CN221310621U - Acidification reaction kettle capable of recycling - Google Patents
Acidification reaction kettle capable of recycling Download PDFInfo
- Publication number
- CN221310621U CN221310621U CN202323230616.1U CN202323230616U CN221310621U CN 221310621 U CN221310621 U CN 221310621U CN 202323230616 U CN202323230616 U CN 202323230616U CN 221310621 U CN221310621 U CN 221310621U
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- Prior art keywords
- controller
- sensor
- recovery
- tank
- hydrochloric acid
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 36
- 230000020477 pH reduction Effects 0.000 title claims abstract description 36
- 238000004064 recycling Methods 0.000 title claims abstract description 17
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 83
- 238000011084 recovery Methods 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 230000001276 controlling effect Effects 0.000 claims abstract description 9
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 230000029219 regulation of pH Effects 0.000 claims abstract description 4
- 230000008859 change Effects 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 3
- 229910000041 hydrogen chloride Inorganic materials 0.000 abstract description 10
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 abstract description 10
- 239000007789 gas Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- NBZBKCUXIYYUSX-UHFFFAOYSA-N iminodiacetic acid Chemical compound OC(=O)CNCC(O)=O NBZBKCUXIYYUSX-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000047 product Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 238000011033 desalting Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006356 dehydrogenation reaction Methods 0.000 description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Abstract
The utility model discloses an acidification reaction kettle capable of recycling, which comprises a kettle body, a temperature control assembly, a recycling tank and a PH regulation and control assembly, wherein in an acidification reaction, a first PH sensor is used for monitoring the PH value of a solution, a first controller is used for controlling to open a second electric control valve when the PH is too high, hydrochloric acid is added to reach a preset value, and when the PH is too low, the first controller is used for controlling to open the first electric control valve, water is added to reach the preset value, so that the acidification reaction effect is improved. In addition to iminodiacetic acid which is a target product in the solution of the kettle body, the kettle further comprises redundant hydrochloric acid, the temperature control component is regulated and controlled to the temperature at which hydrogen chloride volatilizes, so that the hydrochloric acid volatilizes to form hydrogen chloride gas, the hydrogen chloride gas passes through the cooling component and enters the recovery tank, part of water can be stored in the recovery tank to form hydrochloric acid, and in the next acidification reaction, the hydrochloric acid can be led into the kettle body from the recovery port through the material outlet of the recovery tank, so that the recycling of resources is realized.
Description
Technical Field
The utility model relates to the technical field of iminodiacetic acid production, in particular to an acidification reaction kettle capable of being recycled.
Background
The synthesis of iminodiacetic acid by diethanolamine method mainly comprises dehydrogenation, acidification and crystallization procedures. In the acidification process, if the consumption of hydrochloric acid is excessive, the product is crystallized and separated out too early, so that the product is entrained in the desalting process, the yield of the final product is not high, the content is reduced, and the index required by the market is not reached; if the consumption of hydrochloric acid is too low, the desalting effect is insufficient due to too high pH, and the product contains a large amount of salt during crystallization and cannot be completely converted into a final target product, so that the reaction yield is lower and the product quality is reduced.
In the related art, the use amount of hydrochloric acid is controlled to be directly and quantitatively input into hydrochloric acid or controlled according to the PH of the solution in the reaction kettle, hydrochloric acid is manually added when the PH is too high, water is manually added when the PH is too low, so that the method is inconvenient.
Disclosure of utility model
The utility model provides an acidification reaction kettle capable of recycling, which can recycle active ingredients of reaction liquid and mother liquid, automatically adjust the PH of the solution to a preset value and promote the acidification reaction effect.
The utility model is realized by the following technical scheme:
The utility model provides an acidification reaction kettle capable of recycling, includes cauldron body, control by temperature change subassembly, recovery jar and PH regulation and control subassembly, the upper portion of cauldron body is provided with exhaust line, recovery mouth, first feed inlet and second feed inlet, first feed inlet is connected with the water tank and is provided with first automatically controlled valve between the two, the second feed inlet is connected with the hydrochloric acid tank and is provided with the second automatically controlled valve between the two, exhaust line with recovery jar intercommunication and be provided with cooling module between the two, control by temperature change subassembly is suitable for regulating and control the inside temperature of cauldron body, the bottom of recovery jar is provided with the material export, the material export is higher than recovery mouth, the material export with recovery mouth intercommunication and be provided with the ooff valve between the two; the PH regulating and controlling assembly comprises a first PH sensor and a first controller, wherein the first PH sensor is suitable for monitoring the PH value of the internal solution of the kettle body, the input end of the first controller is connected with the first PH sensor, and the output end of the first controller is respectively connected with the first electric control valve and the second electric control valve.
Further, the cooling assembly comprises a circulating cooling water pipe which is wound on the exhaust pipeline.
Further, a buffer tank is provided between the cooling assembly and the recovery tank.
Further, the switch valve is detachably connected with the recycling port, the acidification reaction kettle further comprises a plug, and the plug can be connected with the recycling port in an adaptive manner.
Further, the temperature control assembly comprises a temperature sensor, a second controller and an electric heater, wherein the temperature sensor is suitable for monitoring the temperature inside the kettle body, the input end of the second controller is connected with the temperature sensor, the output end of the second controller is connected with the electric heater, and the electric heater is arranged on the inner wall of the kettle body.
Further, be provided with the second PH sensor in the recovery jar, the second PH sensor is suitable for the PH value of monitoring the interior solution of recovery jar, the recovery jar is provided with the third feed inlet, the third feed inlet with the water tank intercommunication and be provided with the third automatically controlled valve between the two, the input of first controller with the second PH sensor is connected, the output of first controller with the third automatically controlled valve is connected.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
The acidification reaction kettle comprises a kettle body, a temperature control assembly, a recovery tank and a PH regulation and control assembly, wherein in the acidification reaction, the PH value of a solution is monitored through a first PH sensor, when the PH is too high, a first controller controls to open a second electric control valve, hydrochloric acid is added until the PH is reduced to a preset value, when the PH is too low, the first controller controls to open the first electric control valve, water is added until the PH is increased to the preset value, and the acidification reaction effect is improved. Besides the iminodiacetic acid which is a target product, the solution of the kettle body also comprises redundant hydrochloric acid, the temperature control component can be regulated and controlled to the temperature of acidification reaction, and can also be regulated and controlled to the temperature of volatilization of hydrogen chloride, so that the hydrochloric acid volatilizes to form hydrogen chloride gas, the hydrogen chloride gas passes through the cooling component and enters the recovery tank, part of water can be stored in the recovery tank to form hydrochloric acid, and in the next acidification reaction, the hydrochloric acid can be led into the kettle body from the recovery port through the material outlet of the recovery tank, so that the recycling of resources is realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:
Fig. 1 is a schematic structural diagram of an acidification reaction kettle capable of recycling according to an embodiment of the utility model.
In the drawings, the reference numerals and corresponding part names:
10-a kettle body; 11-an exhaust line; 12-recovering port; 13-a first feed inlet; 14-a second feed inlet; 15-a water tank; 16-a first electrically controlled valve; 17-hydrochloric acid box; 18-a second electrically controlled valve;
20-a temperature control assembly; 21-a temperature sensor; 22-a second controller; 23-an electric heater;
30-a recovery tank; 31-a cooling assembly; 32-a buffer tank; 33-a third electrically controlled valve; 34-a second PH sensor; 35-a third feed inlet;
40-PH regulatory components; 41-a first PH sensor; 42-first controller.
Detailed Description
As described in the background art, the synthesis of iminodiacetic acid by the diethanolamine method mainly comprises the steps of dehydrogenation, acidification and crystallization. In the acidification process, if the consumption of hydrochloric acid is excessive, the product is crystallized and separated out too early, so that the product is entrained in the desalting process, the yield of the final product is not high, the content is reduced, and the index required by the market is not reached; if the consumption of hydrochloric acid is too low, the desalting effect is insufficient due to too high pH, and the product contains a large amount of salt during crystallization and cannot be completely converted into a final target product, so that the reaction yield is lower and the product quality is reduced. In the related art, the use amount of hydrochloric acid is controlled to be directly and quantitatively input into hydrochloric acid or controlled according to the PH of the solution in the reaction kettle, hydrochloric acid is manually added when the PH is too high, water is manually added when the PH is too low, so that the method is inconvenient.
Based on the above, the inventor creates the acidification reaction kettle capable of being recycled so as to solve the technical problems.
For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.
Examples
Referring to fig. 1, a recyclable acidification reaction kettle comprises a kettle body 10, a temperature control assembly 20, a recovery tank 30 and a PH adjusting assembly 40. The upper portion of cauldron body 10 is provided with exhaust pipe 11, recovery mouth 12, first feed inlet 13 and second feed inlet 14, first feed inlet 13 is connected with water tank 15 and is provided with first automatically controlled valve 16 between the two, second feed inlet 14 is connected with hydrochloric acid tank 17 and is provided with second automatically controlled valve 18 between the two, exhaust pipe 11 with recovery jar 30 intercommunication and be provided with cooling module 31 between the two. Here, the water tank 15 may supply water to the inside of the tank body 10 to raise PH, and the hydrochloric acid tank 17 may supply hydrochloric acid to the inside of the tank body 10 to lower PH. Here, the cooling unit 31 is provided to reduce the temperature of the hydrogen chloride gas, so that it can be dissolved in the recovery tank 30 to some extent.
The temperature control assembly 20 is suitable for regulating and controlling the internal temperature of the kettle body 10, a material outlet is arranged at the bottom of the recovery tank 30 and higher than the recovery port 12, and the material outlet is communicated with the recovery port 12 and provided with a switch valve therebetween. Here, the recovery of hydrochloric acid is performed after the completion of the reaction, and the on-off valve is closed during the normal acidification reaction. For example, the on-off valve may be an electric valve. The PH adjusting and controlling assembly 40 includes a first PH sensor 41 and a first controller 42, the first PH sensor 41 is adapted to monitor the PH value of the internal solution of the tank body 10, an input end of the first controller 42 is connected to the first PH sensor 41, and an output end of the first controller 42 is connected to the first electric control valve 16 and the second electric control valve 18, respectively. Here, that is, the first controller 42 can control the PH in the tank body 10 to an optimal reaction state by controlling the opening and closing of the first and second electronically controlled valves 16 and 18, which is also equivalent to controlling the amount of hydrochloric acid.
The acidification reaction kettle comprises a kettle body 10, a temperature control assembly 20, a recovery tank 30 and a PH regulating and controlling assembly 40, wherein in the acidification reaction, the PH value of a solution is monitored through a first PH sensor 41, when the PH is too high, a first controller 42 controls to open a second electric control valve 18, hydrochloric acid is added until the PH is reduced to a preset value, when the PH is too low, the first controller 42 controls to open the first electric control valve 16, water is added until the PH is increased to the preset value, and the acidification reaction effect is improved. In addition to iminodiacetic acid which is a target product in the solution of the kettle body 10, the temperature control component 20 not only can regulate and control the temperature of the acidification reaction, but also can regulate and control the temperature of the volatilization of hydrogen chloride, so that the hydrochloric acid volatilizes to form hydrogen chloride gas, part of water can be stored in the recovery tank 30 through the cooling component 31 to form hydrochloric acid, and in the next acidification reaction, the hydrochloric acid can be led into the kettle body 10 from the recovery port 12 through the material outlet of the recovery tank 30, so that the recycling of resources is realized.
In further embodiments, the cooling assembly 31 comprises a recirculating cooling water tube wrapped around the exhaust conduit 11. The cooling of the hydrogen chloride gas is simple and convenient.
In a further embodiment, a buffer tank 32 is provided between the cooling assembly 31 and the recovery tank 30. By this arrangement, the hydrochloric acid in the recovery tank 30 can be effectively prevented from flowing back.
In further embodiments, the on-off valve is detachably connected to the recovery port 12, and the acidification reaction tank further comprises a plug, which is adapted to be connected to the recovery port 12. During normal acidification reaction, the recovery port 12 can be closed by a plug, and when recovered hydrochloric acid is needed to be utilized, the on-off valve is connected, so that the hydrochloric acid can be conveniently collected through the on-off valve.
In another embodiment, the temperature control assembly 20 includes a temperature sensor 21, a second controller 22 and an electric heater 23, wherein the temperature sensor 21 is adapted to monitor the temperature inside the kettle body 10, an input end of the second controller 22 is connected with the temperature sensor 21, an output end of the second controller 22 is connected with the electric heater 23, and the electric heater 23 is disposed on an inner wall of the kettle body 10. So set up, the control by temperature change is simple and convenient.
In another embodiment, a second PH sensor 34 is disposed in the recovery tank 30, the second PH sensor 34 is adapted to monitor the PH value of the solution in the recovery tank 30, the recovery tank 30 is provided with a third feed port 35, the third feed port 35 is in communication with the water tank 15, and a third electric control valve 33 is disposed therebetween, an input end of the first controller 42 is connected to the second PH sensor 34, and an output end of the first controller 42 is connected to the third electric control valve 33. So configured, to avoid that the hydrochloric acid in the recovery tank 30 reaches a volatile concentration (37% -38%), the third electrically controlled valve 33 is opened by the first controller 42 to fill water into the recovery tank 30, so that the concentration of the hydrochloric acid in the recovery tank 30 is kept substantially stable and does not exceed 37%.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the utility model, and is not meant to limit the scope of the utility model, but to limit the utility model to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (6)
1. The utility model provides a but acidizing reation kettle of circulation recovery, its characterized in that includes cauldron body, control by temperature change subassembly, recovery jar and PH regulation and control subassembly, the upper portion of cauldron body is provided with exhaust pipe, recovery mouth, first feed inlet and second feed inlet, first feed inlet is connected with the water tank and is provided with first automatically controlled valve between the two, the second feed inlet is connected with the hydrochloric acid tank and is provided with the second automatically controlled valve between the two, exhaust pipe with recovery jar intercommunication and be provided with cooling module between the two, control by temperature change subassembly is suitable for regulating and control the inside temperature of cauldron body, the bottom of recovery jar is provided with the material export, the material export is higher than recovery mouth, the material export with recovery mouth intercommunication and be provided with the ooff valve between the two; the PH regulating and controlling assembly comprises a first PH sensor and a first controller, wherein the first PH sensor is suitable for monitoring the PH value of the internal solution of the kettle body, the input end of the first controller is connected with the first PH sensor, and the output end of the first controller is respectively connected with the first electric control valve and the second electric control valve.
2. The recyclable acidification reaction kettle according to claim 1, wherein the cooling assembly comprises a circulating cooling water pipe wound on the exhaust pipeline.
3. The recyclable acidification reactor of claim 2, wherein a buffer tank is disposed between the cooling assembly and the recovery tank.
4. The recyclable acidification reaction kettle according to claim 1, wherein the on-off valve is detachably connected to the recycling port, and further comprising a plug adapted to be connected to the recycling port.
5. The recyclable acidification reaction kettle according to claim 1, wherein the temperature control assembly comprises a temperature sensor, a second controller and an electric heater, the temperature sensor is suitable for monitoring the temperature inside the kettle body, the input end of the second controller is connected with the temperature sensor, the output end of the second controller is connected with the electric heater, and the electric heater is arranged on the inner wall of the kettle body.
6. The recyclable acidification reactor according to any one of claims 1 to 5, wherein a second PH sensor is arranged in the recycling tank, the second PH sensor is adapted to monitor the PH value of the solution in the recycling tank, the recycling tank is provided with a third feed inlet, the third feed inlet is communicated with the water tank, a third electric control valve is arranged between the third feed inlet and the water tank, the input end of the first controller is connected with the second PH sensor, and the output end of the first controller is connected with the third electric control valve.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221310621U true CN221310621U (en) | 2024-07-12 |
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| GR01 | Patent grant |