Pressure transmitter on-line monitoring mixed clarification extraction tank and tank state early warning method

Abstract

The present application relates to the technical field of solvent extraction, and particularly relates to a pressure transmitter online monitoring mixed clarification extraction tank and tank state early warning method, which comprises a remote information receiver, an audible and visual alarm, a deformation spring, a pressure transmitter, a computer processor, a stirrer, a pulley, a liquid level sensor, a pendant, a traction rope, an extraction tank mixing chamber and an extraction tank clarification chamber; when the density of mixed phase fluid changes, the buoyancy received by the pendant also changes, so that the traction rope causes a changeable pulling force on the pressure transmitter; the pressure transmitter uploads the pulling force data to the computer processor to convert into mixed phase fluid density data, and compares with a standard mixed phase density index; the aqueous phase flow, the organic phase flow and the stirring speed are automatically checked in real time; when the computer processor finds a fault that cannot be automatically processed, the audible and visual alarm and the remote information receiver send an alarm to the operator, so that the operator can intervene in processing the abnormality in the first time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solvent extraction, in particular to a pressure transmitter online monitoring mixed clear extraction tank and tank body state early warning method. BACKGROUND

[0002] In the process of solvent extraction, the state of the mixed phase in the mixed clear extraction tank not only reflects the mixing state, but also reflects the proportion relationship between the organic phase and the aqueous phase. Therefore, maintaining a suitable mixed phase state is a decisive internal factor for the separation effect of the continuous production line in the solvent extraction separation line. The abnormal occurrence of external factors such as normal operation of the production line, organic phase and aqueous phase flow fluctuation, liquid flow port blockage and stirring failure will cause the state of the mixed phase to change. If it is not discovered and handled in time, it will affect the separation effect, and even cause production accidents.

[0003] At present, in the existing solvent extraction process, the state monitoring of the mixed clear extraction tank is limited to mechanical aspects, such as stirring speed and motor power fluctuation, and cannot monitor other abnormal conditions that affect the separation effect of the mixed clear extraction tank, such as material flow abnormality and stirring impeller damage. SUMMARY

[0004] The purpose of the present application is to provide a pressure transmitter online monitoring mixed clear extraction tank and tank body state early warning method, which aims to solve the problem that the existing solvent extraction process state detection technology cannot monitor material flow abnormality and stirring impeller damage.

[0005] To achieve the above purpose, in a first aspect, the present application provides a pressure transmitter online monitoring mixed clear extraction tank, comprising a remote information receiver, an audible and visual alarm, a shape-changing spring, a pressure transmitter, a computer processor, a stirrer, a pulley, a liquid level sensor, a pendant, a traction rope, an extraction tank mixing chamber and an extraction tank clarification chamber.

[0006] The extraction tank mixing chamber is arranged on one side of the extraction tank clarification chamber, the stirrer is arranged on the top of the extraction tank mixing chamber, the pulleys are arranged on one side of the extraction tank mixing chamber and the extraction tank clarification chamber respectively, the traction rope is arranged on one side of the pulley, the pendant is fixedly connected with the traction rope and located in the extraction tank clarification chamber, the shape-changing spring is fixedly connected with the traction rope and located on the side of the traction rope away from the pendant, the pressure transmitter is fixedly connected with the shape-changing spring and located on the side of the shape-changing spring away from the traction rope, the liquid level sensor is connected with the traction rope and located above the pendant, and the computer processor is connected with the remote information receiver, the audible and visual alarm and the pressure transmitter respectively.

[0007] The computer processor is connected with the sound-light alarm and the pressure transmitter through wireless network and wired network, and the wireless network includes WiFi and Bluetooth.

[0008] The computer processor is connected with the remote information receiver through wireless network.

[0009] In the second aspect, the application further provides a pressure transmitter online monitoring mixed clarification extraction tank state early warning method, which comprises the following steps:

[0010] The tension data is uploaded to the computer processor in real time through the pressure transmitter;

[0011] The computer processor converts the tension data into mixed phase fluid density data and compares with the standard mixed phase fluid density for adjustment and self-checking;

[0012] When the computer processor finds an unhandled fault, the remote information receiver and the sound-light alarm are used to warn the staff.

[0013] The tension data is the change of buoyancy of the overhanging in the clarification chamber of the extraction tank.

[0014] The density of the organic phase put into the mixed chamber of the extraction tank is 0.8-0.9 g / cm 3 , and the density of the aqueous phase is 1.1-1.5 g / cm 3 .

[0015] The pressure transmitter online monitoring mixed clarification extraction tank of the present application, the water phase and the organic phase enter the mixing chamber of the extraction tank through the feed port, fully mix and contact through the stirrer, forming a mixed phase fluid, the mixed phase fluid enters the clarification chamber through the overflow plate on one side of the extraction tank mixing chamber, one end of the traction rope is connected to one end of the shape-changing spring through two groups of pulleys, the other end of the shape-changing spring is connected to one end of the pressure transmitter, the other end of the pressure transmitter is connected to the ground fixed position, and the liquid level sensor is connected to the traction rope directly above the pendant; the liquid level sensor is used to detect the liquid level of the mixed phase fluid in the clarification chamber of the extraction tank, when the density of the mixed phase fluid in the clarification chamber of the extraction tank changes due to the difference in the proportion of the water phase and the organic phase or the abnormality of the stirrer, the buoyancy of the pendant also changes, thereby causing the traction rope to exert a variable tension on the shape-changing spring and the pressure transmitter, the pressure transmitter uploads real-time tension data to the computer processor, the computer processor records the tension data and converts it into mixed phase fluid density data, and compares it with the standard mixed phase density index in real time, automatically checks the water phase flow, the organic phase flow and the stirring speed in real time, finds abnormalities, automatically controls and adjusts in real time, realizes self-checking, and when the computer processor finds a fault that cannot be automatically processed, the operator is alerted through the audible and visual alarm and the remote information receiver, so that the operator can intervene and handle the abnormality in the first time, the mixed clarification extraction tank determines the mixed phase state through the computer processor pressure transmission signal, performs secondary data processing to determine the abnormal working condition of the mixed clarification extraction tank, makes disposal suggestions and sends an immediate early warning signal to remind the post operator to dispose, creates conditions for maintaining the separation effect of the production line to realize smooth operation; various abnormal working conditions that may affect the separation effect of the mixed clarification extraction tank are covered, the use of the present application can greatly reduce the work requirements of manual inspection, and solves the problem that the existing solvent extraction process state detection technology cannot monitor material flow abnormalities and stirrer damage. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0017] Figure 1 It is a schematic diagram of the pressure transmitter online monitoring mixed clarification extraction tank provided by the present application.

[0018] Figure 2 is a flow chart of the pressure transmitter online monitoring mixed clarification extraction tank state early warning method provided by the present application.

[0019] In the figure: 1-remote information receiver, 2-acoustic light alarm, 3-deformation spring, 4-pressure transmitter, 5-computer processor, 6-stirrer, 7-pulley, 8-liquid level sensor, 9-suspension, 10-pulling rope, 11-extraction tank mixing chamber, 12-extraction tank clarification chamber. DETAILED DESCRIPTION

[0020] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0021] In the first aspect, referring to Figure 1 , the present application provides a pressure transmitter online monitoring mixed clarification extraction tank, comprising a remote information receiver 1, an acoustic light alarm 2, a deformation spring 3, a pressure transmitter 4, a computer processor 5, a stirrer 6, a pulley 7, a liquid level sensor 8, a suspension 9, a pulling rope 10, an extraction tank mixing chamber 11 and an extraction tank clarification chamber 12.

[0022] The extraction tank mixing chamber 11 is arranged on one side of the extraction tank clarification chamber 12, the stirrer 6 is arranged on the top of the extraction tank mixing chamber 11, the pulley 7 is arranged on one side of the extraction tank mixing chamber 11 and the extraction tank clarification chamber 12 respectively, the pulling rope 10 is arranged on one side of the pulley 7, the suspension 9 is fixedly connected with the pulling rope 10 and located in the extraction tank clarification chamber 12, the deformation spring 3 is fixedly connected with the pulling rope 10 and located on the side of the pulling rope 10 away from the suspension 9, the pressure transmitter 4 is fixedly connected with the deformation spring 3 and located on the side of the deformation spring 3 away from the pulling rope 10, the liquid level sensor 8 is connected with the pulling rope 10 and located above the suspension 9, and the computer processor 5 is connected with the remote information receiver 1, the acoustic light alarm 2 and the pressure transmitter 4 respectively.

[0023] In the present embodiment, the water phase and the organic phase enter the extraction tank mixing chamber 11 through the feed port, are fully mixed and contacted by the stirrer 6 to form a mixed phase fluid, which enters the clarification chamber through the overflow plate on one side of the extraction tank mixing chamber 11 and slowly rephases, one end of the traction rope 10 is connected to the other end of the shape-changing spring 3 through two groups of pulleys 7, and the other end of the shape-changing spring 3 is connected to one end of the pressure transmitter 4, the other end of the pressure transmitter 4 is connected to the ground fixed position, and the liquid level sensor 8 is connected to the traction rope 10 directly above the pendant 9; the liquid level sensor 8 is used to detect the liquid level of the mixed phase fluid in the extraction tank clarification chamber 12, when the density of the mixed phase fluid in the extraction tank clarification chamber 12 changes due to the difference in the proportion of the water phase and the organic phase or the abnormality of the stirrer 6, the buoyancy received by the pendant 9 also changes, thereby causing the traction rope 10 to cause a variable tension to the shape-changing spring 3 and the pressure transmitter 4, the pressure transmitter 4 uploads real-time tension data to the computer processor 5, the computer processor 5 records the tension data and converts it into mixed phase fluid density data, and compares it with the standard mixed phase density index in real time, automatically checks the water phase flow, the organic phase flow and the stirring speed in real time, finds abnormalities, automatically controls and adjusts in real time, realizes self-checking, when the computer processor 5 finds a fault that cannot be automatically processed, the operator is alerted through the audible and visual alarm 2 and the remote information receiver 1, so that the operator can intervene and handle the abnormality in the first time, the mixed clarification extraction tank determines the mixed phase state through the computer processor pressure transmission signal, carries out secondary data processing to determine the abnormal working condition of the mixed clarification extraction tank, makes disposal suggestions and sends immediate early warning signals to remind the post operator to dispose, creates conditions for maintaining the separation effect of the production line to realize smooth operation; It fully covers various abnormal working conditions that may affect the separation effect of the mixed clarification extraction tank, and greatly reduces the work requirements of manual inspection, solves the problem that the existing solvent extraction process state detection technology cannot monitor material flow abnormalities and stirrer damage.

[0024] Further, the computer processor 5 is connected to the audible and visual alarm 2 and the pressure transmitter 4 through wireless and wired networks, the wireless network includes WiFi and Bluetooth; the computer processor 5 is connected to the remote information receiver 1 through a wireless network.

[0025] Please refer to Figure 2 , in the second aspect, the present application also provides a pressure transmitter online monitoring mixed clarification extraction tank state early warning method, including the following steps:

[0026] S1 The tension data is uploaded to the computer processor 5 in real time through the pressure transmitter 4;

[0027] Specifically, the tension data is the change of the buoyancy of the overhang 9 in the extraction tank clarifying chamber 12. When the mixed phase fluid in the extraction tank clarifying chamber 12 changes in density due to differences in the ratio of the aqueous phase to the organic phase or abnormality of the stirrer 6, the buoyancy experienced by the overhang 9 also changes, thereby causing the traction rope 10 to cause variable tension to the deformation spring 3 and the pressure transmitter 4, and the pressure transmitter 4 uploads the real-time tension data to the computer processor 5.

[0028] S2 The computer processor 5 converts the tension data into mixed phase fluid density data and compares it with the standard mixed phase fluid density for adjustment and self-checking;

[0029] Specifically, the computer processor 5 records the tension data while converting it into mixed phase fluid density data, and compares it with the standard mixed phase density index in real time, automatically checks the aqueous phase flow, organic phase flow, and stirring speed in real time, finds abnormalities, automatically controls and adjusts in real time, and realizes self-checking.

[0030] S3 When the computer processor 5 finds a fault that cannot be handled, it gives an early warning to the staff based on the remote information receiver 1 and the audible and visual alarm 2.

[0031] Specifically, when the computer processor 5 finds a fault that cannot be automatically handled, it sends an alarm to the operator through the audible and visual alarm 2 and the remote information receiver 1, so that the operator can intervene and handle the abnormality in the first place.

[0032] The state of the mixed phase in the mixed clarifying extraction tank is mainly manifested as the ratio of the organic phase to the aqueous phase in the mixed phase, i.e. the phase ratio, and the phase ratio of the two phases in the mixed phase at a specific position in the mixed clarifying extraction tank is closely related to the stirring and mixing effect and the phase ratio of the two phases entering the mixing chamber for reaction, and can be used for early warning of abnormal working conditions of the tank body for disposal.

[0033] Through statistical data, the change of the mixed phase phase ratio (organic phase: aqueous phase) at any point above the water phase liquid level in the clarifying chamber near the outlet of the mixing chamber can be obtained, as shown in Table 1:

[0034]

[0035] In the mixed clarifying extraction tank, the common organic phase density is 0.8-0.9 g / cm 3 , and the common aqueous phase density is 1.1-1.5 g / cm 3and the density of the mixed phase is closely related to the ratio of the organic phase and the water phase, the higher the ratio of the organic phase, the lower the density of the mixed phase, and vice versa. The liquid level of the suspension 9 can be monitored by adjusting the immersion position of the suspension 9, and the change of the tension of the suspension 9 can be monitored by the pressure transmitter 4, so as to reflect the change trend of the phase ratio.

[0036] As shown in Table 2, the change of the tension of the suspension 9 at any position above the liquid level of the water phase in the clarification chamber near the outlet of the mixing chamber is compared with the change of the phase ratio (organic phase: water phase) at the position.

[0037]

[0038]

[0039] The above disclosed is only a preferred embodiment of the pressure transmitter online monitoring mixed clarification extraction tank and tank state early warning method of the present application, of course, cannot limit the scope of the present application, and those skilled in the art can understand that the above-mentioned embodiment can be implemented by all or part of the process, and the equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.

Claims

1. A method for online monitoring and early warning of the tank status of a mixing, clarification, and extraction tank using a pressure transmitter, characterized in that, The pressure transmitter online monitoring mixing-clarification-extraction tank includes a remote information receiver, an audible and visual alarm, a deformation spring, a pressure transmitter, a computer processor, a stirrer, pulleys, a level sensor, a suspension, a traction rope, an extraction tank mixing chamber, and an extraction tank clarification chamber. The mixing chamber of the extraction tank is located on one side of the clarification chamber of the extraction tank. The stirrer is located at the top of the mixing chamber of the extraction tank. The pulleys are respectively located on one side of the mixing chamber and the clarification chamber of the extraction tank. The traction rope is located on one side of the pulleys. The suspension is fixedly connected to the traction rope and located inside the clarification chamber of the extraction tank. The deformation spring is fixedly connected to the traction rope and located on the side of the traction rope away from the suspension. The pressure transmitter is fixedly connected to the deformation spring and located on the side of the deformation spring away from the traction rope. The liquid level sensor is connected to the traction rope and located above the suspension. The computer processor is connected to the remote information receiver, the audible and visual alarm, and the pressure transmitter. Includes the following steps: The tensile force data is uploaded to the computer processor in real time via a pressure transmitter; The computer processor converts the tensile data into mixed-phase fluid density data and compares it with the standard mixed-phase fluid density for adjustment and self-verification. When the computer processor detects an unmanageable fault, it alerts staff based on a remote information receiver and an audible and visual alarm.

2. The method for online monitoring and early warning of the tank status of a mixing and clarification extraction tank using pressure transmitters as described in claim 1, characterized in that, The computer processor is connected to the audible and visual alarm and the pressure transmitter via a wireless network and a wired network, the wireless network including WiFi and Bluetooth.

3. The method for online monitoring and early warning of the tank status of a mixing and clarification extraction tank using pressure transmitters as described in claim 1, characterized in that, The computer processor and the remote information receiver are connected via a wireless network.

4. The method for online monitoring and early warning of the tank status of a mixing and clarification extraction tank using pressure transmitters as described in claim 1, characterized in that, The tension data represents the change in buoyancy of the suspension suspended in the clarification chamber of the extraction tank.

5. The method for online monitoring and early warning of the tank status of a mixing and clarification extraction tank using pressure transmitters as described in claim 1, characterized in that, The density of the organic phase introduced into the mixing chamber of the extraction tank is 0.8-0.9 g / cm³. 3 The aqueous phase density is 1.1-1.5 g / cm³. 3 .

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