A carbonization furnace having a combustible gas recovery system

Abstract

This utility model belongs to the field of carbonization furnace technology, specifically, it relates to a carbonization furnace with a combustible gas recovery system, including a furnace body, a furnace chamber, a tar pipe, and a purification device. The front side of the furnace body is provided with a fuel port, and the rear side of the furnace body is provided with a waste gas pipe. The furnace chamber is fixedly located on the upper side of the furnace body. The right side of the furnace chamber is provided with a feeding port and a furnace door. One end of the tar pipe is connected to the furnace chamber, and the other end is connected to the furnace body. The purification device is located on the left side of the furnace chamber and includes a shell, an air inlet pipe, a filter box, a first pipe, a washing box, a second pipe, an adsorption box, and an air outlet pipe. This device treats the large amount of flue gas generated during the high-temperature heating and dry distillation of charcoal through the filter box, washing box, and adsorption box. The flue gas contains combustible gases such as carbon monoxide, oxygen, nitrogen, methane, and propane. After purification by spraying and adsorption, the flue gas is discharged into the furnace body, realizing the recovery and utilization of waste gas and avoiding pollution to the environment and atmosphere.

Description

Technical Field

[0001] This utility model belongs to the field of carbonization furnace technology, specifically, it relates to a carbonization furnace with a combustible gas recovery system. Background Technology

[0002] Carbonization furnaces are widely used in biomass energy conversion, solid waste treatment, and charcoal production. For example, in charcoal production, logs are placed in a carbonization furnace and heated using a dry distillation process. The logs gradually heat up inside the furnace, and under high-temperature, air-isolated conditions, they pyrolyze to form charcoal. However, this high-temperature dry distillation process generates a large amount of flue gas, containing combustible gases such as carbon monoxide, oxygen, nitrogen, methane, and propane. Most of these gases are purified by spraying and then discharged into the environment, unable to be recovered or reused. This results in wasted thermal energy and pollution of the environment and atmosphere. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a new technical solution:

[0004] A carbonization furnace with a combustible gas recovery system includes a furnace body, a furnace chamber, a tar pipe, and a purification device. The furnace body has a fuel inlet on the front and an exhaust gas pipe on the rear. The furnace chamber is fixedly located on the upper side of the furnace body. A feeding inlet and a furnace door are located on the right side of the furnace chamber, and the furnace door and feeding inlet are matched. One side of the furnace door is hinged to the furnace chamber, and the other side has a latch. The furnace chamber has a matching groove for the latch, and the groove and latch engage with each other. One end of the tar pipe is connected to the furnace chamber, and the other end is connected to the furnace body. The purification device is installed... On the left side of the furnace, the purification device includes an outer shell, an air inlet pipe, a filter box, a first pipe, a washing box, a second pipe, an adsorption box, and an air outlet pipe. The outer shell is fixedly connected to the left side of the furnace. The filter box, washing box, and adsorption box are all fixedly installed inside the outer shell. The air inlet pipe passes through the outer shell and connects the top of the furnace and the top of the filter box. The first pipe connects the bottom of the filter box and the bottom of the washing box. The second pipe connects the top of the washing box and the top of the adsorption box. The air outlet pipe passes through the outer shell and connects the bottom of the adsorption box and the furnace body.

[0005] Furthermore, the furnace chamber is a hollow cylinder, the lower part of the furnace body is a hollow cuboid, and the upper part has an arc that matches the furnace chamber. The hollow cylindrical furnace chamber can adapt to the shape of the wood and put in more wood that needs to be carbonized. The arc on the upper part of the furnace body that matches the furnace chamber can easily fix the furnace chamber and increase the contact area between the furnace body and the furnace chamber, so that the wood in the furnace chamber can be carbonized faster.

[0006] Furthermore, the inner wall of the furnace is provided with an insulation layer to keep the materials inside the furnace warm.

[0007] Furthermore, the fuel inlet is equipped with a cover. When the fuel inlet is used for wood carbonization, fuel is added into the furnace to raise the temperature inside the furnace. The cover is used to temporarily close the fuel inlet to prevent the fly ash from the combustion from polluting other operating environments.

[0008] Furthermore, one-way valves are installed on the tar pipe and the gas outlet pipe to prevent oxygen from entering the furnace chamber through the furnace body, which would affect the carbonization of the wood. At the same time, combustible gas in the furnace chamber can be introduced into the furnace body for combustion to achieve the recovery and utilization of waste gas.

[0009] This utility model also includes other devices or components that enable the carbonization furnace with a combustible gas recovery system to operate normally, all of which are conventional technologies in the field. Furthermore, the insulation layer and one-way valve not specified in this utility model also employ conventional technologies in the field.

[0010] The working principle of this utility model is as follows: when using this device, the wood to be carbonized is placed into the furnace, the furnace door is closed, fuel is ignited in the furnace to heat the furnace, and the combustible gas produced by the oxygen-deficient combustion of the wood passes through the filter box, washing box and adsorption box to remove solid impurities and toxic gases, and the remaining combustible gases such as H2, CO and CH4 are passed into the furnace for combustion, thereby realizing the recovery of combustible gases.

[0011] The beneficial effects of this invention are that this device treats the large amount of flue gas generated during the high-temperature heating and dry distillation of charcoal through a filter box, a washing box, and an adsorption box. The flue gas contains combustible gases such as carbon monoxide, oxygen, nitrogen, methane, and propane. After purification through spraying and adsorption, the flue gas is discharged into the furnace, realizing the recycling of waste gas and avoiding pollution to the environment and atmosphere. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the right side of this utility model.

[0015] Figure 3 This is a schematic diagram of the left side structure of this utility model. Detailed Implementation

[0016] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0017] Example

[0018] like Figures 1-3 As shown, this utility model provides a carbonization furnace with a combustible gas recovery system, including a furnace body 1, a furnace chamber 2, a tar pipe 3, and a purification device. The furnace body 1 has a fuel inlet 4 on its front side and an exhaust gas pipe 5 on its rear side. The furnace chamber 2 is fixedly installed on the upper side of the furnace body 1. A feeding inlet 6 and a furnace door 7 are located on the right side of the furnace chamber 2, and the furnace door 7 and the feeding inlet 6 are matched. One side of the furnace door 7 is hinged to the furnace chamber 2, and the other side has a latch 8. The furnace chamber 2 has a matching groove (not shown in the figure) that engages with the latch 8. One end of the tar pipe 3 is connected to the furnace chamber 2, and the other end is connected to the furnace body 1. The purification device is installed in the furnace chamber 2. On the left side, the purification device includes an outer shell 18, an air inlet pipe 9, a filter box 10, a first pipe 11, a washing box 12, a second pipe 13, an adsorption box 14, and an air outlet pipe 15. The outer shell 18 is fixedly connected to the left side of the furnace chamber 2. The filter box 10, the washing box 12, and the adsorption box 14 are all fixedly installed inside the outer shell 18. The air inlet pipe 9 passes through the outer shell 18 and connects the top of the furnace chamber 1 and the top of the filter box 10. The first pipe 11 connects the bottom of the filter box 10 and the bottom of the washing box 12. The second pipe 13 connects the top of the washing box 12 and the top of the adsorption box 14. The air outlet pipe 15 passes through the outer shell 18 and connects the bottom of the adsorption box 14 and the furnace body 1.

[0019] As a further measure of this utility model, the furnace chamber 2 is a hollow cylinder, and the lower part of the furnace body 1 is a hollow cuboid, with an arc on the upper part that matches the furnace chamber 2. The hollow cylindrical furnace chamber 2 can adapt to the shape of the wood, allowing more wood to be carbonized to be placed inside. The arc on the upper part of the furnace body 1 that matches the furnace chamber 2 facilitates the fixing of the furnace chamber 2 and increases the contact area between the furnace body 1 and the furnace chamber 2, enabling the wood inside the furnace chamber 2 to carbonize more quickly. The inner side of the furnace wall of the furnace chamber 2 is provided with a heat insulation layer for heat preservation of the furnace chamber 2. The internal materials are insulated; the fuel port 4 is equipped with a cover 16. When the wood is carbonized, fuel is added to the furnace body 1 to raise the temperature inside the furnace chamber 2. The cover 16 is used to temporarily close the fuel port 4 to prevent the fly ash from the combustion from polluting other operating environments; the tar pipe 3 and the gas outlet pipe 15 are equipped with one-way valves 17 to prevent oxygen from entering the furnace chamber 2 from the furnace body 1, which would affect the carbonization of the wood. At the same time, the combustible gas in the furnace chamber 2 can be introduced into the furnace body 1, and the combustible gas is burned to realize the recovery and utilization of waste gas.

[0020] The working principle of this utility model is as follows: when using this device, the wood to be carbonized is placed into the furnace chamber 2, the furnace door 7 is closed, the fuel is ignited in the furnace body 1 to heat the furnace chamber 2, and the combustible gas produced by the oxygen-deficient combustion of the wood passes through the filter box 10, the washing box 12 and the adsorption box 14 to remove solid impurities and toxic gases, and the remaining combustible gases such as H2, CO and CH4 are introduced into the furnace body 1 for combustion, thereby realizing the recovery of combustible gases.

[0021] The embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A carbonization furnace with a combustible gas recovery system, comprising a furnace body, a furnace chamber, a tar pipe, and a purification device, characterized in that: The furnace body has a fuel inlet on the front and an exhaust pipe on the rear. The furnace chamber is fixedly located on the upper side of the furnace body. The furnace chamber has a feeding inlet and a furnace door on the right side. The furnace door and the feeding inlet are matched. One side of the furnace door is hinged to the furnace chamber, and the other side has a buckle. The furnace chamber has a groove that matches the buckle. The groove and the buckle are engaged with each other. One end of the tar pipe is connected to the furnace chamber, and the other end is connected to the furnace body. The purification device is located on the left side of the furnace chamber and includes a shell, an air inlet pipe, a filter box, a first pipe, a washing box, a second pipe, an adsorption box, and an exhaust pipe. The shell is fixedly connected to the left side of the furnace chamber. The filter box, washing box, and adsorption box are all fixedly located inside the shell. The air inlet pipe passes through the shell and connects the top of the furnace chamber and the top of the filter box. The first pipe connects the bottom of the filter box and the bottom of the washing box. The second pipe connects the top of the washing box and the top of the adsorption box. The exhaust pipe passes through the shell and connects the bottom of the adsorption box and the furnace body.

2. A carbonization furnace with a combustible gas recovery system according to claim 1, characterized in that: The furnace chamber is a hollow cylinder, the lower part of the furnace body is a hollow cuboid, and the upper part is provided with an arc that matches the furnace chamber.

3. A carbonization furnace with a combustible gas recovery system according to claim 1, characterized in that: The furnace wall has an insulation layer on the inner side.

4. A carbonization furnace with a combustible gas recovery system according to claim 1, characterized in that: The fuel inlet is covered.

5. A carbonization furnace with a combustible gas recovery system according to claim 1, characterized in that: One-way valves are installed on the tar pipe and the gas outlet pipe.

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