Instant noodle factory waste heat recovery system
By introducing equipment such as flash tanks and ejectors into instant noodle factories, the waste heat from high-temperature and high-pressure hot water and steam is recovered, solving the problem of energy waste and achieving efficient utilization of waste heat and reduction of production costs.
Patent Information
- Application Number
- CN202422464031.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-10-12
AI Technical Summary
Instant noodle factories have energy waste problems during the production process, especially the waste heat of high-temperature and high-pressure condensate and high-temperature and high-pressure steam is not effectively utilized, which leads to increased production costs.
A waste heat recovery system for an instant noodle factory is adopted, including a first ejector, a frying line, a first flash tank, a hot water tank, a second ejector, a second flash tank, a noodle steaming line, and a heat exchanger. The system recovers the waste heat of high-temperature and high-pressure hot water and steam through flash evaporation and mixing processes to generate atmospheric pressure steam and wet steam that can be used in production.
It makes full use of the waste heat from high-temperature and high-pressure condensate and high-temperature and high-pressure steam, reducing energy waste, lowering production costs, and improving the waste heat recovery rate of the process.
Smart Images
Figure CN223439183U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of waste heat recovery, and specifically relates to a waste heat recovery system for instant noodle factories. BACKGROUND
[0002] In the prior art, as shown in the figure, many instant noodle factories are located at the end of the central steam supply pipeline, and a large amount of condensed hot water is present in the steam supply pipeline. Figure 1 The hot water is generally directly discharged through a drain valve (to prevent clogging of the subsequent heat exchange equipment, not shown), resulting in a large waste of heat energy. A portion of the steam delivered by the main pipeline is reduced in pressure by a first pressure-reducing device and then directly discharged after heat exchange in a frying line, and another portion of the steam delivered by the main pipeline is reduced in pressure by a second pressure-reducing device and then directly discharged after heat exchange in a steaming line. It has been detected that the hot water with a mass fraction of 30% and a pressure of 1.2 MP is present at the bottom of the pipeline and flows into the steam-using equipment together with the steam, but cannot release heat and instead increases the flow resistance, and the hot water is generally directly discharged through a drain valve, resulting in a waste of energy. In the instant noodle factory, a portion of the steam delivered by the main pipeline is directly reduced in pressure by the first pressure-reducing device to a pressure of 8 kg (0.8 MP), and another portion of the steam is directly reduced in pressure by the second pressure-reducing device to a pressure of 1 kg (0.1 MP), and then is supplied to the steam-using equipment (the frying line and the steaming line), and the high-temperature and high-pressure condensed water formed after heat release is directly discharged, which results in a serious waste of energy and increases the production cost. Therefore, there is an urgent need to develop a new type of waste heat recovery system specially used for instant noodle production. CONTENT OF THE UTILITY MODEL
[0003] The utility model aims at the deficiencies of the prior art and provides a waste heat recovery system for instant noodle factories, which recovers a large amount of energy without pressure reduction and reduces the production cost.
[0004] The utility model adopts the technical scheme of a waste heat recovery system for instant noodle factories, which comprises a first ejector, a frying line, a first flash tank, a hot water tank, a second ejector, a second flash tank, a steaming line and a heat exchanger. A branch pipeline is arranged at the high-pressure front end of the main pipeline and is connected to the first flash tank. The steam outlet of the first flash tank is connected to the injection port of the first ejector. One pipeline outlet of the main pipeline is connected to the high-pressure inlet of the first ejector, and the outlet of the first ejector is connected to the frying line. The other pipeline outlet of the main pipeline is connected to the high-pressure inlet of the second ejector, the outlet of the second ejector is connected to the steaming line, and the outlet of the steaming line is connected to the heat exchanger.
[0005] The outlet of the frying line is connected to the first inlet of the second flash tank, and the first outlet of the second flash tank is connected to the hot water tank.
[0006] The hot water outlet of the first flash tank is connected with the second inlet of the second flash tank.
[0007] The cold water input pipe is connected with a heat exchanger, the heat exchanger is connected with a hot water tank through a first water pump, and the hot water tank is connected with the injection port of the second ejector through a second water pump.
[0008] The second outlet of the second flash tank is connected with a steaming line, and 0.1Mpa normal pressure steam at 100 DEG C is supplied to the steaming line to improve the waste heat recovery rate of the production process.
[0009] A drain valve is arranged between the first flash tank and the main pipeline, and is used for recovering the waste heat of high-temperature and high-pressure hot water with a pressure of 12 kg (1.2MP) and a temperature of 180 DEG C to generate steam with a pressure of 6 kg (0.6MP) for production.
[0010] In general, compared with the prior art, the present application has the beneficial effects as follows: the waste heat of high-temperature condensate water with a pressure of 0.8Mpa is fully utilized to generate normal pressure steam in the second flash tank for the steaming line, direct discharge is avoided, and a large amount of energy is recovered; the waste heat of high-temperature and high-pressure hot water with a pressure of 1.2Mpa is fully utilized, the waste heat is recovered through flashing, low-pressure steam with a pressure of 6 kg (0.6MP) is generated, and the production steam is formed through the first ejector without pressure reduction; the waste heat of 90 DEG C hot water is fully utilized, the second ejector is used to mix the 90 DEG C hot water with high-pressure steam with a pressure of 1.2Mpa to form production wet steam with a pressure of 1 kg (0.1Mpa) for the steaming line, the pressure energy of the high-pressure steam is fully utilized, and pressure reduction is not needed. BRIEF DESCRIPTION OF DRAWINGS
[0011] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.
[0012] Figure 1 It is a process flowchart of the prior art;
[0013] Figure 2 It is a process flowchart of the present application. DETAILED DESCRIPTION
[0014] The technical solutions of the utility model will be described clearly and completely in combination with the embodiments. Obviously, the described embodiments are some of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model. In the description of the utility model, it is understood that the orientation or position relation indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or position relation shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.
[0015] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly and specifically limited. In addition, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0016] A kind of instant noodle factory waste heat recovery system, such as Figure 2As shown, including the first ejector, frying line, the first flash tank, hot water tank, the second ejector, the second flash tank, steamed noodles line and heat exchanger. The high pressure front end of the main pipeline is provided with branch pipeline connected with the first flash tank, the steam outlet of the first flash tank is connected with the injection port of the first ejector, and the hot water outlet of the first flash tank is connected with the second inlet of the second flash tank. One pipeline outlet of the main pipeline is connected with the high pressure inlet of the first ejector, the outlet of the first ejector is connected with the frying line, the outlet of the frying line is connected with the first inlet of the second flash tank, and the first outlet of the second flash tank is connected with the hot water tank. Another pipeline outlet of the main pipeline is connected with the high pressure inlet of the second ejector, the outlet of the second ejector is connected with the steamed noodles line, the outlet of the steamed noodles line is connected with the heat exchanger, and the steam is discharged after heat exchange. The cold water input pipe is connected with the heat exchanger, the heat exchanger is connected with the hot water tank through the first water pump, and the hot water tank is connected with the injection port of the second ejector through the second water pump. The second outlet of the second flash tank is connected with the steamed noodles line, and the normal pressure steam with a temperature of 100 DEG C and a pressure of 0.1Mpa is supplied to the steamed noodles line to improve the waste heat recovery rate of the process. The steam and air with waste heat generated from the outlet of the steamed noodles line are input into the heat exchanger for heat exchange, and most of the waste heat is recovered.
[0017] The hot water outlet of the first flash tank is connected with the second inlet of the second flash tank, the hot water with a pressure of 0.6Mpa formed by flashing the first flash tank is input into the second flash tank, and the hot water with a pressure of 0.8Mpa generated from the frying noodles line is flashed in the second flash tank to form normal pressure steam with a temperature of 100 DEG C and a pressure of 0.1Mpa and hot water with a temperature of 90 DEG C and a pressure of 0.1Mpa.
[0018] Among them, the drain valve is arranged between the first flash tank and the main pipeline.
[0019] The utility model discloses technical scheme on the basis of prior art structure, first increase the first flash tank, the high pressure pipeline in the pressure 1.2Mpa high temperature high pressure hot water is introduced first in the first flash tank, and the steam of pressure 0.6Mpa is formed through the flash, then enters the first ejector, and the high pressure steam of pressure 1.2Mpa introduced with main pipeline mixes, and the steam of pressure 0.8Mpa is formed and supplies the frying line, and need not decompression. The condensed water of pressure 0.8Mpa discharged from the frying line enters the second flash tank, and the high temperature hot water of pressure 0.6Mpa discharged from the first flash tank also enters the second flash tank. In the second flash tank, two hot water are fully mixed and flash out the steam of pressure 0.1Mpa for the steam surface line use. The high temperature steam mixture of steam surface line discharge enters the heat exchanger, and after heat release, discharges again. The cold water of 20 DEG C is heated to 90 DEG C by the heat exchanger, then enters the hot water tank. The hot water of pressure 0.1Mpa discharged from the second flash tank also enters the hot water tank. The hot water of hot water tank is pressurized by the second water pump and enters the second ejector, and the high pressure steam of pressure 1.2Mpa mixes into the wet steam of pressure 0.1Mpa in the second ejector and supplies the steam surface line use, and the wet steam with water is beneficial to the steam penetration of dough, also fully recovers the heat energy of hot water, and need not decompression to the steam of pressure 1.2Mpa, and one can achieve two things at a time.
[0020] The above examples are only used to illustrate the technical scheme of the utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical scheme recorded in the foregoing examples, or make equivalent replacement to part or all of the technical features. The modification or replacement does not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the utility model examples.
Claims
1. A waste heat recovery system for an instant noodle factory, characterized in that: It includes a first ejector, a frying line, a first flash tank, a second ejector, a second flash tank, steamed noodle noodles and a heat exchanger; a branch pipe is set at the high-pressure front end of the main pipeline to be connected to the first flash tank, and the steam outlet of the first flash tank is connected to the ejection port of the first ejector; one pipeline outlet of the main pipeline is connected to the high-pressure inlet of the first ejector, and the outlet of the first ejector is connected to the frying line; another pipeline outlet of the main pipeline is connected to the high-pressure inlet of the second ejector, the outlet of the second ejector is connected to the steamed noodle noodles, and the steamed noodle noodles outlet is connected to the heat exchanger.
2. The waste heat recovery system of an instant noodle factory according to claim 1, characterized in that: The frying line steam outlet is connected to the first inlet of the second flash tank, and the first outlet of the second flash tank is connected to the hot water tank.
3. The waste heat recovery system of an instant noodle factory according to claim 2, characterized in that: The hot water outlet of the first flash tank is connected to the second inlet of the second flash tank.
4. The waste heat recovery system for an instant noodle factory according to claim 1, characterized in that: The cold water input pipe is connected to the heat exchanger, and the heat exchanger is connected to the hot water tank through the first water pump.
5. The waste heat recovery system for an instant noodle factory according to claim 4, characterized in that: The hot water tank is connected to the ejection port of the second ejector through a second water pump.
6. The waste heat recovery system for an instant noodle factory according to claim 1, characterized in that: The second outlet of the second flash tank is connected to the steamed noodle soup.
7. The waste heat recovery system for an instant noodle factory according to claim 1, characterized in that: A steam trap is provided between the first flash tank and the main pipeline.