Segmented heating reaction kettle

Abstract

The utility model provides a sectional heating reaction kettle which comprises a reaction kettle body, a stirring assembly is arranged in the reaction kettle body and used for stirring reaction raw materials in the reaction kettle body, a plurality of temperature control shells are arranged outside the reaction kettle body in the axial direction, and each temperature control shell can be filled with a heat-conducting medium. Each temperature control shell is communicated to the heat exchange unit through an independent loop, a thermometer and a liquid level meter are arranged on the reaction kettle, the thermometer is used for measuring the temperature of reaction raw materials in the reaction kettle, and the liquid level meter is used for measuring the liquid level height of the reaction raw materials in the reaction kettle. According to the sectional heating reaction kettle disclosed by the utility model, the heat exchange range of the temperature control shell can be adjusted according to the quantity of materials in the reaction kettle, so that the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of reaction kettles, in particular to a reaction kettle capable of being heated in sections. Background Art

[0002] The broad understanding of a reactor is a container for physical or chemical reactions. Through the structural design and parameter configuration of the container, the heating, evaporation, cooling and low-speed mixing functions required by the process are realized. Reactors are widely used in the fields of petroleum, chemical industry, dyes, medicine and food. They are pressure vessels used to complete processes such as vulcanization, nitration, polymerization and condensation. The reactor strictly regulates important parameters such as temperature, pressure, mechanical control (stirring, blasting), reactant / product concentration, etc. during the reaction process, and temperature is its main controlled quantity and an important factor in ensuring product quality. The reactor uses a heat-conducting medium to control the temperature of the material in the reactor through the jacket of the reactor. The heat-conducting medium introduced into the reactor is required to maintain a constant temperature. By adjusting the flow of the heat-conducting medium flowing into the jacket of the reactor, the temperature of the material in the reactor is controlled to meet the process requirements.

[0003] At present, the jacket structure of the reactor is an integrated structure. The existing device will have the following problems when in use: during the heating process of the kettle body, the rapid temperature rise causes the temperature of the kettle body to be unstable during use, and the temperature rise cannot be controlled, which is inconvenient to use. Secondly, the jacket is set on the outside of the kettle body to achieve heating. When the raw materials in the reactor are small or the consumption is increasing, it occupies a small volume in the entire kettle body, and heating the entire kettle body will cause great energy waste. There is an urgent need for a segmented heating reactor that can be synchronously adjusted according to the amount of reaction raw materials in the kettle body, set the jacket heating range to achieve automatic temperature control, and reduce production costs to solve the above technical problems. Utility Model Content

[0004] In view of this, the utility model aims to propose a reactor that can be heated in sections to solve the problem in the prior art that when the reactor is in working state, the entire reactor body needs to be temperature controlled and insulated, which causes energy waste when there are fewer reactants in the reactor body.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A segmentally heated reactor comprises a reactor, wherein a stirring assembly is arranged inside the reactor, the stirring assembly is used to stir the reaction materials in the reactor, a plurality of temperature-controlled shells are arranged axially outside the reactor, each temperature-controlled shell can be filled with a heat-conducting medium, and each temperature-controlled shell is connected to a heat exchange unit through an independent loop, a thermometer and a liquid level gauge are arranged on the reactor, the thermometer is used to measure the temperature of the reaction materials in the reactor, and the liquid level gauge is used to measure the liquid level height of the reaction materials in the reactor.

[0007] Furthermore, the temperature-controlled shell is a hollow cylindrical structure, and the outer periphery of the reactor is nested in the inner circle of the temperature-controlled shell. A first cavity is provided in the temperature-controlled shell, and the first cavity is connected to both ends of the heat exchange unit through a first feed pipe and a first discharge pipe.

[0008] Furthermore, a groove is provided at the upper end of the temperature control shell, and the bottom of the reactor is nested in the groove. A second cavity is provided in the temperature control shell, and the second cavity is connected to both ends of the heat exchange unit through a second feed pipe and a second discharge pipe respectively.

[0009] Furthermore, the temperature control shell is provided with an annular cavity, a heat conducting coil is arranged in the annular cavity, and both ends of the heat conducting coil are connected to the heat exchange unit through a third feed pipe and a third discharge pipe respectively, and liquid medium is filled inside the annular cavity and outside the heat conducting coil.

[0010] Furthermore, the heat transfer medium of the heat exchange unit is heat transfer oil, and the temperature control shell can be filled with heat transfer oil.

[0011] Furthermore, a temperature regulating valve is installed on each of the independent circuits.

[0012] Furthermore, a shut-off valve is installed on each of the independent circuits.

[0013] Furthermore, the stirring assembly includes a central axis, and the outer periphery of the central axis is rotatably sleeved on the reactor, one end of the central axis is fixedly connected to the transmission shaft of the power motor, the power motor is fixedly installed on the reactor, and the other end of the central axis is installed with stirring blades, which are used to stir the reaction materials in the reactor.

[0014] Furthermore, the stirring blades are arranged in a spiral shape on the central axis.

[0015] Compared with the prior art, the segmented heating reactor described in the utility model has the following beneficial effects:

[0016] The temperature can be gradually raised according to the liquid level of reactants in the reactor and the reaction temperature requirements, and the temperature change inside the reactor can be controlled through the thermometer and linked with each independent circuit to achieve segmented temperature control, reduce manpower consumption and improve heat transfer efficiency;

[0017] The heat exchange range of each temperature-controlled shell can be adjusted according to the amount of material inside the reactor body. When the raw materials in the reactor body are saturated, all the temperature-controlled shells can be opened. As the reaction proceeds, the raw materials are consumed, and when the volume occupied in the entire reactor body is small, only the bottom temperature-controlled shell can be opened for heating. The above-mentioned reactor setting method realizes segmented temperature control, avoids the waste of energy by a small amount of reactants, reduces production costs, and has high adjustability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the working principle of a segmented heating reactor according to an embodiment of the utility model;

[0020] Figure 2 This is a schematic structural diagram of a temperature-controlled housing according to a first embodiment of the present utility model;

[0021] Figure 3 It is a cross-sectional schematic diagram of the temperature control housing of the first embodiment of the utility model;

[0022] Figure 4 This is a schematic structural diagram of a temperature-controlled housing according to a second embodiment of the present utility model;

[0023] Figure 5 It is a cross-sectional schematic diagram of the temperature control housing of the second embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the heat-conducting coil described in an embodiment of the utility model;

[0025] Figure 7 It is a schematic structural diagram of the stirring assembly described in an embodiment of the utility model.

[0026] Description of reference numerals:

[0027] 1-reactor; 2-stirring assembly; 21-power motor; 22-central axis; 23-stirring blade; 3-temperature control shell; 31-first cavity; 32-first feed pipe; 33-first discharge pipe; 34-groove; 35-second cavity; 36-second feed pipe; 37-second discharge pipe; 38-heat transfer coil; 39-third feed pipe; 310-third discharge pipe; 4-independent circuit; 41-temperature regulating valve; 42-shutoff valve; 5-thermometer; 6-liquid level gauge. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0029] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0032] like Figure 1-Figure 7 As shown, a segmented heating reactor comprises a reactor 1, and a stirring assembly 2 is arranged inside the reactor 1, the stirring assembly 2 is used to stir the reaction materials in the reactor 1, a plurality of temperature control shells 3 are arranged outside the reactor 1 along the axial direction, each temperature control shell 3 can be filled with a heat-conducting medium, and each temperature control shell 3 is connected to a heat exchange unit through an independent loop 4, a thermometer 5 and a liquid level gauge 6 are arranged on the reactor 1, the thermometer 5 is a temperature sensor of the prior art, and the liquid level gauge 6 is a laser-beaming liquid level sensor of the prior art, the thermometer 5 is used to measure the temperature of the reaction materials in the reactor 1, and the liquid level gauge 6 is used to measure the liquid level height of the reaction materials in the reactor 1, and the temperature can be gradually increased according to the liquid level of the reactants in the reactor 1 and the reaction temperature requirements, and the temperature change inside the reactor 1 is controlled by the thermometer 5 and each independent loop 4 is linked to realize segmented temperature control, reduce manpower consumption, and improve heat transfer efficiency;

[0033] The heat exchange range of each temperature-controlled shell 3 can be adjusted according to the amount of material inside the reactor body 1. When the raw material in the reactor body 1 is saturated, all the temperature-controlled shells 3 can be opened. As the reaction proceeds, the raw material is consumed, and when the volume occupied in the entire reactor body is small, only the bottom temperature-controlled shell 3 can be opened for heating. The above-mentioned setting method of the reactor 1 realizes segmented temperature control, avoids the waste of energy by a small amount of reactants, reduces production costs, and has high adjustability.

[0034] like Figure 2-Figure 6 As shown, the temperature control housing 3 has multiple embodiments:

[0035] like Figure 2 and Figure 3 As shown, the first embodiment of the temperature control shell 3 is a hollow cylindrical structure, and the outer periphery of the reactor 1 is nested in the inner circle of the temperature control shell 3. A first cavity 31 is provided in the temperature control shell 3. The first cavity 31 is connected to the two ends of the heat exchange unit through a first feed pipe 32 and a first discharge pipe 33 respectively. In implementation, a plurality of hollow cylindrical temperature control shells 3 can be axially arranged on the outer periphery of the reactor 1 to perform segmented temperature control.

[0036] like Figure 4 and Figure 5 As shown in the second embodiment of the temperature control housing 3, the upper end of the temperature control housing 3 is provided with a groove 34, and the bottom of the reactor 1 is nested in the groove 34, and a second cavity 35 is provided in the temperature control housing 3, and the second cavity 35 is connected to the two ends of the heat exchange unit through a second feed pipe 36 and a second discharge pipe 37, respectively, as shown in FIG. Figure 1 As shown, the temperature-controlled housing 3 of the second embodiment is placed at the bottom of the reactor 1, and the temperature-controlled housing 3 of the first embodiment is placed above the temperature-controlled housing 3 of the second embodiment, and the height of the temperature-controlled housing 3 of the first embodiment is lower than the height of the temperature-controlled housing 3 of the second embodiment.

[0037] like Figure 6 As shown, a third embodiment of the temperature-controlled shell 3, the temperature-controlled shell 3 is provided with an annular cavity, a heat-conducting coil 38 is arranged in the annular cavity, and both ends of the heat-conducting coil 38 are connected to the heat exchange unit through a third feed pipe 39 and a third discharge pipe 310 respectively, and the inside of the annular cavity and the periphery of the heat-conducting coil 38 are filled with liquid medium.

[0038] The above three embodiments can be implemented separately or any combination of the three embodiments can meet the needs of segmented temperature control. The staff can use them according to the working conditions, which will not be elaborated here.

[0039] In this embodiment, the heat transfer medium of the heat exchange unit is heat transfer oil, and the temperature control housing 3 can be filled with heat transfer oil. Figure 1As shown, a temperature regulating valve 41 is installed on each of the independent circuits 4, or a shut-off valve 42 is installed on each of the independent circuits 4, or a temperature regulating valve 41 and a shut-off valve 42 are respectively installed on each of the independent circuits 4, and the temperature regulating valve 41 and the shut-off valve 42 described in this embodiment are both solenoid valves, the temperature regulating valve 41 is used to adjust the flow opening of the independent circuit 4, and the shut-off valve 42 is used to control the on-off of the independent circuit 4.

[0040] like Figure 7 As shown, the stirring assembly 2 includes a central axis 22, and the outer periphery of the central axis 22 is rotatably sleeved on the reactor 1, one end of the central axis 22 is fixedly connected to the transmission shaft of the power motor 21, the power motor 21 is fixedly installed on the reactor 1, and the other end of the central axis 22 is installed with stirring blades 23, the stirring blades 23 are used to stir the reaction materials in the reactor 1, and the stirring blades 23 are spirally arranged on the central axis 22. The spirally arranged stirring blades 23 can make the reaction materials in the reactor 1 surge, and at the same time can avoid the generation of vortices, thereby improving the stirring efficiency.

[0041] A working process of a reactor 1 that can be heated in sections:

[0042] The control method of this embodiment is controlled by a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. This article is mainly used to protect mechanical devices. The control method and circuit connection are not explained in detail in this article. The thermometer 5, liquid level meter 6, heat exchanger, temperature regulating valve 41 and shut-off valve 42 are respectively connected to the controller by signals.

[0043] like Figure 1 As shown, when the raw materials in the reactor 1 are saturated and start to heat and react, the stirrer stirs at the same time. The thermometer 5 is interlocked with the temperature regulating valve 41 installed on the second feed pipe 36 and the temperature regulating valve 41 installed on the first feed pipe 32 to control the flow of the heat transfer oil entering the temperature control housing 3, adjust the reaction temperature in the reactor 1 to rise in an orderly manner, prevent the reactor 1 from overheating, and realize automatic temperature control.

[0044] As the raw materials in the reactor 1 are continuously consumed, the volume of the reactor body becomes smaller and smaller to 45% to 55%, and all the raw materials are concentrated at the bottom of the reactor 1. The liquid level meter 6 is interlocked with the shut-off valve 42 installed on the first feed pipe 32 to timely feedback the material amount and close the first feed pipe 32 for the entry of heat transfer oil to prevent sintering on the side of the reactor 1 and avoid energy waste.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A reactor that can be heated in sections, characterized in that: The invention comprises a reactor (1), wherein a stirring assembly (2) is arranged inside the reactor (1), the stirring assembly (2) is used to stir the reaction raw materials in the reactor (1), a plurality of temperature control shells (3) are arranged outside the reactor (1) along the axial direction, each temperature control shell (3) can be filled with a heat-conducting medium, and each temperature control shell (3) is connected to a heat exchange unit through an independent loop (4), and a thermometer (5) and a liquid level gauge (6) are arranged on the reactor (1), the thermometer (5) is used to measure the temperature of the reaction raw materials in the reactor (1), and the liquid level gauge (6) is used to measure the liquid level of the reaction raw materials in the reactor (1).

2. The stepwise heating reactor according to claim 1, characterized in that: The temperature control shell (3) is a hollow cylindrical structure, and the outer periphery of the reaction kettle (1) is nested in the inner circle of the temperature control shell (3). A first cavity (31) is provided in the temperature control shell (3), and the first cavity (31) is connected to the two ends of the heat exchange unit through a first feed pipe (32) and a first discharge pipe (33).

3. The stepwise heating reactor according to claim 1, characterized in that: A groove (34) is provided at the upper end of the temperature control shell (3), and the bottom of the reactor (1) is nested in the groove (34). A second cavity (35) is provided in the temperature control shell (3), and the second cavity (35) is connected to the two ends of the heat exchange unit through a second feed pipe (36) and a second discharge pipe (37), respectively.

4. The stepwise heating reactor according to claim 1, characterized in that: The temperature control housing (3) is provided with an annular cavity, a heat conducting coil (38) is arranged in the annular cavity, and the two ends of the heat conducting coil (38) are connected to the heat exchange unit through a third feed pipe (39) and a third discharge pipe (310), respectively, and a liquid medium is filled inside the annular cavity and outside the heat conducting coil (38).

5. The stepwise heating reactor according to claim 1, characterized in that: The heat transfer medium of the heat exchange unit is heat transfer oil, and the temperature control shell (3) can be filled with heat transfer oil.

6. The stepwise heating reactor according to claim 1, characterized in that: A temperature regulating valve (41) is installed on each of the independent circuits (4).

7. The stepwise heating reactor according to claim 1, characterized in that: A shut-off valve (42) is installed on each of the independent circuits (4).

8. The stepwise heating reactor according to claim 1, characterized in that: The stirring assembly (2) comprises a central shaft (22), and the outer periphery of the central shaft (22) is rotatably sleeved on the reaction kettle (1), one end of the central shaft (22) is fixedly connected to the transmission shaft of the power motor (21), the power motor (21) is fixedly mounted on the reaction kettle (1), and the other end of the central shaft (22) is mounted with a stirring blade (23), and the stirring blade (23) is used to stir the reaction materials in the reaction kettle (1).

9. The stepwise heating reactor according to claim 8, characterized in that: The stirring blades (23) are arranged in a spiral shape on the central axis (22).

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