CN112316851A - High-precision liquid phase reaction PH adjusting device and PH adjusting method - Google Patents
High-precision liquid phase reaction PH adjusting device and PH adjusting method Download PDFInfo
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- CN112316851A CN112316851A CN202011308677.3A CN202011308677A CN112316851A CN 112316851 A CN112316851 A CN 112316851A CN 202011308677 A CN202011308677 A CN 202011308677A CN 112316851 A CN112316851 A CN 112316851A
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- 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
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/008—Feed or outlet control devices
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- 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
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- 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
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- 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
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
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- 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
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
- B01J4/002—Nozzle-type elements
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- 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
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/02—Feed or outlet devices; Feed or outlet control devices for feeding measured, i.e. prescribed quantities of reagents
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- 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
- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest
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- 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
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Abstract
The invention discloses high-precision liquid phase reaction PH regulating equipment, which comprises a liquid storage device, a liquid conveying pipeline, a liquid injection device, a control device, a testing device and a liquid phase reaction kettle, wherein one end of the liquid conveying pipeline is communicated with the liquid storage device, the other end of the liquid conveying pipeline is communicated with the liquid injection device, the liquid injection device is installed in the liquid phase reaction kettle, one end of the testing device is positioned in the liquid phase reaction kettle, the other end of the testing device is connected with the control device, the testing device comprises a first PH tester and a second PH tester, a testing probe of the first PH tester is arranged in the middle part below the inner part of the reaction kettle, and a testing probe of the second PH tester is arranged on the side surface above the inner part of the reaction kettle and below the reaction; the first PH tester and the second PH tester are both connected with the controller. The controller can comprehensively process signals of the two PH testers, and further performs pulse control on the pulse electromagnetic valve, so that the acidic regulating solution or the alkaline regulating solution is injected into a reaction system in a pulse mode at certain interval time and single injection amount.
Description
Technical Field
The invention belongs to the technical field of chemical production, and particularly relates to high-precision liquid-phase reaction PH adjusting equipment and a PH adjusting method.
Background
The pH is a number representing the degree of acidity or alkalinity of the solution. Many liquid phase chemical reactions have stringent pH requirements that affect not only the rate and extent of conversion, but also the path of the reaction, and hence the distribution of the product, for certain organic chemical reactions. Therefore, the accurate control of the pH value of some liquid-phase reaction systems has very important significance for guaranteeing the conversion rate and the selectivity of the reaction.
The pH value of the liquid phase reaction system can be adjusted manually or automatically by a pH adjusting device. The method for manually adjusting the pH value is that after the pH value of a reaction system is tested by using manual test paper, the addition amounts of acid and alkali regulators are determined according to manual calculation or experience, and then a certain amount of acid and alkali regulators are manually added into the reaction system to enable the reaction system to meet the production requirements. This method is not only inefficient, but also is greatly affected by human factors in determining the amounts of acid and base regulators to be added and in the process of adding the regulators, and may cause large errors. Therefore, manual PH adjustment cannot meet the needs of modern industrial development, and it is a great trend to develop automatic PH adjustment devices.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide high-precision liquid-phase reaction PH adjusting equipment, which is used for solving the technical problems of high feeding amount control difficulty and inaccurate PH adjustment of the traditional PH automatic adjusting device, and also provides a high-precision liquid-phase reaction PH adjusting method.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a high accuracy liquid phase reaction PH adjusting device which characterized in that: including stock solution device, infusion pipeline, priming device, controlling means, testing arrangement and liquid phase reation kettle, infusion pipeline's one end and stock solution device intercommunication, infusion pipeline's the other end and priming device intercommunication, priming device install in liquid phase reation kettle, testing arrangement's one end is located liquid phase reation kettle, and testing arrangement's the other end and controlling means are connected, and controlling means is connected with stock solution device, priming device.
Further, the testing device comprises a first PH tester and a second PH tester, a testing probe of the first PH tester is arranged in the middle of the lower part of the inner part of the reaction kettle, and a testing probe of the second PH tester is arranged on the side surface of the upper part of the inner part of the reaction kettle and is positioned below the reaction liquid level; the first PH tester and the second PH tester are both connected with a controller of the control device.
Further, the priming device is including annotating the liquid pipe and annotating the liquid head, annotates the liquid pipe and install in reation kettle, annotates the liquid head and evenly sets up on annotating the liquid pipe, annotates liquid pipe and infusion pipeline intercommunication, annotates liquid head and annotate liquid pipe intercommunication.
Further, annotate the liquid head and include reducing pipe and shower nozzle, the vertical setting of reducing pipe is on annotating the liquid pipe and with annotate liquid pipe intercommunication, and the lateral part of reducing pipe is equipped with the opening, and the shower nozzle passes through opening and reducing pipe intercommunication.
Furthermore, annotate the liquid head and still include the ball, the ball is placed in annotating the inside of liquid head, and the ball relies on the gravity to fall the toper position at the reducing pipe.
Further, the liquid storage device comprises an acid liquid storage tank for containing the acid regulating liquid, an alkali liquid storage tank for containing the alkali regulating liquid, a pressurizing pipeline and pressurizing equipment for providing pressure for the storage tanks, the tops of the two storage tanks are respectively connected with the pressurizing equipment through the pressurizing pipeline, and the bottoms of the two storage tanks are respectively communicated with the liquid injection pipe through liquid conveying pipelines.
Furthermore, the infusion pipeline comprises an acid liquid infusion pipe, an alkali liquid infusion pipe, a three-way pipe and an injection conduit, one end of the acid liquid infusion pipe and one end of the alkali liquid infusion pipe are respectively communicated with the acid liquid storage tank and the alkali liquid storage tank, the other ends of the acid liquid infusion pipe and the alkali liquid infusion pipe are both communicated with the three-way pipe, one end of the injection conduit is communicated with the three-way pipe, and the other end of the injection conduit is communicated with the injection pipe.
Furthermore, controlling means includes first liquid level detector, second liquid level detector and controller, and acid regulating solution liquid level in the acid liquor storage tank is monitored in real time to first liquid level detector setting inside the acidizing fluid storage tank, and alkaline adjusting solution liquid level in the alkaline solution storage tank is monitored in real time to the second liquid level detector setting inside the alkaline solution storage tank, and the signal output part and the controller of first liquid level detector and second liquid level detector are connected.
Furthermore, the control device further comprises a first pulse electromagnetic valve and a second pulse electromagnetic valve, the first pulse electromagnetic valve is installed on one side, close to the acid storage tank, of the acid liquor conveying pipe, a first check valve is arranged on one side, close to the three-way pipe, of the alkali liquor conveying pipe, the second pulse electromagnetic valve is installed on one side, close to the alkali liquor storage tank, of the alkali liquor conveying pipe, a second check valve is arranged on one side, close to the three-way pipe, of the alkali liquor conveying pipe, and the first pulse electromagnetic valve and the second pulse.
Based on the high-precision liquid phase reaction PH regulation equipment, the invention also relates to a high-precision liquid phase reaction PH regulation method, and the PH regulation method comprises the following steps:
a. the pressurizing device firstly pressurizes the acid liquor storage tank and the alkali liquor storage tank to keep a certain pressure; after a reaction system needing PH adjustment is added into the reaction kettle, stirring the reaction kettle, monitoring the PH values of different liquid levels in real time by a first PH tester and a second PH tester, feeding the PH values back to the controller, and setting single-pulse injection quantity and an adjustment target range on the controller;
b. when acid regulating liquid needs to be added, the first pulse electromagnetic valve is opened, the second pulse electromagnetic valve is closed, primary pulse liquid injection is carried out, the regulating liquid with pressure in the liquid injection process pushes the ball inside the liquid injection head open, the regulating liquid is sprayed out from the side face spray head of the reducer pipe, liquid injection is carried out on different positions of the reaction system, the first pulse electromagnetic valve is closed after a certain amount of acid regulating liquid is injected, the ball falls down to close the liquid injection head, the primary liquid injection is completed, the PH values are monitored in real time by the test probe of the first PH tester and the test probe of the second PH tester which are positioned at different liquid levels at the moment, the first pulse electromagnetic valve is opened to carry out secondary liquid injection after the two PH values tend to be the same, and the steps are repeated until the PH value of the reaction system is regulated to a set range;
c. when alkaline control solution needs to be added, the first pulse solenoid valve is closed, the second pulse solenoid valve is opened, primary pulse liquid injection is carried out, the second pulse solenoid valve is closed after a certain amount of alkaline control solution is injected, the ball falls down to close the liquid injection head, primary liquid injection is completed, the test probes of the first PH tester and the second PH tester which are located at different liquid levels at the moment monitor the PH value in real time, the second pulse solenoid valve is opened again after two PH values tend to be the same to carry out secondary liquid injection, the operation is repeated until the PH value of a reaction system is adjusted to a set range, and the adjustment is finished.
The technical scheme adopted by the invention has the advantages that:
1. the invention adopts the double PH tester to combine with the pulse electromagnetic valve to carry out liquid injection control, the pulse electromagnetic valve can set single pulse liquid injection amount, the PH test probes positioned at different liquid levels monitor the PH values in real time after the first liquid injection, and the second liquid injection is carried out after the two PH values tend to be the same, and the operation is repeated until the PH value of the reaction system is adjusted to the set range, thereby ensuring the accuracy of liquid injection control and avoiding the feeding control deviation caused by uneven liquid mixing.
2. The acid liquor storage tank and the alkali liquor storage tank are directly connected with the liquid phase reaction kettle, the liquid injection pipe, the liquid injection head and the PH tester are directly installed on the kettle cover of the liquid phase reaction kettle, the PH of a reaction system can be adjusted in real time, an adjusting tank is not additionally arranged, the equipment cost is saved, and the application range is wide; and the invention also has a plurality of liquid injection heads which can be opened only by a certain pressure, thus realizing the multipoint synchronous injection of the acid and alkali regulating liquid, achieving the effect of dispersed injection and accelerating the regulating efficiency.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic view of a PH adjusting apparatus according to the present invention;
FIG. 2 is a schematic structural diagram of a liquid injection device according to the present invention;
FIG. 3 is a schematic structural view of the injection head of the present invention.
The labels in the above figures are respectively: 1. an acid liquor storage tank; 2. an alkali liquor storage tank; 3. an acid liquor infusion tube; 4. an alkali liquor conveying pipe; 5. a three-way pipe; 6. an infusion catheter; 7. a liquid injection pipe; 8. a liquid injection head; 81. a reducer pipe; 82. a ball; 83. a spray head; 9. a first pulse solenoid valve; 10. a second pulse solenoid valve; 11. a first check valve; 12. a second check valve; 13. a first pH tester; 14. a first PH tester test probe; 15. a second pH tester; 16. a second pH tester test probe; 17. a first liquid level detector; 18. a second liquid level detector; 19. a controller; 20. a pressurizing device; 21. a pressurized conduit; 22. a liquid phase reaction kettle; 23. a motor; 24. and (4) a stirring paddle.
Detailed Description
In the present invention, it is to be understood that the term "length"; "Width"; "Up"; "Down"; "front"; "Back"; "left"; "Right"; "vertical"; "horizontal"; "Top"; "bottom" "inner"; "outer"; "clockwise"; "counterclockwise"; "axial"; "planar direction"; "circumferential" and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the indicated device or element must have a particular orientation; constructed and operative in a particular orientation and therefore should not be construed as limiting the invention.
As shown in fig. 1 to 3, a high precision PH adjusting apparatus for liquid phase reaction is characterized in that: including stock solution device, infusion pipeline, priming device, controlling means, testing arrangement and liquid phase reation kettle 22, infusion pipeline's one end and stock solution device intercommunication, infusion pipeline's the other end and priming device intercommunication, priming device install in liquid phase reation kettle 22, testing arrangement's one end is located liquid phase reation kettle 22, and testing arrangement's the other end is connected with controlling means, and controlling means is connected with stock solution device, priming device.
The testing device comprises a first PH tester 13 and a second PH tester 15, a testing probe 14 of the first PH tester is arranged in the middle of the lower part of the inner part of the reaction kettle 22 and used for monitoring the PH value of liquid in the middle of the bottom layer of the reaction system, and a testing probe 16 of the second PH tester is arranged on the side surface of the upper part of the inner part of the reaction kettle 22 and below the reaction liquid level and used for monitoring the PH value of liquid in the upper edge of the reaction system; the first PH tester 13 and the second PH tester 15 are both connected to a controller 19 of the control device. The controller can comprehensively process signals of the two PH testers, and further performs pulse control on the pulse electromagnetic valve, so that the acidic regulating solution or the alkaline regulating solution is injected into a reaction system in a pulse mode at certain interval time and single injection amount.
The liquid storage device comprises an acid liquid storage tank 1 for containing the acid regulating liquid, an alkali liquid storage tank 2 for containing the alkali regulating liquid, a pressurizing pipeline 21 and pressurizing equipment 20 for providing pressure for the storage tanks, the tops of the two storage tanks are respectively connected with the pressurizing equipment 20 through the pressurizing pipeline 21, and the bottoms of the two storage tanks are respectively communicated with the liquid injection pipe 7 through liquid conveying pipelines.
The control device comprises a first liquid level detector 17, a second liquid level detector 18 and a controller 19, the first liquid level detector 17 is arranged in the acid liquor storage tank 1 for monitoring the liquid level of the acid regulating liquid in the storage tank in real time, the second liquid level detector 18 is arranged in the alkali liquor storage tank 2 for monitoring the liquid level of the alkali regulating liquid in the storage tank in real time, and the signal output ends of the first liquid level detector 17 and the second liquid level detector 18 are connected with the controller 19.
The infusion pipeline comprises an acid liquid infusion pipe 3, an alkali liquid infusion pipe 4, a three-way pipe 5 and an injection conduit 6, one ends of the acid liquid infusion pipe 3 and the alkali liquid infusion pipe 4 are respectively communicated with an acid liquid storage tank 1 and an alkali liquid storage tank 2, the other ends of the acid liquid infusion pipe 3 and the alkali liquid infusion pipe 4 are both communicated with the three-way pipe 5, one end of the injection conduit 6 is communicated with the three-way pipe 5, and the other end of the injection conduit 6 is communicated with an injection pipe 7.
The control device further comprises a first pulse electromagnetic valve 9 and a second pulse electromagnetic valve 10, the first pulse electromagnetic valve 9 is installed on one side, close to the acid liquid storage tank 1, of the acid liquid conveying pipe 3, a first check valve 11 is arranged on one side, close to the three-way pipe 5, of the alkali liquid conveying pipe 4, the second pulse electromagnetic valve 10 is installed on one side, close to the alkali liquid storage tank 2, of the alkali liquid conveying pipe 4, a second check valve 12 is arranged on one side, close to the three-way pipe 5, of the alkali liquid conveying pipe, and the first pulse electromagnetic valve 9 and.
The priming device is including annotating liquid pipe 7 and annotating liquid head 8, annotates liquid pipe 7 and installs in reation kettle 22, annotates liquid head 8 and evenly sets up on annotating liquid pipe 7, annotates liquid pipe 7 and infusion pipeline intercommunication, annotates liquid head 8 and annotates liquid pipe 7 intercommunication, and preferably, annotate liquid pipe 7 and annotate the liquid pipe for the annular, annotate ten notes liquid heads 8 that equidistant setting was gone up on liquid pipe 7.
The liquid injection head 8 comprises a reducing pipe 81 and a spray head 83, the reducing pipe 81 is vertically arranged on the liquid injection pipe 7 and communicated with the liquid injection pipe 7, an opening is formed in the side portion of the reducing pipe 81, the spray head 83 is connected to the reducing pipe 81, and the spray head 83 is communicated with the reducing pipe 81 through the opening. The liquid injection head 8 further comprises a round ball 82, the round ball 82 is placed inside the liquid injection head 8, and the round ball 82 falls on the conical part of the reducing pipe 81 by means of self gravity. The liquid injection head 8 can be opened only by a certain pressure, so that the multipoint synchronous injection of the acid and alkali regulating liquid can be realized, the effect of dispersed injection is achieved, and the regulating efficiency is accelerated.
The test probe 14 of the first PH tester is arranged in the middle of the lower part of the inner part of the reaction kettle 22 and used for monitoring the PH value of the liquid in the middle of the bottom layer of the reaction system, the test probe 16 of the second PH tester is arranged on the side surface of the upper part of the inner part of the reaction kettle 22 and is positioned below the reaction liquid level and used for monitoring the PH value of the liquid in the upper layer of the reaction system, the controller 19 can be used for setting the single pulse injection amount of the pulse electromagnetic valve, the PH test probes positioned at different liquid levels after the regulating liquid is injected for the first time monitor the PH values in real time, the second injection is carried out after the two PH values tend to be the same, the operation is repeated in such a way until the PH value of the reaction system is regulated to a set range, namely, the controller 19 can comprehensively process the signals of the two PH testers and further carry out pulse control on the pulse electromagnetic valve, so that the acidic regulating liquid or, thereby guaranteed the accurate nature of notes liquid control, avoided because of the inhomogeneous reinforced control deviation that arouses of liquid mixture.
The PH adjusting apparatus further includes a stirring device installed in the liquid phase reaction tank 22. The stirring device comprises a motor 23 and a stirring paddle 24, the motor 23 is installed above a kettle cover of the liquid phase reaction kettle 22, one end of the stirring paddle 24 penetrates through the kettle cover to be connected with an output shaft of the motor 23, and the other end of the stirring paddle 24 extends into the lower part of the liquid phase reaction kettle 22 to stir liquid in the liquid phase reaction kettle 22.
Based on the high-precision liquid phase reaction PH regulating equipment, the invention also relates to a high-precision liquid phase reaction PH regulating method, which comprises the following steps:
a. the pressurizing device 20 firstly pressurizes the acid liquor storage tank 1 and the alkali liquor storage tank 2 to keep certain pressure; after a reaction system needing PH adjustment is added into the reaction kettle 22, the reaction kettle 22 is stirred and started, the first PH tester 13 and the second PH tester 15 monitor PH values of different liquid levels in real time and feed back the PH values to the controller 19, and single pulse injection amount and adjustment target range are set on the controller 19;
b. when acid regulating liquid needs to be added, the first pulse electromagnetic valve 9 is opened, the second pulse electromagnetic valve 10 is closed, primary pulse liquid injection is carried out, the pressure regulating liquid pushes the spherical balls 82 in the ten liquid injection heads 8 open in the liquid injection process, the spherical balls are discharged from the side spray heads of the reducer pipe 81, the ten liquid injection heads 8 can be opened simultaneously, liquid injection is carried out at ten different positions of the reaction system, the dispersed liquid injection effect is achieved, the first pulse electromagnetic valve 9 is closed after a certain amount of acid regulating liquid is injected, the liquid injection heads are closed after the spherical balls 82 fall down, the primary liquid injection is completed, the pH values are monitored in real time by the test probes 14 of the first pH tester and the test probes 16 of the second pH tester at different liquid levels, the first pulse electromagnetic valve 9 is opened for secondary liquid injection after the two pH values tend to be the same, and the steps are repeated until the pH value of the reaction system is regulated to a set range, and the;
c. when alkaline regulating solution needs to be added, the first pulse solenoid valve 9 is closed, the second pulse solenoid valve 10 is opened, primary pulse liquid injection is carried out, after a certain amount of alkaline regulating solution is injected, the second pulse solenoid valve 10 is closed, the ball 82 falls down to close the liquid injection head 8, the primary liquid injection is completed, the pH values of the test probe 14 of the first pH tester and the test probe 16 of the second pH tester which are positioned at different liquid levels are monitored in real time, the second pulse solenoid valve 10 is opened for secondary liquid injection after the two pH values tend to be the same, the operation is repeated until the pH value of the reaction system is regulated to a set range, and the regulation is finished;
d. when the liquid in the acid liquor storage tank or the alkali liquor storage tank is insufficient in the adjusting process, the first liquid level detector 17 or the second liquid level detector 18 feeds back signals to the controller 19, the controller 19 controls the electromagnetic valve to be closed and sends out alarm signals, the storage tank is pressurized after the pressure of the storage tank is relieved and the liquid is supplemented, and the controller 19 is restarted to continuously adjust the pH value of the reaction system.
In a word, the invention has the advantages of high control precision, high adjusting efficiency and wide application range.
The invention adopts the double PH tester to combine with the pulse electromagnetic valve to carry out liquid injection control, the pulse electromagnetic valve can set single pulse liquid injection amount, the PH test probes positioned at different liquid levels monitor the PH values in real time after the first liquid injection, and the second liquid injection is carried out after the two PH values tend to be the same, and the operation is repeated until the PH value of the reaction system is adjusted to the set range, thereby ensuring the accuracy of liquid injection control and avoiding the feeding control deviation caused by uneven liquid mixing.
The acid liquor storage tank and the alkali liquor storage tank are directly connected with the liquid phase reaction kettle, the liquid injection pipe, the liquid injection head and the PH tester are directly installed on the kettle cover of the liquid phase reaction kettle, the PH of a reaction system can be adjusted in real time, an adjusting tank is not additionally arranged, the equipment cost is saved, and the application range is wide; and the invention also has a plurality of liquid injection heads which can be opened only by a certain pressure, thus realizing the multipoint synchronous injection of the acid and alkali regulating liquid, achieving the effect of dispersed injection and accelerating the regulating efficiency.
The invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the technical solution of the invention or to apply the concept and technical solution of the invention directly to other occasions without modification.
Claims (10)
1. The utility model provides a high accuracy liquid phase reaction PH adjusting device which characterized in that: including stock solution device, infusion pipeline, priming device, controlling means, testing arrangement and liquid phase reation kettle (22), infusion pipeline's one end and stock solution device intercommunication, infusion pipeline's the other end and priming device intercommunication, priming device install in liquid phase reation kettle (22), and testing arrangement's one end is located liquid phase reation kettle (22), and testing arrangement's the other end and controlling means are connected, and controlling means is connected with stock solution device, priming device.
2. A high precision PH adjusting apparatus for liquid phase reaction according to claim 1, wherein: the testing device comprises a first PH tester (13) and a second PH tester (15), a testing probe (14) of the first PH tester is arranged in the middle of the lower part inside the reaction kettle (22), and a testing probe (16) of the second PH tester is arranged on the side surface of the upper part inside the reaction kettle (22) and is positioned below the reaction liquid level; the first PH tester (13) and the second PH tester (15) are both connected with a controller (19) of the control device.
3. A high precision PH adjusting apparatus for liquid phase reaction according to claim 2, wherein: the liquid injection device comprises a liquid injection pipe (7) and a liquid injection head (8), wherein the liquid injection pipe (7) is installed in the reaction kettle (22), the liquid injection head (8) is uniformly arranged on the liquid injection pipe (7), the liquid injection pipe (7) is communicated with the liquid injection pipeline, and the liquid injection head (8) is communicated with the liquid injection pipe (7).
4. A high precision PH adjusting apparatus for liquid phase reaction according to claim 3, wherein: annotate liquid head (8) including reducing pipe (81) and shower nozzle (83), reducing pipe (81) are vertical to be set up on annotating liquid pipe (7) and with annotate liquid pipe (7) intercommunication, and the lateral part of reducing pipe (81) is equipped with the opening, and shower nozzle (83) are through opening and reducing pipe (81) intercommunication.
5. A high precision liquid phase reaction PH regulating device as claimed in claim 4, wherein: annotate liquid head (8) still include ball (82), and ball (82) are placed in annotating the inside of liquid head (8), and ball (82) rely on the gravity to fall at the toper position of reducing pipe (81).
6. A high accuracy liquid phase reaction pH adjusting apparatus as set forth in any one of claims 3 to 5, wherein: the liquid storage device comprises an acid liquid storage tank (1) for containing the acid regulating liquid, an alkali liquid storage tank (2) for containing the alkali regulating liquid, a pressurizing pipeline (21) and pressurizing equipment (20) for providing pressure for the storage tanks, the tops of the two storage tanks are connected with the pressurizing equipment (20) through the pressurizing pipeline (21), and the bottoms of the two storage tanks are communicated with the liquid injection pipe (7) through liquid infusion pipelines.
7. A high accuracy liquid phase reaction PH regulating device as claimed in claim 6, wherein: the infusion pipeline comprises an acid liquor infusion pipe (3), an alkali liquor infusion pipe (4), a three-way pipe (5) and an injection conduit (6), one ends of the acid liquor infusion pipe (3) and the alkali liquor infusion pipe (4) are respectively communicated with an acid liquor storage tank (1) and an alkali liquor storage tank (2), the other ends of the acid liquor infusion pipe (3) and the alkali liquor infusion pipe (4) are communicated with the three-way pipe (5), one end of the injection conduit (6) is communicated with the three-way pipe (5), and the other end of the injection conduit (6) is communicated with an injection pipe (7).
8. A high precision PH adjusting apparatus for liquid phase reaction according to claim 7, wherein: the control device comprises a first liquid level detector (17), a second liquid level detector (18) and a controller (19), wherein the first liquid level detector (17) is arranged at the liquid level of an acidic regulating solution in the acid liquor storage tank (1) in the internal real-time monitoring storage tank, the second liquid level detector (18) is arranged at the liquid level of an alkaline regulating solution in the alkaline liquor storage tank (2) in the internal real-time monitoring storage tank, and the signal output ends of the first liquid level detector (17) and the second liquid level detector (18) are connected with the controller (19).
9. A high precision PH adjusting apparatus for liquid phase reaction according to claim 8, wherein: the control device further comprises a first pulse electromagnetic valve (9) and a second pulse electromagnetic valve (10), the first pulse electromagnetic valve (9) is installed on one side, close to the acid liquid storage tank (1), of the acid liquid conveying pipe (3), a first check valve (11) is arranged on one side, close to the three-way pipe (5), of the acid liquid conveying pipe (4), the second pulse electromagnetic valve (10) is installed on one side, close to the alkali liquid storage tank (2), of the alkali liquid conveying pipe (4), a second check valve (12) is arranged on one side, close to the three-way pipe (5), of the alkali liquid conveying pipe, and the first pulse electromagnetic valve (9) and the second pulse electromagnetic valve (.
10. A high-precision liquid phase reaction PH regulation method is characterized in that: a high precision PH adjusting apparatus for liquid phase reaction according to claims 1 to 9, wherein the PH adjusting method comprises:
a. the pressurizing device (20) first pressurizes the acid liquor storage tank (1) and the alkali liquor storage tank (2) to keep certain pressure; after a reaction system needing PH adjustment is added into the reaction kettle (22), the reaction kettle (22) is started to stir, the first PH tester (13) and the second PH tester (15) monitor PH values of different liquid levels in real time and feed the PH values back to the controller (19), and single-pulse injection quantity and an adjustment target range are set on the controller (19);
b. when acid regulating liquid needs to be added, the first pulse electromagnetic valve (9) is opened, the second pulse electromagnetic valve (10) is closed, primary pulse liquid injection is carried out, the regulating liquid with pressure in the liquid injection process pushes the spherical ball (82) in the liquid injection head (8) open, the spherical ball is sprayed out from the side face spray head (83) of the reducing pipe (81), liquid injection is carried out at different positions of the reaction system, the first pulse electromagnetic valve (9) is closed after a certain amount of acid regulating liquid is injected, the spherical ball (82) falls down to close the liquid injection head, the primary liquid injection is completed, the test probes (14) of the first PH tester and the test probes (16) of the second PH tester which are located at different liquid levels monitor the PH values in real time, the first pulse electromagnetic valve (9) is opened to carry out secondary liquid injection after the two PH values tend to be the same, and the steps are repeated until the PH of the reaction system is regulated to a set range, and the regulation is;
c. when alkaline regulating liquid needs to be added, the first pulse solenoid valve (9) is closed, the second pulse solenoid valve (10) is opened, primary pulse liquid injection is carried out, the second pulse solenoid valve (10) is closed after a certain amount of alkaline regulating liquid is injected, the round ball (82) falls down to close the liquid injection head (8), primary liquid injection is completed, the test probe (14) of the first PH tester and the test probe (16) of the second PH tester which are located at different liquid levels are used for monitoring the PH value in real time, the second pulse solenoid valve (10) is opened again after two PH values tend to be the same for secondary liquid injection, the operation is repeated until the PH value of a reaction system is regulated to a set range, and the adjustment is finished.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011308677.3A CN112316851A (en) | 2020-11-20 | 2020-11-20 | High-precision liquid phase reaction PH adjusting device and PH adjusting method |
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| CN202011308677.3A CN112316851A (en) | 2020-11-20 | 2020-11-20 | High-precision liquid phase reaction PH adjusting device and PH adjusting method |
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| CN202011308677.3A Pending CN112316851A (en) | 2020-11-20 | 2020-11-20 | High-precision liquid phase reaction PH adjusting device and PH adjusting method |
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