Batching system and reaction and batching integrated system

Abstract

The utility model discloses a batching system and a reaction and batching integrated system, and solves the technical problem of low batching accuracy in the prior art. The batching system comprises a batching header pipe, a batching tank, a first pipeline, a first metering device, a second metering device and a control system; the first metering device comprises a batching metering pump, a flow meter and a regulating valve; the second metering device comprises a metering tank and a weighing device; the control system is connected with the flow meter, the regulating valve and the weighing device; wherein the ingredient metering pump is used for controlling the opening degree based on a flow signal of the flow meter; the regulating valve is used for controlling the opening degree based on a flow signal of the flowmeter; under the condition that the weight signal of the weighing device and the flow signal of the flow meter are converted and compared correctly, the metering tank supplies materials to the reactor. The requirement of intermittent production is met, the stability of batch production is ensured, the batching time is saved, and the batch production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of material distribution, and particularly relates to a batching system and a reaction and batching integrated system. BACKGROUND

[0002] In an engineering project, a batching system is needed for adding batching or various additives in a production process.

[0003] At present, most batching systems are composed of one batching tank and one batching delivery pump, or multiple batching tanks and batching pumps, and the addition amount of batching in product production is calculated by monitoring the liquid level of the batching tank. Errors are caused by the failure of the device itself or human error through a single metering device, thereby affecting the accuracy of batching. SUMMARY

[0004] To solve the technical problem of low batching accuracy at present, the present application provides a batching system and a reaction and batching integrated system.

[0005] In the first aspect of the present application, a batching system is provided, comprising:

[0006] a batching main pipe;

[0007] a batching tank provided with a first feeding port and a first discharging port, the first feeding port being in communication with the batching main pipe;

[0008] a first pipeline in communication with the first discharging port;

[0009] a first metering device comprising a batching metering pump, a flow meter and an adjusting valve arranged in the first pipeline in sequence;

[0010] a second metering device comprising a metering tank and a weighing device arranged in the metering tank, the metering tank being provided with a second feeding port and a second discharging port, the second feeding port being in communication with the first pipeline, and the second discharging port being used for being in communication with a reactor;

[0011] a control system connected with the flow meter, the adjusting valve and the weighing device;

[0012] The batching metering pump is used for controlling the opening degree based on the flow signal of the flow meter; the adjusting valve is used for controlling the opening degree based on the flow signal of the flow meter; and the metering tank supplies the reactor with materials in the case that the weight signal of the weighing device and the flow signal of the flow meter are accurately converted and compared.

[0013] In some embodiments, the batching tank is provided with a first feeding valve, a first discharging valve and a first liquid level meter connected with the control system;

[0014] The control system is configured to control opening and closing of the first feed valve and the first discharge valve based on the liquid level of the first liquid level meter.

[0015] In some embodiments, the metering tank is provided with a second feed valve, a second discharge valve and a second liquid level meter.

[0016] The second liquid level meter is connected with the control system.

[0017] In some embodiments, the flow meter is a gravimetric flow meter, a volumetric flow meter or a mass flow meter.

[0018] In some embodiments, the batching tank and / or the metering tank is provided with a jacket.

[0019] The jacket is provided with a medium inlet for medium inflow and a medium outlet for medium outflow.

[0020] In some embodiments, the batching tank is provided with a first temperature meter connected with the control system.

[0021] And / or, the metering tank is provided with a second temperature meter connected with the control system.

[0022] In some embodiments, the batching tank is provided with a stirrer for stirring the material.

[0023] In a second aspect of the present application, a reaction and batching integrated system is provided, comprising:

[0024] The batching system as described above;

[0025] A second pipeline in communication with the second discharge port of the metering tank;

[0026] A reactor provided with a third feed port, the third feed port being in communication with the second pipeline;

[0027] A switch valve provided in the second pipeline and connected with the control system.

[0028] In some embodiments, the switch valve is located downstream of the second discharge valve.

[0029] The switch valve is a pneumatic valve or an electric valve.

[0030] In some embodiments, along the height direction of the reactor, the metering tank is located above the reactor.

[0031] According to one or more embodiments of the present application, a dosing system and a reaction and dosing integrated system are provided. The dosing system comprises a dosing main pipe, a dosing tank, a first pipe, a first metering device, a second metering device and a control system. The dosing tank is provided with a first feeding port and a first discharging port. The first feeding port is in communication with the dosing main pipe. The first pipe is in communication with the first discharging port. The first metering device comprises a dosing metering pump, a flow meter and a regulating valve arranged in the first pipe in sequence. The second metering device comprises a metering tank and a weighing device arranged in the metering tank. The metering tank is provided with a second feeding port and a second discharging port. The second feeding port is in communication with the first pipe. The second discharging port is used to communicate with a reactor. The control system is connected with the flow meter, the regulating valve and the weighing device. The dosing metering pump is used to control the opening degree based on the flow signal of the flow meter. The regulating valve is used to control the opening degree based on the flow signal of the flow meter. When the weight signal of the weighing device and the flow signal of the flow meter are accurately compared and matched, the metering tank supplies material to the reactor.

[0032] According to the present application, the first metering device and the second metering device are arranged behind the dosing tank. The material in the metering tank is delivered to the reactor once by comparing and matching the metering data twice. The dosing system of the present application realizes one-time rapid feeding. Compared with the continuous feeding of the prior art, the dosing system of the present application is intermittent feeding. The dosing system of the present application is convenient for metering and can realize one-time feeding. The dosing system of the present application meets the needs of intermittent production and ensures the stability of batch production. Therefore, the dosing time is saved and the efficiency of batch production is improved. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 The structure of the dosing system in one or more embodiments of the present application is shown.

[0034] Figure 2 The structure of the reaction and dosing integrated system in one or more embodiments of the present application is shown.

[0035] Legend: 100-dosing system, 110-dosing main pipe, 120-dosing tank, 121-first feeding valve, 122-first discharging valve, 130-first pipe, 140-first metering device, 141-dosing metering pump, 142-regulating valve, 143-flow meter, 150-second metering device, 151-metering tank, 152-weighing device, 160-jacket, 161-medium inlet, 162-medium outlet, 200-reaction and dosing integrated system, 210-second pipe, 220-reactor, 230-on-off valve. DETAILED DESCRIPTION

[0036] In order to make the skilled in the art to which the present application belongs more clearly understand the present application, the following will be combined with the drawings in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0037] Please refer to Figure 1 and Figure 2 The first aspect of the present application provides a dosing system 100, which comprises a dosing main pipe 110, a dosing tank 120, a first pipeline 130, a first metering device 140, a second metering device 150 and a control system. The dosing tank 120 is provided with a first feeding port and a first discharging port, and the first feeding port is in communication with the dosing main pipe 110. The first pipeline 130 is in communication with the first discharging port. The first metering device 140 comprises a dosing metering pump 141, a flow meter 143 and a regulating valve 142 which are sequentially arranged in the first pipeline 130. The second metering device 150 comprises a metering tank 151 and a weighing device 152 arranged in the metering tank 151. The metering tank 151 is provided with a second feeding port and a second discharging port, and the second feeding port is in communication with the first pipeline 130. The second discharging port is used for being in communication with a reactor 220. The control system is connected with the flow meter 143, the regulating valve 142 and the weighing device 152. The dosing metering pump 141 is used for controlling the opening degree based on the flow signal of the flow meter 143. The regulating valve 142 is used for controlling the opening degree based on the flow signal of the flow meter 143. When the weight signal of the weighing device 152 and the flow signal of the flow meter 143 are accurately converted and compared, the metering tank 151 supplies material to the reactor 220.

[0038] The dosing main pipe 110 is used for connecting various raw material containers and conveying materials. The materials are conveyed to the dosing tank 120 through the dosing main pipe 110 for dosing, that is, the raw materials and additives can be input into the dosing tank 120 through the dosing main pipe 110.

[0039] The first metering device 140 comprises a dosing metering pump 141, a flow meter 143 and a regulating valve 142, the flow meter 143 is located upstream of the regulating valve 142, the flow meter 143 can transmit a corresponding fluid signal to a control system based on the current fluid flow in the first pipeline 130, for example, mass flow or volume flow, the control system controls the opening of the regulating valve 142 and the dosing metering pump 141 based on the fluid signal, so as to adjust the flow of the fluid in the first pipeline 130. The opening range of the dosing metering pump 141 is 0-100%, for example, the opening can be 0%, 20%, 40%, 50%, 70% or 100%; the opening range of the regulating valve 142 is 0-100%, for example, the opening can be 0%, 20%, 40%, 50%, 70% or 100%.

[0040] In some embodiments, in the process of obtaining the weighing signal of the weighing device of the second metering device, the metering tank is not communicated with the reactor, that is, all the materials metered by the flow meter 143 flow into the metering tank for storage, after the regulating valve and the dosing metering pump are closed, the weighing signal of the weighing device is obtained, and the flow signal of the flow meter 143 is compared with the weighing signal of the weighing device 152. The weighing device can be a weighing device commonly used in the prior art, for example, a resistance strain type weighing sensor, as long as it can realize the metering of the weight change of the material in the metering tank.

[0041] The second metering device 150 comprises a metering tank 151 and a weighing device 152 arranged in the metering tank 151, the weighing device 152 can obtain the weight of the corresponding material flowing into the metering tank 151, and then convert the weight into mass or volume matched with the flow of the flow meter 143, that is, the weight signal of the weighing device 152 is converted into the same metering unit as the flow signal of the flow meter 143, and then compared, if the comparison is correct, the material in the metering tank 151 can be delivered to the reactor 220. It can be understood that the correct comparison means that there is no significant difference between the first metering result and the second metering result within a certain error range, and they can be considered consistent. For example, if the error between the first metering result and the second metering result is within the allowable range, the error can be ±0.5%, ±0.3% or ±0.2%, it can be considered that the weight signal of the weighing device 152 and the flow signal of the flow meter 143 are correctly converted and compared. That is, the first metering is performed by the first metering device 140, the second metering is performed by the second metering device 150, the data of the two meterings are converted and compared, if the data of the two meterings are correctly compared, it can be ensured that the material in the metering tank 151 is accurately metered, the material in the metering tank 151 is accurately metered through the two meterings, and then the accurately metered material is delivered from the metering tank 151 to the reactor 220, which can realize one-time rapid feeding.

[0042] The prior art is usually continuous feeding, and due to the existence of certain errors in the opening and closing of the valve and other factors, and the prior art is usually a single metering mode, so that the weight of the continuously fed material supply fluctuates within a certain range, thereby affecting the accuracy. The present application sets the first metering device 140 and the second metering device 150 after the batching tank 120, and calculates and compares the data twice, and if the comparison is correct, the material in the metering tank 151 can be delivered to the reactor 220 at one time, which can realize one-time rapid feeding. Compared with the continuous feeding of the prior art, the batching system 100 of the present application is intermittent feeding, convenient metering, saves equipment, can be fed at one time, meets the needs of intermittent production, ensures the stability of batch production, thereby saving batching time and improving batch production efficiency.

[0043] In some embodiments, the batching tank 120 is provided with a first feeding valve 121, a first discharging valve 122 and a first liquid level meter connected with the control system; the control system is used to control the opening and closing of the first feeding valve 121 and the first discharging valve 122 based on the liquid level of the first liquid level meter. In some embodiments, the first liquid level meter can be a magnetic float type liquid level meter, an internal float type liquid level meter, a magnetic flap liquid level meter, etc., and the present application embodiment does not limit this. The first liquid level meter can be used to monitor the liquid level of the batching tank 120, and the first liquid level meter can be provided with one or more. In the case where the first liquid level meter is provided with multiple, it is used to monitor different liquid levels, for example, a first liquid level meter is arranged at the low position of the batching tank 120, and a first liquid level meter is arranged at the high position of the batching tank 120. The low liquid level is prewarned at the low position, and the first feeding valve 121 is opened for material delivery by the control system. The high liquid level is prewarned at the high position, and the first feeding valve 121 is closed to stop material delivery by the control system. The first discharging valve 122 can be delivered to the subsequent pipeline according to the actual situation.

[0044] In some embodiments, the metering tank 151 is provided with a second feed valve, a second discharge valve and a second liquid level meter; the second liquid level meter is connected with the control system. In some embodiments, the second liquid level meter can be a magnetic float type liquid level meter, an internal float type liquid level meter, a magnetic flap type liquid level meter, etc., and the present application does not limit this. The second liquid level meter can be used to monitor the liquid level of the metering tank 151, i.e., the liquid level change of the metering tank 151 can be monitored in time during the input or output of the material in the metering tank 151. The second liquid level meter can be provided with one or more, and in the case of multiple second liquid level meters, different liquid levels are monitored. For example, one second liquid level meter is provided at the low position of the metering tank 151, and one second liquid level meter is provided at the high position of the metering tank 151, i.e., during the input of the material into the metering tank 151, the second liquid level meter provided at the high position can serve as a high-level warning purpose, and the control system can control the closing of the regulating valve and / or the batching metering pump in time; during the output of the material from the metering tank 151 to the reactor 220, the second liquid level meter provided at the low position can display whether the material is close to being vented or has been vented, i.e., whether the material in the metering tank 151 is outputted completely.

[0045] In some embodiments, the second feed valve and the second discharge valve can be manual valves, and the second feed valve and the second discharge valve can be manually closed according to the actual situation during the operation of the batching system. In other embodiments, the second feed valve and the second discharge valve can also be pneumatic valves or electric valves connected with the control system, and the opening and closing of the second feed valve and the second discharge valve can be controlled by the control system.

[0046] In some embodiments, the flow meter 143 is a weight flow meter 143, a volume flow meter 143 or a mass flow meter 143; the flow meter 143 can obtain a corresponding flow signal based on the current fluid signal in the pipeline, e.g., when the flow meter 143 is a weight flow meter 143, a corresponding weight flow signal can be obtained, and then the weight flow signal can be directly compared with the weight signal of the weighing device 152 of the metering tank 151; when the flow meter 143 is a volume flow meter 143, a corresponding volume flow signal can be obtained, and then the volume flow signal is converted into weight for indirect comparison with the weight signal of the weighing device 152 of the metering tank 151; when the flow meter 143 is a mass flow meter 143, a corresponding mass flow signal can be obtained, and then the mass flow signal is converted into weight for indirect comparison with the weight signal of the weighing device 152 of the metering tank 151. Thus, the secondary metering data is converted and compared to ensure the accuracy of the later material conveying.

[0047] In some embodiments, if the batching medium is easy to dissolve, the batching tank 120 and the metering tank 151 can not be provided with a jacket 160.

[0048] In some embodiments, the ingredient tank 120 and / or the metering tank 151 is provided with a jacket 160. The jacket 160 can be provided on the outside of the ingredient tank 120 and / or the metering tank 151. In some embodiments, the medium in the jacket 160 can be cold water or a heat-conducting medium. If the ingredient medium needs to be maintained at a low temperature, the medium in the jacket 160 can be cold water to maintain the low temperature. If the ingredient medium needs to be maintained at a high temperature, a heat-conducting medium such as hot water or heat-conducting oil can be introduced to maintain the high temperature, so that the ingredient is easy to store or maintain a better solubility. In some embodiments, the jacket 160 includes a medium inlet 161 for the medium to flow in and a medium outlet 162 for the medium to flow out, i.e., the medium can flow in through the medium inlet 161 and flow out through the medium outlet 162.

[0049] In some embodiments, the first temperature meter and the second temperature meter can be temperature transmitters, infrared thermometers, thermocouples, etc., and the embodiments of the present application do not limit the same. The first temperature meter can be used to monitor the temperature of the ingredient tank 120, and the second temperature meter can be used to monitor the temperature of the metering tank 151. For example, if the temperature of the ingredient tank 120 obtained by the first temperature meter is lower than the temperature required to be maintained by the ingredient, the heat-conducting medium can be controlled to flow in through the medium inlet 161 of the jacket 160 and flow out through the medium outlet 162 of the jacket 160 by the control system, so as to maintain the temperature required to be maintained by the ingredient tank 120.

[0050] In some embodiments, the ingredient tank 120 is provided with a stirrer for stirring the material. The stirrer can stir and mix the material in the tank body to avoid the material from being deposited or stratified after being placed for a long time, and can also make the temperatures of the materials in different areas of the tank body be substantially the same. The stirrer of the present application can be an electric stirrer, a paddle stirrer or a turbine stirrer, and the embodiments of the present application do not limit the same.

[0051] In some embodiments, the ingredient metering pump 141 can be a metering pump with a frequency conversion function, such as a diaphragm metering pump or a plunger metering pump. These metering pumps can facilitate more accurate metering of the material.

[0052] In the second aspect of the present application, a reaction and batching integrated system 200 is provided, comprising the batching system 100 described above, a second pipeline 210, a reactor 220 and a switch valve 230; the batching system 100 has the structure as described above, and all the technical solutions of all the embodiments described above are adopted, so that all the beneficial effects brought by the technical solutions of all the embodiments described above are achieved, which will not be repeated here. The second pipeline 210 is in communication with the second discharge port of the metering tank 151; the reactor 220 is provided with a third feeding port, and the third feeding port is in communication with the second pipeline 210; the switch valve 230 is arranged in the second pipeline 210 and connected with the control system. After the material in the batching system 100 is weighed accurately, the switch valve 230 can be opened, and the material in the metering tank 151 can be sequentially discharged through the first discharge port, the second pipeline 210 and the third feeding port into the reactor 220.

[0053] In some embodiments, the switch valve 230 is located downstream of the second discharge valve; it should be noted that downstream in the present application refers to the description based on the direction of fluid flow, for example, the material flows through the batching tank 120 first, and then through the batching metering pump 141, so it can be understood that the batching metering pump 141 is arranged downstream of the batching tank 120. For the switch valve 230 located downstream of the second discharge valve, it can be understood that the material first passes through the second discharge valve and then passes through the switch valve 230, and other downstream in the present application can be understood and explained based on this, which will not be repeated here. In some embodiments, the switch valve 230 is a pneumatic valve or an electric valve. The switch valve 230 is connected with the control system, which facilitates the operator to remotely open the switch valve 230, so that the additive in the metering tank 151 can be quickly fed into the reactor 220, thereby saving batching time.

[0054] In some embodiments, along the height direction of the reactor 220, the metering tank 151 is located above the reactor 220. During the feeding process of the reactor 220, the switch valve 230 is opened, and the material in the metering tank 151 can be directly and quickly fed into the reactor 220, thereby saving batching time. In some embodiments, the second pipeline adopts a bag-free type, that is, in the pipeline design, the "bag-shaped" structure is avoided, that is, the shape similar to a pocket is avoided in the pipeline, which may cause liquid or gas to accumulate, thereby affecting the normal operation of the pipeline. That is, the pipeline is arranged in a straight line or a smooth curve as much as possible, avoiding sharp bending and turning, so as to reduce the possibility of fluid resistance and accumulation.

[0055] In the production process, according to the needs of the product formula, the raw materials and additives are first added to the batching tank through the batching main pipe, stirred uniformly, and then delivered to the metering tank through the batching metering pump. When the flow meter 143 on the outlet pipe of the batching metering pump reaches the set cumulative value, the control system such as DCS interlock automatically closes the regulating valve and automatically stops the batching metering pump. The operator checks the total weight of the material in the metering tank, confirms that there is no error, and remotely opens the switch valve to feed the reactor. The production can be quickly carried out.

[0056] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature therebetween. Moreover, the first feature "on", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0057] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0058] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be broadly understood, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium; can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0059] In addition, the descriptions in the present application such as "first", "second", etc. are only for the purpose of description and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0060] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, the scope of which is defined by the claims and their equivalents.

Claims

1. A dosing system, characterized in that, include: Ingredient control manager; The mixing tank is provided with a first inlet and a first outlet, and the first inlet is connected to the mixing main pipe; The first pipeline is connected to the first discharge port; The first metering device includes a batching metering pump, a flow meter, and a regulating valve sequentially arranged in the first pipeline; The second metering device includes a metering tank and a weighing device disposed in the metering tank. The metering tank is provided with a second inlet and a second outlet. The second inlet is connected to the first pipeline, and the second outlet is used to connect to the reactor. The control system is connected to the flow meter, the regulating valve, and the weighing device. The metering pump is used to control its opening degree based on the flow signal from the flow meter; the regulating valve is used to control its opening degree based on the flow signal from the flow meter; and if the weight signal from the weighing device and the flow signal from the flow meter are correctly converted and compared, the metering tank supplies materials to the reactor.

2. A dosing system according to claim 1, characterized in that The mixing tank is equipped with a first inlet valve, a first outlet valve, and a first level gauge, all of which are connected to the control system. The control system is used to control the opening and closing of the first feed valve and the first discharge valve based on the liquid level of the first liquid level gauge.

3. The dosing system of claim 1, wherein, The metering tank is equipped with a second inlet valve, a second outlet valve, and a second level gauge; The second level gauge is connected to the control system.

4. A dosing system according to any one of claims 1-3, characterized in that The flow meter is a gravimetric flow meter, a volumetric flow meter, or a mass flow meter.

5. A dosing system according to any one of claims 1-3, characterized in that, The ingredient tank and / or the metering tank are provided with jackets; The jacket is provided with a medium inlet for medium to flow in and a medium outlet for medium to flow out.

6. A dosing system according to claim 5, characterized in that The mixing tank is equipped with a first thermometer connected to the control system; And / or, the metering tank is equipped with a second thermometer connected to the control system.

7. A dosing system according to any one of claims 1-3, characterized in that The mixing tank is equipped with a stirrer for mixing materials.

8. A reaction and ingredient integration system characterized by, include: The dispensing system according to any one of claims 1-7; The second pipeline is connected to the second discharge port of the metering tank; The reactor is provided with a third feed inlet, which is connected to the second pipeline; A switching valve is located in the second pipeline and is connected to the control system.

9. The reaction and ingredient integrated system of claim 8, wherein, The switching valve is located downstream of the second discharge valve; The switching valve is a pneumatic valve or an electric valve.

10. The reaction and ingredient integration system of claim 8, wherein, The metering tank is located above the reactor along the height direction of the reactor.

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