A cigarette factory steam condensate water recycling system

Abstract

The application relates to a cigarette factory steam condensate water recycling system, which comprises two condensate water tanks, pipelines, pumps and valves; wherein a first pipeline is arranged at the bottom of the first condensate water tank, the end of the first pipeline is connected with a first stop valve, a second water pump is arranged behind the first stop valve, and a third pipeline is arranged behind the second water pump; a fifth pipeline is arranged at the bottom of the first condensate water tank, a third water pump is arranged on the fifth pipeline, a sixth pipeline is connected to the top of the second condensate water tank and arranged at the rear end of the third water pump, and a first electromagnetic valve is arranged on the second condensate water tank; a fourth pipeline is arranged at the bottom of the second condensate water tank, the end of the fourth pipeline is connected with a second stop valve, a second pipeline is connected at the rear end of the second stop valve, a first water pump is connected at the end of the second pipeline, and the rear end of the first water pump is connected to the third pipeline; the condensate water can be fully utilized, and the energy-saving and consumption-reducing purposes are achieved.

Description

Technical Field

[0001] This application relates to the field of resource recycling technology, and in particular to a system for recycling steam condensate from a cigarette factory. Background Technology

[0002] During the cigarette manufacturing process, the steam used in production releases heat, forming a large amount of condensate. This condensate is of high quality, close to pure water, and can be used in most other processes that require water. Currently, most of the condensate after heat release is collected and used locally for the tobacco processing and other processes, while the remainder is sent back to the boiler room for boiler use. Specifically, in the tobacco processing workshop, the thin-plate drying machine and the main equipment group (stem washing machine, stem pressing machine, leaf rehydration, and flavoring kitchen) use dedicated condensate discharge pipes to collect the condensate locally into a condensate tank for use by the main tobacco processing equipment group. The remaining condensate is transported back to the boiler room in the power workshop.

[0003] However, the main equipment in the yarn-making workshop requires condensate water at a temperature of 70±5℃, while the collected condensate water exceeds 90℃ and cannot be directly used for yarn making. To meet the process water needs of the yarn-making workshop, demineralized water needs to be added from the power plant to reach the set temperature and controlled within the set temperature range. This results in an increase in condensate water volume, and when sent back to the boiler room, unused water is directly discharged, causing waste. The shortcomings of the current production system are summarized as follows: 1. The temperature requirements for water used in the silk-making process and water used in the boiler are different, and the same water source cannot simultaneously and accurately meet the needs of silk-making and power production.

[0004] 2. When prioritizing the water demand of the silk-making process, a large amount of low-temperature condensate is returned to the boiler room. In order to meet the boiler feedwater requirements, the steam consumption of the deaerator increases, which is not conducive to energy conservation and emission reduction.

[0005] 3. When the boiler water demand is low, a large amount of low-temperature condensate returns to the boiler room. When the capacity of the deaerator water tank is exceeded, there is a direct overflow and discharge, which further aggravates energy waste. Utility Model Content

[0006] To address or partially address the problems existing in related technologies, this application provides a system for recovering and utilizing steam condensate from a cigarette factory. This system can fully utilize condensate, achieving the goal of energy conservation and consumption reduction.

[0007] This application discloses a system for recovering and utilizing steam condensate from a cigarette factory, comprising: a condensate recovery pipeline group, a first condensate tank, a second condensate tank, a piping system, a water pump, and a solenoid valve; The condensate recovery pipeline assembly is connected to the top of the first condensate tank; A first pipeline is installed at the bottom of the first condensate tank. A first shut-off valve is connected to the end of the first pipeline. A second water pump is installed behind the first shut-off valve. A third pipeline is installed behind the second water pump. A fifth pipeline is installed at the bottom of the first condensate tank, a third water pump is installed on the fifth pipeline, a sixth pipeline is installed at the rear end of the third water pump and connected to the top of the second condensate tank, and a first solenoid valve is installed on the second condensate tank. A fourth pipe is installed at the bottom of the second condensate tank. A second shut-off valve is connected to the end of the fourth pipe. A second pipe is connected to the rear end of the second shut-off valve. A first water pump is connected to the end of the second pipe. The rear end of the first water pump is connected to a third pipe.

[0008] Optionally, a first drain valve is provided at the bottom of the first condensate tank, which is connected to the inside of the tank, and an overflow pipe of the first condensate tank is provided at the top, which is connected to the rear end of the first drain valve.

[0009] Optionally, a second drain valve is provided at the bottom of the second condensate tank, which is connected to the inside of the tank, and an overflow pipe of the second condensate tank is provided at the top, which is connected to the rear end of the second drain valve.

[0010] Optionally, a demineralized water supply pipe for the first condensate tank is connected to the top of the first condensate tank, and a second solenoid valve is connected to the end of the demineralized water supply pipe for the first condensate tank; a demineralized water supply pipe for the second condensate tank is connected to the top of the second condensate tank, and a third solenoid valve is connected to the end of the demineralized water supply pipe for the second condensate tank; the third solenoid valve and the second solenoid valve are both connected to the demineralized water supply pipe.

[0011] Optionally, a seventh pipeline is connected to the rear end of the third water pump, and a fourth solenoid valve is installed on the seventh pipeline.

[0012] Optionally, a thermometer and a water level gauge are installed in the first condensate tank and the second condensate tank.

[0013] The technical solution provided in this application may include the following beneficial effects: This device achieves graded and classified use of condensate by adding a condensate tank and modifying the control method as needed. At the same time, the condensate returning to the deoxygenated water tank in the power workshop has a higher temperature, reducing the steam consumption required to heat the deoxygenated water to the set temperature, thereby reducing natural gas consumption. The two condensate tanks work together to reduce the generation of low-temperature condensate and minimize energy waste caused by water imbalance.

[0014] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0015] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0016] Figure 1 This is a schematic diagram of the structure shown in the embodiments of this application; Figure label: 1. First condensate tank; 11. First drain valve; 12. First condensate tank overflow pipe; 2. Condensate recovery pipeline assembly; 3. Second condensate tank; 31. Second drain valve; 32. Second condensate tank overflow pipe; 4. Demineralized water replenishment pipeline; 41. First condensate tank demineralized water replenishment pipeline; 42. Second condensate tank demineralized water replenishment pipeline; 5. First pipeline; 6. Second pipeline; 7. Third pipeline; 8. Fourth pipeline; 9. Fifth pipeline; 91. Sixth pipeline; 92. Seventh pipeline; M1. First water pump; M2. Second water pump; M3. Third water pump; D1. First solenoid valve; D2. Second solenoid valve; D3. Third solenoid valve; D4. Fourth solenoid valve; V1. First shut-off valve; V2. Second shut-off valve. Detailed Implementation

[0017] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0018] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0019] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0020] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] To address the aforementioned problems, this application provides a system for recovering and utilizing steam condensate from cigarette factories. The technical solution of this application embodiment is described in detail below with reference to the accompanying drawings.

[0022] The original silk-making workshop's thin-plate drying machine and main equipment group (stem washing machine, stem pressing machine, leaf rehydration, and spice kitchen) used dedicated condensate discharge pipes to collect condensate water locally into condensate tanks. Simultaneously, the power workshop provided demineralized water to adjust the water in the condensate tanks to a suitable temperature for use by the silk-making main equipment group. When the water level exceeded the set value, the condensate water was returned to the power workshop for boiler use. For example... Figure 1 The cigarette factory steam condensate recovery and utilization system shown includes a condensate recovery pipeline group 2, a first condensate tank 1, a second condensate tank 3, a piping system, a water pump and a solenoid valve. The first condensate tank 1 has a first drain valve 11 at its bottom, connecting to the inside of the tank, and a first condensate tank overflow pipe 12 at its top, connecting to the rear end of the first drain valve 11. The condensate recovery pipe assembly 2 of this application is connected to the top of the first condensate tank 1. A first pipe 5 is provided at the bottom of the first condensate tank 1. A first shut-off valve V1 is connected to the end of the first pipe 5. A second water pump M2 is provided behind the first shut-off valve V1. A third pipe 7 is provided behind the second water pump M2. A fifth pipe 9 is provided at the bottom of the first condensate tank 1. A third water pump M3 is provided on the fifth pipe 9. A sixth pipe 91 is provided at the rear end of the third water pump M3 and connected to the top of the second condensate tank 3. A first solenoid valve D1 is provided on the second condensate tank 3. A fourth pipe 8 is installed at the bottom of the second condensate tank 3. A second shut-off valve V2 is connected to one end of the fourth pipe 8. A second pipe 6 is connected to the rear end of the second shut-off valve V2. A first water pump M1 is connected to the end of the second pipe 6. The rear end of the first water pump M1 is connected to a third pipe 7. A first condensate tank demineralized water supply pipe 41 is connected to the top of the first condensate tank 1, and a second solenoid valve D2 is connected to the end of the first condensate tank demineralized water supply pipe 41. A second condensate tank demineralized water supply pipe 42 is connected to the top of the second condensate tank 3, and a third solenoid valve D3 is connected to the end of the second condensate tank demineralized water supply pipe 42. The third solenoid valve D3 and the second solenoid valve D2 are both connected to the demineralized water supply pipe 4. A seventh pipe 92 is connected to the rear end of the third water pump M3, and a fourth solenoid valve D4 is installed on the seventh pipe 92. A thermometer and a water level gauge are installed inside the first condensate tank 1 and the second condensate tank 3.

[0023] In this application, the first condensate tank 1 and the second condensate tank 3 both have a volume of 24 cubic meters and dimensions of Φ3.2×3m. The condensate generated by the thin plate drying machine and the main equipment group is transported to the first condensate tank 1 through the condensate recovery pipeline group 2.

[0024] The system supplies condensate water to the main equipment group through the first condensate tank 1 via the first pipeline 5. The outlet of the first pipeline 5 is connected to the inlet of the second pipeline 6 and the third pipeline 7. A first water pump M1 is installed on the second pipeline 6, and a second water pump M2 is installed on the third pipeline 7. The first water pump M1 and the second water pump M2 are used in pairs, with one serving as a backup. The outlets of the second pipeline 6 and the third pipeline 7 are connected to the inlet of the main equipment group in the silk-making workshop. A water pressure detection device is installed before the inlet of the main equipment group. The first condensate tank 1 serves as a drainage pipe for supplying water to the power workshop when there is interference from condensate recovery via the fifth pipeline 9. A third water pump M3 is installed on the fifth pipeline 9. When the temperature of the first condensate tank 1 is too high or the water level is too low, demineralized water is added through the first condensate tank demineralized water replenishment pipe 41 for adjustment. A second solenoid valve D2 is installed on the first condensate tank demineralized water replenishment pipe 41.

[0025] The system utilizes existing piping and is modified by adding a second condensate tank 3. A sixth pipe 91 is added between the first condensate tank 1 and the second condensate tank 3. The outlet of the fifth pipe 9 is connected to the inlet of the sixth pipe 91 and the seventh pipe 92. The outlet of the sixth pipe 91 is connected to the second condensate tank 3, and the outlet of the seventh pipe 92 is connected to the deaerator in the power workshop. A first solenoid valve D1 is installed on the sixth pipe 91, and a fourth solenoid valve D4 is installed on the seventh pipe 92. By controlling the opening and closing of the solenoid valves, the system controls the flow of condensate from the first condensate tank 1 to the second condensate tank 3 or to the deaerator in the power workshop when there is an excess of condensate.

[0026] A fourth pipeline 8 is added as the water supply pipeline from the second condensate tank 3 to the main equipment group in the silk-making workshop. A second shut-off valve V2 is installed on the fourth pipeline 8, and a first shut-off valve V1 is added to the first pipeline 5. The outlet of the fourth pipeline 8 is connected to the inlet of the second pipeline 6 and the third pipeline 7.

[0027] A new demineralized water supply pipe 42 for the second condensate tank is added. A third solenoid valve D3 is installed on the demineralized water supply pipe 42 for the second condensate tank. Demineralized water is supplied from the power workshop to the second condensate tank 3 through the demineralized water supply pipe 42.

[0028] The first condensate tank 1 and the second condensate tank 3 are respectively equipped with a water level sensor and a temperature sensor. The water level sensor is used to detect the water level in the first condensate tank 1 and the second condensate tank 3, and the temperature sensor is used to detect the water temperature in the first condensate tank 1 and the second condensate tank 3.

[0029] The first condensate tank 1 and the second condensate tank 3 are also equipped with a first drain valve 11 and a second drain valve 31, respectively. The first drain valve 11 and the second drain valve 31 are located at the bottom of the first condensate tank 1 and the second condensate tank 3, respectively. The water in the first condensate tank 1 and the second condensate tank 3 can be drained through the first drain valve 11 and the second drain valve 31, which facilitates the maintenance of the first condensate tank 1, the second condensate tank 3 and the corresponding pipes.

[0030] The first condensate tank 1 and the second condensate tank 3 are also equipped with a first condensate tank overflow pipe 12 and a second condensate tank overflow pipe 32, respectively. The water in the first condensate tank 1 and the second condensate tank 3 can be discharged into the drainage ditch through the first condensate tank overflow pipe 12 and the second condensate tank overflow pipe 32.

[0031] The system uses an electronic control system and a fourth water pump, which is installed on the demineralized water supply pipe 4. The electronic control system is connected to the water level sensor and temperature sensor of the first condensate tank 1 and the second condensate tank 3, respectively. The electronic control system stores a preset program. When the water level in the second condensate tank 3 is lower than the preset lower limit, the electronic control system controls the first solenoid valve D1 to open, and the third water pump M3 pumps the high-temperature condensate from the first condensate tank 1 into the second condensate tank 3. When the water temperature in the second condensate tank 3 is higher than the preset upper limit, the electronic control system controls the third solenoid valve D3 to open, and the fourth water pump delivers demineralized water from the power workshop to the second condensate tank 3. When the water level in the first condensate tank 1 is higher than the preset upper limit, if the water level in the second condensate tank 3 is detected to be lower than the preset upper limit, the first solenoid valve D1 is controlled to open and the fourth solenoid valve D4 is closed, prioritizing water supply to the second condensate tank 3. If the water level in the second condensate tank 3 is detected to be higher than the preset upper limit, the first solenoid valve D1 is controlled to close and the fourth solenoid valve D4 is controlled to open, delivering condensate to the deoxygenated water tank in the power workshop.

[0032] Under normal operating conditions, the first shut-off valve V1 is fully closed and the second shut-off valve V2 is fully open, and the second condensate tank 3 supplies the process water required for production to the main equipment group in the silk-making workshop.

[0033] When the second condensate tank malfunctions and needs maintenance, the first shut-off valve V1 is fully open and the second shut-off valve V2 is fully closed. Demineralized water is then replenished to the set temperature range for use in the silk-making workshop through the demineralized water replenishment pipe 41 of the first condensate tank.

[0034] Thus, by adding a condensate tank and modifying the control method as needed, this application achieves the graded and classified use of condensate. At the same time, the condensate returning to the deoxygenated water tank in the power workshop has a higher temperature, reducing the steam consumption required to heat the deoxygenated water to the set temperature, thereby reducing natural gas consumption. The two condensate tanks work together to reduce the generation of low-temperature condensate and minimize energy waste caused by water imbalance.

[0035] This application involves on-site recycling of condensate. Based on the different needs of condensate users, condensate at around 70°C is supplied to the main equipment in the silk-making workshop. Unused high-temperature condensate is sent back to the boiler room, realizing two-stage utilization of condensate and maximizing the use of condensate and the heat it carries. Furthermore, by classifying and sorting water use, the generation of low-temperature condensate is greatly reduced, avoiding the conversion of high-grade heat energy into low-grade heat energy, and also avoiding the discharge caused by unused boiler heat.

[0036] Finally, it should be noted that in this document, relationships such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "include," "contain," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0037] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0038] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A system for recovering and utilizing steam condensate from a cigarette factory, comprising a condensate recovery pipeline assembly, characterized in that, Also includes: First condensate tank, second condensate tank, piping system, water pump and solenoid valve; The condensate recovery pipeline assembly is connected and installed at the top of the first condensate tank; A first pipeline is provided at the bottom of the first condensate tank, a first shut-off valve is connected to the end of the first pipeline, a second water pump is provided behind the first shut-off valve, and a third pipeline is provided behind the second water pump. A fifth pipeline is provided at the bottom of the first condensate tank, a third water pump is provided on the fifth pipeline, a sixth pipeline is provided at the rear end of the third water pump and connected to the top of the second condensate tank, and a first solenoid valve is provided on the second condensate tank. A fourth pipe is provided at the bottom of the second condensate tank. A second shut-off valve is connected to one end of the fourth pipe. A second pipe is connected to the rear end of the second shut-off valve. A first water pump is connected to one end of the second pipe. The rear end of the first water pump is connected to a third pipe.

2. The cigarette factory steam condensate recovery and utilization system according to claim 1, characterized in that: A first drain valve is provided at the bottom of the first condensate tank, which connects to the inside of the tank, and an overflow pipe of the first condensate tank is provided at the top, which connects to the rear end of the first drain valve.

3. The cigarette factory steam condensate recovery and utilization system according to claim 1, characterized in that: A second drain valve is provided at the bottom of the second condensate tank, which connects to the inside of the tank, and an overflow pipe of the second condensate tank is provided at the top, which connects to the rear end of the second drain valve.

4. The cigarette factory steam condensate recovery and utilization system according to claim 1, characterized in that: A demineralized water supply pipe is connected to the top of the first condensate tank, and a second solenoid valve is connected to the end of the demineralized water supply pipe; a demineralized water supply pipe is connected to the top of the second condensate tank, and a third solenoid valve is connected to the end of the demineralized water supply pipe; the third solenoid valve and the second solenoid valve are both connected to the demineralized water supply pipe.

5. A cigarette factory steam condensate recovery and utilization system according to claim 1, characterized in that: A seventh pipeline is connected to the rear end of the third water pump, and a fourth solenoid valve is installed on the seventh pipeline.

6. The cigarette factory steam condensate recovery and utilization system according to claim 1, characterized in that: Thermometers and water level gauges are installed in the first condensate tank and the second condensate tank.

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