Steam condensate heat utilization device

Abstract

The utility model provides a steam condensate heat utilization device which comprises an absorber, a generator and a condenser, the absorber comprises a dilute solution bag and a concentrated solution bag, the generator is sequentially connected with a heat exchanger and the absorber through pipelines, and the heat utilization device further comprises a concentrated solution overflow pipe and an air extractor. The concentrated solution overflow pipe prevents the liquid level of the concentrated solution bag from being too high, and the air extractor vacuumizes the heat utilization device to remove non-condensable gas during operation. According to the utility model, under the action of the absorber, the generator, the evaporator, the condenser and the heat exchanger, the recovered steam condensate is reused, the recovered heat of the steam condensate is used for heating places, and the recovered condensate is cooled by the heat exchanger and can be used as a coolant for cooling other places, so that the effects of energy conservation and emission reduction are achieved; the application of the steam condensate heat technology has wide prospects and potential.

Description

Technical Field

[0001] This utility model relates to the field of energy engineering, and in particular to a steam condensate heat utilization device. Background Technology

[0002] Steam condensate heat recovery technology is an important technological innovation in the energy field. It focuses on the recovery and reuse of heat energy from steam condensate generated during industrial production, which not only improves energy efficiency but also brings significant economic and environmental benefits to enterprises.

[0003] In industrial production, steam, as an important form of energy, is widely used in various processes. However, during steam use, a large amount of condensate is generated, carrying away a significant amount of heat energy. Traditional methods often involve directly discharging this condensate, which not only wastes valuable heat energy resources but may also cause thermal pollution to the environment. Therefore, developing an effective steam condensate heat recovery technology is crucial, and this technology was developed precisely to address this problem. This technology, through specific heat exchange equipment and processes, efficiently recovers the heat energy from steam and reuses it in other stages of the production process. Implementing this technology can significantly reduce energy consumption and heat emissions during production, thereby achieving energy conservation and emission reduction goals. Therefore, developing a highly efficient steam condensate heat recovery device is a pressing issue in the current industrial sector. Utility Model Content

[0004] The main purpose of this utility model is to provide a steam condensate heat recovery device, which effectively recovers the heat energy in the steam condensate, improves energy utilization, reduces enterprise operating costs, and achieves energy conservation and emission reduction.

[0005] A steam condensate heat utilization device includes an absorber and a generator, wherein the absorber is disposed below the generator.

[0006] The absorber includes a dilute solution bladder and a concentrated solution bladder, which are respectively disposed at the lower part of the absorber and are used to collect the dilute solution generated by absorbing water vapor and the concentrated solution formed by the action of the absorber and the heat exchanger, respectively.

[0007] The generator is connected to a heat exchanger via a first pipe, on which a liquid bladder is provided. The heat exchanger is connected to a concentrated solution bladder via a second pipe. The heat exchanger is used to cool the concentrated solution flowing from the generator into the concentrated solution bladder.

[0008] The generator is connected to the heat exchanger via a third pipe, and a three-way valve is installed on the third pipe; the heat exchanger is connected to the dilute solution bladder via a fourth pipe, and a generator pump is installed on the fourth pipe.

[0009] Preferably, a baffle plate and a condenser are provided above the generator. The condenser is used to cool the water vapor generated by the boiling of the solution in the generator. A condenser water pan is provided at the bottom of the condenser to collect the water vapor condensed by the condenser, i.e., refrigerant water.

[0010] Preferably, the condenser water pan is connected to the evaporator via a U-shaped tube. The refrigerant water in the condenser water pan flows to the evaporator via a water seal along the U-shaped tube due to the pressure difference. The height of the U-shaped tube should be greater than the pressure difference between the upper and lower cylinders to reduce pressure and throttle the flow.

[0011] Preferably, an evaporator water tray is provided below the evaporator to collect the refrigerant water entering the evaporator.

[0012] Preferably, the evaporator water pan is connected to the water bladder via a fifth pipe, and the water bladder is connected to the spray system inside the evaporator via a sixth pipe, with an evaporator pump installed on the sixth pipe.

[0013] Preferably, the evaporator is equipped with a baffle plate to allow the refrigerant water vapor formed by vaporization in the evaporator to enter the absorber, so that the refrigerant water droplets mixed in the vapor are retained in the evaporator to continue to vaporize, thereby avoiding the loss of cooling capacity.

[0014] Preferably, the concentrated solution capsule is connected to the solution spraying system via a seventh pipe, and an absorber pump is installed on the seventh pipe.

[0015] Preferably, the generator is connected to a concentrated solution overflow pipe and a concentrated solution bladder, the concentrated solution overflow pipe being used to drain excess concentrated solution.

[0016] Preferably, the device further includes a vacuum device for evacuating the heat utilization device to remove non-condensable gases during operation.

[0017] The beneficial effects of this invention are as follows: This invention utilizes the functions of an absorber, generator, evaporator, condenser, and heat exchanger to reuse the recovered steam condensate. The recovered heat is used for heating, and the recovered condensate, after being cooled by the heat exchanger, can be used as a coolant for cooling other areas. This invention effectively recovers the heat energy from the steam condensate, reducing enterprise operating costs and achieving energy conservation and emission reduction through improved energy utilization. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Figure 1 This is an overall schematic diagram of the present invention;

[0020] In the diagram: Absorber 1, dilute solution bladder 2, generator pump 3, heat exchanger 4, generator 5, concentrated solution bladder 6, baffle plate 7, condenser 8, condenser water pan 9, U-tube 10, evaporator 11, evaporator water pan 12, water bladder 13, evaporator pump 14, spray system 15, baffle plate 16, absorber pump 17, solution spray system 18, liquid bladder 19, three-way valve 20, concentrated solution overflow pipe 21, and vacuum device 22. Detailed Implementation

[0021] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1 As shown, a steam condensate heat utilization device includes an absorber 1 and a generator 5. The absorber 1 is located below the generator 5. The absorber 1 includes a dilute solution bladder 2 and a concentrated solution bladder 6, which are respectively located at the lower part of the absorber 1 and are used to collect the dilute solution generated by absorbing water vapor and the concentrated solution formed by the interaction of the dilute solution with the generator 5 and the heat exchanger 4. The generator 5 is connected to the heat exchanger 4 through a first pipe, on which a liquid bladder 19 is installed. The heat exchanger 4 is connected to the concentrated solution bladder 6 through a second pipe and is used to cool the concentrated solution flowing from the generator 5 into the concentrated solution bladder 6. The generator 5 is connected to the heat exchanger 4 through a third pipe, and the heat exchanger 4 is connected to the dilute solution bladder 2 through a fourth pipe, on which a first generator pump 3 is installed.

[0023] As a preferred embodiment, a baffle plate 7 and a condenser 8 are provided above the generator 5. The condenser 8 is used to cool the water vapor generated by the boiling of the solution in the generator 1. A condenser water pan 9 is provided at the bottom of the condenser 8 to collect the water vapor condensed by the condenser 8, i.e., the refrigerant water.

[0024] As a preferred embodiment, the condenser water pan 9 is connected to the evaporator 11 via a U-shaped tube 10. The refrigerant water in the condenser water pan 9 flows to the evaporator 11 through the U-shaped tube 10 by the pressure difference. The height of the U-shaped tube 10 should be greater than the pressure difference between the upper and lower cylinders to reduce pressure and throttle the flow.

[0025] As a preferred embodiment, an evaporator water tray 12 is provided below the evaporator 11 to collect the refrigerant water entering the evaporator.

[0026] As a preferred embodiment, the evaporator water pan 12 is connected to the water bladder 13 via a fifth pipe, and the water bladder 13 is connected to the spray system 15 inside the evaporator 11 via a sixth pipe. An evaporator pump 14 is installed on the sixth pipe. The refrigerant water in the water bladder 13 is pumped by the evaporator pump 14 to the spray system 15 inside the evaporator. After being sprayed from the nozzles, it sprays onto the outer surface of the chilled water pipe bundle below, absorbing heat from the chilled water inside the pipe bundle and vaporizing into water vapor. To ensure that the refrigerant water is evenly sprayed onto the chilled water pipe bundle, the spray volume of refrigerant water must be greater than the actual evaporation volume. Therefore, only a portion of the sprayed refrigerant water evaporates into water vapor; the remaining refrigerant water, along with the refrigerant water from the condenser 8, is collected in the evaporator water pan 12 and flows into the water bladder 13, where it is reintroduced into the spray system for evaporation and refrigeration. The water bladder 13 should maintain a certain water level to adapt to load changes and to prevent cavitation of the refrigerant water pump when the refrigerant water volume decreases.

[0027] As a preferred embodiment, the evaporator 11 is provided with a baffle plate 16, which is used to allow the refrigerant water vapor formed by vaporization in the evaporator 11 to enter the absorber 1, so that the refrigerant water droplets mixed in the vapor are retained in the evaporator and continue to vaporize, so as to avoid loss of cooling capacity.

[0028] As a preferred embodiment, the concentrated solution bladder 6 is connected to the solution spraying system 18 via a seventh pipe. An absorber pump 17 is installed on the seventh pipe, which sends the concentrated solution bladder 6 into the solution spraying system 18 and sprays it onto the cooling water pipe. The solution is cooled down and absorbs the refrigerant water vapor that fills the space between the tubes to become a dilute solution, which then flows into the dilute solution bladder 2 and the concentrated solution bladder 6.

[0029] As a preferred embodiment, the generator 5 is connected to the concentrated solution overflow pipe 21 and the concentrated solution bladder 6, the concentrated solution overflow pipe being used to discharge excess concentrated solution; the device also includes a vacuum device 22 for evacuating the heat utilization device and removing non-condensable gases during operation.

[0030] The working principle of this invention is as follows: In the absorber 1, a dilute solution generated by absorbing water vapor accumulates in the dilute solution bladder 2 at the bottom of the absorber. This dilute solution is then transported to the heat exchanger 4 by the generator pump 3, preheated, and then enters the generator 5. Heating steam (or hot water) passes through the heating tubes of the generator 5, heating the dilute solution outside the tube bundle to its boiling point. Through boiling, it becomes a concentrated solution. This concentrated solution flows from the liquid bladder 19 along the pipes through the heat exchanger 4, is cooled, and then flows into the concentrated solution bladder 6 of the absorber 1. The water vapor generated by the boiling of the solution in the generator 5 flows upward through the baffle plate 7 into the condenser 8. Cooling water passes through the tube bundle of the condenser 8, condensing the water vapor outside the tube bundle into refrigerant water, which is collected in the condenser water pan 9. Due to the pressure difference, it flows through the U-shaped tube 10 and water seal to the evaporator 11. After entering the evaporator 11, the refrigerant water is collected in the evaporator water pan 12 and flows into the water bladder 13. It is then pumped by the evaporator pump 14 to the spray system 15 within the evaporator, where it is sprayed through nozzles onto the outer surface of the chilled water tube bundle. This vaporizes the water, absorbing heat from the chilled water within the tube bundle and turning into water vapor. The vaporized refrigerant water vapor in the evaporator 11 passes through the baffle plate 16 and enters the absorber 1. The concentrated solution in the concentrated solution bladder 6 is pumped by the absorber pump 17 into the solution spray system 18, where it is sprayed onto the cooling water tube bundle of the absorber 1 below the solution spray system 18. The solution is cooled and degraded, simultaneously absorbing the refrigerant water vapor filling the space between the tube bundles to become a dilute solution, which flows into the dilute solution bladder 2 and the concentrated solution bladder 6. The dilute solution flowing into the dilute solution bladder 2 is pumped by the generator pump 3 and the heat exchanger 4 into the generator 5. The concentrated solution flowing into the concentrated solution bladder 6 mixes with the concentrated solution from the generator 5 and is then pumped back to the solution spray system 18 by the absorber pump 17.

[0031] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A steam condensate heat utilization device, characterized in that: The heat utilization device includes an absorber (1) and a generator (5), wherein the absorber (1) is disposed below the generator (5). The absorber (1) includes a dilute solution bladder (2) and a concentrated solution bladder (6). The dilute solution bladder (2) and the concentrated solution bladder (6) are respectively located at the lower part of the absorber (1) and are used to collect the dilute solution generated by absorbing water vapor and the concentrated solution formed by the dilute solution through the generator (5). The generator (5) is connected to the heat exchanger (4) through a first pipe, and a liquid bladder (19) is provided on the first pipe. The heat exchanger (4) is connected to the concentrated solution bladder (6) through a second pipe for cooling the concentrated solution flowing from the generator (5) into the concentrated solution bladder (6). The generator (5) is connected to the heat exchanger (4) through a third pipe, and a three-way valve (20) is provided on the third pipe. The heat exchanger (4) is connected to the dilute solution bladder (2) through a fourth pipe, and a generator pump (3) is provided on the fourth pipe.

2. The steam condensate heat utilization device according to claim 1, characterized in that: A baffle plate (7) and a condenser (8) are provided above the generator (5), and a condenser water pan (9) is provided below the condenser (8).

3. The steam condensate heat utilization device according to claim 2, characterized in that: The condenser water pan (9) is connected to the evaporator (11) through a U-shaped pipe (10), and the evaporator water pan (12) is set below the evaporator (11).

4. The steam condensate heat utilization device according to claim 3, characterized in that: The evaporator water pan (12) is connected to the water bag (13) through the fifth pipe, and the water bag (13) is connected to the spray system (15) inside the evaporator (11) through the sixth pipe. An evaporator pump (14) is installed on the sixth pipe.

5. The steam condensate heat utilization device according to claim 4, characterized in that: The evaporator (11) is equipped with a baffle plate (16) to allow the refrigerant water vapor formed by vaporization in the evaporator to enter the absorber (1).

6. The steam condensate heat utilization device according to claim 1, characterized in that: The concentrated solution capsule (6) is connected to the solution spraying system (18) via a seventh pipe, on which an absorber pump (17) is installed.

7. The steam condensate heat utilization device according to claim 1, characterized in that: The generator (5) is connected to the concentrated solution overflow pipe (21) and the concentrated solution bladder (6).

8. The steam condensate heat utilization device according to claim 1, characterized in that: The device also includes an air extraction device (22).

Images