On-line pH detection control device in under-pressure reaction system

By designing an online pH detection control device in the pressure-belt reaction system, and automatically adjusting the input of acid binding agents with the PH sensor and controller, the problems of reducing pH value and overuse of acid binding agents under high-temperature pressure-belt conditions are solved, and raw material saving and reaction efficiency are achieved.

CN222850887UActive Publication Date: 2025-05-09NINGXIA NINGTAI TECH CO LTD
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Patent Information

Application Number
CN202421906089.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-07
Publication Date
2025-05-09
Estimated Expiration
2034-08-07

AI Technical Summary

Technical Problem

In the pressure-belt reaction system, under high temperature pressure conditions, the corrosion of hydrohalogenic acid and the reduction of pH value lead to the corrosion and reaction process of equipment, and the existing technology is difficult to achieve online detection and neutralization, resulting in excessive use of acid-binding agents and waste of raw materials.

Method used

Design an online pH detection control device in a pressure-bearing reaction system, including a PH sensor, a controller, an electronically controlled valve, a storage tank, an electric push rod and a push plate. The pH value in the reactor is detected through the PH sensor. The controller controls the electronically controlled valve and an electric push rod, and automatically adjusts the input of the acid binding agent to ensure that the pH value is within the set range.

Benefits of technology

It realizes online detection and automatic adjustment of pH value in the pressure-baric reaction system, avoids excessive use of acid binding agents, saves raw materials, and improves reaction efficiency and service life of the equipment.

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Abstract

The utility model provides an online pH detection control device in an under-pressure reaction system, and belongs to the technical field of fine chemical reaction. The online pH detection control device in the under-pressure reaction system comprises a control assembly and a reaction kettle main body. The control assembly comprises a PH sensor, a controller, an electric control valve, a storage tank, an electric push rod and a push plate, during use, the PH sensor transmits a detected PH value to the controller through an electric signal, the controller controls the electric control valve to be opened, the controller controls the electric push rod to work, and then an acid binding agent can be pushed into the reaction kettle main body through the electric control valve; and when the PH value reaches a preset value of the controller, the controller closes the electric push rod and the electric control valve so as to stop inputting the acid-binding agent into the reaction kettle main body, so that excessive acid-binding agent does not need to be added into the reaction kettle main body, and a large amount of acid-binding agent raw materials can be saved.
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Description

Technical Field

[0001] The present application relates to the field of fine chemical reactions, and in particular to an online pH detection and control device in a pressurized reaction system. Background Art

[0002] In fine chemical reaction systems, pressure reactions are often involved, such as the alkylation of aromatic amines, which usually reacts under a pressure of 0.2-1.0 MPa. If alkylation agents are halogenated alkyls, the reaction products usually produce hydrohalic acid (hydrogen chloride, hydrogen bromide, etc.), which can cause serious corrosion to equipment under high temperature and pressure conditions. At the same time, the reduction in system pH also seriously affects the reaction process. Acid binding agents are usually used in the reaction system to neutralize the hydrohalic acid.

[0003] Due to the special characteristics of the reaction system under high temperature and pressure, stage detection and neutralization cannot be achieved. The conventional operation is to add excessive acid binding agent into the reaction system in advance, but excessive acid binding agent will cause a large amount of raw materials to be wasted. Utility Model Content

[0004] In order to make up for the above shortcomings, the present application provides an online pH detection and control device in a pressurized reaction system, aiming to improve the problem of causing a large amount of waste of raw materials.

[0005] An embodiment of the present application provides an online pH detection control device in a pressurized reaction system, including a control component and a reactor body.

[0006] The control component includes a PH sensor, a controller, an electric control valve, a storage tank, an electric push rod and a push plate. The PH sensor is electrically connected to the controller, the electric control valve is electrically connected to the controller, one end of the storage tank is connected to a liquid outlet pipe, the electric control valve is connected to the liquid outlet pipe, the electric push rod is electrically connected to the controller, the electric push rod is connected to the other end of the storage tank, the push plate is connected to the telescopic end of the electric push rod, and the push plate is slidably arranged inside the storage tank.

[0007] The detection end of the pH sensor is fixedly inserted into the interior of the reactor body, the controller is connected to the outer wall of the reactor body, and one end of the liquid outlet pipe is fixedly connected to the interior of the reactor body.

[0008] In a specific embodiment, a connecting plate is provided on the outer wall of the reactor body, and the controller is connected to one side of the connecting plate.

[0009] In a specific implementation, a display screen is disposed on one side of the controller, and buttons are disposed below the display screen. There are a plurality of buttons, and the buttons are evenly arranged in two rows.

[0010] In a specific implementation, one end of the storage tank close to the electric push rod is connected to a first breathing valve, and the first breathing valve is located below the electric push rod.

[0011] In a specific embodiment, the telescopic end of the electric push rod slides through the end wall of the storage tank, and the telescopic end of the electric push rod is slidably inserted into the interior of the storage tank.

[0012] In a specific embodiment, the wall fixing sleeve of the push plate is provided with a rubber sealing gasket, and the outer wall of the rubber sealing gasket is slidably fitted with the inner wall of the storage tank.

[0013] In a specific embodiment, a reinforcing rod is provided on the outer wall of the reactor body, and one end of the storage tank is fixedly connected to one end of the reinforcing rod.

[0014] In a specific embodiment, an L-shaped drain pipe is provided at one end of the storage tank close to the reactor body, and a second breathing valve is provided on the tube body of the L-shaped drain pipe.

[0015] In a specific embodiment, the top of the storage tank is connected to a liquid inlet funnel, and the bottom of the liquid inlet funnel is provided with a first valve.

[0016] In a specific embodiment, the top of the storage tank is connected to a second valve, and the second valve is located on one side of the liquid inlet funnel.

[0017] The beneficial effects of the utility model are as follows: the utility model obtains an online pH detection control device in a pressurized reaction system through the above design. When in use, the acid binding agent fills the space between the push plate and the electric control valve. During the reaction inside the reactor body, the pH sensor detects the pH inside the reactor body. The pH sensor transmits the detected pH value to the controller through an electrical signal. When the pH value is lower than a preset value of the controller, the controller controls the electric control valve to open, and the controller controls the electric push rod to work. The electric push rod pushes the push plate to move toward the electric control valve, and then the acid binding agent can be pushed into the reactor body through the electric control valve, and then the pH value inside the reactor body can be changed. When the pH value reaches the preset value of the controller, the controller closes the electric push rod and the electric control valve, and then stops inputting the acid binding agent into the reactor body, and then there is no need to add excessive acid binding agent into the reactor body, and then a large amount of acid binding agent raw materials can be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a first-view structural schematic diagram of an online pH detection control device in a pressurized reaction system provided in an embodiment of the present application;

[0020] Figure 2 A second perspective structural diagram of an online pH detection control device in a pressurized reaction system provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of the control component structure provided for an embodiment of the present application;

[0022] Figure 4 A schematic diagram of a cross-sectional structure of a storage tank provided in an embodiment of the present application;

[0023] Figure 5 This is a schematic diagram of the circuit connection block diagram of the PH sensor, controller, electronically controlled valve and electric push rod provided in the implementation mode of the present application.

[0024] In the figure: 100-control component; 110-PH sensor; 120-controller; 121-display screen; 122-button; 130-electrically controlled valve; 140-storage tank; 141-liquid outlet pipe; 142-L-shaped discharge pipe; 143-second breathing valve; 144-liquid inlet funnel; 145-first valve; 146-second valve; 147-observation window; 150-electric push rod; 160-push plate; 161-rubber sealing gasket; 170-first breathing valve; 200-reactor body; 201-connecting plate; 202-reinforcement rod. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0026] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] See also Figure 1 The present application provides an online pH detection control device in a pressurized reaction system, including a control component 100 and a reactor body 200.

[0028] See also Figure 1-5 The control component 100 includes a pH sensor 110, a controller 120, an electric control valve 130, a storage tank 140, an electric push rod 150 and a push plate 160. The pH sensor 110 is electrically connected to the controller 120. A display screen 121 is provided on one side of the controller 120. A button 122 is provided below the display screen 121. There are a plurality of buttons 122, which are evenly arranged in two rows. The electric control valve 130 is electrically connected to the controller 120. The controller 120 can control the opening and closing of the electric control valve 130. A liquid outlet pipe 141 is connected to one end of the storage tank 140, and the electric control valve 130 is connected to the liquid outlet pipe 141.

[0029] In this embodiment, the electric push rod 150 is electrically connected to the controller 120, and the controller 120 can control the extension and retraction of the telescopic end of the electric push rod 150. The electric push rod 150 is connected to the other end of the storage tank 140. The telescopic end of the electric push rod 150 slides through the end wall of the storage tank 140, and the telescopic end of the electric push rod 150 is slidably inserted into the interior of the storage tank 140.

[0030] In this embodiment, the push plate 160 is connected to the telescopic end of the electric push rod 150, and the push plate 160 is slidably set inside the storage tank 140. The ring wall of the push plate 160 is fixed with a rubber sealing gasket 161. The outer ring wall of the rubber sealing gasket 161 is slidably fitted with the inner wall of the storage tank 140, and the rubber sealing gasket 161 can seal the interior of the storage tank 140.

[0031] In the specific setting, one end of the storage tank 140 close to the electric push rod 150 is connected to the first breathing valve 170, and the first breathing valve 170 is used to balance the pressure on one side of the push plate 160. An observation window 147 is provided at the bottom of the storage tank 140, and transparent glass is observed inside the observation window 147. The remaining amount of the acid binding agent inside the storage tank 140 can be viewed through the observation window 147 and the transparent glass.

[0032] In the present application, the top of the storage tank 140 is connected to a liquid inlet funnel 144, the bottom of the liquid inlet funnel 144 is provided with a first valve 145, the top of the storage tank 140 is connected to a second valve 146, the second valve 146 is located on one side of the liquid inlet funnel 144, the first valve 145 can be opened, and then the acid binding agent can be added into the interior of the storage tank 140 through the liquid inlet funnel 144, during the process of adding the acid binding agent, the second valve 146 can be opened, and then the gas inside the storage tank 140 can be discharged through the second valve 146.

[0033] See also Figure 1-4 The detection end of the pH sensor 110 is fixedly inserted into the interior of the reactor body 200, the controller 120 is connected to the outer wall of the reactor body 200, the outer wall of the reactor body 200 is provided with a connecting plate 201, the controller 120 is connected to one side of the connecting plate 201, one end of the liquid outlet pipe 141 is fixedly connected to the interior of the reactor body 200, the outer wall of the reactor body 200 is provided with a reinforcing rod 202, and one end of the storage tank 140 is fixedly connected to one end of the reinforcing rod 202.

[0034] In the present embodiment, an L-shaped liquid discharge pipe 142 is provided at one end of the storage tank 140 close to the reactor body 200, and a second breathing valve 143 is provided on the tube body of the L-shaped liquid discharge pipe 142. The first breathing valve 170 and the second breathing valve 143 are symmetrically arranged. The first breathing valve 170 and the second breathing valve 143 are respectively used to balance the pressure on both sides of the push plate 160. When the electric control valve 130 cannot be opened normally, the electric push rod 150 continues to push the push plate 160 to squeeze the acid binding agent, and the acid binding agent cannot enter the interior of the reactor body 200 through the electric control valve 130. As the pressure increases, the second breathing valve 143 opens, and the acid binding agent is discharged from the L-shaped liquid discharge pipe 142, thereby protecting the storage tank 140.

[0035] Specifically, the working principle of the online pH detection control device in the pressurized reaction system is as follows: when in use, the first valve 145 and the second valve 146 are opened, and then the acid binding agent is added into the storage tank 140 through the liquid inlet funnel 144. When the storage tank 140 is full, the first valve 145 and the second valve 146 are closed, and the acid binding agent fills the space between the push plate 160 and the electric control valve 130. During the reaction inside the reactor body 200, the pH sensor 110 will detect the pH inside the reactor body 200, and the pH sensor 110 will transmit the detected pH value to the controller 120 through the electrical signal, and the controller 120 will analyze the electrical signal of the pH value. When the pH value is When the pH value is lower than the preset value of the controller 120, the controller 120 controls the electric control valve 130 to open, and the controller 120 controls the electric push rod 150 to work, and the electric push rod 150 pushes the push plate 160 to move toward the electric control valve 130, thereby pushing the acid binding agent into the reactor body 200 through the electric control valve 130, thereby changing the pH value inside the reactor body 200. When the pH value reaches the preset value of the controller 120, the controller 120 closes the electric push rod 150 and the electric control valve 130, thereby stopping the input of the acid binding agent into the reactor body 200, thereby eliminating the need to add excessive acid binding agent into the reactor body 200, thereby saving a large amount of acid binding agent raw materials.

[0036] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0037] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An online pH detection and control device in a pressurized reaction system, characterized in that: include A control component (100), the control component (100) comprising a pH sensor (110), a controller (120), an electric control valve (130), a storage tank (140), an electric push rod (150) and a push plate (160), the pH sensor (110) being electrically connected to the controller (120), the electric control valve (130) being electrically connected to the controller (120), one end of the storage tank (140) being connected to a liquid outlet pipe (141), the electric control valve (130) being connected to the liquid outlet pipe (141), the electric push rod (150) being electrically connected to the controller (120), the electric push rod (150) being connected to the other end of the storage tank (140), the push plate (160) being connected to the telescopic end of the electric push rod (150), and the push plate (160) being slidably disposed inside the storage tank (140); A reactor body (200), a detection end of the pH sensor (110) is fixedly inserted into the interior of the reactor body (200), the controller (120) is connected to the outer wall of the reactor body (200), and one end of the liquid outlet pipe (141) is fixedly connected to the interior of the reactor body (200).

2. The online pH detection and control device in a pressurized reaction system according to claim 1, characterized in that: The outer wall of the reactor body (200) is provided with a connecting plate (201), and the controller (120) is connected to one side of the connecting plate (201).

3. The online pH detection and control device in a pressurized reaction system according to claim 1, characterized in that: A display screen (121) is provided on one side of the controller (120), and buttons (122) are provided below the display screen (121). A plurality of buttons (122) are provided, and the plurality of buttons (122) are evenly arranged in two rows.

4. The online pH detection and control device in a pressurized reaction system according to claim 1, characterized in that: One end of the storage tank (140) close to the electric push rod (150) is connected to a first breathing valve (170), and the first breathing valve (170) is located below the electric push rod (150).

5. The online pH detection and control device in a pressurized reaction system according to claim 1, characterized in that: The telescopic end of the electric push rod (150) slides through the end wall of the storage tank (140), and the telescopic end of the electric push rod (150) is slidably inserted into the interior of the storage tank (140).

6. The online pH detection and control device in a pressurized reaction system according to claim 1, characterized in that: The wall fixing sleeve of the push plate (160) is provided with a rubber sealing gasket (161), and the outer wall of the rubber sealing gasket (161) is slidably fitted with the inner wall of the storage tank (140).

7. The online pH detection and control device in a pressurized reaction system according to claim 1, characterized in that: The outer wall of the reactor body (200) is provided with a reinforcing rod (202), and one end of the storage tank (140) is fixedly connected to one end of the reinforcing rod (202).

8. The online pH detection and control device in a pressurized reaction system according to claim 1, characterized in that: An L-shaped liquid discharge pipe (142) is provided at one end of the storage tank (140) close to the reactor body (200), and a second breathing valve (143) is provided on the tube body of the L-shaped liquid discharge pipe (142).

9. The online pH detection and control device in a pressurized reaction system according to claim 1, characterized in that: The top of the storage tank (140) is connected to a liquid inlet funnel (144), and the bottom of the liquid inlet funnel (144) is provided with a first valve (145).

10. The online pH detection and control device in a pressurized reaction system according to claim 9, characterized in that: The top of the storage tank (140) is connected to a second valve (146), and the second valve (146) is located on one side of the liquid inlet funnel (144).