A heating device and a heating method

Abstract

The present application discloses a heating device and a heating method. The heating device includes a heat source, an evaporator, and a condenser. The first water inlet of the evaporator is used to receive high-temperature hot water from the heat source; the first water outlet of the evaporator is used to output the high-temperature hot water with reduced temperature after heat exchange in the evaporator to the heat network water supply port; the second water inlet of the evaporator is used to receive wastewater to be treated; the second water outlet of the evaporator is used to discharge the wastewater concentrate; the steam outlet of the evaporator is used to output steam; the first water inlet of the condenser is used to receive low-temperature return water from the heat network; the first water outlet of the condenser is used to transport the low-temperature return water with increased temperature after heat exchange in the condenser to the heat source water inlet; the steam inlet of the condenser is used to receive steam; the condensate outlet of the condenser is used to output the condenser condensate formed by condensation of steam in the condenser. The heating device of the present application combines wastewater treatment with heating, realizes wastewater purification while heating, and greatly reduces the energy consumption cost.

Description

Technical Field

[0001] This application relates to the technical fields of heating and environmental protection, and particularly to a heating device and a heating method. Background Art

[0002] With the rapid development of the economic society and the continuous advancement of the urbanization process, wastewater (sewage) treatment and water resource shortage have become two important factors restricting the sustainable development of the social economy. However, the purification cost of wastewater (sewage) in the existing technology is generally high, which greatly affects the purification and reuse of wastewater (sewage).

[0003] In the field of central heating, the purification treatment of wastewater (sewage) is also an important link in water resource reuse. However, how to effectively reduce the purification treatment cost of wastewater (sewage) is still an area that urgently needs in-depth research in this field. Summary of the Invention

[0004] (I) Object of the Invention

[0005] The object of this application is to provide a heating device to effectively reduce the purification treatment cost of wastewater.

[0006] (II) Technical Solution

[0007] In a first aspect, an embodiment of this application provides a heating device, including:

[0008] A heat source, including a heat source water inlet and a heat source water outlet;

[0009] An evaporator, including a first water inlet of the evaporator, a first water outlet of the evaporator, a second water inlet of the evaporator, a second water outlet of the evaporator, and an evaporator steam outlet; the first water inlet of the evaporator is connected to the heat source water outlet for receiving the high-temperature hot water of the heat source; the first water outlet of the evaporator is connected to the heat supply port of the heat network for outputting the high-temperature hot water with a reduced temperature after heat exchange by the evaporator to the heat supply port of the heat network; the second water inlet of the evaporator is used for receiving the wastewater to be treated; the second water outlet of the evaporator is used for discharging the wastewater concentrate formed by evaporation of the wastewater to be treated; the evaporator steam outlet is used for outputting the steam formed by evaporation of the wastewater to be treated;

[0010] The condenser includes a first water inlet of the condenser, a first water outlet of the condenser, a steam inlet of the condenser, and a condensate outlet of the condenser. The first water inlet of the condenser is connected to the return water inlet of the heat network for receiving the low-temperature return water from the heat network. The first water outlet of the condenser is connected to the heat source water inlet for delivering the low-temperature return water with increased temperature after heat exchange in the condenser to the heat source water inlet. The steam inlet of the condenser is connected to the steam outlet of the evaporator for receiving the steam. The condensate outlet of the condenser is used to output the condenser condensate formed by condensing the steam in the condenser.

[0011] In a second aspect, an embodiment of the present application provides another heating device, including

[0012] a heat source including a heat source water inlet and a heat source water outlet;

[0013] a multi-stage evaporator, each stage of the multi-stage evaporator includes a first water inlet of the evaporator, a first water outlet of the evaporator, a second water inlet of the evaporator, a second water outlet of the evaporator, and a steam outlet of the evaporator. The first water inlet and the first water outlet of the first-stage evaporator of the multi-stage evaporation are respectively connected to the heat source water outlet and the heat supply port of the heat network. The first water inlet of the evaporator is used to receive the high-temperature hot water of the heat source, and the first water outlet of the evaporator is used to output the high-temperature hot water with decreased temperature after heat exchange in the evaporator to the heat supply port of the heat network. The second water inlet of the evaporator is used to receive the wastewater to be treated. The second water outlet of the evaporator is used to discharge the concentrated wastewater formed by evaporating the wastewater to be treated. The steam outlet of the evaporator is used to output the steam formed by evaporating the wastewater to be treated. Starting from the second stage, the first water inlet of the evaporator is converted into a steam inlet of the evaporator, and the first water outlet is converted into a condensate outlet of the evaporator. The steam inlet of the evaporator is connected to the steam outlet of the previous-stage evaporator;

[0014] The condenser includes a first water inlet of the condenser, a first water outlet of the condenser, a steam inlet of the condenser, and a condensate outlet of the condenser. The first water inlet of the condenser is connected to the return water inlet of the heat network for receiving the low-temperature return water from the heat network. The first water outlet of the condenser is connected to the heat source water inlet for delivering the low-temperature return water with increased temperature after heat exchange in the condenser to the heat source water inlet. The steam inlet of the condenser is connected to the steam outlet of the evaporator for receiving the steam. The condensate outlet of the condenser is used to output the condenser condensate formed by condensing the steam in the condenser.

[0015] In a third aspect, an embodiment of the present application provides a heating method, including:

[0016] Outputting high-temperature hot water through the heat source water outlet;

[0017] Receive the high-temperature hot water and the wastewater to be treated through an evaporator, and evaporate the wastewater to be treated with the high-temperature hot water to form steam and wastewater concentrate;

[0018] Make the return water of the heat network exchange heat with the steam through a condenser to form condenser condensate and the return water of the heat network after temperature rise.

[0019] (III) Beneficial effects

[0020] The beneficial effect of the technical solution of this application is that by combining wastewater purification with heating, while heating, the purification treatment of wastewater is realized, that is, the effective utilization of water resources is improved, and the energy consumption cost of wastewater purification can be effectively reduced. Description of the drawings

[0021] Figure 1 is a schematic structural diagram of an embodiment of the heating device of this application;

[0022] Figure 2 is a schematic structural diagram of another embodiment of the heating device of this application;

[0023] Figure 3 is Figure 2 a schematic structural diagram of the improved type of the embodiment;

[0024] Figure 4 is a schematic structural diagram of another embodiment of the heating device of this application;

[0025] Figure 5 is a schematic structural diagram of another embodiment of the heating device of this application;

[0026] Figure 6 is Figure 5 a schematic structural diagram of the improved type of the embodiment;

[0027] Figure 7 is a schematic structural diagram of another embodiment of the heating device of this application;

[0028] Figure 8 is a schematic flow diagram of the heating method of this application.

[0029] 10: Heat source; 11: Heat source water inlet; 12: Heat source water outlet.

[0030] 20: Evaporator; 21: Evaporator first water / steam inlet; 22: Evaporator first water / condensate outlet; 23: Evaporator second water inlet; 24: Evaporator second water outlet; 25: Evaporator steam outlet, 26: Evaporator third water inlet.

[0031] 30: Condenser; 31: First water inlet of the condenser; 32: First water outlet of the condenser; 33: Steam inlet of the condenser; 34: Condensate outlet of the condenser; 35: Second water inlet of the condenser.

[0032] 40: Flash tank; 41: Water inlet of the flash tank; 42: Steam outlet of the flash tank; 43: Water outlet of the flash tank.

[0033] 50: Heater; 51: Water inlet of the heater; 52: Steam inlet of the heater; 53: Water outlet of the heater.

[0034] 60: Heat exchanger; 61: First water inlet of the heat exchanger; 62: First water outlet of the heat exchanger; 63: Second water inlet of the heat exchanger; 64: Second water outlet of the heat exchanger. Detailed implementation manners

[0035] To make the objectives, technical solutions and advantages of this application clearer, the following further details this application in conjunction with the detailed implementation manners and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of this application. In addition, in the following descriptions, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of this application.

[0036] Obviously, the described embodiments are some but not all of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts fall within the scope of protection of this application.

[0037] In addition, the technical features involved in different implementation manners of this application described below can be combined with each other as long as they do not conflict with each other.

[0038] Figure 1 is a schematic structural diagram of an embodiment of the heat supply device of this application.

[0039] As Figure 1 shown, a heat supply device includes:

[0040] A heat source 10, including a heat source water inlet 11 and a heat source water outlet 12;

[0041] Evaporator 20, including an evaporator first water inlet 21, an evaporator first water outlet 22, an evaporator second water inlet 23, an evaporator second water outlet 24, and an evaporator steam outlet 25; the evaporator first water inlet 21 is connected to the heat source water outlet 12 to receive the high-temperature hot water of the heat source 10; the evaporator first water outlet 22 is connected to the heat network water supply port to output the high-temperature hot water with reduced temperature after heat exchange in the evaporator 20 to the heat network water supply port; the evaporator second water inlet 23 is used to receive the wastewater to be treated; the second water outlet 24 of the evaporator is used to discharge the wastewater concentrate formed by evaporation of the wastewater to be treated; the steam outlet 25 of the evaporator 20 is used to output the steam formed by evaporation of the wastewater to be treated;

[0042] Condenser 30, including a condenser first water inlet 31, a condenser first water outlet 32, a condenser steam inlet 33, and a condenser condensate outlet 34. The condenser first water inlet 31 is connected to the heat network return water port to receive the low-temperature return water from the heat network; the condenser first water outlet 32 is connected to the heat source water inlet 11 to transport the low-temperature return water with increased temperature after heat exchange in the condenser to the heat source water inlet 11; the condenser steam inlet 33 is connected to the evaporator steam outlet 25 to receive the steam; the condenser condensate outlet 34 is used to output the condenser condensate formed by condensation of the steam in the condenser 30.

[0043] In this embodiment, by combining wastewater purification with heating, wastewater purification treatment is realized while heating, which not only improves the effective utilization of water resources, but also effectively reduces the energy consumption cost of wastewater purification.

[0044] Specifically, the high-temperature hot water of the heat source 10 and the wastewater to be treated are introduced into the evaporator 20 together. Through evaporation treatment, the wastewater to be treated forms a concentrate and steam. Then the steam is introduced into the condenser 30 to form condenser condensate as a supplementary water source for the heat source, which not only saves water resources, but also avoids the energy cost in wastewater treatment.

[0045] Figure 2 It is a schematic structural diagram of another embodiment of the heating device of the present application.

[0046] As Figure 2 shown, a heating device includes:

[0047] Heat source 10, including a heat source water inlet 11 and a heat source water outlet 12;

[0048] Multi-stage evaporator, each stage of the multi-stage evaporator includes an evaporator first water inlet 21, an evaporator first water outlet 22, an evaporator second water inlet 23, an evaporator second water outlet 24 and an evaporator steam outlet 25; the evaporator first water inlet 21 and the evaporator first water outlet 22 of the first-stage evaporator of the multi-stage evaporation are respectively communicated with the heat source water outlet 12 and the heat network water supply port, the evaporator first water inlet 21 is used to receive the high-temperature hot water of the heat source 10, and the evaporator first water outlet 22 is used to output the high-temperature hot water with reduced temperature after heat exchange in the evaporator 20 to the heat network water supply port; the evaporator second water inlet 23 is used to receive the wastewater to be treated; the second water outlet 24 of the evaporator is used to discharge the wastewater concentrate formed by evaporation of the wastewater to be treated; the evaporator steam outlet 25 is used to output the steam formed by evaporation of the wastewater to be treated; starting from the second stage, the first water inlet 21 of the evaporator 20 is converted into an evaporator steam inlet 21, the first water outlet 22 is converted into an evaporator condensate outlet 22, and the evaporator steam inlet 21 is communicated with the evaporator steam outlet 25 of the previous-stage evaporator 20;

[0049] Condenser 30, including a condenser first water inlet 31, a condenser first water outlet 32, a condenser steam inlet 33 and a condenser condensate outlet 34, the condenser first water inlet 31 is communicated with the heat network return water port and is used to receive the low-temperature return water from the heat network; the condenser first water outlet 32 is communicated with the heat source water inlet 11 and is used to transport the low-temperature return water with increased temperature after heat exchange in the condenser to the heat source water inlet 11; the condenser steam inlet 33 is communicated with the evaporator steam outlet 25 and is used to receive the steam; the condenser condensate outlet 34 is used to output the condenser condensate formed by condensation of the steam in the condenser 30.

[0050] In some embodiments, such as Figure 2As shown, taking a three-stage evaporator as an example, the 1st, 2nd, and 3rd stage evaporators each include a first water inlet 21 of the evaporator, a first water outlet 22 of the evaporator, a second water inlet 23 of the evaporator, a second water outlet 24 of the evaporator, and a steam outlet 25. The first water inlet 21 of the 2nd and 3rd stage evaporators is converted into a steam inlet 21 of the evaporator, and the first water outlet 22 of the evaporator is converted into a condensate outlet 22 of the evaporator. The steam inlets 21 of the 2nd and 3rd stage evaporators are respectively connected to the steam outlets 25 of the 1st and 2nd stage evaporators 20. The steam outlet 25 of the 3rd stage evaporator is connected to the steam inlet 33 of the condenser 30, for sending the steam formed in the evaporator 20 into the condenser 30, and after condensation treatment, condenser condensate is formed. In some embodiments, if the multi-stage evaporator is a multi-stage evaporator with 4, 5, 6, or even more than 10 stages, the 1st stage and the last stage are the same as the 1st stage and the last stage of the aforementioned three-stage evaporator, the settings of the intermediate stages are the same, and are the same as the settings of the 2nd stage of the aforementioned three-stage evaporator. If it is a two-stage case, the 1st stage and the 2nd stage are respectively the same as the 1st stage and the last stage of the aforementioned three-stage evaporator. Regarding the specific number of stages, the inventive concept of the present application is not limited thereto.

[0051] Figure 3 is Figure 2 Schematic structural diagram of the improved embodiment.

[0052] In some embodiments, such as Figure 3 As shown, the condenser 30 further includes a second water inlet 35 of the condenser, which is connected to the condensate outlet 22 of at least one stage of the evaporator 30 in the multi-stage evaporator, for receiving the evaporator condensate discharged from the multi-stage evaporator. After the heat of the evaporator condensate is released through heat exchange in the condenser 30, it is discharged from the condensate outlet 34 of the condenser 30.

[0053] In some embodiments, such as Figure 3 As shown, the condensate outlets 22 of each stage of the evaporator 20 starting from the second stage of the multi-stage evaporator are connected in parallel and then connected to the second water inlet 35 of the condenser 30, for outputting the evaporator condensate formed by each stage of the evaporator 20 starting from the second stage to the condenser 30.

[0054] In some embodiments, such as Figure 3As shown, the multi-stage evaporator, starting from the second stage, each stage evaporator also includes a third water inlet 26 of the evaporator, and the third water inlet 26 of the evaporator is connected to the second water outlet 24 of the evaporator of the previous stage, wherein the second water outlet 24 of the evaporator of the last stage evaporator 20 is connected to the concentrated liquid inlet for receiving the wastewater concentrated liquid outside the heating device. In the case where the third water inlet 26 of the evaporator is provided, after the wastewater to be treated is respectively sent to each stage evaporator 20 through the second water inlet 23 of the evaporator connected in parallel, the wastewater concentrated liquid formed by evaporation, starting from the first stage evaporator, respectively enters the evaporator 20 of the next stage through the third water inlet 26 of the evaporator to continue evaporation treatment, and the wastewater concentrated liquid finally formed is only discharged from the second water outlet 24 of the evaporator of the last stage evaporator 20.

[0055] Figure 4 It is a structural schematic diagram of another embodiment of the heating device of the present application.

[0056] In some embodiments, such as Figure 4 As shown, the multi-stage evaporator starts from the second-stage evaporator and does not include the last-stage evaporator. The evaporator condensate outlet 22 of each stage evaporator 20 is connected to a flash tank 40. The flash tank water inlet 41 of the flash tank 40 is connected to the evaporator condensate outlet 22 of the evaporator 20 of this stage; the flash tank steam outlet 42 of the flash tank 40 is connected to the evaporator steam inlet 21 of the next stage evaporator 20; the flash tank water outlet 43 of the flash tank 40 discharges the evaporator condensate with the temperature reduced after flash evaporation.

[0057] The flash tank 40 includes a flash tank water inlet 41, which is connected to the condensate outlet of the evaporator at this stage and is used to receive the evaporator condensate formed in the evaporator at this stage; a flash tank steam outlet 42, which is connected to the steam inlet of the next stage evaporator and is used to output the flashed steam to the next stage evaporator; and a flash tank water outlet 43, which is used to discharge the evaporator condensate whose temperature is reduced after flash evaporation.

[0058] In some embodiments, such as Figure 4As shown, taking a three-stage evaporator as an example, the 1st, 2nd, and 3rd stage evaporators all include a first water inlet 21 of the evaporator, a first water outlet 22 of the evaporator, a second water inlet 23 of the evaporator, a second water outlet 24 of the evaporator, and a steam outlet 25. The first water inlet 21 of the 2nd and 3rd stage evaporators is converted into a steam inlet 21 of the evaporator, and the first water outlet 22 of the evaporator is converted into a condensate outlet 22 of the evaporator. The steam inlets 21 of the 2nd and 3rd stage evaporators are respectively connected to the steam outlets 25 of the 1st and 2nd stage evaporators 20. The steam outlet 25 of the 3rd stage evaporator is connected to the steam inlet 33 of the condenser 30, for sending the steam formed in the evaporator 20 into the condenser 30, and forming condenser condensate after condensation treatment. Among them, the 2nd stage evaporator is connected with a flash tank 40, and the condensate outlet 22 of the evaporator is connected to the water inlet 41 of the flash tank 40, for transporting the evaporator condensate formed in the 2nd stage evaporator to the flash tank 40. The steam formed after the flash tank 40 flashes the evaporator condensate is transported to the steam inlet 21 of the 3rd stage evaporator through the steam outlet 42 of the flash tank 40, and the evaporator condensate with further reduced temperature after flashing is discharged through the water outlet 43 of the flash tank. In some embodiments, if the multi-stage evaporator is a multi-stage evaporator with 4, 5, 6, or even more than 10 stages, the 1st stage and the last stage are the same as the 1st stage and the last stage of the aforementioned three-stage evaporator, the settings of the intermediate stages are the same, and are the same as the setting of the 2nd stage of the aforementioned three-stage evaporator. If it is a two-stage case, the 1st stage and the 2nd stage are respectively the same as the 1st stage and the last stage of the aforementioned three-stage evaporator. At this time, for the two-stage evaporator, the flash tank 60 is not connected. Regarding the specific number of stages, the inventive concept of the present application is not limited thereto.

[0059] In some embodiments, when a multi-stage flash tank 40 is connected in the multi-stage evaporator 20, the water outlet 43 of the flash tank is connected to the water inlet 41 of the next-stage flash tank, and the water outlet 43 of the last-stage flash tank 40, the condensate outlet 22 of the last-stage evaporator 20, and the condensate outlet 34 of the condenser 30 are in parallel, that is, the condensate formed jointly after the three water outlets are in parallel is used as net water resources to supplement the heat source or for other uses.

[0060] In some embodiments, the water outlet 43 of the previous-stage flash tank 40 is connected to the water inlet 41 of the next-stage flash tank, and the evaporator condensate in each stage of the flash tank 40 is output from front to back.

[0061] Figure 5 It is a schematic structural diagram of another embodiment of the heating device of the present application.

[0062] In some embodiments, such as Figure 5As shown, starting from the second-stage evaporator, for each stage of the evaporator 20, a heater 50 is connected to the evaporator steam outlet 25. The heater water inlet 51 of the heater 50 is connected to the evaporator condensate outlet 22 of the subsequent stage of the evaporator 20; the heater steam inlet 52 of the heater 50 is connected to the evaporator steam outlet 25 of the current stage of the evaporator 20; the heater water outlet 53 of the heater 50 outputs the evaporator condensate that has absorbed the heat of the steam.

[0063] Wherein the heater 50 includes a heater water inlet 51, which is connected to the evaporator condensate outlet 22 of the subsequent stage of the evaporator 20 and is used to receive the evaporator condensate formed in the subsequent stage of the evaporator 20; a heater steam inlet 52, which is connected to the steam outlet 25 of the current stage of the evaporator 20 and is used to receive the steam discharged from the current stage of the evaporator 20; and a heater water outlet 53, which is used to output the evaporator condensate that has absorbed the heat of the steam.

[0064] In some embodiments, as Figure 5 shown, taking a three-stage evaporator as an example, the 1st, 2nd, and 3rd stage evaporators each include an evaporator first water inlet 21, an evaporator first water outlet 22, an evaporator second water inlet 23, an evaporator second water outlet 24, and a steam outlet 25. The evaporator first water inlets 21 of the 2nd and 3rd stage evaporators are converted into evaporator steam inlets 21, and the evaporator first water outlets 22 are converted into evaporator condensate outlets 22. The evaporator steam inlets 21 of the 2nd and 3rd stage evaporators are respectively connected to the evaporator steam outlets 25 of the 1st and 2nd stage evaporators 20. The evaporator steam outlet 25 of the 3rd stage evaporator is connected to the condenser steam inlet 33 of the condenser 30, which is used to send the steam formed in the evaporator 20 into the condenser 30 for condensation treatment to form condenser condensate. Only a heater 50 is connected to the steam outlet 25 of the 2nd stage evaporator 20, and this heater 50 heats the evaporator condensate output from the 3rd stage evaporator with the steam output from the 2nd stage evaporator 20, and then outputs the evaporator condensate with increased temperature from the heater water outlet 53.

[0065] Figure 6 is Figure 5 a schematic structural diagram of an improved type of the embodiment.

[0066] Compared with Figure 5 the embodiment shown, Figure 6 in the embodiment, a heater 50 is also connected to the steam outlet 25 of the last stage evaporator 20 of the multi-stage evaporator. And in the case of having multiple stages of heaters 50, the heater water outlet 53 of the subsequent stage of the heater 50 is connected to the heater water inlet 51 of the previous stage of the heater 50, which is used to output the hot water formed in each stage of the heater from the back to the front.

[0067] In some embodiments, asFigure 6 As shown, the condenser condensate outlet 34 of the condenser 30 is communicated with the heater water inlet 51 of the last-stage heater 50, and is used to feed the condenser condensate formed in the condenser 30 into the last-stage heater 50 for heating.

[0068] In some embodiments, such as Figure 6 As shown, taking a three-stage evaporator as an example, the 1st, 2nd, and 3rd stage evaporators each include an evaporator first water inlet 21, an evaporator first water outlet 22, an evaporator second water inlet 23, an evaporator second water outlet 24, and a steam outlet 25. The evaporator first water inlets 21 of the 2nd and 3rd stage evaporators are converted into evaporator steam inlets 21, and the evaporator first water outlets 22 are converted into evaporator condensate outlets 22. The evaporator steam inlets 21 of the 2nd and 3rd stage evaporators are respectively communicated with the evaporator steam outlets 25 of the 1st and 2nd stage evaporators 20. The evaporator steam outlet 25 of the 3rd stage evaporator is communicated with the condenser steam inlet 33 of the condenser 30, and is used to feed the steam formed in the evaporator 20 into the condenser 30, and after condensation treatment, condenser condensate is formed. Among them, heaters 50 are connected to the steam outlets 25 of the 2nd and 3rd stage evaporators 20. The heater water inlet 51 of the heater 50 of the 3rd stage evaporator is communicated with the condenser condensate outlet 34 of the condenser 30, and is used to receive the condenser condensate formed in the condenser 30. The heater water inlet 51 of the heater 50 of the 2nd stage evaporator is respectively communicated with the heater water outlet 53 of the heater 50 of the 3rd stage evaporator and the condensate outlet 22 of the 3rd stage evaporator 30, and simultaneously receives the heated water formed by the subsequent-stage heater 50 and the evaporator condensate discharged from the subsequent-stage evaporator 30, and after being heated together, outputs to the heater 50 of the subsequent-stage evaporator 20. In some embodiments, if the multi-stage evaporator is a multi-stage evaporator with 4, 5, 6, or even more than 10 stages, the 1st stage and the last stage are the same as the 1st stage and the last stage of the aforementioned three-stage evaporator, the settings of the intermediate stages are the same, and are the same as the settings of the 2nd stage of the aforementioned three-stage evaporator. If it is a two-stage case, the 1st stage and the 2nd stage are respectively the same as the 1st stage and the last stage of the aforementioned three-stage evaporator. At this time, for the two-stage evaporator, a heater 50 can be connected to the 2nd stage evaporator. Regarding the specific number of stages, the inventive concept of the present application is not limited thereto.

[0069] Figure 7 It is a schematic structural diagram of another embodiment of the heating device of the present application.

[0070] In some embodiments, such as Figure 7As shown, the heat supply device also includes a heat exchanger 60, wherein the first water inlet 61 of the heat exchanger 60 is connected with the condenser condensate outlet 34 of the condenser, and is used to receive the condenser condensate discharged from the condenser; the first water outlet 62 of the heat exchanger is used to discharge the condenser condensate whose temperature is reduced after heat exchange; the second water inlet 63 of the heat exchanger is used to receive the wastewater to be treated; the second water outlet 64 of the heat exchanger is connected with the evaporator second water inlet 23 of the evaporator, and is used to output the wastewater to be treated whose temperature is increased after heat exchange to the evaporator 20.

[0071] The heat exchanger 60 includes a first water inlet 61 of the heat exchanger, which is connected to the condenser condensate outlet 34 of the condenser 30 and is used to receive the condenser condensate of the condenser; a first water outlet 62 of the heat exchanger, which is used to discharge the condenser condensate whose temperature is reduced after heat exchange; a second water inlet 63 of the heat exchanger, which is connected to the wastewater outlet of the wastewater to be treated outside the heating device and is used to receive the wastewater to be treated; and a second water outlet 64 of the heat exchanger, which is connected to the evaporator second water inlet 23 of the evaporator 20 and is used to send the wastewater to be treated whose temperature is increased after heat exchange into the evaporator 20.

[0072] Figure 8 It is a flow chart of the heating method of the present application.

[0073] like Figure 8 As shown, a heating method comprises:

[0074] S110: output high temperature water through a heat source;

[0075] S120: receiving the high-temperature hot water and the wastewater to be treated through an evaporator, and treating the wastewater to be treated by evaporating the high-temperature hot water;

[0076] S130: using the return water from the heating network to condense the steam outputted from the evaporator in a condenser to form condensed water for the condenser, and using the steam to heat the return water from the heating network and then supply it to the heat source.

[0077] In some embodiments, the evaporator is a multi-stage evaporator. Starting from the second stage, the first water inlet of the evaporator is converted to an evaporator steam inlet, the first water outlet is converted to an evaporator condensed water outlet, and the evaporator steam inlet is connected to the evaporator steam outlet of the previous stage evaporator.

[0078] In some embodiments, starting from the second-stage evaporator and excluding the last-stage evaporator, the evaporator condensate outlet of each stage of the evaporator is connected to a flash tank, and the evaporator condensate formed by the evaporator of this stage is flashed by the flash tank, and the generated steam is output to the next-stage evaporator.

[0079] In some embodiments, starting from the second-stage evaporator, a heater is connected to the evaporator steam outlet of each stage of the evaporator. The heater receives the steam discharged from the current-stage evaporator and the evaporator condensate discharged from the subsequent-stage evaporator, and releases the heat of the steam to the evaporator condensate through heat exchange.

[0080] It should be understood that the above specific embodiments of the present application are only for illustrative explanation or interpretation of the principle of the present application, and do not constitute a limitation on the present application. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present application shall be included within the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A heating device, characterized in that, Comprising: A heat source, including a heat source water inlet and a heat source water outlet; A multi-stage evaporator, each stage of the multi-stage evaporator includes an evaporator first water inlet, an evaporator first water outlet, an evaporator second water inlet, an evaporator second water outlet, and an evaporator steam outlet; the evaporator first water inlet and the evaporator first water outlet of the first-stage evaporator of the multi-stage evaporator are respectively connected to the heat source water outlet and the heat network water supply port, the evaporator first water inlet is used to receive the high-temperature hot water of the heat source, and the evaporator first water outlet is used to output the high-temperature hot water with reduced temperature after heat exchange in the evaporator to the heat network water supply port; the evaporator second water inlet is used to receive the wastewater to be treated; the second water outlet of the evaporator is used to discharge the wastewater concentrate formed by evaporation of the wastewater to be treated; the evaporator steam outlet is used to output the steam formed by evaporation of the wastewater to be treated; starting from the second stage, the first water inlet of the evaporator is converted into an evaporator steam inlet, and the first water outlet is converted into an evaporator condensate outlet, and the evaporator steam inlet is connected to the evaporator steam outlet of the previous-stage evaporator; A condenser, including a condenser first water inlet, a condenser first water outlet, a condenser steam inlet, and a condenser condensate outlet, the condenser first water inlet is connected to the heat network return water port, and is used to receive the low-temperature return water from the heat network; the condenser first water outlet is connected to the heat source water inlet, and is used to transport the low-temperature return water with increased temperature after heat exchange in the condenser to the heat source water inlet; the condenser steam inlet is connected to the evaporator steam outlet, and is used to receive the steam; the condenser condensate outlet is used to output the condenser condensate formed by condensation of the steam in the condenser; Starting from the second-stage evaporator of the multi-stage evaporator, a heater is connected to the evaporator steam outlet of each stage of the evaporator, and the heater water inlet of the heater is connected to the evaporator condensate outlet of the subsequent-stage evaporator; the heater steam inlet of the heater is connected to the evaporator steam outlet of the current stage of the evaporator; the heater water outlet of the heater outputs the evaporator condensate that has absorbed the heat of the steam.

2. The heating device according to claim 1, characterized in that, Starting from the second stage, each stage of the multi-stage evaporator further includes an evaporator third water inlet, which is connected to the second water outlet of the previous-stage evaporator to receive the concentrate discharged from the previous-stage evaporator.

3. The heating device according to claim 1, characterized in that, The condenser condensate outlet of the condenser is connected to the heater water inlet of the last-stage heater, and the condenser condensate formed in the condenser is sent into the last-stage heater through the heater water inlet.

4. The heating device according to claim 1, characterized in that, The heater water outlet of the subsequent-stage heater is connected to the heater water inlet of the previous-stage heater, and the hot water formed in each stage of the heater is output from the back to the front through the heater water inlet and the heater water outlet of the front and rear heaters.

5. The heating device according to any one of claims 1-4, characterized in that, It further includes a heat exchanger. A first water inlet of the heat exchanger is communicated with a condensate water outlet of the condenser to receive the condensate water discharged from the condenser. A first water outlet of the heat exchanger is used to discharge the condensate water of the condenser with a reduced temperature after heat exchange. A second water inlet of the heat exchanger is used to receive the wastewater to be treated. A second water outlet of the heat exchanger is communicated with a second water inlet of the evaporator to output the wastewater to be treated with an increased temperature after heat exchange to the evaporator.

6. A heating method, characterized in that, Performed by the heating device according to any one of claims 1-5, it includes: outputting high-temperature hot water through a heat source water outlet; receiving the high-temperature hot water and the wastewater to be treated through the evaporator, and evaporating and treating the wastewater to be treated with the high-temperature hot water to form steam and wastewater concentrate; enabling the return water of the heat network to exchange heat with the steam through the condenser to form condensate water of the condenser and the return water of the heat network with an increased temperature.

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