Water collection and utilization system for copper smelting process

Abstract

The utility model relates to copper smelting water recycling, specifically relates to a kind of water collecting and utilizing system for copper smelting process, including water tank, the output end of waste heat boiler fixed drain pipe, the output end of sampler cooling water drain pipe are connected to water tank and with the inside communication of water tank, the input end of flash furnace front circulating water tank and / or water quenching circulating water tank is connected by conveying pipeline between water tank, water pump for conveying water tank in water to the water pump of flash furnace front circulating water tank and / or water quenching circulating water tank is set on conveying pipeline, the waste heat boiler fixed drain water of water quality better and sampler cooling water drainage can be collected, for flash furnace front circulating water tank and / or water quenching circulating water tank direct use, without first purification by waste water treatment pool, on the one hand, reduce the burden of waste water treatment, on the other hand, also reduce the additional water demand of flash furnace front circulating water tank and water quenching circulating water tank, help to reduce production cost.

Description

Technical Field

[0001] This utility model relates to the reuse of water in copper smelting, specifically to a system for collecting and utilizing water in the copper smelting process. Background Technology

[0002] In the copper smelting process, the steam condensate from the ash hopper of the steam dryer dust collector in the smelting workshop, the waste heat boiler drainage from the flash furnace, the cooling pure water for the boiler circulating pump shaft seal, the boiler sample water and sampler cooling water, as well as the instrument heat tracing condensate from the melting and blowing boilers, are all discharged through underground pipelines to the wastewater cooling pool in the power workshop. The power workshop treats the wastewater to meet standards before discharging or recycling it. Among these, the waste heat boiler drainage and sampler cooling water are generally of good quality and consumed in large quantities. This part of the water could be directly recycled into the circulating water tank in front of the flash furnace or the water quenching circulating water tank used for matte granulation for reuse. However, in the past, all of this water was treated as wastewater, resulting in a large waste of high-quality production water and a significant increase in the burden of wastewater treatment, which in turn increased production costs. This situation needs to be improved. Summary of the Invention

[0003] This utility model provides a water collection and utilization system for copper smelting process, which recovers and utilizes the waste heat boiler's constant drainage and sampler cooling water in the furnace front circulating water tank or water quenching circulating water tank, reducing the waste of clean water resources and lowering the burden of wastewater treatment.

[0004] To achieve the above objectives, the technical solution adopted is as follows: a copper smelting process water collection and utilization system, including a water tank, the output end of the waste heat boiler drain pipe and the output end of the sampler cooling water drain pipe are both connected to the water tank and communicate with the inside of the water tank, the input end of the flash furnace front circulating water tank and / or the input end of the water quenching circulating water tank are connected to the water tank by a conveying pipeline, and a water pump is installed on the conveying pipeline to convey the water in the water tank to the flash furnace front circulating water tank and / or the water quenching circulating water tank.

[0005] Compared with the prior art, the technical effect of this utility model is as follows: a water tank is set up to collect the waste heat boiler drain water and sampler cooling water drain water with better water quality. This part of the water can be transported to the flash furnace front circulating water tank and / or water quenching circulating water tank for direct use without first purifying it in the wastewater treatment pond. On the one hand, it reduces the wastewater treatment burden, and on the other hand, it reduces the waste of clean water resources. This also helps to reduce the additional water replenishment requirements and production costs of the flash furnace front circulating water tank and water quenching circulating water tank. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the overall system of this utility model;

[0007] Figure 2This is a schematic diagram of the water tank and its associated piping. Detailed Implementation

[0008] The following is in conjunction with the appendix Figure 1-2 The present invention will be further described in detail below, including related content:

[0009] A copper smelting process water collection and utilization system includes a water tank 10. The output end of the waste heat boiler drain pipe 20 and the output end of the sampler cooling water drain pipe 30 are both connected to the water tank 10 and communicate with the interior of the water tank 10. The input end of the flash furnace front circulating water tank 40 and / or the input end of the water quenching circulating water tank 50 are connected to the water tank 10 by a conveying pipeline 60. A water pump 70 is installed on the conveying pipeline 60 to convey the water in the water tank 10 to the flash furnace front circulating water tank 40 and / or the water quenching circulating water tank 50.

[0010] In the above scheme, a water tank 10 is set up to collect the waste heat boiler drain water with better water quality and the sampler cooling water. This part of the water can be transported to the flash furnace front circulating water tank 40 and / or water quenching circulating water tank 50 for direct use without first purifying it through the wastewater treatment pond 90. On the one hand, it reduces the wastewater treatment burden, and on the other hand, it reduces the waste of clean water resources. At the same time, it helps to reduce the additional water replenishment requirements of the flash furnace front circulating water tank 40 and the water quenching circulating water tank 50.

[0011] Here are some explanations of technical terms: In the copper smelting process, the waste heat boiler is an important piece of equipment used to recover heat for power generation or heating. It requires periodic drainage of water from its interior, and the water sampled from the waste heat boiler is called boiler sample water. In the water circulation system, the boiler sample water is extremely hot and needs to be cooled before collection and testing; therefore, there is sampler cooling water. The flash furnace pre-circulation water tank 40 is a pre-treatment water tank used to replenish the flash furnace cooling water circulation system, and its water quality requirements are relatively high. The water quenching circulation water tank 50 is a pre-treatment water tank used to replenish the water for the water quenching granulation process, and its water quality requirements are relatively low.

[0012] Furthermore, the conveying pipeline 60 includes a first pipeline 61 and a second pipeline 62. The input ends of both the first pipeline 61 and the second pipeline 62 are connected to the water tank 10. The output end of the first pipeline 61 is connected to the flash furnace pre-circulation water tank 40, and the output end of the second pipeline 62 is connected to the water quenching circulation water tank 50. The water collected in the water tank 10 is conveyed by the first pipeline 61 and the second pipeline 62 to the flash furnace pre-circulation water tank 40 and the water quenching circulation water tank 50 for use.

[0013] As a preferred embodiment, the first pipeline 61 includes two branch pipelines 611, each equipped with a high-power and a low-power water pump 70. The input ends of both branch pipelines 611 are connected to the interior of the water tank 10, and the output ends of both branch pipelines 611 are connected to the interior of the flash furnace circulating water tank 40. In this embodiment, the low-power water pump 70 is used for the recovery of circulating water during normal production, while the high-power water pump 70 is used for the recovery of boiler circulating water in emergency situations, i.e., when the boiler malfunctions and the drainage volume is large.

[0014] As a preferred embodiment, a valve is installed on the second pipeline 62, and the output end of the second pipeline 62 is connected to the input end of the rainwater tank 80. The output end of the rainwater tank 80 is connected to the input end of the water quenching circulation tank 50 and the input end of the wastewater treatment tank 100 via the third pipeline 63 and the fourth pipeline 64, respectively. Pumps 70 are installed on the third pipeline 63 and the fourth pipeline 64 to transport water from the rainwater tank 80 to the water quenching circulation tank 50 and the wastewater treatment tank 90, respectively. In this embodiment, considering that the water in the rainwater tank 80 can also be used by the water quenching circulation tank 50, the water in the water tank 10 can be output to the rainwater tank 80 via the second pipeline 62 for collection, and then transported to the water quenching circulation tank 50 via the third pipeline 63. Of course, the water in the rainwater tank 80 can also be output to the wastewater treatment tank 100 via the fourth pipeline 64 for wastewater recycling.

[0015] In addition, an overflow pipe 100, which communicates with the interior of the water tank 10, is connected to the tank wall near the top. The outlet of the overflow pipe 100 is connected to the rainwater pool 80. The purpose of the overflow pipe 100 is to reduce the water pressure in the water tank 10 when the water volume inside the water tank 10 is too high in a short period of time. Water in the water tank 10 can overflow into the rainwater pool 80 through the overflow pipe 100.

[0016] As a preferred option, such as Figure 2 As shown, the water tank 10 includes a tank body 11. Baffles 12 are vertically spaced at intervals in the horizontal direction at the bottom of the inner side of the tank body 11. The bottom edge of the baffle 12 forms a sealed connection with the inner bottom surface of the tank body 11, and the side edge of the baffle 12 forms a sealed connection with the tank wall of the tank body 11. A gap is left between the top edge of the baffle 12 and the inner top of the tank body 11. The areas between the tank wall and the baffles 12, as well as between adjacent baffles 12, form sedimentation chambers 13a, 13b, and 13c arranged sequentially. The output end of the boiler drain pipe 20 and the output end of the sampler cooling water drain pipe 30 are directly connected to sedimentation chamber 13a, and the input end of the conveying pipeline 60 is directly connected to sedimentation chamber 13c. It should be noted that, in order to visually see the baffles 12 inside the water tank 10, Figure 2 The water tank 10 shown in the image has a partial cut-out on one side wall, but there is no opening in the tank wall.

[0017] In this design, the internal space of the water tank 10 is divided by multiple partitions 12 to form sedimentation chambers 13a, 13b, and 13c. Water discharged from the boiler drain pipe 20 and the sampler cooling water drain pipe 30 into the water tank 10 first enters the sedimentation chamber 13a on one side of the tank and settles there (serving to separate and settle sludge). When the sedimentation chamber 13a is full, subsequent water injection can overflow from the top of the partition 12 into the sedimentation chamber 13b, and so on, until it overflows into the sedimentation chamber 13c, which is directly connected to the delivery pipeline 60, and finally the water is delivered to the delivery pipeline 60. It should be noted that this design is not limited to only three sedimentation chambers 13a, 13b, and 13c; additional partitions 12 can be added to form more sedimentation chambers.

[0018] It should be noted that the sedimentation chambers 13a, 13b, and 13c in the above scheme are settling the water entering the water tank 10 to further ensure the cleanliness of the water to a certain extent, not to completely purify the water in the water tank 10. The second pipeline 62 serves as a water supply pipeline to either the water quenching circulation tank 50 or the rainwater pool 80. Since the water required for the water quenching granulation process does not need to be extremely clean, the water entering the water tank 10 can be transported to the water quenching circulation tank 50 without sedimentation for use in the water quenching granulation process. Of course, water from the rainwater pool 80 can also be directly transported to the water quenching circulation tank 50.

[0019] Furthermore, the water tank 10 is equipped with an observation window, and a drain pipe 15 is installed at the bottom of the water tank 10, which communicates with each sedimentation chamber 13a, 13b, and 13c. The observation window allows observation of the accumulation of dirt at the bottom of each sedimentation chamber 13a, 13b, and 13c within the water tank 10, and the dirt can be discharged through the drain pipe 15. Of course, a valve can be installed on the drain pipe 15 to control the flow.

[0020] Furthermore, the top of the water tank 10 is provided with an exhaust pipe 14 that is connected to its interior, which is used to expel the air inside the water tank 10 and prevent the air pressure inside the tank from having a negative impact on the water inlet and outlet of the water tank 10.

[0021] Steam condensate for insulating the ash hopper of the steam dryer dust collector, pure water for cooling the shaft seal of the boiler circulating pump, boiler sample water, and boiler instrument heat tracing condensate are transported to water tank 10 through pipelines. The steam condensate for insulating the ash hopper of the steam dryer dust collector is water used to insulate the shell of the ash hopper. This water does not come into contact with the dust inside the dust collector and is relatively clean. The pure water for cooling the shaft seal of the boiler circulating pump is the bearing cooling water for the pump in the waste heat boiler water circulation system, and is also relatively clean. The boiler sample water is sample water periodically taken from the waste heat boiler for water quality testing. The boiler instrument heat tracing condensate is water used to maintain the operating temperature of instruments in cold environments. All of these waters are relatively clean and can be transported to water tank 10 for collection and reuse.

[0022] As a preferred embodiment, a level sensor (not shown in the figure) is installed inside the water tank 10. The height of the level sensor is the same as the height of the interface of the delivery pipeline 60 on the water tank 10. When the water level in the water tank 10 is lower than the height of the level sensor, the water pump 70 stops working; when the water level in the water tank 10 is higher than the height of the level sensor, the water pump 70 continues to work. The level sensor is used to monitor the water level in the water tank 10. Through the correlation between the level sensor and the water pump 70, when the water level in the water tank 10 is lower than the height of the level sensor, it indicates that the water level in the water tank 10 is lower than the height of the interface of the delivery pipeline 60 on the water tank 10, i.e., the water level is too low. The water pump 70 is then controlled to stop working, which avoids the water pump 70 running dry when there is a lack of water in the water tank 10, thus preventing damage to the water pump 70 or increased energy costs. The height at which the level sensor is installed inside the water tank 10 needs to be set according to actual production requirements.

Claims

1. A water collection and utilization system for copper smelting processes, comprising a water tank (10), characterized in that: The output end of the waste heat boiler drain pipe (20) and the output end of the sampler cooling water drain pipe (30) are both connected to the water tank (10) and communicate with the inside of the water tank (10). The input end of the flash furnace front circulating water tank (40) and / or the input end of the water quenching circulating water tank (50) are connected to the water tank (10) by a conveying pipeline (60). A water pump (70) is installed on the conveying pipeline (60) to convey the water in the water tank (10) to the flash furnace front circulating water tank (40) and / or the water quenching circulating water tank (50).

2. The water collection and utilization system for copper smelting process according to claim 1, characterized in that: The delivery pipeline (60) includes a first pipeline (61) and a second pipeline (62). The input ends of the first pipeline (61) and the second pipeline (62) are both connected to the water tank (10). The output end of the first pipeline (61) is connected to the circulating water tank (40) in front of the flash furnace, and the output end of the second pipeline (62) is connected to the water quenching circulating water tank (50).

3. The water collection and utilization system for copper smelting process according to claim 2, characterized in that: The first pipeline (61) includes two branch pipelines (611) and two water pumps (70) with a large power and a small power are respectively installed on the two branch pipelines (611). The input ends of the two branch pipelines (611) are connected to the inside of the water tank (10), and the output ends of the two branch pipelines (611) are connected to the inside of the flash furnace front circulating water tank (40).

4. The water collection and utilization system for copper smelting process according to claim 2, characterized in that: The second pipeline (62) is equipped with a valve and the output end of the second pipeline (62) is connected to the input end of the rainwater pool (80). The output end of the rainwater pool (80) is connected to the input end of the water quenching circulating water tank (50) and the input end of the wastewater treatment tank (90) through the third pipeline (63) and the fourth pipeline (64), respectively. The third pipeline (63) and the fourth pipeline (64) are respectively equipped with water pumps (70) for transporting the water in the rainwater pool (80) to the water quenching circulating water tank (50) and the wastewater treatment tank (90).

5. The water collection and utilization system for copper smelting process according to claim 4, characterized in that: An overflow pipe (100) is connected to the inside of the water tank (10) near the top of the tank wall. The output end of the overflow pipe (100) is connected to the rainwater pool (80).

6. The water collection and utilization system for copper smelting process according to claim 1, characterized in that: The water tank (10) includes a tank body (11). The bottom of the tank body (11) is vertically spaced with partitions (12) in the horizontal direction. The bottom edge of the partition (12) is sealed to the bottom surface of the tank body (11). The side edge of the partition (12) is sealed to the tank wall of the tank body (11). The top edge of the partition (12) is separated from the top of the tank body (11). The area between the tank wall and the partition (12) and between two adjacent partitions (12) forms sedimentation chambers (13a, 13b, 13c) arranged in sequence. The output end of the boiler drain pipe (20) and the output end of the sampler cooling water drain pipe (30) are directly connected to the sedimentation chamber (13a). The input end of the conveying pipeline (60) is directly connected to the sedimentation chamber (13c).

7. The water collection and utilization system for copper smelting process according to claim 6, characterized in that: An observation window is provided on the water tank (10), and a drain pipe (15) is provided at the bottom of the water tank (10) to connect with each sedimentation chamber (13a, 13b, 13c).

8. The water collection and utilization system for copper smelting process according to claim 1, characterized in that: The top of the water tank (10) is provided with an exhaust pipe (14) that is connected to its interior.

9. The water collection and utilization system for copper smelting process according to claim 1, characterized in that: Steam drying dust collector ash hopper insulation steam condensate, boiler circulating pump shaft seal cooling pure water, boiler sample water and boiler instrument heat tracing condensate are transported to water tank (10) through pipelines.

10. The water collection and utilization system for copper smelting process according to claim 1 or 3, characterized in that: A liquid level sensor is installed inside the water tank (10). The height of the liquid level sensor is the same as the height of the interface of the delivery pipeline (60) on the body of the water tank (10). When the water level in the water tank (10) is lower than the height of the liquid level sensor, the water pump (70) stops working; when the water level in the water tank (10) is higher than the height of the liquid level sensor, the water pump (70) continues to work.

Images