Steam heating device for methyl ester preparation

Abstract

The utility model belongs to the technical field of methyl ester production, and particularly relates to a steam heating device for methyl ester preparation, which comprises a reaction kettle, a feeding hole is formed in the top of the reaction kettle; the bottom of the reaction kettle is fixedly connected with a heating box; a heating wire is mounted in the heating box; the top of the reaction kettle is fixedly connected with a cooling box; a gas guide pipe is connected between the heating box and the reaction kettle; a steam pipe is arranged in the reaction kettle; the plurality of steam pipes are uniformly distributed in the reaction kettle; according to the step, a methyl ester raw material can react through the arrangement of the reaction kettle and the feeding port, the methyl ester raw material in the reaction kettle can be heated through the arrangement of the heating box, the heating wire, the cooling box and the steam pipe, the methyl ester raw material can react, methyl ester is prepared, steam can be condensed through the arrangement of the cooling box and the liquid guide pipe, and the methyl ester is prepared. And then the steam is circulated into the heating box, so that the waste of steam and water resources during preparation of methyl ester is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of methyl ester production, and specifically relates to a steam heating device for methyl ester preparation. Background Technique

[0002] (Methyl 5-chloro-2,3-dihydro-1-oxo-1H-indene-2-carboxylate) is an organic compound with the chemical formula C 11 H9ClO3, belonging to indene derivatives, having a specific chemical structure, which contains chlorine atoms, hydroxyl groups, oxygen atoms and carboxylic acid methyl ester groups. (Methyl 5-chloro-2,3-dihydro-1-oxo-1H-indene-2-carboxylate) is an important intermediate for the synthesis of the insecticide indoxacarb.

[0003] Indoxacarb is an organic compound and belongs to the broad-spectrum oxadiazine insecticides. It can enter the insect body through contact and stomach poisoning, and block the sodium ion channels in the nerve cells of insects, making the nerve cells lose their functions. The insecticidal activity of indoxacarb is not only effective against adults, but also effective against larvae, and can effectively control a variety of pests on crops such as grains, cotton, fruits and vegetables. In addition, the insecticidal mechanism of indoxacarb is different from that of other insecticides, so there will be no cross-resistance with other insecticides.

[0004] In the prior art, (methyl 5-chloro-2,3-dihydro-1-oxo-1H-indene-2-carboxylate) requires a large amount of steam for operations such as heating and distilling raw materials during the production process. During long-term use and observation, it is found that the existing steam recovery device has a relatively complex structure, a long recovery time, and a low recovery efficiency.

[0005] Therefore, the utility model provides a steam heating device for methyl ester preparation. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art and solve at least one problem proposed in the background technique, a steam heating device for methyl ester preparation is proposed.

[0007] The technical solution adopted by the present utility model to solve its technical problems is as follows: A steam heating device for methyl ester preparation according to the present utility model includes a reaction kettle; a feed inlet is provided at the top of the reaction kettle; a heating box is fixedly connected to the bottom of the reaction kettle; a heating wire is installed inside the heating box; a cooling box is fixedly connected to the top of the reaction kettle; a gas guide pipe is connected between the heating box and the reaction kettle; a steam pipe is provided inside the reaction kettle; the steam pipes are multiple and evenly distributed inside the reaction kettle; one end of the steam pipe is connected to the gas guide pipe, and the other end extends into the cooling box; a liquid guide pipe is fixedly connected to the bottom of the cooling box; the other end of the liquid guide pipe extends into the heating box. In this step, by providing a reaction kettle and a feed inlet, the methyl ester raw material can be reacted. By providing a heating box, a heating wire, a cooling box and a steam pipe, the methyl ester raw material inside the reaction kettle can be heated to make the methyl ester raw material react and prepare methyl ester. By providing a cooling box and a liquid guide pipe, the steam can be condensed and then circulated into the heating box to circulate the steam, reducing the waste of steam and water resources during methyl ester preparation.

[0008] Preferably, a first support shaft is fixedly connected inside the reaction kettle; a baffle plate is rotatably connected to the middle of the first support shaft; a torsion spring is provided between the baffle plate and the first support shaft; the first support shaft is larger than the bottom diameter of the feed inlet. In this step, by providing a first support shaft and a baffle plate, the feed inlet can be closed when the methyl ester raw material reacts inside the reaction kettle, thereby reducing the situation where the methyl ester raw material overflows from the feed inlet during the reaction inside the reaction kettle, and thus reducing the loss during methyl ester preparation.

[0009] Preferably, a motor is installed on the top of the reaction kettle; a second support shaft is rotatably connected inside the reaction kettle; the second support shaft is connected to the output end of the motor through a synchronous belt; a stirring blade is fixedly connected to the middle of the second support shaft; the stirring blades are multiple and evenly distributed in the middle of the second support shaft; a cleaning scraper is fixedly connected to the end of the stirring blade; the end of the cleaning scraper is attached to the inner wall of the reaction kettle. In this step, by providing a motor, a second support shaft, stirring blades and a cleaning scraper, the methyl ester raw material inside the reaction kettle can be stirred when the methyl ester raw material reacts inside the reaction kettle, thereby improving the contact effect between the methyl ester raw material and water, improving the reaction efficiency of the methyl ester raw material, and improving the reaction effect of the methyl ester raw material.

[0010] Preferably, a guiding pipe is fixedly connected to the end of the liquid guide pipe; the end of the guiding pipe faces upward. In this step, by providing a guiding pipe, the end of the liquid guide pipe can be set upward, thereby reducing the situation where steam is poured back into the cooling box from the liquid guide pipe when the heating wire heats water, enabling more steam to enter the steam pipe, and thus reducing the loss of steam when heating the methyl ester raw material.

[0011] Preferably, a guiding plate is fixedly connected to the top of the inner side wall of the cooling box; a guiding groove is formed at the bottom of the inner side wall of the cooling box; the guiding grooves are multiple and are arranged corresponding to the liquid guiding pipes; through the arrangement of the guiding plate and the guiding grooves in this step, the condensed water inside the cooling box can be guided, so that the water can return to the heating box faster, thereby reducing the situation that water remains inside the cooling box.

[0012] Preferably, an observation window is formed in the middle of the cooling box; the observation window is made of a transparent material; scale lines are fixedly connected to the side wall of the observation window; through the arrangement of the observation window and the scale lines in this step, the staff can more conveniently observe the water volume inside the cooling box, thereby reducing the situation that the staff needs to stop the machine and open the cooling box to observe the water volume, thereby improving the continuity of the device during operation, and further improving the production efficiency of the device during the preparation of methyl ester.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. For a steam heating device for methyl ester preparation of the present utility model, by providing a reaction kettle and a feed inlet, the methyl ester raw materials can be reacted. By providing a heating box, heating wires, a cooling box and a steam pipe, the methyl ester raw materials inside the reaction kettle can be heated, so that the methyl ester raw materials react to prepare methyl ester. By providing a cooling box and a liquid guiding pipe, the steam can be condensed and then circulated into the heating box to circulate the steam, reducing the waste of steam and water resources during the preparation of methyl ester.

[0015] 2. For a steam heating device for methyl ester preparation of the present utility model, by providing a first support shaft and a baffle plate, the feed inlet can be closed when the methyl ester raw materials react inside the reaction kettle, thereby reducing the situation that the methyl ester raw materials overflow from the feed inlet during the reaction inside the reaction kettle, and further reducing the loss during the preparation of methyl ester. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present utility model will be further described below with reference to the accompanying drawings.

[0017] Figure 1 is the perspective view of the present utility model;

[0018] Figure 2 is the cross-sectional view of the present utility model;

[0019] Figure 3 is the structural schematic diagram of the reaction kettle of the present utility model;

[0020] Figure 4 is the structural schematic diagram of the cooling box of the present utility model;

[0021] Legend Explanation:

[0022] 1. Reactor; 11. Feed inlet; 12. Heating box; 13. Heating wire; 14. Cooling box; 15. Air duct; 16. Steam pipe; 17. Liquid guide pipe; 2. First support shaft; 21. Baffle plate; 3. Motor; 31. Second support shaft; 32. Stirring blade; 33. Cleaning scraper; 4. Guide pipe; 5. Guide plate; 51. Guide groove; 6. Observation window; 61. Scale line. Detailed implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] The following gives specific embodiments.

[0025] As Figures 1 to 3 shown, a steam heating device for methyl ester preparation according to an embodiment of the present invention includes a reactor 1; a feed inlet 11 is provided at the top of the reactor 1; a heating box 12 is fixedly connected to the bottom of the reactor 1; a heating wire 13 is installed inside the heating box 12; a cooling box 14 is fixedly connected to the top of the reactor 1; an air duct 15 is connected between the heating box 12 and the reactor 1; a steam pipe 16 is provided inside the reactor 1; the steam pipes 16 are multiple and evenly distributed inside the reactor 1; one end of the steam pipe 16 is connected to the air duct 15, and the other end extends into the cooling box 14; a liquid guide pipe 17 is fixedly connected to the bottom of the cooling box 14; the other end of the liquid guide pipe 17 extends into the heating box 12; during operation, the staff introduces the methyl ester raw material into the reactor 1 from the feed inlet 11. At this time, the staff starts the heating wire 13 to heat the water inside the heating box 12. At this time, the water inside the heating box 12 will heat up and turn into steam and move upward, and then move along the reactor 1 through the air duct 15 and the steam pipe 16, thereby heating the methyl ester raw material inside the reactor 1. When the steam moves into the cooling box 14, the steam will condense inside the cooling box 14 and then return to the heating box 12 along the liquid guide pipe 17. This step can react the methyl ester raw material by providing the reactor 1 and the feed inlet 11. By providing the heating box 12, the heating wire 13, the cooling box 14 and the steam pipe 16, the methyl ester raw material inside the reactor 1 can be heated to make the methyl ester raw material react and prepare methyl ester. By providing the cooling box 14 and the liquid guide pipe 17, the steam can be condensed and then circulated into the heating box 12 to circulate the steam, reducing the waste of steam and water resources during methyl ester preparation.

[0026] Furthermore, asFigures 2 to 3 As shown in the figure, a first support shaft 2 is fixedly connected inside the reactor 1; a baffle plate 21 is rotatably connected to the middle of the first support shaft 2; a torsion spring is provided between the baffle plate 21 and the first support shaft 2; the first support shaft 2 is larger than the bottom diameter of the feed inlet 11; during operation, when the staff adds methyl ester raw materials into the reactor 1 from the feed inlet 11, the methyl ester raw materials will push the baffle plate 21 downward, causing the baffle plate 21 to rotate along the first support shaft 2. At this time, the methyl ester raw materials will enter the reactor 1. After the methyl ester raw materials enter the reactor 1, the torsion spring will push the baffle plate 21, and then the baffle plate 21 will close the feed inlet 11. By providing the first support shaft 2 and the baffle plate 21 in this step, the feed inlet 11 can be closed when the methyl ester raw materials react inside the reactor 1, thereby reducing the situation that the methyl ester raw materials overflow from the feed inlet 11 during the reaction inside the reactor 1, and further reducing the loss during the preparation of methyl ester.

[0027] Further, as Figures 2 to 3 shown in the figure, a motor 3 is installed on the top of the reactor 1; a second support shaft 31 is rotatably connected inside the reactor 1; the second support shaft 31 is connected to the output end of the motor 3 through a synchronous belt; a stirring blade 32 is fixedly connected to the middle of the second support shaft 31; there are multiple stirring blades 32 and they are evenly distributed in the middle of the second support shaft 31; a cleaning scraper 33 is fixedly connected to the end of the stirring blade 32; the end of the cleaning scraper 33 is attached to the inner side wall of the reactor 1. By providing the motor 3, the second support shaft 31, the stirring blade 32 and the cleaning scraper 33 in this step, the methyl ester raw materials inside the reactor 1 can be stirred when the methyl ester raw materials react inside the reactor 1, thereby improving the contact effect between the methyl ester raw materials and water, further improving the reaction efficiency of the methyl ester raw materials, and improving the reaction effect of the methyl ester raw materials.

[0028] Further, as Figure 2 shown in the figure, a guiding pipe 4 is fixedly connected to the end of the liquid guiding pipe 17; the end of the guiding pipe 4 is upward. By providing the guiding pipe 4 in this step, the end of the liquid guiding pipe 17 can be set upward, thereby reducing the situation that steam pours back into the cooling box 14 from the liquid guiding pipe 17 when the heating wire 13 heats water, making more steam enter the steam pipe 16, and further reducing the loss when the steam heats the methyl ester raw materials.

[0029] Further, as Figures 2 to 4 shown in the figure, a guiding plate 5 is fixedly connected to the top of the inner side wall of the cooling box 14; a guiding groove 51 is opened at the bottom of the inner side wall of the cooling box 14; there are multiple guiding grooves 51 and they are arranged corresponding to the liquid guiding pipes 17. By providing the guiding plate 5 and the guiding groove 51 in this step, the condensed water inside the cooling box 14 can be guided, so that the water can return to the heating box 12 faster, and further reducing the situation that water remains in the cooling box 14.

[0030] Further, as Figure 1 , Figure 2 and Figure 4 shown, an observation window 6 is provided in the middle of the cooling box 14; the observation window 6 is made of a transparent material; a scale line 61 is fixedly connected to the side wall of the observation window 6; by providing the observation window 6 and the scale line 61 in this step, the staff can more conveniently observe the water volume inside the cooling box 14, thereby reducing the situation where the staff needs to stop the machine and open the cooling box 14 to observe the water volume, thereby improving the coherence of the device during operation, and further improving the production efficiency of the device during the preparation of methyl ester.

[0031] Working principle: The staff introduces the methyl ester raw material into the reaction kettle 1 from the feed inlet 11. At this time, the staff starts the heating wire 13 to heat the water inside the heating box 12. At this time, the water inside the heating box 12 will heat up and turn into steam and move upward, and then move along the reaction kettle 1 through the air duct 15 and the steam pipe 16, so as to heat the methyl ester raw material inside the reaction kettle 1. When the steam moves into the cooling box 14, the steam will condense inside the cooling box 14 and then return to the heating box 12 along the liquid guide pipe 17. When the staff adds the methyl ester raw material into the reaction kettle 1 from the feed inlet 11, the methyl ester raw material will push the baffle 21 downward, causing the baffle 21 to rotate along the first support shaft 2. At this time, the methyl ester raw material will enter the reaction kettle 1. After the methyl ester raw material enters the reaction kettle 1, the torsion spring will push the baffle 21, so that the baffle 21 closes the feed inlet 11.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A steam heating device for preparing methyl ester, comprising a reaction kettle (1); characterized in that: The reactor (1) is provided with a feed port (11) at the top; a heating box (12) is fixedly connected to the bottom of the reactor (1); a heating wire (13) is installed inside the heating box (12); a cooling box (14) is fixedly connected to the top of the reactor (1); an air guide pipe (15) is connected between the heating box (12) and the reactor (1); a steam pipe (16) is provided inside the reactor (1); a plurality of steam pipes (16) are evenly distributed inside the reactor (1); one end of the steam pipe (16) is connected to the air guide pipe (15), and the other end extends into the cooling box (14); a liquid guide pipe (17) is fixedly connected to the bottom of the cooling box (14); the other end of the liquid guide pipe (17) extends into the heating box (12).

2. A steam heating device for preparing methyl ester according to claim 1, characterized in that: A first support shaft (2) is fixedly connected inside the reaction kettle (1); a material baffle plate (21) is rotatably connected to the middle of the first support shaft (2); a torsion spring is provided between the material baffle plate (21) and the first support shaft (2); and the first support shaft (2) is larger than the bottom diameter of the feed port (11).

3. A steam heating device for preparing methyl ester according to claim 2, characterized in that: The end of the liquid guiding tube (17) is fixedly connected to a guide tube (4); the end of the guide tube (4) faces upward.

4. A steam heating device for preparing methyl ester according to claim 3, characterized in that: A guide plate (5) is fixedly connected to the top of the inner wall of the cooling box (14); a guide groove (51) is provided at the bottom of the inner wall of the cooling box (14); and the guide grooves (51) are multiple and are arranged corresponding to the liquid guide tubes (17).

5. A steam heating device for preparing methyl ester according to claim 4, characterized in that: An observation window (6) is provided in the middle of the cooling box (14); the observation window (6) is made of a transparent material; and a scale line (61) is fixedly connected to the side wall of the observation window (6).

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