Flue gas waste heat efficient energy-saving recoverer

Abstract

The utility model discloses a flue gas waste heat efficient energy-saving recoverer, which relates to the technical field of flue gas waste heat recoverers, and comprises a flue gas box, a water tank arranged on the flue gas box, and a plurality of heat exchange tubes, a plurality of flue tubes penetrating through the water tank are arranged in the water tank, the flue tubes and the water tank jointly define a water cavity, and the heat exchange tubes are arranged in the water cavity. One end of the heat exchange pipe is arranged in the smoke box, and the other end of the heat exchange pipe is arranged in the water cavity. The efficient and energy-saving flue gas waste heat recoverer can fully recover flue gas waste heat, the flue gas waste heat recovery efficiency is greatly improved, a large amount of energy is saved, and economic benefits are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of flue gas waste heat recovery devices, specifically to a high-efficiency and energy-saving flue gas waste heat recovery device. Background Technology

[0002] Flue gas is a major source of energy waste in general energy-consuming equipment. It contains a large amount of heat; boiler exhaust accounts for approximately 15% of energy consumption, while other equipment, such as stenters, dryers, and kilns in the printing and dyeing industry, primarily consume energy through flue gas emissions. The high-temperature flue gas emitted from various metallurgical furnaces often carries away 20-50% of the furnace's heat supply. If the flue gas is directly treated and then released, a large amount of heat contained within it will be directly dissipated into the air, resulting in energy waste.

[0003] Flue gas waste heat recovery mainly involves converting the heat carried by flue gas into usable heat through some form of heat exchange. For example, heating water with flue gas absorbs the heat from the flue gas and produces usable hot water, making it an important method for flue gas waste heat recovery. However, existing methods for absorbing flue gas heat through water typically involve placing the flue pipe through water. While this achieves waste heat recovery, its efficiency is low, resulting in insufficient recovery of flue gas waste heat. Utility Model Content

[0004] In view of the above-mentioned defects in the existing technology, the present invention aims to provide a high-efficiency energy-saving flue gas waste heat recovery device, which can fully recover the waste heat of flue gas and greatly improve the efficiency of flue gas waste heat recovery.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A high-efficiency energy-saving flue gas waste heat recovery device includes a flue gas box, a water tank disposed on the flue gas box, and multiple heat exchange tubes. Multiple flue pipes penetrating the water tank are disposed inside the water tank. The flue pipes and the water tank together form a water cavity. One end of each heat exchange tube is disposed inside the flue gas box, and the other end of each heat exchange tube is disposed inside the water cavity.

[0007] The flue gas box is provided with two rows of partitions, which are arranged alternately and staggered to form a flue that causes the flue gas to flow in an S-shape. The two ends of the flue gas box are respectively provided with flue outlets that are connected to the flue.

[0008] All of the flue pipes are arranged in parallel inside the water tank, and the pipe openings at both ends of the flue pipes are connected to the outside.

[0009] The pipe opening of one end of the smoke pipe and the flue opening of one end of the smoke gas tank are located at one end of the smoke gas waste heat efficient energy-saving recovery device, and the pipe opening of the other end of the smoke pipe and the flue opening of the other end of the smoke gas tank are located at the other end of the smoke gas waste heat efficient energy-saving recovery device.

[0010] The heat exchange pipe is a vacuum superconducting heat pipe.

[0011] The water inlet is arranged on the water tank, and a water inlet valve is arranged on the water inlet.

[0012] The water outlet is arranged on the water tank, and a water outlet valve is arranged on the water outlet.

[0013] The blowdown port is arranged on the water tank, and a blowdown valve is arranged on the blowdown port.

[0014] The exhaust port is arranged on the water tank, and an exhaust valve is arranged on the exhaust port.

[0015] The maintenance port is arranged on the water tank, and a sealing cover is arranged on the maintenance port.

[0016] The beneficial effects of the present application are as follows:

[0017] The smoke gas waste heat efficient energy-saving recovery device provided by the present application is characterized in that a smoke pipe is arranged in the water tank, and a heat exchange pipe is arranged in the smoke gas tank and the water tank, so that the heat exchange between the smoke gas and the water is realized through the smoke pipe and the heat exchange pipe during the process of the smoke gas passing through the recovery device, the heat exchange area is greatly increased, the heat in the smoke gas is fully recovered, the heat exchange efficiency is improved, a large amount of energy is saved, and the economic benefit is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the smoke gas waste heat efficient energy-saving recovery device of the present application;

[0019] Figure 2 is one of the sectional views of Figure 1 ;

[0020] Figure 3 is another sectional view of Figure 1 ;

[0021] In the drawing: 1, smoke gas tank; 2, water tank; 21, water inlet; 22, water outlet; 23, blowdown port; 24, exhaust port; 25, maintenance port; 3, heat exchange pipe; 4, smoke pipe; 5, partition plate. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples, and it should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model. Among them, Figure 2 , Figure 3 The arrow direction is the flue gas flow direction.

[0023] As shown in Figures 1 to 3 , the embodiment discloses a flue gas waste heat efficient energy-saving recovery device, which comprises a flue gas tank 1, a water tank 2 arranged on the flue gas tank 1, and a plurality of heat exchange pipes 3, a plurality of smoke pipes 4 penetrating through the water tank 2 are arranged in the water tank 2, the smoke pipes 4 and the water tank 2 jointly form a water cavity, one end of the heat exchange pipe 3 is arranged in the flue, and the other end of the heat exchange pipe 3 is arranged in the water cavity.

[0024] The flue gas waste heat efficient energy-saving recovery device provided by the embodiment is provided with the smoke pipes 4 in the water tank 2, and the heat exchange pipes 3 are arranged in the flue gas tank 1 and the water tank 2, so that the flue gas not only exchanges heat with the water through the smoke pipes 4 during the process of passing through the recovery device, but also exchanges heat with the water through the heat exchange pipes 3, the heat exchange area is greatly increased, the heat in the flue gas is fully recovered, the heat exchange efficiency is improved, a large amount of energy is saved, and the economic benefit is improved.

[0025] Two rows of partitions 5 are arranged in the flue gas tank 1 in the embodiment, the two rows of partitions 5 are alternately and staggeredly arranged and jointly form a flue with the flue gas tank 1, the flue gas tank 1 is provided with flue openings which are in communication with the flue at both ends. By arranging the above flue, the path of the flue gas in the flue gas tank 1 is prolonged, so that the flue gas can fully contact each heat exchange pipe 3, and the heat exchange efficiency is further improved. In actual application, the flue gas tank 1 can also be directly arranged in an S shape, and the specific selection is made according to actual requirements, and the embodiment does not limit this.

[0026] All the smoke pipes 4 are arranged in parallel in the water tank 2 in the embodiment, and the pipe openings at both ends of the smoke pipes 4 are in communication with the outside.

[0027] Preferably, the pipe opening at one end of the smoke pipe 4 and the flue opening at one end of the flue gas tank 1 are located at one end of the flue gas waste heat efficient energy-saving recovery device, and the pipe opening at the other end of the smoke pipe 4 and the flue opening at the other end of the flue gas tank 1 are located at the other end of the flue gas waste heat efficient energy-saving recovery device.

[0028] Since the heat efficiency of the vacuum superconducting heat pipe far exceeds the known metals in the world today, in order to further improve the heat exchange efficiency, the heat exchange pipe 3 is preferably a vacuum superconducting heat pipe in the embodiment.

[0029] The water tank 2 in the embodiment is provided with a water inlet 21, a water outlet 22, a sewage outlet 23, an exhaust outlet 24 and an inspection opening 25.

[0030] The above describes one embodiment of the flue gas waste heat efficient energy-saving recovery device, and more embodiments are not described here.

[0031] The utility model is not limited to the above specific embodiment, and all kinds of changes made by ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

Claims

1. A flue gas waste heat efficient energy recovery device, characterized in that, The application relates to a flue gas waste heat efficient energy recovery device, which comprises a flue gas box, a water tank arranged on the flue gas box, and a plurality of heat exchange pipes, a plurality of flue pipes are arranged in the water tank and penetrate through the water tank, the flue pipes and the water tank jointly form a water cavity, one end of the heat exchange pipe is arranged in the flue gas box, and the other end of the heat exchange pipe is arranged in the water cavity.

2. The flue gas waste heat efficient energy recovery device according to claim 1, characterized in that, Two rows of partitions are arranged in the flue gas box, the two rows of partitions are alternately and staggeredly arranged and jointly form flue channels with the flue gas box, the flue channels make the flue gas flow in an S shape, and flue openings are arranged at two ends of the flue gas box and are connected with the flue channels.

3. The flue gas high-efficiency energy-saving recycler according to claim 2, characterized in that, All the flue pipes are arranged in parallel in the water tank, and the pipe openings at two ends of the flue pipes are connected with the outside.

4. The flue gas high-efficiency energy-saving recycler of claim 3, wherein, The pipe opening at one end of the flue pipe and the flue opening at one end of the flue gas box are located at one end of the flue gas waste heat efficient energy recovery device, and the pipe opening at the other end of the flue pipe and the flue opening at the other end of the flue gas box are located at the other end of the flue gas waste heat efficient energy recovery device.

5. The flue gas high-efficiency energy-saving recycler of claim 1, wherein, The heat exchange pipe is a vacuum superconducting heat pipe.

6. The flue gas residual heat efficient energy recovery device according to any one of claims 1 to 5, characterized in that, A water inlet is arranged on the water tank, and a water inlet valve is arranged on the water inlet.

7. The flue gas high-efficiency energy-saving recycler of claim 6, wherein, A water outlet is arranged on the water tank, and a water outlet valve is arranged on the water outlet.

8. The flue gas high-efficiency energy-saving recycler of claim 7, wherein, A sewage outlet is arranged on the water tank, and a sewage outlet valve is arranged on the sewage outlet.

9. The flue gas high-efficiency energy-saving recycler of claim 8, wherein, An exhaust outlet is arranged on the water tank, and an exhaust outlet valve is arranged on the exhaust outlet.

10. The flue gas high-efficiency energy-saving recycler of claim 9, wherein, An inspection opening is arranged on the water tank, and a sealing cover is arranged on the inspection opening.

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