发明名称 Distillation control computer
摘要 <p>1,021,470. Electric analog calculating. ELECTRONIC ASSOCIATES Inc. Jan. 2, 1964 [Jan. 2, 1963], No. 278/64. Heading G4G. [Also in Division G1] In a distillation apparatus comprising a fractionating column 10, an air-cooled condenser 20, and an accumulator 26 from which a proportion of the condensate is drawn, 32, and recirculated, a computer operated valve 34, controls the recirculated condensate (external reflux) to maintain a required internal reflux rate through the column 10, the operation of the computer 36 depending upon temperatures measured by thermocouples 38, 40 in the external reflux loop 18, 32. The system compensates for ambient changes in the condenser environment. The computer output P represents the square of the required value of external reflux rate appropriate, at the temperature difference between 38, 40, to the required internal reflux rate, and this is compared at 42 with the square of the actual external reflux rate measured by a flowmeter 44, the error being used to control the valve 34. The analogue computer includes a thermocouple amplifier 46 (Fig. 2, not shown) and generates a signal P = R 1 2[1 -f(K T)], where T is the measured temperature difference and R 1 is the required steady state value of the internal reflux rate of the column.</p>
申请公布号 GB1021470(A) 申请公布日期 1966.03.02
申请号 GB19640000278 申请日期 1964.01.02
申请人 ELECTRONIC ASSOCIATES, INC. 发明人
分类号 B01D3/42;G06G7/56 主分类号 B01D3/42
代理机构 代理人
主权项
地址