CN111855890A - Method for maintaining required pH value of reaction liquid in continuous feeding reaction process - Google Patents
Method for maintaining required pH value of reaction liquid in continuous feeding reaction process Download PDFInfo
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- CN111855890A CN111855890A CN202010560457.3A CN202010560457A CN111855890A CN 111855890 A CN111855890 A CN 111855890A CN 202010560457 A CN202010560457 A CN 202010560457A CN 111855890 A CN111855890 A CN 111855890A
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Abstract
The invention relates to the technical field of chemical reaction experiments, in particular to a method for maintaining a pH value required by a reaction solution in a continuous feeding reaction process. The method comprises the following steps: injecting a reaction solution, and starting an experiment; starting the stirring device; setting a feeding speed; maintaining a stable air pressure; maintaining a stable temperature; maintaining stable pH value; recording and displaying the amount of the dropwise added acidic neutralizing solution in real time; and recording and displaying the amount of the dropwise alkaline neutralizing liquid in real time. The design of the invention can constantly keep a good environment suitable for chemical reaction, and simultaneously, the optimal reaction effect is achieved by maintaining the pH value of the reaction environment, so that the reaction is prevented from being influenced by acid-base environment, the reaction speed and completeness are improved, and the resource waste is reduced.
Description
Technical Field
The invention relates to the technical field of chemical reaction experiments, in particular to a method for maintaining a pH value required by a reaction solution in a continuous feeding reaction process.
Background
Disclosure of Invention
The present invention is directed to a method for maintaining a desired pH of a reaction solution during a continuous feed reaction, which solves the above-mentioned problems of the prior art.
In order to solve the technical problems, the invention provides a method for maintaining the required pH value of a reaction solution in a continuous feeding reaction process, which comprises the following steps:
s1, injecting a reaction solution, and starting an experiment;
s2, starting a stirring device;
s3, setting a feeding speed;
s4, maintaining stable air pressure;
s6, maintaining a stable temperature;
s6, maintaining stable pH value;
s7, recording and displaying the amount of the dropwise added acidic neutralizing liquid in real time;
and S8, recording and displaying the amount of the alkaline neutralizing liquid added dropwise in real time.
As a further improvement of the present invention, in S4, the step of maintaining the stable air pressure is as follows:
s4.1, setting a required air pressure value (p);
s4.2, measuring a real-time air pressure value (p 1);
s4.3, judging whether p1 is larger than p, if not, introducing protective gas, and returning to S4.2; if yes, stopping introducing the protective gas, and returning to S4.2.
As a further improvement of the present invention, in S6, the step of maintaining the stable temperature is as follows:
s6.1, setting a required temperature range (t 1-t 2);
s6.2, measuring the real-time reaction temperature (t);
s6.3, judging whether t is more than or equal to t1 and less than or equal to t2, if so, returning to S6.2; if not, entering the next step;
s6.4, judging whether t is larger than t2, if so, heating the reaction kettle, and returning to S6.2; if not, entering the next step;
S6.6, judging whether t is less than t1, if so, stopping heating, cooling the reaction kettle, and returning to S6.2; if not, directly returning to S6.2.
As a further improvement of the present invention, in S6, the step of maintaining the stable ph value is as follows:
s6.1, setting a required PH value (n);
s6.2, setting the PH value control precision (k);
s6.3, measuring the real-time PH value (m);
s6.4, judging whether m-n is larger than or equal to k, if so, dropwise adding an acidic neutralizing solution, and returning to S6.3; if not, entering the next step;
s6.5, judging whether n-m is larger than or equal to k, if so, dropwise adding an alkaline neutralizing liquid, and returning to S6.3; if not, directly returning to S6.3.
As a further improvement of the technical solution, in S6, the reaction formula of acid-base neutralization is as follows:
acid + base → salt + water.
The alkaline neutralizing solution can be selected from sodium hydroxide, calcium hydroxide, aluminum hydroxide, barium hydroxide, ferric hydroxide, potassium hydroxide, copper hydroxide, etc.
The acidic neutralizing solution can be selected from hydrochloric acid, sulfuric acid, nitric acid, hydroiodic acid, and the like.
As a further improvement of the technical proposal, in the S6, when the acidic/basic neutralizing solution is dripped, the feeding speed is reduced.
As a further improvement of the present invention, in S7, an accumulation algorithm is used for the recorded amount of the acidic neutralizing solution.
As a further improvement of the present invention, in S8, an accumulation algorithm is used for the recorded amount of the alkaline neutralizing solution.
The accumulation algorithm comprises the following algorithm processes:
Private SubCommand1_Click()
Dimn％，i％，s&
n-Val (InputBOx ("n" is input n, n is the number of times a certain amount of acidic neutralized solution can be added dropwise "))
s＝0
For i＝1 To n
s＝s+i
Next i
Print s
End Sub。
Compared with the prior art, the invention has the beneficial effects that: in the method for maintaining the pH value required by the reaction liquid in the continuous feeding reaction process, the stable air pressure and temperature in the reaction kettle are maintained, the good environment suitable for chemical reaction is kept constantly, meanwhile, the pH value of the reaction environment is maintained through real-time detection and dropwise adding the acid-base neutralization liquid to achieve the optimal reaction effect, the acid-base environment is prevented from influencing the normal running of the reaction, the reaction speed and completeness are improved, and the resource waste is reduced.
Drawings
FIG. 1 is a block diagram of the overall process flow of example 1;
FIG. 2 is a block diagram showing a flow of a method for maintaining a stable gas pressure according to example 1;
FIG. 3 is a block diagram showing a flow of a method for maintaining a stable temperature according to example 1;
FIG. 4 is a block diagram of a process flow for maintaining a stable pH value in example 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in FIGS. 1 to 4, this example provides a method for maintaining a desired pH of a reaction solution during a continuous feed reaction, comprising the steps of:
s1, injecting a reaction solution, and starting an experiment;
s2, starting a stirring device;
s3, setting a feeding speed;
s4, maintaining stable air pressure;
s6, maintaining a stable temperature;
s6, maintaining stable pH value;
s7, recording and displaying the amount of the dropwise added acidic neutralizing liquid in real time;
and S8, recording and displaying the amount of the alkaline neutralizing liquid added dropwise in real time.
In this embodiment, in S4, the step of maintaining the stable air pressure is as follows:
s4.1, setting a required air pressure value (p);
s4.2, measuring a real-time air pressure value (p 1);
s4.3, judging whether p1 is larger than p, if not, introducing protective gas, and returning to S4.2; if yes, stopping introducing the protective gas, and returning to S4.2.
In this embodiment, the step of maintaining the stable temperature in S6 is as follows:
s6.1, setting a required temperature range (t 1-t 2);
s6.2, measuring the real-time reaction temperature (t);
s6.3, judging whether t is more than or equal to t1 and less than or equal to t2, if so, returning to S6.2; if not, entering the next step;
s6.4, judging whether t is larger than t2, if so, heating the reaction kettle, and returning to S6.2; if not, entering the next step;
S6.6, judging whether t is less than t1, if so, stopping heating, cooling the reaction kettle, and returning to S6.2; if not, directly returning to S6.2.
In this embodiment, in S6, the step of maintaining the stable ph value is as follows:
s6.1, setting a required PH value (n);
s6.2, setting the PH value control precision (k);
s6.3, measuring the real-time PH value (m);
s6.4, judging whether m-n is larger than or equal to k, if so, dropwise adding an acidic neutralizing solution, and returning to S6.3; if not, entering the next step;
s6.5, judging whether n-m is larger than or equal to k, if so, dropwise adding an alkaline neutralizing liquid, and returning to S6.3; if not, directly returning to S6.3.
Further, in S6, the reaction formula for acid-base neutralization is:
acid + base → salt + water.
The alkaline neutralizing solution can be selected from sodium hydroxide, calcium hydroxide, aluminum hydroxide, barium hydroxide, ferric hydroxide, potassium hydroxide, copper hydroxide, etc.
The acidic neutralizing solution can be selected from hydrochloric acid, sulfuric acid, nitric acid, hydroiodic acid, and the like.
Further, in S6, when the acidic/basic neutralizing solution was added dropwise, the feed rate was decreased.
Among them, it is worth to say that the feed rate is returned to the original set rate when the reaction pH in the reaction solution is stabilized.
In this embodiment, in S7, the recorded amount of the acidic neutralizing solution is calculated by an accumulation algorithm.
In this embodiment, in S8, the amount of the alkali neutralizing solution recorded is calculated by an accumulation algorithm.
The accumulation algorithm comprises the following algorithm processes:
Private Sub Command1_Click()
Dim n％，i％，s&
n-Val (InputBOx ("n" is input n, n is the number of times a certain amount of acidic neutralized solution can be added dropwise "))
s＝0
For i＝1 To n
s＝s+i
Next i
Print s
End Sub。
In addition, the embodiment also provides a device suitable for maintaining the required pH value of the reaction liquid in the continuous feeding reaction process, and the device comprises a processor, a memory and a bus.
The processor comprises one or more processing cores, the processor is connected with the processor through a bus, the memory is used for storing program instructions, and the method for maintaining the required pH value of the reaction liquid in the continuous feeding reaction process is realized when the processor executes the program instructions in the memory.
In addition, the present invention provides a computer readable storage medium, wherein a computer program is stored, and the computer program, when executed by a processor, implements the above method steps for maintaining a desired PH of a reaction solution during a continuous feed reaction.
Optionally, the present invention also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the above-described method steps suitable for maintaining a desired PH of a reaction solution during a continuous feed reaction.
It will be understood by those skilled in the art that all or part of the steps of implementing the above embodiments may be implemented by hardware, or may be implemented by hardware related to instructions of a program, which may be stored in a computer-readable storage medium, such as a read-only memory, a magnetic or optical disk, and the like.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The method for maintaining the pH value required by the reaction liquid in the continuous feeding reaction process is characterized by comprising the following steps of: the method comprises the following steps:
s1, injecting a reaction solution, and starting an experiment;
s2, starting a stirring device;
s3, setting a feeding speed;
s4, maintaining stable air pressure;
S6, maintaining a stable temperature;
s6, maintaining stable pH value;
s7, recording and displaying the amount of the dropwise added acidic neutralizing liquid in real time;
and S8, recording and displaying the amount of the alkaline neutralizing liquid added dropwise in real time.
2. The method of claim 1 for maintaining a desired PH of a reaction solution during a continuous feed reaction, wherein: in S4, the step of maintaining the stable air pressure is as follows:
s4.1, setting a required air pressure value (p);
s4.2, measuring a real-time air pressure value (p 1);
s4.3, judging whether p1 is larger than p, if not, introducing protective gas, and returning to S4.2; if yes, stopping introducing the protective gas, and returning to S4.2.
3. The method of claim 1 for maintaining a desired PH of a reaction solution during a continuous feed reaction, wherein: in S6, the step of maintaining the stable temperature is as follows:
s6.1, setting a required temperature range (t 1-t 2);
s6.2, measuring the real-time reaction temperature (t);
s6.3, judging whether t is more than or equal to t1 and less than or equal to t2, if so, returning to S6.2; if not, entering the next step;
s6.4, judging whether t is larger than t2, if so, heating the reaction kettle, and returning to S6.2; if not, entering the next step;
s6.6, judging whether t is less than t1, if so, stopping heating, cooling the reaction kettle, and returning to S6.2; if not, directly returning to S6.2.
4. The method of claim 1 for maintaining a desired PH of a reaction solution during a continuous feed reaction, wherein: in S6, the step of maintaining the stable ph value is as follows:
s6.1, setting a required PH value (n);
s6.2, setting the PH value control precision (k);
s6.3, measuring the real-time PH value (m);
s6.4, judging whether m-n is larger than or equal to k, if so, dropwise adding an acidic neutralizing solution, and returning to S6.3; if not, entering the next step;
s6.5, judging whether n-m is larger than or equal to k, if so, dropwise adding an alkaline neutralizing liquid, and returning to S6.3; if not, directly returning to S6.3.
5. The method of claim 1 for maintaining a desired PH of a reaction solution during a continuous feed reaction, wherein: in the S6, the reaction formula of acid-base neutralization is as follows:
acid + base → salt + water.
6. The method of claim 1 for maintaining a desired PH of a reaction solution during a continuous feed reaction, wherein: in the S6, when the acidic/basic neutralizing solution was added dropwise, the feed rate was decreased.
7. The method of claim 1 for maintaining a desired PH of a reaction solution during a continuous feed reaction, wherein: in S7, the recorded amount of the acidic neutralizing solution is calculated by an accumulation algorithm.
8. The method of claim 1 for maintaining a desired PH of a reaction solution during a continuous feed reaction, wherein: in S8, the recorded amount of the alkaline neutralizing solution is accumulated by an accumulation algorithm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010560457.3A CN111855890A (en) | 2020-06-18 | 2020-06-18 | Method for maintaining required pH value of reaction liquid in continuous feeding reaction process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010560457.3A CN111855890A (en) | 2020-06-18 | 2020-06-18 | Method for maintaining required pH value of reaction liquid in continuous feeding reaction process |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539624A (en) * | 2012-01-04 | 2012-07-04 | 上海蓝星聚甲醛有限公司 | Method for measuring thermal stability of polyformaldehyde |
| CN202516542U (en) * | 2012-03-06 | 2012-11-07 | 美药星（南京）制药有限公司 | PH and temperature automatic control system for reaction kettle |
| CN104317324A (en) * | 2014-09-29 | 2015-01-28 | 张家港市三联化工科技有限公司 | Acidification PH value automatic monitoring control device |
-
2020
- 2020-06-18 CN CN202010560457.3A patent/CN111855890A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539624A (en) * | 2012-01-04 | 2012-07-04 | 上海蓝星聚甲醛有限公司 | Method for measuring thermal stability of polyformaldehyde |
| CN202516542U (en) * | 2012-03-06 | 2012-11-07 | 美药星（南京）制药有限公司 | PH and temperature automatic control system for reaction kettle |
| CN104317324A (en) * | 2014-09-29 | 2015-01-28 | 张家港市三联化工科技有限公司 | Acidification PH value automatic monitoring control device |
Non-Patent Citations (2)
| Title |
|---|
| 何东平 等: "《油脂工厂设计手册（中册）》", 31 August 2012, 湖北科学技术出版社 * |
| 刘大华: "《合成橡胶工业手册》", 31 December 1991, 化学工业出版社 * |
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