KR20170081353A - Continuous stirred-tank reactor with panel - Google Patents
Continuous stirred-tank reactor with panel Download PDFInfo
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- KR20170081353A KR20170081353A KR1020160000286A KR20160000286A KR20170081353A KR 20170081353 A KR20170081353 A KR 20170081353A KR 1020160000286 A KR1020160000286 A KR 1020160000286A KR 20160000286 A KR20160000286 A KR 20160000286A KR 20170081353 A KR20170081353 A KR 20170081353A
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/008—Details of the reactor or of the particulate material; Processes to increase or to retard the rate of reaction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
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- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/58—Reaction vessels connected in series or in parallel
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Abstract
The present invention provides a continuous stirred tank type reactor equipped with a panel.
Specifically, the continuous stirred tank type reactor of the present invention comprises: a reaction tank having an inlet and an outlet for introducing and discharging a raw material to one side, respectively; An agitator provided in the reaction vessel; And a continuous stirred tank reactor (CSTR) having a panel vertically installed on a wall surface of the reaction vessel, the panel being installed to be spaced apart from the stirring device by a predetermined distance.
Through the above structure, the continuous stirred tank type reactor of the present invention increases the residence time of the raw material introduced into the reaction tank during agitation, and significantly reduces the initial flow out amount and initial outflow concentration of the raw material.
Description
The present invention relates to a continuous stirred tank reactor capable of increasing the residence time of a raw material charged into a reaction tank and reducing initial discharge amount and concentration by having a panel.
Various types of reactors are used to uniformly stir raw materials in a large number of industrial synthesis and processing processes. In the process, the reactor is influenced by the concentration, temperature, pressure, time and catalyst of the reactant, so it is important to select the type of reactor most suitable for such process conditions.
As a generally used stirring reactor, there is typically a continuous anomaly reactor. The continuous anomaly reactor can again be divided into two models: a tubular reactor (PFR) and a continuous stirred tank reactor (CSTR).
Tubular reactors are those reactors that have the same flow as the flow of material in the reactor, as well as the shape of the reactor in the form of tubes. That is, the material introduced into the tubular reactor only mixes in the radial direction without axial mixing. At this time, the conditions in the reactor, such as temperature, composition, and flow rate, are constant based on one cross section of the reactor and vary continuously depending on the distance from the inlet.
Continuous Stirred Tank Reactor (CSTR), also called mixed flow reactor (MFR), is completely mixed when the feedstock is introduced into the reactor, resulting in a spatially homogeneous state and the temperature and concentration , The reaction rates are the same, the state of the reactor discharge stream is the same as that in the reactor, and there is no accumulation of material in the reactor as a continuous reactor operating in a steady-state.
Such a continuously stirred tank type reactor is used by continuously operating a stirring tank. The most representative example of the continuous stirred tank type reactor is a system in which the reaction raw materials are continuously supplied and discharged after being sufficiently evenly mixed in a single stirring tank. A liquid circulation pump may be installed to circulate and mix a sufficient amount of liquid through the tank.
Both of the tanks are mixed and stirred sufficiently evenly so that the liquid concentration is the same. Since the reaction proceeds continuously at a constant rate in this state, the reaction can be controlled and the reaction temperature can be easily maintained. .
In addition, instead of using one reaction tank, a method in which a plurality of reaction tanks are arranged in series to sequentially send reaction liquids (a series multistage tank-type reactor) requires a reactor volume necessary for performing a reaction It can be selected in a particularly advantageous manner when the throughput is large.
Indeed, the continuous stirred tank type reactor is used in various industrial fields, for example, for the purpose of producing a metallocene catalyst widely used in the process of producing synthetic materials such as polyethylene (PE) or polypropylene (PP) have.
Such a continuous stirred tank type reactor has advantages such as easy temperature control and the like, but also has a disadvantage of low conversion rate.
1 is a cross-sectional view of a conventional continuously stirred tank type reactor. 1, the continuous
Part of the reaction starting material injected into the
To solve this problem and increase the conversion rate, the size of the reactor must be increased. Considering the economic and spatial limitations in installing the apparatus, there is a limit to increase the size of the reactor. In addition, the development and use of a completely new reactor structure is also inefficient because it would result in a complete reuse of the existing industrial facility.
Therefore, it was necessary to develop new technology that can easily manufacture and install, utilize the maximum amount of conventional industrial facilities, prevent the initial spillage of raw materials to be introduced, and significantly improve the efficiency of stirring efficiency.
In order to solve the above-mentioned conventional problems, the inventors of the present invention have conducted various studies, and by installing a panel on the outlet side inside the reactor, it is possible to induce re-descent and remixing of the initial outflow, And the initial outflow amount of the raw material and the initial outflow concentration can be decreased. Thus, the present invention has been completed.
Accordingly, an object of the present invention is to increase the residence time of a raw material to be fed into a continuous stirred tank type reactor and to reduce an initial runoff amount and an initial runoff concentration of the raw material. Another object of the present invention is to achieve the above-described object without changing the structure of the conventional reactor as much as possible in consideration of practicality and economical efficiency.
In order to achieve the above object,
A reaction tank provided with an inlet and an outlet for supplying and discharging the raw material to one side, respectively;
An agitator provided in the reaction vessel; And
A continuous stirred tank reactor (CSTR) provided with a panel vertically installed on a wall surface of the reaction tank, the panel being installed to be spaced apart from the stirring device by a predetermined distance.
The continuous stirred tank type reactor of the present invention, from the structure shown in the above-mentioned task solution,
The initial runoff of the feedstock is re-lowered and remixed to increase the residence time of the feedstock in the reactor and reduce the initial runoff and initial runoff concentration. Further, as the residence time of the raw material in the reaction vessel increases, the mixing concentration and composition of the input raw materials can be stabilized more quickly.
The continuous stirred tank type reactor of the present invention is economical and practical because it has a remarkably improved effect as described above, and can be manufactured easily and easily in a line which does not change the conventional reactor structure as much as possible.
1 is a cross-sectional view of a conventional continuous stirred tank reactor without a panel.
FIG. 2 is a schematic top view showing the raw material flow in the reactor of FIG. 1; FIG.
3 is a perspective view of a continuous stirred tank type reactor having a panel according to the present invention.
4 is a perspective view of a panel according to an embodiment of the present invention.
FIG. 5 is a graph showing the concentration of the outflow raw material liquid over time in the case of conducting the stirring process from the reactor according to Example 1 of the present invention and Comparative Example. FIG.
FIG. 6 is a graph showing the concentration of the raw material liquid flowing out from the reactor according to Example 1 of the present invention and the comparative example over time (rpm increase) when the stirring process is performed at a high speed.
FIG. 7 is a graph showing the concentration of the outflow raw material liquid over time when the stirring process is carried out from the reactor according to the first and second embodiments of the present invention. FIG.
Hereinafter, the configuration of the present invention will be described in more detail with reference to Figs. 3 and 4. Fig.
3 and 4, only the most representative embodiments are described in order to facilitate understanding of the present invention. Therefore, the scope of the present invention is not limited thereto unless the specific configuration is specifically defined in the present specification And should be understood to cover all ranges equivalent to those described herein.
3 is a structure of an embodiment of a continuous stirred tank type reactor according to the present invention.
Referring to FIG. 3, the continuous stirred
In the continuous stirred
The size and shape of the
An
The
It should be noted that such a substrate is meant to clearly specify that the effect of the present invention is not limited by the arrangement of the
In addition, the length and shape of the
The
A
More specifically, the
The panel is preferably installed between the
The
In the present invention, the shape, size, thickness and width of the
4 is a three-dimensional view showing a
In particular, considering the structure and application examples of the conventional continuous stirred
The width of the
Any material may be used as the material of the
When the
There is no limitation to the method of installing the
In summary, a Continuous Stirred Tank Reactor (CSTR, 100) is a continuous reactor for thoroughly mixing raw materials to be injected into a uniform state in space, , The reaction rate is the same and the state of the exhaust stream of the
When the raw material is supplied to the
At this time, the flow of the raw material flowing into the conventional continuously stirred
In addition, the
Hereinafter, Examples 1 to 2 and Comparative Examples and Experimental Examples 1 to 4 using them are described in order to facilitate understanding of the present invention. However, the following examples and experiments are only examples of the constitution and effect of the present invention, and the scope and effect of the present invention are not limited thereto.
< Example >
Example One
One embodiment of the continuous stirred
Example 2
The continuous stirred
< Comparative Example >
This comparative example is a conventional continuous stirred
< Experimental Example >
Experimental Example 1 - Difference in effect according to presence or absence of panel
In Experimental Example 1, experiments were conducted to confirm the initial runoff velocity and the concentration of the outflow materials when the raw materials were stirred using the continuous stirred tank type reactors of Example 1 and Comparative Example, respectively.
First, in order to carry out the experiment, the continuous stirring tank type reactor was stabilized, and the raw materials of certain components were put into the reactor through the inlet for 1 minute and stirred.
Subsequently, samples of the substances flowing into the outflow port were divided by time zone and UV analysis was performed. However, the use of the UV detector is intended only to easily check the tendency of the raw materials in the reactor, and the raw materials are not necessarily limited to specific components.
The results of each experiment obtained through the above UV analysis were quantified and converted into a graph of concentration distribution change over time as shown in FIG. 5 (a) corresponds to the results of the first and (b) comparative examples.
5 (a) and 5 (b), when the reactor of Example 1 is used, the slope of the overall graph is gentler than that of the comparative example.
Specifically, the initial concentration increase rate is slow, and the time taken to show the peak concentration of the outgoing raw material is also about 4 minutes, which is about 2 minutes slower than the comparative example. This is because the raw material to be discharged is recycled before being discharged by the panel structure. From the above results, it can be seen that when the reactor according to the embodiment is used, the time during which the raw materials to be supplied stay in the reactor is increased and the stirring efficiency is increased have.
In addition, the concentration peak of Example 1 exhibited a significantly lower value than that of the Comparative Example, and the gradient of the concentration decreasing from the concentration maximum was also gentler than that of the Comparative Example. From this, in Example 1, It can be confirmed that rapid concentration stabilization can be attained as it stays in the reactor for a long time.
For a more accurate comparative analysis, the standard deviation up to the maximum concentration point and the residence time in the reactor for the graphs of Example 1 and Comparative Example are mathematically calculated as shown in Table 1 below.
As shown in the graph of FIG. 5, the residence time in the reactor is higher when the reactor of Example 1 is used, and the standard deviation before and after the maximum value is smaller in Example 1 .
According to the results of the present experimental example, it is possible to effectively prevent the outflow of the initial raw material from the reactor only by the provision of the panel in the reaction tank, thereby making it easy to control the concentration of the raw material in the reaction tank and to significantly improve the overall stirring efficiency .
Experimental Example 2 - Difference of effect according to panel length difference
In the above-described Experimental Example 1, it was confirmed that the stirring efficiency and performance were improved when the panel was provided in the reactor.
On the other hand, in
For the experiment, the reactors of Examples 1 and 2 were used, in which the lengths of the panels were different from each other. The experimental method is the same as that of Experimental Example 1 described above, and each experiment result obtained through UV analysis is converted into a graph of concentration distribution change over time as shown in FIG. 6 (a) is a result of using the reactor of Example 1, and (b) is a result of using the reactor of Example 2. Fig.
Referring to FIG. 6, in the case of using the reactor (b) of
Since the continuously stirred tank type reactor of the present invention has remarkably improved stirring efficiency, it can be usefully used in various industrial fields requiring stirring products such as the production of metallocene catalysts.
100: continuous stirred tank type reactor of the present invention
110: Reactor
111: stirring device
112: Panel
120: inlet
130: Outlet
200: Conventional continuous stirring tank type reactor
210: Reactor
211: stirring device
220: inlet
230: Outlet
Claims (7)
An agitator provided in the reaction vessel; And
A continuous stirred tank reactor (CSTR) provided in a vertical direction on a wall surface of the reaction tank, and having a panel installed at a predetermined distance from the stirring device.
Wherein the inlet and the outlet are located at an upper portion of the reaction tank.
Wherein the installation position of the panel is arranged to be horizontal with the inlet and the outlet.
Wherein the panel is installed at a height of 1/10 to 9/10 of the length of the reactor from the raw material interface in the reactor, and the total length is 1/4 to 3/4 of the length of the reactor.
Wherein the panel is disposed between an outlet and an agitating device.
Wherein the width of the panel is less than the diameter of the reaction vessel outside the width of the outlet.
Wherein the thickness of the panel is 0.1 to 1 cm.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2019004553A1 (en) | 2017-06-27 | 2019-01-03 | 주식회사 엘지화학 | Battery module |
Citations (5)
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KR920014767A (en) * | 1991-01-23 | 1992-08-25 | 알베르토 부라이 | Multistep Method for Liquid Ammonoximation of Carbonyl Compounds |
JP2002537868A (en) * | 1999-03-11 | 2002-11-12 | コブラ・セラピューティクス・リミテッド | Container for mixing cell lysate |
JP2002336878A (en) * | 2001-05-15 | 2002-11-26 | Toyobo Co Ltd | Continuous water treating device and method |
KR100392946B1 (en) * | 1995-03-01 | 2004-01-07 | 이.아이,듀우판드네모아앤드캄파니 | PROCESS FOR THE PREPARATION OF ε-CAPROLACTAM |
KR20070006864A (en) | 2004-04-27 | 2007-01-11 | 백스터 인터내셔널 인코포레이티드 | Stirred-tank reactor system |
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2016
- 2016-01-04 KR KR1020160000286A patent/KR102024894B1/en active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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KR920014767A (en) * | 1991-01-23 | 1992-08-25 | 알베르토 부라이 | Multistep Method for Liquid Ammonoximation of Carbonyl Compounds |
KR100392946B1 (en) * | 1995-03-01 | 2004-01-07 | 이.아이,듀우판드네모아앤드캄파니 | PROCESS FOR THE PREPARATION OF ε-CAPROLACTAM |
JP2002537868A (en) * | 1999-03-11 | 2002-11-12 | コブラ・セラピューティクス・リミテッド | Container for mixing cell lysate |
JP2002336878A (en) * | 2001-05-15 | 2002-11-26 | Toyobo Co Ltd | Continuous water treating device and method |
KR20070006864A (en) | 2004-04-27 | 2007-01-11 | 백스터 인터내셔널 인코포레이티드 | Stirred-tank reactor system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2019004553A1 (en) | 2017-06-27 | 2019-01-03 | 주식회사 엘지화학 | Battery module |
DE202018006878U1 (en) | 2017-06-27 | 2024-01-09 | Lg Energy Solution, Ltd. | Battery module |
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