CN201027197Y - Microwave drum dry distillation device - Google Patents

Abstract

The utility model relates to the field of pyrolysis and dry distillation of carbonaceous materials, which is a microwave drum dry distillation device, which is characterized in that it includes: a microwave oven body placed on a machine base, a supporting roller, and an inner spiral roller is arranged on the supporting roller , the inner spiral drum has a feed inlet, a slag discharge cylinder and an air outlet pipe connected with the slag discharge cylinder, the middle section of the inner spiral drum is placed in the microwave oven body, and the feed inlet of the inner spiral drum is connected with a screw conveyor. Due to the use of screw conveyors and inner screw drums to convey materials and microwave heating structure, it has the advantages of simple structure, convenient operation, fast dry distillation speed, high energy utilization rate, cleanliness and environmental protection. It can be widely used in dry distillation and pyrolysis of oil shale, coal, biomass and garbage.

Description

Microwave drum dry distillation device

technical field

The utility model relates to the field of pyrolysis and dry distillation of carbonaceous materials, which is a microwave drum dry distillation device, which is suitable for dry distillation of solid materials such as oil shale, coal, biomass and garbage.

Background technique

Currently, there are mainly two methods for dry distillation of solid materials such as oil shale, coal, biomass, and garbage, namely: the gas heat carrier method and the solid heat carrier method. The above two methods belong to heat conduction and heat convection heating methods, and this conventional heating method for materials is usually called external heating. Take oil shale dry distillation as an example: the gas heat carrier method relies on heating dry distillation gas as the heat source for dry distillation. When the amount of dry distillation gas is insufficient, inert gases such as steam or nitrogen must be added. Sometimes the oil shale is heated to 450 ~600°C, in addition to the above methods, it is also necessary to supplement the insufficient heat with high-temperature flue gas produced by burning oil shale or other fuels. In order to improve the porosity of oil shale accumulation in the retort furnace and the uniformity of heating, the gas heat carrier method generally treats large-grained oil shale of 15-75mm, while small-grained oil shale below 15mm cannot be sent into the retort furnace Therefore, the energy consumption of this method is high, the process is complicated, and the utilization rate of oil shale is low; the solid heat carrier method is to burn the semi-coke after dry distillation or heat solid particles such as sand to a certain temperature Then it becomes a solid heat carrier and mixes with oil shale. During this contact process, the solid heat carrier transfers heat to oil shale through heat conduction and heats it to 450-600°C to realize oil shale carbonization. Although this method mainly treats oil shale with small particles below 25mm, its main disadvantage is that an additional solid particle heating furnace is required and the solid particles need to be sent into the carbonization furnace in the form of pneumatic conveying, so the device is complex and large, and the wear is serious , Continuous running time is short, energy utilization rate is low.

Contents of the invention

The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art, to provide a kind of internal heating for materials, simple in structure, convenient in operation, fast in retort speed, high in energy utilization rate, clean, environmentally friendly, continuous and stable The operation of the microwave drum retort apparatus.

The technical solution adopted to solve the technical problem is: the technical solution adopted to solve the technical problem is: a microwave drum retort device, characterized in that it includes a machine base 2, on which a microwave oven body 1, a support bracket Roller 18, an inner spiral drum 9 is provided on the support roller 18, the inner spiral drum 9 has a feed port 20, a slag discharge cylinder 5 and an air outlet pipe 7 connected with the slag discharge cylinder 5, and the internal spiral drum 9 is provided with a power The wheel 13 and the middle section of the inner spiral drum 9 are placed in the microwave oven body 1, and the feeding port 20 of the inner spiral drum 9 is connected with the screw conveyor 15.

The microwave oven body 1 is connected with a microwave generator 11 to form a microwave oven.

The structure of the inner helical drum 9 is that it has an inner helical pusher blade 12 , and the middle section of the inner helical drum 9 placed in the microwave oven body 1 is also provided with a lifting inclined blade 10 .

The structure of the inner helical drum 9 is to have inner helical pusher blades 12 .

The structure of the inner spiral drum 9 is that it has a feed groove 25 .

The power wheel 13 is a sprocket, and is connected with the sprocket 21 on the shaft of the motor 17a through a transmission chain.

The structure of the screw conveyor 15 is to have a simplified body 23, on which a feeding hopper 14 is arranged, and a matching screw rod 24 is built in the cylindrical body 23, and the screw rod 24 is connected with the shaft of the motor 22b.

Microwave suppressors 19 are installed at both ports 6 of the inner spiral drum 9 through the microwave oven body 1 .

A positioning ring 8 is fixedly connected to the internal spiral drum 9 , and the positioning ring 8 is placed between the positioning rollers 3 fixed on the machine base 2 .

The slag discharge cylinder 5 is placed in the water seal tank 4 .

Compared with the prior art, the utility model adopts the internal spiral drum feeding and microwave heating structure, and uses the microwave drum dry distillation device as the application of dry distillation pyrolysis oil shale. During the heating process, the oil shale particles Continuous displacement along the inner spiral drum, when the oil shale particles enter the inner spiral drum of the built-in section of the microwave oven body along the inner spiral drum, they roll while the inner spiral displacement of the drum, and its surface is constantly renewed, and the oil shale particles in the drum are uniform There is an opportunity to be heated by microwaves on its surface, which enhances the heating uniformity of oil shale particles, which not only solves the limitation of microwave penetration, but also greatly improves the utilization of microwaves; at the same time, oil shale particles are tumbling During the process, the temperature rises rapidly to 450-600°C for carbonization and pyrolysis, and the gas from carbonization is quickly diffused, which speeds up the rate of microwave carbonization and ensures the quality of carbonization; The particle size requirements are greatly reduced, and solid materials with 0-30mm particles can be uniformly heated and retorted; the processing capacity of retorted oil shale particles can be adjusted by adjusting the speed of the screw conveyor, the rotation speed of the inner screw drum and the size of the microwave power, etc. method; the whole retort process is carried out in a continuous and steady state, with low requirements for pretreatment of retort oil shale particles, high degree of automation, and low labor consumption. It has the advantages of simple structure, convenient operation, fast dry distillation speed, high energy utilization rate, cleanliness and environmental protection. The utility model can also be used for dry distillation and pyrolysis of coal, biomass and garbage.

Description of drawings

Figure 1 is a schematic diagram of the structure of a microwave drum dry distillation device.

Fig. 2 is an enlarged schematic diagram of a three-dimensional cross-sectional view of the inner spiral drum structure in Fig. 1 .

FIG. 3 is an enlarged schematic perspective view of an inner helical drum structure with only inner helical pusher blades 12 .

FIG. 4 is an enlarged perspective view of a three-dimensional cross-sectional view of an inner spiral drum structure with a material guide groove 25 .

Fig. 5 is an enlarged schematic cross-sectional view of a structure with only a straight inner spiral drum.

In the figure: 1 microwave oven body, 2 machine base, 3 positioning roller, 4 water seal groove, 5 slag discharge cylinder, 6 port, 7 air outlet pipe, 8 positioning ring, 9 inner spiral drum, 10 inclined blade for lifting material, 11 microwave generator Device, 12 screw pusher blade, 13 power wheel, 14 feeding hopper, 15 screw conveyor, 16 mechanical seal, 17a motor, 18 support roller, 19 microwave suppressor, 20 feed port, 21 sprocket, 22b motor, 23 Simplified, 24 screw rods, 25 guide grooves.

Detailed ways

Referring to FIG. 1 , the microwave drum dry distillation device has a machine base 2 on which a microwave oven body 1 and supporting rollers 18 are placed. An inner spiral drum 9 is provided on the support roller 18, and the inner spiral drum 9 has a feed inlet 20, a slag discharge cylinder 5 and an air outlet pipe 7 communicating with the slag discharge cylinder 5, and the inner spiral drum 9 is provided with a power wheel 13. The feeding port 20 of the inner screw drum 9 is connected with the screw conveyor 15 through a mechanical seal 16 . The inner spiral drum 9 is connected with the slag tapping cylinder 5 and the air outlet pipe 7 communicating with the slag tapping cylinder 5 through a mechanical seal 16 . The inner spiral drum 9 is made of high-temperature-resistant and high-strength materials that pass through microwaves. The material can be heat-resistant ceramics and heat-resistant glass steel. Heat-resistant ceramics and heat-resistant glass steel also have wear resistance, which can greatly improve the operating cycle of the device. and service life. The middle section of the inner spiral drum 9 is placed in the microwave oven body 1 , and the feeding port 20 of the inner spiral drum 9 is connected with the screw conveyor 15 . The microwave oven body 1 is connected with a microwave generator 11 to form a microwave oven. Microwave oven body 1 is made of stainless steel plate, and microwave generator 11 is a plurality of microwave generators, and its power size can be set according to feed amount, feed type.

Referring to FIGS. 1 and 2 , the structure of the inner spiral drum 9 is that it has an inner spiral pusher blade 12 , and a lifting inclined blade 10 is also provided at the middle section of the inner spiral drum 9 placed in the microwave oven body 1 . This kind of internal spiral drum 9 is the best structure.

Referring to FIG. 3 , the inner helical drum 9 may only have inner helical pusher blades 12 .

Referring to FIG. 4 , the inner spiral drum 9 may have several material guide grooves 25 .

Referring to Fig. 5, the inner spiral drum 9 may only have a straight cylinder.

When the inner helical drum 9 and the straight inner helical drum 9 shown in Fig. 4 and Fig. 5 with only the inner helical pusher blade 12 are set, the inclination angle of the feed end relative to the discharge end is 5-15°.

Referring to FIG. 1 , the power wheel 13 is a sprocket, and is connected to the sprocket 21 on the shaft of the motor 17a through a transmission chain. The motor 17a is a speed regulating motor. The structure of the screw conveyor 15 is that it has a cylinder body 23, on which a feeding hopper 14 is arranged, and a matching screw rod 24 is built in the cylinder body 23, and the screw rod 24 is connected with the shaft of the motor 22b. Microwave suppressors 19 for preventing microwave leakage are arranged at the two ports 6 of the inner spiral drum 9 through the microwave oven body 1 . A positioning ring 8 is fixedly connected to the internal spiral drum 9 , and the positioning ring 8 is placed between the positioning rollers 3 fixed on the machine base 2 . The slag discharge cylinder 5 is placed in the water seal tank 4 .

Using Figures 1 and 2, a specific application example of the microwave drum retort device as retort pyrolysis oil shale is briefly described below: the oil shale particles with a particle size of 0-30 mm are fed into the screw conveyor 15 through the feeding hopper 14 15 into the inner spiral drum 9, the oil shale particles are driven by the spiral pusher blade 12 of the inner spiral drum 9, and enter from the inlet end of the microwave oven body 1 along the helical displacement of the inner spiral drum 9, and the inner spiral drum 9 spirally pushes the material Under the double action of the vane 12 and the tilting vane 10, the oil shale particles are rolled along the helical displacement of the inner helical drum 9 at the same time, and the oil shale particles absorb microwaves in the microwave oven body 1, and after dry distillation and pyrolysis, they are removed from the outlet end of the microwave oven body 1, and then The helical pusher blade 12 of the inner helical drum 9 pushes out the inner helical drum 9, discharges it into the slag discharge drum 5, and is cooled in the water seal tank 4, and the gas produced is led out from the gas outlet pipe 7, and shale oil and gas are obtained through dry distillation and condensation Gas and semi-coke.

Claims (9)

1. A microwave drum dry distillation device is characterized in that it comprises a base (2), on which a microwave oven body (1), a support roller (18), and a microwave oven body (1) are placed on the base (2). The generator (11) is connected to form a microwave oven; an inner spiral drum (9) is provided on the support roller (18), and the inner spiral drum (9) has a feed inlet (20), a slag discharge cylinder (5) and a The air outlet pipe (7) connected to the barrel (5), the inner spiral drum (9) is provided with a power wheel (13), the middle section of the inner spiral drum (9) is placed in the microwave oven body (1), and the inner spiral drum (9) The feed inlet (20) is connected with the screw conveyor (15). 2. The microwave drum dry distillation device according to claim 1, characterized in that, the structure of the inner helical drum (9) is provided with inner helical pusher blades (12). 3. The microwave drum dry distillation device according to claim 1 or 2, characterized in that, the structure of the inner helical drum (9) is to have an inner helical pusher blade (12), placed in the microwave oven body (1) The middle section of the inner inner spiral drum (9) is also provided with a lifting inclined blade (10). 4 . The microwave drum dry distillation device according to claim 1 , characterized in that, the structure of the inner spiral drum ( 9 ) is provided with a material guide groove ( 25 ). 5. The microwave drum retort device according to claim 1, characterized in that the power wheel (13) is a sprocket, and is connected to the sprocket (21) on the shaft of the motor (17a) through a transmission chain. 6. microwave drum dry distillation device according to claim 1, is characterized in that, the structure of described screw conveyer (15) is, has cylinder body (23), is provided with feeding hopper (14) on cylinder body (23) ), a screw rod (24) that matches is built-in in cylinder body (23), and screw rod (24) is connected with the shaft of motor (22b). 7. The microwave drum dry distillation device according to claim 1, characterized in that microwave suppressors (19) are provided at both ports (6) of the inner spiral drum (9) through the microwave oven body (1) ). 8. The microwave drum dry distillation device according to claim 1, characterized in that a positioning ring (8) is fixedly connected to the inner spiral drum (9), and the positioning ring (8) is placed on the base (2) between the upper fixed positioning rollers (3). 9. The microwave drum dry distillation device according to claim 1, characterized in that the slag tapping cylinder (5) is placed in a water seal tank (4).

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