Chemical reactor feed control
    8.
    发明授权
    Chemical reactor feed control 失效
    化学反应堆饲料控制

    公开(公告)号:US5586051A

    公开(公告)日:1996-12-17

    申请号:US393769

    申请日:1995-02-24

    摘要: In a process for manufacture of a chemical product, a reactive hydrocarbon feedstream, which varies in composition of the reactive component, is combined with a compatible but unreactive hydrocarbon feedstream to form a blended hydrocarbon stream which is then combined with a reactive alcohol stream of stable concentration of its reactive component, to form a complete feedstream to the reactor. A desired ratio of relative reactant concentrations in the complete feedstream to the reactor is maintained by a control system which maintains a stable concentration in the blended hydrocarbon stream by manipulating flow rate of the unreactive hydrocarbon feedstream responsive to a concentration measurement in the blended hydrocarbon stream. Flow ratio control is then applied to maintain a desired ratio of reactants in the complete feedstream for the reactor by calculating a flow ratio of the blended hydrocarbon stream to the reactive alcohol feedstream. The calculated flow ratio is the process variable input to a manually set ratio controller which manipulates the flow rate of the reactive alcohol feedstream responsive to the flow ratio.

    摘要翻译: 在制造化学产品的方法中,将反应性组分的组成变化的反应性烃进料流与相容但不活泼的烃进料流组合以形成混合的烃流,然后将其与稳定的反应性醇流 其反应组分的浓度,以形成到反应器的完整进料流。 通过控制系统保持完整进料流中反应物的相对反应物浓度的期望比例,其通过响应于混合烃流中的浓度测量来操纵非反应性烃进料流的流速来保持混合烃流中的稳定浓度。 然后施加流量比控制以通过计算混合的烃流与反应性醇进料流的流量比来维持反应器的完整进料流中反应物的期望比例。 计算的流量比是输入到手动设定比率控制器的过程变量,其根据流量比操纵反应性醇进料流的流量。

    Mixture control apparatus and mixture control method
    9.
    发明授权
    Mixture control apparatus and mixture control method 失效
    混合控制装置和混合控制方法

    公开(公告)号:US4621927A

    公开(公告)日:1986-11-11

    申请号:US694995

    申请日:1985-01-25

    申请人: Kazuo Hiroi

    发明人: Kazuo Hiroi

    IPC分类号: B01F3/02 B01F15/04 G05D11/13

    摘要: A mixture control apparatus controls a flow rate of a second fluid to be mixed with a first fluid so as to prepare a third fluid having a predetermined concentration. A set point variable of the flow rate of the second fluid is calculated in accordance with the flow rate of the third fluid so as to improve controllabilty of the apparatus. A gain correction circuit calculates a gain correction quantity using the flow rate of the third fluid. A feed forward circuit calculates a feed forward control component. A feedback circuit calculates a feedback control component. The set point variable of the flow rate of the second fluid is calculated in accordance with the feed forward control component and the feedback control component. The flow rate of the second fluid is controlled to coincide with this set point variable.

    摘要翻译: 混合控制装置控制与第一流体混合的第二流体的流量,以制备具有预定浓度的第三流体。 根据第三流体的流量计算第二流体的流量的设定点变量,以提高装置的可控性。 增益校正电路使用第三流体的流量来计算增益校正量。 前馈电路计算前馈控制部件。 反馈电路计算反馈控制部件。 根据前馈控制部件和反馈控制部件计算第二流体的流量的设定点变量。 控制第二流体的流量与该设定点变量一致。