SU493529A1 - Device for automated control of pulp bleaching stage - Google Patents
Device for automated control of pulp bleaching stageInfo
- Publication number
- SU493529A1 SU493529A1 SU2042846A SU2042846A SU493529A1 SU 493529 A1 SU493529 A1 SU 493529A1 SU 2042846 A SU2042846 A SU 2042846A SU 2042846 A SU2042846 A SU 2042846A SU 493529 A1 SU493529 A1 SU 493529A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- automated control
- bleaching stage
- pulp bleaching
- pulp
- controller
- Prior art date
Links
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- Paper (AREA)
Description
нени м рН, умножаетс прибором 4 и далее складываетс на приборе 5 алгебраических операций с пневмосигналом, соответствующим изменени м ОВП. Суммарный сигнал , характеризующий ОВП и рН, поступает на регул тор 6 контура. Регул тор контура управл ет клапаном 1 расхода отбеливающего реагента. Задание регул тору контура вл етс переменной величиной и измен етс счетно-решающим устройством 7, реализующим алгоритм расчета установочного значени функции сигналов ОВП и рН, от параметров процесса: расхода массы (G), температуры (Т), жесткости целлюлозы (Ж) на входе ступени при условии получени стабилизированной величины белизны (Б) целлюлозы на выходе ступени.pH value, multiplied by the device 4 and further added up on the device 5 algebraic operations with a pneumocompany corresponding to the changes in the ORP. The total signal characterizing the ORP and pH, is fed to the controller 6 of the circuit. The loop controller controls the bleaching agent consumption valve 1. The setting of the contour controller is variable and is changed by the counting device 7, which implements the algorithm for calculating the set value of the function of the ORP signals and pH, from process parameters: mass flow (G), temperature (T), pulp hardness (G) at the input steps, provided that the whiteness (B) of the pulp at the outlet of the step is stabilized.
Предмет изобретени Subject invention
Устройство дл автоматизированного управлени ступенью отбелки целлюлозы, включающее клапан расхода отбеливающего реагента и регулирующий контур с измерител ми окислительно-восстановительного потенциала и рН, прибором алгебраических операций и регул тором контура, отличающеес A device for automated control of the pulp bleaching stage, including a bleaching agent consumption valve and a control loop with redox potential and pH meters, an algebraic instrument and a loop controller, characterized by
тем, что, с целью повыщени точности регулировани белизны целлюлозы при отбелке ее двуокисью хлора, оно имеет счетно-рещающее устройство с подключенными к нему датчиками параметров процесса, подключенное коthe fact that, in order to increase the accuracy of the regulation of the whiteness of cellulose in bleaching it with chlorine dioxide, it has a calculating device with process sensors connected to it, connected to
входу регул тора контура, выход которого соединен с клапаном расхода отбеливающего реагента.the input of the contour controller, the output of which is connected to the flow valve of the bleaching agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2042846A SU493529A1 (en) | 1974-07-01 | 1974-07-01 | Device for automated control of pulp bleaching stage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2042846A SU493529A1 (en) | 1974-07-01 | 1974-07-01 | Device for automated control of pulp bleaching stage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU493529A1 true SU493529A1 (en) | 1975-11-28 |
Family
ID=20590622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU2042846A SU493529A1 (en) | 1974-07-01 | 1974-07-01 | Device for automated control of pulp bleaching stage |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU493529A1 (en) |
-
1974
- 1974-07-01 SU SU2042846A patent/SU493529A1/en active
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