A rectification coupling device

Abstract

This utility model relates to the field of chemical production technology, specifically a distillation coupling device, including a main body comprising a No. 1 reactor, a No. 2 reactor connected to one side of the No. 1 reactor, a No. 3 reactor connected to one side of the No. 2 reactor, and a No. 4 reactor connected to one side of the No. 3 reactor. A condensation structure includes a waste gas discharge pipe fixedly installed at the top of the No. 2 reactor. A thermal coupling structure includes a heat-conducting inner liner fixedly installed at the bottom of the No. 2 and No. 3 reactors. In this utility model, the heat-conducting inner liners at the bottom of the No. 2 and No. 3 reactors are connected together to form a relatively integrated whole, achieving thermal coupling. Through thermal integration, the heat from one tower is used for the operation of the other tower, reducing external energy consumption, avoiding excessive changes in the thermal environment, lowering energy consumption while improving product quality.

Description

Technical Field

[0001] This utility model relates to the field of chemical production technology, specifically a distillation coupling device. Background Technology

[0002] Low-VOC terminal hydrogen silicone oil is a type of terminal hydrogen silicone oil product with low volatile organic compound (VOC) content. It has multiple applications, including polyurethane resin synthesis and modification, silicone resin modification, polyester resin synthesis, two-component PU baking paint and amino baking paint, and fabric treatment.

[0003] In the production process, octamethyltetrasiloxane and hydrogen-containing dual-terminated silicone oil are mixed, concentrated sulfuric acid is added, and the mixture is reacted at 30-45°C to obtain hydrogen-terminated silicone oil. Sodium carbonate is added for neutralization, and the mixture is filtered and then vacuumed at high temperature to remove low-cyclic compounds. The low-cyclic end-hydrogen-containing silicone oil is mixed with allyl epoxy polyether, chloroplatinic acid is added, and the mixture is reacted at 100-120°C to obtain dual-epoxy end-terminated polyether silicone oil. Finally, it is reacted with low molecular weight amine ether to obtain low-VOC silicone oil. This process requires multiple reactor transfers and involves heating structures in several steps, resulting in extremely high energy consumption. Utility Model Content

[0004] The purpose of this invention is to provide a distillation coupling device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A distillation coupling device, comprising:

[0007] The main body of the equipment includes a No. 1 reactor, a No. 2 reactor connected to one side of the No. 1 reactor, a No. 3 reactor connected to one side of the No. 2 reactor, and a No. 4 reactor connected to one side of the No. 3 reactor.

[0008] The condensation structure includes an exhaust pipe, which is fixedly installed on the top of the No. 2 reactor.

[0009] The thermal coupling structure includes a heat-conducting inner liner, which is fixedly installed at the bottom of reactor No. 2 and reactor No. 3.

[0010] Furthermore, the bottom of the No. 1 reactor and the upper edge of the side surface of the No. 2 reactor are connected to each other through the No. 1 conveying pipe, the bottom of the heat-conducting inner liner installed below the No. 3 reactor and the upper edge of the side surface of the No. 4 reactor are connected to each other through the No. 1 conveying pipe, and a conveying pump is fixedly connected to the middle of the No. 1 conveying pipe.

[0011] Furthermore, a condenser is fixedly connected to the middle of the exhaust pipe, a coolant inlet is fixedly installed at one end of the upper side of the condenser, and a coolant outlet is fixedly installed at the other end of the bottom side of the condenser. The coolant inlet and the coolant outlet are connected to each other through a spiral ring pipe installed inside the condenser, and one end of the coolant outlet is connected to the upper side of the No. 3 reaction vessel.

[0012] Furthermore, a condensate discharge pipe is fixedly installed at the bottom of the condenser, and a condensate return pipe is fixedly installed at the lower end of the condensate discharge pipe. One end of the condensate return pipe is connected to the top of the No. 1 reaction vessel.

[0013] Furthermore, a heat insulation shell is fixedly sleeved on the outer surface of the heat-conducting inner liner, and a heating resistor is wound around the heat insulation shell and the heat-conducting inner liner. The upper ends of the two sets of heating resistors are connected to each other through a connecting bridge. A first power interface is fixedly installed on the front side of the connecting bridge, and a second power interface is fixedly installed on the lower ends of the two sets of heating resistors.

[0014] Furthermore, the bottom of the heat insulation shell and the heat-conducting inner liner are connected to the side surface of the No. 3 reactor through the No. 2 feed pipe, a filter is fixedly connected in the middle of the No. 2 feed pipe, and a feed pump is fixedly connected in the middle of the No. 2 feed pipe.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In reactor No. 1, octamethyltetrasiloxane (DMC) and hydrogen-containing double-ended HMM are mixed in a certain proportion, and concentrated sulfuric acid is added as a catalyst. The mixture is reacted at 30-45℃ to obtain low-VOC hydrogen-containing silicone oil. After the reaction, the mixture is introduced into reactor No. 2, where sodium carbonate is added for neutralization. The heat-conducting inner liner is heated to 100-120℃ to remove low-boiling-point substances. The exhaust gas is condensed by the condenser structure and then discharged into the workshop's main process exhaust pipe through the exhaust pipe. After removing low-boiling-point substances, the neutralized low-cyclic hydrogen-containing silicone oil is introduced into reactor No. 3 and mixed with allyl epoxy polyether. The mixture is reacted at 100-120℃ for 3- After 6 hours, double-epoxy-terminated polyether silicone oil was obtained. Finally, the double-epoxy-terminated polyether silicone oil was introduced into reactor No. 4 to react with low molecular weight amine ethers to produce low-VOC silicone oil. The heat-conducting inner liner at the bottom of reactors No. 2 and No. 3 were connected together to form a relatively whole, realizing thermal coupling. Through thermal integration, the heat of one tower is used for the operation of another tower, reducing the consumption of external energy. When the material is transferred from reactor No. 2 to reactor No. 3, it can preheat the interior of reactor No. 3 in advance and avoid excessive changes in the thermal environment, thereby reducing energy consumption and improving the quality of the finished product.

[0017] 2. The room-temperature allyl epoxy polyether liquid is supplied to the pipeline and the coolant inlet, and then introduced into the spiral ring pipe inside the condenser as coolant to cool the exhaust gas flowing in the exhaust pipe and condense the vapor in the gas. The condensate is then fed back into the No. 1 reactor through the condensate return pipe for reuse in the synthesis process, thereby improving and reducing material consumption. At the same time, the allyl epoxy polyether liquid, as coolant, absorbs the temperature in the exhaust gas and preheats it to a certain extent, reducing the energy consumption of the reaction in the No. 3 reactor.

[0018] 3. While connecting the two sets of heat-conducting inner tanks into one unit, the two sets of heating resistors are also connected into one structure through a connecting bridge. The No. 1 power interface is connected to the power supply. The No. 2 power interface is connected to the side where the main heat-conducting inner tank is working, and heating is carried out. At the same time, the thermal conductivity of the heat-conducting inner tank is used to heat the other heat-conducting inner tank. When both heat-conducting inner tanks are working at the same time, the No. 1 power interface is not powered, and both sets of No. 2 power interfaces are connected at the same time to heat both heat-conducting inner tanks. The neutralized low-ring end hydrogen-containing silicone oil in the No. 2 reactor is filtered and purified through the No. 2 feed pipe and then fed into the No. 3 reactor. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the condensation structure in this utility model;

[0021] Figure 3 This is a schematic diagram of the thermal coupling structure in this utility model;

[0022] Figure 4 This is a schematic diagram of the thermal coupling structure in this utility model.

[0023] In the diagram: 1. Main body of the equipment; 101. Reactor No. 1; 102. Feed pipe No. 1; 103. Feed pump; 104. Reactor No. 2; 105. Reactor No. 3; 106. Reactor No. 4; 2. Condensation structure; 201. Exhaust gas discharge pipe; 202. Condenser; 203. Coolant inlet; 204. Coolant outlet; 205. Condensate discharge pipe; 206. Condensate return pipe; 3. Thermal coupling structure; 301. Insulation shell; 302. Thermally conductive inner liner; 303. Heating resistor; 304. Connecting bridge; 305. Power interface No. 1; 306. Power interface No. 2; 307. Feed pipe No. 2; 308. Filter. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 In this embodiment of the present invention, a distillation coupling device includes a main body 1, which includes a first reactor 101, a second reactor 104 connected to one side of the first reactor 101, a third reactor 105 connected to one side of the second reactor 104, and a fourth reactor 106 connected to one side of the third reactor 105; a condensation structure 2 includes a waste gas discharge pipe 201, which is fixedly installed on the top of the second reactor 104; and a thermal coupling structure 3 includes a heat-conducting inner liner 302, which is fixedly installed on the bottom of the second reactor 104 and the third reactor 105.

[0026] Specifically, in reactor 101, octamethyltetrasiloxane (DMC) and hydrogen-containing dual-headed silicone oil are mixed in a certain proportion, and concentrated sulfuric acid is added as a catalyst. The mixture is reacted at 30-45°C to produce low-VOC hydrogen-containing silicone oil. After the reaction, the mixture is introduced into reactor 104, where sodium carbonate is added for neutralization. The heat-conducting inner liner 302 is heated to 100-120°C to remove low-boiling-point substances. The exhaust gas is condensed by condenser 2 and then discharged into the workshop's process exhaust gas main through exhaust pipe 201. After removing low-boiling-point substances, the neutralized low-cyclic hydrogen-containing silicone oil is introduced into reactor 105 and mixed with allyl epoxy polyether. The mixture is reacted at 100-120°C for 3-6 seconds. After hours, double-epoxy-terminated polyether silicone oil is obtained. Finally, the double-epoxy-terminated polyether silicone oil is introduced into reactor 106 to react with low molecular weight amine ether to produce low-VOC silicone oil. The heat-conducting inner liner 302 at the bottom of reactors 104 and 105 are connected together to form a relatively whole, realizing thermal coupling. Through thermal integration, the heat of one tower is used for the operation of another tower, reducing the consumption of external energy. When the material is transferred from reactor 104 to reactor 105, it can preheat reactor 105 in advance and avoid excessive changes in the thermal environment, thereby reducing energy consumption and improving the quality of the finished product.

[0027] Example 1

[0028] like Figure 1As shown, in this embodiment, the bottom of the No. 1 reactor 101 and the upper edge of the side surface of the No. 2 reactor 104 are connected to each other through the No. 1 conveying pipe 102. The bottom of the heat-conducting inner liner 302 installed below the No. 3 reactor 105 and the upper edge of the side surface of the No. 4 reactor 106 are connected to each other through the No. 1 conveying pipe 102. A conveying pump 103 is fixedly connected to the middle of the No. 1 conveying pipe 102.

[0029] In this embodiment, the material transfer between reactor 101 and reactor 104, and between reactor 3 and reactor 105 and reactor 4, is powered by the feed pump 103 and transferred by the feed pipe 102.

[0030] like Figure 1-2 As shown, in this embodiment, a condenser 202 is fixedly connected to the middle of the exhaust pipe 201. A coolant inlet 203 is fixedly installed at one end of the upper side of the condenser 202, and a coolant outlet 204 is fixedly installed at the other end of the bottom side of the condenser 202. The coolant inlet 203 and the coolant outlet 204 are interconnected through a spiral ring pipe installed inside the condenser 202. One end of the coolant outlet 204 is interconnected with the upper side of the No. 3 reactor 105. A condensate discharge pipe 205 is fixedly installed at the bottom of the condenser 202, and a condensate return pipe 206 is fixedly installed at the lower end of the condensate discharge pipe 205. One end of the condensate return pipe 206 is interconnected with the top of the No. 1 reactor 101.

[0031] In practice, the room-temperature allyl epoxy polyether liquid supply pipeline and the coolant inlet 203 are used as coolant to enter the spiral ring pipe inside the condenser 202 to cool the waste gas flowing in the waste gas discharge pipe 201 and condense the vapor in the gas. The condensate is then fed back into the No. 1 reactor 101 through the condensate return pipe 206 and reused in the synthesis process, thereby improving and reducing material consumption. At the same time, the allyl epoxy polyether liquid, as coolant, absorbs the temperature in the waste gas and preheats it to a certain extent, reducing the energy consumption of the reaction in the No. 3 reactor 105.

[0032] Example 2

[0033] Based on Example 1, this paper supplements the specific methods of thermal coupling of the two sets of heat-conducting inner liner 302 that were not mentioned in Example 1.

[0034] like Figure 3-4As shown, in this embodiment, a heat insulation shell 301 is fixedly sleeved on the outer surface of the heat-conducting inner liner 302. A heating resistor 303 is wound around the interlayer between the heat insulation shell 301 and the heat-conducting inner liner 302. The upper ends of the two sets of heating resistors 303 are connected to each other through a connecting bridge 304. A first power interface 305 is fixedly installed on the front side of the connecting bridge 304, and a second power interface 306 is fixedly installed on the lower end of the two sets of heating resistors 303. The bottom of the heat insulation shell 301 and the heat-conducting inner liner 302 are connected to the side surface of the third reaction vessel 105 through a second feed pipe 307. A filter 308 is fixedly connected in the middle of the second feed pipe 307, and a feed pump 103 is fixedly connected in the middle of the second feed pipe 307.

[0035] In specific implementation, the two sets of heat-conducting inner liner 302 are connected as one unit, and the two sets of heating resistors 303 are also connected as one unit through the connecting bridge 304. The first power interface 305 is connected to the power supply. The second power interface 306 of the side that is mainly working is connected to heat the heat-conducting inner liner 302. At the same time, the thermal conductivity of the heat-conducting inner liner 302 is used to heat the other side of the heat-conducting inner liner 302. When the heat-conducting inner liner 302 on both sides is working at the same time, the first power interface 305 is not powered, and the two sets of second power interfaces 306 are connected at the same time to heat the heat-conducting inner liner 302 on both sides. The neutralized low-ring end hydrogen-containing silicone oil in the second reaction vessel 104 is filtered and purified by the filter 308 through the second feed pipe 307 and then fed into the third reaction vessel 105.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rectification coupling device, characterized in that, include: The main body of the equipment (1) includes a No. 1 reactor (101), a No. 2 reactor (104) is connected to one side of the No. 1 reactor (104), a No. 3 reactor (105) is connected to one side of the No. 2 reactor (104), and a No. 4 reactor (106) is connected to one side of the No. 3 reactor (105). The condensation structure (2) includes a waste gas discharge pipe (201), which is fixedly installed on the top of the No. 2 reactor (104); The thermal coupling structure (3) includes a thermally conductive inner liner (302), which is fixedly installed at the bottom of the No. 2 reactor (104) and the No. 3 reactor (105).

2. The rectification coupling device of claim 1, wherein, The bottom of the No. 1 reactor (101) and the upper edge of the side surface of the No. 2 reactor (104) are connected to each other through the No. 1 conveying pipe (102). The bottom of the heat-conducting inner liner (302) installed below the No. 3 reactor (105) and the upper edge of the side surface of the No. 4 reactor (106) are connected to each other through the No. 1 conveying pipe (102). A conveying pump (103) is fixedly connected in the middle of the No. 1 conveying pipe (102).

3. The rectification coupling device of claim 2, wherein, A condenser (202) is fixedly connected to the middle of the exhaust pipe (201). A coolant inlet (203) is fixedly installed at one end of the upper side of the condenser (202), and a coolant outlet (204) is fixedly installed at the other end of the bottom side of the condenser (202). The coolant inlet (203) and the coolant outlet (204) are connected to each other through a spiral ring pipe installed inside the condenser (202). One end of the coolant outlet (204) is connected to the upper side of the No. 3 reaction vessel (105).

4. The rectification coupling device of claim 3, wherein, A condensate discharge pipe (205) is fixedly installed at the bottom of the condenser (202), and a condensate return pipe (206) is fixedly installed at the lower end of the condensate discharge pipe (205). One end of the condensate return pipe (206) is connected to the top of the No. 1 reactor (101).

5. The rectification coupling device of claim 4, wherein, A heat insulation shell (301) is fixedly sleeved on the outer surface of the heat-conducting inner liner (302). A heating resistor (303) is wound around the heat insulation shell (301) and the heat-conducting inner liner (302). The upper ends of the two sets of heating resistors (303) are connected to each other through a connecting bridge (304). A first power interface (305) is fixedly installed on the front side of the connecting bridge (304), and a second power interface (306) is fixedly installed on the lower ends of the two sets of heating resistors (303).

6. The rectification coupling device of claim 5, wherein, The bottom of the heat insulation shell (301) and the heat-conducting inner liner (302) are connected to the side surface of the No. 3 reactor (105) through the No. 2 conveying pipe (307). A filter (308) is fixedly connected in the middle of the No. 2 conveying pipe (307), and a conveying pump (103) is fixedly connected in the middle of the No. 2 conveying pipe (307).

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