Condensing and recycling device for boiler flue gas

Abstract

The utility model relates to the technical field of boiler flue gas condensation and recovery, and discloses a boiler flue gas condensation and recovery device which comprises a flue gas inlet channel, and a flue gas inlet pipe is arranged at the top of the flue gas inlet channel and connected with the flue gas inlet channel. A shunting channel is arranged on one side of the smoke inlet channel and is connected with the smoke inlet channel through a plurality of condensation exchange pipes; and a smoke exhaust pipe is arranged at the top of the shunting channel. And the contact area between the flue gas and the condensing medium can be effectively increased through the multiple sets of condensing exchange pipes, so that the condensing efficiency is improved, and more flue gas heat can be recycled. Meanwhile, through the vertical wave-shaped design of the smoke inlet channel and the flow dividing channel, the flowing path of the smoke in the channels can be increased, the residence time of the smoke in the device is prolonged, and the heat exchange efficiency is further improved.

Description

Technical Field

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

[0002] Boilers are important thermal energy equipment, widely used in industrial production and daily life. They heat water or other working fluids by burning fuel (such as coal, natural gas, oil, etc.), generating steam or hot water, thereby providing thermal energy for various equipment and systems.

[0003] The structure of a boiler typically includes the following main components: furnace, drum, water-cooled wall, superheater, economizer, and air preheater. The furnace is where the fuel is burned, where high-temperature flames and flue gases generate heat. The drum is used to store and distribute water, while also transporting the generated steam to the required locations. The water-cooled wall is a water pipe surrounding the furnace, which absorbs heat from the furnace and prevents the furnace wall from overheating. The superheater, located at the top of the boiler, is used to heat saturated steam into superheated steam to improve thermal efficiency. The economizer and air preheater are used to recover heat from the flue gases and preheat the air and feed water entering the furnace, respectively, thereby improving the overall thermal efficiency of the boiler.

[0004] However, traditional boiler systems generate large amounts of flue gas during combustion, which contains significant amounts of heat energy. This flue gas is typically discharged into the atmosphere through a chimney. This exhaust not only wastes heat energy but also causes significant environmental pollution due to the harmful substances it contains. To improve this situation, only a portion of the heat in the flue gas is typically recovered, and the recovery of the condensed heat from the water vapor in the flue gas is limited, resulting in poor results and low efficiency.

[0005] Therefore, based on the above technical problems, it is necessary for technicians in this field to develop a boiler flue gas condensation recovery and utilization device. Utility Model Content

[0006] The purpose of the utility model is to provide a boiler flue gas condensation recovery and utilization device to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A technical solution for a boiler flue gas condensation recovery and utilization device includes a smoke inlet channel, a smoke inlet pipe is installed on the top of the smoke inlet channel, the smoke inlet pipe is connected to the smoke inlet channel, a diversion channel is provided on the opposite side of the smoke inlet channel, multiple groups of condensation exchange tubes are provided between the smoke inlet channel and the diversion channel, the multiple groups of condensation exchange tubes are connected to the smoke inlet channel and the diversion channel, a condensation water pipe is provided at the bottom of the diversion channel, and a smoke exhaust pipe is provided at the top of the diversion channel.

[0009] As a preferred technical solution, the smoke inlet channel and the diversion channel are designed in a vertical wave shape, and a plurality of the smoke inlet channels and the diversion channels are arranged side by side.

[0010] As a preferred technical solution, multiple groups of condensation exchange tubes located between the smoke inlet channel and the diversion channel are arranged in an evenly spaced and staggered manner.

[0011] As a preferred technical solution, the bottoms of the multiple condensate pipes are connected to a collecting pipe.

[0012] As a preferred technical solution, the diversion channel is used to divert the condensed liquid and gas, the gas is discharged along the smoke exhaust pipe, and the liquid is discharged along the condensed water pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] (1) The utility model is a boiler flue gas condensation recovery and utilization device. The multiple sets of condensation exchange tubes provided can effectively increase the contact area between the flue gas and the condensing medium, thereby improving the condensation efficiency and allowing more flue gas heat to be recovered and utilized. At the same time, the vertical wave-shaped design of the smoke inlet channel and the diversion channel can increase the flow path of the flue gas within the channel, extend the residence time of the flue gas within the device, and further improve the heat exchange efficiency.

[0015] (2) The utility model is a boiler flue gas condensation recovery and utilization device. The condensation exchange tubes are arranged at equal intervals and staggered positions to ensure that the flue gas contacts the condensation tube wall more evenly when passing through, avoiding local overheating or overcooling, thereby improving the condensation effect and the overall heat recovery rate. The condensed liquid and gas are effectively separated through the diversion channel, ensuring the smooth discharge of the liquid, while reducing the resistance of the condensed water droplets to the flue gas flow, and improving the exhaust efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a boiler flue gas condensation recovery and utilization device;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of a boiler flue gas condensation recovery and utilization device.

[0018] In the accompanying drawings: 1, smoke inlet channel; 2, smoke inlet pipe; 3, diversion channel; 4, smoke exhaust pipe; 5, condensation exchange pipe; 6, condensed water pipe; 7, collecting pipe. DETAILED DESCRIPTION

[0019] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.

[0020] like Figure 1-2 As shown, the utility model provides a technical solution for a boiler flue gas condensation recovery and utilization device: it includes a smoke inlet channel 1, a smoke inlet pipe 2 is installed on the top of the smoke inlet channel 1, the smoke inlet pipe 2 is connected to the smoke inlet channel 1, and a diversion channel 3 is provided on the opposite side of the smoke inlet channel 1. The smoke inlet channel 1 and the diversion channel 3 are designed in a vertical wave shape, and the smoke inlet channel 1 and the diversion channel 3 are arranged in multiples side by side, and multiple groups of condensation exchange tubes 5 are arranged between the smoke inlet channel 1 and the diversion channel 3. The multiple groups of condensation exchange tubes 5 are connected to the smoke inlet channel 1 and the diversion channel 3, and the multiple groups of condensation exchange tubes 5 located between the smoke inlet channel 1 and the diversion channel 3 are arranged in an evenly spaced staggered manner. A condensation water pipe 6 is connected to the bottom of the diversion channel 3, and the bottoms of the multiple condensation water pipes 6 are commonly connected to a collecting pipe 7. The top of the diversion channel 3 is connected to a smoke exhaust pipe 4, and the diversion channel 3 is used to divert the condensed liquid and gas, and the gas is discharged along the smoke exhaust pipe 4, and the liquid is discharged along the condensation water pipe 6.

[0021] In this embodiment, during use, flue gas from the boiler enters the smoke inlet channel 1 through the smoke inlet pipe 2. As the flue gas flows through the wavy smoke inlet channel 1, its unique structure prolongs the flue gas's flow path, increasing its contact time with the condensation exchange tube 5 and thereby improving heat exchange efficiency. Simultaneously, heat in the flue gas is transferred to the condensing medium through the condensation exchange tube 5, allowing the heat in the flue gas to be recovered.

[0022] In the condensation exchange tube 5, the flue gas's heat is effectively absorbed, gradually lowering its temperature and causing some of the water vapor to condense into liquid water. The condensed flue gas then enters the diversion channel 3, whose structural design effectively separates the liquid and gas. The condensed water flows along the condensate pipe 6 into the manifold 7 and ultimately exits the system, while the condensed gas is discharged through the exhaust pipe 4.

[0023] Due to the evenly spaced, staggered arrangement of the condensation exchange tubes 5, the flue gas has more uniform contact with the tube walls as it passes through them, avoiding localized overheating or overcooling, thereby improving the condensation effect and overall heat recovery rate. Furthermore, the vertical wave-shaped design of the diversion channel 3 not only increases the residence time of the flue gas within the device, but also reduces the resistance to flue gas flow, thereby improving exhaust efficiency.

[0024] This utility model can not only effectively recover the heat in the flue gas and reduce the waste of heat energy, but also reduce the emission of harmful substances in the flue gas and alleviate the pollution to the environment. Through the application of this device, the thermal efficiency of the boiler system can be significantly improved, the goal of energy conservation and emission reduction can be achieved, and good economic and social benefits can be achieved.

[0025] The working principle and use process of the utility model: After the utility model is installed, it works according to the above implementation method until all working steps are completed.

[0026] The above content is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent replacement or modification made by any person with relevant skills in this technical field based on the technical framework and core concepts disclosed in this utility model shall be included in the scope of protection of this utility model.

[0027] In the explanation of the present invention, it should be made clear that terms such as "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends", etc. are only used for description based on the relative position or direction shown in the drawings, and are intended to simplify the description process, rather than limiting the actual position, direction or structure of the device or component, and therefore should not be regarded as constraints on the present invention.

[0028] Furthermore, in this utility model, unless otherwise explicitly stated, terms such as "install," "set," "connect," "fix," and "screw" should be interpreted broadly. They may refer to a fixed connection, a detachable connection, or even the integration of two components; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through some medium; they may also refer to the internal connection between two components or the interaction between them. Those skilled in the art should be able to understand the specific meanings of these terms in this utility model based on the specific context.

[0029] Furthermore, the embodiments described herein are merely illustrative, intended to better illustrate the basic principles and practical applications of this utility model, and are not intended to limit its scope of application. Based on the above description, various modifications and variations are possible. Therefore, any modifications, equivalent substitutions, and improvements made within the spirit and principles embodied in this utility model shall be deemed to fall within the scope of protection of this utility model.

Claims

1. A boiler flue gas condensation recovery and utilization device, characterized in that: The invention comprises a smoke inlet channel (1), a smoke inlet pipe (2) is installed on the top of the smoke inlet channel (1), the smoke inlet pipe (2) is connected to the smoke inlet channel (1), a diversion channel (3) is provided on the opposite side of the smoke inlet channel (1), a plurality of groups of condensation exchange tubes (5) are provided between the smoke inlet channel (1) and the diversion channel (3), the plurality of groups of condensation exchange tubes (5) are connected to the smoke inlet channel (1) and the diversion channel (3), a condensation water pipe (6) is provided at the bottom of the diversion channel (3), and a smoke exhaust pipe (4) is provided at the top of the diversion channel (3).

2. The boiler flue gas condensation recovery and utilization device according to claim 1, characterized in that: The smoke inlet channel (1) and the diversion channel (3) are designed in a vertical wave shape, and a plurality of the smoke inlet channels (1) and the diversion channels (3) are arranged side by side.

3. The boiler flue gas condensation recovery and utilization device according to claim 1, characterized in that: The multiple groups of condensation exchange tubes (5) located between the smoke inlet channel (1) and the diversion channel (3) are arranged in an evenly spaced and staggered manner.

4. The boiler flue gas condensation recovery and utilization device according to claim 2, characterized in that: The bottoms of the plurality of condensed water pipes (6) are commonly connected to a collecting pipe (7).

5. The boiler flue gas condensation recovery and utilization device according to claim 1, characterized in that: The diversion channel (3) is used to divert the condensed liquid and gas, the gas is discharged along the smoke exhaust pipe (4), and the liquid is discharged along the condensed water pipe (6).

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