Chimney condensate water recycling device for gas-fired boiler

Abstract

The utility model relates to the technical field of gas-fired boiler condensate water recovery, in particular to a gas-fired boiler chimney condensate water recycling device which comprises a gas-fired boiler body, and the output end of the gas-fired boiler body is fixedly connected with the input end of a condenser through a pipeline. The input end of the condenser is fixedly connected with the input end of a heat collector through a pipeline, and the air outlet end of the heat collector is fixedly connected with a chimney body. Condensate water collecting pipelines are additionally arranged on the lower portion of the condenser and the lower portion of the heat collector and finally collected to the first-stage condensate water settling pond, impurities in the condensate water are removed through settling and filtering of the first-stage condensate water settling pond, then the condensate water enters the condensate water pond, and the condensate water is collected to the condensate water tank through the vertical drainage pump. The collected flue gas condensate water is acidic and cannot be directly utilized, so that a dosing device is additionally arranged, and the pH value of the condensate water is regulated to meet the water requirement of the two-network system through dosing for supplementing water for the two-network system of the heat exchange station.

Description

Technical Field

[0001] The utility model relates to the technical field of gas boiler condensate recovery, in particular to a gas boiler chimney condensate recovery and utilization device. Background Art

[0002] In recent years, with the continuous improvement of environmental protection awareness and the continuous increase in demand for energy resources, energy conservation and emission reduction have become a global consensus. With the continuous development of clean energy heating methods represented by "coal to gas", the number of boilers fueled by natural gas has gradually increased. Compared with coal burning, the content of sulfur dioxide and nitrogen oxides emitted by burning natural gas is very low, which reduces the pressure on the environment. However, gas boilers will produce a large amount of high-temperature flue gas during operation, which contains a large amount of heat energy and water vapor. The exhaust temperature of most gas hot water boilers is as high as 0℃~200℃ in the condensate collection pipeline (14). If it is directly discharged, it will not only cause energy waste, but also may cause environmental pollution. At the same time, since the main component of natural gas is CH4, the volume fraction of water vapor in the exhaust gas of natural gas boilers can reach 15%~20%. A large amount of water vapor latent heat is wasted with the exhaust of flue gas. A large amount of water vapor in the flue gas is discharged into the atmosphere, which will produce white smoke, and then form pollution and increase the PM2.5 index. Therefore, recycling and utilizing the flue gas condensate of gas boilers is of great significance for improving energy utilization efficiency, reducing energy consumption and protecting the environment.

[0003] The traditional method of collecting flue gas condensate from gas boilers is to install condensate collection pipes at the parts of the boiler flue where condensate is easily generated, and discharge the collected condensate directly into the boiler room ditch through the condensate collection pipes and directly discharge it as industrial wastewater. This traditional discharge method not only causes a large amount of water resource waste, but also causes certain damage to the soil environment (because the flue gas condensate has a certain acidity). Moreover, if the flue gas condensate cannot be discharged in time, it will accumulate in the boiler flue for a long time, which is very likely to cause flue rust and flue gas leakage.

[0004] Therefore, in order to solve the above problems, a gas boiler chimney condensate water recovery and utilization device is proposed. Summary of the invention

[0005] The purpose of the utility model is to provide a gas boiler chimney condensate recovery and utilization device to solve the problem mentioned in the above background technology that the traditional gas boiler flue gas condensate collection method is to install a condensate collection pipe at the part of the boiler flue where condensate is easily generated, and the collected condensate is directly discharged into the boiler room ditch through the condensate collection pipe and directly discharged as industrial wastewater. This traditional discharge method not only causes a large amount of water resource waste but also causes certain damage to the soil environment (because the flue gas condensate has a certain acidity). Moreover, if the flue gas condensate cannot be discharged in time, it will accumulate in the boiler flue for a long time and it is very easy to cause flue rust and flue gas leakage.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas boiler chimney condensate recovery and utilization device, comprising: a gas boiler body, the output end of the gas boiler body is fixedly connected to the input end of the condenser through a pipeline, the input end of the condenser is fixedly connected to the input end of the heat collector through a pipeline, the air outlet end of the heat collector is fixedly connected to the chimney body, and the water outlet end of the heat collector is fixedly connected to the condensate collection pipeline;

[0007] A sedimentation structure is installed on one side of the condensed water collection pipe, and the sedimentation structure includes a primary condensed water sedimentation tank, and a water inlet pipe and a water outlet pipe are arranged on the surface of the primary condensed water sedimentation tank;

[0008] A conveying structure is installed on one side of the precipitation structure, and the conveying structure includes a condensation water pool, the output end of the condensation water pool is fixedly connected to the input end of the vertical drainage pump through a pipeline, the output end of the vertical drainage pump is fixedly connected to the input end of the condensation water tank through a pipeline, the output end of the condensation water tank is fixedly connected to the input end of the condensation water pump through a pipeline, the output end of the condensation water pump is fixedly connected to the input end of the softening water tank through a pipeline, and a dosing device is connected to the pipeline between the condensation water pump and the softening water tank;

[0009] The first-level condensed water sedimentation tank is fixedly connected to the output end of the condensed water collection pipe through an inlet pipe, and the first-level condensed water sedimentation tank is fixedly connected to the input end of the condensed water tank through an outlet pipe.

[0010] Preferably, a top cover is fixed on the top surface of the first-level condensate sedimentation tank by bolts, an installation groove is opened on the inner wall of the outlet pipe, a filter is installed on the inner side of the installation groove, a rotary cylinder is threadedly connected on the inner wall of the installation groove, and a sealing gasket is sleeved on the outer wall of the rotary cylinder.

[0011] Preferably, one end of the rotary drum is exposed from the interior of the mounting groove, and the other end of the rotary drum is in contact with the filter screen.

[0012] Preferably, the sealing gasket is located between the primary condensate sedimentation tank and the rotary drum.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model installs a condensate collection pipe at the bottom of the condenser and the heat collector and finally collects the condensate into a primary condensate sedimentation tank. After the condensate is filtered and impurities in the condensate are removed in the primary condensate sedimentation tank, it enters the condensate tank and is collected into the condensate tank by a vertical drainage pump. Since the collected flue gas condensate is acidic and cannot be used directly, a dosing device is installed to adjust the pH value of the condensate to meet the water requirements of the second network system by adding drugs, and the condensate is used to replenish water for the second network system of the heat exchange station.

[0014] 1. The utility model is provided with a sedimentation structure. By respectively installing condensed water collection pipes at the lower part of the condenser and the heat collector, the condensed water can be collected into the primary condensed water sedimentation tank through the water inlet pipe. After sedimentation and filtration, the condensed water enters the condensed water tank through the water outlet pipe. The filter installed in the water outlet pipe can filter the condensed water to prevent the sediment in the water from entering the condensed water tank. After use, the vertical drainage pump is removed and the rotary drum is unscrewed to release the fixed installation of the filter in the installation groove. The filter can be removed from the installation groove for easy replacement and maintenance;

[0015] 2. The utility model is provided with a conveying structure, and the condensed water in the condensed water pool is discharged into the condensed water tank through a vertical drainage pump, and the condensed water in the condensed water tank is discharged into the softening water tank through a condensed water pump. Since the collected condensed water is acidic, it cannot be used as water replenishment for the secondary network system for heating. The pH value of the recovered condensed water can be monitored in real time through the dosing device, and the amount of dosing can be reasonably controlled to adjust and neutralize the pH of the condensed water. The condensed water neutralized to the qualified level by adding dosing is used for water replenishment of the secondary network for heating. The device can deeply collect flue gas condensed water to reduce the amount of water replenishment for the secondary network and further save water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the side cross-section of the structure of the precipitation structure of the utility model;

[0018] Figure 3 It is a schematic diagram showing the explosion of the side cross-sectional structure of the precipitation structure of the utility model.

[0019] In the figure: 1. Gas boiler body; 11. Condenser; 12. Heat collector; 13. Chimney body; 14. Condensate collection pipe; 2. Sedimentation structure; 21. Primary condensate sedimentation tank; 22. Top cover; 23. Water inlet pipe; 24. Water outlet pipe; 25. Installation trough; 26. Filter; 27. Rotor; 28. Sealing gasket; 3. Conveying structure; 31. Condensate tank; 32. Vertical drainage pump; 33. Condensate tank; 34. Condensate pump; 35. Softening water tank; 36. Dosing device. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3, an embodiment provided by the utility model:

[0022] The gas boiler body 1, condenser 11, heat collector 12, vertical drainage pump 32, condensate pump 34 and dosing device 36 used in this application are products that can be directly purchased on the market. Their principles and connection methods are existing technologies well known to technicians in this field, so they will not be repeated here.

[0023] A gas boiler chimney condensate recycling device comprises: a gas boiler body 1, the output end of the gas boiler body 1 is fixedly connected to the input end of a condenser 11 through a pipeline, the input end of the condenser 11 is fixedly connected to the input end of a heat collector 12 through a pipeline, the air outlet end of the heat collector 12 is fixedly connected to a chimney body 13, and the water outlet end of the heat collector 12 is fixedly connected to a condensate collection pipeline 14;

[0024] A sedimentation structure 2 is installed on one side of the condensed water collection pipe 14. The sedimentation structure 2 includes a primary condensed water sedimentation tank 21. A water inlet pipe 23 and a water outlet pipe 24 are arranged on the surface of the primary condensed water sedimentation tank 21.

[0025] A conveying structure 3 is installed on one side of the sedimentation structure 2. The conveying structure 3 includes a condensation water pool 31. The output end of the condensation water pool 31 is fixedly connected to the input end of a vertical drainage pump 32 through a pipeline. The output end of the vertical drainage pump 32 is fixedly connected to the input end of a condensation water tank 33 through a pipeline. The output end of the condensation water tank 33 is fixedly connected to the input end of a condensation water pump 34 through a pipeline. The output end of the condensation water pump 34 is fixedly connected to the input end of a softened water tank 35 through a pipeline. A dosing device 36 is connected to the pipeline between the condensation water pump 34 and the softened water tank 35.

[0026] The first-level condensate sedimentation tank 21 is fixedly connected to the output end of the condensate collection pipe 14 through the water inlet pipe 23, and the first-level condensate sedimentation tank 21 is fixedly connected to the input end of the condensate tank 31 through the water outlet pipe 24. The utility model installs a condensate collection pipe 14 at the lower part of the condenser 11 and the heat collector 12 and finally collects the condensate into the first-level condensate sedimentation tank 21. After the impurities in the condensate are removed by sedimentation and filtration in the first-level condensate sedimentation tank 21, it enters the condensate tank 31 and is collected by a vertical drainage pump 32 to the condensate tank 33. Since the collected flue gas condensate is acidic and cannot be directly used, a dosing device 36 is installed to adjust the pH value of the condensate to meet the water requirements of the second network system by adding drugs, and it is used for water replenishment of the second network system of the heat exchange station.

[0027] Furthermore, a top cover 22 is fixedly installed on the top surface of the first-level condensate sedimentation tank 21 by bolts, a mounting groove 25 is opened on the inner wall of the outlet pipe 24, a filter screen 26 is installed on the inner side of the mounting groove 25, a rotary drum 27 is threadedly connected to the inner wall of the mounting groove 25, and a sealing gasket 28 is sleeved on the outer wall of the rotary drum 27. The filter screen 26 installed in the outlet pipe 24 can filter the condensate to prevent the sediment in the water from entering the condensate water tank 31. After use, the vertical drainage pump 32 is removed, and the rotary drum 27 is unscrewed to release the fixed installation of the filter screen 26 in the mounting groove 25, and the filter screen 26 can be removed from the mounting groove 25 for easy replacement and maintenance.

[0028] Furthermore, one end of the rotary cylinder 27 is exposed from the interior of the installation groove 25 , and the other end of the rotary cylinder 27 is in contact with the filter screen 26 , so that the filter screen 26 can be fixed to the inner side of the installation groove 25 through the rotary cylinder 27 .

[0029] Furthermore, the sealing gasket 28 is located between the primary condensed water sedimentation tank 21 and the rotary drum 27 . The provision of the sealing gasket 28 can ensure the sealing between the rotary drum 27 and the primary condensed water sedimentation tank 21 .

[0030] Working principle: by installing condensate collection pipes 14 at the condenser 11 and the heat collector 12 at this position, a large amount of condensate is generated due to the temperature drop of the flue gas after heat exchange, the condensate can be collected into the primary condensate sedimentation tank 21 through the water inlet pipe 23, and the condensate enters the condensate tank 31 through the water outlet pipe 24 after sedimentation and filtration. The filter 26 installed in the water outlet pipe 24 can filter the condensate to prevent the sediment in the water from entering the condensate tank 31. After use, the vertical drainage pump 32 is removed, and the drum 27 is unscrewed to release the fixed installation of the filter 26 in the installation groove 25, and the filter 26 can be removed from the installation groove 25 for easy replacement and maintenance;

[0031] The condensed water in the condensed water pool 31 is discharged into the condensed water tank 33 through the vertical drainage pump 32, and the condensed water in the condensed water tank 33 is discharged into the softening water tank 35 through the condensed water pump 34. Since the collected condensed water is acidic, it cannot be used as water replenishment for the secondary network system for heating. The dosing device 36 can monitor the pH value of the recovered condensed water in real time, and the amount of dosing can be reasonably controlled to adjust and neutralize the pH of the condensed water. The condensed water that is neutralized to qualified level by dosing is used for water replenishment of the secondary network for heating. The device can deeply collect flue gas condensed water to reduce the amount of water replenishment for the secondary network and further save water resources.

[0032] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A gas boiler chimney condensate water recovery and utilization device, comprising: A gas boiler body (1), wherein the output end of the gas boiler body (1) is fixedly connected to the input end of a condenser (11) via a pipeline, the input end of the condenser (11) is fixedly connected to the input end of a heat collector (12) via a pipeline, the gas outlet end of the heat collector (12) is fixedly connected to a chimney body (13), and the water outlet end of the heat collector (12) is fixedly connected to a condensate collection pipeline (14); Features: A sedimentation structure (2) is installed on one side of the condensed water collection pipe (14), the sedimentation structure (2) comprising a primary condensed water sedimentation tank (21), and a water inlet pipe (23) and a water outlet pipe (24) are arranged on the surface of the primary condensed water sedimentation tank (21); A conveying structure (3) is installed on one side of the precipitation structure (2), and the conveying structure (3) comprises a condensation water pool (31), the output end of the condensation water pool (31) is fixedly connected to the input end of a vertical drainage pump (32) through a pipeline, the output end of the vertical drainage pump (32) is fixedly connected to the input end of a condensation water tank (33) through a pipeline, the output end of the condensation water tank (33) is fixedly connected to the input end of a condensation water pump (34) through a pipeline, the output end of the condensation water pump (34) is fixedly connected to the input end of a softening water tank (35) through a pipeline, and a dosing device (36) is connected to the pipeline between the condensation water pump (34) and the softening water tank (35); The first-level condensed water sedimentation tank (21) is fixedly connected to the output end of the condensed water collection pipe (14) via a water inlet pipe (23), and the first-level condensed water sedimentation tank (21) is fixedly connected to the input end of the condensed water tank (31) via a water outlet pipe (24).

2. A gas boiler chimney condensate recycling device according to claim 1, characterized in that: A top cover (22) is fixedly mounted on the top surface of the primary condensate sedimentation tank (21) by means of bolts, a mounting groove (25) is provided on the inner wall of the water outlet pipe (24), a filter screen (26) is installed on the inner side of the mounting groove (25), a rotary cylinder (27) is threadedly connected to the inner wall of the mounting groove (25), and a sealing gasket (28) is sleeved on the outer wall of the rotary cylinder (27).

3. A gas boiler chimney condensate recycling device according to claim 2, characterized in that: One end of the rotary cylinder (27) is exposed from the interior of the mounting groove (25), and the other end of the rotary cylinder (27) is in contact with the filter screen (26).

4. A gas boiler chimney condensate recycling device according to claim 2, characterized in that: The sealing gasket (28) is located between the primary condensate sedimentation tank (21) and the rotary drum (27).

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