Automatic reaction kettle pH control system

Abstract

The utility model discloses an automatic reaction kettle pH control system, which belongs to the technical field of reaction kettle pH control and comprises a discharge pipe, a salt pump connecting pipe, an alkali pump connecting pipe, an ammonia pump connecting pipe, a detection assembly and a control assembly. When data of a pressure sensor and a temperature sensor in a detection assembly and a control assembly are abnormal, a DCS system closes all first electromagnetic valves and gives an alarm, so that a discharge pipe does not discharge materials outwards, a salt pump connecting pipe, an alkali pump connecting pipe and an ammonia pump connecting pipe are closed, and the salt pump connecting pipe, the alkali pump connecting pipe and the ammonia pump connecting pipe are closed. The condition that the salt pump, the alkali pump and the ammonia pump are not closed in time and continuously convey to the interior of the reaction kettle body is avoided, so that the yield of products can be ensured, and an operator can find and handle abnormal conditions of the reaction kettle body in time.

Description

Technical Field

[0001] This invention belongs to the field of pH control technology for reaction vessels, specifically, it relates to an automated pH control system for reaction vessels. Background Technology

[0002] In a broad sense, a reaction vessel is a container where physical or chemical reactions occur. Through structural design and parameter configuration, it achieves the heating, evaporation, cooling, and low-to-high-speed mixing functions required by the process. Reaction vessels are widely used in petroleum, chemical, rubber, pesticide, dye, pharmaceutical, and food industries. They are pressure vessels used to complete processes such as vulcanization, nitration, hydrogenation, hydrocarbonation, polymerization, and condensation. Examples include reactors, reaction vessels, decomposition vessels, and polymerization kettles. Materials typically include carbon manganese steel, stainless steel, zirconium, nickel-based alloys (Hastelloy, Monel, Inconel), and other composite materials.

[0003] Chinese utility model patent CN216093579U discloses an automated device for controlling a reactor with dual pH meters, including a reaction component, a measurement component, and a control component. The reaction component includes a reactor, a salt pump, an alkali pump, and an ammonia pump connected to the reactor. The measurement component, located inside the reactor, includes a pH meter and a pH transmitter connected to the pH meter. The control component, connected to the measurement component, includes a DCS system, a host computer, and frequency converters for the salt pump, alkali pump, and water pump connected to the host computer. This automated device for controlling a reactor with dual pH meters uses dual pH values ​​to control the pH value inside the reactor, achieving truly continuous and uninterrupted automated control. The pH accuracy is guaranteed to be ±0.01, effectively ensuring the quality of the precursors. By using the DCS system, field data can be transmitted to the central control unit in real time, allowing simultaneous control of multiple reactors while maintaining operational accuracy and reducing the impact of human factors on the product.

[0004] While the aforementioned existing technology allows one pH meter to perform testing while another is being calibrated, it cannot promptly cut off all feeding and discharging steps when abnormal data is detected inside the reactor, thus failing to ensure product qualification rate. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] To address the problem mentioned in the background art that when data anomalies occur inside the reactor, all feeding and discharging steps cannot be promptly cut off, thus failing to ensure product qualification rate, this utility model adopts the following technical solution.

[0007] An automated pH control system for a reactor includes an installation frame mounted on the outside of the reactor body. Support legs are fixedly connected to the four corners of the bottom of the reactor body. A feed port is provided on one side of the upper end of the reactor body. A salt pump connection pipe, an alkali pump connection pipe, and an ammonia pump connection pipe are detachably connected to the outer wall of the reactor body. A discharge pipe is installed at the bottom of the reactor body. The salt pump connection pipe, alkali pump connection pipe, and ammonia pump connection pipe are respectively connected to the salt pump, alkali pump, and ammonia pump. A control component is installed on the reactor body. The control component detects the internal temperature, pressure, and pH value of the reactor body. When the internal temperature and pressure values ​​of the reactor body are abnormal, the control component shuts off the salt pump connection pipe, alkali pump connection pipe, and ammonia pump connection pipe.

[0008] Preferably, a detection component is installed on the reactor body to detect the temperature, pressure, and pH value inside the reactor body.

[0009] Preferably, a stirring assembly is installed at the upper end of the reactor body, and the stirring assembly stirs the inside of the reactor body.

[0010] Preferably, the control components include a first solenoid valve and a DCS system. The first solenoid valve can be detachably connected to the discharge pipe, the salt pump connection pipe, the alkali pump connection pipe, and the ammonia pump connection pipe. The DCS system controls the opening and closing of the first solenoid valve.

[0011] Preferably, the stirring assembly includes an explosion-proof motor, a reducer, a coupling, a transmission rod, and a stirring paddle. The transmission rod is rotatably connected inside the reactor body, and the end of the transmission rod inserted into the reactor body is fixedly connected to the stirring paddle. The upper end of the reactor body is detachably connected to a coupling, and the upper end of the coupling is detachably connected to a reducer. The coupling drives the reducer and the transmission rod to rotate. The upper end of the reducer is detachably connected to an explosion-proof motor, which drives the reducer to rotate in conjunction with the coupling to make the transmission rod rotate.

[0012] Preferably, the detection components include a pressure sensor, a temperature sensor, and a pH sensor. The upper end of the reactor body is threadedly connected to a threaded mounting base, and each threaded mounting base is detachably connected to a pH sensor, a pressure sensor, and a temperature sensor.

[0013] Preferably, the outer wall of the reactor body is equipped with a cooling water inlet pipe, a cold air inlet pipe, a hot water inlet pipe, and a steam connection pipe. An electromagnetic three-way valve is installed on the outer wall of the reactor body near the bottom. A third electromagnetic valve is detachably connected to the cooling water inlet pipe, and a second electromagnetic valve is detachably connected to the steam connection pipe. The reactor body has a jacket. The cooling water inlet pipe delivers cooling water to the inside of the jacket to cool the interior of the reactor body. The steam connection pipe delivers heated steam to the interior to heat the reactor body. The cold air inlet pipe cools the interior of the reactor body, and the hot water inlet pipe heats the interior of the reactor body. A first port of the electromagnetic three-way valve is installed at the bottom of the reactor body. The second port of the electromagnetic three-way valve discharges cooling water or hot water, and the third port of the electromagnetic three-way valve discharges steam or cold air. Cooling water is discharged outwards from the electromagnetic three-way valve. The DCS system controls the opening and closing of the third and second electromagnetic valves.

[0014] Preferably, the reactor body has two vertically arranged feed pipes inside. The ammonia pump connecting pipe is connected to one of the feed pipes, and the salt pump connecting pipe and the alkali pump connecting pipe are connected to the other feed pipe. The bottom end of both feed pipes is provided with a mixing bend. Multiple branch pipes are fixed on the side of the two mixing bends that are close to each other. The branch pipes connected to the two mixing bends are arranged alternately, and multiple discharge holes are opened on the branch pipes. A mixing screw is fixed inside the feed pipe connected to the salt pump connecting pipe and the alkali pump connecting pipe, and the blades on the mixing screw are arranged in opposite directions.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. When the data from the pressure and temperature sensors in the detection and control components are abnormal, the DCS system shuts down all first solenoid valves and issues an alarm. This prevents the discharge pipe from discharging material and closes the connection pipes for the salt pump, alkali pump, and ammonia pump. This prevents the salt pump, alkali pump, and ammonia pump from continuing to pump material into the reactor body if they are not shut down in time, thus ensuring the product yield and enabling operators to promptly detect and handle any abnormalities in the reactor body.

[0017] 2. The threaded mounting base allows for easy simultaneous installation or removal of the pH sensor, pressure sensor, and temperature sensor, making their installation more convenient.

[0018] 3. Two feed pipes introduce different materials respectively. The mixing bend, the staggered branch pipes, and the mixing screw with alternating positive and negative blades can ensure that materials such as salt, alkali, and ammonia are fully mixed before entering the main body of the reactor, thereby improving reaction efficiency and product quality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an automated pH control system for a reaction vessel according to the present invention.

[0020] Figure 2 This is a schematic diagram of the control component structure in this utility model;

[0021] Figure 3 This is a schematic diagram of the stirring assembly structure in this utility model;

[0022] Figure 4 This is a schematic diagram of the detection component structure in this utility model;

[0023] Figure 5 This is a schematic diagram of the feed tube structure in this utility model;

[0024] Figure 6 This is a cross-sectional view of the feed tube in this utility model.

[0025] The correspondence between the labels and component names in the attached figures is as follows:

[0026] 100. Reactor body; 101. Mounting frame; 102. Support leg; 103. Feed port; 104. Salt pump connection pipe; 106. First solenoid valve; 107. Alkali pump connection pipe; 108. Second solenoid valve; 109. Steam connection pipe; 110. Cold air inlet pipe; 111. Hot water inlet pipe; 112. Ammonia pump connection pipe; 113. Cooling water inlet pipe; 114. Third solenoid valve; 115. Solenoid three-way valve; 116. Discharge pipe; 117. Pressure sensor; 118. Temperature sensor;

[0027] 200. Explosion-proof motor; 201. Reducer; 202. Coupling; 203. Drive rod; 204. Agitator;

[0028] 300. Threaded mounting base; 301. pH sensor.

[0029] 4. Feed pipe; 401. Mixing bend; 402. Branch pipe; 403. Discharge hole; 404. Mixing screw. Detailed Implementation

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0033] like Figure 1 As shown, this is a schematic diagram of an automated reactor pH control system according to a preferred embodiment of the present invention. The automated reactor pH control system of this embodiment includes an installation frame 101 installed on the outside of the reactor body 100 and a DCS system. Support legs 102 are fixedly connected to the four corners of the bottom of the reactor body 100. A feed port 103 is provided on one side of the upper end of the reactor body 100. In this embodiment, the reactor body 100 can be fixed by the installation frame 101 and the support legs 102, and the raw materials to be reacted can be added into the reactor body 100 through the feed port 103.

[0034] like Figure 2 as well as Figure 4As shown, this is a schematic diagram of the control component structure in this embodiment. The outer wall of the reactor body 100 is detachably connected to a salt pump connecting pipe 104, an alkali pump connecting pipe 107, and an ammonia pump connecting pipe 112. A discharge pipe 116 is installed at the bottom of the reactor body 100. The salt pump connecting pipe 104, the alkali pump connecting pipe 107, and the ammonia pump connecting pipe 112 are respectively connected to the salt pump, the alkali pump, and the ammonia pump. A first solenoid valve 106 is detachably connected to each of the discharge pipe 116, the salt pump connecting pipe 104, the alkali pump connecting pipe 107, and the ammonia pump connecting pipe 112. A pH sensor 301 is installed on the outside of the reactor body 100 to detect the pH value inside the reactor body 100. A pressure sensor is detachably connected to the upper end of the reactor body 100. The DCS receives data from the pH sensor 301, pressure sensor 117, and temperature sensor 118, and controls the opening and closing of the first solenoid valve 106. In this embodiment, when the data from the pressure sensor 117 and temperature sensor 118 are abnormal, the DCS system closes all first solenoid valves 106 and issues an alarm, thereby preventing the discharge pipe 116 from discharging material. Furthermore, the salt pump connection pipe 104, alkali pump connection pipe 107, and ammonia pump connection pipe 112 are closed to prevent the salt pump, alkali pump, and ammonia pump from continuing to pump into the reactor body 100 without timely shutdown. This ensures the product yield and allows operators to promptly detect and address any abnormalities in the reactor body 100.

[0035] like Figure 2As shown, the outer wall of the reactor body 100 is equipped with a cooling water inlet pipe 113, a cold air inlet pipe 110, a hot water inlet pipe 111, and a steam connection pipe 109. A solenoid three-way valve 115 is installed on the outer wall of the reactor body 100 near the bottom. A third solenoid valve 114 is detachably connected to the cooling water inlet pipe 113, and a second solenoid valve 108 is detachably connected to the steam connection pipe 109. The reactor body 100 has a jacket. The cooling water inlet pipe 113 delivers cooling water to the inside of the jacket to cool the interior of the reactor body 100. The steam connection pipe 109 delivers heated steam to the interior to heat the reactor body 100. The cold air inlet pipe 110 cools the interior of the reactor body 100, and the hot water inlet pipe 111 heats the interior of the reactor body 100. The bottom of the main body 100 is equipped with a first port of a solenoid three-way valve 115. The second port of the solenoid three-way valve 115 discharges cooling water or hot water, and the third port of the solenoid three-way valve 115 is used to discharge steam or cold air. Cooling water is discharged outward from the solenoid three-way valve 115. The DCS system controls the opening and closing of the third solenoid valve 114 and the second solenoid valve 108. In this embodiment, when the reactor body 100 malfunctions, the DCS system controls the third solenoid valve 114 and the second solenoid valve 108 to close. The DCS system controls the first port of the solenoid three-way valve 115 to connect with the second port or the first port to the third port, thereby cutting off the supply of steam, hot water, cold air and cooling water to avoid greater losses. It can also replace different heating or cooling media according to actual needs.

[0036] It is worth noting that the first solenoid valve 106 and the DCS system mentioned above are the control components in this embodiment. The control components include, but are not limited to, the first solenoid valve 106 and the DCS system. Any component that can stop all feeding and discharging of the reactor body 100 when there is an abnormality inside the reactor body 100 can be applied to this embodiment.

[0037] like Figure 3As shown, this is a schematic diagram of the stirring assembly structure in this embodiment. A transmission rod 203 is rotatably connected inside the reactor body 100. A stirring paddle 204 is fixedly connected to the end of the transmission rod 203 that is inserted into the reactor body 100. A coupling 202 is detachably connected to the upper end of the reactor body 100. A reducer 201 is detachably connected to the upper end of the coupling 202. The coupling 202 drives the reducer 201 and the transmission rod 203. An explosion-proof motor 200 is detachably connected to the upper end of the reducer 201. The explosion-proof motor 200 drives the reducer 201 to rotate, which in turn causes the transmission rod 203 to rotate. In this embodiment, the reducer 201 reduces the rotation of the explosion-proof motor 200, thereby driving the transmission rod 203 to rotate, which in turn causes the stirring paddle 204 to rotate inside the reactor body 100, thus enabling stirring inside.

[0038] It is worth noting that the explosion-proof motor 200, reducer 201, coupling 202, transmission rod 203 and stirring paddle 204 mentioned above are the stirring components in this embodiment. The stirring components include, but are not limited to, the explosion-proof motor 200, reducer 201, coupling 202, transmission rod 203 and stirring paddle 204. Any component that can stir the inside of the reactor body 100 can be used in this embodiment.

[0039] like Figure 4 As shown, this is a schematic diagram of the detection component structure in this embodiment. The upper end of the reactor body 100 is threadedly connected to a threaded mounting base 300. Each threaded mounting base 300 is detachably connected to a pH sensor 301, a pressure sensor 117, and a temperature sensor 118. In this embodiment, the threaded mounting base 300 allows for convenient simultaneous installation or removal of the pH sensor 301, pressure sensor 117, and temperature sensor 118, making the installation of the pH sensor 301, pressure sensor 117, and temperature sensor 118 more convenient.

[0040] It is worth noting that the pressure sensor 117, temperature sensor 118 and pH sensor 301 mentioned above are the detection components in this embodiment. The detection components include, but are not limited to, the pressure sensor 117, temperature sensor 118 and pH sensor 301. Any component that can detect the internal temperature, pressure and pH value of the reactor body 100 can be used in this embodiment.

[0041] like Figure 4 and Figure 5As shown, the reactor body 100 has two vertically arranged feed pipes 4 inside. The ammonia pump connecting pipe 112 is connected to one of the feed pipes 4, and the salt pump connecting pipe 104 and the alkali pump connecting pipe 107 are connected to the other feed pipe 4. The bottom end of both feed pipes 4 is provided with a mixing bend 401. On the side of the two mixing bends 401 that are close to each other, multiple branch pipes 402 are fixed. The branch pipes 402 connected to the two mixing bends 401 are arranged alternately, and multiple discharge holes 403 are opened on the branch pipes 402. A mixing screw 404 is fixed inside the feed pipe 4 connected to the salt pump connecting pipe 104 and the alkali pump connecting pipe 107, and the blades on the mixing screw 404 are arranged alternately in opposite directions.

[0042] When the salt pump, alkali pump, and ammonia pump are operating, salt and alkali enter the corresponding feed pipes 4 through the salt pump connecting pipe 104 and the alkali pump connecting pipe 107. Inside the feed pipes 4, the materials are blocked by the mixing screw 404, forming a vortex that improves the mixing effect of the two materials. Because the blades of the mixing screw 404 have alternating helical directions, the materials continuously change their flow direction during their advance, achieving initial mixing. Ammonia enters another feed pipe 4 through the ammonia pump connecting pipe 112. After reaching the mixing bends 401 at the bottom of the two feed pipes 4, the materials are discharged through the discharge holes 403 on the branch pipes 402. Because the branch pipes 402 on the two mixing bends 401 are staggered, different materials can directly form opposing currents, resulting in better mixing and thus improving reaction efficiency and product quality.

[0043] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. An automated pH control system for a reactor, comprising a mounting frame (101) installed outside a reactor body (100), support legs (102) fixedly connected to the four corners of the bottom of the reactor body (100), and a feed port (103) provided on one side of the upper end of the reactor body (100), characterized in that, The outer wall of the reactor body (100) is detachably connected to a salt pump connecting pipe (104), an alkali pump connecting pipe (107), and an ammonia pump connecting pipe (112). A discharge pipe (116) is installed at the bottom of the reactor body (100). The salt pump connecting pipe (104), the alkali pump connecting pipe (107), and the ammonia pump connecting pipe (112) are respectively connected to the salt pump, the alkali pump, and the ammonia pump. A control component is installed on the reactor body (100). The control component detects the internal temperature, pressure, and pH value of the reactor body (100). When the internal temperature and pressure values ​​of the reactor body (100) are abnormal, the control component shuts off the salt pump connecting pipe (104), the alkali pump connecting pipe (107), and the ammonia pump connecting pipe (112).

2. The automated pH control system for a reactor according to claim 1, wherein, The reactor body (100) is equipped with a detection component that detects the temperature, pressure and pH value inside the reactor body (100).

3. The automated reactor pH control system of claim 2, wherein, A stirring assembly is installed at the upper end of the reactor body (100), and the stirring assembly stirs the interior of the reactor body (100).

4. The automated reactor pH control system of claim 3, wherein, The control components include a first solenoid valve (106) and a DCS system. The first solenoid valve (106) can be detachably connected to the discharge pipe (116), the salt pump connecting pipe (104), the alkali pump connecting pipe (107), and the ammonia pump connecting pipe (112). The DCS system controls the opening and closing of the first solenoid valve (106).

5. The automated reactor pH control system of claim 4, wherein, The stirring assembly includes an explosion-proof motor (200), a reducer (201), a coupling (202), a transmission rod (203), and a stirring paddle (204). The transmission rod (203) is rotatably connected inside the reactor body (100). The end of the transmission rod (203) inserted into the reactor body (100) is fixedly connected to the stirring paddle (204). The upper end of the reactor body (100) is detachably connected to the coupling (202). The upper end of the coupling (202) is detachably connected to the reducer (201). The coupling (202) drives the reducer (201) and the transmission rod (203) to drive each other. The upper end of the reducer (201) is detachably connected to the explosion-proof motor (200). The explosion-proof motor (200) drives the reducer (201) to rotate, which in turn drives the transmission rod (203) to rotate in conjunction with the coupling (202).

6. The automated reactor pH control system of claim 5, wherein, The detection components include a pressure sensor (117), a temperature sensor (118), and a pH sensor (301). The upper end of the reactor body (100) is threadedly connected to a threaded mounting base (300), and each threaded mounting base (300) is detachably connected to a pH sensor (301), a pressure sensor (117), and a temperature sensor (118).

7. The automated reactor pH control system of claim 6, wherein, The outer wall of the reactor body (100) is equipped with a cooling water inlet pipe (113), a cold air inlet pipe (110), a hot water inlet pipe (111), and a steam connection pipe (109). An electromagnetic three-way valve (115) is installed on the outer wall of the reactor body (100) near the bottom. A third electromagnetic valve (114) is detachably connected to the cooling water inlet pipe (113), and a second electromagnetic valve (108) is detachably connected to the steam connection pipe (109). The reactor body (100) has a jacket. The cooling water inlet pipe (113) delivers cooling water to the inside of the jacket to cool the interior of the reactor body (100). The steam connection pipe (109) delivers cooling water to the interior of the jacket to cool the interior of the reactor body (100). Heated steam is delivered to the interior to heat the reactor body (100), cold air enters through pipe (110) to cool the interior of the reactor body (100), and hot water enters through pipe (111) to heat the interior of the reactor body (100). The bottom of the reactor body (100) is equipped with the first port of a solenoid three-way valve (115), the second port of the solenoid three-way valve (115) discharges cooling water or hot water, and the third port of the solenoid three-way valve (115) is used to discharge steam or cold air. Cooling water is discharged from the solenoid three-way valve (115). The DCS system controls the opening and closing of the third solenoid valve (114) and the second solenoid valve (108).

8. The automated reactor pH control system of claim 7, wherein, The reactor body (100) is provided with two vertically arranged feed pipes (4). The ammonia pump connecting pipe (112) is connected to one of the feed pipes (4), and the salt pump connecting pipe (104) and the alkali pump connecting pipe (107) are connected to the other feed pipe (4). The bottom end of both feed pipes (4) is provided with a mixing bend (401). Multiple branch pipes (402) are fixed on the side of the two mixing bends (401) that are close to each other. The branch pipes (402) connected to the two mixing bends (401) are arranged alternately, and multiple discharge holes (403) are opened on the branch pipes (402). The feed pipe (4) connected to the salt pump connecting pipe (104) and the alkali pump connecting pipe (107) is fixed with a mixing screw (404), and the blades on the mixing screw (404) are arranged alternately in opposite directions.

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