Pure steam generator for heat pump energy recovery

Abstract

The utility model discloses a heat pump energy recovery pure steam generator, which comprises a pure steam generating assembly, an energy recovery water source high temperature heat pump system and a control mechanism, the control mechanism comprises a water pipe and a control valve, and the pure steam generating assembly comprises a water supply pump, a preheater, a circulating pump, a water storage tank and a heat exchanger, the preheater is connected with the water supply pump through a water pipe, the circulating pump is connected with the preheater through a water pipe, and the water storage tank is connected with the heat exchanger through a water pipe. And the energy recovery water source high-temperature heat pump system is connected with the circulating pump and is connected with the preheater through a water pipe. Therefore, the high-temperature heat pump unit is used for recycling waste heat to prepare high-temperature hot water, the high-temperature hot water passes through the primary heater and the secondary heater, raw material water is heated and conveyed into the pure steam generator to generate steam again, the requirement for industrial steam is reduced, and finally the requirements for energy conservation and low carbon emission are met.

Description

Technical Field

[0001] The utility model relates to the technical field of steam generators, in particular to a pure steam generator with heat pump energy recovery. Background Art

[0002] Energy is the foundation and driving force of human civilization and progress. It is related to national economy, people's livelihood and national security, and is related to human survival and development. It is vital to promoting economic and social development and enhancing people's well-being.

[0003] my country's current energy structure remains dominated by coal, making replacement difficult. The development of non-fossil energy faces multiple constraints, and the industry faces coexisting issues of high energy consumption, high emissions, and low energy efficiency. Green and low-carbon technologies need to be strengthened. Industrial process heating accounts for approximately 50% of energy consumption, making decarbonizing industrial process heating a crucial component of achieving carbon neutrality.

[0004] Pure steam generators require energy to burn to produce industrial steam during operation, generating a large amount of low-temperature waste heat in the exhaust. This low-temperature waste heat contains a large amount of energy, but because the energy temperature is too low, it is difficult to directly utilize in actual production. This waste heat is discharged into the environment through wastewater, resulting in a large amount of waste heat. At the same time, the production of industrial steam requires more energy to burn, resulting in energy waste and other problems. Summary of the Invention

[0005] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, the purpose of this utility model is to propose a pure steam generator with heat pump energy recovery, which adopts a high-temperature heat pump unit to recycle waste heat and produce high-temperature hot water. The high-temperature hot water passes through primary and secondary heaters to heat the raw water, and is transported into the pure steam generator to generate steam again, reducing the demand for industrial steam and ultimately achieving the requirements of energy saving and low carbon emissions.

[0007] To achieve the above-mentioned purpose, the present invention proposes a pure steam generator with heat pump energy recovery, comprising a pure steam generating component, an energy recovery water source high-temperature heat pump system, and a control mechanism. The control mechanism comprises a water pipe and a control valve; the pure steam generating component comprises a water supply pump, a preheater, a circulation pump, a water storage tank, and a heat exchanger, wherein the water supply pump is connected to a raw water pool via the water pipe; the preheater is connected to the water supply pump via the water pipe, and the water supply pump is used to transport raw water to the preheater for heating; the circulation pump is connected to the preheater via the water pipe, and the circulation pump is connected to the water storage tank and the heat exchanger respectively; the water storage tank is connected to the heat exchanger via the water pipe; the energy recovery water source high-temperature heat pump system is connected to the circulation pump, and the energy recovery water source high-temperature heat pump system is used to heat the raw water, and the energy recovery water source high-temperature heat pump system is connected to the preheater via the water pipe.

[0008] The pure steam generator with heat pump energy recovery of the utility model adopts a high-temperature heat pump unit to recycle waste heat to produce high-temperature hot water. The high-temperature hot water heats the raw water through the primary and secondary heaters and is transported into the pure steam generator to generate steam again, reducing the demand for industrial steam and ultimately achieving the requirements of energy saving and low carbon emissions.

[0009] In addition, the pure steam generator with heat pump energy recovery proposed in the application may also have the following additional technical features:

[0010] Specifically, the energy recovery water source high-temperature heat pump system includes a waste hot water tank, a heat source circulation pump, a high-temperature heat pump unit, a load circulation pump, a hot water tank, a hot water circulation pump, a primary heater, a secondary heater, valve one and valve two, wherein the waste hot water tank is connected to the heat exchanger through the water pipe; the heat source circulation pump is connected to the waste hot water tank through the water pipe; the high-temperature heat pump unit is connected to the heat source circulation pump through the water pipe; the load circulation pump is respectively connected to the high-temperature heat pump unit and the hot water tank through the water pipe; the hot water circulation pump is connected to the hot water tank through the water pipe; the hot water circulation pump is connected to the primary heater and the secondary heater in sequence through the water pipe; and valve one and valve two are respectively arranged on the water pipe.

[0011] Specifically, the hot water circulation pump is connected to the water storage tank through the water pipe, and the water pipe is connected to the primary heater and the secondary heater in sequence. The raw water preheated by the preheater is heated again, and then flows into the water storage tank through the water pipe, and then enters the steam production system.

[0012] Specifically, a sewage outlet of a separation device is provided at the bottom of the heat exchanger, and the separated waste liquid is connected to the waste water tank through the water pipe.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0015] Figure 1 This is a schematic structural diagram of a pure steam generator with heat pump energy recovery according to an embodiment of the present invention.

[0016] As shown in the figure: 1. Pure steam generating assembly; 1-1. Water supply pump; 1-2. Preheater; 1-3. Circulation pump; 1-4. Water storage tank; 1-5. Heat exchanger; 2. Energy recovery water source high-temperature heat pump system; 2-1. Waste hot water tank; 2-2. Heat source circulation pump; 2-3. High-temperature heat pump unit; 2-4. Load circulation pump; 2-5. Hot water tank; 2-6. Hot water circulation pump; 2-7. Primary heater; 2-8. Secondary heater; 2-9. Valve 1; 2-10 Valve 2; 3. Control mechanism. DETAILED DESCRIPTION

[0017] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all variations, modifications, and equivalents that fall within the spirit and scope of the appended claims.

[0018] The pure steam generator with heat pump energy recovery according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

[0019] like Figure 1 As shown, the pure steam generator with heat pump energy recovery according to an embodiment of the present invention includes a pure steam generating component 1 , an energy recovery water source high-temperature heat pump system 2 and a control mechanism 3 .

[0020] Among them, the control mechanism 3 includes a water pipe and a control valve; the pure steam generating component 1 includes a water supply pump 1-1, a preheater 1-2, a circulation pump 1-3, a water storage tank 1-4 and a heat exchanger 1-5.

[0021] The water supply pump 1-1 is connected to the raw water tank via a water pipe, and the preheater 1-2 is connected to the water supply pump 1-1 via a water pipe. The water supply pump 1-1 is used to transport the raw water to the preheater 1-2 for heating. The circulation pump 1-3 is connected to the primary heater 2-7 and the water storage tank 1-4 via water pipes. The water storage tank 1-4 is connected to the heat exchanger 1-5 via water pipes. The energy recovery water source high-temperature heat pump system 2 is connected to the pure steam generation component 1 via the connecting pipes connected to the primary heater 2-7 and the secondary heater 2-8. The connection method is hot-side connection, which is used to supplement the heat source side. The energy recovery water source high-temperature heat pump system 2 is connected to the recovered pure steam generation component 1 via the waste hot water tank 2-1 and is used to recover waste heat.

[0022] It should be noted that the raw water described in this embodiment is fed into preheater 1-2 via water supply pump 1-1, where it is heated. After reaching a certain temperature, the raw water is heated again by secondary heater 2-8 before being piped into water storage tank 1-4. The raw water is then transported to heat exchanger 1-5 via circulation pump 1-3. Simultaneously, industrial steam is delivered to the other side of heat exchanger 1-5, exchanging heat with the raw water within heat exchanger 1-5. This heat is then heated to the evaporation temperature, transforming it into pure steam and discharging it into the desired space. The separated liquid water, which carries a certain amount of waste heat, is returned to water storage tank 1-4 for secondary evaporation, while the liquid wastewater containing impurities is discharged directly.

[0023] In one embodiment of the present invention, Figure 1 As shown, the energy recovery water source high-temperature heat pump system 2 includes a waste hot water tank 2-1, a heat source circulation pump 2-2, a high-temperature heat pump unit 2-3, a 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, valve one 2-9 and valve two 2-10.

[0024] The wastewater tank 2-1 is connected to the preheater 1-2 and heat exchanger 1-5 via water pipes. The heat source circulation pump 2-2 is connected to the wastewater tank 2-1 via water pipes, and the high-temperature heat pump unit 2-3 is connected to the heat source circulation pump 2-2 via water pipes. The load circulation pump 2-4 is connected to the high-temperature heat pump unit 2-3 and the hot water tank 2-5 via water pipes, respectively. The hot water circulation pump 2-6 is connected to the hot water tank 2-5 via water pipes. The hot water circulation pump 2-6 is connected to the primary heater 2-7 and the secondary heater 2-8 via water pipes. Valve 1 2-9 and valve 2 2-10 are installed on the water pipes.

[0025] It should be noted that the low-temperature wastewater evaporated from heat exchanger 1-5 is collected and collected in wastewater tank 2-1. It is then transported by heat source circulation pump 2-2 to high-temperature heat pump unit 2-3 for conversion into high-temperature hot water. The high-temperature hot water is then circulated by load circulation pump 2-4 to hot water tank 2-5. After absorbing heat in water source high-temperature heat pump unit 2-3, the wastewater is discharged into the factory wastewater system. The high-temperature hot water is then transported by hot water circulation pump 2-6 to primary heater 2-7, where circulation pump 1-3 initially heats the raw water. The heated raw water then enters the pure steam generator, reducing the use of industrial steam. The hot water absorbed by primary heater 2-7 enters secondary heater 2-8, where it releases further heat, reheating the raw water preheated by preheater 1-2. The water is then piped into storage tank 1-4 and subsequently enters the steam production system.

[0026] In one embodiment of the present invention, Figure 1 As shown, the hot water circulation pump 2-6 is connected to the water storage tank 1-4 through a water pipe, and the water pipe is connected to the secondary heater 2-8 and the preheater 1-2 in turn, and the secondary heater 2-8 and the preheater 1-2 are located between the hot water circulation pump 2-6 and the water storage tank 1-4.

[0027] It should be noted that the hot water circulation pump 2-6 delivers water to the primary heater 2-7, where the water releases its heat, and then delivers it to the secondary heater 2-8 for further heat release. The raw water preheated by the preheater 1-2 is heated again, piped into the water storage tank 1-4, and then enters the steam production system.

[0028] In one embodiment of the present invention, Figure 1 As shown, a separation device is provided at the bottom of the heat exchanger 1-5, and the sewage outlet of the separation device is connected to the waste water tank 2-1 through a water pipe.

[0029] It should be noted that the separation device at the bottom of the heat exchanger 1-5 is used to separate the water dripping from evaporation and condensation, and transport the separated water to the waste hot water tank 2-1.

[0030] Specifically, the pure steam generator with heat pump energy recovery operates as follows: raw water is fed into preheater 1-2 via water supply pump 1-1, where it is heated. After reaching a certain temperature, the raw water is then heated in secondary heater 2-8. The heated water is then piped into water storage tank 1-4. The raw water is then transported to primary heater 2-7 via circulation pump 1-3 and then to the inner cavity of heat exchanger 1-5. Simultaneously, industrial steam is also transported into heat exchanger 1-5, exchanging heat with the raw water entering heat exchanger 1-5. This heat is then heated to the evaporation temperature, transforming it into pure steam and discharging it into the desired space. The separated liquid water, which carries a certain amount of waste heat, is returned to water storage tank 1-4 for secondary evaporation, while the liquid wastewater containing impurities is discharged directly.

[0031] The low-temperature wastewater evaporated from heat exchanger 1-5 is collected and collected in wastewater tank 2-1. It is then transported by heat source circulation pump 2-2 to high-temperature heat pump unit 2-3 for conversion into high-temperature hot water. The high-temperature hot water is then circulated by load circulation pump 2-4 to hot water tank 2-5. After absorbing heat in water source high-temperature heat pump unit 2-3, the wastewater is discharged into the factory wastewater system. The high-temperature hot water is then transported by hot water circulation pump 2-6 to primary heater 2-7, where circulation pump 1-3 reheats the raw water. The heated raw water then enters the pure steam generator, reducing industrial steam usage. The hot water, having absorbed heat from primary heater 2-7, enters secondary heater 2-8, releasing further heat to reheat the raw water preheated in preheater 1-2. The water is then piped into storage tank 1-4 and subsequently enters the steam production system.

[0032] It should be noted that the opening of valve 2-9 can be controlled according to whether the primary heater 2-7 is enabled. When valve 2-9 is in the open state, the primary heater 2-7 is not in operation; when valve 2-9 is in the closed state, the primary heater 2-7 is in operation.

[0033] It should be noted that the opening of valve 2-10 can be controlled according to whether the secondary heater 2-8 is enabled. When valve 2-10 is in the open state, the secondary heater 2-8 is not in operation; when valve 2-10 is in the closed state, the secondary heater 2-8 is in operation.

[0034] In summary, the pure steam generator with heat pump energy recovery in the embodiment of the present invention adopts a high-temperature heat pump unit to recycle waste heat to produce high-temperature hot water. The high-temperature hot water passes through the primary and secondary heaters to heat the raw water, and is transported into the pure steam generator to generate steam again, thereby reducing the demand for industrial steam and ultimately achieving the requirements of energy saving and low carbon emissions.

[0035] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present invention.

Claims

1. A pure steam generator with heat pump energy recovery, characterized in that: It comprises a pure steam generating component (1), an energy recovery water source high temperature heat pump system (2) and a control mechanism (3), wherein: The control mechanism (3) includes a water pipe and a control valve; The pure steam generating assembly (1) comprises a water supply pump (1-1), a preheater (1-2), a circulation pump (1-3), a water storage tank (1-4) and a heat exchanger (1-5), wherein: The water supply pump (1-1) is connected to the raw water pool through the water pipe; The preheater (1-2) is connected to the water supply pump (1-1) via the water pipe, and the water supply pump (1-1) is used to transport raw water to the preheater (1-2) for heating; The circulating pump (1-3) is connected to the water storage tank (1-4) and the heat exchanger (1-5) via the water pipe; The water storage tank (1-4) is connected to the heat exchanger (1-5) via the water pipe; The energy recovery water source high-temperature heat pump system (2) and the pure steam generating assembly (1) are connected by a hot side, a primary heater (2-7) and a secondary heater (2-8) are provided between the energy recovery water source high-temperature heat pump system (2) and the pure steam generating assembly (1), and the energy recovery water source high-temperature heat pump system (2) is connected to the preheater (1-2) and the heat exchanger (1-5) through the water pipe to realize waste heat recovery.

2. The pure steam generator with heat pump energy recovery according to claim 1, characterized in that: The energy recovery water source high-temperature heat pump system (2) comprises a waste hot water tank (2-1), a heat source circulation pump (2-2), a high-temperature heat pump unit (2-3), a 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), a valve 1 (2-9) and a valve 2 (2-10), wherein: The waste hot water tank (2-1) is connected to the heat exchanger (1-5) via the water pipe, and the waste hot water tank (2-1) is connected to the preheater (1-2) via the water pipe; The heat source circulation pump (2-2) is connected to the waste water tank (2-1) and the high-temperature heat pump unit (2-3) respectively through the water pipes; The load circulation pump (2-4) is respectively connected to the high-temperature heat pump unit (2-3) and the hot water tank (2-5) through the water pipe; The hot water circulation pump (2-6) is connected to the hot water tank (2-5) via the water pipe; The hot water circulation pump (2-6) is connected to the primary heater (2-7) and the secondary heater (2-8) in sequence through the water pipe; The valve one (2-9) and the valve two (2-10) are respectively arranged on the water pipe.

3. The pure steam generator with heat pump energy recovery according to claim 2, characterized in that: The hot water circulation pump (2-6) is connected to the water storage tank (1-4) through the water pipe, and the water pipe is connected to the primary heater (2-7) and the secondary heater (2-8) in sequence. The primary heater (2-7) is located between the hot water circulation pump (2-6) and the circulation pump (1-3), and the secondary heater (2-8) is located between the hot water circulation pump (2-6) and the preheater (1-2).

4. The pure steam generator with heat pump energy recovery according to claim 2, characterized in that: A sewage outlet of a separation device is provided at the bottom of the heat exchanger (1-5), and the separation device is connected to the waste water tank (2-1) via the water pipe.

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