公开(公告)号：US4261719A

公开(公告)日：1981-04-14

申请号：US6535

申请日：1979-01-25

申请人： Akiyoshi Gotoh ,  Taichi Katsuki ,  Takaharu Goto ,  Takumi Mizokawa ,  Noritoshi Sakai

发明人： Akiyoshi Gotoh ,  Taichi Katsuki ,  Takaharu Goto ,  Takumi Mizokawa ,  Noritoshi Sakai

IPC分类号： F25J3/04

CPC分类号： F25J3/04781 ,  F25J3/0429 ,  F25J3/04412 ,  F25J2205/24 ,  F25J2230/40 ,  F25J2240/42 ,  F25J2245/40

摘要： A method of and apparatus for optimizing the rate of material air supply to an air separation plant, for preserving a stable operation of the plant, through stabilizing heat balance and material balance in the plant irrespective of variation in the flow rate of a gas through an expansion turbine incorporated in the plant and the flow rate of product gases so as to optimize the purity and amount of produced gas. The control for the optimization is performed making a ratio of the difference between the flow rate of the material air and the flow rate of the gas through the expansion turbine to the flow rate of the product gases, as an essential factor for the control.

摘要翻译： 一种用于优化空气分离设备的材料空气供应速率的方法和装置，用于通过稳定设备中的热平衡和材料平衡来稳定设备的稳定运行，而不管气体通过 掺入到设备中的膨胀涡轮机和产物气体的流量，以便优化产生的气体的纯度和量。 执行优化的控制，使得材料空气的流量与通过膨胀涡轮机的气体的流量之间的差异与产物气体的流量的比率作为控制的重要因素。

公开(公告)号：US4251248A

公开(公告)日：1981-02-17

申请号：US36015

申请日：1979-05-04

申请人： Takeshi Iyoki ,  Taichi Katsuki ,  Takumi Mizokawa ,  Takaharu Goto

发明人： Takeshi Iyoki ,  Taichi Katsuki ,  Takumi Mizokawa ,  Takaharu Goto

IPC分类号： F25J3/04 ,  G05B7/02

CPC分类号： F25J3/04848 ,  F25J3/0429 ,  F25J3/04412 ,  F25J3/04836 ,  F25J2205/24 ,  F25J2245/40

摘要： A method and apparatus for automatic change of operations in an air separation plant in increasing or decreasing the amounts of products. The present invention is characterized in that intended change values of the flow rate of feed air to be introduced into an air separation plant, the flow rate of liquid air recycled to an upper tower from a lower tower of a rectification column, the flow rate of recycled liquid nitrogen and the flow rate of an expansion turbine gas flowing in an expansion turbine are computed from the values of increased or decreased amounts of products. At the time of initiation of change of the flow rates, the ratio of the flow rate of feed air to the flow rate of the product is increased, and the flow rates of the feed air, recycled liquid air, recycled liquid nitrogen, expansion turbine gas and product are automatically changed to the intended values while gradually reducing the above ratio, and the period ranging from the point at which the intended values are attained to the point when the unstable operation state in the air separation plant is completed is set as the operation change-inhibiting period and the subsequent change of the flow rates is inhibited during this period.

摘要翻译： 一种用于在增加或减少产品量的情况下自动改变空分设备中的操作的方法和装置。 本发明的特征在于，引入空气分离装置的进料空气的流量的期望变化值，从精馏塔的下塔再循环到上塔的液体空气的流量， 再循环的液氮，并且在膨胀涡轮机中流动的膨胀涡轮机气体的流量根据产品数量的增加或减少的值计算。 在开始流量变化时，进料空气的流量与产品的流速的比率增加，进料空气，再循环液体空气，再循环液氮，膨胀涡轮机的流量 气体和产品在逐渐降低上述比率的同时自动变化为预期值，并且从达到预期值的点到空气分离装置中的不稳定运行状态完成的时间段被设定为 在此期间抑制了操作变化抑制期和随后的流量变化。

公开(公告)号：US4034420A

公开(公告)日：1977-07-12

申请号：US671437

申请日：1976-03-29

申请人： Akiyoshi Gotoh ,  Takumi Mizokawa ,  Yukio Sawada ,  Taichi Katsuki

发明人： Akiyoshi Gotoh ,  Takumi Mizokawa ,  Yukio Sawada ,  Taichi Katsuki

IPC分类号： F28F27/02 ,  F25J5/00 ,  F28D17/00

CPC分类号： F25J5/00

摘要： Disclosed is a new and improved method for automatically balancing the temperature of a plurality of reversing heat exchanger units provided in parallel relation with each other. The balancing method comprises the steps of: detecting the temperature in portions of each core of the reversing heat exchangers whenever the flow paths of a feed stream and a heat medium stream are changed over, calculating a mean temperature of each core from the said detected values during the most recent certain changeover period from the current time point, calculating a mean temperature for all exchangers from the said calculated mean temperatures of each core, calculating deviation and deviation trend in temperature of respective exchangers depending on a difference between the mean temperature of each core and the mean temperature of all exchangers, feeding back a system deviation in dependence on the said deviation and deviation trend to control valves for balancing the temperature of reversing heat exchangers.

摘要翻译： 公开了一种用于自动平衡彼此平行设置的多个反向热交换器单元的温度的新的和改进的方法。 平衡方法包括以下步骤：每当切换进料流和热介质流的流路时，检测反向热交换器的每个芯部分的温度，根据所述检测值计算每个核心的平均温度 在从当前时间点开始的最近的某个转换期间，根据所计算的每个核心的平均温度计算所有交换器的平均温度，根据每个交换机的平均温度之间的差异计算各个交换机的温度的偏差和偏差趋势 核心和所有交换器的平均温度，根据所述偏差和偏差趋势反馈系统偏差，以控制用于平衡反向热交换器的温度的阀。