Hot-air heating carbonization furnace

Abstract

The utility model belongs to the technical field of carbonization furnace, specifically relates to a hot -blast heating carbonization furnace, including combustion furnace and heat exchange device, heat exchange device fixedly arranged at the upside of combustion furnace, heat exchange device includes outer tube, coil pipe, inner tube, air inlet pipe and air outlet pipe, and the spiral channel is formed to coil pipe coiled arrangement in the annular space formed by outer tube and inner tube, the device when heat exchange, gas enters the inner tube through the air inlet pipe, is preheated with the temperature of inner tube first, enters the spiral channel again, carries out heat exchange with flue gas through the pipe wall of coil pipe, reduces energy consumption, accords with environmental protection requirement, has improved the heat exchange efficiency of gas, has saved energy consumption and cost.

Description

Technical Field

[0001] This utility model belongs to the field of carbonization furnace technology, specifically, it relates to a hot air heated carbonization furnace. Background Technology

[0002] A hot blast stove is a coal-fired stove that can provide hot air. Compared with traditional steam boilers, hot blast stoves have higher thermal efficiency and energy-saving effects, and can replace some boiler systems in industrial production, reducing energy consumption and costs. With increasing environmental awareness, energy conservation and emission reduction have become regulations that many enterprises must comply with. Using hot blast stoves with good energy efficiency can reduce emissions and energy consumption, meeting environmental protection requirements. However, common hot blast stoves have low heat exchange efficiency, resulting in high energy consumption and costs. Therefore, there is an urgent need to provide a heat exchange structure for hot blast stoves with high heat exchange efficiency. Utility Model Content

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

[0004] A hot air heated carbonization furnace includes a combustion furnace and a heat exchange device. The heat exchange device is fixedly installed on the upper side of the combustion furnace. The heat exchange device includes an outer cylinder, a coil, an inner cylinder, an air inlet pipe, and an air outlet pipe. The outer cylinder and the inner cylinder are hollow cylinders with open lower ends. The outer cylinder is coaxially sleeved on the outside of the inner cylinder. The upper part of the inner cylinder is fixedly connected to the inner top surface of the outer cylinder. The lower sides of both the outer cylinder and the inner cylinder are fixedly connected to the top surface of the combustion furnace.

[0005] The coil is wound around the annular space formed by the outer and inner cylinders to form a spiral channel. The inner and outer sides of the coil are fixedly connected to the outer and inner cylinders, respectively. The lower end of the coil extends to the inner side of the combustion furnace, and the upper end of the coil extends to the outer side of the outer cylinder. The top side wall of the inner cylinder has an opening that is connected to the spiral channel. The inlet pipe and outlet pipe are located on the lower side of the heat exchange device. The inlet pipe passes through the outer cylinder and extends into the interior of the inner cylinder, and the outlet pipe passes through the outer cylinder and is connected to the spiral channel.

[0006] Furthermore, both the outer and inner cylinders are equipped with insulation layers to keep the flue gas in the coil and the gas in the spiral channel warm, while increasing the heat transfer efficiency of both. The gas entering the inner cylinder through the inlet pipe is preheated in the inner cylinder before entering the spiral channel, where it exchanges heat with the flue gas through the coil wall.

[0007] Furthermore, the inlet pipe and outlet pipe are equipped with inlet valves and outlet valves respectively on the pipes located on the outside of the outer cylinder, and the coil is equipped with a flue gas valve on the pipe located on the top outside of the outer cylinder. The inlet valve and outlet valve are used to control the entry and exit of external gas, and the flue gas valve is used to control the discharge of flue gas. The flue gas that has completed heat exchange enters the subsequent gas treatment steps through the flue gas valve, and the gas that has completed heat exchange enters the furnace chamber where the material to be carbonized is stored through the outlet valve for carbonization of the material.

[0008] Furthermore, an intake fan is installed on the pipe located outside the outer cylinder of the air intake pipe, and an exhaust fan is installed on the pipe located outside the top of the outer cylinder of the coil. The intake fan is used to draw gas into the air intake pipe, and the exhaust fan is used to expel the flue gas from the coil.

[0009] Furthermore, the coil is made of a heat-conducting metal, and heat dissipation fins are provided on the upper and lower sides of the coil. The heat dissipation fins are used to assist in the heat dissipation of the flue gas in the coil and increase the heat exchange rate between the gas and the flue gas in the spiral channel.

[0010] This utility model also includes other devices or components that enable the hot air heated carbonization furnace to operate normally, all of which are conventional techniques in the art. Furthermore, the insulation layer and heat dissipation fins not specified in this utility model all employ conventional techniques in the art.

[0011] The working principle of this utility model is as follows: when using this device, the fuel is ignited in the combustion furnace. After the flue gas reaches a certain temperature, the flue gas valve is opened to draw the flue gas into the coil. The inlet valve and outlet valve are opened to draw the gas into the inner cylinder through the inlet pipe. After passing through the spiral pipe, the gas is discharged from the outlet pipe, thus completing the heat exchange of the gas and obtaining gas with a higher temperature.

[0012] The beneficial effects of this invention are that, during heat exchange, the gas enters the inner cylinder through the inlet pipe, is preheated by the temperature of the inner cylinder, and then enters the spiral channel, where it exchanges heat with the flue gas through the wall of the coil. This reduces energy consumption, meets environmental protection requirements, improves the heat exchange efficiency of the gas, and saves energy and costs. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model. Detailed Implementation

[0015] 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.

[0016] Example

[0017] like Figure 1As shown, the present invention provides a hot air heating carbonization furnace, including a combustion furnace 1 and a heat exchange device. The heat exchange device is fixedly installed on the upper side of the combustion furnace 1. The heat exchange device includes an outer cylinder 2, a coil 3, an inner cylinder 4, an air inlet pipe 5, and an air outlet pipe 6. The outer cylinder 2 and the inner cylinder 4 are hollow cylinders with open lower ends. The outer cylinder 2 is coaxially sleeved on the outer side of the inner cylinder 4. The upper part of the inner cylinder 4 is fixedly connected to the inner top surface of the outer cylinder 2. The lower sides of the outer cylinder 2 and the inner cylinder 4 are both fixedly connected to the top surface of the combustion furnace 1.

[0018] The coil 3 is coiled and arranged in the annular space formed by the outer cylinder 2 and the inner cylinder 4 to form a spiral channel 7. The inner and outer sides of the coil 3 are fixedly connected to the outer cylinder 2 and the inner cylinder 4 respectively. The lower end of the coil 3 extends to the inner side of the combustion furnace 1, and the upper end of the coil 3 extends to the outer side of the outer cylinder 2. The top side wall of the inner cylinder 4 is provided with an opening 8, which is connected to the spiral channel 7. The air inlet pipe 5 and the air outlet pipe 6 are arranged on the lower side of the heat exchange device. The air inlet pipe 5 passes through the outer cylinder 2 and extends into the interior of the inner cylinder 4. The air outlet pipe 6 passes through the outer cylinder 2 and is connected to the spiral channel 7.

[0019] As a further measure of this utility model, both the outer cylinder 2 and the inner cylinder 4 are provided with a heat insulation layer (not shown in the figure) on their inner walls to insulate the flue gas in the coil 3 and the gas in the spiral channel 7, while increasing the heat transfer efficiency of both. The gas entering the inner cylinder 4 through the inlet pipe 5 is preheated in the inner cylinder 4 before entering the spiral channel 7, where it exchanges heat with the flue gas through the pipe wall of the coil 3. The inlet pipe 5 and the outlet pipe 6 are respectively provided with an inlet valve 9 and an outlet valve (not shown in the figure) on the pipes outside the outer cylinder 2, and a flue gas valve 10 is provided on the pipe of the coil 3 outside the outer cylinder 2. The inlet valve 9 and the outlet valve are used to control the entry and exit of external gas, and the flue gas valve 10 is used for... The flue gas is controlled to be discharged. The flue gas that has completed heat exchange enters the subsequent gas treatment step through the flue gas valve 10. The gas that has completed heat exchange enters the furnace chamber where the material to be carbonized is stored through the exhaust valve for carbonization of the material. An intake fan 11 is installed on the pipe outside the outer cylinder 2 of the intake pipe 5. An exhaust fan 12 is installed on the pipe outside the top of the outer cylinder 2 of the coil 3. The intake fan 11 is used to draw gas into the intake pipe 5, and the exhaust fan 12 is used to exhaust the flue gas in the coil 3. The coil 3 is a heat-conducting metal coil 3, and the outer surface of the coil 3 has heat dissipation fins 13. The heat dissipation fins 13 are used to assist in the heat dissipation of the flue gas in the coil 3 and increase the heat exchange rate between the gas and the flue gas in the spiral channel 7.

[0020] The working principle of this utility model is as follows: When this device is used, the fuel is ignited in the combustion furnace 1. After the flue gas reaches a certain temperature, the flue gas valve 10 is opened to draw the flue gas into the coil 3. The inlet valve 9 and the outlet valve are opened to draw the gas into the inner cylinder 4 from the inlet pipe 5. After passing through the spiral pipe 7, the gas is discharged from the outlet pipe 6, thus completing the heat exchange of the gas and obtaining gas with a higher temperature.

[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 hot-air heating carbonization furnace comprising a combustion furnace and a heat exchange device, characterized by: The heat exchange device is fixedly installed on the upper side of the combustion furnace. The heat exchange device includes an outer cylinder, a coil, an inner cylinder, an inlet pipe, and an outlet pipe. The outer cylinder and the inner cylinder are hollow cylinders with open lower ends. The outer cylinder is coaxially sleeved on the outside of the inner cylinder. The upper part of the inner cylinder is fixedly connected to the inner top surface of the outer cylinder. The lower sides of both the outer cylinder and the inner cylinder are fixedly connected to the top surface of the combustion furnace. The coil is wound around the annular space formed by the outer and inner cylinders to form a spiral channel. The inner and outer sides of the coil are fixedly connected to the outer and inner cylinders, respectively. The lower end of the coil extends to the inner side of the combustion furnace, and the upper end of the coil extends to the outer side of the outer cylinder. The top side wall of the inner cylinder has an opening that is connected to the spiral channel. The air inlet pipe and the air outlet pipe are located on the lower side of the heat exchange device. The air inlet pipe passes through the outer cylinder and extends into the interior of the inner cylinder, and the air outlet pipe passes through the outer cylinder and is connected to the spiral channel.

2. A hot-air heating carbonization furnace according to claim 1, characterized by: Both the outer and inner cylinders are provided with insulation layers on their inner walls.

3. A hot-air heating carbonization furnace according to claim 1, characterized by: The air inlet pipe and air outlet pipe are respectively equipped with an air inlet valve and an air outlet valve on the pipe located on the outside of the outer cylinder, and the coil is equipped with a flue gas valve on the pipe located on the outside of the top of the outer cylinder.

4. A hot-air heating carbonization furnace according to claim 1, characterized by: An air intake fan is installed on the pipe located on the outside of the outer cylinder, and an air outlet fan is installed on the pipe located on the top outside of the outer cylinder.

5. A hot-air heating carbonization furnace according to claim 1, characterized by: The coil is a heat-conducting metal coil, and the outer surface of the coil is provided with heat dissipation fins.

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