Energy-saving condensate water recovery system of polyurea reaction kettle

Abstract

The utility model relates to the technical field of condensate water recovery, in particular to an energy-saving condensate water recovery system of a polyurea reaction kettle, which comprises a reaction kettle body and a support bottom plate, first support legs are welded and fixed on the bottom surface of the reaction kettle body at equal angles, second support legs are welded and fixed on the bottom surface of the support bottom plate, and the first support legs and the second support legs are welded and fixed on the support bottom plate. The second supporting legs are symmetrically distributed on the bottom surface of the supporting bottom plate in a staggered mode, the top surface of the reaction kettle body is connected with a first feeding pipe, and the bottom surface of the reaction kettle body is connected with a discharging pipe. According to the device, an efficient condensate water recovery structure is arranged, waste heat of condensate water is used for preheating polyurea, heating energy consumption in the reaction process is reduced, the path of the condensate water is prolonged through the partition plate, heat dissipation is accelerated through the air expansion bin and the heat dissipation pipeline, the cooling efficiency is improved, the cooled condensate water is conveyed into the spiral cooling channel, and the cooling efficiency is improved. And therefore, the consumption of fresh water is reduced, and the waste of water resources is reduced.

Description

Technical Field

[0001] This utility model relates to the field of condensate recovery technology, and in particular to an energy-saving condensate recovery system for a polyurea reactor. Background Technology

[0002] Condensate recovery is the process of collecting, treating, and reusing the condensate generated during the cooling of the reactor in the polyurea production process. In order to make full use of the water resources and heat energy in the condensate generated by the cooling system, it is usually necessary to treat and recover the condensate. Through a reasonable condensate recovery system, the water resources and heat energy in the condensate can be effectively utilized, reducing production costs, improving energy efficiency, and reducing environmental impact.

[0003] In the prior art, such as the "A Reactor Cooling Water Circulation and Recovery System" in Chinese Patent CN108043343A, this utility model improves the cooling water with high temperature by adding a structure function that allows the cold air to absorb heat energy, which is beneficial for cooling the water and making it easy to circulate. The cold air generated by the refrigerator enters the spiral tube and the cold air pipe. The cold air in the spiral tube absorbs the heat energy of the cooling water at the bottom of the separator by the energy difference between the cold air and the cooling water.

[0004] In existing methods of recycling cooling water from reactors, the high-temperature cooling water is directly cooled and stored for easy recycling. However, using a refrigeration unit to cool the water requires a large amount of additional electricity to generate the cooling air, which increases operating costs. Furthermore, the high-temperature cooling water contains a large amount of heat, and directly cooling it not only wastes the heat contained in the cooling water but also requires more cooling air. Utility Model Content

[0005] To overcome the problem that when recycling cooling water in a reactor, directly cooling the high-temperature cooling water before storage for easy recycling requires a large amount of additional electricity to generate cold air, increasing operating costs, and that directly cooling the high-temperature cooling water not only wastes the heat contained in the cooling water but also requires more cold air for cooling, the following approach is needed.

[0006] The technical solution of this utility model is as follows: an energy-saving condensate recovery system for a polyurea reactor, comprising a reactor body and a supporting base plate. A first support leg is welded and fixed at equal angles on the bottom surface of the reactor body, and a second support leg is welded and fixed on the bottom surface of the supporting base plate. The second support legs are symmetrically and alternately distributed on the bottom surface of the supporting base plate. A first feed pipe is connected and installed on the top surface of the reactor body, and a discharge pipe is connected and installed on the bottom surface of the reactor body.

[0007] Preferably, the reactor body has a spiral cooling channel inside, and an inlet pipe and an outlet pipe are connected and installed on the outer surface of the reactor body. The inlet pipe is connected to the bottom end of the spiral cooling channel, and the outlet pipe is connected to the top end of the spiral cooling channel.

[0008] Preferably, a motor is fixedly connected to the center of the reactor body, a stirring shaft is fixedly connected to the output end of the motor, and stirring blades are fixedly connected to the outer side of the stirring shaft at equal angles, with the stirring blades evenly distributed on the stirring shaft.

[0009] Preferably, a heat exchange box is fixedly connected to the top surface of the supporting base plate. The heat exchange box has a water bath chamber and a heating chamber inside. A second feed pipe is provided on the top surface of the heat exchange box, and the second feed pipe communicates with the heating chamber.

[0010] Preferably, a pump is provided on the top surface of the heat exchange box, the input end of the pump is fixedly connected to a pumping pipe, and the pumping pipe is located inside the heating chamber. The output end of the pump is fixedly connected to a feeding pipe, and the end of the feeding pipe is located on the top surface of the reactor body.

[0011] Preferably, a water storage tank is welded and fixed to the bottom surface of the supporting base plate. A transport pump is provided on one side of the water storage tank. A transport pipe is fixedly connected to the input end of the transport pump. The end of the transport pipe is connected to the water bath chamber. A circulation pump is provided on the other side of the water storage tank. The output end of the circulation pump is connected to the water inlet pipe.

[0012] Preferably, the inner wall of the water storage tank is welded and fixed with partition plates at equal intervals, the interior of the water storage tank is provided with heat dissipation pipes at equal intervals and staggered, the side of the water storage tank is welded and fixed with an air expansion chamber, and a fan is connected and installed on the side of the air expansion chamber.

[0013] The beneficial effects of this utility model are:

[0014] 1. The polyurea to be processed is added to the heating chamber through the second feed pipe, and the condensate after heat exchange is transported to the water bath through the water outlet pipe. The waste heat of the condensate can be used to preheat the polyurea in the heating chamber. The preheated polyurea is extracted through the extraction pipe by the pump and then transported to the reaction vessel through the feed pipe for processing and reaction. This efficiently recovers the waste heat of the condensate, reduces the heating energy consumption during the reaction process, and lowers the production cost.

[0015] 2. The condensate in the heat exchange box is pumped through a transport pipe to a storage tank for storage. Since the condensate in the heat exchange box has residual heat, a partition plate is used to increase the flow path of the condensate in the storage tank, extending the cooling time. A fan blows air into the air expansion chamber, which evenly distributes the air output by the fan into multiple heat dissipation pipes. The rapidly flowing air in the heat dissipation pipes carries away the heat from the condensate flowing in the storage tank, accelerating the heat dissipation rate. The condensate is then transported through the inlet pipe to the spiral cooling channel by a circulation pump for use in cooling the reactor, thereby reducing the amount of fresh water used and lowering water consumption. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the present invention.

[0017] Figure 2 The diagram shown is a three-dimensional structural schematic of the heat exchange box of this utility model;

[0018] Figure 3 The diagram shown is a three-dimensional cross-sectional view of the reaction vessel body of this utility model.

[0019] Figure 4 The diagram shown is a three-dimensional cross-sectional view of the heat exchange box of this utility model.

[0020] Figure 5 The diagram shown is a three-dimensional structural schematic of the water storage tank of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Reactor body; 2. Support base plate; 3. First support leg; 4. Second support leg; 5. First feed pipe; 6. Discharge pipe; 101. Spiral cooling channel; 102. Water inlet pipe; 103. Water outlet pipe; 104. Motor; 105. Stirring shaft; 106. Stirring blade; 201. Heat exchange box; 202. Water bath chamber; 203. Heating chamber; 204. Second feed pipe; 205. Pump; 206. Pumping pipe; 207. Feeding pipe; 301. Water storage tank; 302. Transport pump; 303. Transport pipe; 304. Circulation pump; 305. Divider plate; 306. Heat dissipation pipe; 307. Ventilation chamber; 308. Fan. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-5 This utility model provides an embodiment of an energy-saving condensate recovery system for a polyurea reactor, comprising a reactor body 1 and a supporting base plate 2. A first support leg 3 is welded and fixed at equal angles on the bottom surface of the reactor body 1, and a second support leg 4 is welded and fixed on the bottom surface of the supporting base plate 2. The second support legs 4 are symmetrically and alternately distributed on the bottom surface of the supporting base plate 2. A first feed pipe 5 is connected and installed on the top surface of the reactor body 1, and a discharge pipe 6 is connected and installed on the bottom surface of the reactor body 1.

[0024] The reactor body 1 is provided with a spiral cooling channel 101 inside. The outer surface of the reactor body 1 is connected to a water inlet pipe 102 and a water outlet pipe 103. The water inlet pipe 102 is connected to the bottom end of the spiral cooling channel 101, and the water outlet pipe 103 is connected to the top end of the spiral cooling channel 101. When the reactor needs to be cooled, condensate is introduced into the spiral cooling channel 101 through the water inlet pipe 102. The condensate flowing in the spiral cooling channel 101 can carry away the heat in the reactor and discharge it out of the spiral cooling channel 101 through the water outlet pipe 103.

[0025] A motor 104 is fixedly connected to the center of the reactor body 1. A stirring shaft 105 is fixedly connected to the output end of the motor 104. Stirring blades 106 are fixedly connected to the outer side of the stirring shaft 105 at equal angles. The stirring blades 106 are evenly distributed on the stirring shaft 105. During the polyurea production process, the motor 104 drives the stirring shaft 105 to rotate, which in turn drives the stirring blades 106 to rotate, thus stirring the polyurea inside and making it heat more evenly.

[0026] A heat exchange box 201 is fixedly connected to the top surface of the supporting base plate 2. The heat exchange box 201 has a water bath chamber 202 and a heating chamber 203. A second feed pipe 204 is provided on the top surface of the heat exchange box 201 and is connected to the heating chamber 203. The polyurea to be processed can be added to the heating chamber through the second feed pipe 204. The condensate after heat exchange is transported to the water bath chamber 202 through the water outlet pipe 103. Thus, the waste heat of the condensate can be used to preheat the polyurea in the heating chamber 203, which efficiently recovers the waste heat of the condensate, reduces heating energy consumption, and lowers production costs.

[0027] A pump 205 is installed on the top surface of the heat exchange box 201. The input end of the pump 205 is fixedly connected to a pump pipe 206, which is located inside the heating chamber 203. The output end of the pump 205 is fixedly connected to a feed pipe 207, which is located on the top surface of the reactor body 1. The preheated polyurea is extracted by the pump 205 through the pump pipe 206 and then transported to the reactor for processing and reaction through the feed pipe 207.

[0028] A water storage tank 301 is welded and fixed to the bottom surface of the supporting base plate 2. A transport pump 302 is installed on one side of the water storage tank 301. A transport pipe 303 is fixedly connected to the input end of the transport pump 302. The end of the transport pipe 303 is connected to the water bath chamber 202. A circulation pump 304 is installed on the other side of the water storage tank 301. The output end of the circulation pump 304 is connected to the water inlet pipe 102. The condensate after heat exchange in the heat exchange box 201 is extracted by the transport pump 302 and transported to the water storage tank 301 for storage through the transport pipe 303. The condensate can be transported to the spiral cooling channel 101 through the water inlet pipe 102 by the circulation pump 304 for use in cooling the reactor, thereby reducing the amount of fresh water used and reducing water consumption.

[0029] The inner wall of the water storage tank 301 is welded and fixed with partition plates 305 at equal intervals. The interior of the water storage tank 301 is provided with heat dissipation pipes 306 arranged at equal intervals and in a staggered manner. The side of the water storage tank 301 is welded and fixed with an air expansion chamber 307. A fan 308 is connected and installed on the side of the air expansion chamber 307. Since the condensate in the heat exchange box 201 has residual heat, in order to avoid affecting the normal use of the condensate, it is necessary to cool the condensate. The partition plates 305 increase the flow path of the condensate in the water storage tank 301 and extend the cooling time of the condensate. The fan 308 blows air into the air expansion chamber 307. The air expansion chamber 307 evenly distributes the air output by the fan 308 into multiple heat dissipation pipes 306. The rapidly flowing air in the heat dissipation pipes 306 can carry away the heat of the flowing condensate in the water storage tank 301, accelerate the heat dissipation speed of the condensate, and thus not affect the subsequent use of the condensate.

[0030] Working principle: According to Figures 1-5 As shown, when the reactor needs to be cooled, the condensate in the water storage tank 301 is transported to the spiral cooling channel 101 through the water inlet pipe 102 by the circulating pump 304. The condensate flowing in the spiral cooling channel 101 carries away the heat in the reactor and is discharged out of the spiral cooling channel 101 through the water outlet pipe 103.

[0031] The polyurea to be processed is added to the heating chamber through the second feed pipe 204, and the condensate after heat exchange is transported to the water bath chamber 202 through the water outlet pipe 103. The waste heat of the condensate is used to preheat the polyurea in the heating chamber 203, which efficiently recovers the waste heat of the condensate, reduces heating energy consumption, and lowers production costs.

[0032] The preheated polyurea is extracted by the pump 205 through the extraction pipe 206 and transported to the reactor through the feeding pipe 207 for processing and reaction. During the polyurea production process, the stirring shaft 105 is driven by the motor 104 to rotate, which in turn drives the stirring blade 106 to rotate, stirring the polyurea inside to make it heat more evenly.

[0033] The condensate in the heat exchange box 201 is pumped out by the transport pump 302 and transported to the storage tank 301 for storage via the transport pipe 303. Since the condensate in the heat exchange box 201 has residual heat, the flow path of the condensate in the storage tank 301 is increased by the partition plate 305, which prolongs the cooling time of the condensate. The fan 308 blows air into the air expansion chamber 307, and the air output by the fan 308 is evenly distributed into multiple heat dissipation pipes 306 through the air expansion chamber 307. The rapidly flowing air in the heat dissipation pipes 306 can carry away the heat of the condensate flowing in the storage tank 301, accelerate the heat dissipation speed of the condensate, and thus not affect the subsequent use of the condensate.

[0034] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving condensate recovery system for a polyurea reactor, comprising a reactor body (1) and a supporting base plate (2), characterized in that: The bottom surface of the reactor body (1) is welded and fixed with a first support leg (3) at equal angles, and the bottom surface of the supporting base plate (2) is welded and fixed with a second support leg (4). The second support leg (4) is symmetrically and staggered on the bottom surface of the supporting base plate (2). The top surface of the reactor body (1) is connected and installed with a first feed pipe (5), and the bottom surface of the reactor body (1) is connected and installed with a discharge pipe (6).

2. The energy-saving condensate recovery system for a polyurea reactor according to claim 1, characterized in that: The reactor body (1) is provided with a spiral cooling channel (101) inside. The outer surface of the reactor body (1) is connected to a water inlet pipe (102) and a water outlet pipe (103). The water inlet pipe (102) is connected to the bottom end of the spiral cooling channel (101), and the water outlet pipe (103) is connected to the top end of the spiral cooling channel (101).

3. The energy-saving condensate recovery system for a polyurea reactor according to claim 1, characterized in that: A motor (104) is fixedly connected to the center of the reactor body (1), and a stirring shaft (105) is fixedly connected to the output end of the motor (104). Stirring blades (106) are fixedly connected to the outer side of the stirring shaft (105) at equal angles, and the stirring blades (106) are evenly distributed on the stirring shaft (105).

4. The energy-saving condensate recovery system for a polyurea reactor according to claim 1, characterized in that: A heat exchange box (201) is fixedly connected to the top surface of the supporting base plate (2). A water bath chamber (202) is opened inside the heat exchange box (201). A heating chamber (203) is opened inside the heat exchange box (201). A second feed pipe (204) is provided on the top surface of the heat exchange box (201), and the second feed pipe (204) is in communication with the heating chamber (203).

5. The energy-saving condensate recovery system for a polyurea reactor according to claim 4, characterized in that: The top surface of the heat exchange box (201) is provided with a pump (205), the input end of the pump (205) is fixedly connected to a pump pipe (206), and the pump pipe (206) is located inside the heating chamber (203). The output end of the pump (205) is fixedly connected to a feed pipe (207), and the end of the feed pipe (207) is located on the top surface of the reactor body (1).

6. The energy-saving condensate recovery system for a polyurea reactor according to claim 1, characterized in that: A water storage tank (301) is welded and fixed to the bottom surface of the supporting base plate (2). A transport pump (302) is provided on one side of the water storage tank (301). A transport pipe (303) is fixedly connected to the input end of the transport pump (302). The end of the transport pipe (303) is connected to the water bath chamber (202). A circulation pump (304) is provided on the other side of the water storage tank (301). The output end of the circulation pump (304) is connected to the water inlet pipe (102).

7. The energy-saving condensate recovery system for a polyurea reactor according to claim 6, characterized in that: The inner wall of the water storage tank (301) is welded and fixed with partition plates (305) at equal intervals. The interior of the water storage tank (301) is provided with heat dissipation pipes (306) at equal intervals and staggered. The side of the water storage tank (301) is welded and fixed with an air expansion chamber (307). A fan (308) is connected and installed on the side of the air expansion chamber (307).

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