An edible oil processing steam-water mixed state material waste heat recycling system

Abstract

The utility model belongs to the energy recovery and utilization technical field of food processing industry relates to a kind of edible oil processing steam-water mixed state material waste heat recovery and utilization system, including waste water tank, steam-water separator, steam-water mixed heat exchanger, condensate heat exchanger, air preheater, softened water tank, hot water storage tank and air blower;Steam-water separator is equipped with steam-water mixing inlet, first steam outlet and condensate outlet, first steam outlet, steam-water mixed heat exchanger and softened water tank are sequentially connected;Condensate outlet, the hot fluid passage of condensate heat exchanger, the hot fluid passage of air preheater and waste water tank are sequentially connected, the inlet of the cold fluid passage of air preheater is equipped with air blower, and the outlet of the cold fluid passage of air preheater is connected with boiler equipment by pipeline;Condensate heat exchanger is connected with hot water storage tank.The utility model can recover latent heat of flash vapor and sensible heat of condensate synchronously, and recover heat generated in edible oil processing process.

Description

Technical Field

[0001] This utility model relates to a waste heat recovery and utilization system for a mixture of edible oil and carbonated beverages, belonging to the field of energy recovery and utilization technology in the food processing industry. Background Technology

[0002] The processing of edible oil generates a large amount of high-temperature waste gas. After being treated by a condensation system, this waste gas typically forms a mixture of flash vapor and condensate, which contains a significant amount of recoverable waste heat. Currently, the industry's commonly used heat recovery technologies primarily focus on recovering and utilizing the sensible heat in the condensate, for example, by supplying the condensate to dormitory heating systems as a heat source.

[0003] However, existing technologies have drawbacks: flash steam, due to its gaseous nature, is difficult to capture by conventional water-cooling systems. It is typically lost through cooling towers or direct venting, thus wasting the latent heat resources carried within it. Recovering only the sensible heat of the condensate while ignoring the latent heat of the flash steam results in low overall waste heat recovery efficiency, failing to maximize the cascade utilization of energy. Furthermore, unused flash steam requires additional cooling resources for treatment, and the emitted high-humidity, hot gases exacerbate microclimate problems within the plant area.

[0004] Therefore, there is a need for a waste heat recovery system for edible oil processing and steam-water mixtures that can simultaneously recover the latent heat of flash steam and the sensible heat of condensate. Utility Model Content

[0005] The purpose of this utility model is to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.

[0006] The technical solution provided by this utility model is as follows: A waste heat recovery and utilization system for edible oil processing vapor-water mixture includes a wastewater tank, a vapor-water separator, a vapor-water mixing heat exchanger, a condensate heat exchanger, an air preheater, a softened water tank, a hot water storage tank, and a blower; the vapor-water separator is provided with a vapor-water mixing inlet, a first steam outlet, and a condensate outlet, and the first steam outlet, the vapor-water mixing heat exchanger, and the softened water tank are connected in series to form a softened water heating circulation loop; the condensate outlet, the hot fluid channel of the condensate heat exchanger, the hot fluid channel of the air preheater, and the wastewater tank are connected in series, and a blower is provided at the inlet of the cold fluid channel of the air preheater, and the outlet of the cold fluid channel of the air preheater is connected to a boiler through a pipeline; the inlet of the cold fluid channel of the condensate heat exchanger is connected to the outlet of the hot water storage tank, and the outlet of the cold fluid channel of the condensate heat exchanger is connected to the inlet of the hot water storage tank, forming a heat exchange circulation loop.

[0007] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: The steam-water separator of this utility model can first separate the steam-water mixture into flash steam (gas phase) and condensate (liquid phase). The separated flash steam heats the softened water through the steam-water mixing heat exchanger. The heat in the condensate first preheats the deaerator feedwater through the condensate heat exchanger, and then heats the boiler combustion air through the air preheater, realizing the stepwise recovery of condensate heat. This utility model can simultaneously recover the latent heat of flash steam and the sensible heat of condensate, maximizing the recovery of heat generated during edible oil processing.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, it also includes a deaerator, and the steam-water separator is also provided with a second steam outlet, which is connected to the steam inlet of the deaerator, and the outlet of the hot water storage tank is connected to the inlet of the deaerator.

[0010] The above-mentioned further beneficial effects are:

[0011] The flash steam is diverted for use. Part of the flash steam is used to heat the softened water through a steam-water mixing heat exchanger, while the other part is used directly as steam for the deaerator.

[0012] Flash steam is formed when high-pressure saturated water enters a lower-pressure space, causing some of the saturated water to rapidly vaporize due to the pressure drop. The flash steam is divided into two parts. One part passes through a steam-water mixing heat exchanger, exchanging heat with softened water (water that has undergone softening treatment to remove calcium, magnesium, and other ions), thus heating the softened water to the required temperature for subsequent production processes or other stages requiring hot water. The other part of the flash steam bypasses the heat exchanger and serves directly as the steam source for the deaerator. A deaerator is a device that removes dissolved oxygen and other gases from water. The heat and pressure provided by the flash steam help the deaerator perform its deoxygenation function more effectively, ensuring the safety and normal operation of subsequent water-using equipment.

[0013] Furthermore, it also includes a first circulating water pump, which is connected to the pipeline between the softened water tank and the steam-water mixing heat exchanger, for pumping water from the softened water tank to the steam-water mixing heat exchanger for heat exchange.

[0014] The beneficial effect of adopting the above-mentioned further solution is that by adding a first circulating water pump, the flow rate and pressure of softened water can be effectively controlled, ensuring that softened water can stably and continuously enter the steam-water mixing heat exchanger for heat exchange, thereby improving the efficiency of heat exchange.

[0015] Furthermore, it also includes a second circulating water pump, which is connected between the condensate heat exchanger and the hot water storage tank, and is used to pump water from the hot water storage tank to the cold fluid channel side of the condensate heat exchanger.

[0016] The beneficial effect of adopting the above-mentioned further solution is that the circulation efficiency is improved by adding a second circulating water pump.

[0017] Furthermore, it also includes a deaerator water tank, the outlet of which is connected to the cold fluid channel of the condensate heat exchanger and the deaerator via pipes.

[0018] Furthermore, a deoxygenated water pump is also provided in addition to the deoxygenated water tank. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the waste heat recovery and utilization system for the edible oil processing and carbonated beverage mixture of this utility model.

[0021] In the diagram, 1. Wastewater tank; 2. Steam-water separator; 3. Steam-water mixing heat exchanger; 4. Condensate heat exchanger; 5. Air preheater; 6. Softened water tank; 7. Blower; 8. Deaerator; 9. First circulating water pump; 10. Second circulating water pump; 11. Deaerator water tank; 12. Deaerator water pump; 13. Hot water storage tank; 14. Boiler. Detailed Implementation

[0022] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the objects described and do not imply any priority in order or any specific technical meaning. Furthermore, the concepts of "connection" and "linkage" mentioned in this application, unless otherwise specified, are considered to include both direct connection (linkage) and indirect connection (linkage).

[0023] When interpreting the description of this application, it should be clarified that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating directions or positional relationships, are based on the perspective and layout shown in the accompanying drawings. They are intended to facilitate explanation and simplify the description process, and are not absolute limitations on the actual location, construction method, or operating mode of the described device or element. Therefore, these terms should not be construed as restrictive interpretations of the content of this application.

[0024] The principles and features of this utility model are described below with reference to examples. The examples are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0025] like Figure 1 As shown, a waste heat recovery system for edible oil processing involving a mixture of steam and water includes a wastewater tank 1, a steam-water separator 2, a steam-water mixing heat exchanger 3, a condensate heat exchanger 4, an air preheater 5, a softened water tank 6, a hot water storage tank 13, and a blower 7. The steam-water separator 2 has a steam-water mixing inlet, a first steam outlet, and a condensate outlet. The first steam outlet, the steam-water mixing heat exchanger 3, and the softened water tank 6 are connected in series to form a softened water heating circulation loop. The softened water tank 6 is a storage device for softened water. The condensate outlet, the hot fluid channel of the condensate heat exchanger 4, and the... The hot fluid channel of the air preheater 5 and the wastewater tank 1 are connected in series. A blower 7 is installed at the inlet of the cold fluid channel of the air preheater 5, and the outlet of the cold fluid channel of the air preheater 5 is connected to the boiler 14 through a pipe. The inlet of the cold fluid channel of the condensate heat exchanger 4 is connected to the outlet of the hot water storage tank 13, and the outlet of the cold fluid channel of the condensate heat exchanger 4 is connected to the inlet of the hot water storage tank 13. The hot water storage tank 13 is equipped with deaerator 8 feed water, and the condensate heat exchanger 4 is used to preheat the deaerator 8 feed water in the hot water storage tank 13.

[0026] The waste heat recovery system also includes a deaerator 8. The steam-water separator 2 is further equipped with a second steam outlet, which is connected to the steam inlet of the deaerator 8. The outlet of the hot water storage tank 13 is connected to the inlet of the deaerator 8. Flash steam is formed when high-pressure saturated water enters a space with lower pressure, causing some of the saturated water to rapidly vaporize due to the pressure drop. The flash steam is divided into two parts for use. One part of the flash steam passes through the steam-water mixing heat exchanger 3, where it exchanges heat with softened water (water that has undergone softening treatment to remove calcium, magnesium, and other ions), thereby heating the softened water to the required temperature for use in subsequent production processes or other stages requiring hot water. The other part of the flash steam bypasses the heat exchanger and serves directly as the steam source for the deaerator 8. The deaerator 8 is a device that removes dissolved oxygen and other gases from water. The heat and pressure provided by the flash steam help the deaerator 8 to better perform its deoxygenation work, ensuring the safety and normal operation of subsequent water-using equipment.

[0027] The waste heat recovery system also includes a first circulating water pump 9 and a second circulating water pump 10. The first circulating water pump 9 is connected to the pipeline between the softened water tank 6 and the steam-water mixing heat exchanger 3, and is used to pump water from the softened water tank 6 to the steam-water mixing heat exchanger 3 for heat exchange. The second circulating water pump 10 is connected between the condensate heat exchanger 4 and the hot water storage tank 13, and is used to pump water from the hot water storage tank 13 to the cold fluid channel side of the condensate heat exchanger 4. By adding the first circulating water pump 9 and the second circulating water pump 10, the flow rate and pressure of the softened water and the water supplied to the deaerator 8 are controlled respectively, ensuring that the water can circulate stably and continuously and perform heat exchange, thereby improving the efficiency of heat exchange.

[0028] The waste heat recovery system also includes a deoxygenated water tank 11. The outlet of the deoxygenated water tank 11 is connected to the cold fluid channel of the condensate heat exchanger 4 and the deaerator 8 via pipes, providing a water source for the condensate heat exchanger 4 and the deaerator 8. A deoxygenated water pump 12 is also provided outside the deoxygenated water tank 11.

[0029] The gas-water separator 2 of this invention can first separate the gas-water mixture into flash steam (gas phase) and condensate (liquid phase). The separated flash steam heats the softened water through the gas-water mixing heat exchanger 3. The heat in the condensate first preheats the feed water of the deaerator 8 through the condensate heat exchanger 4, and then heats the combustion air of the boiler 14 through the air preheater 5, realizing the stepwise recovery of the heat of the condensate. This invention can simultaneously recover the latent heat of the flash steam and the sensible heat of the condensate, maximizing the recovery of heat generated during the edible oil processing.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waste heat recovery and utilization system for a mixture of edible oil processing and soft drink, characterized in that, The system includes a wastewater tank (1), a steam-water separator (2), a steam-water mixing heat exchanger (3), a condensate heat exchanger (4), an air preheater (5), a softened water tank (6), a hot water storage tank (13), and a blower (7). The steam-water separator (2) is provided with a steam-water mixing inlet, a first steam outlet, and a condensate outlet. The first steam outlet, the steam-water mixing heat exchanger (3), and the softened water tank (6) are connected in series to form a softened water heating circulation loop. The heat flow of the condensate outlet and the condensate heat exchanger (4) The body channel, the hot fluid channel of the air preheater (5) and the wastewater tank (1) are connected in series. A blower (7) is provided at the inlet of the cold fluid channel of the air preheater (5). The outlet of the cold fluid channel of the air preheater (5) is connected to the boiler (14) equipment through a pipe. The inlet of the cold fluid channel of the condensate heat exchanger (4) is connected to the outlet of the hot water storage tank (13). The outlet of the cold fluid channel of the condensate heat exchanger (4) is connected to the inlet of the hot water storage tank (13).

2. The waste heat recovery and utilization system for edible oil processing and carbonated beverage mixtures according to claim 1, characterized in that, It also includes a deaerator (8), and the steam-water separator (2) is also provided with a second steam outlet, which is connected to the steam inlet of the deaerator (8), and the outlet of the hot water storage tank (13) is connected to the inlet of the deaerator (8).

3. The waste heat recovery and utilization system for edible oil processing carbonated beverage mixtures according to claim 1 or 2, characterized in that, It also includes a first circulating water pump (9), which is connected to the pipeline between the softened water tank (6) and the steam-water mixing heat exchanger (3) for pumping water from the softened water tank (6) to the steam-water mixing heat exchanger (3) for heat exchange.

4. The waste heat recovery and utilization system for edible oil processing and carbonated beverage mixtures according to claim 3, characterized in that, It also includes a second circulating water pump (10), which is connected between the condensate heat exchanger (4) and the hot water storage tank (13) to pump water from the hot water storage tank (13) to the cold fluid channel side of the condensate heat exchanger (4).

5. The waste heat recovery and utilization system for edible oil processing carbonated beverage mixtures according to claim 2, characterized in that, It also includes a deoxygenated water tank (11), the outlet of which is connected to the cold fluid channel of the condensate heat exchanger (4) and the deaerator (8) respectively via pipes.

6. The waste heat recovery and utilization system for edible oil processing and carbonated beverage mixtures according to claim 5, characterized in that, In addition to the deoxygenated water tank (11), a deoxygenated water pump (12) is also provided.

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