Pressure transmission on-line monitoring mixing clarification extraction tank and tank body state early warning method

Abstract

The invention relates to the technical field of solvent extraction, in particular to a pressure transmission online monitoring mixing clarification extraction tank and a tank body state early warning method, and the pressure transmission online monitoring mixing clarification extraction tank 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 suspension, a traction rope, an extraction tank mixing chamber and an extraction tank clarification chamber; when the density of the mixed-phase fluid changes, buoyancy borne by suspension also changes, the traction rope causes variable tension to the pressure transmitter, the pressure transmitter uploads tension data to the computer processor to convert the tension data into mixed-phase fluid density data, the mixed-phase fluid density data are compared with a standard mixed-phase density index, and the density of the mixed-phase fluid is calculated. The water phase flow, the organic phase flow and the stirring rotating speed are automatically checked in real time, and when a computer processor finds a fault which cannot be automatically processed, an alarm is given to an operator through an audible and visual alarm and a remote information receiver, so that the operator intervenes in processing abnormities at the first time.

Description

Technical Field

[0001] The invention relates to the technical field of solvent extraction, and in particular to a pressure transmitter for online monitoring of a mixing clarification extraction tank and a tank state early warning method. Background Art

[0002] In the process of solvent extraction, the state of the mixed phase in the mixed clarification extraction tank not only reflects the stirring and mixing state, but also reflects the ratio of the organic phase to the aqueous phase. Therefore, maintaining a suitable mixed phase state is a decisive internal factor that determines the separation effect of the production line on the continuous production of solvent extraction separation lines. In a normally operating production line, abnormal external factors such as organic and aqueous phase flow fluctuations, liquid flow port blockage, and stirring failure will cause changes in the state of the mixed phase. If 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 status monitoring of the mixed clarification extraction tank is limited to mechanical aspects, such as external factors such as stirring speed and motor power fluctuations. It is unable to monitor abnormal material flow, impeller damage and other abnormal conditions that affect the separation effect of the mixed clarification extraction tank. Summary of the invention

[0004] The purpose of the present invention is to provide a pressure transmitter online monitoring method for a mixing clarification extraction tank and a tank body status early warning method, aiming to solve the problem that the existing solvent extraction process status detection technology cannot monitor abnormal material flow and abnormal agitator impeller damage.

[0005] To achieve the above-mentioned object, in a first aspect, the present invention provides a pressure transmitter for online monitoring of a mixing and clarifying extraction tank, comprising a remote information receiver, an audible and visual alarm, a deformation spring, a pressure transmitter, a computer processor, an agitator, a pulley, a liquid level sensor, a suspension, a traction rope, an extraction tank mixing chamber, and an extraction tank clarifying chamber;

[0006] The extraction tank mixing chamber is arranged on one side of the extraction tank clarifying chamber, the agitator is arranged on the top of the extraction tank mixing chamber, the pulleys are respectively arranged on one side of the extraction tank mixing chamber and the extraction tank clarifying chamber, the traction rope is arranged on one side of the pulley, the suspension is fixedly connected to the traction rope and is located in the extraction tank clarifying chamber, the deformation spring is fixedly connected to the traction rope and is located on the side of the traction rope away from the suspension, the pressure transmitter is fixedly connected to the deformation spring and is located on the side of the deformation spring away from the traction rope, the liquid level sensor is connected to the traction rope and is located above the suspension, and the computer processor is respectively connected to the remote information receiver, the sound and light alarm and the pressure transmitter.

[0007] Wherein, the computer processor is connected with the sound and light alarm and the pressure transmitter via a wireless network and a wired network, and the wireless network includes WiFi and Bluetooth.

[0008] Wherein, the computer processor is connected to the remote information receiver via a wireless network.

[0009] In a second aspect, the present invention also provides a method for early warning of the state of a mixing clarification extraction tank by online monitoring of pressure transmission, comprising the following steps:

[0010] Upload tension data 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 it with the standard mixed-phase fluid density to perform adjustment and self-checking;

[0012] When the computer processor finds a fault that cannot be handled, it warns the staff based on the remote information receiver and the sound and light alarm.

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

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

[0015] The pressure transmitter of the present invention monitors the mixed clarification extraction tank online, the aqueous phase and the organic phase enter the mixing chamber of the extraction tank through the feed port, are fully mixed and contacted by the agitator to form a mixed phase fluid, and the mixed phase fluid enters the clarification chamber through the overflow plate on one side of the mixing chamber of the extraction tank to slowly re-phase, one end of the traction rope passes through two groups of pulleys to sink the suspension into the mixed phase fluid, and the other end is connected to one end of the deformation spring, the other end of the deformation spring is connected to one end of the pressure transmitter, and the other end of the pressure transmitter is connected to a fixed position on the ground, and the liquid level sensor is connected to the traction rope directly above the suspension; 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 mixed phase fluid in the clarification chamber of the extraction tank changes in density due to the difference in the ratio of the aqueous phase to the organic phase or the abnormality of the agitator, the buoyancy of the suspension also changes, so that the traction rope causes a variable tension on the deformation spring and the pressure transmitter, and the pressure transmitter uploads real-time tension data to the A 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 rate, organic phase flow rate and stirring speed in real time, and automatically controls and adjusts in real time when an abnormality is found to achieve self-checking. When the computer processor finds a fault that cannot be automatically handled, it sends an alarm to the operator through the sound and light alarm and the remote information receiver so that the operator can intervene to handle the abnormality at the first time. The mixed clarification extraction tank determines the mixed phase state through the pressure transmission signal processed by the computer machine, performs secondary data processing to determine the abnormal working condition of the mixed clarification extraction tank, makes disposal suggestions and sends out immediate warning signals to remind the post operator to deal with it, so as to create conditions for maintaining the separation effect of the production line and achieving smooth operation; it comprehensively covers various abnormal working conditions that may affect the separation effect of the mixed clarification extraction tank. Its use can greatly reduce the work requirements of manual inspections, and solve the problem that the existing solvent extraction process status detection technology cannot monitor the abnormal material flow and the abnormality of the broken impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the pressure transmitter on-line monitoring mixing and clarifying extraction tank provided by the present invention.

[0018] Figure 2 It is a flow chart of the method for early warning of the state of a mixing clarification extraction tank by online monitoring of pressure transmission provided by the present invention.

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

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0021] First, see Figure 1 The present invention provides a pressure transmitter for online monitoring of a mixing and clarifying extraction tank, comprising a remote information receiver 1, an audible and visual alarm 2, a deformation spring 3, a pressure transmitter 4, a computer processor 5, an agitator 6, a pulley 7, a liquid level sensor 8, a suspension 9, a traction rope 10, an extraction tank mixing chamber 11 and an extraction tank clarifying chamber 12;

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

[0023] In this embodiment, the aqueous phase and the organic phase enter the extraction tank mixing chamber 11 through the feed port, are fully mixed and contacted by the agitator 6 to form a mixed phase fluid, and the mixed phase fluid passes through the overflow plate on one side of the extraction tank mixing chamber 11 and enters the clarification chamber to slowly re-phase. One end of the traction rope 10 passes through two groups of pulleys 7 to sink the suspension 9 into the mixed phase fluid, and the other end is connected to one end of the deformation spring 3, and the other end of the deformation spring 3 is connected to one end of the pressure transmitter 4, and the other end of the pressure transmitter 4 is connected to the ground. The liquid level sensor 8 is connected to the traction rope 10 just above the suspension 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 mixed phase fluid in the extraction tank clarification chamber 12 changes in density due to the difference in the ratio of the aqueous phase to the organic phase or the abnormality of the agitator 6, the buoyancy of the suspension 9 also changes, so that the traction rope 10 causes a variable tension on the deformation spring 3 and the pressure transmitter 4, and the pressure transmitter 4 transmits the real-time tension data. The data is uploaded to the computer processor 5, and 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, and automatically checks the water phase flow rate, organic phase flow rate and stirring speed in real time. If an abnormality is found, it will automatically control and adjust in real time to achieve self-checking. When the computer processor 5 finds a fault that cannot be automatically handled, it will issue an alarm to the operator through the sound and light alarm 2 and the remote information receiver 1, so that the operator can intervene to handle the abnormality as soon as possible. The mixed clarification extraction tank determines the mixed phase state through the computer machine processing the pressure transmission signal, and performs secondary data processing to determine the abnormal working condition of the mixed clarification extraction tank, make disposal suggestions and send out immediate warning signals to remind the post operators to deal with it, so as to create conditions for maintaining the separation effect of the production line and achieving smooth operation; it comprehensively covers various abnormal working conditions that may affect the separation effect of the mixed clarification extraction tank. Its use can greatly reduce the work requirements of manual inspections, and solve the problem that the existing solvent extraction process status detection technology cannot monitor the abnormal material flow and the abnormality of the broken impeller.

[0024] Furthermore, the computer processor 5 is connected to the sound and light alarm 2 and the pressure transmitter 4 via a wireless network and a wired network, and the wireless network includes WiFi and Bluetooth; the computer processor 5 is connected to the remote information receiver 1 via a wireless network.

[0025] See also Figure 2 In a second aspect, the present invention further provides a method for early warning of the state of a mixing clarification extraction tank by online monitoring of pressure transmission, comprising the following steps:

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

[0027] Specifically, the tension data is the buoyancy change of the suspension 9 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 ratio of the aqueous phase to the organic phase or the abnormality of the agitator 6, the buoyancy of the suspension 9 also changes, so that the traction rope 10 causes a variable tension on the deformation spring 3 and the pressure transmitter 4, and the pressure transmitter 4 then 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, and performs adjustment and self-checking;

[0029] Specifically, 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 verifies the water phase flow rate, organic phase flow rate and stirring speed in real time, and automatically controls and adjusts in real time if an abnormality is found, thereby achieving self-verification.

[0030] When the computer processor 5 finds a fault that cannot be handled, it warns the staff based on the remote information receiver 1 and the sound and light alarm 2 in S3.

[0031] Specifically, when the computer processor 5 finds a fault that cannot be automatically processed, an alarm is sent to the operator through the sound and light alarm 2 and the remote information receiver 1 so that the operator can intervene to process the abnormality as soon as possible.

[0032] The state of the mixed phase in the mixed clarification extraction tank is mainly reflected in the ratio of the organic phase to the aqueous phase in the mixed phase, that is, the ratio. The ratio of the two phases in the mixed phase at a specific position in the mixed clarification extraction tank is closely related to the stirring and mixing effect and the ratio of the two phases entering the mixing chamber to participate in the reaction. It can be used for early warning of abnormal operating conditions of the tank for disposal.

[0033] Through statistical data, it can be concluded that the mixed phase ratio (organic phase: aqueous phase) at any point above the water phase liquid level in the clarification chamber near the outlet of the mixing chamber is compared with the potential abnormal working conditions of the tank body as shown in Table 1:

[0034]

[0035] In the mixed clarification extraction tank, the common organic phase density is 0.8-0.9g / cm 3 , common water phase density 1.1-1.5g / cm 3, and the volume of the two phases does not change significantly after mixing. The density of the mixed phase is closely related to the ratio of the organic phase to the aqueous phase. The higher the organic phase ratio, the lower the density of the mixed phase, and vice versa. The liquid discharge suspension can monitor the liquid density at any position by adjusting the immersion position of the suspension 9, and the change trend of the ratio can be reflected by monitoring the change of the tension of the rope of the suspension 9 through the pressure transmitter 4.

[0036] Through experiments, it can be obtained that the tension change of the suspension 9 rope hanging at any point 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 mixed phase here (organic phase: water phase) as shown in Table 2.

[0037]

[0038]

[0039] The above disclosure is only a preferred embodiment of the method for online monitoring of the mixing clarification extraction tank and the tank body status early warning of the pressure transmitter of the present invention. Of course, this cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. Pressure transmitter online monitoring of mixing, clarifying and extracting tank, characterized in that: It includes a remote information receiver, an audible and visual alarm, a deformation spring, a pressure transmitter, a computer processor, an agitator, a pulley, a liquid level sensor, a suspension, a traction rope, an extraction tank mixing chamber, and an extraction tank clarifying chamber; The extraction tank mixing chamber is arranged on one side of the extraction tank clarifying chamber, the agitator is arranged on the top of the extraction tank mixing chamber, the pulleys are respectively arranged on one side of the extraction tank mixing chamber and the extraction tank clarifying chamber, the traction rope is arranged on one side of the pulley, the suspension is fixedly connected to the traction rope and is located in the extraction tank clarifying chamber, the deformation spring is fixedly connected to the traction rope and is located on the side of the traction rope away from the suspension, the pressure transmitter is fixedly connected to the deformation spring and is located on the side of the deformation spring away from the traction rope, the liquid level sensor is connected to the traction rope and is located above the suspension, and the computer processor is respectively connected to the remote information receiver, the sound and light alarm and the pressure transmitter.

2. The pressure transmitter online monitoring mixing and clarifying extraction tank according to claim 1, characterized in that: The computer processor is connected to the sound and light alarm and the pressure transmitter via a wireless network and a wired network, and the wireless network includes WiFi and Bluetooth.

3. The pressure transmitter online monitoring mixing and clarifying extraction tank according to claim 1, characterized in that: The computer processor is connected to the telematics receiver via a wireless network.

4. A method for early warning of the state of a mixing and clarifying extraction tank by online monitoring of pressure transmission, as claimed in any one of claims 1 to 3, characterized in that: The following steps are involved: Upload tension data to the computer processor in real time through the pressure transmitter; The computer processor converts the tension data into mixed-phase fluid density data, and compares it with the standard mixed-phase fluid density to perform adjustment and self-checking; When the computer processor finds a fault that cannot be handled, it warns the staff based on the remote information receiver and the sound and light alarm.

5. The method for early warning of the state of a mixing clarification extraction tank by online monitoring of pressure transmission as claimed in claim 4, characterized in that: The tension data is the change in buoyancy of the suspension in the clarification chamber of the extraction tank.

6. The method for early warning of the state of a mixing clarification extraction tank by online monitoring of pressure transmission as claimed in claim 4, characterized in that: The density of the organic phase put into the mixing chamber of the extraction tank is 0.8-0.9 g / cm 3 , water phase density 1.1-1.5g / cm 3 .

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