Water vapor condensation recycling system

Abstract

The utility model provides a kind of water vapor condensation recycling system, belong to water vapor condensation recycling technical field, comprising: with the steam pipeline of transmission used water vapor connection's water separator, water separator's gas outlet is connected with the air inlet of condenser;The liquid outlet of water separator and the condensate outlet of condenser are connected with the inlet of condensate tank by pipeline, the outlet of condensate tank is connected with the inlet of filter, the outlet of filter is connected with the inlet of ion exchanger, the outlet of ion exchanger is connected with the inlet of recovery soft water tank;Condensate tank is additionally provided with non-condensable gas emptying pipe;Condenser is surface type condenser or mixed type condenser.The system carries out recovery to water vapor's waste heat and water resource, and it is recycled again to production process, reduces water resource and heat energy's loss and demand, and energy-saving effect is remarkable, also reduces production cost.

Description

Technical Field

[0001] This utility model relates to the field of water vapor condensation recovery technology, and in particular to a water vapor condensation recovery and reuse system. Background Technology

[0002] In the production process of wear-resistant materials in the mining industry, steam is required to provide heat in multiple steps such as drying, grinding, and cleaning. However, due to the lack of low-grade heat users, the residual heat in the steam cannot be fully utilized. Current methods involve directly emitting this steam, resulting in significant heat loss and hindering energy conservation. This also leads to high water consumption (over 1500 tons per month) and high production costs for enterprises. Furthermore, besides providing heat energy, the condensate from this steam is nearly pure water and can be used as high-quality boiler feedwater or process water. Directly emitting the steam without recovery clearly results in a serious waste of water resources and heat energy.

[0003] Therefore, in order to respond to energy conservation and environmental protection policies, save company water, effectively reduce company costs, and increase company profits, how to recover and recycle water vapor has become an important research and development topic. Utility Model Content

[0004] This invention provides a water vapor condensation recovery and reuse system to solve the problem of resource and energy waste caused by the failure to recover water vapor waste heat and water resources in the prior art.

[0005] This utility model provides a steam condensation recovery and reuse system, comprising: a steam-water separator connected to a steam pipeline for transmitting used steam; the outlet of the steam-water separator being connected to the inlet of the condenser; the liquid outlet of the steam-water separator and the condensate outlet of the condenser being connected to the inlet of a condensate tank via pipelines; the outlet of the condensate tank being connected to the inlet of a filter; the outlet of the filter being connected to the inlet of an ion exchanger; and the outlet of the ion exchanger being connected to the inlet of a soft water recovery tank; the condensate tank is also equipped with a non-condensable gas venting pipe; and the condenser is a surface condenser or a hybrid condenser.

[0006] Furthermore, the gas-water separator includes a cylinder and internal components disposed within the cylinder. An air inlet pipe is provided in the middle of the side wall of the cylinder, an air outlet is provided at the top of the cylinder, and a liquid outlet is provided at the bottom of the cylinder.

[0007] Furthermore, the internal components include a sandwiched tube body, which is a double-layered tube structure formed by an inner tube and an outer tube arranged coaxially with the cylinder body, with a gap between the inner tube and the outer tube; the top of the outer tube is connected to the inner wall of the cylinder body through a funnel-shaped return plate; both the inner tube and the outer tube are hollow cylindrical structures with open top and bottom, the height of the inner tube is greater than the height of the outer tube, and the bottoms of the inner tube and the outer tube are at the same height; the air inlet pipe is located below the return plate.

[0008] Furthermore, the internal components also include a backflow cap, which is positioned directly above the inner tube, with a gap between the inner tube and the backflow cap; the backflow cap is a downward-opening circular structure, and the diameter of the backflow cap is larger than the diameter of the outer tube; multiple baffles are staggered above the backflow cap.

[0009] Furthermore, the intake pipe extends into the cylinder along the tangential direction of the inner wall surface.

[0010] Furthermore, multiple layers of L-shaped baffles are distributed along the circumferential direction on the inner wall of the cylinder. The multiple layers of L-shaped baffles are set on the inner wall of the cylinder between the return plate and the bottom of the outer tube; the opening of the L-shaped baffle near the air inlet pipe is perpendicular to the air inlet direction of the air inlet pipe.

[0011] Furthermore, multiple baffles are arranged in a spiral pattern on the inner wall of the cylinder, and the width of the baffles does not exceed the radius of the cylinder.

[0012] Furthermore, a ring of through holes is evenly distributed on the return plate, and the through holes are located on one side close to the inner wall of the cylinder.

[0013] Furthermore, a wire mesh demister is installed between the top baffle and the air outlet.

[0014] The water vapor condensation recovery and reuse system provided by this utility model uses ambient cold air and a cooling medium to condense water vapor, which effectively improves the condensation recovery speed. This allows the water vapor to be fully cooled → condensed → purified → reused, recovering the waste heat of the water vapor and water resources, and recycling them back into the production process. This strengthens the internal circulation of production water, reduces the loss and demand of water resources and heat energy, improves water resource utilization, reduces water waste, lowers water costs, and has significant energy-saving and consumption-reducing effects.

[0015] The steam-water separator provided in the above system uses a combination of centrifugal and gravity separation modes. By repeatedly changing the flow direction of water vapor through internal components, its flow path is extended, increasing the probability of liquid collision and convergence, and enlarging the separation space. This achieves multiple separations between gas and liquid, improving the separation efficiency and effect of water vapor and liquid droplets. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of a water vapor condensation recovery and reuse system provided in one embodiment of this utility model; Figure 2 A schematic diagram of the structure of a steam-water separator provided in one embodiment of this utility model; Figure 3 This is a schematic diagram of the structure and distribution of an L-shaped baffle provided in one embodiment of the present invention; Figure 4 This is a schematic diagram showing the structure and distribution of the baffle provided in one embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Steam-water separator; 2. Condenser; 3. Condensate tank; 4. Filter; 5. Ion exchanger; 6. Soft water recovery tank; 11. Cylinder; 12. Air inlet pipe; 13. Air outlet; 14. Liquid outlet; 31. Non-condensable gas vent pipe; 151. Inner pipe; 152. Outer pipe; 153. Reflux plate; 154. Reflux cap; 155. Baffle plate; 156. L-shaped baffle; 157. Through hole; 158. Wire mesh demister. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection.

[0020] like Figure 1 This utility model discloses a steam condensation recovery and reuse system, comprising: a steam-water separator 1 connected to a steam pipeline for transmitting used steam; the outlet 13 of the steam-water separator 1 connected to the inlet of a condenser 2; the liquid outlet 14 of the steam-water separator 1 and the condensate outlet of the condenser 2 are both connected to the inlet of a condensate tank 3 via pipelines; the outlet of the condensate tank 3 is connected to the inlet of a filter 4; the outlet of the filter 4 is connected to the inlet of an ion exchanger 5; and the outlet of the ion exchanger 5 is connected to the inlet of a recycled soft water tank 6; the condensate tank 3 is also provided with a non-condensable gas vent pipe 31; and the condenser 2 is a surface condenser or a hybrid condenser.

[0021] Used steam containing droplets is transported to steam-water separator 1 via a steam pipe. Neither the steam pipe nor steam-water separator 1 requires insulation; cooling is achieved using ambient air. After initial steam-water separation in separator 1, the uncondensed steam is sent to condenser 2 for heat exchange with a cooling medium (such as cooling water), further reducing its temperature and causing it to condense into liquid water. The completely condensed condensate in condenser 2 and the preliminarily separated condensate from steam-water separator 1 are collected in condensate tank 3. Non-condensable gases are discharged into the air through non-condensable gas vent pipe 31. Since steam and condensate are inevitably contaminated during transport, the condensate is first filtered in filter 4 to remove impurities and suspended solids. Then, it is sent to ion exchanger 5 for treatment with ion exchange resin, reducing water hardness. The resulting recycled soft water meets production requirements and can be reused in boilers and other water-using units.

[0022] The filter media in filter 4 is activated carbon or quartz sand, which are commonly used in the field of water treatment. The ion exchanger 5 is filled with anion and cation resins commonly used in the field of water treatment. The specific selection can be made by the technicians according to the production situation.

[0023] The aforementioned water vapor condensation recovery and reuse system effectively improves the condensation recovery speed by using ambient cold air and a cooling medium to condense water vapor. This allows the water vapor to be fully cooled, condensed, purified, and reused, recovering the waste heat and water resources from the water vapor and recycling them back into the production process. This strengthens the internal circulation of production water, reduces the loss and demand of water resources and heat energy, improves water resource utilization, reduces water waste, lowers water costs, and achieves significant energy-saving and consumption-reducing effects.

[0024] Currently, commonly used baffle-type steam-water separators rely solely on internal baffles for steam-water separation, resulting in low separation efficiency and insufficient separation effect due to short working fluid residence time. Therefore, if... Figure 2 Preferably, the gas-water separator 1 includes a cylinder 11 and internal components disposed in the cylinder 11. An air inlet pipe 12 is provided in the middle of the side wall of the cylinder 11, an air outlet 13 is provided at the top of the cylinder 11, and a liquid outlet 14 is provided at the bottom of the cylinder 11.

[0025] More preferably, the internal components include a sandwiched tube body, which is a double-layered tube structure formed by an inner tube 151 and an outer tube 152 coaxially arranged with the cylinder 11, with a gap between the inner tube 151 and the outer tube 152; the top of the outer tube 152 is connected to the inner wall of the cylinder 11 through a funnel-shaped return plate 153; both the inner tube 151 and the outer tube 152 are hollow cylindrical structures with open top and bottom, the height of the inner tube 151 is greater than the height of the outer tube 152, and the inner tube 151... The bottom of the inner tube 151 and the outer tube 152 are at the same height; the intake tube 12 is located below the return flow plate 153; the internal components also include a return flow cap 154, which is located directly above the inner tube 151, and there is a gap between the inner tube 151 and the return flow cap 154; the return flow cap 154 ​​is a downward-opening circular structure, and the diameter of the return flow cap 154 ​​is larger than the diameter of the outer tube 152; multiple baffles 155 are staggered above the return flow cap 154.

[0026] By coaxially aligning the cylinder 11 with the internal components, the centrifugal separation effect of gas and liquid can be improved. During the flow of water vapor in the steam-water separator 1, the water droplets within it collide with the internal components and the cylinder 11 due to inertia. The water vapor also changes its flow direction multiple times, extending its flow path and increasing the probability of liquid collision and convergence. This enlarges the separation space, achieving multiple separations between gas and liquid, and improving the separation efficiency and effect of water vapor and liquid droplets. Specifically, water vapor enters the cylinder 11 through the inlet pipe 12 and flows between the outer pipe 152 and the cylinder 11. The flow speed of the water vapor decreases as the space increases. During this period, some water droplets collide with the wall of the outer pipe 152 and the inner wall of the cylinder 11 and gather towards the bottom wall of the cylinder 11. The water vapor enters the inner pipe 151 through the bottom and flows upward. It is blocked by the return cap 154 ​​and overflows from its periphery. Then it flows upward again through the gap between the return cap 154 ​​and the cylinder 11. Finally, after being blocked and condensed by multiple baffles 155, it is discharged from the outlet 13. During this process, the water droplets that are collected gather downward through the interlayer between the inner pipe 151 and the outer pipe 152 to the bottom of the cylinder 11 and are finally discharged through the liquid outlet 14.

[0027] Preferably, the air inlet pipe 12 extends into the cylinder 11 along the tangential direction of the inner wall surface. Water vapor enters the cylinder 11 through the air inlet pipe 12 along the tangential direction of the inner wall surface of the cylinder 11, causing the water vapor to spiral down along the inner wall surface of the cylinder 11 under the action of centrifugal force, and centrifugal separation is achieved by utilizing centrifugal force.

[0028] like Figure 3Preferably, multiple layers of L-shaped baffles 156 are distributed in an alternating manner on the inner wall of the cylinder 11 along its circumferential direction. The multiple layers of L-shaped baffles 156 are disposed on the inner wall of the cylinder 11 between the return plate 153 and the bottom of the outer pipe 152; the opening of the L-shaped baffle 156 near the air inlet pipe 12 is perpendicular to the air inlet direction of the air inlet pipe 12. The L-shaped baffles 156 can reduce the flow velocity of water vapor entering the cylinder 11, accelerate the falling of water droplets and improve separation efficiency, so that the water droplets entrained therein are separated as early as possible when they first enter the cylinder 11.

[0029] like Figure 4 Preferably, multiple baffles 155 are spirally and alternately distributed on the inner wall of the cylinder 11, and the width of the baffles 155 does not exceed the radius of the cylinder 11. Water vapor changes its flow direction multiple times under the continuous obstruction of the spirally arranged baffles 155. The liquid contained in the gas condenses on the baffles 155 and drips downwards, finally being collected by the return plate 153 and discharged into the bottom of the cylinder 11.

[0030] like Figure 2 Preferably, a ring of through holes 157 is evenly distributed on the return plate 153, and the through holes 157 are located on the side near the inner wall of the cylinder 11. The main route of water vapor is to enter the upper space of the cylinder 11 through the inner pipe 151. In order to reduce the flow resistance of the steam-water separator 1, a ring of through holes 157 is provided on the return plate 153, so that a small part of water vapor can enter the upper space of the cylinder 11 through the through holes 157, thereby improving the smoothness and safety of the equipment operation.

[0031] like Figure 2 Preferably, a wire mesh demister 158 is provided between the uppermost baffle 155 and the air outlet 13. The wire mesh demister 158 has a large and more comprehensive contact area with the water vapor, which can further filter out the small amount of liquid remaining in the water vapor about to be discharged from the steam-water separator 1, thereby improving the separation effect.

[0032] It should be noted that arrows without reference numerals indicate the flow direction of gas-liquid mixtures, gas phases, or liquid phases.

[0033] In the steam condensation recovery and reuse system, used steam containing droplets is transported via steam pipes to steam-water separator 1. After initial steam-water separation in separator 1, the uncondensed steam is sent to condenser 2 for heat exchange with cooling water, further reducing its temperature and causing it to condense into liquid water. The completely condensed condensate in condenser 2 and the condensate initially separated in steam-water separator 1 are collected in condensate tank 3, while non-condensable gases are discharged into the air through non-condensable gas vent pipe 31. Since steam and condensate are inevitably contaminated during transport, the condensate is first filtered in filter 4 to remove impurities and suspended solids. Then, it is sent to ion exchanger 5 for treatment with ion exchange resin, reducing water hardness. The resulting recovered soft water meets production requirements and can be reused in boilers and other water-using units.

[0034] The working process of the steam-water separator 1 is as follows: Water vapor enters the cylinder 11 through the inlet pipe 12 along the tangential direction of the inner wall surface of the cylinder 11. Under the action of centrifugal force, it spirals down along the inner wall surface of the cylinder 11. During the descent, the gas comes into contact with the L-shaped baffles 156 distributed on the inner wall of the cylinder 11, causing the water droplets entrained therein to be collected and separated, and drip down the inner wall of the cylinder 11 to the bottom of the cylinder 11. Most of the separated gas enters the inner tube 151 through the bottom of the inner tube 151 and flows upward. It is blocked by the return cap 154 ​​and overflows from its periphery. Then it flows upward again through the gap between the return cap 154 ​​and the cylinder 11. A small part of the water vapor can enter the upper space of the cylinder 11 through the through hole 157 on the return plate 153 to reduce the flow resistance of the steam-water separator 1. Finally, after being continuously blocked by multiple baffles 155, the water vapor is further filtered by the wire mesh demister 158 to remove water droplets before being discharged from the outlet 13. During this process, the water droplets collected are discharged downward through the interlayer between the inner tube 151 and the outer tube 152 to the bottom of the cylinder 11, and finally discharged through the liquid outlet 14.

[0035] It should be noted that the detailed structure of some devices in this utility model is not described in detail, but belongs to the prior art known to those skilled in the art, and therefore will not be described again here. In addition, the parts of this device not described are the same as or can be implemented using existing technology.

[0036] It should be noted that those skilled in the art, under the guidance of this utility model, can also make some modifications to the design of the above system. For example, the equipment in the system is also equipped with level gauges, overflow / nitrogen pipelines, etc.; pumps, pressure sensors, flow meters or temperature sensors are installed on the conveying pipelines inside the system in different units or devices, and different valves, such as pressure relief valves, pressure regulating valves, safety valves, pneumatic valves, etc., are also installed to regulate and stabilize the pressure of the entire system, and the opening degree of the valves can also be adjusted to regulate the flow rate of materials in the pipeline, etc.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A water vapor condensation recovery and reuse system, characterized in that, include: A steam-water separator is connected to a steam pipeline that transmits used steam. The outlet of the steam-water separator is connected to the inlet of a condenser. The liquid outlet of the steam-water separator and the condensate outlet of the condenser are both connected to the inlet of a condensate tank via pipelines. The outlet of the condensate tank is connected to the inlet of a filter. The outlet of the filter is connected to the inlet of an ion exchanger. The outlet of the ion exchanger is connected to the inlet of a recycled soft water tank. The condensate tank is also equipped with a non-condensable gas vent pipe. The condenser is a surface condenser or a hybrid condenser.

2. The water vapor condensation recovery and reuse system according to claim 1, characterized in that, The gas-water separator includes a cylinder and internal components disposed in the cylinder. An air inlet pipe is provided in the middle of the side wall of the cylinder, an air outlet is provided at the top of the cylinder, and a liquid outlet is provided at the bottom of the cylinder. The internal components include a sandwiched tube body, which is a double-layered tube structure formed by an inner tube and an outer tube coaxially arranged with the cylinder body, with a gap between the inner tube and the outer tube; the top of the outer tube is connected to the inner wall of the cylinder body through a funnel-shaped return plate; both the inner tube and the outer tube are hollow cylindrical structures with open top and bottom, the height of the inner tube is greater than the height of the outer tube, and the bottoms of the inner tube and the outer tube are at the same height; the air inlet pipe is located below the return plate; The internal component also includes a backflow cap, which is positioned directly above the inner tube, and there is a gap between the inner tube and the backflow cap; the backflow cap is a downward-opening circular structure, and the diameter of the backflow cap is larger than the diameter of the outer tube; multiple baffles are staggered above the backflow cap.

3. The water vapor condensation recovery and reuse system according to claim 2, characterized in that, The air intake pipe extends into the cylinder along the tangential direction of the inner wall surface of the cylinder.

4. The water vapor condensation recovery and reuse system according to claim 3, characterized in that, Multiple layers of L-shaped baffles are staggered and arranged along the circumferential direction on the inner wall of the cylinder. The multiple layers of L-shaped baffles are arranged on the inner wall of the cylinder between the return plate and the bottom of the outer tube. The opening of the L-shaped baffle near the air inlet pipe is perpendicular to the air inlet direction of the air inlet pipe.

5. The water vapor condensation recovery and reuse system according to claim 2, characterized in that, Multiple baffles are arranged in a spiral pattern on the inner wall of the cylinder, and the width of each baffle does not exceed the radius of the cylinder.

6. The water vapor condensation recovery and reuse system according to claim 2, characterized in that, A ring of through holes is evenly distributed on the return plate, and the through holes are located on the side close to the inner wall of the cylinder.

7. The water vapor condensation recovery and reuse system according to any one of claims 2-6, characterized in that, A wire mesh demister is installed between the uppermost baffle and the air outlet.

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