Automatic heat preservation device for reaction kettle

Abstract

The utility model discloses an automatic heat preservation device for a reaction kettle, which adopts the technical scheme that the automatic heat preservation device comprises the reaction kettle, a shell side of the reaction kettle is of a jacket structure, a heating device is arranged in a jacket of the shell side of the reaction kettle, a plurality of temperature sensors are further arranged on the reaction kettle, and the temperature sensors transmit signals to a DCS (Distributed Control System). The DCS control system is electrically connected with the frequency converter, and the frequency converter is electrically connected with the heating device. The device has the beneficial effects that the temperature of materials at the upper part, the middle part and the lower part of the reaction kettle is monitored in real time through the temperature sensor and then is transmitted to the DCS for control, and then the DCS controls the frequency converter to adjust the output frequency, respectively control the voltage at the two ends of the three groups of heating wires and control the heating value of the heating wires; the temperature of materials in the reaction kettle can be subjected to interlocking adjustment, so that the materials in the reaction kettle are always at the optimal reaction temperature, the production reaction efficiency is improved, the electric energy is saved, and the automatic heat preservation function of the reaction kettle is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical production equipment, and in particular relates to an automatic heat preservation device for a reaction kettle. Background Art

[0002] A reactor is a comprehensive reaction vessel that is widely used in the fields of petroleum, chemical industry, rubber, pesticide, dye, medicine and food. It is a pressure vessel used to complete processes such as vulcanization, nitration, hydrogenation, hydrocarbonization, polymerization, and condensation. Examples include reactors, reaction pots, decomposition pots, and polymerization kettles. Materials generally include carbon manganese steel, stainless steel, alloys, and other composite materials. Most chemical reactions require heating the reactor. Existing reactor heating devices can be divided into the following two categories: one is to control the temperature in the reactor by heating wires to stop heating after reaching the set temperature, and to turn on the heating wires for heating when the temperature in the reactor is lower than the set temperature; the other is to heat the medium in the reactor interlayer and transfer heat to the material in the reactor. The above two heating devices are not conducive to continuous and stable temperature control and have low heat transfer efficiency, and cannot achieve the continuous insulation function of the reactor. Summary of the Invention

[0003] In response to the problems in the above-mentioned prior art, the utility model provides an automatic insulation device for a reactor, whose technical solution is: comprising a reactor, the shell side of the reactor is a jacket structure, a heating device is arranged in the shell side jacket of the reactor, and a plurality of temperature sensors are also arranged on the reactor. The temperature sensors transmit signals to a DCS control system, the DCS control system is electrically connected to a frequency converter, and the frequency converter is electrically connected to the heating device.

[0004] As a preferred solution, the heating device is composed of three groups of heating wires, and the three groups of heating wires are installed in the upper, middle and lower parts of the shell jacket of the reactor.

[0005] As a preferred solution, there are three temperature sensors installed on the top of the reactor, and the temperature measuring ends thereof are respectively located at the upper, middle and lower parts of the reactor.

[0006] As a preferred solution, the frequency converter controls the three groups of heating wires of the heating device respectively.

[0007] As a preferred solution, the temperature sensor is fixedly connected to the top of the reactor via a flange.

[0008] Beneficial effects of the utility model:

[0009] The device uses three groups of temperature sensors to monitor the temperature of the materials in the upper, middle and lower parts of the reactor in real time, and then transmits the information to the DCS control system for PID open-loop control. The DCS system then controls the frequency converter to adjust the output frequency, and controls the voltage at both ends of the three groups of heating wires respectively, thereby controlling the operating current of the heating wires and the heating value of the heating wires. It can be interlocked with the temperature of the materials in the reactor to ensure that the materials in the reactor are always at the optimal reaction temperature, improve production reaction efficiency, save electricity, and realize the automatic insulation function of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of the present utility model.

[0011] In the figure: 1. Reactor; 2. Heating device; 3. Temperature sensor; 4. Frequency converter; 5. DCS control system. DETAILED DESCRIPTION

[0012] The present invention will be described in further detail below based on the accompanying drawings and specific embodiments.

[0013] Example 1

[0014] like Figure 1 The automatic insulation device for a reactor shown includes a reactor 1. The shell side of the reactor 1 is a jacketed structure. A heating device 2 is arranged in the shell side jacket of the reactor 1. Several temperature sensors 3 are also arranged on the reactor 1. The temperature sensors 3 transmit signals to a DCS control system 5. The DCS control system 5 is electrically connected to a frequency converter 4, and the frequency converter 4 is electrically connected to the heating device 2.

[0015] Furthermore, the heating device 2 is composed of three groups of heating wires, which are installed in the upper, middle and lower parts of the shell jacket of the reactor 1. They are arranged at different positions to heat materials at different positions respectively, thereby realizing zoned heating.

[0016] Furthermore, the temperature sensor 3 is composed of three groups and is installed on the top of the reactor 1. The temperature measuring ends are located at the upper, middle and lower parts of the reactor 1 respectively. The temperature measuring ends can measure the actual temperature of the material at different positions, thereby ensuring the accuracy of the measured temperature and preventing measurement errors.

[0017] Furthermore, the frequency converter 4 controls the three groups of heating wires of the heating device 2 respectively, so that the heating temperature of each group of heating wires is different, thereby realizing zoned heating of the material, preventing the situation where the local material temperature is too high or too low, and also saving electricity.

[0018] Furthermore, the temperature sensor 3 is fixedly connected to the top of the reactor 1 via a flange, and the flange connection is convenient for maintenance and replacement.

[0019] The above-mentioned device operates as follows: when the material in the reactor 1 starts to react, the temperature sensor 3 measures the temperatures at the upper, middle and lower positions of the reactor 1 and transmits the signals to the DCS control system. The DCS control system 5 then controls the frequency converter 4 to change the heating power of the heating device 2. Based on the different temperature data, the heating amount of each group of heating wires is different, ensuring that the materials at different positions are at the optimal reaction temperature, thereby improving the reaction efficiency and saving electricity, and realizing the automatic heat preservation function of the reactor 1.

Claims

1. An automatic heat preservation device for a reactor, comprising a reactor (1), wherein the shell side of the reactor (1) is a jacket structure, characterized in that: A heating device (2) is provided in the shell jacket of the reactor (1). A plurality of temperature sensors (3) are also provided on the reactor (1). The temperature sensors (3) transmit signals to a DCS control system (5). The DCS control system (5) is electrically connected to a frequency converter (4), and the frequency converter (4) is electrically connected to the heating device (2).

2. The automatic heat preservation device for a reactor according to claim 1, characterized in that: The heating device (2) is composed of three groups of heating wires, which are installed in the upper, middle and lower parts of the shell jacket of the reactor (1).

3. The automatic heat preservation device for a reactor according to claim 1, characterized in that: The temperature sensors (3) are in three groups and are installed on the top of the reactor (1), with the temperature measuring ends thereof being located at the upper, middle and lower parts of the reactor (1) respectively.

4. The automatic heat preservation device for a reactor according to claim 2, characterized in that: The frequency converter (4) controls the three groups of heating wires of the heating device (2) respectively.

5. The automatic heat preservation device for a reactor according to claim 3, characterized in that: The temperature sensor (3) is fixedly connected to the top of the reactor (1) via a flange.

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