CN112569883A - Online adjusting and controlling system and method for acid liquid and alkali liquid mixed pH value - Google Patents
Online adjusting and controlling system and method for acid liquid and alkali liquid mixed pH value Download PDFInfo
- Publication number
- CN112569883A CN112569883A CN202011216762.7A CN202011216762A CN112569883A CN 112569883 A CN112569883 A CN 112569883A CN 202011216762 A CN202011216762 A CN 202011216762A CN 112569883 A CN112569883 A CN 112569883A
- Authority
- CN
- China
- Prior art keywords
- value
- liquor
- acid
- alkali
- reactor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0086—Processes carried out with a view to control or to change the pH-value; Applications of buffer salts; Neutralisation reactions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00177—Controlling or regulating processes controlling the pH
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
The invention discloses an online regulating and controlling system and a regulating and controlling method for the mixed pH value of acid liquor and alkali liquor, which comprises a reactor and a program controller; the top of the reactor is provided with an acid liquid inlet and an alkali liquid inlet; an acid liquor proportion regulating valve and an alkaline liquor proportion regulating valve are respectively arranged on a liquid inlet pipeline connecting the acid liquor inlet and the alkaline liquor inlet; a pH value sampling detection device is arranged in the reactor and is connected with the program controller; and the program controller is respectively connected with the acid liquor proportion regulating valve and the alkaline liquor proportion regulating valve, so that the opening of the acid liquor proportion regulating valve and/or the alkaline liquor proportion regulating valve can be regulated and controlled on line. The method has the advantages of accurate and timely judgment of the end point pH value, high regulation sensitivity of a feedback regulation mechanism, more accurate regulation quantity and capability of effectively preventing the overshoot phenomenon, so that the actually measured pH value is always maintained in the fluctuation interval range, and the deviation from the end point pH value is favorably reduced.
Description
Technical Field
The invention relates to the technical field of solution pH value control, in particular to an online regulating and controlling system and a regulating and controlling method for the mixed pH value of acid liquor and alkali liquor.
Background
The adjustment of pH is one of the most common technical means in chemical processes, and many chemical reactions are carried out within a specific pH range. Therefore, in order to increase the yield of the product, improve the product quality and ensure the production safety, the pH regulation is required to be accurately carried out in the reaction process.
However, in the industrial production process, because the amount of the solution in the reaction kettle is too much, the conditions of slow pH value control feedback speed, lag and the like often exist, the phenomenon of serious pH value deviation is emphasized, the balance of a control system is influenced, the control failure is caused, especially for online continuous pH value regulation, the control difficulty is higher, the overshoot phenomenon occurs sometimes, and the normal operation of the industrial production is seriously influenced.
Disclosure of Invention
The invention mainly solves the technical problem of providing an online regulating and controlling system and a regulating and controlling method for the mixed pH value of acid liquor and alkali liquor, and can solve the problems of the existing control method.
In order to solve the technical problems, the invention adopts a technical scheme that: providing an on-line regulating and controlling system for the mixed pH value of acid liquor and alkali liquor, which comprises a reactor and a program controller; the top of the reactor is provided with an acid liquid inlet and an alkali liquid inlet; an acid liquor proportion regulating valve and an alkaline liquor proportion regulating valve are respectively arranged on a liquid inlet pipeline connected with the acid liquor inlet and the alkaline liquor inlet; a pH value sampling detection device is arranged in the reactor, is connected with the program controller and feeds back the detected pH value to the program controller; the program controller is respectively connected with the acid liquor proportion regulating valve and the alkaline liquor proportion regulating valve, so that the opening of the acid liquor proportion regulating valve and/or the alkaline liquor proportion regulating valve can be regulated and controlled on line.
In a preferred embodiment of the present invention, the pH sampling and detecting device comprises a sampling tube, a suction tube and a pH meter, wherein the sampling tube is installed at the middle lower part of the reactor, the suction tube is connected with the liquid outlet of the sampling tube, and the detection end of the pH meter is installed at the liquid outlet end of the suction tube.
In a preferred embodiment of the present invention, the acid solution and the alkali solution are rotationally mixed in the reactor, the sampling tube is installed along a tangent of the rotation direction, and the liquid inlet of the sampling tube is arranged in a counterclockwise direction of the rotation direction.
In a preferred embodiment of the present invention, the sampling tube is a diameter-variable tube, the diameter of the liquid inlet of the sampling tube is larger than that of the liquid outlet of the sampling tube, and the diameter of the tube body is gradually reduced from the liquid inlet to the liquid outlet.
In a preferred embodiment of the present invention, the suction tube is installed along a tangent line of the rotation direction, a liquid inlet of the suction tube is connected to a liquid outlet of the sampling tube, a liquid outlet of the suction tube is a bevel port and faces the wall surface of the reactor, and a detection end of the pH meter is located at the bevel port.
In a preferred embodiment of the present invention, the on-line regulating system further comprises flow meters, and the flow meters are respectively installed on the liquid inlet pipeline of the acid solution and the liquid inlet pipeline of the alkali solution.
In a preferred embodiment of the present invention, the program controller is a PLC controller.
In a preferred embodiment of the present invention, a stirrer is further installed in the reactor, so that the acid solution and the alkali solution are rotationally mixed in the reactor.
In order to solve the technical problem, the invention adopts another technical scheme that: the on-line regulating and controlling method for the mixed pH value of the acid liquor and the alkali liquor is provided, and the on-line regulating and controlling system comprises the following steps:
(1) setting parameters: presetting the pH value of alkali liquor, the pH value of acid liquor, a terminal pH value and a fluctuation range thereof in the program controller, and dividing the fluctuation range of the terminal pH value into a plurality of continuous intervals;
(2) regulation and control of initial pH value: before mixing begins, calculating the flow of the alkali liquor and the flow of the acid liquor required for reaching the end point pH value according to the pH value of the alkali liquor, the pH value of the acid liquor and the end point pH value, and then opening the acid liquor proportion regulating valve and the alkali liquor proportion regulating valve to enable the flow of the acid liquor and the alkali liquor passing through the flow meter to reach the calculated values;
(3) real-time online regulation and control of pH value: the pH value sampling detection device detects the initial pH value of the solution in the reactor, detects the pH value in the mixing process in real time on line, feeds the pH value back to the program controller, compares the received pH value with the end point pH value, controls the flow of the flowmeter of the acid liquor to be smaller than that of the flowmeter of the alkali liquor if the pH value is lower than the end point pH value, judges the section where the pH value is located, and regulates and controls the opening of the proportional control valve on the corresponding liquid inlet pipeline; and vice versa; and if the pH value is equal to the end point pH value, controlling the flow of the flowmeter of the acid liquor to be equal to the flow of the flowmeter of the alkali liquor.
In a preferred embodiment of the invention, the end point pH is within the interval.
The invention has the beneficial effects that: according to the on-line regulating system and the regulating method for the acid liquid and alkali liquid mixed pH value, the pH value sampling detection device is installed, the program controller and the end point pH value interval are divided, so that the end point pH value is accurately and timely judged, the regulation sensitivity of a feedback regulation mechanism is high, the regulation quantity is more accurate, the overshoot phenomenon can be effectively prevented, the actually measured pH value is always maintained in the fluctuation interval range, and the deviation of the actually measured pH value and the end point pH value is favorably reduced.
Drawings
FIG. 1 is a schematic perspective view of a preferred embodiment of an online pH control system for acid and alkali solutions according to the present invention;
FIG. 2 is a schematic diagram of the regulation principle of the online regulation method for the pH value of the mixture of acid liquor and alkali liquor of the invention;
the parts in the drawings are numbered as follows: 1. the device comprises a reactor, 2, a program controller, 3, an acid liquid inlet, 4, an alkali liquid inlet, 5, an acid liquid container, 6, an alkali liquid container, 7, a flow meter, 8, an acid liquid proportion adjusting valve, 9, an alkali liquid proportion adjusting valve, 10, a pH value sampling detection device, 11, a sampling pipe, 12, a suction pipe, 13, a pH meter and 14, and a stirrer.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
Referring to fig. 1 and 2, an embodiment of the present invention includes:
the invention discloses an on-line regulating and controlling system for the mixed pH value of acid liquor and alkali liquor, which comprises a reactor 1 and a program controller 2.
The top of the reactor 1 is provided with an acid liquid inlet 3 and an alkali liquid inlet 4, the acid liquid inlet 3 is connected with an acid liquid container 5 through a liquid inlet pipeline, and acid liquid is conveyed into the reactor 1; the alkali liquor inlet 4 is connected with an alkali liquor container 6 through a liquid inlet pipeline, and conveys the alkali liquor into the reactor 1. And a liquid inlet pipeline connected with the acid liquid inlet 3 is provided with a flow meter 7 and an acid liquid proportion regulating valve 8, and a liquid inlet pipeline connected with the alkali liquid inlet 4 is provided with a flow meter 7 and an alkali liquid proportion regulating valve 9.
The program controller 2 is a PLC controller, and is connected to the acid liquor proportion regulating valve 8 and the alkaline liquor proportion regulating valve 9, so as to regulate and control the opening degrees of the acid liquor proportion regulating valve 8 and the alkaline liquor proportion regulating valve 9 in real time according to the pH value of the mixed liquor obtained by feedback.
The reactor 1 is internally provided with a pH value sampling detection device 10, and the pH value sampling detection device 10 is connected with the program controller 2 and is used for detecting the pH value of the mixed solution in the reactor 1 and feeding back the pH value to the program controller 2 in real time.
The reactor 1 is also internally provided with a stirrer 14, and the stirrer 14 is not contacted with the pH value sampling and detecting device 10. The stirring device 14 is used for stirring and mixing the acid liquor and the alkali liquor entering the reactor 1, and the reactor 1 is of a cylindrical structure, so that the stirrer 14 rotates along a fixed direction, the mixed liquor in the reactor 1 is rotated and mixed, and the mixing effect is improved.
Specifically, the pH value sampling and detecting device 10 includes a sampling tube 11, a suction tube 12 and a pH meter 13, wherein the sampling tube 11 is a diameter-variable tube, and is installed at the middle lower part of the reactor 1, the diameter of the liquid inlet is larger than that of the liquid outlet, and the diameter of the tube body is gradually reduced from the liquid inlet to the liquid outlet. The sampling tube 11 is installed along the tangent line of the rotating direction, and the liquid inlet of the sampling tube is arranged in the anticlockwise direction of the rotating direction, so that the rotating mixed liquid flows in from the liquid inlet of the sampling tube 11. By the design of the variable diameter structure of the sampling tube 11 and the selection of the installation position, a larger amount of the mixed liquid can enter the sampling tube 11.
The suction pipe 12 is installed along the tangent line of the rotating direction, the liquid inlet of the suction pipe is connected with the liquid outlet of the sampling pipe 11, the liquid outlet of the suction pipe is an inclined plane opening and faces the wall surface of the reactor 1, and the detection end of the pH meter 13 is located at the inclined plane opening of the suction pipe 12. Through the design of the installation positions of the sampling tube 11 and the suction tube 12, the mixed solution in the reactor 1 sequentially enters the sampling tube 11 and the suction tube 12 under the action of rotational inertia force and flows out from the outlet of the inclined plane opening structure of the suction tube 12, the liquid flowing out in this way is a fresh solution in the neutralization reaction process, the pH value of the fresh solution obtained by the measurement of the pH meter 13 is the latest final value of the reaction, the pH value of the whole system can be regulated and controlled more timely and accurately through the latest final value, the control of the pH value of the system is more accurate and sensitive, and the overshoot phenomenon can be effectively prevented.
The online regulating and controlling method for the mixed pH value of the acid liquor and the alkali liquor by adopting the online regulating and controlling system comprises the following steps:
(1) setting parameters: the pH value of the alkali liquor and the pH value of the acid liquor are preset in the program controller, and the program controller 1 can judge the required amount of the acid liquor or the alkali liquor according to the pH value of the alkali liquor and the pH value of the acid liquor, so that the inflow amount of the acid liquor or the alkali liquor is accurately and sensitively controlled;
presetting a required end point pH value and a fluctuation range thereof in the program controller, and dividing the fluctuation range of the end point pH value into a plurality of continuous intervals, wherein the end point pH value is positioned in the interval range; the fluctuation range of the pH value of the whole end point is set in a partition mode, the input amount of the acid liquor or the alkali liquor is adjusted according to the difference between the pH value and the end point value in each interval, the sensitivity of solution inflow control is improved, the feedback speed of the pH value is improved, and therefore the end point deviation of the pH value is reduced;
(2) regulation and control of initial pH value: before mixing begins, calculating the flow of the alkali liquor and the flow of the acid liquor required for reaching the end point pH value according to the pH value of the alkali liquor, the pH value of the acid liquor and the end point pH value, and then opening the acid liquor proportion regulating valve and the alkali liquor proportion regulating valve to enable the flow of the acid liquor and the alkali liquor passing through the flow meter to reach the calculated values;
(3) real-time online regulation and control of pH value: the pH value sampling detection device detects the initial pH value of the solution in the reactor, detects the pH value in the mixing process in real time on line, and feeds the pH value back to the program controller 2, the program controller 2 compares the pH value received each time with the terminal pH value, if the pH value is lower than the terminal pH value, the flow of the acid liquor flowmeter is controlled to be smaller than that of the alkali liquor flowmeter, the interval where the received pH value is located is judged, and the opening degree of the acid liquor proportion regulating valve 8 and/or the alkali liquor proportion regulating valve 9 on the corresponding liquid inlet pipeline is regulated and controlled according to the position of the interval where the received pH value is located; on the contrary, if the pH value is higher than the end point pH value, the flow of the flow meter of the acid liquor is regulated and controlled to be larger than that of the flow meter of the alkali liquor, the interval where the received pH value is located is judged, and the opening degree of the proportional regulating valve on the corresponding liquid inlet pipeline is regulated and controlled through the flow meter; if the pH value is equal to the end point pH value, controlling the opening of the acid liquor proportion regulating valve to be equal to the opening of the alkaline liquor proportion regulating valve, so that the liquid inlet amount of the acid liquor is equal to the liquid inlet amount of the alkaline liquor;
in the whole acid-base neutralization reaction process, the adjusting process is repeated, so that the p H value of the mixed liquid in the reactor is regulated and controlled in real time, and the phenomenon of over-regulation is prevented.
By the regulation and control method, the inflow of the acid liquor and the alkali liquor can be sensitively controlled, the feedback speed of the pH value is increased, and the pH value terminal deviation is reduced.
Specifically, the pH end point value is set to be 4.8, and the fluctuation range of the pH end point value is set to be 4-5.5; the following control modes are set in the PLC, and are regulated and controlled on line:
(Note: fully open
The invention relates to an online regulating system and a regulating method for the mixed pH value of acid liquor and alkali liquor, which have the following advantages:
1. through the installation design of the pH value sampling detection device, the latest end point pH value of the reaction of the acid liquor and the alkali liquor in the reactor can be accurately and timely measured, the speed and accuracy of pH value feedback are improved, and the regulation and control effect is favorably improved;
2. through the design of a process controller and division of the terminal pH value interval, the regulation and control quantity of the acid liquor or the alkali liquor is more accurate and sensitive, and the phenomenon of over regulation can be effectively prevented;
3. the online regulating and controlling system has the advantages that the pH value is accurately and timely judged, the regulating sensitivity of the feedback regulating mechanism is high, the regulating and controlling quantity is more accurate, and the overshoot phenomenon can be effectively prevented, so that the actually measured pH value is always maintained in the fluctuation interval range, and the deviation from the terminal pH value is favorably reduced.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. An on-line regulating and controlling system for the mixed pH value of acid liquor and alkali liquor is characterized by comprising a reactor and a program controller; the top of the reactor is provided with an acid liquid inlet and an alkali liquid inlet; an acid liquor proportion regulating valve and an alkaline liquor proportion regulating valve are respectively arranged on a liquid inlet pipeline connected with the acid liquor inlet and the alkaline liquor inlet; a pH value sampling detection device is arranged in the reactor, is connected with the program controller and feeds back the detected pH value to the program controller; the program controller is respectively connected with the acid liquor proportion regulating valve and the alkaline liquor proportion regulating valve, so that the opening of the acid liquor proportion regulating valve and/or the alkaline liquor proportion regulating valve can be regulated and controlled on line.
2. The system for online regulation and control of the pH value of a mixture of acid liquor and alkali liquor as claimed in claim 1, wherein the pH value sampling and detecting device comprises a sampling tube, a suction tube and a pH meter, wherein the sampling tube is installed at the middle lower part of the reactor, the suction tube is connected with a liquid outlet of the sampling tube, and a detection end of the pH meter is installed at a liquid outlet end of the suction tube.
3. The system for online adjustment and control of the pH value of a mixture of acid liquor and alkali liquor as claimed in claim 2, wherein the acid liquor and alkali liquor are rotationally mixed in the reactor, the sampling tube is installed tangentially to the rotational direction, and the liquid inlet is arranged in the counterclockwise direction of the rotational direction.
4. The system for on-line regulation of pH of a mixture of acid and alkali liquids as claimed in claim 3, wherein the sampling tube is a diameter-variable tube, the diameter of its inlet is larger than that of its outlet, and the diameter of its tube body decreases gradually from the inlet to the outlet.
5. The system for online regulation and control of pH of acid and alkali solutions as claimed in claim 4, wherein the suction tube is installed tangentially along the rotation direction, its inlet is connected to the outlet of the sampling tube, its outlet is a bevel port and faces the wall of the reactor, and the detection end of the pH meter is located at the bevel port.
6. The system for online regulation and control of the pH value of a mixture of acid liquor and alkali liquor as claimed in claim 5, wherein the system further comprises flow meters, and the flow meters are respectively installed on the liquid inlet pipeline of the acid liquor and the liquid inlet pipeline of the alkali liquor.
7. The system for online adjustment and control of pH of acid and alkali liquor mixture as claimed in claim 1, wherein the program controller is a PLC controller.
8. The system for online adjustment and control of the pH value of a mixture of an acid solution and an alkali solution as claimed in claim 5, wherein an agitator is further installed in the reactor, so that the acid solution and the alkali solution are rotationally mixed in the reactor.
9. An online regulating and controlling method for the mixed pH value of acid liquor and alkali liquor, which is characterized in that the online regulating and controlling system of any one of claims 1 to 8 is adopted, and comprises the following steps:
(1) setting parameters: presetting the pH value of alkali liquor, the pH value of acid liquor, a terminal pH value and a fluctuation range thereof in the program controller, and dividing the fluctuation range of the terminal pH value into a plurality of continuous intervals;
(2) regulation and control of initial pH value: before mixing begins, calculating the flow of the alkali liquor and the flow of the acid liquor required for reaching the end point pH value according to the pH value of the alkali liquor, the pH value of the acid liquor and the end point pH value, and then opening the acid liquor proportion regulating valve and the alkali liquor proportion regulating valve to enable the flow of the acid liquor and the alkali liquor passing through the flow meter to reach the calculated values;
(3) real-time online regulation and control of pH value: the pH value sampling detection device detects the initial pH value of the solution in the reactor, detects the pH value in the mixing process in real time on line, feeds the pH value back to the program controller, compares the received pH value with the end point pH value, controls the flow of the flowmeter of the acid liquor to be smaller than that of the flowmeter of the alkali liquor if the pH value is lower than the end point pH value, judges the section where the pH value is located, and regulates and controls the opening of the proportional control valve on the corresponding liquid inlet pipeline; and vice versa; and if the pH value is equal to the end point pH value, controlling the flow of the flowmeter of the acid liquor to be equal to the flow of the flowmeter of the alkali liquor.
10. The method for online controlling the pH of a mixture of an acid solution and an alkali solution according to claim 6, wherein the end-point pH is within the interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011216762.7A CN112569883B (en) | 2020-11-04 | 2020-11-04 | Online adjusting and controlling system and method for acid liquor and alkali liquor mixed pH value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011216762.7A CN112569883B (en) | 2020-11-04 | 2020-11-04 | Online adjusting and controlling system and method for acid liquor and alkali liquor mixed pH value |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112569883A true CN112569883A (en) | 2021-03-30 |
| CN112569883B CN112569883B (en) | 2022-07-22 |
Family
ID=75120266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011216762.7A Active CN112569883B (en) | 2020-11-04 | 2020-11-04 | Online adjusting and controlling system and method for acid liquor and alkali liquor mixed pH value |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112569883B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114115374A (en) * | 2021-11-30 | 2022-03-01 | 宝钢化工湛江有限公司 | System and method for regulating and controlling pH value of dephenolizing device |
| CN115072763A (en) * | 2021-04-29 | 2022-09-20 | 阮氏化工（常熟）有限公司 | Device and method for producing basic copper nitrate by using copper-containing stripping and hanging liquid |
| CN115703647A (en) * | 2021-08-06 | 2023-02-17 | 阮氏化工（常熟）有限公司 | Method for continuously producing basic copper carbonate by using acidic etching waste liquid |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5987094A (en) * | 1982-11-11 | 1984-05-19 | Mitsubishi Gas Chem Co Inc | Waste water disposal |
| JPH05257541A (en) * | 1992-03-13 | 1993-10-08 | Hitachi Ltd | Ph controller |
| CN1493873A (en) * | 2002-11-02 | 2004-05-05 | 中国石油化工股份有限公司 | Device and method of measuring PH value |
| CN202017009U (en) * | 2011-01-29 | 2011-10-26 | 浙江大学 | Denitrification type methane anaerobic oxidized bacterium enriching system based on automatic control |
| CN202808365U (en) * | 2012-08-13 | 2013-03-20 | 瓮福（集团）有限责任公司 | Device for controlling power of hydrogen of ammonium phosphate slurry |
| CN203030273U (en) * | 2012-11-16 | 2013-07-03 | 郑州长城科工贸有限公司 | Automatic solution adding and temperature regulating reactor |
| CN104090597A (en) * | 2014-07-22 | 2014-10-08 | 长沙思辰仪器科技有限公司 | Intelligent pH measurement and control system and pH measurement and control method |
| CN209210457U (en) * | 2018-10-18 | 2019-08-06 | 江苏和顺环保有限公司 | A kind of Industry Waste concentrated acid secure processing device |
| CN209841448U (en) * | 2018-10-23 | 2019-12-24 | 深圳市新创材料科技有限公司 | Establish real-time sampling device outside reation kettle |
-
2020
- 2020-11-04 CN CN202011216762.7A patent/CN112569883B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5987094A (en) * | 1982-11-11 | 1984-05-19 | Mitsubishi Gas Chem Co Inc | Waste water disposal |
| JPH05257541A (en) * | 1992-03-13 | 1993-10-08 | Hitachi Ltd | Ph controller |
| CN1493873A (en) * | 2002-11-02 | 2004-05-05 | 中国石油化工股份有限公司 | Device and method of measuring PH value |
| CN202017009U (en) * | 2011-01-29 | 2011-10-26 | 浙江大学 | Denitrification type methane anaerobic oxidized bacterium enriching system based on automatic control |
| CN202808365U (en) * | 2012-08-13 | 2013-03-20 | 瓮福（集团）有限责任公司 | Device for controlling power of hydrogen of ammonium phosphate slurry |
| CN203030273U (en) * | 2012-11-16 | 2013-07-03 | 郑州长城科工贸有限公司 | Automatic solution adding and temperature regulating reactor |
| CN104090597A (en) * | 2014-07-22 | 2014-10-08 | 长沙思辰仪器科技有限公司 | Intelligent pH measurement and control system and pH measurement and control method |
| CN209210457U (en) * | 2018-10-18 | 2019-08-06 | 江苏和顺环保有限公司 | A kind of Industry Waste concentrated acid secure processing device |
| CN209841448U (en) * | 2018-10-23 | 2019-12-24 | 深圳市新创材料科技有限公司 | Establish real-time sampling device outside reation kettle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115072763A (en) * | 2021-04-29 | 2022-09-20 | 阮氏化工（常熟）有限公司 | Device and method for producing basic copper nitrate by using copper-containing stripping and hanging liquid |
| CN115703647A (en) * | 2021-08-06 | 2023-02-17 | 阮氏化工（常熟）有限公司 | Method for continuously producing basic copper carbonate by using acidic etching waste liquid |
| CN114115374A (en) * | 2021-11-30 | 2022-03-01 | 宝钢化工湛江有限公司 | System and method for regulating and controlling pH value of dephenolizing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112569883B (en) | 2022-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112569883B (en) | Online adjusting and controlling system and method for acid liquor and alkali liquor mixed pH value | |
| EP0304093B1 (en) | Liquid measuring apparatus | |
| EP0290889B1 (en) | Method of and apparatus for measuring liquid | |
| CA1115585A (en) | Method and apparatus suitable for the preparation of agx-emulsions | |
| EP3953668A1 (en) | Calibration method for liquid flowmeter | |
| US10509376B2 (en) | Method for controlling a process | |
| Shinskey | Control of pH | |
| CN208082381U (en) | A kind of automatic medicament feeding system for waste water control | |
| JP2020011230A (en) | Liquid mixing device with electronic control of high dynamic regulation and operating method thereof | |
| CN109925787A (en) | A kind of Intelligent medicine adding device for coal slime dewatering | |
| CN209362347U (en) | Mixing arrangement based on density adjusting | |
| CN206045978U (en) | A kind of sulfur dioxide liquid automatic feeding system | |
| CN110964902A (en) | Continuous uniform acid leaching device for oxidized ore | |
| CN204881256U (en) | Water admixing device and hot -water heating system | |
| CN210397815U (en) | Constant-temperature water washing device | |
| CN214252257U (en) | Water sample pH adjusting device | |
| US5564305A (en) | Apparatus and method for controlling the rate of flow of a liquid | |
| CN106943939A (en) | A kind of cane sugar manufacture technical process phosphoric acid add-on system | |
| CN219217580U (en) | Be applied to on-line monitoring adjusting device of raw water turbidity of pilot scale water factory | |
| CN214530888U (en) | Intelligent material water adding system | |
| CN109464941A (en) | A kind of full-automatic adder-subtractor and add alkali method | |
| CN106696111A (en) | Flow online automatic regulating system and method for silicone adhesive continuous production | |
| US6269831B1 (en) | Precision volumetric measuring and mixing apparatus | |
| CN202543284U (en) | Automatic control system for rare earth precipitation process | |
| CN219291351U (en) | PH adjusting structure for synthesis reaction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |