CN222900301U - High potassium mother liquor recovery unit and potassium chloride production system - Google Patents
High potassium mother liquor recovery unit and potassium chloride production system Download PDFInfo
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- CN222900301U CN222900301U CN202421508276.6U CN202421508276U CN222900301U CN 222900301 U CN222900301 U CN 222900301U CN 202421508276 U CN202421508276 U CN 202421508276U CN 222900301 U CN222900301 U CN 222900301U
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Abstract
本实用新型提供了一种高钾母液回收装置及氯化钾生产系统。该高钾母液回收装置包括：第一回收罐，具有容纳腔，第一回收罐包括与容纳腔连通的第一进料口和第一出料口；固液分离装置，固液分离装置包括第二进料口、第二出料口以及溢流口，第二进料口与第一出料口可选择地连通；第一输送管路，第一输送管路的进料端与第二出料口可选择地连通，第一输送管路的出料端被构造为与脱水设备连通；以及液相回收组件，包括第二回收罐，第二回收罐的进液端与溢流口连通。本实用新型的技术方案的高钾母液回收装置，能够解决氯化钾生产过程，现有回收装置对高钾母液中的固相部分无法进行有效回收的问题。
The utility model provides a high-potassium mother liquor recovery device and a potassium chloride production system. The high-potassium mother liquor recovery device includes: a first recovery tank, having a containing chamber, the first recovery tank including a first feed port and a first discharge port connected to the containing chamber; a solid-liquid separation device, the solid-liquid separation device including a second feed port, a second discharge port and an overflow port, the second feed port and the first discharge port can be selectively connected; a first conveying pipeline, the feed end of the first conveying pipeline can be selectively connected to the second discharge port, the discharge end of the first conveying pipeline is configured to be connected to a dehydration device; and a liquid phase recovery component, including a second recovery tank, the liquid feed end of the second recovery tank is connected to the overflow port. The high-potassium mother liquor recovery device of the technical solution of the utility model can solve the problem that the existing recovery device cannot effectively recover the solid phase part in the high-potassium mother liquor in the potassium chloride production process.
Description
Technical Field
The utility model relates to the technical field of potassium chloride production, in particular to a high-potassium mother liquor recovery device and a potassium chloride production system.
Background
In the production process of potassium chloride, a large amount of high-potassium mother liquor (namely a solution containing higher concentration potassium ions) is contained in the overflow liquor of the crystallizer and the overflow liquor of the refined potassium thickener, and the high-potassium mother liquor enters a high-potassium mother liquor recovery tank and is uniformly introduced into a sedimentation tank or a tail salt tank, in the tail salt tank, clear liquor after sedimentation treatment is introduced into a brine mixing process for producing high-grade potassium chloride, and in the sedimentation tank, the clear liquor after sedimentation is introduced into a mineral sedimentation tank for mineral sunning.
In actual production, after the overflow liquid of the crystallizer and the overflow liquid of the refined potassium thickener are precipitated, the potassium content in the solid phase part is higher than the potassium content in the liquid phase, the potassium chloride content in the solid phase is about 65 percent, and the salt content in the solid phase is about 15 percent, however, the recovery mode only can recover the liquid phase part in the high-potassium mother solution, and the solid phase part is precipitated to the bottom of the tank together with foam and impurities when being precipitated in a tail salt tank or a sedimentation tank, so that the efficient recovery cannot be performed.
Disclosure of utility model
The utility model mainly aims to provide a high-potassium mother liquor recovery device and a potassium chloride production system, which can solve the problem that the existing recovery device cannot effectively recover a solid phase part in high-potassium mother liquor in the potassium chloride production process.
In order to achieve the above object, according to an aspect of the present utility model, there is provided a high-potassium mother liquor recovery apparatus including a first recovery tank having a receiving chamber, the first recovery tank including a first feed port and a first discharge port communicating with the receiving chamber, a solid-liquid separation apparatus including a second feed port, a second discharge port, and an overflow port, the second feed port being selectively communicated with the first discharge port, a first transport pipe having a feed end in selective communication with the second discharge port, a discharge end of the first transport pipe being configured to communicate with a dehydration device, and a liquid phase recovery assembly including the second recovery tank having a feed end in communication with the overflow port.
Further, the high-potassium mother liquor recovery device further comprises a refined potassium conveying pipeline and a low-sodium conveying pipeline, the discharge end of the first conveying pipeline is selectively communicated with the feed end of the refined potassium conveying pipeline or the feed end of the low-sodium conveying pipeline, when the potassium chloride content of the solid-phase material in the solid-liquid separation device is larger than a preset value, the discharge end of the first conveying pipeline is communicated with the feed end of the refined potassium conveying pipeline, and when the potassium chloride content of the solid-phase material in the solid-liquid separation device is smaller than the preset value, the discharge end of the first conveying pipeline is communicated with the feed end of the low-sodium conveying pipeline.
Further, the high-potassium mother liquor recycling device further comprises a second conveying pipeline and a first conveying pump, one end of the second conveying pipeline is communicated with the first discharging hole, the other end of the second conveying pipeline is communicated with the second feeding hole, and the first conveying pump is arranged on the second conveying pipeline.
Further, the first recovery tank, the second conveying pipelines and the first conveying pumps are multiple, the first recovery tanks and the second conveying pipelines are arranged in one-to-one correspondence, and at least one first conveying pump is arranged on each second conveying pipeline.
Further, the solid-liquid separation device further comprises a tank body and a stirring mechanism, wherein the second feeding hole and the second discharging hole are formed in the tank body, and the stirring mechanism is arranged in the tank body.
Further, the solid-liquid separation device further comprises a circulating pipeline, the feeding end and the discharging end of the circulating pipeline are both communicated with the inner cavity of the tank body, and a second conveying pump is arranged on the circulating pipeline.
Further, the circulating pipeline is also provided with a sampling port.
Further, the high-potassium mother liquor recovery device also comprises a dehydration device.
Further, the liquid phase recovery assembly further comprises a third conveying pipeline and an overflow pipeline, one end of the overflow pipeline is communicated with the overflow port, the other end of the overflow pipeline is communicated with the liquid inlet end of the second recovery tank, one end of the third conveying pipeline is communicated with the liquid outlet end of the second recovery tank, and a third conveying pump is arranged on the third conveying pipeline.
According to another aspect of the utility model, a potassium chloride production system is provided, which comprises a crystallizer and the high-potassium mother liquor recovery device.
By adopting the technical scheme of the utility model, the high-potassium mother liquor enters the accommodating cavity through the first feed port and is subjected to preliminary precipitation, the precipitated solid phase part containing potassium chloride and a little clear liquid are discharged through the first discharge port and enter the solid-liquid separation device through the second feed port, after solid-liquid separation is carried out through the solid-liquid separation device, the liquid phase part flows out through the overflow port and enters the second recovery tank, so that the recovery of the liquid phase part in the high-potassium mother liquor is realized, the solid phase part enters the first conveying pipeline through the second discharge port and is discharged to the dehydration equipment from the discharge end of the first conveying pipeline, and the dehydration equipment dehydrates the solid phase part, thereby realizing the effective recovery of the solid phase part after the high-potassium mother liquor is precipitated.
Drawings
The accompanying drawings, which are included to provide a further understanding 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 utility model. Attached at
In the figure:
Fig. 1 shows a schematic diagram of the structure of a potassium chloride production system according to an embodiment of the present utility model.
Wherein the above figures include the following reference numerals:
10. The device comprises a first recovery tank, 11, a containing cavity, 12, a first conveying pump, 13, a second conveying pipeline, 14, a fourth conveying pump, 15, a fourth conveying pipeline, 16, a fifth conveying pipeline, 17, a fifth conveying pump, 20, a solid-liquid separation device, 21, a tank body, 22, a circulating pipeline, 23, a second conveying pump, 30, a first conveying pipeline, 31, a fourth conveying pump, 40, a second recovery tank, 50, a refined potassium conveying pipeline, 60, a low sodium conveying pipeline, 70, a third conveying pipeline, 80, a third conveying pump, 90, an overflow pipeline, 100, a crystallizer, 200 and a fine crystallizer.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
As shown in FIG. 1, the present utility model provides a high-potassium mother liquor recovery apparatus comprising a first recovery tank 10 having a receiving chamber 11, the first recovery tank 10 comprising a first feed port and a first discharge port in communication with the receiving chamber 11, a solid-liquid separation device 20, the solid-liquid separation device 20 comprising a second feed port, a second discharge port and an overflow port, the second feed port being in selective communication with the first discharge port, a first transfer line 30, a feed end of the first transfer line 30 being in selective communication with the second discharge port, a discharge end of the first transfer line 30 being configured to be in communication with a dewatering device, and a liquid phase recovery assembly comprising a second recovery tank 40, a feed end of the second recovery tank 40 being in communication with the overflow port.
In this embodiment, the high-potassium mother liquor enters the accommodating cavity 11 through the first feed port and is subjected to preliminary precipitation, the precipitated solid phase part containing potassium chloride and a little clear liquid enter the solid-liquid separation device 20 through the second feed port after being discharged through the first discharge port, after being subjected to solid-liquid separation through the solid-liquid separation device 20, the liquid phase part flows out through the overflow port and enters the second recovery tank 40, so that the recovery of the liquid phase part in the high-potassium mother liquor is realized, the solid phase part enters the first conveying pipeline 30 through the second discharge port and is discharged to the dehydration equipment from the discharge end of the first conveying pipeline 30, and the dehydration equipment dehydrates the solid phase part, thereby realizing the effective recovery of the solid phase part after the high-potassium mother liquor is precipitated.
In one embodiment, the dewatering device is a centrifuge, and the specific structure of the centrifuge may be a conventional technology, which is not described herein.
In one embodiment, the solid-liquid separation device 20 is a thickener or centrifuge.
As shown in fig. 1, in one embodiment of the present utility model, the high-potassium mother liquor recovery device further includes a refined potassium conveying pipeline 50 and a low-sodium conveying pipeline 60, wherein the discharge end of the first conveying pipeline 30 is selectively communicated with the feed end of the refined potassium conveying pipeline 50 or the feed end of the low-sodium conveying pipeline 60, when the potassium chloride content of the solid phase material in the solid-liquid separation device 20 is greater than a preset value, the discharge end of the first conveying pipeline 30 is communicated with the feed end of the refined potassium conveying pipeline 50, and when the potassium chloride content of the solid phase material in the solid-liquid separation device 20 is less than a preset value, the discharge end of the first conveying pipeline 30 is communicated with the feed end of the low-sodium conveying pipeline 60.
In this embodiment, the potassium chloride production process includes a potassium refining process and a sodium reduction process, wherein the potassium refining process refers to a process step of further purifying a crude product of potassium chloride to achieve higher purity and quality standards, the sodium reduction process refers to a process step of reducing sodium content in the potassium chloride product by a specific process step to improve purity of the product, dewatering equipment is disposed in both the potassium refining process and the sodium reduction process, a discharge end of the potassium refining conveying pipeline 50 is communicated with the dewatering equipment disposed in the potassium refining process, and a discharge end of the sodium reduction conveying pipeline 60 is communicated with the dewatering equipment disposed in the sodium reduction process.
In the process of recovering the high-potassium mother liquor, the potassium chloride content in the solid phase part in the solid-liquid separation device 20 can be detected, if the potassium chloride content is greater than a preset value, the discharge end of the first conveying pipeline 30 is communicated with the refined potassium conveying pipeline 50, at this time, the solid phase part after the high-potassium mother liquor precipitation is discharged into the refined potassium conveying pipeline 50 through the discharge end of the first conveying pipeline 30, and then discharged to the dehydration equipment in the refined potassium process through the refined potassium conveying pipeline 50, and if the potassium chloride content is less than the preset value, the discharge end of the first conveying pipeline 30 is communicated with the low-sodium conveying pipeline 60, at this time, the solid phase part after the high-potassium mother liquor precipitation is discharged to the low-sodium conveying pipeline 60 through the discharge end of the first conveying pipeline 30 and then discharged from the low-sodium conveying pipeline 60 to the dehydration equipment in the low-sodium process, thereby realizing the effective recovery of the solid phase part after the high-potassium mother liquor precipitation.
In one embodiment, the preset value ranges from 65% to 70%.
As shown in fig. 1, in one embodiment of the present utility model, the high-potassium mother liquor recovery device further includes a second conveying pipeline 13 and a first conveying pump 12, one end of the second conveying pipeline 13 is communicated with the first discharge port, the other end of the second conveying pipeline 13 is communicated with the second feed port, and the first conveying pump 12 is mounted on the second conveying pipeline 13.
By the above arrangement, the solid phase portion and the clear liquid after the precipitation of the high-potassium mother liquor in the housing chamber 11 can be sent to the solid-liquid separation device 20 for solid-liquid separation.
In one embodiment of the present utility model, the first recovery tank 10, the second conveying pipeline 13 and the first conveying pump 12 are all multiple, the first recovery tanks 10 and the second conveying pipelines 13 are arranged in a one-to-one correspondence manner, and at least one first conveying pump 12 is arranged on each second conveying pipeline 13.
Through the arrangement, the conveying efficiency of the solid phase part and the clear liquid after the high-potassium mother solution is precipitated can be improved.
As shown in fig. 1, in one embodiment of the present utility model, the solid-liquid separation device 20 further includes a tank 21 and a stirring mechanism, where the second inlet and the second outlet are both disposed on the tank 21, and the stirring mechanism is disposed in the tank 21.
In this embodiment, the stirring mechanism is used to stir the solid phase portion and the clear liquid after the precipitation of the high-potassium mother liquor in the tank 21, so as to prevent the solid phase portion from being deposited at the bottom of the tank 21 and being difficult to be discharged from the second discharge port.
As shown in fig. 1, in one embodiment of the present utility model, the solid-liquid separation device 20 further includes a circulation pipe 22, where a feeding end and a discharging end of the circulation pipe 22 are both communicated with the inner cavity of the tank 21, and a second transfer pump 23 is disposed on the circulation pipe 22.
In this embodiment, the circulation line 22 can enhance the separation of the solid phase portion from the clear liquid, so that the solid phase portion is easier to settle to the bottom of the tank 21, and at the same time, the solid phase portion is prevented from accumulating at the bottom of the tank 21, and is difficult to be discharged from the second discharge port.
In one embodiment of the present utility model, a sampling port is also provided on the circulation line 22.
In this embodiment, the sampling port is provided to facilitate detection of the potassium chloride content in the solid phase portion in the solid-liquid separation device 20.
In one embodiment of the utility model, as shown in FIG. 1, the high potassium mother liquor recovery apparatus further comprises a dewatering device.
In this embodiment, the dehydration apparatus is used to dehydrate the potassium chloride-containing solid phase material discharged from the discharge end of the first conveying line 30.
As shown in fig. 1, in one embodiment of the present utility model, the liquid phase recovery assembly further includes a third conveying pipeline 70 and an overflow pipeline 90, one end of the overflow pipeline 90 is communicated with the overflow port, the other end of the overflow pipeline 90 is communicated with the liquid inlet end of the second recovery tank 40, one end of the third conveying pipeline 70 is communicated with the liquid outlet end of the second recovery tank 40, and a third conveying pump 80 is disposed on the third conveying pipeline 70.
In this embodiment, the liquid phase portion after solid-liquid separation by the solid-liquid separation device 20 enters the second recovery tank 40 through the overflow pipeline 90, so as to recover the liquid phase portion in the high-potassium mother liquor, and the liquid phase portion in the second recovery tank 40 can be discharged to the tail salt pond or the sedimentation pond through the third conveying pipeline 70.
In one embodiment, a fourth transfer pump 31 is provided on the first transfer line 30.
As shown in fig. 1, according to another aspect of the present utility model, there is provided a potassium chloride production system comprising a crystallizer 100 and the above-mentioned high-potassium mother liquor recovery apparatus.
In this embodiment, the potassium chloride production system further includes a fourth conveying pipeline 15 and a fourth conveying pump 14, the fourth conveying pump 14 is disposed on the fourth conveying pipeline 15, one end of the fourth conveying pipeline 15 is communicated with the overflow port of the crystallizer 100, the other end of the fourth conveying pipeline 15 is communicated with the first feed port of the first recovery tank 10, overflow liquid at the overflow port is conveyed into the accommodating cavity 11 through the fourth conveying pump 14 via the fourth conveying pipeline 15, the overflow liquid enters the accommodating cavity 11 to perform preliminary precipitation, a precipitated solid phase part containing potassium chloride and a little clear liquid are discharged through the first discharge port and then enter the solid-liquid separation device 20 through the second feed port, after solid-liquid separation is performed through the solid-liquid separation device 20, the liquid phase part flows out through the overflow port and enters the second recovery tank 40, recovery of the liquid phase part in the overflow liquid is realized, the solid phase part enters the first conveying pipeline 30 through the second discharge port, and then is discharged from the discharge port of the first conveying pipeline 30 to the dehydration device, and the dehydration device dehydrates the solid phase part, thereby realizing effective recovery of the solid phase part after overflow liquid precipitation.
It should be noted that, the high-potassium mother liquor recovery device of the potassium chloride production system has all technical schemes and all technical effects of the above-mentioned high-potassium mother liquor recovery device, and will not be described here again.
As shown in fig. 1, in an embodiment of the present utility model, the potassium chloride production system further includes a fine grain device 200 (an apparatus for preparing fine crystals in laboratory or industrial production, mainly for controlling conditions of crystal growth to obtain fine crystals with specific characteristics), a fifth conveying pipe 16 and a fifth conveying pump 17, the fifth conveying pump 17 is disposed on the fifth conveying pipe 16, one end of the fifth conveying pipe 16 is communicated with an overflow port of the fine grain device 200, the other end of the fifth conveying pipe 16 is communicated with a first feed port of the first recovery tank 10, overflow liquid at the overflow port of the fine grain device 200 is conveyed into the accommodating chamber 11 through the fifth conveying pipe 16 by the fifth conveying pump 17, the overflow liquid enters the accommodating chamber 11 for preliminary precipitation, a solid phase portion containing potassium chloride and a little clear liquid after precipitation enter the solid-liquid separation device 20 through the first feed port, after solid-liquid separation by the solid-liquid separation device 20, a liquid phase portion flows out through the overflow port and enters the second recovery tank 40, a liquid phase portion in the overflow port is dehydrated, and a solid phase portion in the overflow liquid portion enters the second recovery tank 40 through the second feed port, and a solid phase portion is dehydrated by the second recovery tank 30, and a solid phase portion is discharged from the first recovery tank through the first feed port, and a solid phase portion is dehydrated, and a solid phase portion is recovered by the solid phase portion is discharged from the solid phase portion is dehydrated by the solid phase recovery device.
From the above description, it can be seen that the above embodiment of the utility model achieves the following technical effects that the high-potassium mother liquor enters the accommodating cavity through the first feed port and is subjected to preliminary precipitation, the precipitated solid phase part containing potassium chloride and a little clear liquid enter the solid-liquid separation device through the second feed port after being discharged through the first discharge port, the liquid phase part flows out through the overflow port and enters the second recovery tank after being subjected to solid-liquid separation through the solid-liquid separation device, the recovery of the liquid phase part in the high-potassium mother liquor is achieved, the solid phase part enters the first conveying pipeline through the second discharge port and is discharged to the dehydration equipment from the discharge end of the first conveying pipeline, and the dehydration equipment dehydrates the solid phase part, so that the solid phase part after the precipitation of the high-potassium mother liquor is effectively recovered.
It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. A high potassium mother liquor recovery device, comprising:
A first recovery tank (10) having a receiving cavity (11), the first recovery tank (10) comprising a first feed port and a first discharge port in communication with the receiving cavity (11);
The solid-liquid separation device (20) comprises a second feeding port, a second discharging port and an overflow port, wherein the second feeding port is selectively communicated with the first discharging port;
A first delivery line (30), the feed end of the first delivery line (30) being in selective communication with the second discharge port, the discharge end of the first delivery line (30) being configured to communicate with a dewatering device, and
The liquid phase recovery assembly comprises a second recovery tank (40), and the liquid inlet end of the second recovery tank (40) is communicated with the overflow port.
2. The high-potassium mother liquor recycling device according to claim 1, further comprising a refined potassium conveying pipeline (50) and a low-sodium conveying pipeline (60), wherein the discharge end of the first conveying pipeline (30) is selectively communicated with the feed end of the refined potassium conveying pipeline (50) or the feed end of the low-sodium conveying pipeline (60), when the potassium chloride content of the solid phase material in the solid-liquid separation device (20) is larger than a preset value, the discharge end of the first conveying pipeline (30) is communicated with the feed end of the refined potassium conveying pipeline (50), and when the potassium chloride content of the solid phase material in the solid-liquid separation device (20) is smaller than the preset value, the discharge end of the first conveying pipeline (30) is communicated with the feed end of the low-sodium conveying pipeline (60).
3. The high-potassium mother liquor recovery device according to claim 1, further comprising a second conveying pipeline (13) and a first conveying pump (12), wherein one end of the second conveying pipeline (13) is communicated with the first discharge port, the other end of the second conveying pipeline (13) is communicated with the second feed port, and the first conveying pump (12) is mounted on the second conveying pipeline (13).
4. A high-potassium mother liquor recovery device according to claim 3, wherein the first recovery tank (10), the second conveying pipeline (13) and the first conveying pump (12) are all plural, the plural first recovery tanks (10) and the plural second conveying pipelines (13) are arranged in one-to-one correspondence, and at least one first conveying pump (12) is arranged on each second conveying pipeline (13).
5. The high-potassium mother liquor recovery device according to claim 1, wherein the solid-liquid separation device (20) further comprises a tank body (21) and a stirring mechanism, the second feed inlet and the second discharge outlet are both arranged on the tank body (21), and the stirring mechanism is arranged in the tank body (21).
6. The high-potassium mother liquor recovery device according to claim 5, wherein the solid-liquid separation device (20) further comprises a circulation pipeline (22), a feeding end and a discharging end of the circulation pipeline (22) are both communicated with the inner cavity of the tank body (21), and a second conveying pump (23) is arranged on the circulation pipeline (22).
7. The high-potassium mother liquor recovery device according to claim 6, wherein the circulating pipeline (22) is further provided with a sampling port.
8. The high-potassium mother liquor recovery apparatus according to claim 1, further comprising the dehydration device.
9. The high-potassium mother liquor recovery device according to claim 1, wherein the liquid phase recovery assembly further comprises a third conveying pipeline (70) and an overflow pipeline (90), one end of the overflow pipeline (90) is communicated with the overflow port, the other end of the overflow pipeline (90) is communicated with the liquid inlet end of the second recovery tank (40), one end of the third conveying pipeline (70) is communicated with the liquid outlet end of the second recovery tank (40), and a third conveying pump (80) is arranged on the third conveying pipeline (70).
10. A potassium chloride production system, comprising:
Crystallizer (100)
The high potassium mother liquor recovery apparatus according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202421508276.6U CN222900301U (en) | 2024-06-27 | 2024-06-27 | High potassium mother liquor recovery unit and potassium chloride production system |
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| CN202421508276.6U CN222900301U (en) | 2024-06-27 | 2024-06-27 | High potassium mother liquor recovery unit and potassium chloride production system |
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