Air-cooled water recycling device

Abstract

The utility model relates to an air cooling water recycling device, the device includes air cooling water pool, blowdown pipeline, circulating pool, outlet tube, heat exchange equipment, backwater pipe, side filter device, blowdown device, on -line conductivity monitoring equipment, fresh water makeup pipe, increase the pipeline on the basis of original air cooling water pool blowdown pipeline, the water of air cooling water pool is introduced into circulating pool partly, and through setting on -line conductivity monitoring equipment on circulating pool, it is convenient according to the water quality situation of circulating water to adjust the amount of air cooling water into circulating pool in time, thereby recycling the water in air cooling water pool and the reagent therein into circulating pool and utilizing again, reduce sewage treatment cost, circulating water treatment reagent cost and circulating water pool fresh water makeup amount, reduce production cost.

Description

Technical Field

[0001] This utility model relates to the field of chemical technology, and more specifically, to an air-cooled water recovery and utilization device. Background Technology

[0002] The condenser in a distillation column is typically an air-cooled condenser located at the top of the column. Water circulation within the condenser can be either closed-loop or open-loop. In a closed-loop system, cooling water absorbs heat from the air-cooled condenser and then flows directly through pipes to a cooling device (such as a plate heat exchanger) for further cooling before being pumped back to the air-cooled unit. This process avoids contact with outside air and uses demineralized water for makeup, resulting in virtually no air-cooled water loss. It also prevents the entry of dust, microorganisms, and other impurities from the air, slowing down water quality deterioration at its source. While closed-loop air-cooling technology has low operating costs and requires almost no makeup water, its application in actual production is limited due to high initial equipment investment, high maintenance costs, relatively low heat exchange efficiency, stringent safety and explosion-proof requirements, and complex water quality management, especially in southern regions where water costs are lower. In an open-loop system, bacteria and algae can proliferate in the air-cooled water tank over time, leading to scaling and reduced heat exchange efficiency. Regular addition of chemicals is necessary to remove the slime and algae. Due to factors such as chemical residue, pipe wall corrosion, and water evaporation and concentration, the conductivity of air-cooled water continuously increases, leading to corrosion and thinning of the air-cooled tube bundles. Chemicals need to be added to inhibit corrosion. The air-cooled water tank maintains a low conductivity level through continuous sludge discharge to slow down equipment corrosion. However, since the sludge from the air-cooled water tank is directly discharged into the wastewater tank, water is wasted and wastewater treatment costs are incurred. Furthermore, the chemicals added to the air-cooled water are also discharged into the wastewater tank during sludge discharge, resulting in chemical waste. Therefore, it is necessary to develop an air-cooled water recycling device to reduce production costs. Utility Model Content

[0003] This invention provides an air-cooled water recycling device. It adds a pipeline to the existing air-cooled water tank's sewage discharge line, introducing a portion of the water from the air-cooled water tank into a circulating water tank. By installing an online conductivity monitoring device on the circulating water tank, the amount of air-cooled water entering the circulating water tank can be adjusted in a timely manner based on the water quality. This allows the water and chemicals in the air-cooled water tank to be recycled back into the circulating water tank for reuse, reducing wastewater treatment costs, circulating water treatment chemical costs, and the amount of fresh water needed to replenish the circulating water tank, thereby lowering production costs.

[0004] This utility model provides an air-cooled water recycling device, which includes an air-cooled water tank, which is connected to a circulating water tank through a sewage pipeline. The circulating water tank is connected to a heat exchange device through an outlet pipe, and the heat exchange device is connected to the circulating water tank through a return pipe. A circulating water pump is installed on the outlet pipe. The circulating water tank is connected to a side-filter device, a sewage discharge device, an online conductivity monitoring device, and a fresh water replenishment pipe.

[0005] When in use, the device discharges a portion of the water from the air-cooled water tank to the circulating water tank. The circulating water pump then pumps the water from the circulating water tank into the heat exchange equipment and back to the circulating water tank. When the water quality in the circulating water tank (e.g., conductivity <1200μs / cm, turbidity ≤10NTU, etc.) does not meet the standards, the amount of water discharged from the air-cooled water tank to the circulating water tank is reduced. At the same time, a sewage discharge device is used for forced sewage discharge. If necessary, a side-filter device is used to filter the water in the circulating water tank. When necessary, fresh water is added to the circulating water tank through a fresh water supply pipe.

[0006] This utility model's air-cooled water recycling device adds a pipeline to the original air-cooled water tank's sewage discharge pipeline, introducing part of the water from the air-cooled water tank into a circulating water tank. By installing an online conductivity monitoring device on the circulating water tank, the amount of air-cooled water entering the circulating water tank can be adjusted in a timely manner according to the water quality. This allows the water and chemicals in the air-cooled water tank to be recycled into the circulating water tank for reuse, reducing sewage treatment costs, circulating water treatment chemical costs, and the amount of fresh water replenished to the circulating water tank, thereby lowering production costs.

[0007] Furthermore, the sewage pipeline includes a main sewage pipe and a branch sewage pipe installed on the main sewage pipe. The inlet end of the main sewage pipe is connected to the air-cooled water tank, and the outlet end of the main sewage pipe is connected to the circulating water tank. An electromagnetic flow meter and a first flow regulating valve are installed on the main sewage pipe near the circulating water tank, and a second flow regulating valve is installed on the branch sewage pipe.

[0008] In the above technical solution, the electromagnetic flow meter, the first flow regulating valve, and the second flow regulating valve, together with the online conductivity monitoring equipment, facilitate timely adjustment of the amount of air-cooled water entering the circulating water pool according to the water quality of the circulating water.

[0009] Furthermore, the side-filter device includes a side-filter inlet pipe, a side-filter water pump, a side-filter tank, a side-filter product water pipe, and a side-filter sewage pipe. The side-filter inlet pipe is connected to the circulating water tank, and the side-filter inlet pipe is connected to the side-filter tank via the side-filter water pump. The outlet of the side-filter tank is connected to the side-filter product water pipe and the side-filter sewage pipe, respectively. The side-filter product water pipe is connected to the circulating water tank.

[0010] In the above technical solution, the water in the circulating water tank enters the side filter tank through the side filter inlet pipe and the side filter delivery pump. After filtration, one path is discharged through the side filter sewage pipe, and the other path is returned to the circulating water tank through the side filter production water pipe, thereby achieving filtration of the water in the circulating water tank and improving the water quality in the circulating water tank.

[0011] Furthermore, the side-filter device is configured as two sets, with the two sets of side-filter devices arranged side by side.

[0012] In the above technical solution, the filtration efficiency can be improved by setting up two sets of parallel side-filter devices, and the water quality in the circulating water tank can be improved quickly.

[0013] Furthermore, the sewage discharge device includes a sewage discharge pipe, which is divided into two branches, one of which is equipped with a manual valve and the other with a solenoid valve.

[0014] In the above technical solution, the sewage discharge pipe is divided into two paths. One path with a manual valve is in a normally open state. When the conductivity of the water in the circulating water tank is greater than 1200μs / cm, the solenoid valve in the sewage discharge pipe will automatically open, increasing the sewage discharge volume of the circulating water and ensuring that the conductivity is qualified.

[0015] Furthermore, the air-cooled water tank includes an isomerized air-cooled water tank and an isooctane air-cooled water tank, which are connected to the circulating water tank via sewage pipelines.

[0016] The above technical solution enables the recycling and reuse of water in the isomerized air-cooled water pool and the isooctane air-cooled water pool.

[0017] Furthermore, the air-cooled water tank is equipped with an air-cooled water fan.

[0018] In the above technical solution, an air-cooled water fan is installed in the air-cooled water tank to facilitate the cooling of the water in the air-cooled water tank.

[0019] Furthermore, the circulating water tank is equipped with a circulating water fan.

[0020] In the above technical solution, a circulating water fan is installed in the circulating water tank to facilitate the cooling of the water in the circulating water tank.

[0021] Furthermore, the online conductivity monitoring device is an online conductivity meter.

[0022] Online conductivity meters are common online conductivity monitoring devices. Setting up an online conductivity monitoring device as an online conductivity meter is a low-cost solution.

[0023] The beneficial effects of this utility model are as follows: The air-cooled water recycling device of this utility model adds a pipeline to the original air-cooled water tank sewage pipeline to introduce part of the water from the air-cooled water tank into the circulating water tank. By installing an online conductivity monitoring device on the circulating water tank, it is easy to adjust the amount of air-cooled water entering the circulating water tank in a timely manner according to the water quality of the circulating water. This allows the water and chemicals in the air-cooled water tank to be recycled into the circulating water tank for reuse, reducing sewage treatment costs, circulating water treatment chemical costs, and the amount of fresh water replenished to the circulating water tank, thereby reducing production costs. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the air-cooled water recycling device of this utility model; Figure 2 This is a schematic diagram of the side-filter device in this utility model; The system includes: isomerization air-cooled water tank 1, isooctane air-cooled water tank 1', main drain pipe 21, branch drain pipe 22, electromagnetic flow meter 23, first flow regulating valve 24, second flow regulating valve 25, circulating water tank 3, outlet pipe 4, heat exchange equipment 5, return water pipe 6, circulating water pump 7, side filter device 8, side filter inlet pipe 81, side filter water pump 82, side filter tank 83, side filter product water pipe 84, side filter sewage pipe 85, sewage pipe 91, manual valve 92, solenoid valve 93, online conductivity monitoring equipment 10, fresh water replenishment pipe 11, air-cooled water fan 12, and circulating water fan 13. Detailed Implementation

[0026] To facilitate understanding of this invention, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the invention. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0027] Please refer to Figure 1-2 The present invention discloses an air-cooled water recycling device, comprising an air-cooled water tank, which is connected to a circulating water tank 3 via a sewage discharge pipeline. The circulating water tank 3 is connected to a heat exchange device 5 via an outlet pipe 4. The heat exchange device 5 is connected to the circulating water tank 3 via a return water pipe 6. A circulating water pump 7 is installed on the outlet pipe 4. The circulating water tank 3 is connected to a side filter device 8, a sewage discharge device, an online conductivity monitoring device 10, and a fresh water replenishment pipe 11.

[0028] Among them, the heat exchange device 5 can be a heat exchanger, but is not limited to it; the circulating water pump 7 is used to pump water from the circulating water tank 3 into the heat exchange device 5 and return it to the circulating water tank 3; the side filter device 8 is used to filter the water in the circulating water tank 3 when the turbidity is high; the sewage discharge device is used to discharge part of the sewage in the circulating water tank 3; specifically, the online conductivity monitoring device 10 is an online conductivity meter, which is used to monitor the conductivity of the water in the circulating water tank 3; and the fresh water supply pipe 11 is used to replenish fresh water to the circulating water tank 3.

[0029] When in use, the device discharges part of the water in the air-cooled water tank to the circulating water tank 3. The circulating water pump 7 pumps the water in the circulating water tank 3 into the heat exchange equipment 5 and returns it to the circulating water tank 3. When the water quality in the circulating water tank 3 (such as conductivity <1200μs / cm, turbidity ≤10NTU, etc.) does not meet the standards, the amount of water discharged from the air-cooled water tank to the circulating water tank 3 is reduced. At the same time, the sewage discharge device is used for forced sewage discharge. If necessary, the side filter device 8 is used to filter the water in the circulating water tank 3. When necessary, fresh water is added to the circulating water tank 3 by the fresh water supply pipe 11. Specifically, every Monday, the following technical indicators are measured in circulating water tank 3: conductivity (<1200μs / cm), free residual chlorine (0.2-0.8mg / L), turbidity (≤10NTU), NT coefficient (1-10), S-8100NP reagent concentration (40-60mg / L), pH (8-9), scaling reference index LSI (1.8-2.4), and corrosion reference index RI (<6). After the modification, the dosage of chemicals in the air-cooled water tank can be increased appropriately (while controlling the concentration within the specified range). It should be noted that the conductivity and turbidity of the air-cooled water are usually higher than those in circulating water tank 3. The conductivity of the circulating water should be monitored to ensure it does not exceed 1200μs / cm, and the turbidity should be kept as stable as possible, preferably less than 10NTU, without any upward trend. These two indicators are mainly regulated by the forced discharge of circulating water and reducing the amount of air-cooled water entering circulating water tank 3.

[0030] The air-cooled water recycling device of this utility model reduces production costs mainly in the following three aspects: ① The wastewater discharged from the air-cooled water is recycled into the circulating water tank, which can reduce the amount of fresh water replenished into the circulating water tank and reduce the cost of fresh water; ② The amount of air-cooled water discharged into the sewage tank is reduced, saving sewage treatment costs; ③ The chemicals used in the air-cooled water tank are recycled into the circulating water tank for reuse, reducing chemical consumption and saving chemical costs for circulating water treatment.

[0031] Furthermore, the sewage pipeline includes a main sewage pipe 21 and a branch sewage pipe 22 installed on the main sewage pipe 21. The inlet end of the main sewage pipe 21 is connected to the air-cooled water tank, and the outlet end of the main sewage pipe 21 is connected to the circulating water tank 3. An electromagnetic flow meter 23 and a first flow regulating valve 24 are installed on the main sewage pipe 21 near the circulating water tank 3, and a second flow regulating valve 25 is installed on the branch sewage pipe 22.

[0032] In the above technical solution, by setting up the electromagnetic flowmeter 23, the first flow regulating valve 24, and the second flow regulating valve 25, and in conjunction with the online conductivity monitoring device 10, it is convenient to adjust the amount of air-cooled water entering the circulating water pool 3 in a timely manner according to the water quality of the circulating water.

[0033] Furthermore, such as Figure 2 As shown, the side-filter device 8 includes a side-filter inlet pipe 81, a side-filter water pump 82, a side-filter tank 83, a side-filter product water pipe 84, and a side-filter sewage pipe 85. The side-filter inlet pipe 81 is connected to the circulating water tank 3. The side-filter inlet pipe 81 is connected to the side-filter tank 83 via the side-filter water pump 82. The outlet of the side-filter tank 83 is connected to the side-filter product water pipe 84 and the side-filter sewage pipe 85, respectively. The side-filter product water pipe 84 is connected to the circulating water tank 3.

[0034] In the above technical solution, the water in the circulating water tank 3 enters the side filter tank 83 through the side filter inlet pipe 81 and the side filter water pump 82. After filtration, one path is discharged through the side filter sewage pipe 85, and the other path is returned to the circulating water tank 3 through the side filter product water pipe 84, thereby achieving filtration of the water in the circulating water tank 3 and improving the water quality in the circulating water tank 3.

[0035] Furthermore, the side-filter device 8 is configured as two sets, with the two sets of side-filter devices 8 arranged side by side.

[0036] In the above technical solution, by setting up two sets of parallel side-filter devices 8, the filtration efficiency can be improved and the water quality in the circulating water tank 3 can be improved quickly.

[0037] Furthermore, the sewage discharge device includes a sewage discharge pipe 91, which is divided into two paths, one of which is equipped with a manual valve 92 and the other with a solenoid valve 93.

[0038] In the above technical solution, the sewage pipe 91 is divided into two paths. One path with a manual valve 92 is in a normally open state. When the conductivity of the water in the circulating water tank 3 is greater than 1200μs / cm, the solenoid valve 93 in the sewage pipe 91 automatically opens, increasing the sewage discharge of the circulating water and ensuring that the conductivity is qualified.

[0039] Furthermore, the air-cooled water tank includes an isomerized air-cooled water tank 1 and an isooctane air-cooled water tank 1', which are connected to the circulating water tank 3 via sewage pipelines.

[0040] The above technical solution enables the recycling of water in isomerized air-cooled water tank 1 and isooctane air-cooled water tank 1'.

[0041] Furthermore, the air-cooled water tank is equipped with an air-cooled water fan 12.

[0042] In the above technical solution, by installing an air-cooled water fan 12 in the air-cooled water tank, it is convenient to cool the water in the air-cooled water tank.

[0043] Furthermore, the circulating water pool 3 is equipped with a circulating water fan 13.

[0044] In the above technical solution, a circulating water fan 13 is installed in the circulating water tank 3 to facilitate the cooling of the water in the circulating water tank 3.

[0045] This utility model's air-cooled water recycling device adds a pipeline to the original air-cooled water tank's sewage discharge pipeline, introducing part of the water from the air-cooled water tank into the circulating water tank 3. By installing an online conductivity monitoring device 10 on the circulating water tank 3, the amount of air-cooled water entering the circulating water tank 3 can be adjusted in a timely manner according to the water quality of the circulating water. This allows the water and chemicals in the air-cooled water tank to be recycled into the circulating water tank 3 for reuse, reducing sewage treatment costs, circulating water treatment chemical costs, and the amount of fresh water replenished to the circulating water tank 3, thereby lowering production costs.

[0046] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only 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 "comprising," "including," or any other variations thereof 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. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] Furthermore, unless otherwise explicitly 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 utility model according to the specific circumstances.

[0048] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can be referred to each other.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air-cooled water recycling device, characterized in that, The device includes an air-cooled water tank, which is connected to a circulating water tank via a sewage pipeline. The circulating water tank is connected to a heat exchange device via an outlet pipe. The heat exchange device is connected to the circulating water tank via a return pipe. A circulating water pump is installed on the outlet pipe. The circulating water tank is connected to a side-filter device, a sewage discharge device, an online conductivity monitoring device, and a fresh water replenishment pipe.

2. The air-cooled water recovery and utilization device according to claim 1, characterized in that, The sewage pipeline includes a main sewage pipe and a branch sewage pipe installed on the main sewage pipe. The inlet end of the main sewage pipe is connected to the air-cooled water tank, and the outlet end of the main sewage pipe is connected to the circulating water tank. An electromagnetic flow meter and a first flow regulating valve are installed on the main sewage pipe near the circulating water tank, and a second flow regulating valve is installed on the branch sewage pipe.

3. The air-cooled water recovery and utilization device according to claim 1, characterized in that, The side-filter device includes a side-filter inlet pipe, a side-filter water pump, a side-filter tank, a side-filter product water pipe, and a side-filter sewage pipe. The side-filter inlet pipe is connected to the circulating water tank, and the side-filter inlet pipe is connected to the side-filter tank via the side-filter water pump. The outlet of the side-filter tank is connected to the side-filter product water pipe and the side-filter sewage pipe, respectively. The side-filter product water pipe is connected to the circulating water tank.

4. The air-cooled water recovery and utilization device according to claim 1 or 3, characterized in that, The side-filter device is configured as two sets, which are arranged side by side.

5. The air-cooled water recovery and utilization device according to claim 1, characterized in that, The sewage discharge device includes a sewage discharge pipe, which is divided into two branches. One branch is equipped with a manual valve, and the other branch is equipped with a solenoid valve.

6. The air-cooled water recovery and utilization device according to claim 1, characterized in that, The air-cooled water tank includes an isomerized air-cooled water tank and an isooctane air-cooled water tank, which are connected to the circulating water tank via sewage pipelines.

7. The air-cooled water recovery and utilization device according to claim 1, characterized in that, The air-cooled water tank is equipped with an air-cooled water fan.

8. The air-cooled water recovery and utilization device according to claim 1, characterized in that, The circulating water tank is equipped with a circulating water fan.

9. The air-cooled water recovery and utilization device according to claim 1, characterized in that, The online conductivity monitoring device is an online conductivity meter.

Images