Condensation heat exchange device and chemical production device

Abstract

The utility model relates to a condensation heat exchange device and chemical industry production device, condensation heat exchange device comprises a heat exchange cylinder and a cold source, the heat exchange cylinder comprises a sealing cover, a cylinder body and a discharge pipe, a cylinder body inlet is communicated with a reactant outlet of a reaction tank, a coil pipe is arranged in the cylinder body, the coil pipe comprises a pipe body, a first outlet pipe and a second outlet pipe, the pipe body is spiral, and the first outlet pipe is communicated with the discharge pipe. The pipe body is provided with a first end and a second end, the first end of the pipe body is communicated with one end of the first lead-out pipe, the second end of the pipe body is communicated with one end of the second lead-out pipe, the other end of the first lead-out pipe extends out of the cylinder, and the other end of the second lead-out pipe extends out of the cylinder; one end of the discharging pipe is communicated with the cylinder body, and the other end of the discharging pipe extends out of the cylinder body; the cold source is communicated with the other end of the first outlet pipe and the other end of the second outlet pipe through a cold source circulating pipeline, and the cold source is used for providing a cooling medium. According to the device provided by the utility model, volatile reactants flowing out of the reaction tank can be quickly and efficiently condensed, and condensed products can be collected.

Description

Technical Field

[0001] The utility model relates to a condensation heat exchange device and a chemical production device. Background Art

[0002] With the continuous development of science and technology, material synthesis and preparation technology has also made great progress. In the process of material preparation, the collection, treatment, separation, and purification of various products or volatile materials in chemical reactions are crucial. Traditional collection methods often have problems such as cumbersome operation, low efficiency, and environmental pollution, and cannot meet the high efficiency, high precision, and environmental protection requirements of modern material preparation. Utility Model Content

[0003] The utility model aims to provide a condensation heat exchange device and a chemical production device.

[0004] In order to achieve the above object, a technical solution adopted by the utility model is:

[0005] A condensing heat exchange device, comprising:

[0006] A heat exchange cylinder, wherein the heat exchange cylinder comprises a cylinder body, a sealing cover, and a discharge pipe. The sealing cover is arranged on the top of the cylinder body for sealing the cylinder body, and the inlet of the cylinder body is connected to the reactant outlet of the reaction tank; a coil is arranged in the cylinder body, and the coil comprises a tube body, a first lead-out pipe, and a second lead-out pipe. The tube body is spiral-shaped, and the tube body has a first end and a second end. The first end of the tube body is connected to one end of the first lead-out pipe, and the second end of the tube body is connected to one end of the second lead-out pipe. The other end of the first lead-out pipe extends to the outside of the cylinder, and the other end of the second lead-out pipe extends to the outside of the cylinder; one end of the discharge pipe is connected to the cylinder body, and the other end of the discharge pipe extends to the outside of the cylinder;

[0007] A cold source is connected to the other end of the first outlet pipe and the other end of the second outlet pipe through a cold source circulation pipeline, and the cold source is used to provide a cooling medium.

[0008] In some embodiments, the other end of the second outlet pipe and the other end of the first outlet pipe are both located below the cylinder and on the same side, and the first outlet pipe is arranged in parallel with the second outlet pipe.

[0009] In some embodiments, the cylinder includes an inner cylinder and an outer cylinder, the inner cylinder is arranged in the outer cylinder, a thermal insulation interlayer is formed between the inner cylinder and the outer cylinder, and the pipe body is located in the inner cylinder.

[0010] In some embodiments, the outer cylinder includes a first section and a second section that are connected, the first section is located on the second section, the first section is cylindrical, and the second section is elliptical; the bottom of the second section is provided with two openings and one through-hole, the two openings are respectively used for the first lead-out tube and the second lead-out tube to extend out, and the through-hole is used for the discharge pipe to pass through.

[0011] In some embodiments, the inner cylinder includes a first cylinder and a second cylinder connected to each other, the first cylinder is cylindrical, and the second cylinder is elliptical; the bottom of the second cylinder is provided with two openings and one through-hole, the two openings are respectively used for allowing the first lead-out tube and the second lead-out tube to extend out, and the through-hole is used for allowing the discharge pipe to pass through.

[0012] In some embodiments, the sealing cover includes a first cover body and a second cover body, the first cover body is arranged on the second cover body, the first cover body includes a main body, a first protrusion and a second protrusion, the first protrusion and the second protrusion are both arranged on the lower side of the main body and extend away from the upper side of the main body; a positioning hole for inserting the first protrusion is provided in the middle part of the second cover body, and a groove matching the second protrusion is also provided on the second cover body.

[0013] In some embodiments, the condensing heat exchange device further includes a plurality of support columns for supporting the heat exchange tube, wherein the support columns extend in a vertical direction, the upper ends of the support columns are connected to the heat exchange tube, and the lower ends of the support columns are against the ground.

[0014] Another technical solution adopted by the utility model is:

[0015] A chemical production device comprises the condensation heat exchange device, a reaction tank, a condenser, and a reflux tank. The reaction tank, the condenser, and the reflux tank are connected through a circulation pipeline, and the reflux tank is connected to the cylinder of the condensation heat exchange device.

[0016] In some embodiments, a stirring shaft is disposed in the reaction tank, the stirring shaft extends in a vertical direction, a first paddle is disposed on the stirring shaft, the first paddle includes a first part and a second part connected to each other, the first part is located on the second part, the first part is square, and the second part is wide at the top and narrow at the bottom.

[0017] In some embodiments, the stirring shaft is further provided with a second blade along its axial direction, the second blade is located above the first blade, and the second blade is arranged perpendicular to the stirring shaft.

[0018] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0019] The condensation heat exchange device provided by the utility model can quickly and efficiently condense the volatile reactants flowing out of the reaction tank by setting a heat exchange cylinder and a cold source, and collect the condensed products. The chemical production device provided by the utility model first condenses the volatile reactants through a condenser, and then further condenses them through a condensation heat exchange device, thereby preventing the volatile reactants from entering the atmosphere or subsequent devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Attached Figure 1 A structural diagram of the condensing heat exchange device provided by the utility model;

[0021] Attached Figure 2 A structural diagram of a chemical production device provided by the utility model;

[0022] Attached Figure 3 A structural diagram of a reaction tank of a chemical production device provided by the utility model;

[0023] Attached Figure 4 A structural diagram of a stirring shaft, a first blade and a second blade of a chemical production device provided by the utility model;

[0024] Attached Figure 5 This is a structural diagram of Example 3.

[0025] In the above attached figure:

[0026] 1-condensing heat exchange device, 100-first protrusion, 101-outer cylinder, 1011-first section, 1012-second section, 102-inner cylinder, 1021-first cylinder, 1022-second cylinder, 103-insulating interlayer, 104-first cover, 105-second cover, 106-discharging valve, 107-tube body, 108-first outlet pipe, 109-second outlet pipe, 110-second protrusion, 119-support column;

[0027] 2-vacuum buffer tank, 21-vacuum pressure gauge, 22-discharging valve, 23-first flange pipe; 3-vacuum pump, 31-connecting pipe, 32-exhaust pipe;

[0028] 4-compressor, 41-liquid inlet pipe, 42-liquid outlet pipe; 5-expansion throttle valve;

[0029] 6-cooler, 61-tube body, 62-fourth flange tube, 63-second guide tube, 64-fifth flange tube, 65-first guide tube, 66-shell;

[0030] 7-heat transfer medium circulation pump; 8-control valve;

[0031] 9-intermediate tank for heat transfer medium, 91-discharge valve, 92-tank body, 93-upper head, 94-lower head;

[0032] 11-reaction device, 111-sixth flange tube, 112-seventh flange tube, 113-eighth flange tube, 114-reaction tank, 115-stirring shaft, 116-first blade, 1161-first part, 1162-second part, 117-second blade, 118-jacket;

[0033] 12-connecting pipe; 13-vent pipe; 14-three-way valve; 15-feed hollow screw; 16-reflux tank; 17-reflux pipeline; 18-condenser; 19-cold source. DETAILED DESCRIPTION

[0034] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] Example 1

[0037] See also Figure 1 , a condensing heat exchange device 1 is provided, comprising a heat exchange cylinder and a cold source 19, wherein:

[0038] The heat exchange cylinder includes a sealing cover, a cylinder body, and a discharge pipe. The sealing cover is arranged on the top of the cylinder body for sealing the cylinder body; the cylinder body includes an inner cylinder body 102 and an outer cylinder body 101, the inner cylinder body 102 is arranged in the outer cylinder body 101, and a thermal insulation interlayer 103 is formed between the inner cylinder body 102 and the outer cylinder body 101, and the thermal insulation interlayer 103 forms an insulating layer by vacuuming; the inlet of the cylinder body is connected to the reactant outlet of the reaction tank 114 (volatile reactants flow out of the outlet); the inner cylinder body 102 has a accommodating space, and a coil is arranged in the inner cylinder body 102; one end of the discharge pipe is connected to the inner cylinder body 102, and the other end of the discharge pipe extends to the outside of the outer cylinder body 101.

[0039] See also Figure 1 The coil includes a tube body 107, a first outlet pipe 108, and a second outlet pipe 109. The tube body 107 is located in the inner cylinder 102. The tube body 107 has a first end and a second end. The first end of the tube body 107 is connected to one end of the first outlet pipe 108, and the second end of the tube body 107 is connected to one end of the second outlet pipe 109. The other end of the first outlet pipe 108 extends to the outside of the outer cylinder 101 and is connected to the cold source 19. The other end of the second outlet pipe 109 extends to the outside of the outer cylinder 101 and is connected to the cold source 19.

[0040] In a preferred embodiment, the tube body 107 is spiral-shaped and has a high condensation efficiency. It can instantly condense the rapidly flowing volatile organic matter thereon, thereby better ensuring that no volatile gas subsequently invades the atmosphere or subsequent devices (such as vacuum devices); the other end of the second outlet pipe 109 and the other end of the first outlet pipe 108 are both located below the outer cylinder 101 and on the same side, and the first outlet pipe 108 and the second outlet pipe 109 are arranged in parallel to facilitate the cooling medium to flow into and out of the coil.

[0041] The cold source 19 is connected to the other end of the first outlet pipe 108 and the other end of the second outlet pipe 109 through a cold source 19 circulation pipeline. The cold source 19 is used to provide a cooling medium. Figure 1 The cold source 19 is connected to the other end of the first outlet pipe 108 through a pipeline, and the cold source 19 is connected to the other end of the second outlet pipe 109 of the coil through a pipeline, that is, the cooling medium (low temperature) enters the tube body 107 of the coil through the first outlet pipe 108, and exchanges heat with the volatile reactants (high temperature) entering the inner cylinder 102, so that the reactants are quickly condensed into liquid, and then can be discharged through the discharge pipe. The cooling medium after heat exchange returns to the cold source 19 through the second outlet pipe 109 to realize a circulation operation.

[0042] In some embodiments, the cold source 19 may be a refrigerator including a refrigeration compressor.

[0043] See also Figure 1 The outer cylinder 101 includes a first section 1011 and a second section 1012 connected to each other. The first section 1011 is located on the second section 1012. The first section 1011 is cylindrical and the second section 1012 is elliptical. The bottom of the second section 1012 is provided with two openings and a through hole. The two openings are respectively used for the first lead-out tube 108 and the second lead-out tube 109 to extend out, and the through hole is used for the discharge tube to pass through. The two openings are symmetrically arranged around the center of the outer cylinder 101, and the through hole is located between the two openings.

[0044] The inner cylinder 102 includes a first cylinder 1021 and a second cylinder 1022 connected to each other. The first cylinder 1021 is cylindrical and the second cylinder 1022 is elliptical. The bottom of the second cylinder 1022 is provided with two openings and a through hole. The two openings are respectively used for the first lead-out tube 108 and the second lead-out tube 109 to extend out, and the through hole is used for the discharge tube to pass through. The two openings are symmetrically arranged around the center of the inner cylinder 102, and the through hole is located between the two openings.

[0045] The sealing cover includes a first cover body 104 and a second cover body 105. The first cover body 104 is arranged on the second cover body 105. The first cover body 104 includes a main body, a first protrusion 100 and a second protrusion 110. The first protrusion 100 and the second protrusion 110 are both arranged on the lower side of the main body and extend away from the upper side of the main body. The first protrusion 100 is located in the middle of the first cover body 104 compared with the second protrusion 110. The outer diameter of the first protrusion 100 is smaller than the outer diameter of the first cover body 104, and the outer diameter of the first protrusion 100 is larger than the outer diameter of the second protrusion 110. A plurality of second protrusions 110 can be arranged, and the plurality of second protrusions 110 are circumferentially arranged around the lower side of the first cover body 104; two internal threaded holes (located at symmetrical positions of the radial line) are opened on the upper side of the main body to facilitate the connection of the hydraulic lifting device.

[0046] A positioning hole for inserting the first protrusion 100 is provided in the middle of the second cover body 105 , and a groove matching the second protrusion 110 is also provided on the second cover body 105 . Correspondingly, a plurality of grooves can be provided, and the plurality of grooves are circumferentially arranged around the upper side of the second cover body 105 .

[0047] The condensing heat exchange device 1 also includes a plurality of support columns 119 for supporting the heat exchange tube. The support columns 119 extend in the vertical direction. The upper ends of the support columns 119 are connected to the heat exchange tube. The lower ends of the support columns 119 are against the ground. The support columns 119 are provided to improve the support strength of the heat exchange tube. Furthermore, a reinforcement is provided between two adjacent support columns 119. The reinforcement can be a round tube or a square tube to enhance the support of the heat exchange tube. A support plate can be welded to the lower end of the support column. The support plate is square or round.

[0048] Example 2

[0049] The present example provides a chemical production device, including a condensing heat exchange device 1, a reaction tank 114, a reflux tank 16, and a condenser 18. The reaction tank 114, the condenser 18, and the reflux tank 16 are connected through a circulation pipeline, that is, the reaction tank 114 is connected to the condenser 18 through a pipeline, the condenser 18 is connected to the reflux tank 16 through a pipeline, the reflux tank 16 is connected to the reaction tank 114 through a pipeline, and the reflux tank 16 is connected to the inner cylinder 102 of the condensing heat exchange device 1. After the volatile reactants flow out of the reaction tank 114, they are first condensed by the condenser 18, and the condensed products enter the reflux tank 16. The condensed liquid refluxes into the reaction tank 114, and the uncondensed reactant gas enters the inner cylinder 102 of the condensing heat exchange device 1 for condensation.

[0050] In another embodiment, the mouth of the reaction tank 114 is connected to the inlet of the condenser 18 through a pipeline, the outlet of the condenser 18 is connected to the reaction tank 114 through the reflux pipeline 17, and the reflux tank 16 is connected to the reflux pipeline 17, that is, the volatile reactants are first condensed through the condenser 18 after flowing out of the reaction tank 114, and the condensed liquid can directly enter the reaction tank 114 (or reflux into the reflux tank 16, there are two ways to achieve this), and the uncondensed reactant gas then enters the inner cylinder 102 of the condensation heat exchange device 1 for condensation.

[0051] In this example, a stirring shaft 115 is provided in the reaction tank 114, and the stirring shaft 115 extends in the vertical direction. A first paddle 116 is provided on the stirring shaft 115. The first paddle 116 is in a ring shape, such as a polygonal ring shape. The first paddle 116 includes a first part 1161 and a second part 1162 that are connected. The first part 1161 is located on the second part 1162. The first part 1161 is square, and the second part 1162 is wide at the top and narrow at the bottom (the width of the second part gradually decreases from the top to the bottom). This arrangement facilitates stirring to ensure sufficient reaction.

[0052] In a preferred embodiment, a second paddle 117 is further provided on the stirring shaft 115. The second paddle 117 is located above the first paddle 116. The second paddle 117 and the first paddle 116 are distributed axially along the stirring shaft 115. The second paddle 117 is horizontally arranged. The second paddle 117 and the stirring shaft 115 are vertically arranged, such as a rod, to further enhance the stirring so that the reactants are fully mixed.

[0053] Example 3

[0054] See also Figure 5This example provides a chemical production device, including a reaction device 11, a condenser 18, a reflux tank 114, a condensation heat exchange device 1, a cooler 6, a compressor 4, and a vacuum device. The reaction device 11 includes a reaction tank 114, and a reactant outlet is opened on the reaction tank 114. The reactant is a volatile organic compound. A jacket 118 is arranged outside the reaction tank 114. The jacket 118 has a heat transfer medium inlet and a heat transfer medium outlet. The heat transfer medium flows in and out of the jacket 118, and the heat transfer medium is used to heat the reactant in the reaction tank 114; the reaction tank 114 is connected to the condenser 18 through a pipeline, the condenser 18 is connected to the reflux tank 16 through a pipeline, the reflux tank 16 is connected to the reaction tank 114 through a pipeline, and the reflux tank 16 is connected to the condensation heat exchange device 1.

[0055] The condensing heat exchange device 1 includes a heat exchange tube, in which a coil is arranged, and the coil has a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet of the coil are both located outside the heat exchange tube and are both located below the heat exchange tube (located on the same side), and the inlet of the heat exchange tube of the condensing heat exchange device 1 is connected with the reactant outlet of the reaction tank 114 through a pipeline; the cooler 6 includes a shell 66, and the inlet of the shell 66 is connected with the heat transfer medium outlet of the jacket 118 through a pipeline, and the outlet of the shell 66 is connected with the heat transfer medium inlet of the jacket 118 through a pipeline, and the shell 66 is arranged inside the shell 66, and the heat exchange coil has a refrigerant inlet and a refrigerant outlet, and the refrigerant inlet and the refrigerant outlet of the heat exchange coil are both located outside the shell 66 and are both located on the same side outside the shell 66. The compressor 4 is connected to the refrigerant inlet of the heat exchange coil and the liquid outlet of the coil, that is, the outlet of the compressor 4 and the refrigerant inlet of the heat exchange coil, the refrigerant outlet of the heat exchange coil and the liquid inlet of the coil, and the liquid outlet of the coil and the inlet of the compressor 4 are connected through a refrigerant circulation pipeline. An expansion throttle valve 5 is provided on the pipeline connecting the refrigerant outlet of the heat exchange coil and the liquid inlet of the coil. The compressor 4 is used to pressurize the refrigerant so that the refrigerant becomes a high-temperature and high-pressure gas and then enters the heat exchange coil through the liquid outlet pipe 42. Heat exchange is performed between the refrigerant vapor and the heat transfer medium, and condensation reduces the temperature of the refrigerant vapor and then turns it into a high-pressure liquid refrigerant. The pressure of the high-pressure liquid refrigerant is then reduced through the expansion throttle valve 5 and enters the coil.

[0056] In this example, the heat transfer medium flows out from the heat transfer medium outlet of the jacket 118 to the shell 66 of the cooler 6, and the high-temperature and high-pressure refrigerant gas enters the heat exchange coil through the liquid outlet pipe 42 to exchange heat with the heat transfer medium in the shell 66, and the heat transfer medium absorbs the heat released by the high-temperature and high-pressure refrigerant. The heat transfer medium that has absorbed the heat then enters the jacket 118 through the heat transfer medium inlet of the jacket 118, thereby achieving the goal of heat recovery and reuse; the high-pressure liquid refrigerant coming out of the heat exchange coil of the cooler 6 is converted into a low-pressure liquid refrigerant by the expansion throttle valve 5 and enters the coil in the condensing heat exchange device 1 (the volatile reactants remaining in the reaction tank enter the heat exchange cylinder of the condensing heat exchange device 1), and the low-pressure liquid refrigerant absorbs the heat from the volatile organic matter remaining in the reaction tank and causes it to condense, forming a secondary collection, thereby making the collection rate of the volatile reactants (organic matter) of the chemical synthesis reaction device 11 reach more than 99.99%, which not only protects the subsequent operating equipment (such as vacuum pumps, etc.), but also protects the environment. The high-temperature refrigerant (the low-pressure refrigerant liquid becomes the high-temperature refrigerant after absorbing the heat of the volatile organic matter) flowing out from the coil outlet of the condensing heat exchange device 1 enters the compressor 4 through the liquid inlet pipe 41. The refrigerant can be recycled to realize the recycling of the heat of the compressor 4 system, achieving the effect of energy saving.

[0057] The function of the cooler 6 in this example is as follows: the refrigerant pressurized by the compressor 4 becomes a high-temperature and high-pressure gas and enters the heat exchange coil through the liquid outlet pipe 42, and the heat transfer medium enters the shell 66, and heat exchange is carried out in the cooler 6, which is equivalent to preheating the heat transfer medium, so that the high-temperature and high-pressure refrigerant is cooled, achieving the goal of heat recovery and reuse; the cooled refrigerant comes out from the outlet of the heat exchange coil and enters the expansion throttle valve 5.

[0058] The coil includes a pipe body 107, a first outlet pipe 108, and a second outlet pipe 109. The pipe body 107 is located in the inner cylinder 102. The pipe body 107 has a first end and a second end. The first end of the pipe body 107 is connected to one end of the first outlet pipe 108, and the second end of the pipe body 107 is connected to one end of the second outlet pipe 109. The other end of the first outlet pipe 108 extends to the outside of the outer cylinder 101 and is connected to the expansion throttle valve 5. The other end of the second outlet pipe 109 extends to the outside of the outer cylinder 101 and is connected to the compressor 4. The pipe body 107 is spiral.

[0059] See also Figure 5The shell 66 of the cooler 6 in this example is cylindrical and cubic; the heat exchange coil includes a tube body 61, a first lead pipe 65, and a second lead pipe 63. The tube body 61 has a first end and a second end. The tube body 61 is located in the shell 66. The first end of the tube body 61 is connected to one end of the first lead pipe 65, and the second end of the tube body 61 is connected to one end of the second lead pipe 63. The other end of the first lead pipe 65 extends to the outside of the shell 66 and is connected to the compressor 4 through the liquid outlet pipe 42. The other end of the second lead pipe 63 extends to the outside of the shell 66 and is connected to the expansion throttle valve 5. The other end of the first lead pipe 65 is the refrigerant inlet, and the other end of the second lead pipe 63 is the refrigerant outlet; the first lead pipe 65 and the second lead pipe 63 are arranged in parallel.

[0060] In some embodiments, the system further includes a heat transfer medium intermediate tank 9, which is connected to the heat transfer medium inlet of the jacket 118 and the outlet of the shell 66. The heat transfer medium can be buffered in the heat transfer medium intermediate tank 9, and whether to transport the heat transfer medium to the jacket outside the reaction tank can be selected according to the temperature inside the reaction tank.

[0061] See also Figure 5 The heat transfer medium intermediate tank 9 includes a tank body 92, an upper head 93 and a lower head 94. The tank body 92 is cylindrical. The upper head 93 and the lower head 94 are respectively arranged at the upper end and the lower end of the tank body 92. The cross-sections of the upper head 93 and the lower head 94 are both elliptical. A discharge pipe connected to the tank body 92 is arranged on the lower side of the lower head 94. A discharge valve 91 is arranged on the discharge pipe, and the heat transfer medium in the tank body 92 can flow out through the discharge valve 91; a flange pipe connected to the jacket is arranged on the outside of one side of the tank body 92, and a flange pipe connected to the control valve 8 is arranged on the outside of the upper head 93.

[0062] In some embodiments, the system further includes a heat transfer medium circulation pump 7, which is disposed in a pipeline connecting the heat transfer medium outlet of the jacket 118 of the reaction device 11 and the shell inlet, and the function of the heat transfer medium circulation pump 7 is to pump the heat transfer medium in the jacket 118 into the cooler 6 for heat exchange and heat recovery. The cooler 6 is connected to the heat transfer medium circulation pump 7 through a fourth flange pipe 62.

[0063] In some embodiments, a control valve 8 is provided on the pipeline connecting the heat transfer medium intermediate tank 9 and the shell outlet, and the function of the control valve 8 is to control the flow rate of the heat transfer medium flowing out of the shell into the heat transfer medium intermediate tank 9 to ensure the cooling effect of the refrigerant. The cooler 6 and the control valve 8 are connected through a fifth flange pipe 64.

[0064] The device of this example also includes a sixth flange pipe 111 connected to the heat transfer medium circulation pump 7 , a seventh flange pipe 112 connected to the condensation heat exchange device 1 , and an eighth flange pipe 113 connected to the heat transfer medium intermediate tank 9 .

[0065] The vacuum device is connected to the condensation heat exchange device 1 , and the vacuum device includes a vacuum buffer tank 2 and a vacuum pump 3 . The vacuum buffer tank 2 is connected to the condensation heat exchange device 1 , and the vacuum pump 3 is connected to the vacuum buffer tank 2 through a connecting pipe 31 .

[0066] In some embodiments, the system further includes a connecting pipe 12, a venting pipe 13, and an exhaust pipe 32. One end of the connecting pipe 12 is connected to the shell, and the other end of the connecting pipe 12 and one end of the venting pipe 13 are connected to the vacuum buffer tank 2 through a three-way valve 14. The other end of the venting pipe 13 is connected to the atmosphere. The function of the connecting pipe 12 is to close, connect to the vacuum system or vent; the function of the venting pipe 13 is to vent. One end of the exhaust pipe 32 is connected to the vacuum pump 3, and the other end of the exhaust pipe 32 is connected to the atmosphere.

[0067] In the chemical production device of this example, the volatile reactants are first condensed through the condenser 18 after flowing out of the reaction tank 114, and the condensed products enter the reflux tank 16. The condensed liquid refluxes into the reaction tank 114, and the uncondensed reactant gas enters the inner cylinder 102 of the condensation heat exchange device 1 for rapid condensation to prevent the gas from entering the vacuum device.

[0068] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A condensing heat exchange device, characterized in that: include: A heat exchange cylinder, wherein the heat exchange cylinder comprises a sealing cover, a cylinder body, and a discharge pipe, wherein the sealing cover is arranged on the top of the cylinder body for sealing the cylinder body; the inlet of the cylinder body is connected with the reactant outlet of the reaction tank, a coil is arranged in the cylinder body, and the coil comprises a tube body, a first lead-out pipe, and a second lead-out pipe, wherein the tube body is spiral-shaped, and the tube body has a first end and a second end, wherein the first end of the tube body is connected with one end of the first lead-out pipe, and the second end of the tube body is connected with one end of the second lead-out pipe, and the other end of the first lead-out pipe extends outside the cylinder body, and the other end of the second lead-out pipe extends outside the cylinder body; One end of the discharge pipe is connected to the cylinder, and the other end of the discharge pipe extends outside the cylinder; A cold source is connected to the other end of the first outlet pipe and the other end of the second outlet pipe through a cold source circulation pipeline, and the cold source is used to provide a cooling medium.

2. The condensing heat exchange device according to claim 1, characterized in that: The other end of the second outlet pipe and the other end of the first outlet pipe are both located below the cylinder and on the same side, and the first outlet pipe is arranged in parallel with the second outlet pipe.

3. The condensing heat exchange device according to claim 1, characterized in that: The cylinder comprises an inner cylinder and an outer cylinder. The inner cylinder is arranged in the outer cylinder. A heat-insulating interlayer is formed between the inner cylinder and the outer cylinder. The pipe body is located in the inner cylinder.

4. The condensing heat exchange device according to claim 3, characterized in that: The outer cylinder includes a first section and a second section that are connected, the first section is located on the second section, the first section is cylindrical, and the second section is elliptical; the bottom of the second section is provided with two openings and a through hole, the two openings are respectively used for the first lead-out tube and the second lead-out tube to extend out, and the through hole is used for the discharge pipe to pass through.

5. The condensing heat exchange device according to claim 3, characterized in that: The inner cylinder includes a first cylinder and a second cylinder connected to each other, the first cylinder is cylindrical, and the second cylinder is elliptical; the bottom of the second cylinder is provided with two openings and a through hole, the two openings are respectively used for the first lead-out tube and the second lead-out tube to extend out, and the through hole is used for the discharge tube to pass through.

6. The condensing heat exchange device according to claim 1, characterized in that: The sealing cover includes a first cover body and a second cover body, the first cover body is arranged on the second cover body, the first cover body includes a main body, a first protrusion and a second protrusion, the first protrusion and the second protrusion are both arranged on the lower side of the main body and extend away from the upper side of the main body; a positioning hole for inserting the first protrusion is provided in the middle of the second cover body, and a groove matching the second protrusion is also provided on the second cover body.

7. The condensing heat exchange device according to claim 1, characterized in that: The condensing heat exchange device further comprises a plurality of supporting columns for supporting the heat exchange tube, wherein the supporting columns extend in a vertical direction, the upper ends of the supporting columns are connected to the heat exchange tube, and the lower ends of the supporting columns are against the ground.

8. A chemical production device, characterized in that: It comprises the condensing heat exchange device, reaction tank, condenser and reflux tank as described in any one of claims 1 to 7, wherein the reaction tank, condenser and reflux tank are connected through a circulation pipeline, and the reflux tank is connected to the cylinder of the condensing heat exchange device.

9. The chemical production device according to claim 8, characterized in that: A stirring shaft is arranged in the reaction tank, the stirring shaft extends in a vertical direction, a first paddle is arranged on the stirring shaft, the first paddle includes a first part and a second part connected to each other, the first part is located on the second part, the first part is square, and the second part is wide at the top and narrow at the bottom.

10. The chemical production device according to claim 9, characterized in that: The stirring shaft is also provided with a second paddle, the second paddle is located above the first paddle, and the second paddle is vertically arranged to the stirring shaft.

Images