Boiler feed water quality treatment system

Abstract

The utility model discloses a boiler feed water quality treatment system which comprises a sodium ion resin exchange device and a reverse osmosis water purification unit which are connected in series, a multi-medium filter and an activated carbon filter are sequentially arranged at the front end of the sodium ion resin exchange device, the multi-medium filter is connected with a tap water source through a pipeline, and the activated carbon filter is connected with a reverse osmosis water purification unit through a pipeline. And the rear end of the reverse osmosis water purification unit is respectively connected with silk making equipment and a boiler feed pump. According to the boiler feed water quality treatment system disclosed by the utility model, the reverse osmosis water purification unit and the sodium ion resin exchange equipment are connected in series for use, and the reverse osmosis water purification unit is arranged behind the sodium ion resin exchange equipment, so that the service life of a reverse osmosis membrane can be effectively prolonged; the boiler feed water is subjected to operations such as impurity removal, salt removal, hardness removal and oxygen removal, so that the stable and reliable water supply is realized, and the water quality requirement of an industrial boiler is met; the boiler operation safety, the service life and the boiler energy efficiency can be improved, and strict control over the water quality of boiler feed water is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment systems, and more specifically, to a boiler feed water quality treatment system. Background Art

[0002] Cigarette manufacturing and processing companies place high demands on steam quality for tobacco production. Almost all tobacco factories are equipped with independent boilers to provide stable, high-dryness saturated steam for tobacco-making equipment, air conditioning, and employee bathing. However, current boiler feedwater does not meet industrial boiler water quality requirements, impacting boiler safety, service life, and energy efficiency.

[0003] Therefore, there is an urgent need for a boiler feed water quality treatment system. Utility Model Content

[0004] The purpose of the utility model is to provide a boiler feed water quality treatment system to solve the above-mentioned problems in the prior art, to ensure stable and reliable water supply and to meet the water quality requirements of industrial boilers.

[0005] The utility model provides a boiler feed water quality treatment system, which comprises: a sodium ion resin exchange device and a reverse osmosis pure water unit arranged in series, wherein the front end of the sodium ion resin exchange device is sequentially provided with a multi-media filter and an activated carbon filter, the multi-media filter is connected to a tap water source through a pipeline, and the rear end of the reverse osmosis pure water unit is respectively connected to a silk making device and a boiler feed water pump.

[0006] In the boiler feed water quality treatment system as described above, preferably, the multi-media filter includes a quartz sand filter.

[0007] In the boiler feed water quality treatment system as described above, preferably, a micron-level intrinsically safe filter component is provided between the sodium ion resin exchange device and the reverse osmosis pure water unit.

[0008] In the boiler feed water quality treatment system as described above, preferably, the micron-level intrinsically safe filter assembly includes a 1-micron intrinsically safe fine filter and a 5-micron intrinsically safe coarse filter arranged in sequence.

[0009] In the boiler feed water quality treatment system as described above, preferably, a softening water tank is provided between the sodium ion resin exchange device and the micron-grade intrinsically safe filter assembly.

[0010] In the boiler feed water quality treatment system as described above, preferably, a first booster pump is provided between the softening water tank and the micron-level intrinsically safe filter assembly, and a high-pressure pump is provided between the micron-level intrinsically safe filter assembly and the reverse osmosis pure water unit.

[0011] As described above, the boiler feed water quality treatment system, wherein, preferably, a reverse osmosis water production tank is provided at the rear end of the reverse osmosis pure water unit, and the reverse osmosis water production tank is provided between the reverse osmosis pure water unit and the silk-making equipment, and a silk-making line water booster pump is provided between the reverse osmosis water production tank and the silk-making equipment.

[0012] In the boiler feed water quality treatment system as described above, preferably, the reverse osmosis water production tank is also connected to the boiler feed water pump, a thermal deoxidation device is provided between the reverse osmosis water production tank and the boiler feed water pump, a second booster pump is provided between the reverse osmosis water production tank and the thermal deoxidation device, and a post-deoxidation water tank is provided between the thermal deoxidation device and the boiler feed water pump.

[0013] In the boiler feed water quality treatment system as described above, preferably, a high-pressure fine mist device is further provided at the rear end of the reverse osmosis water production tank, and a pure water booster pump is provided between the reverse osmosis water production tank and the high-pressure fine mist device.

[0014] As described above, in the boiler feed water quality treatment system, preferably, a reverse osmosis concentrated water tank is further provided at the rear end of the reverse osmosis pure water unit, and a concentrated water booster pump is provided at the rear end of the reverse osmosis concentrated water tank to inject the reverse osmosis concentrated water in the reverse osmosis concentrated water tank into the sewage treatment water reuse network through the concentrated water booster pump.

[0015] The utility model provides a boiler feed water quality treatment system. A reverse osmosis pure water unit and a sodium ion resin exchange device are used in series. The reverse osmosis pure water unit is placed after the sodium ion resin exchange device, which can effectively prolong the service life of the reverse osmosis membrane and improve the operating economy of the reverse osmosis membrane. The boiler feed water is subjected to operations such as decontamination, desalination, hardness removal, and deoxygenation to achieve stable and reliable water supply and meet the water quality requirements of GB / T1576-2018 for industrial boilers. The operational safety, service life, and energy efficiency of the boiler can be improved, and strict control of the water quality of the boiler feed water can be achieved. The traditional boiler disc filter is replaced by a multi-media filter and an activated carbon filter to filter large-particle organic and inorganic matter and reduce the turbidity of the tap water. At the same time, the activated carbon is used to adsorb and filter colored minerals and odors, with obvious effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described below with reference to the accompanying drawings, in which:

[0017] Figure 1 This is a structural block diagram of an embodiment of a boiler feed water quality treatment system provided by the present utility model.

[0018] Explanation of the accompanying drawings: 1-multi-media filter, 2-activated carbon filter, 3-sodium ion resin exchange equipment, 4-softened water tank, 5-first booster pump, 6-1 micron intrinsically safe fine filter, 7-5 micron intrinsically safe coarse filter, 8-high-pressure pump, 9-reverse osmosis pure water unit, 10-second booster pump, 11-thermal deoxidation equipment, 12-boiler feed water pump, 13-silk making equipment, 14-silk thread water booster pump, 15-high-pressure micro-mist equipment, 16-pure water booster pump, 17-reverse osmosis concentrated water tank, 18-concentrated water booster pump, 19-wastewater treatment reclaimed water reuse pipeline network, 20-reverse osmosis product water tank, 21-deoxidation post-water tank. DETAILED DESCRIPTION

[0019] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure, its application, or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of parts and steps, the composition of materials, numerical expressions, and numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0020] The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are simply used to distinguish different parts. Terms such as "include" or "comprising" mean that the elements preceding the term include the elements listed after the term, and do not exclude the possibility of also including other elements. Terms such as "upper," "lower," and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] In the present disclosure, when a specific component is described as being located between a first component and a second component, there may or may not be an intervening component between the specific component and the first component or the second component. When a specific component is described as being connected to another component, the specific component may be directly connected to the other component without an intervening component, or may not be directly connected to the other component but have an intervening component.

[0022] All terms (including technical or scientific terms) used in this disclosure have the same meaning as those understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined herein.

[0023] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0024] like Figure 1 As shown, the boiler feed water quality treatment system provided in this embodiment includes: a sodium ion resin exchange device 3 and a reverse osmosis pure water unit 9 arranged in series, wherein the front end of the sodium ion resin exchange device 3 is sequentially provided with a multi-media filter 1 and an activated carbon filter 2, the multi-media filter 1 is connected to a tap water source through a pipeline, and the rear end of the reverse osmosis pure water unit 9 is respectively connected to a silk making device 13 and a boiler feed water pump 12.

[0025] In some embodiments of the present invention, the multi-media filter 1 is a quartz sand filter. It should be noted that the present invention does not specifically limit the type of the multi-media filter 1.

[0026] During operation, the multi-media filter 1 processes large particles of organic and inorganic matter, and the activated carbon filter 2 removes organic pigments and odors in the water through adsorption. The advantages of the two complement each other, and the large organic and inorganic matter are filtered primarily; the sodium ion resin exchange device 3 replaces free ions through the exchange method to remove calcium and magnesium ions in the water, but the molecular polymer calcium and magnesium compounds (undissolved matter) cannot be removed; the reverse osmosis pure water unit 9 removes free calcium and magnesium ions through the reverse osmosis membrane, and its filtration removal capacity is limited and the filtration efficiency is extremely poor. The novel method places the sodium ion resin exchange device 3 before the reverse osmosis pure water unit 9 and operates them in series, which can overcome the shortcomings of both. That is, the sodium ion resin exchange device 3 is mainly used to remove free calcium and magnesium ions that have dissolved in water, and the reverse osmosis nano-scale filter membrane of the reverse osmosis pure water unit 9 is mainly used to block calcium and magnesium compounds and molecular polymers that are not dissolved in water. At the same time, it filters the decomposition products of the resin obtained after the introduction of the sodium ion resin exchange device 3 and the impurity particles in the industrial salt used to reduce the resin, thereby reducing the filtration load of the reverse osmosis membrane and increasing the service life of the reverse osmosis membrane.

[0027] Furthermore, a micron-level intrinsically safe filter assembly is provided between the sodium ion resin exchange device 3 and the reverse osmosis pure water unit 9. The reverse osmosis filter membrane used by the reverse osmosis pure water unit 9 is a nano-level filter material, which is relatively expensive. By providing a micron-level intrinsically safe filter assembly, the present invention can reduce the filtration load of the reverse osmosis filter membrane, allowing it to filter only nano-level high-molecular organic and inorganic substances, while larger micron-level particles are borne by the pre-placed micron-level intrinsically safe filter assembly. This can reduce the resistance of the reverse osmosis membrane of the reverse osmosis pure water unit 9 and increase its replacement life. Specifically, the micron-level intrinsically safe filter assembly includes a 1-micron intrinsically safe fine filter 6 and a 5-micron intrinsically safe coarse filter 7, which are arranged in sequence. It should be noted that the present invention does not specifically limit the number and model of the micron-level intrinsically safe filter assemblies.

[0028] Furthermore, a softened water tank 4 is provided between the sodium ion resin exchange device 3 and the micron-level intrinsically safe filter assembly. A first booster pump 5 is provided between the softened water tank 4 and the micron-level intrinsically safe filter assembly, and a high-pressure pump 8 is provided between the micron-level intrinsically safe filter assembly and the reverse osmosis pure water unit 9.

[0029] Furthermore, a reverse osmosis water production tank 20 is provided at the rear end of the reverse osmosis water purification unit 9, and the reverse osmosis water production tank 20 is provided between the reverse osmosis water purification unit 9 and the silk-making equipment 13. A silk-making water booster pump 14 is provided between the reverse osmosis water production tank 20 and the silk-making equipment 13. In tobacco processing enterprises, the silk-making equipment 13 needs to perform a rehumidification and wetting process on tobacco leaves and shredded tobacco. By connecting the silk-making equipment 13 with the reverse osmosis water purification unit 9, reverse osmosis purified water can be used in the silk-making equipment 13 instead of the original softened water or tap water, which can prevent the blockage of the nozzle by salt crystallization and improve the hygienic cleanliness of tobacco products, thereby expanding the scope of use of reverse osmosis purified water.

[0030] Furthermore, the reverse osmosis water production tank 20 is also connected to the boiler feed water pump 12. A thermal deoxidation device 11 is provided between the reverse osmosis water production tank 20 and the boiler feed water pump 12. A second booster pump 10 is provided between the reverse osmosis water production tank 20 and the thermal deoxidation device 11. A deoxidation post-water tank 21 is provided between the thermal deoxidation device 11 and the boiler feed water pump 12. The effective evaporation capacity Tg of the boiler feed water pump 12 is the sum of the evaporation capacities of all boiler feed water pumps 12 when the boiler is equipped with the actual maximum operating load. In one embodiment of the present invention, a total of four boiler feed water pumps 12 with an evaporation capacity of 12.5 t / h are provided, of which three are in use and one is in reserve, for a total evaporation capacity of 37.5 t / h. Furthermore, the effective volume Vo of the deoxidation post-water tank 21 is designed to be 75% of the boiler evaporation capacity. In one embodiment of the present invention, the effective evaporation capacity Tg of the boiler is 37.5 t / h, and the effective volume Vo of the deaerated water tank 21 is designed to be 28 t.

[0031] Furthermore, the reverse osmosis water tank 20 is used to store pure water that has been filtered through a nanofiltration membrane to remove salts and other particulate matter. Its volume is selected to be no less than the volume of the deoxygenated water tank 21; the difference is reserved for other non-boiler pure water, such as pure water for tobacco companies to make silk yarn, and pure water for air conditioning high-pressure micro-mist humidification. The calculation is as follows: ,in, Indicates the volume of the water tank after deaeration, in t.

[0032] Furthermore, a high-pressure fine mist device 15 is provided at the rear end of the reverse osmosis water production tank 20, and a pure water booster pump 16 is provided between the reverse osmosis water production tank 20 and the high-pressure fine mist device 15. In the tobacco processing industry, air conditioning is cooled and humidified using high-pressure fine mist. However, for atomizing nozzles with a diameter of only 0.2mm-0.3mm, even softened water can still cause salt crystallization, leading to nozzle clogging. The present invention connects the high-pressure fine mist device 15 to the reverse osmosis water production tank 20, allowing the high-pressure fine mist device 15 to use the purified water produced by the reverse osmosis pure water unit 9 for cooling and humidification, effectively preventing nozzle clogging and reducing replacement costs. This utility model expands the scope of use of reverse osmosis purified water. In the present invention, the water production of the reverse osmosis pure water unit 9 is equal to the sum of the effective evaporation capacity Tg of the boiler feed water pump 12 and other non-boiler water consumption. In one embodiment of the present invention, the effective evaporation capacity Tg of the boiler feed water pump 12 is 37.5t / h, the high-pressure micro-mist water consumption is 5t / h, and the water production of the reverse osmosis pure water unit 9 is 42.5 t / h.

[0033] The micron-grade intrinsically safe filter assembly of the present invention is designed to filter larger particles to reduce the load on the reverse osmosis filter membrane. Its filtration flow rate is designed to be 1.3 times the pure water output of the reverse osmosis pure water unit 9. In one embodiment of the present invention, the reverse osmosis pure water output of the reverse osmosis pure water unit 9 is 42.5 t / h, while the water output of the micron-grade intrinsically safe filter assembly is 55.25 t / h. Furthermore, the softened water storage tank volume of the upstream softened water tank 4 is equal to the flow rate of the downstream micron-grade intrinsically safe filter assembly.

[0034] Furthermore, the water output of the sodium ion resin exchange device 3 should meet the filling volume of the downstream water tank for 1 hour; in one embodiment of the present utility model, the water output of the sodium ion resin exchange device 3 is not less than 55t / h; the water output of the multi-media filter 1 and the activated carbon filter 2 should meet the softened water output requirements; the pressure and flow rate of the tap water source should be able to meet the water pressure requirements of its backwashing, and the flow rate of the tap water source should be The calculation formula is as follows:

[0035]

[0036] ,

[0037] ,

[0038] .

[0039] This utility model calculates and designs the capacity and volume of upstream equipment, such as the deaerator tank, reverse osmosis water production tank, reverse osmosis equipment water production capacity, and intrinsically safe filter water production capacity, based on the effective evaporation capacity of the boiler, inversely following the process flow. For the water buffer tank, its effective volume is designed based on the hourly filling volume at the operating flow rate, allowing for maintenance and pump downtime in special circumstances. In this utility model, the diameter of the connecting pipes between various components is designed based on a water flow rate of 0.5m / s to 2m / s.

[0040] Furthermore, a reverse osmosis concentrate tank 17 is provided at the rear end of the reverse osmosis pure water unit 9. A concentrate booster pump 18 is provided at the rear end of the reverse osmosis concentrate tank 17 to inject the reverse osmosis concentrate in the reverse osmosis concentrate tank 17 into the sewage treatment water reuse network 19 via the concentrate booster pump 18. During the reverse osmosis process of the reverse osmosis pure water unit 9, the filter membrane is backwashed to remove attached salts. During the filtration process, large molecular particles are continuously blocked, resulting in a certain amount of concentrate. This concentrate is non-toxic and harmless. The present invention recovers this concentrate by providing the reverse osmosis concentrate tank 17 and injecting it into the sewage treatment water reuse network 19 via the concentrate booster pump 18. This concentrate is then injected into the plant's reclaimed water (renewable water treated by the sewage treatment plant) for secondary use, such as landscaping. This improves water utilization and enables secondary use of the concentrate.

[0041] The utility model is suitable for the configuration and selection of water supply process equipment for boiler production in most areas, and is especially suitable for tobacco processing enterprises that have high requirements for boiler hygiene.

[0042] The boiler feed water quality treatment system provided by the embodiment of the present invention uses a reverse osmosis pure water unit and a sodium ion resin exchange device in series. Placing the reverse osmosis pure water unit after the sodium ion resin exchange device can effectively prolong the service life of the reverse osmosis membrane and improve the operating economy of the reverse osmosis membrane. The boiler feed water is subjected to operations such as decontamination, desalination, hardness removal, and deoxygenation to achieve stable and reliable water supply and meet the requirements of GB / T1576-2018 for industrial boiler water quality. It can improve the operating safety, service life, and energy efficiency of the boiler and achieve strict control of the water quality of the boiler feed water. The traditional boiler disc filter is replaced by a multi-media filter and an activated carbon filter to filter large-particle organic and inorganic matter and reduce the turbidity of tap water. At the same time, the activated carbon is used to adsorb and filter colored minerals and odors, with obvious effects.

[0043] Thus far, various embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details well known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.

[0044] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art will understand that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced with equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A boiler feed water quality treatment system, characterized in that: include: A sodium ion resin exchange device and a reverse osmosis pure water unit are arranged in series, wherein a multi-media filter and an activated carbon filter are sequentially arranged at the front end of the sodium ion resin exchange device, the multi-media filter is connected to a tap water source through a pipeline, and the rear end of the reverse osmosis pure water unit is respectively connected to a silk making device and a boiler feed water pump.

2. The boiler feed water quality treatment system according to claim 1, characterized in that: The multi-media filter includes a quartz sand filter.

3. The boiler feed water quality treatment system according to claim 1, characterized in that: A micron-level intrinsically safe filter component is provided between the sodium ion resin exchange device and the reverse osmosis pure water unit.

4. The boiler feed water quality treatment system according to claim 3, characterized in that: The micron-level intrinsically safe filter assembly includes a 1-micron intrinsically safe fine filter and a 5-micron intrinsically safe coarse filter arranged in sequence.

5. The boiler feed water quality treatment system according to claim 3, characterized in that: A softening water tank is provided between the sodium ion resin exchange device and the micron-grade intrinsically safe filter assembly.

6. The boiler feed water quality treatment system according to claim 5, characterized in that: A first booster pump is provided between the softened water tank and the micron-level intrinsically safe filter assembly, and a high-pressure pump is provided between the micron-level intrinsically safe filter assembly and the reverse osmosis pure water unit.

7. The boiler feed water quality treatment system according to claim 1, characterized in that: A reverse osmosis water production tank is provided at the rear end of the reverse osmosis pure water unit, and the reverse osmosis water production tank is provided between the reverse osmosis pure water unit and the silk-making equipment, and a silk-making water booster pump is provided between the reverse osmosis water production tank and the silk-making equipment.

8. The boiler feed water quality treatment system according to claim 7, characterized in that: The reverse osmosis water production tank is also connected to the boiler feed water pump, a thermal deoxidation device is provided between the reverse osmosis water production tank and the boiler feed water pump, a second booster pump is provided between the reverse osmosis water production tank and the thermal deoxidation device, and a deoxidation post-water tank is provided between the thermal deoxidation device and the boiler feed water pump.

9. The boiler feed water quality treatment system according to claim 7, characterized in that: A high-pressure fine mist device is further provided at the rear end of the reverse osmosis water production tank, and a pure water booster pump is provided between the reverse osmosis water production tank and the high-pressure fine mist device.

10. The boiler feed water quality treatment system according to claim 7, characterized in that: The rear end of the reverse osmosis pure water unit is also provided with a reverse osmosis concentrated water tank, and the rear end of the reverse osmosis concentrated water tank is provided with a concentrated water booster pump to inject the reverse osmosis concentrated water in the reverse osmosis concentrated water tank into the sewage treatment water reuse network through the concentrated water booster pump.

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