Carbonization furnace flue gas recycling equipment

Abstract

The utility model relates to the technical field of carbonization furnaces, in particular to carbonization furnace flue gas recycling equipment, which comprises crushing and drying equipment, a conveying system, a carbonization furnace, a combustion chamber, a flue gas pipeline and tail gas treatment equipment, a combustion chamber is arranged below the carbonization furnace, the combustion chamber and the crushing and drying equipment are connected with the carbonization furnace through flue gas pipelines, and the crushing and drying equipment is connected with tail gas treatment equipment through a pipeline. According to the equipment, different requirements of different carbonization raw materials on crushing and drying are met, and the conveying system is in transmission connection with a discharging opening of the crushing and drying equipment and a feeding opening of the carbonization furnace, so that dried particle materials can be conveyed to the carbonization furnace in real time; in addition, flue gas generated by the carbonization furnace serves as fuel to be conveyed to the carbonization furnace and the smashing and drying device, energy consumption of the device is reduced, energy is saved, the carbonization furnace can conduct carbonization treatment continuously, and continuous production is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of carbonization furnace technology, in particular to a carbonization furnace smoke recycling device. Background Art

[0002] Carbonization refers to the reaction process of heating and decomposing solid or organic matter in an airtight condition or a method of heating solid matter to produce liquid or gaseous products. Usually sawdust, fruit shells, straw, rice straw, etc. can be carbonized, which brings considerable environmental and economic benefits. Most of the existing carbonization equipment uses fossil energy as the main heat source, and the flue gas produced by the carbonized raw materials at high temperatures cannot be recycled, which makes the energy consumption of the carbonization furnace high. In addition, the continuous carbonization furnace can only carbonize particulate materials, and according to the different carbonized raw materials, the raw materials need to be dried to different degrees before entering the carbonization furnace. Therefore, it is necessary to develop a carbonization equipment that uses the flue gas of the carbonization furnace as energy and integrates crushing, drying and carbonization. Summary of the invention

[0003] In order to overcome the problems of high energy consumption of carbonization furnaces, inability to recycle smoke generated by carbonization, and differences in the requirements of carbonization raw materials for crushing and drying processes, the utility model provides a carbonization furnace smoke recycling device.

[0004] The utility model provides a carbonization furnace flue gas recycling device that adopts the following technical solutions:

[0005] A carbonization furnace flue gas recycling device comprises a pulverizing and drying device, a conveying system, a carbonization furnace, a combustion chamber, a flue gas duct and an exhaust gas treatment device. The pulverizing and drying device is provided with a discharge port at the bottom, the carbonization furnace is provided with a carbonization inlet at the top, the conveying system conveys and connects the discharge port of the pulverizing and drying device and the carbonization inlet of the carbonization furnace, a combustion chamber is provided below the carbonization furnace, the combustion chamber and the pulverizing and drying device are connected to the carbonization furnace via a flue gas duct, and the pulverizing and drying device duct is connected to the exhaust gas treatment device.

[0006] By adopting the above technical scheme, by setting up crushing and drying equipment, a conveying system and a carbonization furnace, on the one hand, the different requirements of different carbonization raw materials for crushing and drying are solved, and on the other hand, the conveying system transmission connects the discharge port of the crushing and drying equipment with the feed port of the carbonization furnace, and can transport the dried particulate material to the carbonization furnace in real time; in addition, the setting of the flue gas duct enables the flue gas generated by the carbonization furnace to be transported to the carbonization furnace and the crushing and drying equipment as fuel, which not only reduces the energy consumption of the carbonization furnace and the crushing and drying equipment and saves energy, but also the carbonization furnace can continuously perform carbonization treatment to realize a continuous production process.

[0007] Preferably, the flue gas duct includes a first flue gas duct and a second flue gas duct, one end of the first flue gas duct and one end of the second flue gas duct are both connected to the carbonization furnace, the other end of the first flue gas duct is connected to the combustion chamber, and the other end of the second flue gas duct is connected to the crushing and drying equipment.

[0008] By adopting the above technical scheme, by setting the first flue gas duct and the second flue gas duct, the flue gas generated by the carbonization furnace is transported to the carbonization furnace combustion chamber and the pulverizing and drying equipment respectively, which not only realizes the reuse of the flue gas from the carbonization furnace, but also solves the fuel problem of the carbonization furnace and the pulverizing and drying equipment, thereby reducing energy consumption; in addition, the separate transportation of the flue gas can better control the different supply of fuel for the carbonization furnace and the pulverizing and drying equipment.

[0009] Preferably, the pulverizing and drying equipment includes a discharge port, a pulverizing chamber, a hot air furnace, a fan and an air outlet, the discharge port is opened at the lower part of the pulverizing chamber, a conveying system is arranged below the discharge port, the second flue gas duct is connected to the hot air furnace, the hot air furnace is connected to the pulverizing chamber duct, a fan is fixedly installed on the side of the hot air furnace away from the pulverizing chamber, an air outlet is opened on the top of the pulverizing chamber, and the air outlet is connected to the exhaust gas treatment equipment duct.

[0010] By adopting the above technical solution, by connecting a hot air furnace at the end of the pulverizing chamber, the large pieces of material can be chopped into particles that meet the requirements of the carbonization furnace and the material can be dried at the same time, avoiding the work of multiple process transportation. In addition, a fan is provided at the end of the hot air furnace, which can continuously deliver hot air to the pulverizing chamber, distribute the hot air to the entire pulverizing chamber, ensure that the material is evenly heated, thereby accelerating the drying speed and further improving the working efficiency of the equipment.

[0011] Preferably, the carbonization furnace includes a carbonization inlet, a carbonization chamber and a smoke outlet, the carbonization inlet is arranged at the top of the carbonization chamber, a combustion chamber is arranged below the carbonization chamber, and a smoke outlet is opened at the top of the carbonization furnace, and the smoke outlet is connected to the first smoke duct and the second smoke duct.

[0012] Preferably, the exhaust gas treatment equipment includes an induced draft fan, a spray tower and a discharge pipe, the air outlet of the crushing and drying equipment and the spray tower are connected through an induced draft fan pipeline, the lower side of the spray tower is connected to the induced draft fan, and the top of the spray tower is fixedly connected to the discharge pipe.

[0013] By adopting the above technical solution and setting the tail gas treatment equipment at the outlet of the pulverizing and drying equipment, the waste gas generated by the pulverizing and drying equipment can be sucked into the spray tower through the induced draft fan, and the liquid in the spray tower is used to absorb the organic matter in the waste gas, so as to achieve the purpose of removing pollutants, thereby reducing the pollution of the waste gas, ensuring people's health, and protecting the environment and ecology.

[0014] Preferably, a flow regulating valve is provided at the connection between the hot blast furnace and the grinding chamber pipeline.

[0015] By adopting the above technical solution, a flow regulating valve is set at the pipeline connection between the hot air furnace and the grinding chamber, and the hot air volume and temperature in the grinding chamber can be adjusted by controlling the flow regulating valve, thereby meeting the requirements of different materials for the drying process.

[0016] Preferably, a valve is provided on the second flue gas duct.

[0017] By adopting the above technical solution, by setting a valve on the second flue gas duct, the opening and closing of the second flue gas duct can be controlled. When the material drying is completed, the carbonization flue gas can be stopped from being transported to the hot blast furnace, so that more carbonization flue gas can be used for carbonizing materials, thereby improving the carbonization efficiency.

[0018] In summary, the utility model has the following beneficial effects:

[0019] 1. The utility model is a carbonization furnace flue gas recycling device, which solves the different requirements of different carbonization raw materials for crushing and drying by arranging crushing and drying equipment, a conveying system and a carbonization furnace. On the other hand, the conveying system drives and connects the discharge port of the crushing and drying equipment with the feed port of the carbonization furnace, and can convey the dried particulate material to the carbonization furnace in real time; in addition, the arrangement of the flue gas pipeline enables the flue gas generated by the carbonization furnace to be conveyed to the carbonization furnace and the crushing and drying equipment as fuel, which not only reduces the energy consumption of the carbonization furnace and the crushing and drying equipment and saves energy, but also enables the carbonization furnace to continuously perform carbonization treatment to realize a continuous production process.

[0020] 2. The utility model is a carbonization furnace flue gas recycling device, which transmits the flue gas generated by the carbonization furnace to the carbonization furnace combustion chamber and the crushing and drying equipment respectively by setting a first flue gas duct and a second flue gas duct, which not only realizes the recycling of the flue gas from the carbonization furnace, solves the fuel problem of the carbonization furnace and the crushing and drying equipment, and reduces energy consumption, but also can reduce dust and waste gas emissions in the carbonization process, and improves environmental protection benefits; in addition, the separate transportation of flue gas can better control the different supply of fuel for the carbonization furnace and the crushing and drying equipment.

[0021] 3. The utility model is a carbonization furnace flue gas recycling device, which can absorb the waste gas generated by the crushing and drying equipment into the spray tower through the induced draft fan by arranging the tail gas treatment equipment at the outlet of the crushing and drying equipment, and utilize the liquid in the spray tower to absorb the organic matter in the waste gas to achieve the purpose of removing pollutants, thereby reducing the pollution of the waste gas, ensuring people's health, and protecting the environment and ecology.

[0022] 4. The utility model is a carbonization furnace flue gas recycling device, in which a flow regulating valve is arranged at the pipe connection between the hot blast furnace and the grinding chamber, and the air volume and temperature in the drying barrel can be adjusted by controlling the flow regulating valve, so as to meet the requirements of different materials for the drying process; a valve is arranged on the second flue gas pipe, and the opening and closing of the second flue gas pipe can be controlled. When the material is dried, the valve is closed to stop supplying carbonized flue gas to the hot blast furnace, so that more carbonized flue gas can be used for combustion in the combustion chamber, thereby improving the carbonization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of a carbonization furnace flue gas recycling device;

[0024] Figure 2 This is a schematic diagram of the crushing and drying equipment of the carbonization furnace flue gas recycling equipment;

[0025] Figure 3 A schematic diagram of a carbonization furnace of a carbonization furnace flue gas recycling device;

[0026] Figure 4 This is a schematic diagram of the exhaust gas treatment equipment of the carbonization furnace flue gas recycling equipment.

[0027] 1. Crushing and drying equipment; 11. Discharge port; 12. Crushing chamber; 13. Hot air furnace; 14. Fan; 15. Air outlet; 16. Flow regulating valve; 2. Conveying system; 3. Carbonization furnace; 31. Carbonization inlet; 32. Carbonization chamber; 33. Flue gas outlet; 4. Combustion chamber; 5. Flue gas duct; 51. First flue gas duct; 52. Second flue gas duct; 53. Valve; 6. Tail gas treatment equipment; 61. Draft fan; 62. Spray tower; 63. Discharge pipe. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-4 The utility model is described in further detail.

[0029] This embodiment discloses a carbonization furnace flue gas recycling device. Figure 1-Figure 4, including a crushing and drying device 1, a conveying system 2, a carbonization furnace 3, a combustion chamber 4, a flue gas duct 5 and an exhaust gas treatment device 6. The crushing and drying device 1 includes a discharge port 11, a crushing chamber 12, a hot air furnace 13, a fan 14 and an air outlet 15. The discharge port 11 is opened at the lower part of the crushing chamber 12. The hot air furnace 13 is connected to the crushing chamber 12 by a pipeline. The fan 14 is fixedly installed on the side of the hot air furnace 13 away from the crushing chamber 12. The material to be carbonized first enters the crushing chamber 12 and is chopped into particles that meet the requirements of the carbonization furnace 3. At the same time, the hot air is burned in the hot blast furnace 13 to generate hot air. Under the action of the fan 14, the hot air is continuously transported from the hot blast furnace 13 through the pipeline to the crushing chamber 12, so that the material to be carbonized can be crushed and dried at the same time, avoiding the work of transporting in multiple processes and improving the work efficiency. An air outlet 15 is provided on the top of the crushing chamber 12, and the air outlet 15 is connected to the exhaust gas treatment device 6 pipeline to purify the high-temperature exhaust gas generated in the crushing chamber 12. A conveying system 2 is provided below the discharge port 11 of the crushing and drying equipment 1. The system 2 is connected to the discharge port 11 of the crushing and drying equipment 1 and the carbonization furnace 3, so that the crushed and dried materials to be carbonized can be transported to the carbonization furnace 3 for carbonization; a combustion chamber 4 is arranged below the carbonization furnace 3, and the combustion chamber 4 serves as a heat source for the carbonization furnace 3, and its function is to provide high-temperature heat energy to the carbonization furnace 3. The carbonization furnace 3 includes a carbonization inlet 31, a carbonization chamber 32 and a flue gas outlet 33. The carbonization inlet 31 is arranged at the top of the carbonization chamber 32, and the combustion chamber 4 is arranged below the carbonization chamber 32. The fuel in the combustion chamber 4 is heated by the combustion of the carbonization chamber 32. After combustion, heat is generated and the heat energy is conducted to the carbonization chamber 32, so that the material inside the carbonization chamber 32 is subjected to high-temperature carbonization treatment. A smoke outlet 33 is provided on the top of the carbonization furnace 3, and the smoke outlet 33 is connected to the smoke pipe 5. The material in the carbonization chamber 32 generates smoke after carbonization, and the smoke is transported from the smoke outlet 33 through the smoke pipe 5 to the combustion chamber 4 and the hot air furnace 13 as a combustion raw material, which not only realizes the reuse of the smoke from the carbonization furnace 3, but also solves the fuel problem of the carbonization furnace 3 and the crushing and drying equipment 1, thereby reducing energy consumption.

[0030] Among them, Figure 1-Figure 3 As shown, the flue gas duct 5 includes a first flue gas duct 51 and a second flue gas duct 52. The first flue gas duct 51 connects the carbonization furnace 3 and the combustion chamber 4, and the second flue gas duct 52 connects the carbonization furnace 3 and the hot blast furnace 13. The carbonized flue gas is transported in two ducts, which can better control the different supply of fuel to the combustion chamber 4 and the hot blast furnace 13. In order to better control the transportation of flue gas, a valve 53 is arranged on the second flue gas duct 52. The valve 53 is preferably a shut-off valve. When the material is dried and transported to the carbonization furnace 3 through the conveying system 2, the carbonized flue gas can be stopped from being transported to the hot blast furnace 13, so that more carbonized flue gas can be used for carbonizing materials, thereby improving the carbonization efficiency.

[0031] Among them, Figure 2 and Figure 4As shown, the tail gas treatment equipment 6 includes an induced draft fan 61, a spray tower 62 and an exhaust pipe 63. The air outlet 15 of the crushing and drying equipment 1 and the spray tower 62 are connected through the induced draft fan 61 pipeline. The lower side of the spray tower 62 is connected to the induced draft fan 61, and the top of the spray tower 62 is fixedly connected to the exhaust pipe 63. The material is crushed and dried in the crushing chamber 12, which will produce high-temperature exhaust gas. The induced draft fan 61 extracts the generated high-temperature exhaust gas from the crushing chamber 12 through the air outlet 15, thereby accelerating the diffusion and evaporation of moisture in the crushing chamber 12, thereby achieving rapid drying of the material and improving production efficiency. The high-temperature exhaust gas enters the spray tower 62 through the induced draft fan 61, and the alkaline solution in the spray tower 62 is used to absorb the organic matter in the exhaust gas, thereby achieving the purpose of removing pollutants, reducing the pollution of the exhaust gas, ensuring people's health, and protecting the environment and ecology.

[0032] Among them, Figure 2 As shown, a flow regulating valve 16 is provided at the connection between the hot air furnace 13 and the pulverizing chamber 12. The flow regulating valve 16 can be controlled to adjust the hot air volume and temperature in the pulverizing chamber 12, thereby meeting the requirements of different materials for the drying process.

[0033] The working principle of this embodiment is as follows: the material to be carbonized is fed into the crushing chamber 12, and is chopped into particles that meet the requirements of the carbonization furnace 3. At the same time, the fuel in the hot blast furnace 13 is ignited, and the fuel burns to generate hot air. Under the action of the fan 14, the hot air passes through the pipeline from the hot blast furnace 13 and is continuously transported to the crushing chamber 12, so that the material to be carbonized can be crushed and dried at the same time, avoiding the work of transporting in multiple processes and improving the work efficiency. A flow regulating valve 16 is set at the connection between the hot blast furnace 13 and the crushing chamber 12 pipeline, and the flow regulating valve 16 is set according to the different requirements of the drying process for different materials. The flow regulating valve 16 is adjusted to control the hot air volume and temperature in the crushing chamber 12, thereby controlling the temperature and speed of material drying; after the material is crushed and dried in the crushing chamber 12, it is sent out from the discharge port 11, and then transported to the carbonization inlet 31 of the carbonization furnace 3 through the conveying system 2, and enters the carbonization chamber 32. After the fuel in the combustion chamber 4 is ignited, heat is generated, and the heat energy is transferred to the carbonization chamber 32, so that the material inside the carbonization chamber 32 is subjected to high-temperature carbonization treatment; the material in the carbonization chamber 32 generates smoke after carbonization, and the smoke is discharged from the smoke outlet 33 through the first smoke outlet 33. The flue gas duct 51 and the second flue gas duct 52 are respectively transported to the combustion chamber 4 and the hot blast furnace 13, so that the carbonized flue gas is further burned as the combustion raw material of the combustion chamber 4 and the hot blast furnace 13, which not only realizes the reuse of the flue gas of the carbonization furnace 3, but also solves the fuel problem of the carbonization furnace 3 and the hot blast furnace 13, and reduces energy consumption. Since there is a time difference between the drying and carbonization of the material, when the material is dried and transported to the carbonization furnace 3 through the conveying system 2, the valve 53 can be closed, that is, the carbonized flue gas is stopped from being transported to the hot blast furnace 13, so that more carbonized flue gas is used for Carbonize the material and improve the efficiency of carbonization; the material will generate high-temperature exhaust gas after being crushed and dried in the crushing chamber 12. The induced draft fan 61 draws the generated high-temperature exhaust gas from the crushing chamber 12 through the air outlet 15, accelerating the diffusion and evaporation of moisture in the crushing chamber 12, thereby achieving rapid drying of the material and improving production efficiency. The high-temperature exhaust gas enters the spray tower 62 through the induced draft fan 61, and the alkaline solution in the spray tower 62 is used to absorb organic matter in the exhaust gas to achieve the purpose of removing pollutants, reducing the pollution of the exhaust gas, ensuring people's health, and protecting the environment and ecology.

[0034] The above description is only a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A carbonization furnace flue gas recycling device, characterized in that: The invention comprises a pulverizing and drying device (1), a conveying system (2), a carbonization furnace (3), a combustion chamber (4), a flue gas pipeline (5) and an exhaust gas treatment device (6). The pulverizing and drying device (1) is provided with a discharge port (11) at the bottom, the carbonization furnace (3) is provided with a carbonization inlet (31) at the top, the conveying system (2) is used for conveying and connecting the discharge port (11) of the pulverizing and drying device (1) and the carbonization inlet (31) of the carbonization furnace (3), a combustion chamber (4) is provided below the carbonization furnace (3), the combustion chamber (4) and the pulverizing and drying device (1) are both connected to the carbonization furnace (3) via a flue gas pipeline (5), and the pulverizing and drying device (1) is connected to the exhaust gas treatment device (6) via a pipeline.

2. The carbonization furnace flue gas recycling equipment according to claim 1 is characterized in that: The flue gas duct (5) comprises a first flue gas duct (51) and a second flue gas duct (52); one end of the first flue gas duct (51) and one end of the second flue gas duct (52) are both connected to the carbonization furnace (3); the other end of the first flue gas duct (51) is connected to the combustion chamber (4); and the other end of the second flue gas duct (52) is connected to the crushing and drying equipment (1).

3. The carbonization furnace flue gas recycling equipment according to claim 2 is characterized in that: The pulverizing and drying equipment (1) comprises a discharge port (11), a pulverizing chamber (12), a hot air furnace (13), a fan (14) and an air outlet (15); the discharge port (11) is provided at the lower part of the pulverizing chamber (12); a conveying system (2) is provided below the discharge port (11); the second smoke duct (52) is connected to the hot air furnace (13); the hot air furnace (13) is connected to the pulverizing chamber (12) pipeline; a fan (14) is fixedly installed on the side of the hot air furnace (13) away from the pulverizing chamber (12); an air outlet (15) is provided at the top of the pulverizing chamber (12); and the air outlet (15) is connected to the pipeline of the exhaust gas treatment equipment (6).

4. The carbonization furnace flue gas recycling equipment according to claim 2 is characterized in that: The carbonization furnace (3) comprises a carbonization inlet (31), a carbonization chamber (32) and a smoke outlet (33); the carbonization inlet (31) is arranged at the top of the carbonization chamber (32); a combustion chamber (4) is arranged below the carbonization chamber (32); a smoke outlet (33) is provided at the top of the carbonization furnace (3); and the smoke outlet (33) is connected to a first smoke duct (51) and a second smoke duct (52).

5. The carbonization furnace flue gas recycling equipment according to claim 3 is characterized in that: The tail gas treatment equipment (6) comprises an induced draft fan (61), a spray tower (62) and a discharge pipe (63); the gas outlet (15) of the pulverizing and drying equipment (1) and the spray tower (62) are connected via a pipeline of the induced draft fan (61); the lower side of the spray tower (62) is connected to the induced draft fan (61); and the top of the spray tower (62) is fixedly connected to the discharge pipe (63).

6. The carbonization furnace flue gas recycling equipment according to claim 3 is characterized in that: A flow regulating valve (16) is provided at the connection point between the hot air furnace (13) and the pulverizing chamber (12) pipeline.

7. The carbonization furnace flue gas recycling equipment according to claim 2 is characterized in that: The second flue gas duct (52) is provided with a valve (53).

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