Temperature heater for preparing dichlorohexane
By installing three sets of circumferentially arrayed heaters on the outside of the reactor, combined with an external heating shell and an internal heat-conducting arc tube, the problems of slow heating speed or excessively high local temperature of existing heaters are solved, achieving uniform heating of the reactor and design flexibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-03-31
AI Technical Summary
Existing reactor temperature heaters suffer from slow heating rates or excessively high local temperatures, affecting reaction uniformity and design adaptability.
The heaters are installed in a three-circular array, including an outer heating shell and an inner heat-conducting arc tube. Kerosene is used as the heat transfer medium. The outer heating shell heats the reactor wall, while the inner heat-conducting arc tube heats the interior of the reactor uniformly.
Uniform heating of the reactor was achieved, improving the heating rate and reaction uniformity, while avoiding interference with external mechanisms of the reactor and simplifying design adaptability.
Smart Images
Figure CN224065677U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field technical field of dichloroethane preparation, concretely is the preparation temperature heater of dichlorohexane. BACKGROUND
[0002] The preparation principle of dichlorohexane is mainly based on organic chemical reaction, raw materials are put into the reaction kettle for stirring and temperature rising, and are treated by delamination after pressure standing.
[0003] In the preparation process of the reaction kettle, the stirring and temperature rising of the reaction kettle is one of the important steps. The existing reaction kettle temperature rising device generally adopts a temperature heater. The temperature heater has two modes of external heating with a shell and internal fixed heating. The external heating with a shell is set outside, and although the heating is uniform, the heating speed is slow. Moreover, due to the fact that some reaction kettles are externally provided with a series of external mechanisms including a material inlet and fixing members, the shell design needs to be designed according to different reaction kettles, which is troublesome. The internal heater is set at one position, and although the heating is rapid, the local temperature is too high, which affects the reaction uniformity. In view of the above situation, the utility model provides a preparation temperature heater for dichlorohexane to solve the above problems. UTILITY MODEL CONTENTS
[0004] In view of the deficiencies of the prior art, the utility model provides a preparation temperature heater for dichlorohexane, which solves the problems of external shell heating, slow heating speed, and the need for different reaction kettles to design the shell design according to different reaction kettles. The internal heater is set at one position, and although the heating is rapid, the local temperature is too high, which affects the reaction uniformity.
[0005] To achieve the above purpose, the utility model realizes the following technical scheme: a preparation temperature heater for dichlorohexane, including a heater, the heater is provided with three groups, and is circumferentially arrayed and installed at the outer end of the reaction kettle, the heater includes, a heating shell, which presents an arc outer shape, the heating shell is filled with kerosene, which is used for heat conduction to the reaction kettle from the outside, an inner heat conduction arc pipe, which is fixedly connected to the inner end of the heating shell and communicates with the heating shell, the inner heat conduction arc pipe is arranged in the reaction kettle and conducts heat from the inside, a heating element, which is fixedly installed in the heating shell, and the heating element is used for heating the kerosene in the heating shell.
[0006] Preferably, the heating shell is fixedly connected with an arc-shaped shell at the outer end, a fixed port is formed at the top end of the heating shell, and the heating element is fixedly connected in the fixed port.
[0007] Preferably, the inner end of the heating shell is fixedly connected with a fixed block, a heating arc pipe fixed end is arranged in the fixed block, the inner heat conduction arc pipe is fixedly connected with the heating arc pipe fixed end, and a sealing ring is fixedly connected outside the heating arc pipe fixed end.
[0008] Preferably, the heating shell is internally provided with a kerosene accommodating cavity, the kerosene accommodating cavity is used for loading kerosene, and a heat insulation arc plate is arranged on the inner wall of one end of the kerosene accommodating cavity and used for heat insulation.
[0009] Preferably, the top end of the heating shell is fixedly connected with a kerosene input end, the kerosene input end is used for inputting kerosene, the bottom end of the heating shell is fixedly connected with a kerosene output pipe, the kerosene output pipe is used for outputting kerosene, a control valve body is fixedly connected on the kerosene output pipe, and the control valve body is used for controlling the kerosene output pipe.
[0010] Preferably, the fixed block is fixedly connected with a heat conduction arc plate, the heat conduction arc plate is tightly attached to the wall of the reaction kettle and conducts heat inwardly, preferably, the heating element comprises an electrical input head, the electrical input head is fixedly connected on the fixed port, an electrical heating column is fixedly connected at the bottom of the electrical input head, and the electrical heating column is immersed in kerosene to heat the kerosene.
[0011] The utility model discloses a preparation temperature heater of dichlorohexane, and has the beneficial effects as follows: the preparation temperature heater of dichlorohexane is provided with inner and outer two parts which are communicated with each other, so that the heater can heat the reaction kettle wall outside, and can heat the inside of the reaction kettle through the arrayed inner heat conduction arc pipes, which will not block the mechanism outside the reaction kettle, and the three groups of inner arrayed heat conduction arc pipes can uniformly heat, so that the heating effect is better. BRIEF DESCRIPTION OF DRAWINGS
[0012] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.
[0013] Figure 1 It is the whole front structure schematic diagram of the utility model;
[0014] Figure 2 It is the whole side structure schematic diagram of the utility model;
[0015] Figure 3 It is the whole detail structure schematic diagram of the utility model;
[0016] Figure 4 This is a schematic diagram of the overall rear structure of this utility model;
[0017] Figure 5 This is a schematic diagram of the overall internal structure of this utility model.
[0018] In the diagram: 1. Heater; 11. Heating shell; 111. Arc-shaped outer shell; 112. Fixed port; 113. Fixed block; 114. Fixed end of heating arc tube; 1141. Sealing ring; 115. Kerosene container cavity; 116. Insulating arc plate; 12. Inner heat-conducting arc tube; 13. Heating element; 131. Electrical input head; 132. Electric heating column; 14. Kerosene input end; 15. Heat-conducting arc plate; 16. Kerosene output pipe; 161. Control valve body. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0020] This application provides a heater for the preparation temperature of dichlorohexane, which solves the problems of external shell heaters, which, although heating more uniformly, have a slow heating speed, and whose shell design is complicated because some reactors have a series of external mechanisms including feed inlets and fixing parts, requiring customized design for different reactors; and internal heaters, which, although heating more rapidly, have excessively high local temperatures, affecting the uniformity of the reaction, because they are located in one place.
[0021] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.
[0022] This utility model discloses a heater for preparing dichlorohexane.
[0023] Example 1
[0024] According to the appendix Figures 1-5 As shown,
[0025] The reactor includes a heater 1, which has three sets arranged in a circumferential array at the outer end of the reactor. The heater 1 includes a heating shell 11, which is arc-shaped and filled with kerosene for conducting heat to the reactor from the outside; an inner heat-conducting arc tube 12, which is fixedly connected to the inner end of the heating shell 11 and communicates with the heating shell 11, and is disposed inside the reactor for conducting heat from the inside; and a heating element 13, which is fixedly installed inside the heating shell 11 for heating the kerosene inside the heating shell 11. In use, the reactor wall is heated through the heating shell 11, and the reactor interior is heated through the inner heat-conducting arc tube 12. The three sets of heaters in the array provide uniform heating to the reactor interior. Kerosene is used as the heat transfer medium, and the inner heat-conducting arc tube 12 and the heating shell 11 conduct heat.
[0026] An arc-shaped outer shell 111 is fixedly connected to the outer end of the heating housing 11. A fixed port 112 is opened at the top of the heating housing 11, and the heating element 13 is fixedly connected inside the fixed port 112. A fixed block 113 is fixedly connected to the inner end of the heating housing 11, and a heating arc tube fixed end 114 is opened inside the fixed block 113. An inner heat-conducting arc tube 12 is fixedly connected to the heating arc tube fixed end 114, and a sealing ring 1141 is fixedly connected to the outside of the heating arc tube fixed end 114. A kerosene receiving cavity 1 is opened inside the heating housing 11. 15. The kerosene container 115 is used to load kerosene. A heat insulation arc plate 116 is provided on the inner wall of one end of the kerosene container 115 for heat insulation. A kerosene input end 14 is fixedly connected to the top of the heating shell 11 for inputting kerosene. A kerosene output pipe 16 is fixedly connected to the bottom of the heating shell 11 for outputting kerosene. A control valve body 161 is fixedly connected to the kerosene output pipe 16 for controlling the kerosene output pipe 16.
[0027] Example 2
[0028] According to the appendix Figures 2-5 As shown, based on Example 1;
[0029] A heat-conducting arc plate 15 is fixedly connected to the fixed block 113. The heat-conducting arc plate 15 is in close contact with the reactor wall and conducts heat inward. The heating element 13 includes an electrical input head 131, which is fixedly connected to the fixed port 112, and an electric heating column 132, which is fixedly connected to the bottom of the electrical input head 131. The electric heating column 132 is immersed in kerosene to heat the kerosene.
[0030] Furthermore, the preparation principle of dichlorohexane is as follows;
[0031] The main reaction equation is:
[0032]
[0033] Preparation steps:
[0034] Step 1, Synthesis: 1,6-Hexanediol is pumped into reactor 11, and then 36% hydrochloric acid is added. After the addition is complete, the mixture is stirred and heated to 108°C. The pressure is then increased to 3-3.2 kg, and the pressure is maintained for timing. The reaction is monitored until 0.1% of the raw material remains. The reaction is then complete, the mixture is allowed to stand, and the layers are separated. The lower layer is the hydrochloric acid layer, and the upper layer is the crude product. The hydrochloric acid layer is transferred to the by-product hydrochloric acid tank in the tank area via a transfer tank, and the crude product layer is transferred to neutralization reactor 12 for neutralization.
[0035] The second step is neutralization: the crude product is neutralized, allowed to stand and separate into liquid and liquid phases. The lower layer is the oil phase, and the upper layer is the aqueous phase. The aqueous phase is discharged into the wastewater system, while the oil phase is fed into distillation vessel 13 for distillation.
[0036] The third step is distillation: Five batches of crude product, approximately 3900 kg, are collected. The initial impurity peaks are 0.2%–0.3% and 0.4%–0.5%, with a main content of 97%–98%. The alcohol peak is less than 0.5%, and the final peak is around 2%. High-tower negative-pressure distillation is performed. After conversion of the initial fractions, 3400 kg of finished product is obtained, with initial impurities of 0.2%, 0.3%, and 99.4%, and a final impurity of approximately 0.1%.
[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A temperature heater for the preparation of dichlorohexane, comprising a heater (1), characterized in that, The heater (1) is provided with three groups, and is installed in a circumferential array at the outer end of the reaction kettle. The heating shell (11) is filled with kerosene, and is used for heat conduction from the outside to the reaction kettle. The inner heat conduction arc pipe (12) is fixedly connected to the inner end of the heating shell (11) and communicates with the heating shell (11), and is arranged in the reaction kettle and conducts heat from the inside. The heating element (13) is fixedly installed in the heating shell (11), and is used for heating the kerosene in the heating shell (11). The outer end of the heating shell (11) is fixedly connected with an arc-shaped shell (111), and the top end of the heating shell (11) is provided with a fixed port (112), and the heating element (13) is fixedly connected in the fixed port (112). The inner end of the heating shell (11) is fixedly connected with a fixed block (113), and the fixed block (113) is provided with a heating arc pipe fixed end (114) in the inside, and the inner heat conduction arc pipe (12) is fixedly connected to the heating arc pipe fixed end (114), and the heating arc pipe fixed end (114) is fixedly connected with a sealing ring (1141) outside.
2. The temperature heater for preparing dichlorohexane according to claim 1, characterized in that: The heating shell (11) is provided with a kerosene accommodating cavity (115) in the inside, which is used for loading kerosene, and the inner wall of one end of the kerosene accommodating cavity (115) is provided with a heat insulation arc plate (116), which is used for heat insulation.
3. The temperature heater for the preparation of dichlorohexane according to claim 1, characterized by the fact that: The top end of the heating shell (11) is fixedly connected with a kerosene input end (14), which is used for inputting kerosene.
4. The temperature heater for the preparation of dichlorohexane according to claim 1, characterized by the fact that: The bottom end of the heating shell (11) is fixedly connected with a kerosene output pipe (16), which is used for outputting kerosene, and the kerosene output pipe (16) is fixedly connected with a control valve body (161), which is used for controlling the kerosene output pipe (16).
5. The temperature heater for the preparation of dichlorohexane according to claim 1, characterized by the fact that: The fixed block (113) is fixedly connected with a heat conduction arc plate (15), which is tightly attached to the wall of the reaction kettle and conducts heat inward.
6. The temperature heater for the preparation of dichlorohexane according to claim 1, characterized by the fact that: The heating element (13) comprises: An electrical input head (131) is fixedly connected to the fixed port (112); An electric heating column (132) is fixedly connected to the bottom of the electrical input head (131), and the electric heating column (132) is immersed in kerosene to heat the kerosene.