CN210206808U - Nitrogen deep cooling system for reaction kettle liquid - Google Patents
Nitrogen deep cooling system for reaction kettle liquid Download PDFInfo
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- CN210206808U CN210206808U CN201921996325.4U CN201921996325U CN210206808U CN 210206808 U CN210206808 U CN 210206808U CN 201921996325 U CN201921996325 U CN 201921996325U CN 210206808 U CN210206808 U CN 210206808U
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Abstract
The utility model relates to a reation kettle's technical field especially relates to a reation kettle liquid nitrogen cryrogenic system. The input pipeline of the reactor jacket outlet connection of the reactor liquid nitrogen cryogenic system is connected to the inlet of the reactor jacket through the cryogenic heat exchanger, a three-way diverter valve is arranged at one end of the reactor jacket outlet connection on the input pipeline, connected to one end of the cryogenic heat exchanger, the reactor jacket outlet input pipeline is divided into two ways through the three-way diverter valve, one way of pipeline is connected to the inlet of the reactor jacket, the other way of pipeline is connected to the cryogenic heat exchanger, the output pipeline of the cryogenic heat exchanger and the pipeline of the reactor jacket outlet input pipeline, connected to the inlet of the reactor jacket through the three-way diverter valve, are converged and then connected to the inlet of the reactor jacket. The reaction kettle liquid nitrogen deep cooling system is simple in structure, and a three-way shunt valve is added in a pipeline to form a shunt mode, so that the cooling speed of a heat-conducting medium can be accurately controlled, and the constant temperature control can be realized after the temperature required by the reaction is reached.
Description
Technical Field
The utility model relates to a heat transfer device especially relates to a reation kettle liquid nitrogen cryrogenic system.
Background
The cryogenic system is applied to the process operating conditions below-20 ℃; in the pharmaceutical technology, a refrigerant (liquid nitrogen or Freon and the like) is used for cooling a secondary refrigerant (ethanol or ethylene glycol and the like) to a low-temperature state of-15 ℃ to-60 ℃ so that feed liquid is subjected to chemical reaction in the low-temperature state, a shell-and-tube heat exchanger is widely applied to the technology as a universal device, along with the progress of the technological level, the development of heat exchange equipment is improved to different degrees, how to ensure the safe and reliable operation of the heat exchanger and how to save energy sources are important for the research and development of each heat exchanger. The cold source of the cryogenic system is liquid nitrogen, and the air contains 78% of nitrogen, so the liquid nitrogen is very convenient to prepare, and is an inexhaustible environment-friendly energy source, in addition, the liquid nitrogen is adopted for refrigeration, and a compressor and a water cooler are not used any more, so the noise is low, the operation is reliable, the maintenance and the repair of heart parts are not needed, the maintenance is simple, meanwhile, the power consumption is reduced by more than 50%, and the long-term economic benefit can be brought to enterprises.
The existing reaction kettle liquid nitrogen deep cooling system directly conveys liquid nitrogen to a reaction kettle to exchange heat with materials, the materials are subjected to chemical reaction under the low-temperature condition after the temperature of the materials is reduced, and the cooling speed is uncontrollable and the temperature can not be controlled at constant temperature.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects and providing a liquid nitrogen deep cooling system of a reaction kettle.
In order to overcome the defect that exists among the background art, the utility model provides a technical scheme that its technical problem adopted is: the input pipeline of the reactor jacket outlet connection of the reactor liquid nitrogen cryogenic system is connected to the inlet of the reactor jacket through the cryogenic heat exchanger, a three-way diverter valve is arranged at one end of the reactor jacket outlet connection on the input pipeline, connected to one end of the cryogenic heat exchanger, the reactor jacket outlet input pipeline is divided into two ways through the three-way diverter valve, one way of pipeline is connected to the inlet of the reactor jacket, the other way of pipeline is connected to the cryogenic heat exchanger, the output pipeline of the cryogenic heat exchanger and the pipeline of the reactor jacket outlet input pipeline, connected to the inlet of the reactor jacket through the three-way diverter valve, are converged and then connected to the inlet of the reactor jacket.
According to the utility model discloses a further embodiment, further include connect on the cryogenic heat exchanger and be used for cryogenic liquid nitrogen import and pipeline and nitrogen gas export one and the pipeline, be equipped with the ooff valve on liquid nitrogen access connection's pipeline.
According to the utility model discloses a still connect the expansion tank on the input pipeline of reation kettle jacket exit linkage, be equipped with 3 pipelines on the expansion tank, a pipeline is located the upper end of expansion tank and nitrogen gas entry is connected to one end, nitrogen gas export two is connected to the other end, a pipeline is connected to reation kettle jacket exit linkage's input pipeline through the valve on, a pipeline is connected to the vapour and liquid separator on reation kettle jacket exit linkage's the input tube through the valve, a relief valve is still connected to the upper end of expansion tank, a liquid level display is connected to expansion tank one side.
According to the utility model discloses a further include that reation kettle presss from both sides input pipeline that jacket exit linkage is equipped with temperature transmitter one, vapour and liquid separator, circulating pump and valve on the cover in proper order.
According to the utility model discloses a further embodiment, further include be equipped with pressure transmitter and temperature transmitter two on the pipeline after converging.
The utility model has the advantages that: the reaction kettle liquid nitrogen deep cooling system is simple in structure, and a three-way shunt valve is added in a pipeline to form a shunt mode, so that the cooling speed of a circulating medium can be accurately controlled, and the constant temperature control can be realized after the temperature required by the reaction is reached.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
wherein: 1. the system comprises a liquid nitrogen inlet, a reaction kettle jacket inlet, 3, nitrogen outlets I and I, 4, a pressure transmitter, 5, a temperature transmitter II and II, 6, a switch valve, 7, a nitrogen outlet II and II, 8, a cryogenic heat exchanger, 9, a three-way flow divider valve, 10, an expansion tank, 11, a safety valve, 12, a circulating pump, 13, a gas-liquid separator, 14, a liquid level display, 15, a nitrogen inlet, 16, a temperature transmitter I and II, 17 and a reaction kettle jacket outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The embodiments of the basic utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, an input pipeline connected with a jacket outlet 17 of a reaction kettle is connected to a jacket inlet 2 of the reaction kettle through a cryogenic heat exchanger 8, a three-way diverter valve 9 is arranged at one end of the cryogenic heat exchanger 8 and connected with the input pipeline connected with the jacket outlet 17 of the reaction kettle, the input pipeline of the jacket outlet 17 of the reaction kettle is divided into two ways through the three-way diverter valve 9, one way of pipeline is connected to the jacket inlet 2 of the reaction kettle, the other way of pipeline is connected to the cryogenic heat exchanger 8, and an output pipeline of the cryogenic heat exchanger 8 and a pipeline connected to the jacket inlet 2 of the reaction kettle through the three-way diverter valve 9 are converged and then connected to the jacket inlet 2.
An input pipeline of a jacket outlet 17 of the reaction kettle is divided into two paths through a three-way diverter valve 9, one path of pipeline is connected to an inlet 2 of the jacket of the reaction kettle, a heat-conducting medium of the pipeline and the other path of pipeline are connected to a cryogenic heat exchanger 8, and the cooled heat-conducting medium output by an output pipeline of the cryogenic heat exchanger 8 enters the inlet 2 of the jacket of the reaction kettle after heat exchange. The PIC system controls the opening of the three-way diverter valve 9 to adjust the proportion of the two ways to adjust the cooling speed.
The cryogenic heat exchanger 8 is connected with a liquid nitrogen inlet 1 and a pipeline for refrigeration, a nitrogen outlet 3 and a pipeline, and a switching valve 6 is arranged on the pipeline connected with the liquid nitrogen inlet 1. The cryogenic heat exchanger 8 is provided with nitrogen for circulating and cooling heat-conducting media input by an input pipeline connected with the jacket outlet 17 of the reaction kettle.
Still connect expansion tank 10 on the input pipeline of reation kettle jacket export 17 connection, be equipped with 3 pipelines on the expansion tank 10, a pipeline is located the upper end of expansion tank 10, and nitrogen gas entry 15 is connected to one end, nitrogen gas export two 7 is connected to the other end, a pipeline is connected to on the input pipeline of reation kettle jacket export 17 connection through the valve, a pipeline is connected to the vapour and liquid separator 13 on the input pipe of reation kettle jacket export 17 connection through the valve, a relief valve 11 is still connected to the upper end of expansion tank 10, a liquid level display 14 is connected to expansion tank 10 one side. And due to the cold contraction of the heat-conducting medium, the pressure in the expansion tank is reduced, and the nitrogen is filled to stabilize the pressure. The gas-liquid separator can separate bubbles generated in the operation of the pipeline.
And a first temperature transmitter 16, a gas-liquid separator 13, a circulating pump 12 and a valve are sequentially arranged on an input pipeline connected with a jacket outlet 17 of the reaction kettle. The first temperature transmitter 16 is mainly used for displaying the temperature of the initially input heat-conducting medium.
And a pressure transmitter 4 and a second temperature transmitter 5 are arranged on the converged pipeline. The pressure transmitter 4 displays the pipeline pressure, the pressure alarm is generated when the pipeline pressure exceeds the preset pressure, the temperature transmitter II 5 displays the temperature of the output heat-conducting medium, and when the temperature is not consistent with the preset temperature, the PIC system controls the opening of the three-way diverter valve 9 to adjust the proportion of two ways so as to adjust the cooling speed.
Examples
The outlet 17 of the jacket of the reaction kettle is connected with a pump, heat-conducting medium is input through the pump, the heat-conducting medium is connected to a three-way diverter valve 9 through a circulating pump 12 and is divided into two paths through the three-way diverter valve 9, one path of pipeline is connected to the inlet 2 of the jacket of the reaction kettle, the other path of pipeline is connected to a cryogenic heat exchanger 8, the heat-conducting medium refrigerated by the cryogenic heat exchanger and the uncooled heat-conducting medium input by the outlet 17 of the jacket of the reaction kettle are subjected to heat exchange and then output through the inlet of the jacket.
How to finish thermostatic control in the implementation process is mainly displayed by the second temperature transmitter 5, when the temperature displayed by the second temperature transmitter 5 is higher than a constant value, the opening degree of the three-way flow divider valve 9 is adjusted through PIC system control, the flow input to the cryogenic heat exchanger 8 is increased until the converged temperature is in the constant value, and otherwise, when the temperature displayed by the second temperature transmitter 5 is lower than the constant value, the flow input to the cryogenic heat exchanger 8 is reduced.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. The utility model provides a reation kettle liquid nitrogen cryrogenic system, includes that the input line that reation kettle presss from both sides cover export (17) to be connected to reation kettle and presss from both sides cover import (2), its characterized in that through cryrogenic heat exchanger (8): on the input pipeline that reation kettle presss from both sides cover export (17) to be connected, tube coupling is equipped with tee bend flow divider (9) in cryrogenic heat exchanger (8) one end department, reation kettle presss from both sides cover export (17) input pipeline and falls into two the tunnel through tee bend flow divider (9), tube coupling is connected to reation kettle and presss from both sides cover import (2) all the way, another way tube coupling is connected to cryrogenic heat exchanger (8), the output pipeline of cryrogenic heat exchanger (8) is connected to reation kettle and presss from both sides the pipeline that export (17) input pipeline were connected to reation kettle and press from both sides cover import (2) through tee bend flow divider (9) and joins back.
2. The liquid nitrogen cryogenic system of a reaction vessel of claim 1, wherein: the cryogenic heat exchanger (8) is connected with a liquid nitrogen inlet (1) and a pipeline for refrigeration, a nitrogen outlet (3) and a pipeline, and a switch valve (6) is arranged on the pipeline connected with the liquid nitrogen inlet (1).
3. The liquid nitrogen cryogenic system of a reaction vessel of claim 1, wherein: still connect expansion tank (10) on the input pipeline that reation kettle pressed from both sides cover export (17) and connect, be equipped with 3 pipelines on expansion tank (10), a pipeline is located the upper end of expansion tank (10), and nitrogen gas entry (15) are connected to one end, nitrogen gas export two (7) are connected to the other end, a pipeline is connected to on the input pipeline that reation kettle pressed from both sides cover export (17) and connects through the valve, a pipeline is connected to vapour and liquid separator (13) on the input pipe that reation kettle pressed from both sides cover export (17) and connect through the valve, a relief valve (11) are still connected to the upper end of expansion tank (10), a liquid level display (14) is connected to expansion tank (10) one side.
4. The liquid nitrogen cryogenic system of a reaction vessel of claim 1, wherein: and a first temperature transmitter (16), a gas-liquid separator (13), a circulating pump (12) and a valve are sequentially arranged on an input pipeline connected with a jacket outlet (17) of the reaction kettle.
5. The liquid nitrogen cryogenic system of a reaction vessel of claim 1, wherein: and a pressure transmitter (4) and a second temperature transmitter (5) are arranged on the converged pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921996325.4U CN210206808U (en) | 2019-11-19 | 2019-11-19 | Nitrogen deep cooling system for reaction kettle liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921996325.4U CN210206808U (en) | 2019-11-19 | 2019-11-19 | Nitrogen deep cooling system for reaction kettle liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210206808U true CN210206808U (en) | 2020-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921996325.4U Active CN210206808U (en) | 2019-11-19 | 2019-11-19 | Nitrogen deep cooling system for reaction kettle liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210206808U (en) |
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2019
- 2019-11-19 CN CN201921996325.4U patent/CN210206808U/en active Active
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