Energy recovery device for polyester melt cooler

Abstract

The utility model relates to the technical field of polyester production energy conservation, and discloses an energy recovery device for a polyester melt cooler, which comprises a melt cooler, an EG evaporator is arranged on one side of the melt cooler, a conveying assembly capable of circularly conveying a heating medium between the melt cooler and the EG evaporator is arranged on one side of the melt cooler, and the EG evaporator is arranged on the other side of the melt cooler. The conveying assembly is provided with a control assembly capable of controlling the flow speed of a heating medium, the conveying assembly is further provided with a filtering assembly capable of filtering the heated heating medium, and the conveying assembly comprises a cooler feeding pipe fixedly communicated with the melt cooler. By means of the conveying assembly, circulating conveying of the heating medium between the melt cooler and the EG evaporator is achieved, heat energy generated by the melt cooler is effectively recycled, the energy utilization rate is remarkably increased, and the energy consumption cost of polyester production is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to polyester production energy -conserving technical field especially relates to a kind of energy recovery device for polyester melt cooler. BACKGROUND

[0002] At present in polyester production process, melt cooler is one of important equipment, it can generate a large amount of heat energy when cooling polyester melt. At present, most polyester production enterprises have many problems in the heat energy treatment of melt cooler.

[0003] Traditional process often uses the way of directly radiating to atmosphere, resulting in a large amount of heat energy being wasted, low energy utilization efficiency, increased production cost, some devices also use fan to accelerate fin and air to radiate, which radiates while supplementing a large amount of heat energy to maintain temperature stability and controllability, shortens the service life of equipment, therefore, it is necessary to develop a kind of polyester melt cooler energy recovery device which is efficient, stable and has impurity filtering function. SUMMARY

[0004] To solve the above technical problems, the utility model provides a kind of energy recovery device for polyester melt cooler.

[0005] The utility model adopts the following technical scheme: a kind of energy recovery device for polyester melt cooler, including melt cooler, the side of the melt cooler is equipped with EG evaporator, the side of the melt cooler is equipped with the conveying assembly that can circulate and transport heat medium between melt cooler and EG evaporator, the control assembly that can control the flow rate of heat medium is equipped on the conveying assembly, the filter assembly that can filter heated heat medium is further equipped on the conveying assembly, the conveying assembly includes the cooler feed pipe of fixed communication in melt cooler, the side of the cooler feed pipe is fixedly connected with heat medium loop pipe, one end of the heat medium loop pipe is fixedly connected with evaporator feed pipe, the evaporator feed pipe is fixedly communicated with EG evaporator.

[0006] Through the above technical scheme, heat medium forms circulation loop between melt cooler and EG evaporator, so that the heat energy generated by melt cooler can be transported to EG evaporator for recycling, realizes the recovery of energy, improves energy utilization rate.

[0007] As further improvement of the above scheme, the side of the melt cooler is equipped with first circulating pump, the water inlet end of the first circulating pump is fixedly connected with cooler discharge pipe, the water outlet end of the first circulating pump is fixedly connected with one end of cooler feed pipe, one end of the cooler discharge pipe is fixedly connected with melt cooler.

[0008] Through the technical scheme, the first circulating pump provides power for circulation of the heat medium inside the melt cooler, ensures that the heat medium can fully absorb the heat of the polyester melt in the melt cooler, improves heat exchange efficiency, and ensures stable cooling effect of the melt cooler.

[0009] As a further improvement of the above scheme, one side of the EG evaporator is provided with a second circulating pump, a water outlet end of the second circulating pump is fixedly communicated with one end of an evaporator feed pipe, a water inlet end of the second circulating pump is fixedly communicated with an evaporator discharge pipe, and one end of the evaporator discharge pipe is fixedly communicated with the EG evaporator.

[0010] Through the technical scheme, the heat medium in the EG evaporator can be continuously circulated, the heat medium is ensured to fully release heat in the EG evaporator to provide a stable heat source for evaporation of EG, and the stability of the heat medium circulation is maintained, and the reliability of the entire energy recovery system is improved.

[0011] As a further improvement of the above scheme, the cooler feed pipe and the evaporator discharge pipe are fixedly communicated with a supplementary heat medium pipe.

[0012] Through the technical scheme, the supplementary heat medium pipe can supplement appropriate heat medium in time according to system requirements during the heat medium circulation, ensures the continuity of the heat medium circulation, maintains stable system pressure, further optimizes the heat medium circulation effect, and guarantees efficient energy recovery.

[0013] As a further improvement of the above scheme, the control assembly includes an intelligent control valve fixedly installed on the supplementary heat medium pipe, and an intelligent temperature sensor fixedly installed on the cooler discharge pipe and used for controlling opening size of the intelligent control valve.

[0014] Through the technical scheme, the intelligent temperature sensor monitors the temperature of the heat medium in the cooler discharge pipe in real time, automatically controls the opening degree of the intelligent control valve according to the temperature data, and accurately adjusts the flow of the supplementary heat medium. When the temperature of the heat medium is too high, the opening degree of the intelligent control valve is increased to supplement more low-temperature heat medium and reduce the temperature of the heat medium; when the temperature of the heat medium is too low, the opening degree of the intelligent control valve is reduced to maintain stable heat medium temperature, so as to realize accurate control of the flow rate and temperature of the heat medium, and improve the automation level and stability of the energy recovery system.

[0015] As a further improvement to the above solution, the top of the heat medium loop pipe is provided with an insertion interface, the filter assembly includes a ceramic filter disposed inside the heat medium loop pipe, an insertion plate is fixedly installed on the top of the ceramic filter, the top of the insertion plate passes upward through the insertion interface, sealing strips are fixedly installed on both sides of the insertion plate, a limiting block fixedly installed with the heat medium loop pipe is sleeved on the outside of the insertion plate, sliding grooves are provided on both sides of the limiting block, a limiting plate is provided on the top of the insertion plate, both ends of the limiting plate extend into the interior of the adjacent sliding groove, and one side of the limiting plate is in contact with the top of the insertion plate.

[0016] Through the above technical solutions, ceramic filters can effectively filter impurities in the heat medium, preventing impurities from accumulating in the heat medium system and affecting heat exchange efficiency and normal equipment operation. The design of the insert sealing strip limit block and limiting plate makes the ceramic filter easy to install and disassemble, facilitating filter cleaning or filter element replacement, while ensuring the sealing between the filter assembly and the heat medium loop pipe, ensuring filtration effect and extending equipment service life.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention enables the circulating transport of heat medium between the melt cooler and the EG evaporator through a conveying component, effectively recovering and utilizing the heat energy generated by the melt cooler, significantly improving energy efficiency, and reducing the energy consumption cost of polyester production. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention with a filter assembly;

[0021] Figure 3 This is a schematic diagram of the structure of the present invention with a sealing strip;

[0022] Figure 4 This is a schematic diagram of the structure of the present invention, which includes an insert plate.

[0023] Explanation of key symbols:

[0024] 1. Melt cooler; 2. EG evaporator; 301. Cooler outlet pipe; 302. Heat medium circuit pipe; 303. Evaporator inlet pipe; 401. Intelligent control valve; 402. Intelligent temperature sensor; 501. Ceramic filter; 502. Insert plate; 503. Sealing strip; 504. Limiting block; 505. Limiting plate; 6. First circulation pump; 7. Cooler inlet pipe; 8. Second circulation pump; 9. Evaporator outlet pipe; 10. Supplementary heat medium pipe. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] Please combine Figures 1-4 An energy recovery device for a polyester melt cooler according to this embodiment includes a melt cooler 1, an EG evaporator 2 is provided on one side of the melt cooler 1, a conveying component is provided on one side of the melt cooler 1 to circulate the heat medium between the melt cooler 1 and the EG evaporator 2, a control component is provided on the conveying component to control the flow rate of the heat medium, and a filter component is also provided on the conveying component to filter the heated heat medium.

[0027] The conveying assembly includes a cooler feed pipe 7 fixedly connected to the melt cooler 1. A heat medium circuit pipe 302 is fixedly connected to one side of the cooler feed pipe 7. An evaporator feed pipe 303 is fixedly connected to one end of the heat medium circuit pipe 302. The evaporator feed pipe 303 is fixedly connected to the EG evaporator 2.

[0028] The heat transfer medium forms a circulation loop between the melt cooler 1 and the EG evaporator 2, so that the heat energy generated by the melt cooler 1 can be transferred to the EG evaporator 2 for reuse, realizing energy recovery and improving energy utilization efficiency.

[0029] A first circulation pump 6 is provided on one side of the melt cooler 1. The water inlet of the first circulation pump 6 is fixedly connected to the cooler outlet pipe 301. The water outlet of the first circulation pump 6 is fixedly connected to one end of the cooler inlet pipe 7. One end of the cooler outlet pipe 301 is fixedly connected to the melt cooler 1.

[0030] The first circulation pump 6 provides power for the circulation of the heat medium inside the melt cooler 1, ensuring that the heat medium can fully absorb the heat of the polyester melt in the melt cooler 1, improving the heat exchange efficiency and ensuring the stable cooling effect of the melt cooler 1.

[0031] A second circulation pump 8 is provided on one side of the EG evaporator 2. The water outlet of the second circulation pump 8 is fixedly connected to one end of the evaporator feed pipe 303. The water inlet of the second circulation pump 8 is fixedly connected to the evaporator discharge pipe 9. One end of the evaporator discharge pipe 9 is fixedly connected to the EG evaporator 2.

[0032] This allows the heat transfer medium in EG evaporator 2 to circulate continuously, ensuring that the heat transfer medium fully releases heat in EG evaporator 2, providing a stable heat source for EG evaporation, while maintaining the stability of the heat transfer medium circulation and improving the reliability of the entire energy recovery system.

[0033] A supplementary heat medium pipe 10 is fixedly connected between the cooler inlet pipe 7 and the evaporator outlet pipe 9. The control components include an intelligent control valve 401 fixedly installed on the supplementary heat medium pipe 10, and an intelligent temperature sensor 402 for controlling the opening size of the intelligent control valve 401 is fixedly installed on the cooler outlet pipe 301.

[0034] The addition of heat transfer pipe 10 allows for timely replenishment of appropriate amounts of heat transfer medium according to system requirements during the heat transfer medium circulation process, ensuring the continuity of heat transfer medium circulation, maintaining stable system pressure, further optimizing the heat transfer medium circulation effect, and ensuring efficient energy recovery.

[0035] The top of the heat medium return pipe 302 is provided with an insertion interface. The filter assembly includes a ceramic filter 501 disposed inside the heat medium return pipe 302. An insertion plate 502 is fixedly installed on the top of the ceramic filter 501. The top of the insertion plate 502 passes upward through the insertion interface. Sealing strips 503 are fixedly installed on both sides of the insertion plate 502. A limiting block 504 fixedly installed with the heat medium return pipe 302 is sleeved on the outside of the insertion plate 502. Sliding grooves are provided on both sides of the limiting block 504. A limiting plate 505 is provided on the top of the insertion plate 502. Both ends of the limiting plate 505 extend into the interior of the adjacent sliding groove. One side of the limiting plate 505 is in contact with the top of the insertion plate 502.

[0036] The intelligent temperature sensor 402 monitors the temperature of the heat medium in the cooler outlet pipe 301 in real time. Based on the temperature data, it automatically controls the opening of the intelligent control valve 401 to precisely adjust the flow rate of the replenished heat medium. When the heat medium temperature is too high, the opening of the intelligent control valve 401 is increased to replenish more low-temperature heat medium and lower the heat medium temperature; when the heat medium temperature is too low, the opening of the intelligent control valve 401 is decreased to maintain a stable heat medium temperature. This achieves precise control of the heat medium flow rate and temperature, improving the automation level and stability of the energy recovery system.

[0037] The implementation principle of the energy recovery device for a polyester melt cooler in this embodiment is as follows: During the polyester production process, the polyester melt enters the melt cooler 1. The heat transfer medium circulates within the melt cooler 1 under the action of the first circulating pump 6, absorbing heat from the polyester melt and causing its temperature to rise. The heated heat transfer medium flows out of the melt cooler 1 through the cooler outlet pipe 301 and enters the circulating pump 6. In the cooler inlet pipe 7, a portion of the heat transfer medium passes through the heat transfer medium loop pipe 302 and the evaporator inlet pipe 303, and then enters the EG evaporator 2 under the action of the second circulating pump 8, transferring heat to the EG and causing it to evaporate, thus lowering the temperature of the heat transfer medium itself. The cooled heat transfer medium flows out of the EG evaporator 2 through the evaporator outlet pipe 9 and then returns to the heat transfer medium circulation system of the melt cooler 1 through the supplementary heat transfer medium pipe 10.

[0038] During the heat medium circulation process, the intelligent temperature sensor 402 monitors the temperature of the heat medium in the cooler outlet pipe 301 in real time. When the heat medium temperature is higher than the set value, the intelligent temperature sensor 402 sends a signal to the intelligent control valve 401, which increases the opening degree, allowing more low-temperature heat medium to enter the heat medium circulation system from the supplementary heat medium pipe 10, thereby lowering the heat medium temperature. When the heat medium temperature is lower than the set value, the intelligent temperature sensor 402 controls the intelligent control valve 401 to decrease the opening degree, maintaining a stable heat medium temperature.

[0039] Meanwhile, the heat medium passes through the ceramic filter 501 during circulation, which filters impurities in the heat medium. When the ceramic filter 501 needs to be cleaned or replaced, first pull the limiting plate 505 out of the sliding groove of the limiting block 504, then lift the insert plate 502 upwards to remove the ceramic filter 501 from the heat medium return pipe 302 for processing. After processing, insert the ceramic filter 501 into the heat medium return pipe 302, and install the insert plate 502, sealing strip 503, limiting block 504, and limiting plate 505 to ensure the sealing and stability of the filter assembly.

[0040] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An energy recovery device for a polyester melt cooler, comprising a melt cooler (1), wherein an EG evaporator (2) is provided on one side of the melt cooler (1), characterized in that, The melt cooler (1) is provided with a conveying component on one side, which can circulate the heat medium between the melt cooler (1) and the EG evaporator (2). The conveying component is provided with a control component that can control the flow rate of the heat medium. The conveying component is also provided with a filter component that can filter the heated heat medium. The conveying component includes a cooler feed pipe (7) fixedly connected to the melt cooler (1). A heat medium circuit pipe (302) is fixedly connected to one side of the cooler feed pipe (7). An evaporator feed pipe (303) is fixedly connected to one end of the heat medium circuit pipe (302). The evaporator feed pipe (303) is fixedly connected to the EG evaporator (2).

2. The energy recovery device for a polyester melt cooler as described in claim 1, characterized in that, A first circulation pump (6) is provided on one side of the melt cooler (1). The water inlet of the first circulation pump (6) is fixedly connected to the cooler outlet pipe (301). The water outlet of the first circulation pump (6) is fixedly connected to one end of the cooler inlet pipe (7). One end of the cooler outlet pipe (301) is fixedly connected to the melt cooler (1).

3. The energy recovery device for a polyester melt cooler as described in claim 1, characterized in that, A second circulation pump (8) is provided on one side of the EG evaporator (2). The water outlet of the second circulation pump (8) is fixedly connected to one end of the evaporator feed pipe (303). The water inlet of the second circulation pump (8) is fixedly connected to the evaporator discharge pipe (9). One end of the evaporator discharge pipe (9) is fixedly connected to the EG evaporator (2).

4. The energy recovery device for a polyester melt cooler as described in claim 2, characterized in that, A supplementary heat medium pipe (10) is fixedly connected between the cooler feed pipe (7) and the evaporator discharge pipe (9).

5. The energy recovery device for a polyester melt cooler as described in claim 4, characterized in that, The control component includes an intelligent control valve (401) fixedly installed on the supplementary heat medium pipe (10), and an intelligent temperature sensor (402) for controlling the opening size of the intelligent control valve (401) is fixedly installed on the cooler discharge pipe (301).

6. The energy recovery device for a polyester melt cooler as described in claim 1, characterized in that, The top of the heat medium loop pipe (302) is provided with an insertion interface. The filter assembly includes a ceramic filter (501) disposed inside the heat medium loop pipe (302). An insertion plate (502) is fixedly installed on the top of the ceramic filter (501). The top of the insertion plate (502) extends upward through the insertion interface. Sealing strips (503) are fixedly installed on both sides of the insertion plate (502). A limiting block (504) fixedly installed with the heat medium loop pipe (302) is sleeved on the outside of the insertion plate (502). Sliding grooves are provided on both sides of the limiting block (504). A limiting plate (505) is provided on the top of the insertion plate (502). Both ends of the limiting plate (505) extend into the interior of the adjacent sliding groove. One side of the limiting plate (505) is in contact with the top of the insertion plate (502).

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