CN216630696U - High-efficient many concentration solution preparation device - Google Patents
High-efficient many concentration solution preparation device Download PDFInfo
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- CN216630696U CN216630696U CN202122781768.5U CN202122781768U CN216630696U CN 216630696 U CN216630696 U CN 216630696U CN 202122781768 U CN202122781768 U CN 202122781768U CN 216630696 U CN216630696 U CN 216630696U
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Abstract
The utility model discloses a high-efficiency multi-concentration solution preparation device which comprises a solvent vaporization chamber, a solution preparation tank and a solution storage tank, wherein the solvent vaporization chamber, the solution preparation tank and the solution storage tank are sequentially connected, the solvent vaporization chamber is connected with a solvent inlet pipeline, a refrigerant pipeline sequentially penetrates through the solution preparation tank and the solvent vaporization chamber, the solvent vaporization chamber and the solution preparation tank are spirally arranged and used for absorbing heat generated in the solution preparation process and using the heat for vaporizing a solvent, an industrial water sprayer is arranged at the upper end inside the solution preparation tank, a gas inlet distributor is arranged at the lower end inside the solution preparation tank, the industrial water sprayer is connected with an industrial water inlet pipeline, a flow control valve is arranged on the industrial water inlet pipeline, and the flow control valve is interlocked with the flow control valve on the solvent inlet pipeline to control the use amount of industrial water and realize the preparation of solutions with different concentrations. The solution prepared by the method has good uniformity, the preparation process is high in safety and environment-friendly, and the device can fully recycle energy.
Description
Technical Field
The utility model belongs to the technical field of solution preparation, and particularly relates to an efficient multi-concentration solution preparation device.
Background
The production fields of fine chemical engineering, denitration of power plants and the like often relate to the use of solutions of ammonia water, hydrochloric acid, hydrofluoric acid and the like, and the solutions of ammonia water, hydrochloric acid, hydrofluoric acid and the like with different concentrations are often needed according to the requirements of the production process. At present, high-concentration ammonia water, hydrochloric acid, hydrofluoric acid or liquid ammonia, liquid chlorine, anhydrous hydrogen fluoride and the like are generally adopted as raw materials for preparation, but a solvent can generate a large amount of heat in the process of dissolving in water, if the solvent is not removed in time, the temperature of a solution preparation system can be increased, ammonia gas, chlorine gas, hydrogen fluoride and the like in the solution can be volatilized, the preparation difficulty of the solution is increased, the concentration of the prepared solution is uneven, the fluctuation is large, on the other hand, the volatilization of the gas can cause the great loss of the solvent, the resource waste and the environmental pollution are caused, and the preparation system also has great potential safety hazard.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, an object of the present invention is to provide an efficient multi-concentration solution preparing apparatus.
In order to achieve the purpose, the following technical scheme is provided:
the utility model provides a device is prepared to high-efficient many concentrations solution, includes solvent vaporizer, solution preparation groove and solution storage tank, solvent vaporizer, solution preparation groove connect gradually with the solution storage tank, solvent vaporizer and solvent inlet pipe connection, the refrigerant pipeline passes solution preparation groove and solvent vaporizer in proper order, and be the screw-tupe setting in solvent vaporizer and solution preparation groove, be used for absorbing the produced heat of preparation solution in-process and be used for the vaporized solvent with the heat, the inside upper end in solution preparation groove is equipped with the industrial water shower, the lower extreme is equipped with gas inlet distributor, industrial water shower and industrial water inlet pipe connection, be equipped with flow control valve on the industrial water inlet pipe, flow control valve and the flow control valve interlock on the solvent inlet pipe, thereby control the quantity of industrial water, in order to realize the preparation of the solution of different concentrations.
Furthermore, a tail gas collecting pipeline is arranged on the solvent inlet pipeline, the solvent vaporization chamber and the top of the solution preparation tank are respectively connected with a safe discharge pipeline, and the safe discharge pipeline and the tail gas collecting pipeline are connected and converged into a pipeline and then connected with the tail gas collecting tank.
Further, the side in solution preparation groove is equipped with solution outlet pipe way, solution preparation groove passes through solution outlet pipe way and is connected with the solution storage tank, the solution storage tank is connected with the solution delivery pump, be equipped with solution concentration on-line measuring device on the solution outlet pipe way, concentration detection confirms whether the solution that flows out directly adopts or continues to participate in the circulation, the solution that is less than solution outlet pipe way is detained always in the inside and participates in the circulation, because solution is from solvent vaporizer to solution preparation groove, some ammonia can be remained to the bottom, concentration uniformity is relatively poor, solution preparation groove upper portion sprays the back through the absorption liquid, further absorb the ammonia, and simultaneously, the position is more stable about the middle part.
Furthermore, the outlet pipeline of the solution delivery pump is divided into two branches, one branch is connected with the industrial water inlet pipeline, the reflux circulation is realized, and the other branch is used for collecting solution products.
Furthermore, a nitrogen pipeline is also arranged on the solvent inlet pipeline and used for overhauling and purging.
Furthermore, a water spraying device and a combustible or toxic gas alarm device are arranged above the efficient multi-concentration solution preparation device, a switch valve is arranged on a water spraying inlet pipeline and is interlocked with the combustible or toxic gas alarm device, the system safety is further improved, and early warning and treatment are performed on possible leakage.
Furthermore, the solvent vaporization chamber is a vertical cylinder made of carbon steel or stainless steel, and the heat exchange area of a refrigerant pipeline in the solvent vaporization chamber is 5-15 m2(ii) a The top is provided with a pressure gauge which has a high-pressure alarm function; the connected safety discharge pipeline is provided with a safety valve.
Further, the solution preparation tank is a vertical cylinder made of carbon steel or stainless steel, a gas inlet distributor is arranged at a position 0.3-0.8 m away from the bottom of the solution preparation tank and is annularly arranged, and the direction of the gas inlet distributor faces downwards; arranging industrial water sprayers at a position 0.2-0.5 m away from the upper part, and arranging the industrial water sprayers in an annular manner; the heat exchange area of the internal refrigerant pipeline is 5-15 m2(ii) a The connected safety discharge pipeline is provided with a safety valve.
Further, the solution storage tank is vertical, made of carbon steel or stainless steel and has a volume of 5-15 m3And a liquid level meter is arranged on the side surface, so that the liquid level meter has a high and low liquid level alarm function.
Further, the solution delivery pump is a shield pump or a centrifugal pump, the material is steel lining PTFE, and the flow rate is 3-20 m3Between the pressure and the pressure, a flow meter and an adjusting valve are arranged on a solution product outlet pipeline of the solution delivery pump, and the flow of the solution outlet is controlled to be 2-10 m by interlocking the flow meter and the adjusting valve3Is between/h.
Further, the tail gas collecting tank is vertical, is made of carbon steel or stainless steel and has a volume of 5-15 m3Between, the top is provided with the manometer, possesses high pressure alarming function, and the side is provided with the level gauge.
Furthermore, a switch valve is arranged on the solvent inlet pipeline and is interlocked with a pressure gauge at the top of the solvent vaporization chamber, the pressure gauge is high in pressure, and the switch valve is closed; the solvent inlet pipeline is provided with a pressure reducing valve and a pressure gauge, the pressure gauge has a high-pressure alarm function, the solvent inlet pipeline is provided with a flow meter and an adjusting valve, the flow meter and the adjusting valve are interlocked to control the adding amount of the solvent in the system, and the solvent inlet pipeline is provided with a check valve to prevent the solvent in the solvent vaporization chamber from flowing backwards.
Furthermore, the solution outlet pipeline is provided with a thermometer, has a high-temperature alarm function, and is interlocked with the flow control valve at the inlet of the refrigerant pipeline to control the solution temperature of the solution outlet pipeline.
A preparation process of high-efficiency multi-concentration solution comprises the following steps:
1) the valves at the inlet and the outlet of the medium pipeline are used for introducing a refrigerant into the solution preparation tank and the solvent vaporization chamber, opening the valve of the industrial water inlet pipeline, adding industrial water into the solution preparation tank, then introducing the industrial water into the solution storage tank through the solution outlet pipeline, opening the solution delivery pump and the valve on the pipeline connecting the solution delivery pump and the industrial water inlet pipeline to form a closed loop, keeping the initial liquid level in the solution storage tank controlled in the middle of the solution storage tank and higher than the solution outlet pipeline, and closing the valve of the industrial water inlet pipeline;
2) opening a valve of a solvent inlet pipeline, reducing the pressure of a certain amount of solvent by a pressure reducing valve, then introducing the solvent into the bottom of a solvent vaporization chamber, vaporizing, introducing the obtained gas into the lower part of a solution preparation tank through a gas inlet distributor, uniformly distributing, reversely absorbing with industrial water at the upper part, releasing heat, taking away heat by a refrigerant, and then heating the solvent in the vaporized solvent vaporization chamber to realize the recycling of the heat;
3) the solution obtained in the solution preparation tank is measured by a solution concentration online detection device of a solution outlet pipeline to meet the concentration configuration requirement, the interlocking relation between a flow control valve of a solvent inlet pipeline and a flow control valve of an industrial water inlet pipeline is started, and meanwhile, the extraction amount of a solution product is controlled, so that the balance between the solution product and the total amount of industrial water and solvent inlets is ensured, and the stability of a configuration system is maintained;
3) when the solvent is excessively introduced, discharging the solvent to a tail gas collecting tank through a safety discharge pipeline for temporary storage, and then conveying the solvent to a tail gas absorption system for treatment; when the maintenance is needed, the valves of the tail gas collecting pipeline and the nitrogen pipeline are opened to collect, sweep and replace tail gas.
Further, the pressure of the solvent after decompression in the step 2) is controlled to be 0.2-1.0 MPa.
Further, the concentration of the solution product is 1-30%.
Further, the pressure in the solvent vaporization chamber and the solution preparation tank is controlled to be between 0.1 and 0.5MPa, and the temperature is controlled to be between 10 and 30 ℃.
Further, the refrigerant medium is circulating water, low-temperature water or frozen brine.
The utility model has the beneficial effects that:
1) according to the utility model, heat exchange absorption is carried out on heat generated during solution preparation through the refrigerant pipeline, and the heat is used for vaporization of the solvent, so that the safety is improved, and meanwhile, the energy is fully utilized;
2) the utility model is controlled by interlocking of the detection device and the control device, realizes the production of different concentrations by controlling the use amount of industrial water and solvent, and has high controllability;
3) according to the utility model, through concentration detection and solution backflow, the uniformity of the solution is realized, and the continuous production is realized;
4) the utility model further improves the safety and the environmental protection by arranging the tail gas collecting device and the water spraying device.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
In the figure: 1. a solvent vaporization chamber; 2. a solution preparation tank; 3. a solution storage tank; 4. a solution delivery pump; 5. a tail gas collecting tank; 101. a solvent inlet conduit; 102. an industrial water inlet pipe; 103. a solution outlet conduit; 104. a tail gas collection pipeline; 105. a safe discharge conduit; 106. a nitrogen gas pipeline; 107. a water spray inlet pipe; 108. combustible or toxic gas alarm device.
Detailed Description
The utility model will be further described with reference to the drawings and examples in the following description, but the scope of the utility model is not limited thereto.
As shown in fig. 1, a high-efficiency multi-concentration solution preparation device comprises a solvent vaporization chamber 1, a solution preparation tank 2, a solution storage tank 3, a solution delivery pump 4 and a tail gas collecting tank 5, wherein a solvent inlet pipeline 101 is connected with the side edge of the solvent vaporization chamber 1, the solvent inlet pipeline 101 is provided with a tail gas collecting pipeline 104 and a nitrogen pipeline 106, the upper end side edge of the solvent vaporization chamber 1 is connected with the lower end side edge pipeline of the solution preparation tank 2, the upper ends of the solvent vaporization chamber 1 and the solution preparation tank 2 are respectively connected with a safe discharge pipeline 105, the safe discharge pipeline 105 is connected with the tail gas collecting pipeline 104 to form a pipeline and then is connected with the tail gas collecting tank 5, the tail gas collecting tank 5 is connected with a tail gas absorption treatment system, a refrigerant pipeline penetrates from the lower end side edge of the solution preparation tank 2 and sequentially passes through the solution preparation tank 2 and the solvent vaporization chamber 1, and is arranged in a spiral manner in the solvent vaporization chamber 1 and the solution preparation tank 2, the solution is delivered from the side edge of the lower end of the solution preparation tank 2, the refrigerant is penetrated from the solution preparation tank 2 and penetrates out of the solvent vaporization chamber 1, the upper end inside the solution preparation tank 2 of the solution preparation tank 2 is provided with an industrial water sprayer, the lower end is provided with a gas inlet distributor, the industrial water sprayer is connected with an industrial water inlet pipeline 102, the industrial water inlet pipeline 102 is provided with a flow control valve, the flow control valve is interlocked with the flow control valve on the solvent inlet pipeline 101, so that the use amount of the industrial water is controlled, the preparation of the solutions with different concentrations is realized, the side edge of the solution preparation tank 2 is provided with a solution outlet pipeline 103, the solution storage tank 3 is connected with the solution preparation tank 2 through the solution outlet pipeline 103, the solution storage tank 3 is connected with the solution delivery pump 4 through a pipeline, the outlet pipeline of the solution delivery pump 4 is divided into two branches, one branch is connected with the industrial water inlet pipeline 102 for the backflow of the solution, the other branch is used for collecting a solution product, a flow control valve is arranged on a pipeline for collecting the solution product to control the product extraction amount, an online solution concentration detection device is arranged on a solution outlet pipeline 103, whether concentration needs to be continuously adjusted through backflow or directly discharged is determined through concentration detection, a thermometer is arranged on a pipeline of the solution outlet pipeline 103, a flow control valve is arranged at the inlet of a refrigerant pipeline, the flow control valve is interlocked with the thermometer, and the flow of a refrigerant is adjusted according to the temperature of a solution outlet; a pressure gauge is arranged on the solvent vaporization chamber 1, a switch valve is arranged on the solvent inlet pipeline 101, and feeding is stopped if overpressure exists according to the pressure detection result of the solvent vaporization chamber 1; a water spraying device and a combustible or toxic gas alarm device 108 are arranged above the high-efficiency multi-concentration solution preparation device, and a switch valve is arranged on a water spraying inlet pipeline 107 and is interlocked with the combustible or toxic gas alarm device 108.
A preparation process of high-efficiency multi-concentration solution comprises the following steps:
1) opening valves of an inlet and an outlet of a refrigerant pipeline, introducing refrigerant into the solution preparation tank 2 and the solvent vaporization chamber 1, opening a valve of an industrial water inlet pipeline 102, adding industrial water into the solution preparation tank 2, then introducing the industrial water into the solution storage tank 3 through a solution outlet pipeline 103, opening valves on pipelines connecting the solution delivery pump 4 and the solution delivery pump 4 with the industrial water inlet pipeline 102 to form a closed loop, keeping the initial liquid level in the solution storage tank 3 controlled at the middle part of the solution storage tank 3 and higher than the solution outlet pipeline 103, and closing the valve of the industrial water inlet pipeline 102;
2) opening a valve of a solvent inlet pipeline 101, decompressing a certain amount of solvent by a decompression valve, then feeding the decompressed solvent into the bottom of a solvent vaporization chamber 1 for vaporization, feeding the obtained gas into the lower part of a solution preparation tank 2 through a gas inlet distributor for uniform distribution, reversely absorbing the gas with industrial water at the upper part and releasing heat, taking heat away by a refrigerant, and then heating the solvent in the vaporized solvent vaporization chamber 1 to realize the recycling of the heat;
3) the solution obtained in the solution preparation tank 2 is measured by a solution concentration online detection device of a solution outlet pipeline 103 to meet the concentration configuration requirement, the interlocking relationship between a flow control valve of a solvent inlet pipeline 101 and a flow control valve of an industrial water inlet pipeline 102 is started, and meanwhile, the extraction amount of a solution product is controlled, so that the balance between the solution product and the total amount of industrial water and solvent inlets is ensured, and the stability of a configuration system is maintained;
4) when the solvent is excessively introduced, discharging the solvent to a tail gas collecting tank 5 through a safety discharge pipeline 105 for temporary storage, and then conveying the solvent to a tail gas absorption system for treatment; when the maintenance is needed, the valves of the tail gas collecting pipeline 104 and the nitrogen pipeline 106 are opened to collect, purge and replace the tail gas.
Examples
For example, ammonia water with different concentrations is prepared, and liquid ammonia is used as a solvent.
The solvent vaporization chamber 1 is vertical, is made of stainless steel and is internally provided withThe refrigerant coil is made of carbon steel, the refrigerant is low-temperature water at 7 ℃, and the heat exchange area of the refrigerant pipeline is 10m2The solution preparation tank 2 is vertical, is made of stainless steel, is internally provided with a refrigerant coil, is made of carbon steel, the refrigerant is low-temperature water, and the heat exchange area of the refrigerant pipeline is 10m2The solution storage tank 3 is vertical, made of stainless steel and the like, and has a volume of 10m3The solution delivery pump 4 is a centrifugal pump made of steel lining PTFE and has a flow rate of 15m3/h。
After the liquid ammonia feeding is decompressed, the pressure is controlled to be 0.2Mpa, the opening degree of an inlet adjusting valve of a refrigerant pipeline is adjusted, and the temperature of a material at a solution outlet pipeline 103 is controlled to be about 15-20 ℃; the opening degree of an adjusting valve of the solvent inlet pipeline 101 is adjusted, and the outlet flow of the liquid ammonia flowmeter is controlled to be 2.5m3H, adjusting the opening of an adjusting valve of the industrial water inlet pipeline 102, and controlling the outlet flow of the industrial water flow meter to be 7.5m3H; the opening degree of a product outlet pipeline regulating valve is regulated, and the outlet flow of the ammonia water flowmeter is controlled to be 10m3The test shows that the concentration of the prepared ammonia water is 21 percent, and the pressure of the solvent vaporization chamber 1 is 0.3Mpa in the preparation process.
Claims (8)
1. A high-efficiency multi-concentration solution preparation device is characterized by comprising a solvent vaporization chamber (1), a solution preparation tank (2) and a solution storage tank (3), wherein the solvent vaporization chamber (1), the solution preparation tank (2) and the solution storage tank (3) are sequentially connected, the solvent vaporization chamber (1) is connected with a solvent inlet pipeline (101), a refrigerant pipeline sequentially penetrates through the solution preparation tank (2) and the solvent vaporization chamber (1), the solvent vaporization chamber (1) and the solution preparation tank (2) are arranged in a spiral manner and used for absorbing heat generated in the solution preparation process and using the heat for vaporizing a solvent, an industrial water sprayer is arranged at the upper end inside the solution preparation tank (2), a gas inlet distributor is arranged at the lower end of the solution preparation tank, the industrial water sprayer is connected with the industrial water inlet pipeline (102), a flow control valve is arranged on the industrial water inlet pipeline (102), the flow control valve is interlocked with the flow control valve on the solvent inlet pipeline (101), so that the dosage of industrial water is controlled to realize the preparation of solutions with different concentrations.
2. The efficient multi-concentration solution preparation device according to claim 1, wherein a tail gas collection pipeline (104) is arranged on the solvent inlet pipeline (101), the solvent vaporization chamber (1) and the top of the solution preparation tank (2) are respectively connected with a safety discharge pipeline (105), and the safety discharge pipeline (105) and the tail gas collection pipeline (104) are connected and converged into a pipeline and then connected with the tail gas collection tank (5).
3. The high-efficiency multi-concentration solution preparation device according to claim 1, wherein a solution outlet pipeline (103) is arranged at the side of the solution preparation tank (2), the solution preparation tank (2) is connected with the solution storage tank (3) through the solution outlet pipeline (103), the solution storage tank (3) is connected with the solution delivery pump (4), and an online solution concentration detection device is arranged on the solution outlet pipeline (103).
4. A high efficiency multi concentration solution preparing apparatus according to claim 3, wherein the outlet pipe of the solution delivery pump (4) is divided into two branches, one branch is connected with the industrial water inlet pipe (102), and the other branch is used for collecting the solution product.
5. A high efficiency, multi-concentration solution preparing apparatus according to claim 2, wherein the solvent inlet pipe (101) is further provided with a nitrogen gas pipe (106).
6. The high-efficiency multi-concentration solution preparation device according to claim 1, wherein a water spraying device and a flammable or toxic gas alarm device (108) are arranged above the high-efficiency multi-concentration solution preparation device, and a switch valve is arranged on a water spraying inlet pipeline (107) and is interlocked with the flammable or toxic gas alarm device (108).
7. A high efficiency multi concentration solution preparing apparatus according to claim 3, wherein the solution outlet pipe (103) is provided with a thermometer having a high temperature alarm function and interlocked with a flow control valve of the refrigerant pipe inlet to control the solution temperature of the solution outlet pipe (103).
8. A high efficiency multi-concentration solution preparing apparatus according to claim 1, wherein the solvent inlet pipe (101) is provided with an on-off valve interlocked with a pressure gauge at the top of the solvent vaporizing chamber (1), the pressure gauge is high, and the on-off valve is closed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122781768.5U CN216630696U (en) | 2021-11-15 | 2021-11-15 | High-efficient many concentration solution preparation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122781768.5U CN216630696U (en) | 2021-11-15 | 2021-11-15 | High-efficient many concentration solution preparation device |
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| CN216630696U true CN216630696U (en) | 2022-05-31 |
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| CN202122781768.5U Active CN216630696U (en) | 2021-11-15 | 2021-11-15 | High-efficient many concentration solution preparation device |
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