Automatic monoethylamine liquid preparation system

Abstract

The utility model discloses an automatic monoethylamine liquid preparation system, and relates to the technical field of monoethylamine liquid preparation. Comprising a monoethylamine liquid preparation tank, a concentration sensor is arranged in the monoethylamine liquid preparation tank, and a liquid level meter is arranged on the monoethylamine liquid preparation tank; the monoethylamine liquid preparation tank is connected with a desalted water outer pipe through a pipeline; a desalted water regulating valve and a desalted water stop valve are arranged on the pipeline; the bottom of the side wall of the monoethylamine liquid preparation tank is connected with the monoethylamine liquid preparation cooler through a pipeline, the monoethylamine liquid preparation cooler is connected with one interface of the static mixer through a pipeline, the static mixer is connected with the monoethylamine storage tank through a pipeline, and the pipeline is provided with the monoethylamine stop valve and the monoethylamine regulating valve; the bottom of the monoethylamine liquid preparation tank is connected to one interface of the static mixer through a circulating pipeline, and a temperature sensor is arranged at the joint of the circulating pipeline and the monoethylamine liquid preparation tank; the concentration sensor, the liquid level meter, the desalted water regulating valve, the desalted water stop valve, the monoethylamine stop valve, the monoethylamine regulating valve and the temperature sensor are electrically connected.

Description

TECHNICAL FIELD

[0001] The utility model relates to a one ethylamine liquid preparation technical field, concretely relates to a one ethylamine automatic liquid preparation system. BACKGROUND

[0002] One ethylamine liquid preparation refers to the process of mixing one ethylamine with other solvents or chemical reagents according to specific proportions and conditions to prepare a solution that meets specific application requirements. In the fields of chemistry, pharmacy, and bioengineering, one ethylamine liquid preparation is a key step in many experimental and production processes. The accuracy and efficiency of liquid preparation directly affect the success rate of subsequent reactions and the final quality of products.

[0003] Traditional one ethylamine liquid preparation systems usually include: raw material storage equipment for storing one ethylamine and other chemical raw materials that need to be mixed. Measuring equipment including various pumps and flow meters for accurately controlling the amount of raw materials added. Mixing equipment such as stirrers to ensure that the raw materials are fully mixed. Control system usually operated manually, adjusting the liquid preparation proportion and mixing conditions according to experience. Safety devices including leakage detection and emergency shutdown system to prevent chemical leakage and potential safety risks.

[0004] However, the traditional one ethylamine liquid preparation process has problems such as complex operation, easy to produce errors, high safety risk, and low efficiency. INVENTION CONTENTS

[0005] Therefore, the utility model embodiment provides a one ethylamine automatic liquid preparation system to solve the above technical problems.

[0006] In order to achieve the above purpose, the utility model embodiment provides the following technical scheme:

[0007] A one ethylamine automatic liquid preparation system, comprising a one ethylamine liquid preparation tank, a concentration sensor is arranged in the one ethylamine liquid preparation tank, and a liquid level meter is arranged on the one ethylamine liquid preparation tank;

[0008] The top end of the one ethylamine liquid preparation tank is connected with a desalted water outer pipe through a pipeline, and a desalted water adjusting valve and a desalted water shut-off valve are arranged on the pipeline between the desalted water outer pipe and the one ethylamine liquid preparation tank;

[0009] The bottom of the side wall of the one ethylamine liquid preparation tank is connected with a one ethylamine liquid preparation cooler through a pipeline, the one ethylamine liquid preparation cooler is connected with one interface of a static mixer through a pipeline, the static mixer is connected with a one ethylamine storage tank through a pipeline, and a one ethylamine shut-off valve and a one ethylamine adjusting valve are arranged on the pipeline between the one ethylamine storage tank and the static mixer;

[0010] The bottom of the one ethylamine liquid preparation tank is connected to one interface of the static mixer through a circulating pipeline, and a temperature sensor is arranged at the connection port of the circulating pipeline and the one ethylamine liquid preparation tank;

[0011] The control system is electrically connected with the concentration sensor, the liquid level meter, the desalted water regulating valve, the desalted water cut-off valve, the monoethylamine cut-off valve, the monoethylamine regulating valve and the temperature sensor.

[0012] Optionally, the liquid level meter comprises a field liquid level meter and / or a remote liquid level meter.

[0013] Optionally, the circulating pipeline comprises a first pipe section, one end of the first pipe section is connected to the bottom of the monoethylamine liquid preparation tank, the other end of the first pipe section is connected to a tee joint, the first pipe section is connected to a second pipe section and a third pipe section through the tee joint, the other end of the second pipe section is connected to a tee joint, the second pipe section is connected to a fourth pipe section and a fifth pipe section through the tee joint, the fourth pipe section is connected to a monoethylamine tank car for loading, the fifth pipe section and the third pipe section are connected to a tee joint, the third pipe section and the fifth pipe section are connected to a sixth pipe section through the tee joint, and the sixth pipe section is connected to the static mixer.

[0014] Optionally, a seventh pipe section is connected to the middle of the fifth pipe section, and the other end of the seventh pipe section is connected to the monoethylamine liquid preparation tank.

[0015] Optionally, a desalted water flow meter is arranged on the pipeline between the monoethylamine liquid preparation tank and the desalted water outer pipeline, a monoethylamine flow meter is arranged on the pipeline between the static mixer and the monoethylamine storage tank, and the desalted water flow meter and the monoethylamine flow meter are electrically connected with the control system.

[0016] Optionally, the top of the monoethylamine liquid preparation cooler is provided with a circulating water supply pipeline and a circulating water return pipeline.

[0017] Optionally, the top of the monoethylamine liquid preparation tank is connected to a fire-fighting water pipeline network through a pipeline.

[0018] Optionally, the top of the monoethylamine liquid preparation tank is connected to a nitrogen outer pipeline through a pipeline.

[0019] Optionally, the top of the monoethylamine liquid preparation tank is connected to a process venting pipeline and an accident venting pipeline.

[0020] Optionally, the static mixer is provided with a filler and a demister.

[0021] The utility model has at least the following beneficial effects:

[0022] The utility model discloses a desalted water outer tube and one ethylamine storage tank intercommunication one ethylamine solution tank are set up, and desalted water and one ethylamine solution are transported to one ethylamine solution tank and carry out solution preparation, and through concentration sensor, liquid level meter, desalted water regulating valve, desalted water cut -out valve, one ethylamine cut -out valve, one ethylamine regulating valve and temperature sensor electric connection, the concentration and temperature of one ethylamine solution tank are monitored, and the solution circulation pipeline in one ethylamine solution tank is transported to one ethylamine solution cooler through static mixer, carries out mixing and cooling, guarantees the temperature and concentration of solution in one ethylamine solution tank reach the index and stop circulating, then are transported to tank car and carry on loading through circulation pipeline, through system monitoring control, simplify the operation, reduce the error in solution preparation process simultaneously, reduce the security risk and improve the efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the prior art and the utility model, the following will be used in the prior art and the utility model embodiment description of the drawings briefly introduced. Obviously, the following description of the drawings is only exemplary, and for those skilled in the art, without creative effort, other drawings can be obtained according to the provided drawings.

[0024] The structure, proportion, size and the like shown in the specification are only used to cooperate with the content disclosed in the specification, for understanding and reading by those skilled in the art, and are not used to limit the limiting conditions of the utility model that can be implemented. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose that the utility model can produce, should still fall within the scope of the technical content disclosed by the utility model.

[0025] Figure 1 Structure diagram of principle (upper half) for one embodiment of the utility model;

[0026] Figure 2 Structure diagram of principle (lower half) for one embodiment of the utility model.

[0027] Explanation of reference numerals:

[0028] 1, monoethylamine solution preparation tank; 2, monoethylamine solution preparation cooler; 3, static mixer; 4, monoethylamine cut-off valve; 5, monoethylamine flow meter; 6, monoethylamine regulating valve; 7, monoethylamine storage tank; 8, desalted water outer pipe; 9, desalted water regulating valve; 10, desalted water flow meter; 11, desalted water cut-off valve; 12, on-site liquid level meter; 13, remote liquid level meter; 14, concentration sensor; 15, temperature sensor; 16, circulating pipeline; 161, first pipe section; 162, second pipe section; 163, third pipe section; 164, fourth pipe section; 165, fifth pipe section; 166, sixth pipe section; 17, seventh pipe section; 18, fire water pipe network; 19, process vent pipe; 20, accident vent pipe; 21, circulating water up-pipe; 22, circulating water back-pipe; 23, nitrogen outer pipe. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0030] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more. In the specification and claims of the present application and the above-mentioned drawings, the terms "first", "second", "third", "fourth" and the like (if any) are intended to distinguish the objects referred to. For the scheme with time sequence flow, this kind of term expression method does not have to be understood as describing a specific order or sequence, and for the scheme of device structure, this kind of term expression method does not have to distinguish the importance, position relationship, etc.

[0031] In addition, the terms "include", "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to only those steps or units explicitly listed, but can also include other steps or units inherent to these processes, methods, products or devices, or steps or units added based on further optimization schemes of the present application concept.

[0032] As shown in Figure 1 and Figure 2 , the present application discloses a kind of monoethylamine automatic solution preparation system, including monoethylamine solution preparation tank 1, concentration sensor 14 is provided in the monoethylamine solution preparation tank 1, liquid level meter is provided on monoethylamine solution preparation tank 1;

[0033] The top of the monoethylamine solution preparation tank 1 is connected with desalted water outer pipe 8 by pipeline, and desalted water regulating valve 9 and desalted water cut-off valve 11 are arranged on the pipeline between desalted water outer pipe 8 and monoethylamine solution preparation tank 1;

[0034] The bottom of the monoethylamine solution tank 1 is connected to a static mixer 3 through a circulating pipeline 16, and a temperature sensor 15 is arranged at the connection port of the circulating pipeline 16 and the monoethylamine solution tank 1;

[0035] The bottom of the monoethylamine solution tank 1 is connected to a static mixer 3 through a circulating pipeline 16, and a temperature sensor 15 is arranged at the connection port of the circulating pipeline 16 and the monoethylamine solution tank 1;

[0036] The concentration sensor 14, the liquid level meter, the desalinated water regulating valve 9, the desalinated water cut-off valve 11, the monoethylamine cut-off valve 4, the monoethylamine regulating valve 6, and the temperature sensor 15 are electrically connected.

[0037] The desalinated water flow meter 10 is arranged on the pipeline between the monoethylamine solution tank 1 and the desalinated water outer pipeline 8, and the monoethylamine flow meter 5 is arranged on the pipeline between the static mixer 3 and the monoethylamine storage tank 7, both of which are electrically connected to the control system.

[0038] The monoethylamine solution tank 1 is made of a stainless steel container or tank body, which is used to store raw materials and solvents required for monoethylamine and other solutions. The storage equipment has the characteristics of sealing performance and easy cleaning, which ensures the purity of the raw materials and the accuracy of the proportioning;

[0039] The concentration sensor 14 is arranged in the solution tank to monitor the concentration of the monoethylamine solution in the monoethylamine solution tank 1 in real time. Multiple concentration sensors 14 can be arranged at different heights along the tank body in the monoethylamine solution tank 1, which can be arranged at equal intervals or unequal intervals according to actual needs. In this way, the concentration of the monoethylamine solution at different liquid levels in the monoethylamine solution tank 1 can be monitored, and whether the solution in the monoethylamine solution tank 1 is stratified can be determined, so as to determine whether mixing is needed.

[0040] The desalinated water outer pipeline 8 is connected to a desalinated water source to transport mixed desalinated water to the monoethylamine solution tank 1. The desalinated water cut-off valve 11 is arranged on the pipeline connected to the desalinated water outer pipeline 8. When the desalinated water in the monoethylamine solution tank 1 is sufficient, the control system controls the cut-off valve to open, so that the pipeline is disconnected. The desalinated water regulating valve 9 and the desalinated water flow meter 10 are also arranged on the pipeline to monitor and control the addition rate of the desalinated water. The desalinated water regulating valve 9 is provided with a main valve and a backup valve in parallel. The main valve pipeline is used as a regular pipeline, and the backup valve pipeline is used as a standby pipeline when the main valve pipeline is damaged or needs to be repaired, so as to avoid affecting the solution process.

[0041] The monoethylamine storage tank 7 stores pure monoethylamine, which is used to supply pure monoethylamine to the monoethylamine solution preparation tank 1; the monoethylamine storage tank 7 is connected (through a pipeline) to one of the interfaces (inlets) of the static mixer 3, and the other interface (inlet) of the static mixer 3 is connected to the circulation pipeline 16; the solution in the monoethylamine solution preparation tank 1 is mixed with the pure monoethylamine in the monoethylamine storage tank 7 through the circulation pipeline 16, and then is transported to the monoethylamine solution preparation cooler 2 for cooling, and then is transported to the monoethylamine solution preparation tank 1 again; a monoethylamine shut-off valve 4 is arranged on the connecting pipeline of the monoethylamine storage tank 7, and is electrically connected to the control system; when the concentration of the solution in the monoethylamine solution preparation tank 1 reaches the standard, the monoethylamine shut-off valve 4 is disconnected to stop supplying the solution; at the same time, a monoethylamine flow meter 5 and a monoethylamine regulating valve 6 are arranged on the pipeline to monitor and control the supply rate of the monoethylamine; in addition, the monoethylamine regulating valve 6 is arranged as a main valve and a backup valve in parallel, wherein the pipeline of the main valve is used as a normal pipeline, and the pipeline of the backup valve is used as a standby pipeline, so that the solution preparation process is not affected when the pipeline of the main valve is damaged and needs to be repaired;

[0042] The static mixer 3 and the defoamer are arranged in the static mixer 3 to ensure uniform mixing.

[0043] The control system is the core of the system, adopts sensor control technology, and realizes accurate adjustment of parameters such as solution preparation ratio, flow control and temperature control; the control system integrates an industrial computer and a PLC, and is operated and monitored through a human-computer interaction interface.

[0044] The liquid level meter includes a field liquid level meter 12 and / or a remote liquid level meter 13.

[0045] The liquid level meter can be arranged as the field liquid level meter 12 or the remote liquid level meter 13, which is convenient for field observation and also can transmit data to the control system for monitoring.

[0046] The circulation pipeline 16 includes a first pipe section 161, one end of the first pipe section 161 is connected to the bottom of the monoethylamine solution preparation tank 1, the other end of the first pipe section 161 is connected to a three-way joint, the first pipe section 161 is connected to a second pipe section 162 and a third pipe section 163 through the three-way joint, the other end of the second pipe section 162 is connected to a three-way joint, the second pipe section 162 is connected to a fourth pipe section 164 and a fifth pipe section 165 through the three-way joint, the fourth pipe section 164 is connected to a monoethylamine tank car for loading, the fifth pipe section 165 and the third pipe section 163 are connected to a three-way joint, the third pipe section 163 and the fifth pipe section 165 are connected to a sixth pipe section 166 through the three-way joint, and the sixth pipe section 166 is connected to the static mixer 3; a first monoethylamine solution preparation circulation pump is arranged on the second pipe section 162, and a second monoethylamine solution preparation circulation pump is arranged on the third pipe section 163.

[0047] The fifth pipe section 165 is connected with a seventh pipe section 17 at the middle, and the other end of the seventh pipe section 17 is connected with an ethylamine solution preparation tank 1.

[0048] The circulation pipeline 16 is divided into two parts, one part is the circulation pipeline 16, and the other part is a loading pipeline;

[0049] In the circulation process, the concentration and temperature of the solution in the ethylamine solution preparation tank 1 do not reach the preset index;

[0050] The solution in the ethylamine solution preparation tank 1 enters the third pipe section 163 (the right pipe section in the figure) from the first pipe section 161 at the bottom, then enters the sixth pipe section 166 from the third pipe section 163, and finally enters the static mixer 3 for mixing and enters the ethylamine solution preparation cooler 2 for cooling. After the cooling is completed, the solution enters the ethylamine solution preparation tank 1 again;

[0051] In the loading process, the concentration of the solution in the ethylamine solution preparation tank 1 reaches the preset index;

[0052] If the temperature reaches the standard, the solution in the ethylamine solution preparation tank 1 enters the second pipe section 162 (the left pipe section in the figure) from the first pipe section 161 at the bottom, then enters the fourth pipe section 164 from the second pipe section 162, and the fourth pipe section 164 is connected with the tank car, and the loading is completed;

[0053] If the temperature does not reach the standard, the solution in the ethylamine solution preparation tank 1 enters the second pipe section 162 (the left pipe section in the figure) from the first pipe section 161 at the bottom, then enters the fifth pipe section 165 from the second pipe section 162, and then enters the ethylamine solution preparation cooler 2 from the sixth pipe section 166 and the static mixer 3 (at this time, the ethylamine cut-off valve 4 cuts off the pipeline of the ethylamine storage tank 7) for cooling, and then enters the ethylamine solution preparation tank 1 again. After the temperature reaches the standard, the solution is transported according to the pipeline of the temperature reaching the standard;

[0054] If the temperature reaches the standard (to prevent the pipeline from being blocked when the pump is stopped), the solution in the ethylamine solution preparation tank 1 also enters the second pipe section 162 (the left pipe section in the figure) from the first pipe section 161 at the bottom, then enters the fifth pipe section 165 from the second pipe section 162, and then flows back to the ethylamine solution preparation tank 1 from the seventh pipe section 17 branched from the fifth pipe section 165;

[0055] The first ethylamine circulating pump and the second ethylamine circulating pump adopt peristaltic pumps suitable for the characteristics of ethylamine, so as to ensure the stability and accuracy of the transportation process.

[0056] The top of the ethylamine solution preparation cooler 2 is provided with a circulating water supply pipeline 21 and a circulating water return pipeline 22.

[0057] The circulating water inlet pipeline and the circulating water return pipeline 22 serve as the cooling water pipeline of the monoethylamine solution preparation cooler 2, and cool the monoethylamine solution in the monoethylamine solution preparation cooler 2.

[0058] The top of the monoethylamine solution preparation tank 1 is connected to the fire water pipeline network 18 through a pipeline.

[0059] The monoethylamine solution preparation tank 1 is connected to the fire water pipeline network 18, providing fire protection measures in emergency situations.

[0060] The top of the monoethylamine solution preparation tank 1 is connected to the nitrogen external pipeline 23 through a pipeline.

[0061] Nitrogen is introduced into the monoethylamine solution preparation tank 1 through the nitrogen external pipeline 23, and the main purpose of introducing nitrogen into the monoethylamine solution preparation tank 1 is to create an oxygen-free or low-oxygen environment to prevent oxidation of monoethylamine during solution preparation.

[0062] The top of the monoethylamine solution preparation tank 1 is connected to the process vent pipeline 19 and the emergency vent pipeline 20.

[0063] The emergency vent pipeline 20 is used to deal with emergency situations, such as accidents in the solution preparation tank, such as overpressure, leakage, or other situations that may cause safety accidents. The emergency vent system will start to discharge the substances in the tank to a safe place to prevent accidents from happening or expanding.

[0064] The process vent pipeline 19 is used for venting during normal operation, and is used to control and regulate the pressure and liquid level in the tank. For example, during solution preparation, when the volume of the solution decreases, gas needs to be supplemented from outside the tank to balance the pressure in the tank and prevent negative pressure from affecting filtration operations. The process venting ensures that the pressure in the tank and the atmospheric pressure outside are balanced, and also allows gas to be discharged or supplemented as necessary to maintain the stability of the process.

[0065] The user inputs the required monoethylamine solution formula and concentration through the computer, and the system automatically calculates the required amount of various raw materials and solvents. The control system automatically controls the start and stop and flow of the raw material pump and the solvent pump according to the calculation results, realizing accurate solution preparation. During preparation, the system monitors the concentration and volume of the solution in real time, and ensures uniform mixing through the static mixer 3. After preparation is completed, the system automatically cools the solution to the specified temperature, and then the first monoethylamine circulating pump stops and the valve automatically closes. The qualified product is transported to the storage equipment or directly enters the next process.

[0066] Liquid leakage alarm devices, emergency stop devices, and electrical protection devices can also be provided on the monoethylamine solution preparation tank 1 to ensure that the system can respond quickly in abnormal situations and protect personnel and equipment safety.

[0067] The above several specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments.

[0068] The technical features of the above embodiments can be combined in any manner (as long as the combination of the technical features does not contradict), and in order to make the description concise, all possible combinations of the technical features in the above embodiments are not described; these embodiments not explicitly written should also be considered as the scope of the description.

[0069] The utility model has been described in the above in detail and concretely through general statement and specific embodiment. It should be pointed out that, on the premise of not departing from the utility model concept, obviously, a number of deformation and improvement can be made to these specific embodiments, and these all belong to the protection scope of the application. Therefore, the protection scope of the application patent should be subject to the appended claims.

Claims

1. An automated monoethylamine dispensing system, characterized in that: Ethylamine solution preparation tank is provided with a concentration sensor, and is provided with a liquid level meter; The top end of the ethylamine solution preparation tank is connected with a desalted water outer pipe through a pipeline, and a desalted water adjusting valve and a desalted water cut-off valve are arranged on the pipeline between the desalted water outer pipe and the ethylamine solution preparation tank; The bottom of the side wall of the ethylamine solution preparation tank is connected with an ethylamine solution preparation cooler through a pipeline, the ethylamine solution preparation cooler is connected with one interface of a static mixer through a pipeline, the static mixer is connected with an ethylamine storage tank through a pipeline, and an ethylamine cut-off valve and an ethylamine adjusting valve are arranged on the pipeline between the static mixer and the ethylamine storage tank; The bottom of the ethylamine solution preparation tank is connected to one interface of the static mixer through a circulating pipeline, and a temperature sensor is arranged on the connecting port of the circulating pipeline and the ethylamine solution preparation tank. The control system is electrically connected with the concentration sensor, the liquid level meter, the desalted water adjusting valve, the desalted water cut-off valve, the ethylamine cut-off valve, the ethylamine adjusting valve and the temperature sensor.

2. The monoethylamine auto-liquor system according to claim 1, characterized in that: The liquid level meter comprises a field liquid level meter and / or a remote liquid level meter.

3. The monoethylamine auto-liquor system according to claim 1, characterized in that: The circulating pipeline comprises a first pipe section, one end of the first pipe section is connected to the bottom of the ethylamine solution preparation tank, the other end of the first pipe section is connected to a three-way joint, the first pipe section is connected to a second pipe section and a third pipe section through the three-way joint, the other end of the second pipe section is connected to a three-way joint, the second pipe section is connected to a fourth pipe section and a fifth pipe section through the three-way joint, the fourth pipe section is connected to an ethylamine tank car for loading, the fifth pipe section and the third pipe section are connected to a three-way joint, the third pipe section and the fifth pipe section are connected to a sixth pipe section through the three-way joint, and the sixth pipe section is connected to the static mixer.

4. The monoethylamine auto-liquor system according to claim 3, characterized in that: A seventh pipe section is connected to the middle of the fifth pipe section, and the other end of the seventh pipe section is connected to the ethylamine solution preparation tank.

5. The monoethylamine auto-liquor system according to claim 1, characterized in that: A desalted water flow meter is further arranged on the pipeline between the ethylamine solution preparation tank and the desalted water outer pipe, an ethylamine flow meter is further arranged on the pipeline between the static mixer and the ethylamine storage tank, and the desalted water flow meter and the ethylamine flow meter are electrically connected with the control system.

6. The monoethylamine auto-liquor system according to claim 1, characterized in that: A circulating water inlet pipeline and a circulating water return pipeline are arranged on the top of the ethylamine solution preparation cooler.

7. The monoethylamine auto-liquor system according to claim 1, characterized in that: A fire-fighting water pipeline is connected to the top of the ethylamine solution preparation tank through a pipeline.

8. The monoethylamine auto-liquor system according to claim 1, characterized in that: A nitrogen gas outer pipe is connected to the top of the ethylamine solution preparation tank through a pipeline.

9. The monoethylamine auto-liquor system according to claim 1, characterized in that: Process venting pipeline and accident venting pipeline are connected to the top of the ethylamine solution preparation tank.

10. The monoethylamine auto-liquor system according to claim 1, characterized in that: Filler and a defoamer are arranged in the static mixer.

Images