A boiler tail gas waste heat recovery and waste gas treatment device
By setting up a combination of devices such as a scrubbing tank, atomizing nozzles, mesh packing, and induced draft fan, the problems of excessive exhaust emissions and unrecovered waste heat in traditional natural gas boilers have been solved, achieving efficient pollutant treatment and waste heat recovery, and improving boiler operating efficiency and economic benefits.
Patent Information
- Application Number
- CN202423241342.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Traditional natural gas boilers suffer from problems such as excessive exhaust emissions, incomplete combustion, and failure to recover waste heat from exhaust gases, leading to pollution and energy waste, and affecting boiler operating efficiency and economic benefits.
The device employs a combination of a washing tank, atomizing nozzles, mesh filler, induced draft fan, and waste heat recovery pipeline to treat boiler exhaust gas through spray washing and waste heat recovery, thereby increasing the intake of combustion air and recovering the heat energy of high-temperature exhaust gas.
It effectively reduces exhaust gas pollutant emissions, improves combustion efficiency, realizes exhaust gas waste heat recovery, and reduces enterprise operating costs and environmental pollution.
Smart Images
Figure CN223610149U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to waste gas treatment technical field, concretely related to a boiler tail gas waste heat recovery and waste gas treatment device. BACKGROUND
[0002] With the growth of industrial production and life energy consumption, natural gas boilers are widely used in various heating and production processes due to their high efficiency and cleanliness. However, traditional natural gas boilers still have many problems in actual operation, especially in the tail gas emission link, which seriously affects the operation efficiency and environmental protection effect of the boiler, and the specific performance is as follows:
[0003] 1. Tail gas emission exceeds the standard: due to the factors such as inaccurate control of combustion conditions, insufficient performance of the burner and equipment aging, the content of pollutants in the combustion products of traditional natural gas boilers is high during the combustion process, which leads to tail gas emission exceeding the standard and cannot meet the increasingly strict environmental emission standards. This not only pollutes the surrounding environment, but also increases the pressure of environmental improvement of enterprises, which may cause economic losses.
[0004] Insufficient combustion, increased energy consumption of natural gas: the combustion control precision of traditional boiler combustion system is not high, and the ratio of air to natural gas during combustion may not be accurate, which leads to insufficient combustion. On the one hand, this makes the boiler unable to fully release the calorific value of natural gas, resulting in energy waste; on the other hand, the hydrocarbons not fully combusted are discharged with the tail gas, which not only reduces the overall thermal efficiency of the boiler, but also further aggravates the tail gas pollution emission. In addition, with the rise of energy prices, the high energy consumption problem caused by insufficient combustion increases the operating cost of enterprises and affects their economic benefits.
[0005] Excessive temperature of tail gas emission: during the operation of traditional natural gas boilers, the tail gas is usually directly discharged without effective waste heat recovery. The high-temperature flue gas generated during the combustion process of the boiler carries a large amount of heat energy, which will be directly dissipated into the atmosphere if not recycled, resulting in serious waste of energy. At the same time, the direct emission of high-temperature tail gas not only affects the thermal efficiency of the boiler, but also may cause thermal pollution to the emission system and the surrounding environment, further reducing the energy saving and environmental protection performance of the overall system.
[0006] In view of the problems in the related art, no effective solution has been proposed so far. SUMMARY
[0007] In view of the problems in the related art, the utility model provides a boiler tail gas waste heat recovery and waste gas treatment device to overcome the above technical problems existing in the prior art.
[0008] Therefore, the utility model adopts the specific technical scheme as follows:
[0009] The utility model provides a kind of boiler exhaust waste heat recovery and exhaust treatment device, including several boilers, the side of boiler is equipped with the exhaust duct matched with it, the top end of exhaust duct is connected with the bottom end of washing tank;The inner top of washing tank is provided with spray pipe, one end of spray pipe is provided with atomizing nozzle matched with it, the other end of spray pipe penetrates washing tank and is connected with liquid supply pipe located outside washing tank, the other end of liquid supply pipe is connected with liquid supply tank;The top of washing tank is provided with connecting pipeline, the other end of connecting pipeline is connected with induced draft fan, the top of induced draft fan is connected with exhaust duct, the bottom end of exhaust duct is connected with waste heat recovery pipeline on one side, and the other end of waste heat recovery pipeline is connected with several boilers respectively.
[0010] Further, in order to better realize the waste heat recovery and exhaust treatment of the boiler, the bottom of the washing tank is provided with a liquid discharge pipe, and the end of the liquid discharge pipe close to the washing tank is provided with a control valve. The boiler is installed in a first workshop, the washing tank and the liquid supply tank are installed in a second workshop, and the first workshop is located directly below the second workshop. The inner bottom of the washing tank is provided with a mesh filler, and the mesh filler is located above the exhaust duct. The bottom of the exhaust duct and above the waste heat recovery pipeline is provided with a detection hole. The induced draft fan is installed on the ground of the second workshop through a fixing seat.
[0011] The utility model has the advantages that:
[0012] 1) The utility model discloses a washing tank, an atomizing nozzle and a mesh filler are arranged, so that the pollutants in the boiler exhaust can be treated under the action of the washing tank and the atomizing nozzle, and the contact area between the exhaust and the liquid medicine can be increased under the action of the mesh filler, so that the exhaust can fully react with the liquid medicine, and the effect of treating the exhaust is achieved effectively.
[0013] 2) The utility model discloses an induced draft fan and a waste heat recovery pipeline are arranged, so that the air intake can be increased under the action of the induced draft fan, sufficient combustion is ensured, the emission of pollutants in the exhaust is effectively reduced, and the high-temperature exhaust can be recovered and treated under the action of the waste heat recovery pipeline. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.
[0015] Fig. 1 It is a structure schematic view of a kind of boiler exhaust waste heat recovery and exhaust treatment device according to the utility model embodiment;
[0016] Fig. 2 It is a side view of a boiler tail gas waste heat recovery and waste gas treatment device according to an embodiment of the present application.
[0017] In the figure,
[0018] 1, boiler; 2, waste gas pipeline; 3, scrubbing tank; 4, spray pipe; 5, atomizing nozzle; 6, liquid supply pipe; 7, liquid supply tank; 8, connecting pipeline; 9, induced draft fan; 10, smoke exhaust pipeline; 11, waste heat recovery pipeline; 12, liquid discharge pipe; 13, first workshop; 14, second workshop; 15, net-shaped filler; 16, detection hole; 17, fixing seat. DETAILED DESCRIPTION
[0019] To further illustrate the embodiments, the present application provides drawings, which are part of the disclosure of the present application, mainly used to illustrate the embodiments, and can be used to explain the operating principle of the embodiments in conjunction with the related description of the specification. With reference to these contents, those skilled in the art should be able to understand other possible embodiments and advantages of the present application. The components in the figure are not drawn to scale, and similar component symbols are usually used to represent similar components.
[0020] According to an embodiment of the present application, a boiler tail gas waste heat recovery and waste gas treatment device is provided.
[0021] The present application will be further described in conjunction with the drawings and specific embodiments, as shown in Figs. 1-2 The boiler tail gas waste heat recovery and waste gas treatment device according to the embodiment of the present application includes a plurality of boilers 1, each of which is provided with a waste gas pipeline 2 matched therewith, and the top end of the waste gas pipeline 2 is connected with the bottom end of a scrubbing tank 3. The inner top of the scrubbing tank 3 is provided with a spray pipe 4, one end of which is provided with an atomizing nozzle 5 matched therewith, and the other end of the spray pipe 4 penetrates through the scrubbing tank 3 and is connected with a liquid supply pipe 6 located outside the scrubbing tank 3, and the other end of the liquid supply pipe 6 is connected with a liquid supply tank 7. The top end of the scrubbing tank 3 is provided with a connecting pipeline 8, the other end of which is connected with an induced draft fan 9, and the top end of the induced draft fan 9 is connected with a smoke exhaust pipeline 10, and the bottom end of the smoke exhaust pipeline 10 is connected with a waste heat recovery pipeline 11 on one side, and the other end of the waste heat recovery pipeline 11 is connected with the plurality of boilers 1 respectively. In specific applications, a waste heat recovery pipeline 11 about one meter long is installed at the inlet of the smoke exhaust pipeline 10, which is used to pump the recovered hot water into the boiler 1 for use.
[0022] By means of the above technical scheme of the present application, the present application can not only effectively treat the boiler tail gas, but also recover the waste heat in the tail gas, and effectively reduce the emission of pollutants in the tail gas.
[0023] In one embodiment, the bottom side of the washing tank 3 is provided with a liquid discharge pipe 12, and the control valve is arranged at one end of the liquid discharge pipe 12 close to the washing tank 3. In specific applications, the other end of the liquid discharge pipe 12 is connected with the circulating pool. The boiler 1 is installed in the first workshop 13, and the washing tank 3 and the liquid supply tank 7 are installed in the second workshop 14, and the first workshop 13 is located directly below the second workshop 14. The inner bottom of the washing tank 3 is provided with a mesh filler 15, and the mesh filler 15 is located above the exhaust gas pipeline 2. The bottom side of the exhaust gas pipeline 10 and above the waste heat recovery pipeline 11 is provided with a detection hole 16, so as to facilitate the detection of the exhaust gas pipeline 10. In one embodiment, the induced draft fan 9 is installed on the ground of the second workshop 14 through a fixing seat 17.
[0024] In summary, by means of the above technical scheme of the utility model, the utility model is provided with the washing tank 3, the atomizing nozzle 5 and the mesh filler 15, so that not only the pollutants in the boiler exhaust gas can be treated under the action of the washing tank 3 and the atomizing nozzle 5, but also the contact area with the tail gas can be increased under the action of the mesh filler 15, so that the tail gas can fully react with the liquid medicine, and the effect of treating the tail gas is effectively achieved.
[0025] In addition, the utility model is provided with the induced draft fan 9 and the waste heat recovery pipeline 11, so that not only the air intake can be increased under the action of the induced draft fan 9, the sufficient combustion is ensured, and the pollutant emission of the tail gas is effectively reduced, but also the high-temperature tail gas can be recycled and treated under the action of the waste heat recovery pipeline 11.
[0026] In the utility model, unless otherwise specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screw connection" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between two elements or the interaction relationship between two elements, unless otherwise specified, the above-mentioned terms in the utility model can be understood according to the specific meaning of the above-mentioned terms in the utility model by the person skilled in the art.
[0027] The above-mentioned is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A boiler exhaust gas waste heat recovery and exhaust gas treatment device, characterized by, Including several boilers (1), one side of the boiler (1) is provided with the waste gas pipeline (2) matched with it, the top end of the waste gas pipeline (2) is connected with the bottom end of the washing tank (3); The inner top of the washing tank (3) is provided with the spray pipe (4), one end of the spray pipe (4) is provided with the atomizing nozzle (5) matched with it, the other end of the spray pipe (4) penetrates the washing tank (3) and is connected with the liquid supply pipe (6) located outside the washing tank (3), the other end of the liquid supply pipe (6) is connected with the liquid supply tank (7); The top end of the washing tank (3) is provided with the connecting pipeline (8), the other end of the connecting pipeline (8) is connected with the induced draft fan (9), the top end of the induced draft fan (9) is connected with the smoke exhaust pipeline (10), one side of the bottom end of the smoke exhaust pipeline (10) is connected with the waste heat recovery pipeline (11), and the other end of the waste heat recovery pipeline (11) is connected with the several boilers (1) respectively.
2. A boiler flue gas waste heat recovery and exhaust gas treatment device according to claim 1, characterized in that, One side of the bottom of the washing tank (3) is provided with the liquid discharge pipe (12), and one end of the liquid discharge pipe (12) close to the washing tank (3) is provided with the control valve.
3. A boiler flue gas waste heat recovery and exhaust gas treatment device according to claim 1, characterized in that, The boiler (1) is installed in the first workshop (13), the washing tank (3) and the liquid supply tank (7) are installed in the second workshop (14), and the first workshop (13) is located directly below the second workshop (14).
4. A boiler flue gas waste heat recovery and exhaust gas treatment device according to claim 1, characterized in that, The inner bottom of the washing tank (3) is provided with the mesh filler (15), and the mesh filler (15) is located above the waste gas pipeline (2).
5. A boiler flue gas waste heat recovery and exhaust gas treatment device according to claim 1, characterized in that, The bottom side of the smoke exhaust pipeline (10) and above the waste heat recovery pipeline (11) is provided with the detection hole (16).
6. A boiler flue gas waste heat recovery and exhaust gas treatment device according to claim 3, characterized in that, The induced draft fan (9) is installed on the ground of the second workshop (14) through the fixing seat (17).