CN216987601U

CN216987601U - Temperature control device of reaction kettle

Info

Publication number: CN216987601U
Application number: CN202123331062.5U
Authority: CN
Inventors: 糜海佳; 王婷婷
Original assignee: Zhejiang Huayi Engineering Design Co ltd
Current assignee: Zhejiang Huayi Engineering Design Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-07-19
Anticipated expiration: 2031-12-28

Abstract

The technical scheme discloses a temperature control device of a reaction kettle, which comprises a heat medium tank, a heat medium transfer pump, a heat medium heat exchanger, a refrigerant tank, a refrigerant delivery pump, a compressor, the reaction kettle, an external circulation pump, an external circulation heat exchanger, a jacket medium tank, a first cut-off valve, a second cut-off valve, a third cut-off valve and a fourth cut-off valve; the heat medium tank is matched with the heat medium heat exchanger through a heat medium material transferring pump to form hot internal circulation, and the refrigerant tank is matched through a refrigerant material conveying pump to form cold internal circulation; the jacket of the reaction kettle is matched with the external circulation heat exchanger through a jacket medium tank and an external circulation pump to form medium internal circulation. The technical problem solved by the technical scheme is as follows: how to control the temperature of the reaction kettle only by a medium in the jacket of the reaction kettle.

Description

Temperature control device of reaction kettle

Technical Field

The utility model relates to a device for controlling the temperature of a reaction kettle jacket so as to realize the temperature control of the reaction kettle.

Background

The temperature control of the reaction kettle is mainly realized by introducing media such as a refrigerant, a heating medium and normal-temperature circulating water into a jacket of the reaction kettle, the three media cannot be mixed with each other, purging is required before switching every time, and residues exist all the time, so that the media are polluted, and the quality of the media is influenced. Adopt above-mentioned mode simultaneously to make reation kettle press from both sides the cover and establish the timing and also have the limitation, the current reation kettle heat transfer method of mill at present mostly is two house stewards and realizes always carrying, and two house stewards adopt the bypass cooperation reation kettle of expenditure respectively, because the invariant of inlet temperature, often because the difference in temperature is great and unable accurate accuse temperature to the regulation of reation kettle temperature like this.

Through retrieval, chinese patent publication No. 20180420 discloses a system and method for controlling the temperature of a reaction kettle, the system comprises a reaction kettle with a jacket/coil, an internal circulation pump, three thermometers, a high temperature heat exchange medium inlet switch valve, a normal temperature heat exchange medium inlet switch valve, a low temperature heat exchange medium inlet switch valve, a high temperature heat exchange medium outlet switch valve, a normal temperature heat exchange medium outlet switch valve, a low temperature heat exchange medium outlet switch valve, a jacket/coil outlet regulating valve and a check valve; the heat exchange medium inlet main pipe, the internal circulating pump, the reaction kettle jacket/coil pipe, the heat exchange medium outlet main pipe and the jacket/coil pipe outlet adjusting valve form a heat exchange medium external circulating system; the reaction kettle jacket/coil pipe, the internal circulation branch, the check valve and the internal circulation pump form a heat exchange medium internal circulation system; the utility model adopts the temperature in the reaction kettle and the temperature of the inlet and the outlet of the jacket/coil pipe to control the heat exchange medium to heat or cool the reaction kettle, has higher automation degree, simpler operation, higher control precision and greatly improved heat exchange efficiency. The method still does not break through the problem that different media still need to be introduced into the jacket of the reaction kettle.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a temperature control device of a reaction kettle, which solves the technical problems that: how to control the temperature of the reaction kettle only by a medium in the jacket of the reaction kettle.

The reaction kettle temperature control device comprises a heat medium tank, a heat medium transfer pump, a heat medium heat exchanger, a refrigerant tank, a refrigerant delivery pump, a compressor, a reaction kettle, an external circulating pump, an external circulating heat exchanger, a jacket medium tank, a first cut-off valve, a second cut-off valve, a third cut-off valve and a fourth cut-off valve; the heat medium tank is matched with the heat medium heat exchanger through a heat medium material transferring pump to form hot internal circulation, and the refrigerant tank is matched with the refrigerant material transferring pump to form cold internal circulation; the jacket of the reaction kettle is matched with the external circulation heat exchanger through a jacket medium tank and an external circulation pump to form medium internal circulation; the heat medium tank is matched with a first material inlet of the medium storage tank through a first stop valve, the refrigerant tank is matched with a second material inlet of the medium storage tank through a second stop valve, and a material outlet of the jacket medium tank is respectively matched with the heat medium tank and the refrigerant tank through a heat medium return pipeline and a refrigerant return pipeline; the heating medium return pipeline is provided with a third stop valve, and the cooling medium return pipeline is provided with a fourth stop valve.

And the heat medium heat exchanger is provided with a circulating cooling water inlet pipe and a circulating cooling water outlet pipe.

And the external circulation heat exchanger is provided with a circulating hot water inlet pipe and a circulating hot water outlet pipe.

And the hot tank is provided with a vent pipe.

And the circulating hot water inlet pipe is provided with a second regulating valve and a fifth stop valve.

And a first regulating valve is arranged at the intersection position of the heating medium return pipeline and the cooling medium return pipeline.

And a seventh thermometer is arranged on the reaction kettle.

And a sixth thermometer is arranged on the reaction kettle jacket.

And a fifth thermometer is arranged on the jacket medium tank.

A first thermometer is arranged on the heating medium tank, a third thermometer is arranged on the cooling medium tank, a second thermometer is arranged on a pipeline between the heating medium tank and the jacket medium tank, and a fourth thermometer is arranged on a pipeline between the cooling medium tank and the jacket medium tank.

The utility model has the beneficial effects that: the medium in the jacket medium tank is used for regulating and controlling the temperature of the jacket of the reaction kettle, so that only one substance is contained in the jacket, and the condition that no pollutant exists in the jacket of the reaction kettle can be ensured. The design of the heat medium heat exchanger is the core of the energy-saving design of the device, the heat of the whole system is taken away and indirectly transferred to the circulating cooling water through the temperature reduction of the circulating cooling water, and meanwhile, the circulating cooling water is the cheapest public work at present, and the load of a compressor is reduced. Meanwhile, due to the design of the thermometer, the outlet temperature of the heating medium can be changed according to seasons, namely the lower the ambient temperature is, the better the energy-saving effect of the device is. In the energy-saving automatic temperature control device, the temperature control adjustment range is-15 ℃ to 95 ℃. And the device can change the adjusting range by replacing the heat medium and the medium of the circulating heat exchanger. The maximum adjustment range is-10 ℃ to 220 ℃.

Drawings

FIG. 1 is a schematic view of the apparatus of the present invention;

in the figure, 11 is a heat medium tank, 12 is a heat medium material transfer pump, 13 is a heat medium heat exchanger, 14 is an emptying pipe, 15 is a circulating cooling water inlet pipe, 16 is a circulating cooling water outlet pipe, 21 is a refrigerant tank, 22 is a refrigerant delivery pump, 23 is a compressor, 31 is a jacket medium tank, 311 is a first material inlet, 312 is a second material inlet, 32 is an external circulating pump, 33 is an external circulating heat exchanger, 34 is a circulating hot water inlet pipe, 35 is a circulating hot water outlet pipe, 36 is a heat medium return pipeline, 37 is a refrigerant return pipeline, 41 is a first cut-off valve, 42 is a second cut-off valve, 43 is a third cut-off valve, 44 is a fourth cut-off valve, 45 is a fifth cut-off valve, 51 is a first thermometer, 52 is a second thermometer, 53 is a third thermometer, 54 is a fourth thermometer, 55 is a fifth thermometer, 56 is a sixth thermometer, 57 is a seventh thermometer, 61 is a first regulating valve, 62 is a second regulating valve, and a second regulating valve is arranged between the first regulating valve and the second regulating valve, 7. Reaction kettle, 71, jacket.

Detailed Description

Referring to fig. 1, the core innovation of the present invention is to use a single medium to adjust the temperature of the jacket 71 of the reaction kettle 7, and the medium is subjected to heat exchange by a heating medium or a cooling medium; the heat medium tank 11, the refrigerant tank 21, and the jacket medium tank 31 are provided with a heat medium heat exchanger 13, a refrigerant heat exchanger, and an external circulation heat exchanger 33, respectively, so that the temperature of the tanks can be controlled. The reactor 7 regulating device is provided with a heat medium tank 11, a heat medium material transferring pump 12, a heat medium heat exchanger 13, a refrigerant tank 21, a refrigerant delivery pump 22, a compressor 23, a jacket medium tank 31, an external circulating pump 32, an external circulating heat exchanger 33, five cut-off valves and seven thermometers; and conventional necessary components such as a one-way valve, a controller and the like of a pipeline and a corresponding valve body are arranged among the components. Wherein heat medium jar 11 is used for storing heat medium, and heat medium commentaries on classics material pump 12 is used for carrying heat medium backward flow to heat medium jar 11 or carry to jacket medium jar 31, and heat medium heat exchanger 13 is used for carrying out the heat transfer to heat medium and adjusts the temperature. The refrigerant tank 21 is used for storing a refrigerant, the refrigerant delivery pump 22 is used for delivering the refrigerant to return to the refrigerant tank 21 or the jacket medium tank 31, and the compressor 23 is used for compressing the refrigerant according to working conditions. The jacket medium tank 31 is used for storing a jacket 71 heat exchange medium of the reaction kettle 7, the reaction kettle 7 is used for providing a reaction space, the external circulation pump 32 is used for conveying the jacket 71 medium to the jacket 71 of the reaction kettle 7, and the external circulation heat exchanger 33 is used for exchanging heat for the jacket 71 medium. The stop valve is used for cutting off corresponding pipeline conveying. The thermometer is used for detecting the temperature value of the measured object. The components are all conventional components, and in practical application, other components can be added to improve the effect of the device.

A heat medium tank 11, a heat medium material transfer pump 12 and a heat medium heat exchanger 13 are connected end to end through pipelines to form a set of heat internal circulation path. The hot internal circulation means that the heat medium enters the heat medium heat exchanger 13 from the heat medium tank 11, and then flows back to the heat medium tank 11 from the heat medium heat exchanger 13 or is conveyed to the jacket medium tank 31, so that the heat medium heat exchanger 13 is used for exchanging heat and regulating temperature of the heat medium. The heat medium heat exchanger 13 is provided with a circulating cooling water inlet pipe 15 and a circulating cooling water outlet pipe 16, so that heat exchange and temperature regulation are performed with external circulating cooling water. The heat medium is cooled by circulating cooling water, and the cooling degree is changed according to the room temperature condition, so that cheap energy can be utilized to the maximum extent for cooling, and the energy consumption of the system is reduced. The heating medium recycle pump 12 may also deliver heating medium to the jacketed medium tank 31. To avoid high pressure build-up in the hot tank, a vent 14 may be designed on the hot tank. A first thermometer 51 is provided on the corresponding heat medium tank 11 to detect the temperature of the heat medium tank 11, and a second thermometer 52 is provided between the heat medium tank 11 and the jacket medium tank 31 to detect the temperature of the heat medium introduced into the jacket medium tank 31. The heating medium can be room temperature water, the heating medium is cooled through the room temperature water, the cooling degree changes according to the room temperature condition, and the purpose is to utilize low-cost energy to the maximum extent for cooling and reduce the energy consumption of the system. The heating medium has a first shut-off valve 41 at a first material inlet 311 into the jacket medium tank 31.

A refrigerant tank 21, a refrigerant delivery pump 22 and a compressor 23 are connected end to form a set of cold internal circulation path. The cold internal circulation refers to that the refrigerant flows back to the refrigerant tank 21 or is conveyed to the jacket medium tank 31 through the refrigerant conveying pump 22 and the compressor 23 in sequence, so that the temperature of the refrigerant outlet is ensured to be stable by the compressor 23, and the temperature is ensured to be stable when the refrigerant enters the jacket medium tank 31. Correspondingly, the refrigerant tank 21 is provided with a third thermometer 53 for detecting the refrigerant in the refrigerant tank 21, a fourth thermometer 54 is arranged between the refrigerant tank 21 and the jacket medium tank 31 for detecting the temperature of the refrigerant led into the jacket medium tank 31, the refrigerant can adopt the refrigerant material commonly adopted by the existing reaction kettle 7, and the second material inlet 312 of the refrigerant entering the jacket medium tank 31 is provided with a second cut-off valve 42. The compressor 23 is interlocked with the second thermometer 52 to ensure the temperature stability of the refrigerant outlet and ensure the accurate temperature control of the reaction kettle 7.

The jacket 71 of the reaction kettle 7 of the scheme is matched with the external circulation heat exchanger 33 through the jacket medium tank 31 and the external circulation pump 32 to form medium internal circulation; the medium internal circulation refers to that the medium flowing in the jacket 71 is the medium stored in the jacket medium tank 31, such as the medium of ethylene glycol, and the ethylene glycol is circulated and applied in the above parts. A fifth thermometer 55 is provided in the jacketed medium tank 31 to detect the temperature of the medium in the tank. The external circulation heat exchanger 33 is provided with a circulation hot water inlet pipe 34 and a circulation hot water outlet pipe 35, so that heat exchange is carried out on the external circulation heat exchanger 33 by utilizing external high-temperature hot water, wherein the circulation hot water inlet pipe 34 is provided with a fifth stop valve 45 and a second regulating valve 62, so that the entering or entering amount of the hot water is regulated and controlled, the temperature regulation and control of the external circulation heat exchanger 33 are kept, and thus the regulated medium can enter a jacket 7171 of the reaction kettle 7 and then flows back to the jacket medium tank 31 from the jacket 71 of the reaction kettle 7. At this time, the sixth thermometer 56 was fitted to the jacket 71 of the reaction vessel 7, and the seventh thermometer 57 was fitted to the reaction vessel 7, so that the internal temperatures of the jacket 71 of the reaction vessel 7 and the reaction vessel 7 were measured in real time. The jacket medium tank 31 is also provided with a heat medium return pipeline 36 and a refrigerant return pipeline 37, so that heat medium and refrigerant after heat exchange return to the heat medium tank 11 and the refrigerant tank 21 to realize that the material outlet of the jacket medium tank 31 is respectively matched with the heat medium tank 11 and the refrigerant tank 21 through the heat medium return pipeline 36 and the refrigerant return pipeline 37; can design parts such as two-way valve in the specific cover medium tank 31, make things convenient for the access of heat medium pipeline and refrigerant pipeline like this, it is corresponding, have third trip valve 43 on the heat medium return line 36, have fourth trip valve 44 on the refrigerant return line 37, like this more one of them trip valve of closing of operating condition selectivity, dispose first governing valve 61 in the position of crossing of these two return lines simultaneously to regulation and control in going on the backward flow volume, automatic accurate accuse temperature. The external circulating pump 32 of the scheme circulates the medium to the jacket 71 of the reactor, and the temperature of the medium at the outlet of the jacket 71 is only 5 ℃ higher than that of the medium at the inlet of the jacket of the reactor, so that the temperature stability of the medium at the inlet of the jacket of the reactor can be ensured.

With the above arrangement, the apparatus can automatically switch the supply of the cooling medium according to the seasonal change by the controller, and automatically switch the first cut-off valve 41 and the second cut-off valve 42 to change the feed medium to the jacket medium tank 31 by comparing the seventh thermometer 57 in the reaction vessel 7 with the second thermometer 52 and the fourth thermometer 54; simultaneously, the third shut-off valve 43 and the fourth shut-off valve 44 are automatically switched to change the direction of the discharged medium, compared with the first thermometer 51 and the second thermometer 52; and compared with the fifth thermometer 55, the fifth cut-off valve 45 is automatically opened, the second regulating valve 62 is controlled and regulated, the temperature in the jacket 71 of the reaction kettle 7 is stably controlled, a stable water bath system is ensured, and the temperature is automatically and accurately controlled.

The working principle of the automatic energy-saving temperature control device is as follows: the initial temperature of the reaction vessel 7 was set and indicated by a seventh thermometer 57. According to the comparison between the seventh thermometer 57 and the second thermometer 52 and the seventh thermometer 57, the refrigerant or heat medium feeding medium is automatically selected, and the flow is automatically controlled through the first regulating valve 61 to realize temperature control. When the set value is changed, the temperature in the jacket 711 is automatically adjusted by operating the fifth thermometer 55, the second regulating valve 62, and the fifth shut valve 45. In the temperature control device, the heat medium heat exchanger 13 is set as the core of the energy-saving design of the device, the heat of the whole system is taken away and indirectly transferred to the circulating cooling water through the temperature reduction of the circulating cooling water, and meanwhile, the circulating cooling water is the cheapest public engineering at present, and the load of the compressor 23 is reduced. And the thermometer is arranged, so that the outlet temperature of the heating medium can be changed according to seasons, namely the lower the ambient temperature is, the better the energy-saving effect of the device is. In the energy-saving automatic temperature control device, the temperature control adjusting range is-15 ℃ to 95 ℃, and the device can change the adjusting range through replacing the heat medium, the cold medium and the medium. The maximum adjustment range is-10 ℃ to 220 ℃.

The above-described embodiments are merely illustrative of the present invention and are not intended to limit the present invention. In the description of the present technical solution, it should be noted that the terms such as "upper", "inner", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for convenience of describing the technical solution and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the technical solution.

Meanwhile, in the description of the present technical solution, it should be noted that, unless explicitly specified or limited otherwise, the terms "fixed" and "matched" should be interpreted broadly, for example, they may be fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present technical solution can be understood by those of ordinary skill in the art according to specific situations.

Although embodiments of the present technical solution have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the technical solution, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Reation kettle temperature regulating device, including heat medium jar (11), refrigerant jar (21), its characterized in that: the device also comprises a heating medium material transferring pump (12), a heating medium heat exchanger (13), a refrigerant material transferring pump, a compressor (23), a reaction kettle (7), an external circulating pump (32), an external circulating heat exchanger (33), a jacket medium tank (31), a first cut-off valve (41), a second cut-off valve (42), a third cut-off valve (43) and a fourth cut-off valve (44); the heat medium tank (11) is matched with the heat medium heat exchanger (13) through a heat medium material transferring pump (12) to form heat internal circulation, and the refrigerant tank (21) is matched through a refrigerant material transferring pump to form cold internal circulation; a jacket (71) of the reaction kettle (7) is matched with an external circulation heat exchanger (33) through a jacket medium tank (31) and an external circulation pump (32) to form medium internal circulation; the heat medium tank (11) is matched with a first material inlet (311) of the medium tank through a first stop valve (41), the refrigerant tank (21) is matched with a second material inlet (312) of the medium tank through a second stop valve (42), and a material outlet of the jacket medium tank (31) is respectively matched with the heat medium tank (11) and the refrigerant tank (21) through a heat medium backflow pipeline (36) and a refrigerant backflow pipeline (37); the heating medium return pipeline (36) is provided with a third stop valve (43), and the cooling medium return pipeline (37) is provided with a fourth stop valve (44).

2. The temperature control device for the reaction kettle according to claim 1, wherein: and the heat medium heat exchanger (13) is provided with a circulating cooling water inlet pipe (15) and a circulating cooling water outlet pipe (16).

3. The temperature control device for the reaction kettle according to claim 2, wherein: the external circulation heat exchanger (33) is provided with a circulation hot water inlet pipe (34) and a circulation hot water outlet pipe (35).

4. The temperature control device of the reaction kettle of claim 3, wherein: and an emptying pipe (14) is arranged on the heat medium tank (11).

5. The temperature control device of the reaction kettle of claim 4, wherein: the circulating hot water inlet pipe (34) is provided with a second regulating valve (62) and a fifth stop valve (45).

6. The temperature control device of the reaction kettle of claim 5, wherein: the crossing position of the heating medium return pipeline (36) and the cooling medium return pipeline (37) is provided with a first regulating valve (61).

7. The temperature control device of the reaction kettle of claim 6, wherein: and a seventh thermometer (57) is arranged on the reaction kettle (7).

8. The temperature control device of the reaction kettle of claim 7, wherein: and a sixth thermometer (56) is arranged on the jacket (71) of the reaction kettle (7).

9. The temperature control device for the reaction kettle according to claim 8, wherein: and a fifth thermometer (55) is arranged on the jacket medium tank (31).

10. The temperature control device for the reaction kettle according to claim 9, wherein: a first thermometer (51) is arranged on the heat medium tank (11), a third thermometer (53) is arranged on the refrigerant tank (21), a second thermometer (52) is arranged on a pipeline between the heat medium tank (11) and the jacket medium tank (31), and a fourth thermometer (54) is arranged on a pipeline between the refrigerant tank (21) and the jacket medium tank (31).