Continuous washing layering system and layering method
阅读说明：本技术 一种连续洗涤分层系统及分层方法 (Continuous washing layering system and layering method ) 是由 刘一鸣 李振宇 于 2020-06-24 设计创作，主要内容包括：本发明公开了一种连续洗涤分层系统及分层方法,所述分层系统包括分层储罐、中间层储罐、在线混合器、重相出料管道、轻相出料管道、中间层出料管道、中间层清液回用管道。本发明的连续洗涤分层系统,针对含有中间乳化相的洗涤后物料的分层,能较好的实现重相和轻相的分离；将串料集中在中间层,保证工艺系统稳定；中间层除杂后的回收利用,保证物料的高效利用；保证误操作时轻相也不会从重相出料口排出,保证工艺系统的安全；还可实现连续化操作、降低工作负荷和减少操作失误,提高分层操作的操作安全和产品质量。(The invention discloses a continuous washing layering system and a layering method. The continuous washing layering system can better realize the separation of the heavy phase and the light phase aiming at the layering of washed materials containing the intermediate emulsified phase; the material string is concentrated in the middle layer, so that the stability of a process system is ensured; the intermediate layer is recycled after impurity removal, so that the high-efficiency utilization of materials is ensured; the light phase can not be discharged from the heavy phase discharge hole during misoperation, and the safety of a process system is ensured; and the continuous operation can be realized, the workload is reduced, the operation errors are reduced, and the operation safety and the product quality of the layered operation are improved.)
1. A continuous washing layering system is characterized by comprising a layering storage tank, a middle layer storage tank, an online mixer, a heavy phase discharge pipeline, a light phase discharge pipeline, a middle layer discharge pipeline and a middle layer clear liquid recycling pipeline;
the top of the layered storage tank is connected with the online mixer through a mixed liquid pipeline, the upper part of the layered storage tank is connected with the light phase discharging pipeline, the middle part of the layered storage tank is connected with the top of the intermediate layer storage tank through an intermediate layer discharging pipeline, and the bottom of the layered storage tank is connected with the heavy phase discharging pipeline;
the bottom of the middle layer storage tank is connected with the online mixer through a middle layer clear liquid recycling pipeline, and a centrifugal pump, a filter and a third instrument sensor are sequentially connected to the middle layer clear liquid recycling pipeline from a position close to the middle layer storage tank;
the online mixer is also connected with a washed liquid pipeline and a washed liquid pipeline.
2. The continuous washing and layering system of claim 1, wherein a first gate valve is disposed on the light phase discharge pipeline, a second gate valve is disposed on the intermediate layer discharge pipeline, a third gate valve and a fourth gate valve are sequentially disposed on the heavy phase discharge pipeline, and a fifth gate valve is disposed on the intermediate layer clear liquid recycling pipeline between the filter and the third meter sensor.
3. The continuous scrubbing and demixing system of claim 1, wherein a vapor equalization conduit is connected between the top of the demixing tank and the top of the intermediate storage tank, and wherein an exhaust conduit is also connected to the top of the demixing tank.
4. The continuous washing and layering system of claim 1, wherein a heavy phase discharge pipeline between the third gate valve and the fourth gate valve is connected with a cleaning pipeline, and the other end of the cleaning pipeline is connected with the middle layer clear liquid recycling pipeline between the middle layer storage tank and the centrifugal pump.
5. The continuous washing stratification system of claim 4, wherein said purge line is provided with a sixth gate valve.
6. The continuous washing and layering system of claim 1, wherein a liquid level tuning fork switch is disposed at the top of the layering storage tank, a first meter sensor is disposed at the light phase discharge pipeline at the upper portion, and a second meter sensor is disposed at the middle layer discharge pipeline.
7. The continuous washing and layering system of claim 1, wherein a blowdown line is connected to the intermediate layer clear liquid recycling line between the filter and the fifth gate valve, and a seventh gate valve is arranged on the blowdown line.
8. The continuous washing stratification system of claim 1, wherein a trailing end of said heavy phase discharge conduit is provided with a U-bend.
9. The continuous scrubbing stratification system of claim 1, wherein said meter sensor is a conductivity sensor or a density sensor.
10. A layering process using a continuous washing layering system according to any one of claims 1-9, wherein the layering process is used to separate washed materials containing an emulsified phase, comprising the steps of:
(1) a feeding process: adding the washed raw material and the washing raw material into an online mixer together, and mixing and then entering a layered storage tank;
(2) a layering procedure: the mixed solution is divided into a heavy phase layer, a middle layer and a light phase layer in a layered storage tank;
(3) a discharging procedure: when the liquid level of the layered storage tank meets the process requirement, the liquid level tuning fork switch sends a signal, the first gate valve, the second gate valve, the third gate valve and the fourth gate valve are opened, and continuous discharging is started;
(4) an intermediate layer recycling procedure: opening a fifth gate valve, conveying the middle layer liquid to a filter by a centrifugal pump, removing impurities in the middle layer, and then entering an online mixer through a middle layer clear liquid recycling pipeline to be mixed with the washing liquid and the washed liquid for reuse;
the layered guarantee of the discharging process is realized by controlling a first gate valve by a first instrument sensor and controlling a fourth gate valve by a second instrument sensor; and the quality assurance of the middle layer recycling process is realized by controlling a seventh gate valve by a third instrument sensor.
11. The layering method according to claim 10, wherein in the step (3), the light phase layer is discharged through a light phase discharging pipeline inserted into the upper part of the layering storage tank, the inserted length of the light phase discharging pipeline is determined according to the material characteristics, and a pipe orifice needs to be positioned in a clear liquid area of the light phase layer; the middle layer is discharged through a middle layer discharging pipeline inserted into the middle of the layered storage tank, and a pipe orifice of the middle layer discharging pipeline is arranged between upper and lower emulsification phase interfaces of the middle phase.
12. The layering method according to claim 10, wherein heavy phase discharging safety of the layering method is realized by a U-shaped bend, and the upturning height H of the U-shaped bend2The following formula should be satisfied:
ρ1×H1≤ρ2×H2
where ρ is1Is the density of the light phase; h1The liquid level height of the layered storage tank is shown; rho2Is the density of the heavy phase.
13. The method of claim 10, further comprising an in-line cleaning process: after the layering operation is finished, washing raw material liquid enters a layering storage tank through an online mixer, a first gate valve, a second gate valve, a fourth gate valve and a seventh gate valve are closed, a third gate valve, a fifth gate valve and a sixth gate valve are opened, cleaning liquid is pressurized and circulated by a centrifugal pump through a cleaning pipeline, returns to the layering storage tank through a filter, an intermediate layer clear liquid recycling pipeline, the online mixer and a mixed liquid pipeline respectively, and is discharged through a sewage discharge pipeline after the processes of circulating for a plurality of times are carried out, the sixth gate valve is closed, and the seventh gate valve is opened.
Technical Field
The invention relates to the field of continuous washing layering, in particular to a continuous washing layering system and a layering method.
Background
In recent years, with the improvement of the living standard of people, new demands are made on the working environment and how to reduce the working intensity. The washing layering operation in the field of pharmaceutical chemical industry is mostly intermittent production at present, and working strength is high. Particularly, when the materials to be washed contain impurities, the materials to be washed and the materials to be washed can not be clearly layered to form an emulsified phase, and the emulsified phase is treated because of more impurities and unclear layered interface, so that the working environment is poor, and the physical and mental health of workers is greatly influenced. In the washing layering process, the tightness, automation and accuracy of all operation processes of feeding, mixing, layering and discharging must be achieved, meanwhile, the problem that when misoperation occurs, the light-phase washing liquid cannot be discharged from the heavy-phase discharging pipe to cause downstream process faults is solved, the layering operation efficiency is improved, meanwhile, the requirements of the process and safety production are met, the labor intensity of workers is reduced, and the operation environment of the workers is improved. However, in the pharmaceutical chemical industry, continuous layering with an emulsified intermediate phase has not been solved well.
Traditional layering mode to containing intermediate level emulsification phase is mostly intermittent type operation, at first adds the washing liquid in the layering cauldron and by the washing liquid, and the two stirs in the cauldron and mixes fully, and at static a period, wait for mixed liquid to stew the layering again and carry out layering ejection of compact work again. The whole discharging process is very complicated in procedure, workers need to observe the layering interface all the time so as to switch discharging, and due to the existence of the intermediate emulsion phase, the end point of layering operation is difficult to judge, and the situations of material mixing and incomplete layering are easy to occur when the workers open and close the valve. Therefore, a continuous layering system appears necessary and important. Patent CN208493338U discloses a continuous washing and layering device, which can solve the problem of layering continuous operation, but cannot solve the problem of layering operation without obvious phase interface, cannot layer materials which can generate intermediate emulsified phase, and does not consider the safety measure for preventing light phase from being discharged from heavy phase discharge port when in misoperation.
Therefore, designing a method for layering washed materials containing an intermediate emulsion phase, realizing continuous operation, efficiently utilizing raw materials, reducing workload and reducing operation errors is a problem which needs to be solved by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide a continuous washing layering system and a layering method aiming at the problems in the prior art, and aims at layering washed materials containing a middle emulsion phase, realizing continuous operation, efficiently utilizing raw materials, reducing workload and reducing misoperation.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a continuous washing layering system, which comprises a layering storage tank, a middle layer storage tank, an online mixer, a heavy phase discharging pipeline, a light phase discharging pipeline, a middle layer discharging pipeline and a middle layer clear liquid recycling pipeline;
the top of the layered storage tank is connected with the online mixer through a mixed liquid pipeline, the upper part of the layered storage tank is connected with the light phase discharging pipeline, the middle part of the layered storage tank is connected with the top of the intermediate layer storage tank through an intermediate layer discharging pipeline, and the bottom of the layered storage tank is connected with the heavy phase discharging pipeline;
the bottom of the middle layer storage tank is connected with the online mixer through a middle layer clear liquid recycling pipeline, and a centrifugal pump, a filter and a third instrument sensor are sequentially connected to the middle layer clear liquid recycling pipeline from a position close to the middle layer storage tank;
the online mixer is also connected with a washed liquid pipeline and a washed liquid pipeline.
Further, be equipped with first gate valve on the light looks ejection of compact pipeline, be equipped with the second gate valve on the intermediate level ejection of compact pipeline, be equipped with third gate valve and fourth gate valve on the heavy looks ejection of compact pipeline in proper order be equipped with the fifth gate valve between filter and the third instrument sensor intermediate level clear liquid retrieval and utilization pipeline.
Further, a gas phase balance pipeline is connected between the top of the layered storage tank and the top of the middle layer storage tank, and the top of the layered storage tank is also connected with an exhaust pipeline.
Furthermore, a heavy phase discharging pipeline between the third gate valve and the fourth gate valve is connected with a cleaning pipeline, and the other end of the cleaning pipeline is connected with an intermediate layer clear liquid recycling pipeline between the intermediate layer storage tank and the centrifugal pump.
Further preferably, a sixth gate valve is arranged on the cleaning pipeline.
Furthermore, a liquid level tuning fork switch is arranged at the top of the layered storage tank, a first instrument sensor is arranged at the light phase discharging pipeline at the upper part, and a second instrument sensor is arranged at the middle layer discharging pipeline.
Furthermore, a sewage discharge pipeline is connected to the middle-layer clear liquid recycling pipeline between the filter and the fifth gate valve, and a seventh gate valve is arranged on the sewage discharge pipeline.
Furthermore, the tail end of the heavy phase discharging pipeline is provided with a U-shaped bend.
Further, the meter sensor is a conductivity sensor or a density sensor.
In a second aspect of the invention, there is provided a continuous wash layering process for separating a washed material comprising an emulsified phase, comprising the steps of:
(1) a feeding process: adding the washed raw material and the washing raw material into an online mixer together, and mixing and then entering a layered storage tank;
(2) a layering procedure: the mixed solution is divided into a heavy phase layer, a middle layer and a light phase layer in a layered storage tank;
(3) a discharging procedure: when the liquid level of the layered storage tank meets the process requirement, the liquid level tuning fork switch sends a signal, the first gate valve, the second gate valve, the third gate valve and the fourth gate valve are opened, and continuous discharging is started;
(4) an intermediate layer recycling procedure: opening a fifth gate valve, conveying the middle layer liquid to a filter by a centrifugal pump, removing impurities in the middle layer, and then entering an online mixer through a middle layer clear liquid recycling pipeline to be mixed with the washing liquid and the washed liquid for reuse;
the layered guarantee of the discharging process is realized by controlling a first gate valve by a first instrument sensor and controlling a fourth gate valve by a second instrument sensor; and the quality assurance of the middle layer recycling process is realized by controlling a seventh gate valve by a third instrument sensor.
Further, in the step (3), the light phase layer is discharged through a light phase discharging pipeline inserted into the upper part of the layered storage tank, the inserting length of the light phase discharging pipeline is determined according to the material characteristics, and a pipe orifice needs to be located in a clear liquid area of the light phase layer; the middle layer is discharged through a middle layer discharging pipeline inserted into the middle of the layered storage tank, and a pipe orifice of the middle layer discharging pipeline is arranged between upper and lower emulsification phase interfaces of the middle phase.
Further, the system safety of the layering method is realized by a U-shaped bend, and the upturning height H of the U-shaped bend2The following formula should be satisfied:
ρ1×H1≤ρ2×H2
where ρ is1Is the density of the light phase; h1The liquid level height of the layered storage tank is shown; rho2Is the density of the heavy phase.
Further, the layering method further comprises an online cleaning procedure: after the layering operation is finished, washing raw material liquid enters a layering storage tank through an online mixer, a first gate valve, a second gate valve, a fourth gate valve and a seventh gate valve are closed, a third gate valve, a fifth gate valve and a sixth gate valve are opened, cleaning liquid is pressurized and circulated by a centrifugal pump through a cleaning pipeline, returns to the layering storage tank through a filter, an intermediate layer clear liquid recycling pipeline, the online mixer and a mixed liquid pipeline respectively, and is discharged through a sewage discharge pipeline after the processes of circulating for a plurality of times are carried out, the sixth gate valve is closed, and the seventh gate valve is opened.
Compared with the prior art, the invention has the following advantages:
the continuous washing layering system can better realize the separation of the heavy phase and the light phase aiming at the layering of washed materials containing the intermediate emulsified phase; the material string is concentrated in the middle layer, so that the stability of a process system is ensured; the intermediate layer is recycled after impurity removal, so that the high-efficiency utilization of materials is ensured; the light phase can not be discharged from the heavy phase discharge hole during misoperation, and the safety of a process system is ensured; and the continuous operation can be realized, the workload is reduced, the operation errors are reduced, and the operation safety and the product quality of the layered operation are improved.
Drawings
FIG. 1 is a schematic of a continuous washing stratification system of the present invention;
wherein the reference numerals are:
a pipeline 1 for washed liquid; a washing
Detailed Description
The present invention will be described in detail and specifically with reference to the following examples to facilitate better understanding of the present invention, but the following examples do not limit the scope of the present invention.
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