Waste heat recovery heating structure, waste heat recovery external heating structure and waste heat recovery chimney type heating structure

Abstract

The utility model relates to the technical field of waste heat recovery, in particular to a waste heat recovery heating structure, a waste heat recovery external heating structure and a waste heat recovery chimney type heating structure, which comprise a flue, a flow cavity for gas to flow is formed in the flue, and a heat exchange module and a plurality of filter groups for filtering waste gas are arranged in the flow cavity. The heat exchange module comprises a heat exchange cylinder and heat exchange pipes connected to the heat exchange cylinder in a sleeving mode, the first heat exchange pipe is a liquid inlet, the other end of the heat exchange pipe is a liquid outlet, the liquid outlet of the heat exchange pipe is connected with a water pump, and the water pump is connected with hot water equipment. High-temperature gas in the flue passes through the filter set and then enters the heat exchange module, the passing gas heats the heat exchange pipe, liquid is introduced into a liquid inlet in one end of the heat exchange pipe, and after passing through the heat exchange pipe, water is heated, flows to a water pump through a liquid outlet and is supplied to hot water equipment through the water pump. According to the scheme, waste heat can be effectively recycled, convenience is brought to a heating system, and the heat exchange module can be of a built-in type, an external type and a chimney type.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, and in particular to a waste heat recovery heating structure, a waste heat recovery external heating structure and a waste heat recovery chimney heating structure. Background Art

[0002] With the continuous increase of industrial and commercial activities, a large amount of energy is consumed and wasted, and a large amount of waste heat is also generated. A large amount of waste heat in the exhaust gas of the incineration system is not comprehensively utilized, resulting in energy waste. Traditional waste heat recovery technology mainly focuses on the recovery and utilization of high-temperature media such as steam and hot oil, while the recovery and utilization of low-temperature waste heat is relatively less.

[0003] However, there are many application areas that require low-temperature hot water, such as heating systems, hot water supply, and industrial heating. Therefore, it is of great significance to develop an efficient waste heat recovery hot water heating structure. Utility Model Content

[0004] The purpose of the utility model is to provide a waste heat recovery heating structure, a waste heat recovery external heating structure and a waste heat recovery chimney heating structure in view of the deficiencies in the prior art.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A waste heat recovery and heating structure includes a flue, a flow cavity for gas flow is formed in the flue, a heat exchange module and a plurality of filter groups for filtering exhaust gas are arranged in the flow cavity, the heat exchange module includes a heat exchange cylinder and a heat exchange tube sleeved on the heat exchange cylinder, one end of the heat exchange tube is a liquid inlet, and the other end is a liquid outlet, the liquid outlet of the heat exchange tube is connected to a water pump, and the water pump is connected to a hot water device.

[0007] Furthermore: the heat exchange tube is a coil heat exchange tube.

[0008] Further: the coil-type heat exchange tube is a stainless steel pipe or a seamless steel pipe made of stainless steel.

[0009] Further: the coil heat exchange tube is a copper pipe made of copper material.

[0010] Further: the outer diameter of the heat exchange tube is ￠8-￠50mm.

[0011] Further: the heat exchange cylinder is connected to an air inlet group and an air outlet group, and the air outlet group includes a plurality of exhaust fans.

[0012] Further: the filter group is a flue gas filter plate.

[0013] A waste heat recovery external heating structure includes a flue, a flow cavity for gas flow is formed in the flue, a plurality of filter groups for exhaust gas filtering are arranged in the flow cavity, a heat outlet is arranged at one end of the flow cavity, the heat outlet is connected to a heat exchange module, the heat exchange module includes a heat exchange cylinder and a heat exchange tube sleeved on the outer end of the heat exchange cylinder, one end of the heat exchange tube is a liquid inlet, and the other end is a liquid outlet, the liquid outlet of the heat exchange tube is connected to a water pump, and the water pump is connected to a hot water device.

[0014] A waste heat recovery chimney type heating structure comprises a flue, a flow cavity for gas flow is formed in the flue, a plurality of filter groups for filtering waste gas are arranged in the flow cavity, a heat outlet is arranged at one end of the flow cavity, and the heat outlet is connected to the chimney.

[0015] Further: the inner diameter of the chimney is 8mm-60mm.

[0016] The beneficial effects of the utility model are as follows: the gas can be kept warm in the flue, and the high-temperature gas enters the heat exchange module after passing through the filter group. The passing gas heats the heat exchange tube, and the liquid is introduced into the liquid inlet at one end of the heat exchange tube. After passing through the heat exchange tube, the water is heated and reaches the water pump through the liquid outlet, and is supplied to the hot water equipment through the water pump. This solution can effectively recover waste heat and is a waste heat recovery hot water heating structure that is convenient for providing hot water to heating systems, domestic water, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the waste heat recovery heating structure.

[0018] Figure 2 This is a schematic diagram of the structure of the waste heat recovery external heating structure.

[0019] Figure 3 This is a schematic diagram of the structure of the waste heat recovery chimney-type heating structure.

[0020] Reference numerals include:

[0021] 1- Flue,

[0022] 10-insulation layer, 11-flow cavity, 12-waste gas heating device, 13-filter group, 14-heat exchange module,

[0023] 15-first heat exchange tube, 16-second heat exchange tube, 17-heat exchange tube, 18-liquid inlet, 19-liquid outlet,

[0024] 2-Hot water equipment,

[0025] 20-water pump, 21-air inlet group, 22-air outlet group, 23-exhaust fan, 24-heat outlet, 25-chimney. DETAILED DESCRIPTION

[0026] The utility model is described in detail below with reference to the accompanying drawings.

[0027] like Figure 1 As shown, embodiment 1, a waste heat recovery heating structure, includes a flue 1, a flow cavity 11 for gas flow is formed in the flue 1, a heat exchange module 14 and a plurality of filter groups 13 for filtering exhaust gas are arranged in the flow cavity 11, the heat exchange module 14 includes a heat exchange cylinder and a heat exchange tube 17 sleeved on the heat exchange cylinder, the heat exchange tube 17 has a liquid inlet 18 at one end and a liquid outlet 19 at the other end, the liquid outlet 19 of the heat exchange tube 17 is connected to a water pump 20, and the water pump 20 is connected to a hot water device 2.

[0028] The gas can be kept warm in the flue 1, and the high-temperature gas enters the heat exchange module 14 after passing through the filter group 13. The passing gas heats the heat exchange tube 17, and the liquid is introduced into the liquid inlet 18 at one end of the heat exchange tube 17. After passing through the heat exchange tube 17, the water is heated and reaches the water pump 20 through the liquid outlet 19, and is supplied to the hot water equipment 2 through the water pump 20. This solution can effectively recover waste heat and is a waste heat recovery hot water heating structure that is convenient for providing hot water to heating systems, domestic water, etc.

[0029] Preferably, the heat exchange tube is divided into a first heat exchange tube 15 and a second heat exchange tube 16. The first heat exchange tube 15 is connected to the end of the flue 1, the end of the first heat exchange tube 15 is connected to the second heat exchange tube 16, and the end of the second heat exchange tube 16 is connected to the air outlet group 22. The second heat exchange tube 16 has the same structure as the first heat exchange tube 15. The outer end of the first heat exchange tube 15 is sleeved with a coil-type heat exchange tube, and the two ends of the coil-type heat exchange tube are respectively provided with a liquid inlet 18 and a liquid outlet 19. The primary heat exchange tube and the secondary heat exchange tube are used for heat exchange through the coil-type heat exchange tube.

[0030] The flow cavity 11 in the flue 1 is also provided with an exhaust gas heating device 12 for preheating the exhaust gas. The gas introduced into the flue 1 enters the exhaust gas heating device 12 to heat the exhaust gas, thereby increasing the temperature of the exhaust gas. The temperature of the heat exchange tube 17 in the subsequent heat exchange module 14 is increased when it is heated, and the liquid temperature that can be supplied is relatively high, with supply diversity.

[0031] The heat exchange tube 17 is a coil-type heat exchange tube. The coil-type heat exchange tube is arranged on the heat exchange tube. When the gas in the flue 1 is passed into the heat exchange tube, the coil-type heat exchange tube 17 passes through more areas in the heat exchange tube. The heat exchange tube 17 is heated by heat conduction, so that the water in the heat exchange tube 17 can be fully heated. The water can be fully heated to the required high temperature, which is convenient for subsequent use.

[0032] Preferably, the coil-type heat exchange tube is a stainless steel pipe or a seamless steel pipe made of stainless steel material. The stainless steel pipe has good thermal conductivity, and the water in the heat exchange tube 17 can be quickly heated and heated.

[0033] Preferably, the coil-type heat exchange tubes are made of aluminum fins or stainless steel fins, seamless steel tubes or stainless steel tubes.

[0034] Preferably, the coil-type heat exchange tube is a copper pipe made of copper material. The copper heat exchange tube 17 has high corrosion resistance and can heat other liquids to increase the temperature, thereby increasing the usage scenarios.

[0035] Preferably, the outer diameter of the heat exchange tube 17 is ￠8-￠50 mm.

[0036] Preferably, the wall cavity of the flue 1 is provided with an insulation layer 10, and the insulation layer 10 is formed by aluminum silicate fiber material. Aluminum silicate fiber has the advantages of high temperature resistance, good thermal stability, low thermal conductivity, small heat capacity, good resistance to mechanical vibration, small thermal expansion, and good thermal insulation performance. It can isolate the temperature inside the flow cavity 11 of the flue 1 from the outside world, so that the temperature on the surface of the flue 1 will not be too high and will not burn others.

[0037] This solution strengthens the quality and thickness of the heat exchange tube 17 material, thereby improving the heat exchange efficiency and saving energy consumption.

[0038] Furthermore, the second heat exchange tube 16 is connected to an air inlet group 21 and an air outlet group 22. The air outlet group 22 and the air inlet group 21 both include multiple exhaust fans 23. Due to the setting of the exhaust fan 23, negative pressure is formed, so that the smoke flows toward the side of the exhaust fan 23. The heat in the second heat exchange tube 16 can also be blown out into hot air through the exhaust fan 23. The hot air can be used for industrial heating equipment, such as dryers.

[0039] Furthermore, the filter group 13 is a flue gas filter plate. During the flow, the flue gas impurities are filtered through multiple groups of filter plates to purify the exhaust gas to meet the emission standards, and the subsequent exhaust gas pollution is greatly reduced.

[0040] like Figure 2 As shown, embodiment 2, a waste heat recovery external heating structure, includes a flue 1, a flow cavity 11 for gas flow is formed in the flue 1, a plurality of filter groups 13 for exhaust gas filtering are arranged in the flow cavity 11, a heat outlet 24 is arranged at one end of the flow cavity 11, the heat outlet 24 is connected to a heat exchange module 14, the heat exchange module 14 includes a heat exchange cylinder and a heat exchange tube 17 sleeved on the outer end of the heat exchange cylinder, the heat exchange tube 17 has a liquid inlet 18 at one end and a liquid outlet 19 at the other end, the liquid outlet 19 of the heat exchange tube 17 is connected to a water pump 20, and the water pump 20 is connected to a hot water device 2.

[0041] The gas can be kept warm in the flue 1. The high-temperature gas passes through the filter group 13 and then enters the heat exchange module 14 through the heat outlet 24. The passing gas heats the heat exchange tube 17. The liquid is introduced into the liquid inlet 18 at one end of the heat exchange tube 17. After passing through the heat exchange tube 17, the water is heated and reaches the water pump 20 through the liquid outlet 19. The water is supplied to the hot water device 2 through the water pump 20. This solution adopts an external heat exchange module 14, which can be connected to a larger hot water heating device, and can effectively recover waste heat, which is a waste heat recovery hot water heating structure that is convenient for providing hot water to heating systems, domestic water, etc.

[0042] like Figure 3 As shown, in the third embodiment, a waste heat recovery chimney-type heating structure includes a flue 1, a flow cavity 11 for gas flow is formed in the flue 1, a plurality of filter groups 13 for exhaust gas filtering are arranged in the flow cavity 11, a heat outlet 24 is arranged at one end of the flow cavity 11, and the heat outlet 24 is connected to a chimney 25. The flue 1 can keep the gas warm, and the high-temperature gas passes through the filter group 13 and enters the chimney 25 through the heat outlet 24. The gas after passing through the chimney 25 can be cooled, and its temperature can be reduced to 130°C at the lowest. The exhaust gas has little loss to the outside world, and it is not easy to melt the external equipment at high temperature.

[0043] Preferably, the inner diameter of the chimney 25 is 8 mm-60 mm.

[0044] In summary, it can be seen that the utility model has the above-mentioned excellent characteristics, which can enhance the performance unprecedented in the prior art and become a product with great practical value.

[0045] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A waste heat recovery heating structure, comprising a flue, characterized in that: A flow cavity for gas flow is formed in the flue, and a heat exchange module and multiple filter groups for filtering exhaust gas are arranged in the flow cavity. The heat exchange module includes a heat exchange cylinder and a heat exchange tube sleeved on the heat exchange cylinder. One end of the heat exchange tube is a liquid inlet, and the other end is a liquid outlet. The liquid outlet of the heat exchange tube is connected to a water pump, and the water pump is connected to a hot water device.

2. A waste heat recovery heating structure according to claim 1, characterized in that: The heat exchange tube is a coil-type heat exchange tube.

3. A waste heat recovery heating structure according to claim 2, characterized in that: The coil-type heat exchange tube is a stainless steel seamless steel tube made of stainless steel.

4. The waste heat recovery heating structure according to claim 2 is characterized in that: The coil-type heat exchange tube is a copper pipe made of copper.

5. The waste heat recovery heating structure according to claim 2, characterized in that: The outer diameter of the heat exchange tube is ￠8-￠50mm.

6. The waste heat recovery heating structure according to claim 1, characterized in that: The heat exchange cylinder is connected to an air inlet group and an air outlet group, and the air outlet group includes a plurality of exhaust fans.

7. The waste heat recovery heating structure according to claim 1, characterized in that: The filter group is a smoke filter plate.

8. A waste heat recovery external heating structure, including a flue, characterized in that: A flow cavity for gas flow is formed in the flue, and a plurality of filter groups for filtering exhaust gas are arranged in the flow cavity. A heat outlet is arranged at one end of the flow cavity, and the heat outlet is connected to a heat exchange module. The heat exchange module includes a heat exchange cylinder and a heat exchange tube sleeved on the outer end of the heat exchange cylinder. One end of the heat exchange tube is a liquid inlet, and the other end is a liquid outlet. The liquid outlet of the heat exchange tube is connected to a water pump, and the water pump is connected to a hot water device.

9. A waste heat recovery chimney type heating structure, comprising a flue, characterized in that: A flow cavity for gas flow is formed in the flue, a plurality of filter groups for filtering exhaust gas are arranged in the flow cavity, a heat outlet is arranged at one end of the flow cavity, and the heat outlet is connected to a chimney.

10. The waste heat recovery chimney type heating structure according to claim 9, characterized in that: The inner diameter of the chimney is 8mm-60mm.

Images