Carbonized tail gas waste heat raw material drying device with purification function

Abstract

The utility model relates to the technical field of raw material drying devices, in particular to a carbonization tail gas waste heat raw material drying device with a purification function, which comprises a carbonization furnace, the output end of the carbonization furnace is communicated with a tail gas treatment system through a pipeline, and the output end of the tail gas treatment system is communicated with a waste heat recovery system through a pipeline. The output end of the waste heat recovery system communicates with a dryer and a waste gas treatment system through pipelines. Tail gas generated in the carbonization process of the carbonization furnace firstly enters the tail gas treatment system to be purified, the tail gas sequentially passes through the incinerator, the denitration tower, the desulfurization tower and the dust remover and then is discharged, heat of the purified tail gas is transmitted to circulating water or heat conduction oil in the waste heat recovery system through the heat exchanger, and a high-temperature heat medium is formed. The high-temperature heat medium is then fed into a dryer to dry the raw materials, and the tail gas subjected to heat exchange is discharged after being treated by a cyclone dust collector and a bag-type dust collector in the waste gas treatment system.

Description

Technical Field

[0001] The utility model relates to the technical field of raw material drying devices, in particular to a device for drying raw materials with waste heat from carbonized tail gas and having a purification function. Background Art

[0002] The biomass raw material carbonization system uses wood chips, crop straw, rice husks, grass, shrub branches, bamboo and wood cuttings, bamboo chips, sugarcane bagasse and other raw materials. Through the fiber rod making equipment, they are extruded into machine-made fiber rods at high temperature. The machine-made fiber rods are then fully carbonized through the carbonization furnace. The obtained carbon rods have high density, small volume and good combustibility, which can replace firewood and coal. The tail gas will be generated during the carbonization process. The tail gas contains combustible gases such as methane, etc., and also contains wood tar, etc. The tail gas outlet temperature is very high. The waste heat of the carbonization tail gas can be used to dry the raw material device.

[0003] After searching, the announcement number is CN213747939U, and the name is an activation furnace exhaust waste heat drying device, which includes an outer cylinder with both left and right ends blocked. Through research and analysis, it is found that although it has the advantage of using exhaust gas heat energy to dry raw materials, it still has the following disadvantages to a certain extent.

[0004] For example, the raw materials inside the inner cylinder can only be dried by heating it, and the exhaust gas drying mechanism cannot be set up in the inner cylinder to dry the raw materials. At the same time, it is not convenient to discharge the dried raw materials in the device, and manual removal is required, which reduces the practicality and efficiency of the device. In order to solve the above technical problems, we have designed a carbonization exhaust waste heat drying raw material device with purification function. Utility Model Content

[0005] The purpose of the utility model is to provide a carbonization exhaust waste heat drying raw material device with a purification function, which has the advantages of high raw material drying efficiency and convenient discharge, and solves the problem that the raw materials inside can only be dried by heating the inner cylinder, and the exhaust gas drying mechanism cannot be set up in the inner cylinder to dry the raw materials, and at the same time, the raw materials dried in the device cannot be discharged conveniently.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a carbonization exhaust gas waste heat drying raw material device with a purification function, comprising a carbonization furnace, the output end of the carbonization furnace is connected to the exhaust gas treatment system through a pipeline, the output end of the exhaust gas treatment system is connected to the waste heat recovery system through a pipeline, and the output ends of the waste heat recovery system are respectively connected to the dryer and the exhaust gas treatment system through pipelines. The dryer comprises a shell, the inner wall of the shell is rotatably embedded with a drum through a sealed bearing, the left side of the shell is fixedly connected to a feed hopper through a support rod, the right end of the feed hopper is rotatably connected to the inner wall of the left end of the drum through a sealed bearing, the right side of the shell is fixedly connected to a liquid inlet pipe 2 through a support rod, the left side of the shell is fixedly connected to a liquid outlet pipe 2 through a support rod, the right side of the bottom of the shell is connected to a liquid inlet pipe 1, and the left side of the top of the shell is connected to a liquid outlet pipe 1, the surface of the shell is installed with a rolling drive mechanism, and the inner cavity of the drum is installed with a drying unloading mechanism.

[0007] Preferably, the rolling drive mechanism includes a driven gear, which is fixedly sleeved on the surface of the right end of the drum, and the front side of the right side of the shell is fixedly connected to motor 1 through a support, and the rotating shaft of motor 1 is fixedly connected to a driving gear, and the driving gear is engaged with the driven gear.

[0008] Preferably, the drying and unloading mechanism includes a rotating tube, one end of the rotating tube is rotatably embedded in the inner wall of the feed hopper through a sealed bearing, the surface of the rotating tube is sleeved with spiral blades welded, the surface of the rotating tube is connected to a drying tube, the right end of the rotating tube is rotatably connected to the left end of the liquid inlet pipe 2 through a sealed bearing, and the left end of the rotating tube is rotatably connected to the right end of the liquid outlet pipe 2 through a sealed bearing.

[0009] Preferably, the left side of the feed hopper is fixedly connected to a second motor via a support, and the rotating shaft of the second motor and the surface of the left end of the rotating tube are fixedly sleeved with bevel gears, and the two bevel gears are meshed with each other.

[0010] Preferably, the carbonization furnace is used to heat and decompose solid fuel into gas, liquid and solid products under air-tight conditions, and the exhaust gas treatment system includes an incinerator, a denitrification tower, a desulfurization tower, a dust collector and a waste heat boiler, which remove harmful components in the exhaust gas through a series of treatment steps and recover waste heat.

[0011] Preferably, the waste heat recovery system utilizes the high temperature heat in the tail gas to perform heat exchange, and transfers the heat in the tail gas to circulating water or heat transfer oil through a heat exchanger to form a high temperature heat medium for drying the raw materials.

[0012] Preferably, the exhaust gas treatment system includes a cyclone dust collector and a bag dust collector to ensure that the exhausted exhaust gas meets environmental protection standards.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. In the utility model, the tail gas generated by the carbonization process of the carbonization furnace first enters the tail gas treatment system for purification treatment. The tail gas is discharged after passing through the incinerator, denitrification tower, desulfurization tower and dust collector in sequence. The purified tail gas transfers heat to circulating water or thermal oil through the heat exchanger in the waste heat recovery system to form a high-temperature heat medium for drying the raw materials. The high-temperature heat medium is then sent to the dryer to dry the raw materials. The tail gas after heat exchange is discharged after being treated by the cyclone dust collector and bag dust collector in the exhaust gas treatment system.

[0015] 2. The high-temperature heat medium of the utility model enters the liquid inlet pipe 1 and the liquid inlet pipe 2 through the pipeline, then enters the shell, the rotating pipe and the drying pipe, and then enters the return pipe from the liquid outlet pipe 1 and the liquid outlet pipe 2 to circulate back into the heat exchanger. The raw materials are added to the drum through the feed hopper, and the operation of the motor 1 is controlled to rotate the driving gear, thereby rotating the driven gear and the drum. The high-temperature heat medium in the shell heats the drum and dries the raw materials tumbling in the drum. At the same time, the high-temperature heat medium in the rotating pipe and the drying pipe dries the tumbling raw materials, thereby having the advantage of being able to tumble dry the raw materials and improving the efficiency of raw material drying.

[0016] 3. The utility model controls the operation of the second motor to rotate the rotating tube under the transmission of the bevel gear, and then rotates the spiral blades and the drying tube, thereby having the advantage of being able to easily discharge the raw materials dried in the drum without the need for manual removal, thereby improving the practicality and efficiency of the device, and at the same time ensuring that the high-temperature heat medium is discharged through the rotating tube and the drying tube, and the drying operation is still maintained during the discharge process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a left-side perspective diagram of the present invention;

[0019] Figure 3 This is a partially cutaway perspective diagram of the present invention;

[0020] Figure 4 This is the principle diagram of the process of this utility model.

[0021] In the figure: 1. Carbonization furnace; 2. Exhaust gas treatment system; 3. Waste heat recovery system; 4. Dryer; 41. Shell; 42. Drum; 43. Feed hopper; 44. Liquid inlet pipe 1; 45. Liquid inlet pipe 2; 46. Liquid outlet pipe 1; 47. Liquid outlet pipe 2; 48. Rolling drive mechanism; 481. Driven gear; 482. Motor 1; 483. Driving gear; 49. Drying unloading mechanism; 491. Rotating pipe; 492. Spiral blade; 493. Drying pipe; 494. Motor 2; 495. Bevel gear; 5. Exhaust gas treatment system. DETAILED DESCRIPTION

[0022] See also Figure 1-Figure 4 , a carbonization exhaust waste heat drying raw material device with a purification function, includes a carbonization furnace 1, the output end of the carbonization furnace 1 is connected to the exhaust gas treatment system 2 through a pipeline, the output end of the exhaust gas treatment system 2 is connected to the waste heat recovery system 3 through a pipeline, and the output ends of the waste heat recovery system 3 are respectively connected to the dryer 4 and the exhaust gas treatment system 5 through pipelines. The dryer 4 includes a shell 41, the inner wall of the shell 41 is rotatably embedded with a drum 42 through a sealed bearing, the left side of the shell 41 is fixedly connected to a feed hopper 43 through a support rod, and the right end of the feed hopper 43 is rotatably connected to the inner wall of the left end of the drum 42 through a sealed bearing, the right side of the shell 41 is fixedly connected to a liquid inlet pipe 2 45 through a support rod, the left side of the shell 41 is fixedly connected to a liquid outlet pipe 2 47 through a support rod, the right side of the bottom of the shell 41 is connected to a liquid inlet pipe 1 44, and the left side of the top of the shell 41 is connected to a liquid outlet pipe 1 46. A rolling drive mechanism 48 is installed on the surface of the shell 41, and a drying unloading mechanism 49 is installed in the inner cavity of the drum 42.

[0023] See also Figure 1 and Figure 3 The rolling drive mechanism 48 includes a driven gear 481, which is fixedly sleeved on the surface of the right end of the roller 42. By setting the driven gear 481, the driving gear 483 is rotated under the drive of the motor 482, and then it is driven to rotate, so that it drives the roller 42 to rotate and rolls the raw materials in the roller 42. At the same time, it is ensured that the normal installation of the rotating tube 491 is not affected, so that the rotating tube 491 and the roller 42 remain coaxial. The front side of the right side of the shell 41 is fixedly connected to the motor 482 through the support, and the rotating shaft of the motor 482 is fixedly connected to the driving gear 483, and the driving gear 483 is meshed with the driven gear 481.

[0024] See also Figure 2 and Figure 3The drying and unloading mechanism 49 includes a rotating tube 491. One end of the rotating tube 491 is rotated and embedded in the inner wall of the feed hopper 43 through a sealed bearing. The surface of the rotating tube 491 is welded with a spiral blade 492. By setting the spiral blade 492, the raw materials in the drum 42 can be transported under its rotation. There is a large distance between the middle position of the spiral blade 492 and the rotating tube 491. When the drum 42 rotates, it will not affect the normal rolling of the raw materials. At the same time, it provides space for the installation of the drying tube 493, so that the drying tube 493 can transport the rolling raw materials. For better drying, the surface of the rotating tube 491 is connected to the drying tube 493. By setting the drying tube 493, it is kept connected with the rotating tube 491, so that the high-temperature heat medium entering the rotating tube 491 enters multiple drying tubes 493 for dispersion, and then is discharged from the left end of the rotating tube 491, thereby increasing the drying and heating area and improving the drying efficiency. The right end of the rotating tube 491 is rotationally connected to the left end of the liquid inlet pipe 2 45 through a sealed bearing, and the left end of the rotating tube 491 is rotationally connected to the right end of the liquid outlet pipe 2 47 through a sealed bearing.

[0025] See also Figure 2 and Figure 3 The left side of the feed hopper 43 is fixedly connected to a motor 2 494 through a support. The rotating shaft of the motor 2 494 and the surface of the left end of the rotating tube 491 are fixedly sleeved with a bevel gear 495. By setting the bevel gear 495, the rotating tube 491 is driven by the motor 2 494 to rotate without affecting the connection between the rotating tube 491 and the liquid outlet pipe 2 47. The two bevel gears 495 are engaged with each other.

[0026] See also Figure 1 The carbonization furnace 1 is used to heat and decompose solid fuel into gas, liquid and solid products under air-tight conditions. The exhaust gas treatment system 2 includes an incinerator, a denitrification tower, a desulfurization tower, a dust collector and a waste heat boiler. Through a series of treatment steps, harmful components in the exhaust gas are removed and waste heat is recovered.

[0027] See also Figure 1 The waste heat recovery system 3 uses the high temperature heat in the tail gas for heat exchange, and transfers the heat in the tail gas to circulating water or heat transfer oil through the heat exchanger to form a high temperature heat medium for drying raw materials.

[0028] See also Figure 1 The exhaust gas treatment system 5 includes a cyclone dust collector and a bag dust collector to ensure that the discharged exhaust gas meets environmental protection standards.

[0029] During use, the tail gas generated by the carbonization process of the carbonization furnace 1 first enters the tail gas treatment system 2 for purification treatment, and the tail gas is discharged after passing through the incinerator, denitrification tower, desulfurization tower and dust collector in sequence. The purified tail gas transfers heat to circulating water or heat transfer oil through the heat exchanger in the waste heat recovery system 3 to form a high-temperature heat medium for drying the raw materials. The high-temperature heat medium is then sent to the dryer 4 to dry the raw materials. The tail gas after heat exchange is discharged after being treated by the cyclone dust collector and bag dust collector in the exhaust gas treatment system 5. The high-temperature heat medium enters the liquid inlet pipe 1 44 and the liquid inlet pipe 2 45 through the pipeline, and then enters the shell 41, the rotating pipe 491 and the drying pipe 493, and then enters the reflux pipe from the liquid outlet pipe 1 46 and the liquid outlet pipe 2 47. The raw materials are refluxed to the heat exchanger for circulation, and are added into the drum 42 through the feed hopper 43. The operation of the motor 1 482 is controlled to rotate the driving gear 483, thereby rotating the driven gear 481 and the drum 42. The high-temperature heat medium in the shell 41 heats the drum 42 and dries the raw materials tumbling in the drum 42. At the same time, the high-temperature heat medium in the rotating tube 491 and the drying tube 493 dries the tumbling raw materials, and the raw materials can be tumbled and dried. By controlling the operation of the motor 2 494, the rotating tube 491 is rotated under the transmission of the bevel gear 495, thereby rotating the spiral blade 492 and the drying tube 493, which can facilitate the discharge of the dried raw materials in the drum 42 without manual removal.

[0030] To sum up: the carbonization exhaust waste heat drying raw material device with purification function, through the shell 41, drum 42, feed hopper 43, liquid inlet pipe 1 44, liquid inlet pipe 2 45, liquid outlet pipe 1 46, liquid outlet pipe 2 47, rolling drive mechanism 48 and drying discharge mechanism 49, solves the problem that the raw materials inside can only be dried by heating the inner cylinder, and the exhaust gas drying mechanism cannot be set up in the inner cylinder to dry the raw materials, and at the same time, it is not convenient to discharge the dried raw materials in the device.

Claims

1. A device for drying raw materials using waste heat from carbonized tail gas with a purification function, comprising a carbonization furnace (1), wherein the output end of the carbonization furnace (1) is connected to a tail gas treatment system (2) via a pipeline, the output end of the tail gas treatment system (2) is connected to a waste heat recovery system (3) via a pipeline, and the output end of the waste heat recovery system (3) is connected to a dryer (4) and an exhaust gas treatment system (5) via pipelines, respectively, wherein: The dryer (4) comprises a shell (41), the inner wall of the shell (41) is rotatably connected to a drum (42) via a sealed bearing, the left side of the shell (41) is fixedly connected to a feed hopper (43) via a support rod, the right end of the feed hopper (43) is rotatably connected to the inner wall of the left end of the drum (42) via a sealed bearing, the right side of the shell (41) is fixedly connected to a second liquid inlet pipe (45) via a support rod, the left side of the shell (41) is fixedly connected to a second liquid outlet pipe (47) via a support rod, the right side of the bottom of the shell (41) is connected to a first liquid inlet pipe (44), the left side of the top of the shell (41) is connected to a first liquid outlet pipe (46), a rolling drive mechanism (48) is installed on the surface of the shell (41), and a drying unloading mechanism (49) is installed in the inner cavity of the drum (42).

2. The device for drying raw materials using waste heat from carbonized tail gas with purification function according to claim 1, characterized in that: The rolling drive mechanism (48) includes a driven gear (481), which is fixedly sleeved on the surface of the right end of the roller (42). The front side of the right side of the housing (41) is fixedly connected to a motor 1 (482) through a support. The rotating shaft of the motor 1 (482) is fixedly connected to a driving gear (483), and the driving gear (483) is meshed with the driven gear (481).

3. The device for drying raw materials using waste heat from carbonized tail gas with purification function according to claim 1, characterized in that: The drying and unloading mechanism (49) includes a rotating tube (491), one end of which is rotatably embedded in the inner wall of the feed hopper (43) through a sealed bearing, and a spiral blade (492) is welded on the surface of the rotating tube (491). The surface of the rotating tube (491) is connected to a drying tube (493), and the right end of the rotating tube (491) is rotatably connected to the left end of the second liquid inlet pipe (45) through a sealed bearing, and the left end of the rotating tube (491) is rotatably connected to the right end of the second liquid outlet pipe (47) through a sealed bearing.

4. The device for drying raw materials using waste heat from carbonized tail gas with purification function according to claim 3 is characterized in that: The left side of the feed hopper (43) is fixedly connected to a second motor (494) via a support. The rotating shaft of the second motor (494) and the surface of the left end of the rotating tube (491) are both fixedly sleeved with a bevel gear (495), and the two bevel gears (495) are meshed with each other.

5. The device for drying raw materials using waste heat from carbonized tail gas with purification function according to claim 1, characterized in that: The carbonization furnace (1) is used to heat and decompose solid fuel into gas, liquid and solid products under air-tight conditions. The tail gas treatment system (2) includes an incinerator, a denitrification tower, a desulfurization tower, a dust collector and a waste heat boiler. Through a series of treatment steps, harmful components in the tail gas are removed and waste heat is recovered.

6. The device for drying raw materials using waste heat from carbonized tail gas with purification function according to claim 1, characterized in that: The waste heat recovery system (3) utilizes the high temperature heat in the tail gas to perform heat exchange, and transfers the heat in the tail gas to circulating water or heat transfer oil through a heat exchanger to form a high temperature heat medium for drying raw materials.

7. The device for drying raw materials using waste heat from carbonized tail gas with purification function according to claim 1, characterized in that: The exhaust gas treatment system (5) includes a cyclone dust collector and a bag dust collector to ensure that the discharged exhaust gas meets environmental protection standards.

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