CN203090909U - Oil bath heating and cooling system - Google Patents

Abstract

The utility model discloses an oil bath heating and cooling system. The oil bath heating and cooling system comprises a reaction kettle, a reaction kettle jacket, an oil inlet pipe, an oil outlet pipe, an oil pump and a heating device, wherein the reaction kettle jacket is sleeved outside the reaction kettle; the oil inlet pipe is connected with an oil inlet in the reaction kettle jacket so as to convey heat transfer oil into the reaction kettle jacket; the oil outlet pipe is connected with an oil outlet in the reaction kettle jacket so as to enable the heat transfer oil flowing out of the reaction kettle jacket to pass through; the oil pump is arranged on the oil outlet pipe; the heating device is provided with an oil inlet and an oil outlet; and the oil inlet in the heating device is communicated with the oil outlet pipe while the oil outlet in the heating device is communicated with the oil inlet pipe. The oil bath heating and cooling system also comprises a heat exchange device which is provided with an oil inlet and an oil outlet, wherein the oil inlet of the heat exchange device is communicated with the oil outlet pipe while the oil outlet of the heat exchange device is communicated with the oil inlet pipe. According to the oil bath heating and cooling system, the heat transfer oil flows through the heat exchange device, so that the temperature of the heat transfer oil flowing into the oil inlet pipe can be rapidly reduced, and the temperature of the heat transfer oil flowing into the reaction kettle jacket is further reduced.

Description

Oil bath heating and cooling system

technical field

The utility model relates to a cooling system, in particular to an oil bath heating and cooling system for controlling the temperature of a reactor, which is mainly used in the fields of chemical industry and pharmacy.

Background technique

Reactors are widely used in chemical and pharmaceutical fields. For chemical reactions that require oil bath heating, external circulation electric heating oil bath systems are often used to strictly control the reaction temperature. The technical method adopted is to set a jacket outside the reactor, the pipeline is filled with heat transfer oil, and the oil pump at the rear end of the heater is used to push the heat transfer oil to circulate in the whole system, and the reactor is heated to increase the temperature of the reactor.

Fig. 1 is a schematic diagram of an oil bath heating system in the prior art, a reactor jacket 1 is respectively connected to an oil inlet pipe 4 and an oil outlet pipe 5, wherein the height of the oil inlet pipe 4 is lower than that of the oil outlet pipe 5. The oil inlet pipe 4, the oil outlet pipe 5, the oil pump 2 and the heater 3 form a heat transfer oil circulation loop. In the case of taking the flow direction of the heated heat transfer oil as the limited direction, the oil outlet pipe 5, the oil pump 2 and the reaction kettle jacket 1 are all arranged downstream of the oil inlet pipe 4, and the oil pump 2 is arranged on the oil outlet pipe 5 and in the reaction kettle jacket. Downstream of sleeve 1, oil pump 2 is used to push the heat transfer oil to circulate in the whole circulation loop. Both sides of the reactor jacket 1 are respectively connected with an oil inlet pipe 4 and an oil outlet pipe 5 . One end of the heater 3 is connected to the oil outlet pipe 5 for receiving and reheating the heat transfer oil from the oil outlet pipe 5 after heat exchange with the reactor, and the other end of the heater 3 is connected to the oil inlet pipe 4 , and the oil pump 2 Under the impetus of the engine, the heated heat transfer oil is delivered to the reactor jacket 1 through the oil inlet pipe 4, so as to perform heat exchange again, so that the reactor can be heated and maintained at a higher temperature.

The problem existing in the prior art is that only the reactor can be heated, and when the temperature in the reactor is higher than the predetermined height, the temperature cannot be rapidly lowered. In some cases, such as when the temperature needs to be lowered after the reaction is completed, the materials need to be transferred to other reactors, which is time-consuming and labor-intensive.

Contents of the invention

In order to solve the problems existing in the prior art, the applicant of the utility model proposes a system capable of rapidly reducing the temperature of the reactor, that is, an oil bath heating and cooling system. The oil bath heating and cooling system according to the utility model includes a reactor, a reactor jacket set outside the reactor, and an inlet connected to the oil inlet of the reactor jacket to transport the heat transfer oil into the reactor jacket. An oil pipe, an oil outlet connected to the oil outlet of the reactor jacket to allow the heat transfer oil flowing out of the reactor jacket to flow through, an oil pump arranged on the oil outlet pipe, and a heating device, the heating device has an oil inlet and an oil outlet The oil inlet of the heating device communicates with the oil outlet pipe, and the oil outlet of the heating device communicates with the oil inlet pipe, wherein the oil bath heating and cooling system also includes a heat exchange device, the The heat exchange device has an oil inlet and an oil outlet, the oil inlet of the heat exchange device communicates with the oil outlet pipe, and the oil outlet of the heat exchange device communicates with the oil inlet pipe.

Preferably, the heat exchange device is a shell and tube heat exchanger.

Preferably, the heating device is equipped with a heating device valve at its oil inlet, and the heat exchange device is equipped with a heat exchange device valve at its oil inlet.

Preferably, the oil bath heating and cooling system further includes an oil-gas separator, and the oil-gas separator is arranged on the oil outlet pipe and arranged closer to the reactor jacket than the oil pump.

According to the oil bath heating and cooling system of the utility model, a heat exchange device is introduced. By letting the heat transfer oil flow through the heat exchange device, the temperature of the heat transfer oil in the oil inlet pipe can be rapidly reduced, thereby making the flow into the reactor jacket The temperature of the heat transfer oil decreases. According to the oil bath heating and cooling system of the utility model, an oil-gas separator is also equipped near the jacket of the reaction kettle on the oil outlet pipe. When the heated heat transfer oil passes through the oil-gas separator, the oil-gas separator removes the At the same time, avoid damage to the closed system due to thermal expansion and contraction during the heating and cooling process of the heat transfer oil.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the schematic diagram of the oil bath heating system of prior art;

Figure 2 is a block diagram of the oil bath heating and cooling system of the present invention.

In Figure 1-2:

1, 101, reactor jacket; 2, 102 oil pump; 3, heater; 4, 104, oil inlet pipe; 5, 105, oil outlet pipe; 103, heating device; 106, oil inlet pipe control valve; 107, oil outlet pipe control Valve; 108, heat exchange device; 109, oil-gas separator; 110, valve for heating device; 111, valve for heat exchange device.

Detailed ways

The technical solutions in the preferred embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described preferred embodiments are only preferred embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Fig. 2 shows the block diagram of the oil bath heating and cooling system of the present utility model. The oil bath heating and cooling system of the present invention includes a reactor jacket 101 , an oil inlet pipe 104 , an oil outlet pipe 105 , an oil pump 102 , a heating device 103 and a heat exchange device 108 . The oil inlet of the reactor jacket 101 is connected to the oil inlet pipe 106, the oil outlet of the reactor jacket 101 is connected to the oil outlet pipe 105, the reactor jacket 101 is set outside the reactor, and the heat transfer oil enters the reaction through the oil inlet pipe 104. In the reactor jacket 101 , the temperature of the reactor is controlled by means of heat exchange with the reactor. In order to ensure full contact between the heat transfer oil and the reactor, the height of the oil inlet of the reactor jacket 101 is lower than the height of the oil outlet of the reactor jacket 101 .

In this embodiment, the oil inlet pipe 104, the oil outlet pipe 105, the oil pump 102, the heating device 103 and the heat exchange device 108 constitute a heat transfer oil circulation loop. When the flow direction of the heated/cooled heat transfer oil is used as the limited direction, the oil outlet pipe 105, the reactor jacket 101 and the oil pump 102 are all arranged downstream of the oil inlet pipe 104, and the oil pump 102 is arranged on the oil outlet pipe 105 and is in the reaction stage. Downstream of the kettle jacket 1, the oil pump 2 is used to push the heat transfer oil to circulate in the whole circulation loop.

The heating device 103 has an oil inlet and an oil outlet, and the oil inlet of the heating device 103 communicates with the oil outlet pipe 105 for receiving the heat transfer oil from the oil outlet pipe 105 after heat exchange with the reactor and reheating it, The oil outlet of the heating device 103 communicates with the oil inlet pipe 104. Under the push of the oil pump 102, the heated heat transfer oil is transported into the reaction kettle jacket 101 through the oil inlet pipe 104, thereby performing heat exchange again, so that the reaction kettle is heated and Maintain a higher temperature. The heat exchange device 108 has an oil inlet and an oil outlet, and is arranged between the oil inlet pipe 104 and the oil outlet pipe 105 in parallel with the heating device 103, that is, the oil inlet of the heat exchange device 108 communicates with the oil outlet pipe 105, It is used to receive the heat transfer oil from the oil outlet pipe 105 after heat exchange with the reaction kettle and perform heat exchange and cooling. The oil outlet of the heat exchange device 108 is connected with the oil inlet pipe 104. Under the push of the oil pump 102, it passes through the heat exchange The cooled heat transfer oil is transported into the oil inlet pipe 104 and enters the reactor jacket 101 through the oil inlet pipe 104 . The heat exchange device 108 is a tube-and-tube heat exchanger, which is filled with a cooling medium, and is set so that the heat transfer oil goes through the tube side, and the cooling medium goes through the shell side. Since the utility model is not aimed at improving the structure of the tube-and-tube heat exchanger itself, and the aforementioned tube side and shell side are terms that can be understood by those skilled in the art, the detailed description of the tube-and-tube heat exchanger will not be given.

An oil inlet pipe control valve 106 and an oil outlet pipe control valve 107 are respectively provided at the place where the oil inlet pipe 104 is close to the reactor jacket 101 and the oil outlet pipe 105 is near the reactor jacket 101. Valve 107 controls the flow of heat transfer oil.

In addition, the heating device 103 is equipped with a heating device valve 110 at its oil inlet, and correspondingly, the heat exchange device 108 is equipped with a heat exchange device valve 111 at its oil inlet. When the temperature in the reaction kettle is higher than the expected temperature, close the valve 110 for the heating device, open the valve 111 for the heat exchange device, the heating device 103 stops working, and the heat exchange device 108 starts, and the heat exchanged will flow through the heat exchange device. The heat of the heat transfer oil at 108 is taken away, thereby reducing the temperature of the heat transfer oil delivered to the oil inlet pipe 104, thereby reducing the temperature of the heat transfer oil flowing into the reactor jacket 101.

In this embodiment, the oil bath heating and cooling system further includes an oil-gas separator 109, which is arranged on the oil outlet pipe 105 and is initially in an empty state. The oil-gas separator 109 is preferably arranged as close as possible to the reactor jacket 101 . When the heated heat transfer oil passes through the oil-air separator 109, the oil-air separator 109 removes the water vapor in the heat transfer oil, and at the same time avoids damage to the closed system caused by thermal expansion and contraction of the heat transfer oil during the heating and cooling process.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (4)

1. An oil bath heating and cooling system, including a reactor, a reactor jacket set outside the reactor, and an oil inlet pipe connected to the oil inlet of the reactor jacket to transport heat transfer oil into the reactor jacket , an oil outlet pipe connected to the oil outlet of the reactor jacket to allow the heat transfer oil flowing out of the reactor jacket to flow through, an oil pump arranged on the oil outlet pipe and a heating device, the heating device has an oil inlet and an oil outlet , the oil inlet of the heating device communicates with the oil outlet pipe, the oil outlet of the heating device communicates with the oil inlet pipe, and it is characterized in that the oil bath heating and cooling system also includes a heat exchange device, so The heat exchange device has an oil inlet and an oil outlet, the oil inlet of the heat exchange device communicates with the oil outlet pipe, and the oil outlet of the heat exchange device communicates with the oil inlet pipe. 2. The oil bath heating and cooling system according to claim 1, wherein the heat exchange device is a shell and tube heat exchanger. 3. The oil bath heating and cooling system according to claim 1 or 2, characterized in that, the heating device is equipped with a heating device valve at its oil inlet, and the heat exchange device is equipped with a valve at its oil inlet. Valves for heat exchangers. 4. The oil bath heating and cooling system according to claim 1, further comprising an oil-gas separator, the oil-gas separator is arranged on the oil outlet pipe and arranged closer to the oil pump than the oil pump. The reactor jacket described above. the

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