Hot-pressing type distilled water preparation device adopting heat pump energy recovery

Abstract

The utility model discloses a hot-pressing type distilled water preparation device adopting heat pump energy recovery, which comprises a hot-pressing type distilled water preparation assembly, an energy recovery water source ultra-high temperature heat pump system and a control assembly, and the control assembly comprises a water pipeline and a control valve. The hot-pressing type distilled water preparation assembly comprises a first heat exchanger, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, a high-temperature water pump, a distilled water preparation body, a steam compressor, a steam removal water pump and a steam removal device. Afterwards, waste heat is recycled through an ultrahigh-temperature heat pump unit, high-temperature hot water is prepared, pure water is heated by the high-temperature hot water through a primary heater and a secondary heater, then the pure water is conveyed into a hot-pressing type distilled water preparation circulating system, supply of industrial steam is reduced, and finally the requirements for energy conservation, low carbon emission and water resource conservation are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of distilled water preparation, especially to a hot-press type distilled water preparation device using heat pump energy recovery. BACKGROUND

[0002] The current energy structure is still mainly coal, which is difficult to replace, and the development of non-fossil energy is subject to multiple constraints. The problems of high energy consumption, high emission and low energy efficiency coexist in the industry, and green and low-carbon technology needs to be strengthened. Industrial process heating accounts for about 50% of energy consumption, so achieving low carbonization of industrial process heating is an important part of carbon neutralization.

[0003] The current industry has complete categories, but the scale, facilities and technical reserves are uneven, and the reuse rate of industrial water above scale is still lagging behind the international advanced level. With China's efforts to promote efficient recycling of industrial wastewater, it has become a key to promoting green development and alleviating water supply and demand contradictions.

[0004] The conventional hot-press type distilled water preparation needs a continuous supply of industrial steam to stabilize the production of injection water.

[0005] The hot-press type distilled water preparation needs to exchange heat between condensate and pure water during the working process, so a large amount of condensate is consumed to achieve the purpose of heat exchange. At the same time, a large amount of low-temperature waste heat is generated in the discharged condensate and sewage during production. These low-temperature waste heat contains a large amount of energy, but due to the low temperature of the energy, it is difficult to be directly utilized in the actual production process. These waste heat is discharged to the environment through the wastewater system, causing a lot of waste heat waste, and also causing the need to use too much industrial water to improve production. At the same time, more energy is burned and industrial water is supplied in the production of condensate, causing waste of energy and water resources and other problems. SUMMARY

[0006] The utility model aims at at least in a certain extent solves one of the technical problems in the prior art.

[0007] Therefore, the utility model aims at providing a hot-press type distilled water preparation device using heat pump energy recovery, which recycles waste heat through an ultra-high temperature heat pump unit to produce high-temperature hot water. The high-temperature hot water is heated by a primary and secondary heater, and then the pure water is sent into a hot-press type distilled water preparation circulation system, reducing the supply of industrial steam, and finally achieving the requirements of energy saving, low carbon emission and water resource saving.

[0008] To achieve the above object, the utility model provides a kind of hot-press type distilled water preparation device using heat pump energy recovery, including hot-press type distilled water preparation component, energy recovery water source superhigh temperature heat pump system and control component, wherein, the control component includes water pipeline and control valve;The hot-press type distilled water preparation component includes first heat exchanger, second heat exchanger, third heat exchanger, fourth heat exchanger, high temperature water pump, distilled water preparation body, steam compressor, steam removal pump and steam removal device, wherein, the first heat exchanger is connected soft water supply end by the water pipeline;The second heat exchanger is connected the first heat exchanger by the water pipeline;The third heat exchanger is connected the second heat exchanger by the water pipeline;The fourth heat exchanger is connected the third heat exchanger by the water pipeline;The water inlet and outlet port of the high temperature water pump is connected the fourth heat exchanger and the distilled water preparation body respectively;The steam compressor connects the distilled water preparation body;The steam removal pump is connected the steam compressor by the water pipeline;The steam removal device is arranged on the steam removal pump;The waste heat water tank of the energy recovery water source superhigh temperature heat pump system is connected the second heat exchanger and the third heat exchanger respectively by the water pipeline.

[0009] The hot-press type distilled water preparation device using heat pump energy recovery of the utility model recycles waste heat by using superhigh temperature heat pump unit, produces high-temperature hot water, and the high-temperature hot water is heated by primary and secondary heaters, and then is sent into hot-press type distilled water preparation circulation system, reduces industrial steam supply, and finally realizes the requirements of energy saving, low carbon emission and water resource saving.

[0010] In addition, the hot-press type distilled water preparation device using heat pump energy recovery according to the above application can further have the following additional technical features.

[0011] Specifically, the energy recovery water source superhigh temperature heat pump system includes a waste heat water tank, a first load circulation pump, a superhigh temperature heat pump unit, a second load circulation pump, a hot water tank, a hot water circulation pump, a primary heater, a secondary heater, and a valve, wherein the water inlet end of the waste heat water tank is connected to the second heat exchanger and the third heat exchanger through the water pipeline respectively; the first load circulation pump is arranged on the waste heat water tank; the superhigh temperature heat pump unit is connected to the first load circulation pump through the water pipeline; the second load circulation pump is connected to the superhigh temperature heat pump unit through the water pipeline; the water inlet port of the hot water tank is connected to the second load circulation pump through the water pipeline; the hot water circulation pump is connected to the water outlet port of the hot water tank through the water pipeline; the primary heater and the secondary heater are connected in sequence through the water pipeline; the primary heater is connected to the hot water circulation pump through the water pipeline, and the secondary heater is connected to the hot water tank through the water pipeline.

[0012] Specifically, the second heat exchanger is connected with a sewage pool, the third heat exchanger is connected with a condensate pool, and the fourth heat exchanger is connected with an industrial steam conveying pipeline.

[0013] Specifically, a heating pipe is arranged in the inner cavity of the distilled water preparation body, a demister is arranged on the top wall of the inner cavity of the distilled water preparation body, and a water storage tank is arranged at the bottom of the inner cavity of the distilled water preparation body, and the water storage tank is connected with the water conveying pipeline and the steam removal pump.

[0014] The additional aspects and advantages of the present application will be partially given in the following description, and some will become apparent from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0016] Figure 1 The structure schematic diagram of the hot-press type distilled water preparation device adopting heat pump energy recovery of an embodiment of the present application.

[0017] As shown in the figure: 1, hot-press type distilled water preparation assembly; 1-1, first heat exchanger; 1-2, second heat exchanger; 1-3, third heat exchanger; 1-4, fourth heat exchanger; 1-5, high-temperature water pump; 1-6, distilled water preparation body; 1-7, steam compressor; 1-8, steam removal pump; 1-9, steam removal device; 2, energy recovery water source ultra-high temperature heat pump system; 2-1, waste heat water tank; 2-2, first load circulating pump; 2-3, ultra-high temperature heat pump unit; 2-4, second load circulating pump; 2-5, hot water tank; 2-6, hot water circulating pump; 2-7, primary heater; 2-8, secondary heater; 2-9, valve; 3, control assembly. DETAILED DESCRIPTION

[0018] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

[0019] The hot-press type distilled water preparation device adopting heat pump energy recovery of the embodiments of the present application is described below in combination with the drawings.

[0020] As Figure 1As shown, the hot-press type distilled water preparation device adopting heat pump energy recovery comprises a hot-press type distilled water preparation assembly 1, an energy recovery water source ultra-high temperature heat pump system 2 and a control assembly 3.

[0021] It should be noted that the water pipeline and the control valve in the control assembly 3 are installed in the hot-press type distilled water preparation assembly 1 and the energy recovery water source ultra-high temperature heat pump system 2, and the hot-press type distilled water preparation assembly 1 and the energy recovery water source ultra-high temperature heat pump system 2 are connected together.

[0022] The control assembly 3 comprises a water pipeline and a control valve, and the hot-press type distilled water preparation assembly 1 comprises a first heat exchanger 1-1, a second heat exchanger 1-2, a third heat exchanger 1-3, a fourth heat exchanger 1-4, a high-temperature water pump 1-5, a distilled water preparation body 1-6, a steam compressor 1-7, a deaeration water pump 1-8 and a deaeration device 1-9.

[0023] The first heat exchanger 1-1 is connected with a soft water supply end through the water pipeline, the second heat exchanger 1-2 is connected with the first heat exchanger 1-1 through the water pipeline, the third heat exchanger 1-3 is connected with the second heat exchanger 1-2 through the water pipeline, and the fourth heat exchanger 1-4 is connected with the third heat exchanger 1-3 through the water pipeline.

[0024] It should be noted that the first heat exchanger 1-1 in this embodiment performs first heating on the low-temperature pure water injected therein and the waste water discharged by the deaeration water pump 1-8, then performs second heating on the waste water entering the second heat exchanger 1-2 and the condensed water entering the third heat exchanger 1-3, and finally performs fourth heating on the pure water in the fourth heat exchanger 1-4 through industrial steam, so that the pure water reaches a certain high temperature.

[0025] The inlet and outlet water ports of the high-temperature water pump 1-5 are connected with the fourth heat exchanger 1-4 and the distilled water preparation body 1-6 respectively; the fourth heat exchanger 1-4 is further connected with a waste water discharge pipeline for discharging the waste water after heat exchange.

[0026] It should be noted that the high-temperature pure water after multiple heating is delivered by the high-temperature water pump 1-5 to the spray pipe in the distilled water preparation body 1-6, and then the high-temperature pure water is sprayed on the outer surface of the heating pipe of the distilled water preparation body 1-6, so that the pure water evaporates, and the pure water evaporates and boils into steam. The steam is subjected to water vapor separation process in the demister at the upper part of the inner cavity of the distilled water preparation body 1-6. The separated liquid water drops to the bottom of the inner cavity of the distilled water preparation body 1-6 for storage under the action of gravity, and the pure steam is absorbed and compressed into high-temperature and high-pressure superheated steam by the steam compressor 1-7, and the superheated steam is delivered to the heating pipe of the distilled water preparation body 1-6 to provide continuous high-temperature heat for the distilled pure water outside the pipe. The high-temperature and high-pressure pure steam in the pipe condenses into injection water under the condensation of the pure water outside the pipe at low temperature. The liquid injection water gathered at the bottom of the inner cavity of the distilled water preparation body 1-6 is separated from the non-condensable gas by the steam removal device 1-9. The injection water after steam removal is delivered by the steam removal pump 1-8 to the injection water storage system after being cooled by the first heat exchanger 1-1. The system sewage is discharged through the pipeline through the second heat exchanger 1-2, and the industrial steam and the condensed water after heat exchange through the third heat exchanger 1-3 are discharged through the pipeline. Through the above-mentioned repeated operation, the required injection water is continuously prepared.

[0027] In an embodiment of the present application, as shown in Figure 1 The energy recovery water source ultra-high temperature heat pump system 2 includes a waste heat water tank 2-1, a first load circulating pump 2-2, an ultra-high temperature heat pump unit 2-3, a second load circulating pump 2-4, a hot water tank 2-5, a hot water circulating pump 2-6, a primary heater 2-7, a secondary heater 2-8, and a valve 2-9.

[0028] The collection water end of the waste heat water tank 2-1 is connected to the second heat exchanger 1-2 and the third heat exchanger 1-3 through water pipelines, the first load circulating pump 2-2 is connected to the waste heat water tank 2-1 through a pipeline, and the ultra-high temperature heat pump unit 2-3 is connected to the first load circulating pump 2-2 through a water pipeline. The second load circulating pump 2-4 is connected to the ultra-high temperature heat pump unit 2-3 through a water pipeline, the water inlet port of the hot water tank 2-5 is connected to the second load circulating pump 2-4 through a water pipeline, and the hot water circulating pump 2-6 is connected to the water outlet port of the hot water tank 2-5 through a water pipeline. The primary heater 2-7 and the secondary heater 2-8 are connected in sequence through water pipelines, the primary heater 2-7 is connected to the hot water circulating pump 2-6 through a water pipeline, and the secondary heater 2-8 is connected to the hot water tank 2-5 through a water pipeline.

[0029] It should be noted that the low-temperature wastewater and condensate water discharged in the preparation of the hot-press distillation water are collected into the waste heat tank 2-1, transported to the ultra-high temperature heat pump unit 2-3 by the first load circulating pump 2-2, converted into high-temperature hot water, and then transported to the hot water tank 2-5 by the second load circulating pump 2-4, and the wastewater with reduced temperature after absorbing heat by the ultra-high temperature heat pump unit 2-3 is discharged to the factory wastewater system.

[0030] In an embodiment of the present application, as shown in Figure 1 The second heat exchanger 1-2 is connected with the wastewater pool, the third heat exchanger 1-3 is connected with the condensate water pool, and the fourth heat exchanger 1-4 is connected with the industrial steam conveying pipeline.

[0031] It should be noted that the second heat exchanger 1-2 is connected with the external wastewater pool, and the second heat exchanger 1-2 absorbs the heat of the wastewater and performs the second heating on the pure water after the first heating in the second heat exchanger 1-2. The second-heated pure water is heated for the third time by the condensate water in the third heat exchanger 1-3, and then heated for the fourth time by the industrial steam in the fourth heat exchanger 1-4.

[0032] In an embodiment of the present application, as shown in Figure 1 The inner cavity of the distillation water preparation body 1-6 is provided with a heating pipe, the top wall of the inner cavity of the distillation water preparation body 1-6 is provided with a demister, and the bottom of the inner cavity of the distillation water preparation body 1-6 is provided with a water storage tank, and the water storage tank is connected with the steam removal pump 1-8 through the water conveying pipeline.

[0033] It should be noted that the heating pipe in the inner cavity of the distillation water preparation body 1-6 evaporates into water vapor when the pure water drops, and the demister separates the water vapor into water vapor, and the separated liquid water enters the water storage tank and is transported through the water conveying pipeline and the steam removal pump 1-8.

[0034] It should be noted that the operation of the valve 2-9 directly corresponds to the application of the first heater 2-7. When the valve 2-9 is closed, the first heater 2-7 is put into use; when the valve 2-9 is opened, the first heater 2-7 is stopped.

[0035] Specifically, the preparation steps of the hot pressure type distilled water using heat pump energy recovery are as follows: collecting the low-temperature sewage and condensate water discharged from the hot pressure type distilled water preparation and pouring them into a waste heat water tank 2-1, conveying them to an ultra-high temperature heat pump unit 2-3 through a first load circulating pump 2-2 for conversion, converting them into high-temperature hot water, conveying the high-temperature hot water to a hot water tank 2-5 through a second load circulating pump 2-4, and discharging the waste water with reduced temperature after absorbing heat by the ultra-high temperature heat pump unit 2-3 to a factory waste water system. The high-temperature hot water is conveyed to a primary heater 2-7 by a hot water circulating pump 2-6, and the pure water conveyed by a high-temperature water pump 1-5 is heated six times. The heated pure water enters the hot pressure type distilled water preparation. The hot water releasing heat after the primary heater 2-7 enters a secondary heater 2-8, further releases heat, and heats the pure water preheated three times again, reducing the use of industrial steam. The low-temperature hot water releasing heat is poured into the hot water tank 2-5 through a water pipeline and enters the energy recovery water source ultra-high temperature heat pump system 2 for repeated and cyclic heating.

[0036] The low-temperature pure water and the injection water enter a first heat exchanger 1-1 for first heating, then are synchronously heated with the sewage entering a second heat exchanger 1-2 for second heating, and are heated with the condensate water entering a third heat exchanger 1-3 for third heating. After gradually increasing the temperature, the heat-exchanged sewage and condensate water are discharged, heated with industrial steam in a fourth heat exchanger 1-4 for fourth heating, and the pure water reaches a certain high temperature.

[0037] The high-temperature pure water after multiple heating is conveyed to a spray pipe in a distilled water preparation body 1-6 by a high-temperature water pump 1-5, and then the high-temperature pure water is sprayed on the outer surface of a heating pipe of the distilled water preparation body 1-6, so that the pure water evaporates, and the pure water evaporates and boils into steam. The steam is subjected to water vapor separation process in a demister at the upper part of the inner cavity of the distilled water preparation body 1-6. The separated liquid water drops to the bottom of the inner cavity of the distilled water preparation body 1-6 for storage under the action of gravity, and the pure steam is absorbed and compressed into high-temperature and high-pressure superheated steam by a steam compressor 1-7. The superheated steam is conveyed to the heating pipe of the distilled water preparation body 1-6 to provide continuous high-temperature heat for the distillation of the pure water outside the pipe.

[0038] The high-temperature and high-pressure pure steam in the pipe condenses into injection water under the condensation of the low-temperature pure water outside the pipe. The liquid injection water gathered at the bottom of the inner cavity of the distilled water preparation body 1-6 is separated from non-condensable gas by a steam removal device 1-9. The injection water after steam removal is conveyed to an injection water storage system by a steam removal water pump 1-8 after being cooled by the first heat exchanger 1-1. The sewage passing through the second heat exchanger 1-2 is discharged through a pipeline, the condensate water after heat exchange by the third heat exchanger 1-3 is discharged through a pipeline, and the industrial steam is used.

[0039] In conclusion, the hot-press type distilled water preparation device adopting heat pump energy recovery can recycle waste heat through the super-high temperature heat pump unit, prepare high-temperature hot water, heat the pure water through the primary and secondary heaters, and then send the pure water into the hot-press type distilled water preparation circulation system, so that the demand for industrial steam and condensed water is reduced, and the requirements of energy saving, low carbon emission and water resource saving are finally realized.

[0040] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and deform the above-mentioned embodiments within the scope of the utility model.

Claims

1. A thermostatic distillation water preparation device employing heat pump energy recovery, characterized in that, It includes a hot-pressurized distilled water preparation component (1), an energy-recovery water source ultra-high temperature heat pump system (2), and a control component (3), wherein, The control component (3) includes a water pipe and a control valve; The hot-pressurized distilled water preparation assembly (1) includes a first heat exchanger (1-1), a second heat exchanger (1-2), a third heat exchanger (1-3), a fourth heat exchanger (1-4), a high-temperature water pump (1-5), a distilled water preparation body (1-6), a steam compressor (1-7), a desteaming water pump (1-8), and a desteaming device (1-9), wherein, The first heat exchanger (1-1) is connected to the soft water supply end through the water pipe; The second heat exchanger (1-2) is connected to the first heat exchanger (1-1) through the water pipe. The third heat exchanger (1-3) is connected to the second heat exchanger (1-2) through the water pipe. The fourth heat exchanger (1-4) is connected to the third heat exchanger (1-3) through the water pipe. The inlet and outlet ports of the high-temperature water pump (1-5) are respectively connected to the fourth heat exchanger (1-4) and the distilled water preparation body (1-6); wherein, the fourth heat exchanger (1-4) is also connected to a drain pipe for discharging wastewater after heat exchange; The steam compressor (1-7) is connected to the distilled water preparation body (1-6). The desteam water pump (1-8) is connected to the steam compressor (1-7) through the water supply pipe. The desteaming device (1-9) is installed on the desteaming water pump (1-8); The waste hot water tank (2-1) of the energy recovery water source ultra-high temperature heat pump system (2) is connected to the second heat exchanger (1-2) and the third heat exchanger (1-3) respectively through the water pipe.

2. The thermostatic distillation water preparation device using heat pump energy recovery according to claim 1, characterized in that, The energy recovery water source ultra-high temperature heat pump system (2) includes a waste hot water tank (2-1), a first load circulation pump (2-2), an ultra-high temperature heat pump unit (2-3), a second load circulation pump (2-4), a hot water tank (2-5), a hot water circulation pump (2-6), a primary heater (2-7), a secondary heater (2-8), and valves (2-9), wherein, The wastewater collection end of the waste hot water tank (2-1) is connected to the second heat exchanger (1-2) and the third heat exchanger (1-3) respectively through the water pipe. The first load circulation pump (2-2) is connected to the waste hot water tank (2-1) via a pipeline; The ultra-high temperature heat pump unit (2-3) is connected to the first load circulation pump (2-2) through the water pipe. The second load circulation pump (2-4) is connected to the ultra-high temperature heat pump unit (2-3) through the water pipe. The water inlet of the hot water tank (2-5) is connected to the second load circulation pump (2-4) through the water pipe. The hot water circulation pump (2-6) is connected to the outlet port of the hot water tank (2-5) through the water pipe; The primary heater (2-7) and the secondary heater (2-8) are connected in sequence through the water pipe; The primary heater (2-7) is connected to the hot water circulation pump (2-6) through the water pipe, and the secondary heater (2-8) is connected to the hot water tank (2-5) through the water pipe.

3. The thermostatic distillation water preparation device using heat pump energy recovery according to claim 1, characterized in that, The second heat exchanger (1-2) is connected to the sewage tank, the third heat exchanger (1-3) is connected to the condensate tank, and the fourth heat exchanger (1-4) is connected to the industrial steam transmission pipeline.

4. The thermostatic distillation water preparation device using heat pump energy recovery according to claim 1, characterized in that, The inner cavity of the distilled water preparation body (1-6) is provided with a heating tube, the top wall of the inner cavity of the distilled water preparation body (1-6) is provided with a demister, and the bottom of the inner cavity of the distilled water preparation body (1-6) is provided with a water storage tank, which is connected to the degassing water pump (1-8) through the water pipe.

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