Pyrolysis furnace

Abstract

The utility model relates to the technical field of biomass pyrolysis. In order to improve the cooling effect and reduce the heat dissipation cost, according to the pyrolyzing furnace, in a cooling device, a baffle and a cooling pipe are fixedly installed in a cooling cavity, and the baffle is close to the two ends of the cooling cavity and blocks the two ends of the cooling cavity to form a baffle cavity communicated with the cooling pipe; in the separation cavity, the separation plate divides the separation cavity into at least two air cavities, when the number of the air cavities is an even number, the air inlet and the air outlet of the cooling device are located at the same end of the cooling cavity, and the air cavities which are located at the same end of the cooling cavity and are not communicated with the air inlet and the air outlet are sequentially communicated through communicating pipes; when the number of the air cavities is an odd number larger than 2, the air inlet and the air outlet of the cooling device are located at the two ends of the cooling cavity, and the air cavities located at the same end of the cooling cavity and not communicated with the air inlet or the air outlet are sequentially communicated through a communicating pipe. The pyrolyzing furnace is good in cooling effect and low in heat dissipation cost.

Description

[0001] This application claims the priority of the Chinese patent application filed with the China Patent Office on March 10, 2023, with application number 202310229158.5 and invention name “Pyrolysis Furnace”, the entire contents of which are incorporated by reference in this application. Technical Field

[0002] The utility model relates to the technical field of biomass pyrolysis, in particular to a pyrolysis furnace for pyrolyzing biomass. Background Art

[0003] At present, when using the existing pyrolysis furnace to burn charcoal, the combustible gas generated by pyrolysis is recovered through the recovery pipe and sent to the cooling device at the rear end for cooling. However, in the existing cooling device, the cooling pipe is a straight pipe extending from the air inlet end to the air outlet end of the cooling cavity, which has a short cooling distance and a short cooling time, poor cooling effect, and high heat dissipation cost. Utility Model Content

[0004] In order to improve the cooling effect and reduce the heat dissipation cost, the utility model proposes a pyrolysis furnace, which includes a cooling device, which includes a cooling cavity, a baffle plate and a cooling pipe, wherein the baffle plate and the cooling pipe are installed and fixed in the cooling cavity, and the baffle plate is close to the two ends of the cooling cavity and blocks the two ends of the cooling cavity to form a baffle cavity connected to the cooling pipe, and the cooling pipe is connected to the baffle cavity; a partition plate is arranged in the baffle cavity, and the partition plate divides the baffle cavity into at least two air cavities, when the baffle plate When the number of air cavities formed by the barrier cavity separation is an even number, the air inlet and the air outlet of the cooling device are located at the same end of the cooling cavity, and the air cavities located at the same end of the cooling cavity and not connected to the air inlet and the air outlet are connected in sequence through connecting pipes; when the number of air cavities formed by the barrier cavity separation is an odd number greater than 2, the air inlet and the air outlet of the cooling device are located at both ends of the cooling cavity, and the air cavities located at the same end of the cooling cavity and not connected to the air inlet or the air outlet are connected in sequence through connecting pipes. In the pyrolysis furnace of the utility model, the cooling pipes in the cooling device are connected through air cavities, which can effectively extend the length of the cooling pipes, that is, extend the cooling distance of the combustible gas flowing in the cooling device, increase the heat exchange time of the combustible gas in the cooling device, thereby effectively improving the cooling effect of the combustible gas recovered by the pyrolysis furnace of the utility model and reducing the heat dissipation cost of the recovered combustible gas.

[0005] Preferably, a plurality of partitions are provided in the barrier cavity, and the angles between any two adjacent partitions are equal. In this way, the flow rate of the combustible gas flowing in the cooling device in the pyrolysis furnace of the utility model can be ensured to be stable, thereby preventing the cooling effect of the cooling device from decreasing due to the unstable flow rate of the combustible gas. Further, the air inlet of the cooling device is connected to the inner cavity of the furnace body in the pyrolysis furnace through a recovery pipe, and the air outlet of the cooling device is connected to the gas storage tank through an exhaust pipe. In this way, the combustible gas discharged from the inner cavity of the furnace body of the pyrolysis furnace of the utility model is sent to the cooling device through the recovery pipe for cooling, and then transported to the gas storage tank through the exhaust pipe for storage for standby. Further preferably, the caliber R of the air inlet is larger than the caliber r of the air outlet. In this way, since the caliber R of the air inlet of the cooling device is larger than the caliber r of the air outlet, when in use, the retention time of the combustible gas in the cooling device can be extended, that is, the heat exchange time of the cooling device is increased, the cooling effect of the combustible gas can be improved, and the heat dissipation cost can be saved.

[0006] Preferably, an air inlet fan is provided at the air inlet, and an air outlet fan is provided at the air outlet. In this way, when in use, the air inlet fan and the air outlet fan can be used to adjust the retention time of the combustible gas in the cooling device to improve the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural schematic diagram of the pyrolysis furnace of the utility model;

[0008] Figure 2 for Figure 1 The schematic diagram of the structure of the pyrolysis furnace shown is when one end cover of the cooling device is removed. DETAILED DESCRIPTION

[0009] Next, combine Figure 1 and 2 , the pyrolysis furnace of the utility model is described in detail.

[0010] like Figure 1 and 2As shown, the pyrolysis furnace of the utility model includes a cooling device 1, which includes a cooling cavity 11, a baffle plate 12 and a cooling pipe (not shown in the figure), the baffle plate 12 and the cooling pipe are installed and fixed in the cooling cavity 11, and the baffle plate 12 is close to both ends of the cooling cavity 11 and blocks the two ends of the cooling cavity 11 to form a baffle cavity (not shown in the figure), and the cooling pipe is connected to the baffle cavity; a partition plate 13 is arranged in the baffle cavity, and the partition plate 13 divides the baffle cavity into at least two gas chambers. When the barrier cavity is divided into an even number of air cavities, the air inlet and the air outlet of the cooling device 1 are located at the same end of the cooling cavity 11, and the air cavities connected with the air inlet and the air outlet and located at the same end of the cooling cavity are connected in sequence through the connecting pipe 14; when the barrier cavity is divided into an odd number of air cavities, the air inlet and the air outlet of the cooling device 1 are located at both ends of the cooling cavity 11, and the air cavities connected with the air inlet and the air outlet and located at the same end of the cooling cavity 11 are connected in sequence through the connecting pipe 14. That is to say, when the barrier cavity is divided by the partition plate 13 to form two or more even-numbered air cavities, the air inlet and air outlet of the cooling device are located at the same end of the cooling cavity, and the air cavities located at the same end of the cooling cavity and not connected to the air inlet and air outlet are connected in sequence through the connecting tube 14; when the barrier cavity is divided by the partition plate 13 to form two or more odd-numbered air cavities, the air inlet and air outlet of the cooling device are located at both ends of the cooling cavity, and the air cavities located at the same end of the cooling cavity and not connected to the air inlet or air outlet are connected in sequence through the connecting tube 14. In the pyrolysis furnace of the utility model, the cooling pipes in the cooling device are connected through the air cavities, which at least effectively extends the length of the cooling pipes, that is, extends the cooling distance of the combustible gas flowing in the cooling device, increases the heat exchange time of the combustible gas in the cooling device, and can effectively improve the cooling effect of the combustible gas recovered by the pyrolysis furnace of the utility model, and reduce the heat dissipation cost of the recovered combustible gas. Preferably, a plurality of partition plates 13 are provided in the barrier cavity, and the angles between any two adjacent partition plates 13 are equal. In this way, the flow rate of the combustible gas flowing in the cooling device of the pyrolysis furnace of the utility model can be ensured to be stable, thereby avoiding the cooling effect of the cooling device from decreasing due to the unstable flow rate of the combustible gas. Preferably, the air inlet of the cooling device 1 is connected to the inner cavity of the furnace body in the pyrolysis furnace through the recovery pipe 2, and the air outlet of the cooling device 1 is connected to the gas storage tank 4 through the exhaust pipe 3. In this way, the combustible gas discharged from the inner cavity of the furnace body of the pyrolysis furnace of the utility model is sent to the cooling device 1 through the recovery pipe 2 for cooling, and then is transported to the gas storage tank 4 through the exhaust pipe 3 for storage and standby. Preferably, the caliber R of the air inlet is larger than the caliber r of the air outlet. In this way, since the caliber R of the air inlet of the cooling device 1 is larger than the caliber r of the air outlet, when in use, the retention time of the combustible gas in the cooling device 1 can be extended, that is, the heat exchange time of the cooling device 1 is increased, the cooling effect of the combustible gas can be improved, and the heat dissipation cost can be saved. Preferably, an air inlet fan (not shown in the figure) is provided at the air inlet, and an air outlet fan (not shown in the figure) is provided at the air outlet.In this way, when in use, the air inlet fan and the air outlet fan can be used to cooperate to adjust the residence time of the combustible gas in the cooling device 1 to improve the cooling effect.

Claims

1. A pyrolysis furnace, characterized in that: The pyrolysis furnace includes a cooling device, which includes a cooling cavity, a baffle plate and a cooling pipe, wherein the baffle plate and the cooling pipe are installed and fixed in the cooling cavity, and the baffle plate is close to both ends of the cooling cavity and blocks at both ends of the cooling cavity to form a baffle cavity connected with the cooling pipe; a partition plate is arranged in the baffle cavity, and the partition plate divides the baffle cavity into at least two air cavities, and when the number of the air cavities formed by the baffle cavity is an even number, the air inlet and the air outlet of the cooling device are located at the same end of the cooling cavity, and the air cavities located at the same end of the cooling cavity and not connected with the air inlet and the air outlet are connected in sequence through the connecting pipe; when the number of the air cavities formed by the baffle cavity is an odd number greater than 2, the air inlet and the air outlet of the cooling device are located at both ends of the cooling cavity, and the air cavities located at the same end of the cooling cavity and not connected with the air inlet or the air outlet are connected in sequence through the connecting pipe.

2. The pyrolysis furnace according to claim 1, characterized in that: A plurality of the partition plates are arranged in the barrier cavity, and the angles between any two adjacent partition plates are equal.

3. The pyrolysis furnace according to claim 2, characterized in that: The air inlet of the cooling device is communicated with the furnace body cavity in the pyrolysis furnace through a recovery pipe, and the air outlet of the cooling device is communicated with the gas storage tank through an exhaust pipe.

4. The pyrolysis furnace according to claim 3, characterized in that: The diameter R of the air inlet is greater than the diameter r of the air outlet.

5. The pyrolysis furnace according to claim 3, characterized in that: An air inlet fan is arranged at the air inlet, and an air outlet fan is arranged at the air outlet.

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