 在本发明的一种形式中，该装置包括密封壳体，其包含从公共集管供给的多个密封模块，以分批地产生隔膜。 在本发明的另一形式中，使用分度台连续地制造隔膜。
-
公开(公告)号：US4137396A
公开(公告)日：1979-01-30
申请号：US829436
申请日：1977-08-31
摘要： An improvement in the process for the removal of residual catalyst from polyether polyols is achieved by the use of a solvent wash and recovery system.
摘要翻译： 通过使用溶剂洗涤和回收系统来实现从聚醚多元醇中除去残余催化剂的方法的改进。
-
7.发明授权
公开(公告)号：US4000065A
公开(公告)日：1976-12-28
申请号：US524806
申请日：1974-11-18
CPC分类号： C02F1/444 , B01D61/58 , C02F1/441 , B01D61/025 , B01D61/145
摘要： Aqueous streams contaminated with minor amounts of organic materials are separated into an aqueous fraction which is concentrated with respect to the organic contaminants and a water fraction relatively free of the organic contaminants by a method which includes a unique combination of reverse osmosis (RO) and ultrafiltration (UF). The organic contaminants include substances having molecular weights of less than 10,000 which are soluble in the aqueous stream initially but have limited solubility ranges and are precipitated therefrom upon concentration. The contaminated aqueous stream is circulated from the high pressure compartment of a RO unit to the high pressure compartment of an UF unit, then to the low pressure compartment of the UF unit, and then back to the high pressure compartment of the RO unit. The contaminants are concentrated in the high pressure compartment of the RO unit, and a portion thereof is precipitated or otherwise rendered amenable to removal along with the UF concentrate upon passing the RO concentrate from the high pressure compartment of the RO unit to the high pressure compartment of the UF unit. Soluble organic contaminants remaining in the aqueous stream are removed in the UF permeate and are recycled back to the high pressure compartment of the RO unit for further concentration and precipitation, followed by recycling to the high pressure compartment of the UF unit for removal.
-
公开(公告)号：US4448736A
公开(公告)日：1984-05-15
申请号：US381048
申请日：1982-05-24
CPC分类号： B29C47/92 , B29C2947/92104 , B29C2947/922 , B29C2947/926 , B29C2947/92695 , B29C2947/92876 , B29C2947/92904 , B29C47/0014 , B29C47/0021
摘要： The continuous in-line melt flow rate control system (40; 100) is coupled to a mixer/extruder system (10; 97) including a polymer, stabilizer and degradent feeding system (12, 16, 18; 102) supplying mixed materials to the inlet end of an extruder (24; 108) having a die head (26) at the outlet end thereof. The control system (40; 100) is coupled between a rheometer (42; 112) which monitors a slip stream (46; 110) of melt from the extruder (24; 108) and a ratio controller (48; 93) in the feeding system (12, 16, 18; 102). The control system (40; 100) includes a rheometer (42; 112) which monitors the viscosity of the slip stream of melt from the extruder (24; 108) upstream from the die head (26) and converts the monitored viscosity value to a process signal (F) and a controller (44; 84; 101) that compares the process signal (F) with a set point value (A) related to a target melt flow rate and generates a correction signal (B, C, D) when there is a difference between the process signal (F) and the set point value (A). The correction signal (D) is supplied to the degradent ratio controller (48; 93) for adjusting the amount of degradent added to the polymer fed to the extruder (24; 108) in response to the deviation of the process signal (F) from the set point value (A).
摘要翻译： 连续的在线熔体流动速率控制系统（40; 100）耦合到包括聚合物，稳定剂和降解进料系统（12,16,18; 102）的混合器/挤出机系统（10; 97），其将混合材料供应到 挤出机（24; 108）的入口端在其出口端具有模头（26）。 控制系统（40; 100）耦合在流变仪（42; 112）之间，该流变仪监测来自挤出机（24; 108）的熔体的滑流（46; 110）和进料中的比率控制器（48; 93） 系统（12,16,18; 102）。 控制系统（40; 100）包括流变仪（42; 112），其监测来自模具头（26）上游的来自挤出机（24; 108）的熔体滑动流的粘度，并将监测的粘度值转换为 过程信号（F）和控制器（44; 84; 101），其将过程信号（F）与与目标熔体流动速率相关的设定值（A）进行比较，并产生校正信号（B，C，D） 当处理信号（F）和设定值（A）之间存在差异时。 校正信号（D）被提供给降解率控制器（48; 93），用于响应于过程信号（F）与所述挤出机（24; 108）的偏差来调整加入到挤出机（24; 108）中的聚合物的降解量 设定值（A）。
-
公开(公告)号：US3967095A
公开(公告)日：1976-06-29
申请号：US500321
申请日：1974-08-26
摘要： At the general area of a set of BCD counter means, each to contain individual accumulated counts, a system, called a multi-counter register, is generally located for its use that permits the individual reading of the counter means in a selective mode by local readout means at the general area or by a computer at a remote area by the use of a small number of address channels extending from the location of the counter means to the computer. The multi-counter register includes data storage means, having inputs to receive digital information and having outputs to transmit that digital information, sets of gate means that are connected in parallel at their outputs to these inputs of the storage means and that have their inputs connectable to different BCD counter means, means responsive to signals, including signals providing digital information, to enable selectively one of said sets of gate means so that the BCD counter means connected to that enabled set of gate means is operatively connected to said inputs of said data storage means for transfer of digital information from that BCD counter means to said storage means when it can be loaded, said signal-responsive means being operatively connected to said sets of gate means, and means to provide at least one signal to another input of said storage means so that it can be loaded at said inputs, connected to said sets of gate means, with the digital information in that BCD counter means connected to that set of gate means enabled by said signal-responsive means, said signal-providing means being operatively connected to said another input of said storage means. In one construction of the invention, in which there is selection and readout by a computer, the information entered into the storage means of the multi-counter register from one of the counter means is transmittted serially to the computer. Illustratively in that construction the storage means is shift register means. In another construction of the invention the information is transmitted in a parallel manner from the storage means of the multi-counter register to the computer. Illustratively in that construction the storage means includes data latch means. The system, when having computer selection and readout, can include local readout means. In that case, there are means for manual interrogation of any desired counter means and means to prevent the operation of the manual interrogation during the operation by the computer of the multi-counter register through the operations of enabling selected sets of gate means by the signal-responsive means, enabling the storage means to be loaded with information in the counter means, and transmitting the digital information to the computer.
-
-
-
-
-
-
-
-
搜索结果
9 条记录 (耗时 0.022 秒)
