Flue gas waste heat sludge low-temperature drying machine
By using heat exchange between flue gas waste heat and circulating water in the sludge dryer, a variety of heat source inputs are provided, which solves the problem of single heat source in the prior art, improves energy utilization and reduces production costs.
Patent Information
- Application Number
- CN202323499323.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-21
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2033-12-21
AI Technical Summary
The existing sludge dryer uses a heat pump system to provide heat energy, and the heat source is single, which cannot meet the needs of multiple heat sources in the workshop.
Design a flue gas waste heat sludge low-temperature dryer, including a flue gas heat exchanger and a hot water tank, which provides a heat source through the heat exchange between the flue gas and the circulating water, and the hot water then heats the air in the circulating air passage through the heating module. Heat exchange is carried out again through hot water return water, and a variety of heat sources are input using the waste heat of flue gas.
Effective utilization of preheating resources generated by the workshop improves energy utilization and reduces production costs.
Smart Images
Figure CN222211174U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sludge drying, in particular to a flue gas waste heat sludge low-temperature drying machine. Background Art
[0002] Existing sludge drying machines generally use heat pump systems for heating, such as a heat pump sludge drying system with Chinese patent publication number CN115818921A, which includes an absorption heat pump, a sludge drying machine, a cooling tower, a first circulation pipeline and a second circulation pipeline; the absorption heat pump includes a heat absorption part and a heat release part, and the sludge drying machine includes a circulation air duct, a condenser, an evaporator and a sludge conveying mechanism; the circulation air duct passes through the condenser, the evaporator and the sludge conveying mechanism, and the sludge conveying mechanism is arranged between the air outlet of the condenser and the air inlet of the evaporator; the first circulation pipeline passes through the heat release part and the condenser, and the condenser is used to transfer the heat in the first circulation pipeline to the circulation air duct; the second circulation pipeline passes through the heat absorption part, the evaporator and the cooling tower, and the evaporator is used to transfer the heat in the circulation air duct to the second circulation pipeline. This type of drying machine uses a heat pump system to provide heat energy, and the heat source is relatively single, which cannot meet the needs of multiple heat source input in the workshop. Summary of the invention
[0003] The technical problem to be solved by the utility model is to provide a flue gas waste heat sludge low-temperature drying machine, which can provide different heat source inputs and effectively utilize the preheating generated in the workshop.
[0004] In order to solve the above technical problems, the technical solution of the utility model is: a flue gas waste heat sludge low-temperature drying machine, including a heating module and a heat source that provides thermal energy to the heating module, the heat source includes a flue gas heat exchanger and a hot water tank, the flue gas heat exchanger includes a first heat exchange pipeline and a second heat exchange pipeline, the flue gas pipeline is connected to the first heat exchange pipeline, the output end of the second heat exchange pipeline is connected to the input end of the heating module through a hot water outlet pipe, the output end of the heating module is connected to the input end of the hot water tank through a hot water return pipe, and the output end of the hot water tank is connected to the input end of the second heat exchange pipeline through two connecting pipelines arranged in parallel. Principle of the utility model: the flue gas enters the first heat exchange pipeline of the flue gas heat exchanger through the flue gas pipeline, the waste heat of the flue gas is heat exchanged with the circulating water in the second heat exchange pipeline through the fins of the flue gas heat exchanger, the heated hot water is sent to the heating module through the hot water outlet pipe, the heating module heats the air in the circulating air path, the hot water after heat exchange enters the hot water tank through the hot water return pipe, and the hot water finally enters the second heat exchange pipeline of the flue gas heat exchanger through the connecting pipeline for heat exchange again; the utility model can effectively utilize the waste heat of the flue gas generated in the workshop, improve the utilization rate of energy and reduce production costs.
[0005] As an improvement, the flue gas pipeline includes a first three-way pipe and a second three-way pipe, the first interface of the first three-way pipe is connected to the input end of the first heat exchange pipeline through a first electric valve, the output end of the first heat exchange pipeline is connected to the first interface of the second three-way pipe, the second interface of the first three-way pipe is provided with a first flange, the second interface of the second three-way pipe is provided with a second flange, a connecting elbow is provided between the third interface of the first three-way pipe and the third interface of the second three-way pipe, and a second electric valve is provided on the connecting elbow.
[0006] As an improvement, the two ends of the two connecting pipelines are connected by a three-way valve, and the output ends of the two connecting pipelines are connected to a drain pipe.
[0007] As an improvement, the connecting pipeline is provided with a first flange gate valve, a Y-type filter, a first shock-absorbing flange, a water pump, a second shock-absorbing flange, a check valve and a second flange gate valve in sequence according to the flow direction.
[0008] As an improvement, the hot water tank is provided with an overflow port.
[0009] Compared with the prior art, the utility model has the following beneficial effects:
[0010] The flue gas exchanges heat with water through the flue gas heat exchanger, and the hot water exchanges heat with the air in the circulating air path through the heating module, which can effectively utilize the waste heat of the flue gas generated in the workshop, improve energy utilization and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the utility model.
[0012] Figure 2 Schematic diagram of heat source. Implementation
[0013] The utility model will be further described below in conjunction with the accompanying drawings.
[0014] like Figure 1 As shown, a flue gas waste heat sludge low temperature drying machine includes a heating module 3 and a heat source that provides heat energy to the heating module 3. The heating module 3 is arranged in the circulating air path of the sludge drying, and the heating module 3 has a heat exchange function, and the two media exchange heat through the heating module 3.
[0015] like Figure 1 , 2As shown, the heat source includes a flue gas heat exchanger 1, a hot water tank 2 and a flue gas pipeline 6. The flue gas heat exchanger 1 includes a first heat exchange pipeline and a second heat exchange pipeline, and the first heat exchange pipeline and the second heat exchange pipeline perform heat exchange through fins; the flue gas pipeline 6 is connected to the first heat exchange pipeline, and the circulation pipeline is connected to the second heat exchange pipeline, and the flue gas performs heat exchange with the circulating water through the flue gas heat exchanger 1. The output end of the second heat exchange pipeline is connected to the input end of the heating module 3 through the hot water outlet pipe 4, and the output end of the heating module 3 is connected to the input end of the hot water tank 2 through the hot water return pipe 5. The output end of the hot water tank 2 is connected to the input end of the second heat exchange pipeline through two parallel connection pipelines 7, and the circulating water performs heat exchange with the circulating air through the heating module 3. The flue gas pipeline 6 comprises a first three-way pipe 61 and a second three-way pipe 62, wherein the first interface of the first three-way pipe 61 is connected to the input end of the first heat exchange pipeline through a first electric valve 63, and the output end of the first heat exchange pipeline is connected to the first interface of the second three-way pipe 62, the second interface of the first three-way pipe 61 is provided with a first flange, the second interface of the second three-way pipe 62 is provided with a second flange, and a connecting elbow 64 is provided between the third interface of the first three-way pipe 61 and the third interface of the second three-way pipe 62, and a second electric valve 65 is provided on the connecting elbow 64. The two ends of the two connecting pipelines 7 are connected through a three-way valve 78, and the output ends of the two connecting pipelines 7 are connected to a drain pipe 8; the connecting pipeline 7 is provided with a first flange gate valve 71, a Y-type filter 72, a first shock-absorbing flange 73, a water pump 74, a second shock-absorbing flange 75, a check valve 76, and a second flange gate valve 77 in sequence according to the flow direction; the hot water tank 2 is provided with an overflow port 21.
[0016] Principle of the utility model: the flue gas enters the first heat exchange pipeline of the flue gas heat exchanger 1 through the flue gas pipeline 6, the waste heat of the flue gas is heat exchanged with the circulating water in the second heat exchange pipeline through the fins of the flue gas heat exchanger 1, the heated hot water is sent to the heating module 3 through the hot water outlet pipe 4, the heating module 3 heats the air in the circulating air path, the hot water after heat exchange enters the hot water tank 2 through the hot water return pipe 5, and the hot water finally enters the second heat exchange pipeline of the flue gas heat exchanger 1 through the connecting pipe 7 for heat exchange again; the utility model can effectively utilize the waste heat of the flue gas generated in the workshop, improve the utilization rate of energy and reduce production costs.
Claims
1. A flue gas waste heat sludge low temperature drying machine, comprising a heating module and a heat source providing heat energy to the heating module, characterized in that: The heat source includes a flue gas heat exchanger and a hot water tank. The flue gas heat exchanger includes a first heat exchange pipeline and a second heat exchange pipeline. The flue gas pipeline is connected to the first heat exchange pipeline. The output end of the second heat exchange pipeline is connected to the input end of the heating module through a hot water outlet pipe. The output end of the heating module is connected to the input end of the hot water tank through a hot water return pipe. The output end of the hot water tank is connected to the input end of the second heat exchange pipeline through two connecting pipelines arranged in parallel.
2. The flue gas waste heat sludge low temperature drying machine according to claim 1 is characterized by: The flue gas pipeline includes a first three-way pipe and a second three-way pipe, the first interface of the first three-way pipe is connected to the input end of the first heat exchange pipeline through a first electric valve, the output end of the first heat exchange pipeline is connected to the first interface of the second three-way pipe, the second interface of the first three-way pipe is provided with a first flange, the second interface of the second three-way pipe is provided with a second flange, a connecting elbow is provided between the third interface of the first three-way pipe and the third interface of the second three-way pipe, and a second electric valve is provided on the connecting elbow.
3. The flue gas waste heat sludge low temperature drying machine according to claim 1 is characterized by: The two ends of the two connecting pipelines are connected through a three-way valve, and the output ends of the two connecting pipelines are connected to a drain pipe.
4. The flue gas waste heat sludge low temperature drying machine according to claim 1 is characterized by: The connecting pipeline is provided with a first flange gate valve, a Y-type filter, a first shock-absorbing flange, a water pump, a second shock-absorbing flange, a check valve and a second flange gate valve in sequence according to the flow direction.
5. The flue gas waste heat sludge low temperature drying machine according to claim 1 is characterized by: The hot water tank is provided with an overflow port.