CN107570099B - Tank pressure control device of parallel reactor - Google Patents
Tank pressure control device of parallel reactor Download PDFInfo
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Abstract
The invention discloses a tank pressure control device of parallel reactors, which comprises a plurality of reactor tank air inlet pipelines and air outlet pipelines, wherein each reactor tank is provided with the air inlet pipeline and the air outlet pipeline; the exhaust pipelines of all the reactor tanks are communicated with the buffer bottles; the pressure detection mechanism is used for measuring a real-time pressure value in the buffer bottle; and the exhaust regulating valve is communicated with the buffer bottle. The tank pressure control device of the parallel reactor further comprises a manual bypass valve and a safety relief valve, wherein the manual bypass valve is arranged in parallel with the discharge regulating valve. The reactor tank is communicated with the buffer bottle, and is further matched with the pressure detection mechanism and the exhaust regulating valve for adjustment. Because the exhaust of each reactor tank is summarized for buffering, the fluctuation range of the gas pressure is reduced, the centralized detection is facilitated, the control sensitivity is improved, and the overall control precision is improved. The consistency of variation between the individual reactor tanks is ensured. So that the tank pressures of the tanks are balanced and consistent with each other.
Description
Technical Field
The invention relates to the technical field of microorganism culture, in particular to a tank pressure control device of a parallel reactor.
Background
In the microbial culture solution, the dissolved oxygen concentration is an important index reflecting the metabolic characteristics of the microbial culture process, and is the result of the mutual balance between the oxygen supply condition and the oxygen consumption condition. Wherein the oxygen supply conditions are mainly dependent on the equipment itself, including aeration, agitation and tank pressure. The tank pressure is also an important influencing factor for other gas solubilities, and has a direct influence on the gas solubility, further on the dissolved oxygen concentration and further on the metabolic process. For the parallel reactor system, if the concentration of the dissolved oxygen is changed in the culture process, so as to study the metabolic change difference among different tanks, the stability and mutual consistency of the tank pressures of each tank are required to be maintained as much as possible, so that the influence on the concentration of the dissolved oxygen is reduced, the experimental result can truly reflect the change of the metabolic process, and the reliability of the experimental result is improved.
Due to the characteristics of microorganisms, the culture process is not completely repeated, both under the influence of external environmental conditions and under the influence of inherent genetic characteristics. Therefore, in the optimization process of the culture process, a parallel culture method is adopted, and by eliminating systematic deviation, a research result with higher comparability and reliability can be obtained. The tank pressure control of the parallel reactor now has the following problems:
first, each reactor tank in parallel reactors is generally small in volume, and it is difficult to stably control the tank pressure. If the miniature pressure regulating device is adopted for improving the precision, the miniature pressure regulating device is stable and reliable, but the channel of the miniature pressure regulating device is blocked due to the fact that a small amount of culture medium liquid is more or less discharged along with the exhaust gas in the culture process, and then the pressure control can be disabled.
Secondly, in the existing equipment, the tank pressure of each reactor tank is generally controlled independently, and the tank pressure is regulated and controlled by detecting the tank pressure, feeding back and regulating the exhaust gas amount and balancing the intake air. Such control means generally generate a certain deviation of the reactors from each other, i.e. a systematic error, which is generated as a result of: differences in detection accuracy of each tank sensor; the difference of signal transmission precision of each tank transmitter; differences in the control results of the reactors; the fluctuation time of the tank pressure control result is not synchronous by each reactor; when gas is led out of each reactor to be detected before the exhaust regulating valve, the led-out flow of the gas leads to interference on the limited exhaust quantity of the reactor and influences the control stability of the tank pressure, and the interference causes circulation interference along with the circulation sampling of each reactor.
Disclosure of Invention
The invention aims to provide a tank pressure control device of a parallel reactor, which can realize tank pressure balance among various reaction tanks.
The technical scheme provided by the invention is as follows: a tank pressure control device for parallel reactors, comprising:
the buffer bottle is provided with an air inlet pipeline and an air outlet pipeline, the air outlet pipelines of all the reactor tanks are communicated to the buffer bottle, a main air outlet pipeline is further arranged on the buffer bottle, and an air outlet regulating valve is arranged on the main air outlet pipeline; the method comprises the steps of,
and the pressure detection mechanism is used for measuring the real-time pressure value in the buffer bottle.
The exhaust pipelines of the reactor tanks are communicated with the buffer bottle, a main exhaust pipeline is additionally led out of the buffer bottle, an exhaust regulating valve is arranged on the buffer bottle, and the pressure detection mechanism is matched with the exhaust regulating valve on the main exhaust pipeline to regulate the exhaust flow. Because the exhaust of each reactor tank is summarized for buffering, the fluctuation range of the gas pressure is reduced, the detection is facilitated, the control sensitivity is improved, and the overall control precision is improved. Meanwhile, the problem that fluctuation time is asynchronous in the process of independently controlling the tank pressure is solved, and the circulation interference on measurement and control of the tank pressure is caused by circulation sampling of exhaust gas by each reactor tank. Even if the fluctuation is slight, the consistency of the changes among the tanks can be ensured because the tanks synchronously fluctuate.
The exhaust pipelines of the reactor tanks are gathered and enter the buffer container, and the flow resistance of the gas in the pipelines and the pressure of the condensed liquid column are ignored enough only by the pipelines being thick enough and keeping a certain condensation gradient, so that the tank pressures of the tanks are balanced and consistent with each other. And the gas enters the buffer bottle through each exhaust pipeline, wherein liquid drops entrained and condensed can stay in the buffer bottle due to the reduction of the flow rate, so that the operation of the exhaust regulating valve in the subsequent passage can be ensured not to be influenced.
The control of the tank pressure of a plurality of reactors is completed through one device and one group of control and detection devices, so that the device cost is saved, the measurement and control points are greatly reduced, the failure rate is reduced, and the maintenance cost is reduced.
Preferably, the buffer bottle is further provided with an auxiliary exhaust pipeline; and a manual bypass valve is arranged on the auxiliary exhaust pipe. So as to be manually adjusted by the manual bypass valve in the event of failure of the automatic control or insufficient flow.
Preferably, the buffer bottle is further provided with a pressure relief pipeline, and the pressure relief pipeline is provided with a safety pressure relief valve. So as to avoid the excessive tank pressure of the tank pressure control device of the parallel reactor.
Preferably, the tank pressure control device of the parallel reactor further comprises a drain pipeline, wherein the drain pipeline is led out of the buffer bottle from the bottom of the buffer bottle, and a drain valve is arranged on the drain pipeline. For timely discharging condensate, etc.
Specifically, an air inlet pipeline on each reactor tank is provided with an air inlet flowmeter and a one-way valve. To prevent the back-channeling of the gas.
Specifically, the pressure detection mechanism is a mechanical pressure gauge or a pressure sensor.
Specifically, the exhaust gas regulating valve may be a mechanical back pressure valve.
Specifically, the manual bypass valve is a mechanical back pressure valve.
The tank pressure control device of the parallel reactor provided by the invention can bring at least one of the following beneficial effects:
1. the reactor tank is communicated with the buffer bottle, and is further matched with the pressure detection mechanism and the exhaust regulating valve for adjustment. The exhaust of each reactor tank is collected for buffering, so that the fluctuation range of the gas pressure is reduced, and meanwhile, centralized detection is adopted, so that the control sensitivity is relatively improved, and the overall control precision is improved.
2. The problem that fluctuation time is not synchronous in the process of independently carrying out tank pressure control is solved, and the cyclic interference on the tank pressure control is caused by cyclic sampling of exhaust of each reactor tank when tail gas detection is needed. Even if the tank pressure slightly fluctuates, the tanks synchronously fluctuate, namely, the tank pressure is controlled in parallel, so that the consistency of the change among the reactor tanks can be ensured.
3. The exhaust pipelines of the reactor tanks are gathered and enter the buffer container, and the flow resistance of the gas in the pipelines and the pressure of the condensed liquid column are ignored enough only by the pipelines being thick enough and keeping a certain condensation gradient, so that the tank pressures of the tanks are balanced and consistent with each other.
4. The gas enters the buffer bottle through each exhaust pipeline, wherein entrained and condensed liquid drops can stay in the buffer bottle due to the reduction of the flow rate, so that the operation of the exhaust regulating valve in the subsequent passage can be ensured not to be influenced.
5. The control of the tank pressure of a plurality of reactors is completed through one tank body and a group of control and detection devices, so that the device cost is saved, the number of measurement and control points is greatly reduced, the failure rate is reduced, and the maintenance cost is reduced.
Drawings
The above-mentioned characteristics, technical features, advantages and implementation modes of the tank pressure control device of the parallel reactor will be further described in a clear and understandable manner by describing preferred embodiments with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a tank pressure control apparatus of a parallel reactor according to the present invention.
Reference numerals illustrate: 100. the device comprises a reactor tank 200, an air inlet pipeline 210, a mass flowmeter 220, a rotor flowmeter 230, a one-way valve 300, a stirring motor 310, a stirring paddle 320, a rotation speed detection device 400, an air outlet pipeline 500, a buffer bottle 510, an automatic control air outlet regulating valve 511, a pressure sensor 512, a main air outlet pipeline 520, a mechanical back pressure valve 530, a manual bypass valve 540, a safety relief valve 550 and a sewage pipeline.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will explain the specific embodiments of the present invention with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the invention, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.
For simplicity of the drawing, only the parts relevant to the present invention are schematically shown in each drawing, and they do not represent the actual structure thereof as a product.
Example 1
As shown in fig. 1, the present embodiment discloses a tank pressure control apparatus of a parallel reactor, which includes an intake pipe 200 and an exhaust pipe 400 communicating with a reactor tank 100, a buffer bottle 500, a pressure detecting mechanism, and an exhaust regulating valve.
The reactor tanks 100 are provided with an air inlet pipeline 200 and an air outlet pipeline 400 for air inlet and air outlet, each reactor tank 100 is provided with at least one group of air inlet and air outlet pipelines, wherein all the air outlet pipelines 400 are communicated to the buffer bottle 500, the pressure detection mechanism detects the pressure in the buffer bottle 500, a main air outlet pipeline 512 is additionally led out of the buffer bottle 500, and an air outlet regulating valve is arranged on the main air outlet pipeline 512 so as to regulate the pressure in all the reactor tanks 100 through the buffer bottle 500. The action of the exhaust gas regulating valve is controlled by the manual operation of a person or the action of a control mechanism, namely, a self-control exhaust gas regulating valve 510 or a mechanical back pressure valve 520 and the like are selected and used as shown in the figure. Illustratively, the pressure detection mechanism may be a mechanical pressure gauge or a pressure sensor 511.
Control components such as a control system and corresponding software of the tank pressure control device can be integrated in a control cabinet of the parallel reactor or in the tank pressure control device.
Example two
As shown in fig. 1, after the self-controlled exhaust gas regulating valve 510 or the mechanical back pressure valve 520 is selected, one or more of the following valve structures may be added on the basis of the first embodiment.
(1) A secondary exhaust pipeline is led out of the buffer bottle 500, and a manual bypass valve 530 is arranged on the secondary exhaust pipeline, so that when the exhaust flow is insufficient or the control of the automatic exhaust regulating valve 510 or 520 fails, the secondary exhaust pipeline can be manually regulated through the manual bypass valve 530. The manual bypass valve may also take the form of a mechanical back pressure valve or the like.
(2) The buffer bottle 500 is further led with a pressure relief pipeline, and a safety pressure relief valve 540 is arranged thereon. This avoids the risk of the tank pressure of the parallel reactor being too high.
Example III
As shown in fig. 1, on the basis of the first or second embodiment, the tank pressure control device of the parallel reactor further comprises a drain line 550, the drain line 550 is led out from the bottom of the buffer bottle 500 and is communicated with the buffer bottle 500, and a drain valve is arranged on the drain line 550. When liquid and exhaust condensate entrained with each exhaust pipeline accumulate to a certain depth, a drain valve can be started to drain the liquid through the sewage pipeline.
The intake pipe 200 is provided with an intake flow meter and a check valve 230. Among these are an intake flowmeter, which may be selected from the group consisting of mass flowmeter 210 and/or rotameter 220. The check valve 230 is designed to avoid reverse channeling of the gas.
It should be noted that the above embodiments can be freely combined as needed. The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (8)
1. A tank pressure control device of parallel reactor for regulate and control the tank pressure of each reactor tank of parallel reactor, its characterized in that, the reactor tank is equipped with inlet air pipeline and exhaust pipe way, includes:
the buffer bottles are communicated with the exhaust pipelines of all the reactor tanks, a main exhaust pipeline is additionally arranged on each buffer bottle, and an exhaust regulating valve is arranged on each main exhaust pipeline; the method comprises the steps of,
the pressure detection mechanism is used for measuring a real-time pressure value in the buffer bottle;
and the control mechanism controls the action of the exhaust regulating valve according to the measurement result of the pressure detection mechanism.
2. The tank pressure control device for parallel reactors according to claim 1, wherein:
an auxiliary exhaust pipeline is further arranged on the buffer bottle; and a manual bypass valve is arranged on the auxiliary exhaust pipe.
3. The tank pressure control device for parallel reactors according to claim 1, wherein:
the buffer bottle is further provided with a pressure relief pipeline, and the pressure relief pipeline is provided with a safety pressure relief valve.
4. The tank pressure control device for parallel reactors according to claim 1, wherein:
the buffer bottle is characterized by further comprising a drain pipeline, wherein the drain pipeline is led out of the buffer bottle from the bottom of the buffer bottle, and a drain valve is arranged on the drain pipeline.
5. The tank pressure control device for parallel reactors according to any one of claims 1 to 4, wherein:
the air inlet pipeline on each reactor tank is provided with an air inlet flowmeter and a one-way valve.
6. The tank pressure control device for parallel reactors according to claim 1, wherein:
the pressure detection mechanism is a mechanical pressure gauge or a pressure sensor.
7. The tank pressure control device for parallel reactors according to claim 5, wherein:
the exhaust regulating valve is a mechanical back pressure valve.
8. The tank pressure control device of a parallel reactor according to claim 2, wherein:
the manual bypass valve is a mechanical back pressure valve.
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| CN201710898091.9A CN107570099B (en) | 2017-09-28 | 2017-09-28 | Tank pressure control device of parallel reactor |
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| CN110538620B (en) * | 2018-11-14 | 2021-10-15 | 北京北方华创微电子装备有限公司 | Pressure control system and pressure control method of reaction chamber |
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