Composite heating dry distillation furnace
By introducing electric heating equipment and burners into the carbonization furnace, and using green electricity to heat the gas instead of burning coal gas, the problems of high coal gas consumption and waste of green electricity in the carbonization furnace are solved, achieving more efficient energy utilization and economic benefits.
Patent Information
- Application Number
- CN202423051971.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-10
AI Technical Summary
Existing distillation furnaces consume a large amount of coal gas when using high-temperature flue gas as a heat source, resulting in reduced economic efficiency. At the same time, the intermittent and fluctuating nature of green electricity leads to waste of green electricity.
A composite heating dry distillation furnace is used, combined with electric heating equipment and burners, to heat the gas with green electricity to generate high-temperature gas, which replaces part or all of the coal gas combustion. The gas is circulated and regulated through a fan and pipeline system, reducing coal gas consumption and absorbing excess green electricity.
It reduces gas consumption, improves the economic efficiency of the distillation furnace, avoids the waste of green electricity, and achieves more efficient energy utilization.
Smart Images
Figure CN223509834U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to dry distillation technical field, especially a kind of composite heating dry distillation furnace. BACKGROUND
[0002] Coal dry distillation is the process of heating and decomposing coal under the condition of air isolation. The furnace body is heated by external heat source, and the material in the furnace undergoes complex chemical changes at high temperature to generate different products. The heat source used in the existing furnace body dry distillation is usually high-temperature flue gas, which needs to be heated by burning coal gas. The high-temperature flue gas may be heated by coal gas or directly generated by burning coal gas. These heat sources all consume a large amount of coal gas, reducing economic benefits.
[0003] However, green electricity such as wind energy and solar energy has intermittency and volatility, which makes the power grid electricity demand low when the green electricity generation is high, and the power grid electricity demand high when the green electricity generation is low, resulting in waste of part of green electricity. SUMMARY
[0004] The technical problem to be solved by the utility model is to provide a composite heating dry distillation furnace that can utilize green electricity to reduce coal gas consumption and reduce green electricity waste.
[0005] To solve the above problems, the utility model provides a composite heating dry distillation furnace, which comprises a furnace body for dry distillation, an electric heating device for absorbing green electricity and heating gas to generate high-temperature gas, a burner for burning coal gas to generate high-temperature gas, and a fan for pressurizing the gas and sending it into the electric heating device. The fan is connected to the electric heating device through a pipeline, the electric heating device is connected to the burner or the furnace body through a pipeline, the burner is connected to the furnace body, and the burner is connected to an air inlet channel and a coal gas channel. The high-temperature gas required by the furnace body is generated by the electric heating device or the burner burning coal gas.
[0006] Further, when the gas is flue gas, the furnace body is connected to a flue gas pipeline for collecting flue gas, the flue gas pipeline is connected to an external discharge pipeline for discharging flue gas that does not need to be heated and a reflux pipeline for connecting with the fan, and valves are arranged on the external discharge pipeline and the reflux pipeline, or the external discharge pipeline and the reflux pipeline are connected to the flue gas pipeline through a three-way valve.
[0007] Further, a flue gas heat exchanger is further arranged on the flue gas pipeline for transferring flue gas heat to external equipment.
[0008] Further, the electric heating device is connected to the burner or the furnace body through multiple pipelines.
[0009] Further, a flow regulating valve for regulating flow is arranged on the pipeline between the electric heating device and the burner or furnace body.
[0010] Further, the electric heating device is multiple, each electric heating device is connected with the burner or furnace body through a pipeline, and a flow regulating valve for regulating flow is arranged on the pipeline between the fan and the electric heating device.
[0011] Further, each electric heating device is correspondingly connected with a fan.
[0012] Further, when the gas is air, the furnace body is connected with a circulating pipeline for collecting high-temperature gas after dry distillation, the circulating pipeline is connected with the fan, a waste gas pipeline for external discharge is arranged on the circulating pipeline, a valve for controlling circulation is arranged on the circulating pipeline, a valve for controlling external discharge is arranged on the waste gas pipeline, or a three-way valve is arranged at the connection position of the waste gas pipeline and the circulating pipeline.
[0013] Further, the fan is further connected with a gas supplementing pipeline, and a valve is arranged on the gas supplementing pipeline.
[0014] Further, the electric heating device is an electric heating furnace.
[0015] The first high-temperature gas in the composite heating dry distillation furnace of the utility model utilizes electric energy to improve the gas temperature to replace the mode of improving the gas temperature by burning coal gas during the peak of green electricity transmission, so that the consumption of coal gas is reduced, the economic benefit of the dry distillation furnace is improved, meanwhile, the excess green electricity can be absorbed, and the waste of green electricity is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a structure schematic view of a preferable implementation mode of the composite heating dry distillation furnace of the utility model.
[0017] Figure 2 is a structure schematic view of another preferable implementation mode of the composite heating dry distillation furnace of the utility model.
[0018] Figure 3 is a structure schematic view of another preferable implementation mode of the composite heating dry distillation furnace of the utility model.
[0019] Figure 4 is a structure schematic view of another preferable implementation mode of the composite heating dry distillation furnace of the utility model.
[0020] Figure 5 is a structure schematic view of another preferable implementation mode of the composite heating dry distillation furnace of the utility model.
[0021] Figure 6 is a structure schematic view of another preferable implementation mode of the composite heating dry distillation furnace of the utility model.
[0022] Figure 7 is a structural schematic view of another preferable embodiment of the composite heating dry distillation furnace.
[0023] The meanings of the various reference signs in the drawings are as follows:
[0024] Furnace body 1, fan 2, electric heating equipment 3, burner 4, flue gas pipeline 51, external exhaust pipeline 52, backflow pipeline 53, circulation pipeline 54, waste gas pipeline 55, air supplement pipeline 56, first valve 61, second valve 62, third valve 63, fourth valve 64, fifth valve 65, flow regulating valve 7, flue gas heat exchanger 8. DETAILED DESCRIPTION
[0025] The present utility model will be further described below in combination with the drawings.
[0026] It should be understood that the furnace body in all the embodiments of the present utility model is provided with a sandwich, and the high-temperature gas enters the sandwich of the furnace body to heat the furnace body, and the high-temperature gas does not contact the coal in the furnace body, and the dry distillation is performed on the coal by using the temperature of the furnace body during the dry distillation, so as to realize the oxygen-free dry distillation.
[0027] Embodiment one
[0028] As Figure 1The preferred embodiment of the composite heating dry distillation furnace shown in the utility model includes a furnace body 1, a fan 2, an electric heating device 3 and a burner 4. The furnace body 1 is used for dry distillation of coal, and the furnace body 1 is connected with a flue gas pipeline 51 for collecting flue gas, the flue gas pipeline 51 is connected with an external discharge pipeline 52 and a backflow pipeline 53, the backflow pipeline 53 is connected with the fan 2, a first valve 61 is arranged on the backflow pipeline 53, the first valve 61 is used for controlling the on-off of the backflow pipeline 53, when the first valve 61 is opened, flue gas can enter the electric heating device 3, and when the valve is closed, flue gas cannot enter the electric heating device 3; the external discharge pipeline 52 is connected with external desulfurization and denitrification equipment, the external discharge pipeline 52 is used for discharging flue gas that does not need to be heated in circulation, a second valve 62 is arranged on the external discharge pipeline 52, the second valve 62 is used for controlling the on-off of the external discharge pipeline 52, when the second valve 62 is opened, flue gas can be discharged into the desulfurization and denitrification equipment, and when the second valve 62 is closed, flue gas cannot be discharged. In another embodiment, a three-way valve can also be used to replace the first valve 61 and the second valve 62. When the first valve 61 is opened, the second valve 62 is closed, ensuring that flue gas enters the electric heating device 3; when the second valve 62 is opened, the first valve 61 is closed, ensuring that flue gas is discharged entirely. The electric heating device 3 is connected with the burner 4 through a pipeline, the electric heating device 3 heats flue gas to form high-temperature gas by using green electricity, and the high-temperature gas is sent into the furnace body 1 through the burner 4, at this time, the burner 4 is not working, and only serves as a passage. Generally, the electric heating device 3 is an electric heating furnace, and of course, it can also be other electric heating devices 3. It should be understood that in other embodiments, the electric heating device 3 can also be directly connected with the furnace body 1, and flue gas heated by the electric heating device 3 is directly sent into the furnace body 1 without passing through the burner 4. The burner 4 is connected with the furnace body 1, the burner 4 is connected with a coal gas passage for supplying coal gas and an air inlet passage for supplying air; when the burner 4 needs to burn, the coal gas passage and the air inlet passage start to supply coal gas and air. The burner 4 generates high-temperature gas by burning coal gas, and the high-temperature gas is directly sent into the furnace body 1. The temperature of the high-temperature gas is determined according to the dry distillation temperature required by the furnace body 1, and in this embodiment, the dry distillation temperature is taken as 1200 DEG C, so the high-temperature gas generated by the electric heating device 3 and the burner 4 is 1200 DEG C. When the electric heating device 3 works, that is, when green electricity is sufficient, at this time, the first valve 61 is opened, the second valve 62 is closed, flue gas enters the electric heating device 3, and the electric heating device 3 consumes green electricity to heat flue gas to generate high-temperature gas that is sent into the furnace body 1; when the electric heating device 3 does not work, that is, when green electricity is insufficient, at this time, the second valve 62 is opened, the first valve 61 is closed, flue gas is discharged, and the burner 4 burns coal gas to generate high-temperature gas that is sent into the furnace body 1.
[0029] In another embodiment, the electric heating device 3 can also heat the flue gas to 650°C, or even a higher temperature, according to actual needs, and then the burner 4 is used to heat the flue gas, and the flue gas is heated to 1200°C to form high-temperature gas, that is, the high-temperature gas is generated by the electric heating device 3 and the burner 4.
[0030] The electric energy is used to raise the temperature of the flue gas to replace the coal gas combustion to raise the temperature of the gas, thereby reducing the consumption of the coal gas and improving the economic benefit of the dry distillation furnace, and the excess green electricity can be absorbed, and the waste of green electricity is avoided.
[0031] Example Two
[0032] As shown in Figure 2 , the difference between this embodiment and Example One is that the burner 4 is arranged in three layers, and the number of layers of the burner 4 is matched with the structure of the furnace body 1, and there are multiple burners 4 in each layer, and the burners 4 in each layer are arranged according to needs. The electric heating device 3 is connected with the burner 4 through three pipes, and a flow regulating valve 7 is arranged on the pipe between the electric heating device 3 and the burner 4, and the flow of the corresponding pipe can be adjusted according to needs, so as to control the temperature of the furnace body 1. It should be understood that in other embodiments, the burner 4 can also be connected through three pipes.
[0033] As shown in Figure 3 , in another embodiment, each layer of the burner 4 can be connected with one electric heating device 3, so as to reduce the power requirement of the electric heating device 3 and reduce the cost; of course, more electric heating devices 3 can also be connected, and the more the electric heating devices 3, the lower the power requirement of the electric heating device 3.
[0034] As shown in Figure 4 , similarly, in another embodiment, each electric heating device 3 is connected with a fan 2, so as to reduce the power requirement of the fan 2 and reduce the cost.
[0035] Example Three
[0036] As shown in Figure 5As shown, the composite heating dry distillation furnace of the embodiment comprises a furnace body 1, a fan 2, an electric heating device 3 and a burner 4. The furnace body 1 is used for dry distillation of coal, the electric heating device 3 heats air. The electric heating device 3 is connected with the burner 4 through a pipeline, the electric heating device 3 heats air to form high-temperature gas by using green electricity, and the high-temperature gas is sent into the furnace body 1 through the burner 4. At this time, the burner 4 is not working, and only serves as a channel for use. Generally, the electric heating device 3 is an electric heating furnace, and of course, it can also be other electric heating devices 3. It should be understood that in other embodiments, the electric heating device 3 can also be directly connected with the furnace body 1, and the air heated by the electric heating device 3 is directly sent into the furnace body 1 without passing through the burner 4. The burner 4 is connected with the furnace body 1, and the burner 4 is connected with a coal gas channel for supplying coal gas and an air inlet channel for supplying air; when the burner 4 needs to burn, the coal gas channel and the air inlet channel start to supply coal gas and air. The burner 4 generates high-temperature gas by burning coal gas, and directly sends the high-temperature gas into the furnace body 1. The temperature of the high-temperature gas is determined according to the required dry distillation temperature of the furnace body 1. In the embodiment, the dry distillation temperature is taken as 1200℃, so the high-temperature gas generated by the electric heating device 3 and the burner 4 is 1200℃. When the electric heating device 3 works, that is, when the green electricity is sufficient, the air enters the electric heating device 3, the electric heating device 3 consumes green electricity to heat the gas to generate high-temperature gas which is sent into the furnace body 1; when the electric heating device 3 does not work, that is, when the green electricity is insufficient, the burner 4 burns coal gas to generate high-temperature gas which is sent into the furnace body 1.
[0037] It should be understood that when the gas heated by the electric heating device is air, a plurality of burners 4, a plurality of electric heating devices 3 and a fan 2 can be arranged as in Embodiment Two.
[0038] Embodiment Four
[0039] As Figure 6As shown, this embodiment differs from Embodiment 3 in that the furnace body 1 is connected to a circulation pipe 54 for collecting air. The circulation pipe 54 is connected to a fan 2. A third valve 63 is installed on a waste gas pipe 55 for external discharge, and a fourth valve 64 is installed on the circulation pipe 54 for controlling circulation. When the electric heating device 3 is heating, the third valve 63 is closed and the fourth valve 64 is open to ensure air can be circulated for heating. When the electric heating device 3 is not heating, the third valve 63 is open and the fourth valve 64 is closed to ensure the exhaust gas from the burner 4 can be discharged for treatment. In another embodiment, a three-way valve can be installed at the connection between the waste gas pipe 55 and the circulation pipe to replace the third valve 63 and the fourth valve 64. The circulation pipe 54 is connected to an air supply pipe 56. The air supply pipe 56 is equipped with a fifth valve 65 for controlling the opening and closing of the air supply pipe 56. When the electric heating equipment 3 needs to replenish air during the heating process, the fifth valve 65 is opened to allow outside air to enter the fan 2 through the air supply pipe 56 to ensure sufficient air.
[0040] It should be understood that, like in Embodiment 2, this embodiment can also include multiple burners 4, multiple electric heating devices 3, and fans 2.
[0041] Example 5
[0042] like Figure 7 As shown, the difference between this embodiment and Embodiment 1 is that a flue gas heat exchanger 8 is installed on the flue gas duct 51, which can utilize the waste heat of the flue gas to heat external equipment that requires heat. It should be understood that this embodiment is also applicable to Embodiments 1 and 2.
[0043] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structure made using the contents of this utility model specification and drawings, whether directly or indirectly applied to other related technical fields, shall also be within the patent protection scope of this utility model.
Claims
1. A composite heating retort, characterized by: The application relates to a dry distillation device, which comprises a furnace body for dry distillation, an electric heating device for accepting green electricity and heating gas to generate high-temperature gas, a burner for burning coal gas to generate high-temperature gas, and a fan for pressurizing the gas and sending the gas into the electric heating device, wherein the fan is connected with the electric heating device through a pipeline, the electric heating device is connected with the burner or the furnace body through a pipeline, the burner is connected with the furnace body, the burner is connected with an air inlet channel and a coal gas channel; when the electric heating device works, the high-temperature gas required by the furnace body is generated by the electric heating device or is generated by the electric heating device and then by the burner.
2. The composite heating retort of claim 1, wherein: When the gas is flue gas, the furnace body is connected with a flue gas pipeline for collecting the flue gas, the flue gas pipeline is connected with an exhaust pipeline for exhausting the flue gas which does not need to be heated and a return pipeline for being connected with the fan, and valves are arranged on the exhaust pipeline and the return pipeline or the exhaust pipeline and the return pipeline are connected with the flue gas pipeline through a three-way valve.
3. The composite heating retort of claim 2, wherein: A flue gas heat exchanger for transferring the heat of the flue gas to external equipment is arranged on the flue gas pipeline.
4. The composite heating retort of claim 1, wherein: The electric heating device is connected with the burner or the furnace body through multiple pipelines.
5. The composite heating retort of claim 4, wherein: Flow regulating valves are arranged on the pipelines between the electric heating device and the burner or the furnace body.
6. The composite heating retort of claim 1, wherein: The electric heating device is multiple, each electric heating device is connected with the burner or the furnace body through a pipeline, and flow regulating valves are arranged on the pipelines between the fan and the electric heating devices.
7. The composite heating retort of claim 6, wherein: Each electric heating device is connected with a fan.
8. The composite heating retort according to any one of claims 4 to 7, wherein: When the gas is air, the furnace body is connected with a circulation pipeline for collecting the high-temperature gas after dry distillation, the circulation pipeline is connected with the fan, a waste gas pipeline for exhaust is arranged on the circulation pipeline, a valve for controlling circulation is arranged on the circulation pipeline, a valve for controlling exhaust is arranged on the waste gas pipeline, or a three-way valve is arranged at the connection position of the waste gas pipeline and the circulation pipeline.
9. The composite heating retort of claim 8, wherein: The fan is further connected with a gas supplement pipeline, and a valve is arranged on the gas supplement pipeline.
10. The composite heating retort of claim 1, wherein: The electric heating device is an electric heating furnace.