Heating reflux device capable of preventing system from building pressure

Abstract

The utility model provides a heating reflux device for preventing system pressure building, which comprises a reaction kettle, a heat exchanger and a gas-liquid separator, the reaction kettle is connected with the heat exchanger through a heating pipeline, the heat exchanger is connected with the gas-liquid separator, and the gas-liquid separator is connected with the reaction kettle through a reflux pipeline; the reaction kettle is provided with a liquid outlet and a liquid inlet, and the liquid inlet is provided with an anti-blocking mechanism. According to the heating reflux device capable of preventing system pressure building, different pipelines are used in the heating evaporation process and the reflux re-condensation process, no liquid reaction liquid exists in the evaporation pipeline, the pipeline blocking probability is reduced, an anti-blocking mechanism is further arranged at the position of the liquid inlet, and blocking prevention is further carried out by enlarging the inner diameter.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the chemical industry field especially, and it relates to a kind of heating reflux devices for preventing system pressure. BACKGROUND

[0002] A kind of liquid mixture of our company needs heating reflux to promote mixture to occur chemical reaction, i.e. the mixture with medium A, B as main component is heated to reflux, provides higher temperature and longer reaction time.By heating, reaction rate and yield can be improved, and reaction process is accelerated.At the same time, the process of reflux can effectively prevent the loss and volatilization of reactants.

[0003] At present, heating and reflux process share a pipeline, because the reflux of reaction liquid is realized by using heat exchanger, the reflux speed is large, and reaction liquid is easy to block pipeline, causing system pressure, staff needs to frequently pay attention to temperature table and pressure gauge on site, carries out venting operation, and staff labor intensity is large, but effect is still poor, and also because of frequent operation, it brings greater safety risk. SUMMARY

[0004] Therefore, the utility model aims at overcoming the defects in the prior art, and proposes a heating reflux device for preventing system pressure.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A kind of heating reflux device for preventing system pressure, including reaction kettle, heat exchanger, gas-liquid separator, the reaction kettle is connected with the heat exchanger by heating pipeline, the heat exchanger is connected with the gas-liquid separator, the gas-liquid separator is connected with the reaction kettle by reflux pipeline;

[0007] Liquid outlet is equipped on the reaction kettle, liquid inlet, liquid inlet is equipped with anti-blocking mechanism;

[0008] The anti-blocking mechanism includes connecting pipe sleeve, anti-blocking pipe sleeve and anti-blocking baffle, one end of the connecting pipe sleeve is connected with the reflux pipeline, the other end is connected with the anti-blocking pipe sleeve, the anti-blocking pipe sleeve is connected with the liquid inlet, the anti-blocking baffle is matched with the anti-blocking pipe sleeve, and the inner diameter of the connecting pipe sleeve is smaller than the inner diameter of the anti-blocking pipe sleeve.

[0009] Further, the inner side of the anti-blocking baffle is provided with a control rod and a limiting piece, the sidewall of the anti-blocking sleeve is internally provided with a limiting cavity, the limiting cavity is provided with a limiting frame, the limiting frame is provided with a guide sleeve, and one end of the control rod is connected with the anti-blocking cylinder through the guide sleeve and the anti-blocking sleeve.

[0010] Further, the sidewall of the anti-blocking sleeve is provided with a limiting groove, and the limiting groove is matched with the limiting piece.

[0011] Further, the liquid outlet end of the gas-liquid separator is provided with an electromagnetic flowmeter.

[0012] Further, the reaction kettle is provided with a stirrer.

[0013] Further, the reflux pipeline is provided with a magnetic float liquid level transmitter.

[0014] Further, the reaction kettle is further provided with a pressure transmitter and a temperature transmitter.

[0015] Further, the heating pipeline and the reflux pipeline are both provided with control valves.

[0016] The heat exchanger is provided with a pipeline for frozen brine outlet water and a pipeline for frozen brine return water, and the pipelines are both provided with control valves.

[0017] The gas-liquid separator is provided with a pipeline for tail gas treatment.

[0018] Compared with the prior art, the application has the following advantages:

[0019] The heating evaporation and reflux recondensation processes of the pressure system pressure relief heating reflux device use different pipelines, the evaporation pipeline is free of liquid reaction liquid, the pipeline blocking probability is reduced, and the liquid inlet is further provided with an anti-blocking mechanism, the inner diameter is enlarged, and the anti-blocking is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings that form a part of the present application are used to provide a further understanding of the present application, the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0021] Fig. 1 Figure 1 is a schematic view of a heating backflow device for preventing system pressure from being blocked according to an embodiment of the present application;

[0022] Fig. 2 Figure 1 is a schematic view of a heating backflow device for preventing system pressure from being blocked according to an embodiment of the present application;

[0023] Reference signs:

[0024] 1, reactor; 2, heat exchanger; 3, gas-liquid separator; 4, magnetic flip plate liquid level transmitter; 5, electromagnetic flowmeter; 6, pressure transmitter; 7, temperature transmitter; 11, stirrer; 12, liquid outlet; 13, liquid inlet; 14, heating pipeline; 15, backflow pipeline; 16, anti-blocking mechanism; 161, connecting pipe sleeve; 162, anti-blocking pipe sleeve; 163, anti-blocking baffle; 1621, anti-blocking cavity; 1622, limiting groove; 1623, limiting cavity; 1624, limiting frame; 1625, guide sleeve; 1626, control rod; 1627, anti-blocking cylinder; 1631, limiting piece; 21, frozen brine water; 22, frozen brine backwater; 31, tail gas treatment. DETAILED DESCRIPTION

[0025] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0027] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two elements inside the communication.For ordinary skilled in the art, the above-mentioned terms can be understood by the specific meaning in the utility model through specific circumstances.

[0028] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0029] As Figs. 1-2 The utility model discloses a kind of temperature rising backflow devices for preventing system pressure, including reaction kettle 1, heat exchanger 2, gas-liquid separator 3, the reaction kettle 1 is connected with the heat exchanger 2 by temperature rising pipeline 14, the heat exchanger 2 is connected with the gas-liquid separator 3, the gas-liquid separator 3 is connected with the reaction kettle 1 by backflow pipeline 15;

[0030] The reaction kettle 1 is equipped with liquid outlet 12, liquid inlet 13, the liquid inlet 13 is equipped with anti-blocking mechanism 16;The anti-blocking mechanism 16 includes connecting pipe sleeve 161, anti-blocking pipe sleeve 162 and anti-blocking baffle 163, one end of the connecting pipe sleeve 161 is connected with the backflow pipeline 15, the other end is connected with the anti-blocking pipe sleeve 162, the anti-blocking pipe sleeve 162 is connected with the liquid inlet 13, the anti-blocking baffle 163 is matched with the anti-blocking pipe sleeve 162, the inner diameter of the connecting pipe sleeve 161 is less than the inner diameter of anti-blocking pipe sleeve 162.

[0031] The inner side of the anti-blocking baffle 163 is provided with control rod 1626 and limiting piece 1631, the sidewall of the anti-blocking pipe sleeve 162 is provided with limiting cavity 1623, the limiting cavity 1623 is provided with limiting frame 1624, the limiting frame 1624 is provided with guide sleeve 1625, one end of the control rod 1626 passes through the guide sleeve 1625, anti-blocking pipe sleeve 162 and anti-blocking cylinder 1627 are connected. The anti-blocking cylinder 1627 and pressure transmitter 6, temperature transmitter 7 are connected with controller, if pressure is too large, anti-blocking cylinder 1627 is opened, anti-blocking baffle 163 is driven to start outside, the inner diameter of sleeve pipe is increased, to prevent material congestion. Anti-blocking cylinder 1627 drives control rod 1626 to move outward in guide sleeve 1625, drives anti-blocking baffle 163 to move outward, expands the inner diameter of anti-blocking pipe sleeve 162, to prevent internal material from being blocked. The sidewall of the anti-blocking pipe sleeve 162 is provided with limiting groove 1622, the limiting groove 1622 is matched with the limiting piece 1631.

[0032] The liquid outlet end of the gas-liquid separator 3 is provided with an electromagnetic flowmeter 5. The reaction kettle 1 is provided with a stirrer 11. The reflux pipeline 15 is provided with a magnetic float liquid level transmitter 4. The reaction kettle 1 is further provided with a pressure transmitter 6 and a temperature transmitter 7. The heating pipeline 14 and the reflux pipeline 15 are both provided with control valves.

[0033] The heat exchanger 2 is provided with a pipeline for frozen brine outlet water 21 and a pipeline for frozen brine return water 22, and the pipelines are both provided with control valves. The gas-liquid separator 3 is provided with a pipeline for tail gas treatment 31.

[0034] During the working process of the reaction kettle 1, liquid enters the heat exchanger 2 through the heating pipeline 14, the gas-liquid separator 3, and then enters the reaction kettle 1 through the reflux pipeline 15 and the liquid inlet 13. If abnormal pressure occurs and blockage occurs, the anti-blocking air cylinder 1627 is started, the anti-blocking air cylinder 1627 drives the control rod 1626 to move outward in the guide sleeve 1625, drives the anti-blocking baffle 163 to move outward, expands the inner diameter of the anti-blocking pipe sleeve 162, and prevents the blockage of the internal materials.

[0035] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A temperature rise return device to prevent system pressure build-up, characterized by: The reaction kettle is connected with the heat exchanger through a heating pipeline, the heat exchanger is connected with the gas-liquid separator, and the gas-liquid separator is connected with the reaction kettle through a reflux pipeline. The reaction kettle is provided with a liquid outlet and a liquid inlet, and the liquid inlet is provided with an anti-blocking mechanism. The anti-blocking mechanism comprises a connecting pipe sleeve, an anti-blocking pipe sleeve and an anti-blocking baffle, one end of the connecting pipe sleeve is connected with the reflux pipeline, the other end is connected with the anti-blocking pipe sleeve, the anti-blocking pipe sleeve is connected with the liquid inlet, the anti-blocking baffle is matched with the anti-blocking pipe sleeve, and the inner diameter of the connecting pipe sleeve is smaller than that of the anti-blocking pipe sleeve.

2. The temperature rise return line arrestment device of claim 1, wherein: The inner side of the anti-blocking baffle is provided with a control rod and a limiting piece, the side wall of the anti-blocking pipe sleeve is provided with a limiting cavity, the limiting cavity is provided with a limiting frame, the limiting frame is provided with a guide sleeve, and one end of the control rod passes through the guide sleeve, the anti-blocking pipe sleeve and an anti-blocking cylinder.

3. The temperature rise return line arrestment device of claim 2, wherein: The side wall of the anti-blocking pipe sleeve is provided with a limiting groove, and the limiting groove is matched with the limiting piece.

4. The temperature rise return line arrestment device of claim 1, wherein: The liquid outlet end of the gas-liquid separator is provided with an electromagnetic flowmeter.

5. The temperature rise return line arrestment device of claim 1, wherein: The reaction kettle is provided with a stirrer.

6. The temperature rise return line arrestment device of claim 1, wherein: The reflux pipeline is provided with a magnetic flap liquid level transmitter.

7. The temperature rise return line arrestment device of claim 1, wherein: The reaction kettle is further provided with a pressure transmitter and a temperature transmitter.

8. The temperature rise return line arrestment device of claim 1, wherein: The heating pipeline and the reflux pipeline are both provided with control valves.

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