Condenser with flue gas filtering function for boiler

Abstract

The boiler condenser with the smoke filtering function comprises a bottom plate, a condensation mechanism is arranged at the top end of the bottom plate, the condensation mechanism comprises a heat preservation shell arranged at the top end of the bottom plate, an L-shaped connecting pipe connected with a condensate pump is arranged on one side of the top end of the heat preservation shell in a penetrating mode, and an air inlet pipe is arranged at one end of the condensation mechanism. A condensate pump is arranged on one side of the top end of the filtering mechanism, a water inlet pipe is arranged on one side of the condensate pump, and a water outlet pipe is arranged on the other side of the top end of the filtering mechanism. The flue gas purification device is scientific and novel in structure, and can effectively reduce the adverse effect of a boiler system on the environment by purifying flue gas, filtering particulate matters and improving the emission efficiency; meanwhile, water vapor in the flue gas is cooled and condensed, the temperature of the flue gas is reduced, emission to the environment is reduced, and the effective energy utilization rate of the boiler system is increased.

Description

Technical Field

[0001] This utility model relates to the field of condenser technology and equipment, specifically to a boiler condenser with flue gas filtration function. Background Technology

[0002] As an important component of boiler systems, boiler condensers are mainly used in the combustion process of energy sources such as coal, oil, and natural gas. Traditional boilers produce a large amount of flue gas during combustion, which contains underutilized heat energy and harmful substances. To improve energy efficiency and reduce emissions, boiler condensers have emerged. However, traditional boiler condensers have certain drawbacks in flue gas treatment, mainly in the lack of flue gas filtration. The flue gas produced during combustion contains harmful substances such as solid particles and sulfur dioxide. Without effective filtration measures, these substances will be directly emitted into the atmosphere, posing a potential threat to the environment and human health. Therefore, the single function of traditional condensers limits their effectiveness in comprehensive environmental protection.

[0003] To address the aforementioned issues, boiler condensers with flue gas filtration capabilities have emerged. This advanced equipment improves upon traditional condensers by incorporating key components such as flue gas filters. Its basic structure includes a heat exchanger, a condenser, and a flue gas filter. The heat exchanger transfers heat energy from the flue gas to the working medium, while the condenser uses condensation technology to condense water vapor into liquid, achieving the filtration and recovery of solid particles and harmful substances. This type of boiler condenser with flue gas filtration not only improves energy efficiency but also reduces adverse environmental impacts.

[0004] For example, Chinese patent CN213455005U discloses a deep recovery condenser for boiler flue gas, including a condenser shell. A baffle is fixed to the inner wall of the air inlet end of the condenser shell, and an installation port is opened at the bottom of the baffle. A filter cloth is fixed to the inner wall of the installation port. Three first inclined plates are sequentially fixed to the bottom inner wall of the condenser shell on one side of the filter cloth. This can improve flue gas condensation efficiency and prevent smoke and dust pollution of the environment. However, the above-mentioned deep recovery condenser for boiler flue gas has the following shortcomings in practical applications: First, the device uses a long and tortuous spiral metal tube for heat exchange. Due to the long pipe, the heat exchange efficiency may be low, and the heat energy in the flue gas cannot be fully utilized. Relying solely on the metal tube for heat transfer results in poor recovery of the latent heat of the flue gas. Simultaneously, the use of a specially shaped metal tube for heat exchange may lead to relatively high manufacturing costs, complex and difficult installation, and the need to replace the entire condenser in case of failure, increasing maintenance costs and repair difficulty.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes a boiler condenser with flue gas filtration function to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] Therefore, the specific technical solution adopted by this utility model is as follows:

[0008] A boiler condenser with flue gas filtration function includes a base plate, a condensing mechanism at the top of the base plate, an air inlet pipe at one end of the condensing mechanism, a filtration mechanism at the other end of the condensing mechanism, a condensate pump at one side of the top of the filtration mechanism, a water inlet pipe at one side of the condensate pump, and a water outlet pipe at the other side of the top of the filtration mechanism.

[0009] Furthermore, in order to achieve cooling and condensation of the flue gas, settle the moisture and particulate matter in the flue gas, and improve condensation efficiency, the condensation mechanism includes an insulation shell set at the top of the base plate. An L-shaped connecting pipe connected to the condensate pump is installed through one side of the top of the insulation shell. An air inlet hole matching the air inlet pipe is opened at one end of the insulation shell. A condensation inner tube connected to the air inlet pipe is set inside the insulation shell. A cylindrical filter shell is set inside the condensation inner tube. Several filter holes are opened on the outer side of the cylindrical filter shell. The inner diameter of one end of the condensation inner tube gradually increases from the outside to the inside. The other end of the condensation inner tube passes through the insulation shell and is connected to the filter mechanism. A condensation outer tube is set outside the condensation inner tube, and the condensation outer tube is spirally wound around the outside of the condensation inner tube. One end of the condensation outer tube is connected to the L-shaped connecting pipe, and the other end of the condensation outer tube is connected to the water outlet pipe.

[0010] Furthermore, in order to achieve multi-level filtration and purification of flue gas, improve the emission efficiency of filtered flue gas, and ensure that the emitted flue gas is cleaner, the filtration mechanism includes a mounting shell located at one end of the condensing mechanism. A cover plate is provided on one side of the mounting shell, and a filter seat connected to the condensing mechanism is provided on the other side of the mounting shell. A microporous filter cloth is provided on the inner side of one end of the filter seat. A U-shaped tube is provided through the mounting shell on one side of the microporous filter cloth. An annular pipe network is provided at one end of the U-shaped tube. Several nozzles are provided at the bottom end of the annular pipe network. A connecting branch pipe connected to the condensing mechanism is provided at the other end of the U-shaped tube. A valve is provided in the middle of the connecting branch pipe. An exhaust pipe is provided at the top of the mounting shell. An exhaust fan is provided at the top of the exhaust pipe. An exhaust fan is provided at the top of the exhaust fan.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. This utility model has a scientific and novel structure, which can effectively reduce the adverse environmental impact of the boiler system and improve energy utilization efficiency by purifying flue gas, filtering particulate matter, and improving emission efficiency. At the same time, it cools and condenses the water vapor in the flue gas, turning the water vapor into liquid water, reducing the temperature of the flue gas, reducing emissions to the environment, and improving the energy efficiency of the boiler system. In addition, by cooling the flue gas and recovering the latent heat in the flue gas using cooling water, the environmental performance of the boiler can be improved, heat energy waste can be reduced, thereby improving the energy utilization efficiency of the boiler system.

[0013] 2. By setting up a condensation mechanism, the condensation and moisture recovery of flue gas are realized. The cooling water absorbs the heat in the flue gas, condensing the water vapor in the flue gas into small droplets. The heat insulation shell reduces the heat loss after the cooling water recovers the latent heat in the flue gas. At the same time, the alkaline packing in the columnar filter shell carries out a neutralization reaction to remove carbon dioxide and sulfur dioxide from the flue gas, thereby achieving flue gas filtration.

[0014] 3. By setting up a filtration mechanism, the quality of flue gas is improved through multi-level filtration and treatment. The exhaust fan and exhaust blower improve the emission efficiency of the treated flue gas, thereby improving the environmental performance of the boiler condenser. At the same time, the cooling water sprayed into the flue gas through the ring network and nozzles helps particulate matter settle, more thoroughly cleans impurities in the flue gas, and improves the purity of the emitted flue gas. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a boiler condenser with flue gas filtration function according to an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the structure of a boiler condenser with flue gas filtration function according to an embodiment of the present utility model from another angle;

[0018] Figure 3 This is a partial structural schematic diagram of a boiler condenser with flue gas filtration function according to an embodiment of the present utility model;

[0019] Figure 4 This is a partial structural diagram of a boiler condenser with flue gas filtration function according to an embodiment of the present utility model from another angle.

[0020] Figure 5 yes Figure 2 A magnified view of a section at point A in the middle;

[0021] Figure 6 yes Figure 4 A magnified view of a section at point B.

[0022] In the picture:

[0023] 1. Base plate; 2. Condensation mechanism; 201. Insulation shell; 202. L-shaped connecting pipe; 203. Air inlet; 204. Inner condenser pipe; 205. Columnar filter shell; 206. Filter hole; 207. Outer condenser pipe; 3. Air inlet pipe; 4. Filtration mechanism; 401. Mounting shell; 402. Cover plate; 403. Filter base; 404. Microporous filter cloth; 405. U-shaped pipe; 406. Annular pipe network; 407. Nozzle; 408. Connecting branch pipe; 409. Valve; 410. Air outlet pipe; 411. Smoke exhaust fan; 412. Smoke exhaust fan; 5. Condensate pump; 6. Water inlet pipe; 7. Water outlet pipe. Detailed Implementation

[0024] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0025] According to an embodiment of the present invention, a boiler condenser with flue gas filtration function is provided.

[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-6 As shown, the boiler condenser with flue gas filtration function according to the embodiment of the present utility model includes a base plate 1, a condensing mechanism 2 is provided at the top of the base plate 1, an air inlet pipe 3 is provided at one end of the condensing mechanism 2, a filtering mechanism 4 is provided at the other end of the condensing mechanism 2, a condensate pump 5 is provided on one side of the top of the filtering mechanism 4, a water inlet pipe 6 is provided on one side of the condensate pump 5, and a water outlet pipe 7 is provided on the other side of the top of the filtering mechanism 4.

[0027] With the help of the above-mentioned technical solution of this utility model, the structure of this utility model is scientific and novel. It can effectively reduce the adverse environmental impact of the boiler system and improve energy utilization efficiency by purifying flue gas, filtering particulate matter, and improving emission efficiency. At the same time, it cools and condenses the water vapor in the flue gas, turning the water vapor into liquid water, reducing the temperature of the flue gas, reducing emissions to the environment, and improving the energy efficiency of the boiler system. In addition, by cooling the flue gas and using cooling water to recover the latent heat in the flue gas, the environmental performance of the boiler can be improved, heat energy waste can be reduced, thereby improving the energy utilization efficiency of the boiler system.

[0028] In one embodiment, the condensing mechanism 2 includes an insulation shell 201 disposed at the top of the base plate 1. An L-shaped connecting pipe 202 connected to the condensate pump 5 is provided through one side of the top of the insulation shell 201. An air inlet 203 that cooperates with the air inlet pipe 3 is provided at one end of the insulation shell 201. A condensing inner pipe 204 connected to the air inlet pipe 3 is provided inside the insulation shell 201. A cylindrical filter shell 205 is provided inside the condensing inner pipe 204 (in addition, in specific applications, alkaline filler is provided inside the cylindrical filter shell 205; in this example, activated carbon soaked in lime water is used). A plurality of filter holes 206 are provided on the outer side of the cylindrical filter shell 205. The inner diameter of one end of the condenser inner tube 204 gradually increases from the outside to the inside. The other end of the condenser inner tube 204 passes through the insulation shell 201 and is connected to the filter mechanism 4. A condenser outer tube 207 is provided on the outside of the condenser inner tube 204 (in addition, in specific applications, heat insulation felt is filled between the insulation shell 201 and the condenser outer tube 207; in this example, glass fiber is used). The condenser outer tube 207 is spirally wound around the outside of the condenser inner tube 204. One end of the condenser outer tube 207 is connected to the L-shaped connecting pipe 202, and the other end of the condenser outer tube 207 is connected to the water outlet pipe 7, thereby realizing the cooling and condensation of the flue gas, settling the moisture and particulate matter in the flue gas, and improving the condensation efficiency.

[0029] The working principle of the condensation mechanism 2 is as follows: First, the L-shaped connecting pipe 202 pumps cooling water into the condenser outer pipe 207 through the condenser pump 5. Then, under the action of the condenser outer pipe 207, the cooling water flows in a spiral shape through the outside of the condenser inner pipe 204 and comes into full contact with the condenser inner pipe 204. When the flue gas passes through the condenser inner pipe 204, the cooling water absorbs the heat in the flue gas through the pipe wall, causing the water vapor in the flue gas to condense into small droplets, which are then carried by the flue gas along the condenser inner pipe 204 to the filter mechanism 4. At the same time, the heat insulation shell 201 ensures that the cooling water absorbs the latent heat in the flue gas. In addition, when the flue gas passes through the filter hole 206, the alkaline packing material filled in the cylindrical filter shell 205 can remove carbon dioxide and sulfur dioxide in the flue gas. Through the neutralization reaction that occurs in the porous structure of the alkaline packing material, the flue gas is filtered, making the emitted flue gas more environmentally friendly.

[0030] In one embodiment, the filter mechanism 4 includes a mounting shell 401 disposed at one end of the condensing mechanism 2 (in addition, in specific applications, a drain outlet is provided at the bottom of the mounting shell 401). A cover plate 402 is provided on one side of the mounting shell 401, and a filter seat 403 connected to the condensing mechanism 2 is provided on the other side of the mounting shell 401. A microporous filter cloth 404 is disposed on the inner side of one end of the filter seat 403. A U-shaped tube 405 is provided through the mounting shell 401 on one side of the microporous filter cloth 404, and a ring is provided at one end of the U-shaped tube 405. The U-shaped pipe network 406 has several nozzles 407 at its bottom end. The other end of the U-shaped pipe 405 is connected to a connecting branch pipe 408 that is connected to the condensation mechanism 2. A valve 409 is installed in the middle of the connecting branch pipe 408. An exhaust pipe 410 is installed at the top of the mounting shell 401. An exhaust fan 411 is installed at the top of the exhaust pipe 410. An exhaust fan 412 is installed at the top of the exhaust fan 411. This achieves multi-level filtration and purification of the flue gas, improves the emission efficiency of the filtered flue gas, and ensures that the emitted flue gas is cleaner.

[0031] The working principle of the filter mechanism 4 is as follows: First, the microporous filter cloth 404 can effectively filter particulate matter in the flue gas. Then, through the U-shaped pipe 405 and the annular pipe network 406, cooling water is sprayed onto the filtered flue gas through the nozzle 407, which can more thoroughly clean the impurities in the flue gas and improve the purification effect of the flue gas. The water mist sprayed by the nozzle 407 helps the particulate matter in the flue gas to settle and improve the purity of the flue gas. The condensate flowing out of the condensation mechanism 2 flows along the bottom of the mounting shell 401 through the filter seat 403. After mixing with the cooling water sprayed by the nozzle 407, it is finally discharged from the drain port at the bottom of the mounting shell 401. At the same time, the exhaust fan 411 and the exhaust blower 412 help guide the flue gas flow to the exhaust pipe 410, reduce the temperature of the flue gas, and reduce direct emissions to the environment.

[0032] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0033] In practical application, firstly, the high-temperature flue gas generated by the boiler is introduced into the condensing mechanism 2 through the inlet pipe 3. Then, the condensate pump 5 is started to pump the cooling water introduced through the inlet pipe 6 into the condensing mechanism 2. The high-temperature flue gas is condensed and filtered through the condensing mechanism 2 (the working principle of the condensing mechanism 2 is as described above). The cooling water absorbs the heat in the flue gas, which lowers the flue gas temperature and condenses the water vapor into liquid water. Subsequently, the cooling water is recycled back to the boiler system through the outlet pipe 7 to complete the next round of cooling process. The treated high-temperature flue gas and condensate are introduced into the filtration mechanism 4 for further filtration and treatment (the working principle of the filtration mechanism 4 is as described above). Finally, the condensate is discharged from the bottom of the filtration mechanism 4, and the treated flue gas is discharged from the top of the filtration mechanism 4, thus completing the condensation treatment of the boiler flue gas.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", 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 connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A boiler condenser with a flue gas filtering function, comprising a bottom plate (1), characterized in that: A condensing mechanism (2) is provided at the top of the base plate (1), an air inlet pipe (3) is provided at one end of the condensing mechanism (2), a filtering mechanism (4) is provided at the other end of the condensing mechanism (2), a condensing water pump (5) is provided on one side of the top of the filtering mechanism (4), a water inlet pipe (6) is provided on one side of the condensing water pump (5), and a water outlet pipe (7) is provided on the other side of the top of the filtering mechanism (4).

2. A boiler condenser with flue gas filtering function according to claim 1, characterized in that: The condensing mechanism (2) comprises a heat-insulating shell (201) arranged at the top of the base plate (1); an L-shaped connecting pipe (202) connected to the condensing water pump (5) is provided through one side of the top of the heat-insulating shell (201); an air inlet hole (203) matching with the air inlet pipe (3) is provided at one end of the heat-insulating shell (201); and a condensing inner tube (204) connected to the air inlet pipe (3) is provided on the inner side of the heat-insulating shell (201).

3. The boiler condenser with flue gas filtering function according to claim 2, characterized in that: A cylindrical filter shell (205) is arranged on the inner side of the condensing inner tube (204), and a plurality of filter holes (206) are opened on the outer side of the cylindrical filter shell (205). The inner diameter of one end of the condensing inner tube (204) gradually increases from the outside to the inside, and the other end of the condensing inner tube (204) passes through the insulation shell (201) and is connected to the filter mechanism (4).

4. The boiler condenser with flue gas filtering function according to claim 3, characterized in that: An outer condensation tube (207) is arranged on the outer side of the inner condensation tube (204), and the outer condensation tube (207) is spirally wound on the outer side of the inner condensation tube (204), one end of the outer condensation tube (207) is connected to the L-shaped connecting tube (202), and the other end of the outer condensation tube (207) is connected to the water outlet pipe (7).

5. The boiler condenser with flue gas filtering function according to claim 1, characterized in that: The filtering mechanism (4) comprises a mounting shell (401) arranged at one end of the condensing mechanism (2), a cover plate (402) being arranged on one side of the mounting shell (401), a filtering seat (403) connected to the condensing mechanism (2) being arranged on the other side of the mounting shell (401), and a microporous filter cloth (404) being arranged on the inner side of one end of the filtering seat (403).

6. The boiler condenser with flue gas filtering function according to claim 5, characterized in that: A U-shaped tube (405) is provided on one side of the microporous filter cloth (404) and passes through the mounting shell (401); an annular pipe network (406) is provided at one end of the U-shaped tube (405); a plurality of nozzles (407) are provided at the bottom end of the annular pipe network (406); a connecting branch pipe (408) connected to the condensing mechanism (2) is provided at the other end of the U-shaped tube (405); a valve (409) is provided in the middle of the connecting branch pipe (408).

7. The boiler condenser with flue gas filtering function according to claim 6, characterized in that: An air outlet pipe (410) is arranged at the top of the installation shell (401), a smoke exhaust fan (411) is arranged at the top of the air outlet pipe (410), and a smoke exhaust blower (412) is arranged at the top of the smoke exhaust fan (411).

Images