Semi-continuous waste tire thermal cracking feeding and deslagging equipment

Abstract

The utility model provides semi-continuous feeding and deslagging equipment for thermal cracking of waste tires, which belongs to the technical field of thermal cracking treatment of waste rubber and plastic and comprises a reaction kettle, a feeding and deslagging device and a water spraying and steam stripping device, the reaction kettle is of an external rotation type and comprises a reaction kettle barrel body and a reaction kettle spiral blade which is spirally arranged along the inner wall of the reaction kettle barrel body; the feeding and deslagging device is connected with one end of the reaction kettle and is used for conveying pyrolysis materials into the reaction kettle or deslagging; the water spraying and steam stripping device is connected with the other end of the reaction kettle and is used for spraying water into the reaction kettle; comprising a high-pressure spiral nozzle and a rotary joint, the high-pressure spiral nozzle is arranged in the reaction kettle; the rotating joint is arranged outside the reaction kettle, and the movable end is connected with the high-pressure spiral nozzle. The utility model solves the technical problem that the existing pyrolysis equipment is low in vaporization rate and pyrolytic oil yield, and has the characteristics of high vaporization rate, pyrolytic oil yield, extraction rate and light oil yield.

Description

TECHNICAL FIELD

[0001] The utility model belongs to waste rubber and plastic pyrolysis processing technical field especially relates to a kind of semi-continuous waste tyre thermal cracking feed discharging equipment. BACKGROUND

[0002] The accumulation of a large number of waste tires not only occupies land, but also easily causes fire and environmental pollution. Recycling and processing waste tires can not only alleviate the pressure on the environment and reduce pollution, but also effectively recycle resources. Current methods for processing waste tires include prototype modification, production of reclaimed rubber and rubber powder, incineration, and pyrolysis. Among them, pyrolysis technology is a process in which waste tires are thermally decomposed in an oxygen-deficient or inert gas environment, producing pyrolysis gas, pyrolysis oil, and carbon residue. These products can be further processed into high-value products with various uses, providing high economic and environmental benefits. However, existing pyrolysis equipment often has low vaporization rate and pyrolysis oil yield. SUMMARY

[0003] Details of one or more embodiments of the utility model are presented in the following drawings and description to make other features, purposes, and advantages of the present application more concise and easy to understand.

[0004] The utility model provides a kind of semi-continuous waste tyre thermal cracking feed discharging equipment, solve the technical problem that the vaporization rate and pyrolysis oil yield of existing pyrolysis equipment are often low, with the characteristics of high vaporization rate, pyrolysis oil yield, pull-out rate and light oil yield.

[0005] The utility model discloses a kind of semi-continuous waste tyre thermal cracking feed discharging equipment, comprising: reaction kettle, feed discharging device, water spraying stripping device;The reaction kettle is outer spiral type, including reaction kettle cylinder body and the reaction kettle helical blade being spirally arranged along the reaction kettle inner wall;The feed discharging device is connected with one end of the reaction kettle, for conveying pyrolysis material or discharging slag into the reaction kettle;The water spraying stripping device is connected with the other end of the reaction kettle, for spraying water into the reaction kettle;Including: high-pressure spiral spray head, swivel joint;The high-pressure spiral spray head is located in the reaction kettle;The swivel joint is located outside the reaction kettle, and the dynamic end is connected with the high-pressure spiral spray head.

[0006] In some embodiments, the other end of the reaction kettle is provided with a feed cover, and a swivel joint mounting seat for mounting the swivel joint is arranged in the middle of the feed cover.

[0007] In some embodiments, the water spraying stripping device further includes a high-level water storage tank and a diaphragm metering pump, and the water outlet of the high-level water storage tank is connected with the water inlet of the diaphragm metering pump through a first conveying pipeline, and the water outlet of the diaphragm metering pump is connected with the swivel joint through a second conveying pipeline.

[0008] In some embodiments, along the water conveying direction, a flow control valve, a glass rotor flowmeter and a Y-shaped filter are sequentially arranged on the first conveying pipeline, and the first conveying pipeline is connected with the high-level water storage tank through a high-level water storage tank control valve.

[0009] In some embodiments, along the water conveying direction, a local pressure gauge, an outlet check valve, a high-temperature oil steam control valve and a spray gun quick connector are sequentially arranged on the second conveying pipeline, and the outlet of the spray gun quick connector is connected with the static end of the rotary joint.

[0010] In some embodiments, the feeding and slagging device comprises a feeding and slagging screw, one end of which penetrates into the reaction kettle and is connected with the reaction kettle through a dynamic and static cooperation sealing sleeve; the feeding and slagging screw comprises a feeding and slagging cylinder, a feeding and slagging rotating shaft sleeved in the feeding and slagging cylinder and feeding and slagging spiral blades sleeved outside the feeding and slagging rotating shaft.

[0011] In some embodiments, a feeding port and an oil outlet are arranged above the side of the feeding and slagging cylinder, and a slagging outlet is arranged below the side of the feeding and slagging cylinder.

[0012] In some embodiments, the feeding and slagging device further comprises a feeding screw conveyor connected with the feeding port and a slagging screw connected with the slagging outlet.

[0013] In some embodiments, the semi-continuous waste tire thermal cracking feeding and slagging equipment is connected with an oil steam treatment device through the oil outlet.

[0014] In some embodiments, the oil steam treatment device comprises a catalytic separation tower, a heavy component cooling oil collection buffer tank connected with the bottom of the catalytic separation tower, a vertical condenser connected with the top of the catalytic separation tower and a light component cooling oil collection buffer tank connected with the vertical condenser.

[0015] Compared with the prior art, the semi-continuous waste tire thermal cracking feeding and slagging equipment has the following beneficial effects:

[0016] The semi-continuous waste tire thermal cracking feeding and slagging equipment has the following beneficial effects: the water spraying stripping device is arranged, and the water spraying stripping device and the feeding and slagging device are oppositely arranged at two ends of the reaction kettle, so that the direction of water spraying of the high-pressure spiral spray head is opposite to the feeding direction in the reaction kettle, the vaporization rate and the pyrolysis oil yield are improved, specifically, the water spraying stripping gas reduces the oil gas partial pressure in the kettle, so that the pyrolysis oil vapor fraction vaporizes at a lower boiling point, the feeding vaporization rate is improved, the light components in the liquid phase below the feeding section are also vaporized, the content of light components in the thermal cracking mixed oil is reduced, the pull-out rate and the light oil yield are improved. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of the semi-continuous waste tire pyrolysis feeding and discharging equipment provided in this embodiment of the utility model;

[0019] In the above figures: 10. Reactor; 201. Feed and slag discharge screw conveyor; 202. Feed screw conveyor; 203. Slag discharge screw conveyor; 301. High-pressure screw nozzle; 302. Rotary joint; 303. High-level water storage tank; 304. Diaphragm metering pump; 305. First conveying pipeline; 306. Second conveying pipeline; 307. Flow control valve; 308. Glass rotor flow meter; 309. Y-type filter; 310. High-level water storage tank control valve; 311. Local pressure gauge; 312. Outlet check valve; 313. High-temperature oil vapor control valve; 314. Spray gun quick connector; 401. Catalytic separation tower; 402. Heavy component cooling oil collection and buffer tank; 403. Vertical condenser; 404. Light component cooling oil collection and buffer tank; 405. Non-condensable pyrolysis gas separator. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described and explained below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments provided by this utility model without inventive effort are within the scope of protection of this utility model.

[0021] This utility model provides a semi-continuous waste tire pyrolysis feeding and slag discharging device. Figure 1 This is a schematic diagram of the semi-continuous waste tire pyrolysis feeding and discharging equipment according to an embodiment of the present invention. (Reference) Figure 1As shown, the semi-continuous waste tire thermal cracking feeding and slagging device comprises a reaction kettle 10, a feeding and slagging device, and a water spraying stripping device; the reaction kettle 10 is an outer rotating type, comprising a reaction kettle 10 cylinder and reaction kettle 10 spiral blades arranged along the inner wall of the reaction kettle 10 cylinder; the feeding and slagging device is connected to one end of the reaction kettle 10 and used for feeding pyrolysis materials or slagging into the reaction kettle 10; the water spraying stripping device is connected to the other end of the reaction kettle 10 and used for spraying water into the reaction kettle 10; comprising: a high-pressure spiral spray head 301 and a rotary joint 302; the high-pressure spiral spray head 301 is arranged in the reaction kettle 10; the rotary joint 302 is arranged outside the reaction kettle 10, and a moving end is connected to the high-pressure spiral spray head 301. The semi-continuous waste tire thermal cracking feeding and slagging device sets the water spraying stripping device at two ends of the reaction kettle 10 opposite to the feeding and slagging device, so as to ensure that the water spraying direction of the high-pressure spiral spray head 301 is opposite to the feeding direction in the reaction kettle 10, which is beneficial to reduce the oil and gas partial pressure in the reaction kettle 10, thereby improving the vaporization rate and pyrolysis oil yield. Specifically, the water spraying stripping gas reduces the oil and gas partial pressure in the kettle, so that the pyrolysis oil vapor fraction vaporizes at a lower boiling point, improves the feeding vaporization rate, and also vaporizes the light components in the liquid phase below the feeding section, reduces the light component content in the thermal cracking mixed oil, and improves the stripping rate and light oil yield.

[0022] The main function of the rotary joint 302 in the above semi-continuous waste tire thermal cracking feeding and slagging device is to transmit fluid media such as liquid and gas in rotary motion. The thermal cracking reaction kettle 10 is rotating, and the spray gun quick connector 314 is stationary. The use of the rotary joint 302 can solve the problem of dynamic and static cooperation. The inlet end of the high-pressure spiral spray head 301 is connected to the moving end of the rotary joint 302 to form a dynamic and static cooperation structure. It should be noted that by limiting the reaction kettle 10 to be an outer rotating type, a rotating shaft does not need to be arranged in the reaction kettle 10 cylinder like an inner rotating type. In this way, the water spraying stripping device and the feeding and slagging device can be arranged at two ends of the reaction kettle 10 respectively, thereby ensuring that the water spraying direction of the high-pressure spiral spray head 301 is opposite to the feeding direction in the reaction kettle 10, fully ensuring sufficient and uniform contact between water vapor and feeding, which is beneficial to reduce the oil and gas partial pressure in the reaction kettle 10, thereby improving the vaporization rate and pyrolysis oil yield.

[0023] In some embodiments, the other end of the reactor 10 is provided with a feed cover, and the middle of the feed cover is provided with a rotary joint 302 mounting seat for mounting the rotary joint 302. Specifically, the left side of the thermal cracking reactor 10 is provided with a feed cover, and the middle of the feed cover is provided with a rotary joint 302 mounting seat. The thermal cracking reactor 10 is provided with a spiral blade inside, and the thermal cracking reactor 10 is wrapped with a heating box outside to provide heat for the materials in the reactor. A flue gas duct is vertically arranged on the upper part of the heating box, and the discharged flue gas is sent to an external desulfurization system for treatment to meet the emission standard. The lower part of the thermal cracking reactor 10 is provided with a mounting base, and three groups of heating burners are equidistantly arranged on the mounting base.

[0024] In some embodiments, the water spraying stripping device further comprises a high-level water storage tank 303 and a diaphragm metering pump 304, the water outlet of the high-level water storage tank 303 is connected with the water inlet of the diaphragm metering pump 304 through a first conveying pipeline 305, and the water outlet of the diaphragm metering pump 304 is connected with the rotary joint 302 through a second conveying pipeline 306. In the water conveying direction, the first conveying pipeline 305 is sequentially provided with a flow control valve 307, a glass rotor flowmeter 308, and a Y-shaped filter 309, and the first conveying pipeline 305 is connected with the high-level water storage tank 303 through a high-level water storage tank control valve 310; the second conveying pipeline 306 is sequentially provided with an on-site pressure gauge 311, an outlet check valve 312, a high-temperature oil vapor control valve 313, and a spray gun quick connector 314; the outlet of the spray gun quick connector 314 is connected with the static.

[0025] The high-level water storage tank 303 provides water source for the thermal cracking reactor 10, the water inlet is vertically arranged on the upper part of the tank body, the right side of the tank body is provided with a magnetic flip plate liquid level meter, and the lower conical body of the tank body is provided with a control valve. The front of the diaphragm metering pump 304 is provided with a flow control valve 307, the outlet of which is provided with a glass rotor flowmeter 308, which is mainly used for measuring the instantaneous flow of water used by the high-pressure spiral spray head 301 in the closed pipeline, and the flow of the high-pressure spiral spray head 301 can be adjusted as needed. The outlet of the glass rotor flowmeter 308 is connected with the Y-shaped filter 309, and the Y-shaped filter 309 mainly functions to filter impurities in the medium to protect the normal use of valves and equipment. The inlet of the diaphragm metering pump 304 is connected with the outlet of the Y-shaped filter 309, and the diaphragm metering pump 304 mainly functions to accurately transport and meter various fluids. The outlet of the diaphragm metering pump 304 is provided with an on-site pressure gauge 311, which can observe the output pressure of the diaphragm metering pump 304 at any time. The outlet of the output pipeline is provided with a check valve, which prevents backflow after the output spray water stops. The outlet of the check valve is provided with a high-temperature oil vapor control valve 313, which functions to prevent the backflow of high-temperature oil vapor in the thermal cracking reactor 10 after stopping. The inlet of the spray gun quick connector 314 is connected with the second conveying pipeline 306, and the main function of the spray gun quick connector 314 is to realize pipeline connection or disconnection without tools.

[0026] In some embodiments, the feeding and slagging device includes a feeding and slagging screw 201, one end of which extends into the reaction kettle 10 and is connected to the reaction kettle 10 through a dynamic and static sealing sleeve; the feeding and slagging screw 201 includes a feeding and slagging cylinder, a feeding and slagging rotating shaft sleeved in the feeding and slagging cylinder, and a feeding and slagging spiral blade sleeved outside the feeding and slagging rotating shaft. Further, a feeding port and an oil outlet are formed above the side of the feeding and slagging cylinder, and a slagging port is formed below the side of the feeding and slagging cylinder. The feeding and slagging device further includes a feeding screw conveyor 202 connected to the feeding port, and a slagging screw 203 connected to the slagging port.

[0027] A dynamic and static sealing sleeve is arranged in the middle of the right end plate of the thermal cracking reaction kettle 10, the feeding and slagging screw 201 extends into the high-temperature oil vapor outlet, the feeding and slagging screw 201 rotates clockwise to feed, and rotates counterclockwise to slag after the thermal cracking is completed. A feeding port is vertically arranged in the middle of the feeding and slagging screw 201 and is connected to the discharge port of the feeding screw conveyor 202 to transport the thermal cracking material into the thermal cracking reaction kettle 10. An oil vapor outlet is vertically arranged on the right side of the feeding and slagging screw 201 and is connected to the high-temperature oil vapor outlet control valve. A driving device is arranged at the right end of the feeding and slagging screw 201, and a slagging port is arranged at the lower part of the right cylinder of the feeding and slagging screw 201 and is connected to the feeding port of the slagging screw 203.

[0028] In some embodiments, the semi-continuous waste tire thermal cracking feeding and slagging equipment is connected to the oil vapor treatment device through the oil outlet. The oil vapor treatment device includes a catalytic separation tower 401, a heavy component cooling oil collection buffer tank 402 connected to the bottom of the catalytic separation tower 401, a vertical condenser 403 connected to the top of the catalytic separation tower 401, and a light component cooling oil collection buffer tank 404 connected to the vertical condenser 403. The high-temperature oil vapor outlet control valve outlet is connected to the first-stage high-temperature oil vapor conveying pipeline, and the high-temperature oil vapor enters the high-temperature oil vapor inlet of the catalytic separation tower 401. The high-temperature oil vapor outlet of the catalytic separation tower 401 is arranged in the middle of the upper head, the heavy component cooling oil outlet is arranged in the lower head and is connected to the heavy component cooling oil collection buffer tank 402, and the entering heavy component cooling oil is conveyed to the peripheral oil tank by an external oil pump for storage. The oil vapor conveyed by the high-temperature oil vapor outlet of the catalytic separation tower 401 enters the vertical condenser 403 through the second-stage high-temperature oil vapor conveying pipeline, enters the oil vapor inlet, and is provided with a condensing tube inside. The cooling oil outlet is arranged in the lower head, the cooled cooling oil enters the light component collection buffer tank, and a non-condensable cracking gas separation tank 405 is vertically arranged at the right upper part of the tank body. The collected light component cooling oil is conveyed to the peripheral storage tank by an external oil pump for storage.

[0029] The working process of the semi-continuous waste tire thermal cracking feeding and slagging device is as follows:

[0030] The feeding and slagging screw 201 rotates clockwise, and the material is conveyed into the reaction kettle 10 by the feeding and slagging screw 201 for thermal cracking, while the water spraying stripping device at the other end of the reaction kettle 10 sprays water into the reaction kettle 10, and after the thermal cracking is completed, the feeding and slagging screw 201 rotates counterclockwise for slagging.

[0031] The semi-continuous waste tire thermal cracking feeding and slagging device has the following advantages: reliable and safe, steam as a pure and hygienic medium, without worrying about the generation of harmful substances or pollution during operation; simple operation, compared with other heating methods, spraying water into the thermal cracking reaction kettle 10 is more convenient and simple, which can improve the yield of oil products and prevent the coking of the conveying pipeline; good controllability, the pressure and flow of the water spraying stripping can be adjusted and controlled through operation and equipment control, and accurate and reliable control can be achieved according to production needs; environmentally friendly, using water spraying stripping for thermal cracking can avoid pollution emission and reduce the risk of environmental pollution.

[0032] The technical features of the above-described embodiments can be combined arbitrarily, and in order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0033] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A semi-continuous scrap tire thermal pyrolysis feed to dross apparatus, characterized by, The application relates to a semi-continuous waste tyre pyrolysis feeding and slag discharging device. The reaction kettle is an outer spiral type and comprises a reaction kettle barrel and reaction kettle spiral blades arranged along the inner wall of the reaction kettle barrel. The feeding and slag discharging device is connected with one end of the reaction kettle and is used for feeding pyrolysis materials or discharging slag into the reaction kettle. The water spraying stripping device is connected with the other end of the reaction kettle and is used for spraying water into the reaction kettle. The other end of the reaction kettle is provided with a feeding cover, and the middle part of the feeding cover is provided with a rotary joint mounting seat for mounting the rotary joint. The water spraying stripping device further comprises a high-level water storage tank and a diaphragm metering pump.

2. The semi-continuous waste tire thermal pyrolysis feed and slagging apparatus of claim 1, wherein, Along the water conveying direction, a flow control valve, a glass rotor flowmeter and a Y-shaped filter are sequentially arranged on the first conveying pipeline.

3. The semi-continuous waste tire thermal pyrolysis feed and slagging apparatus of claim 1, wherein, Along the water conveying direction, an on-site pressure gauge, an outlet check valve, a high-temperature oil vapor control valve and a spray gun quick connector are sequentially arranged on the second conveying pipeline.

4. The semi-continuous waste tire thermal pyrolysis feed and slagging apparatus of claim 3, wherein, The feeding and slag discharging device comprises a feeding and slag discharging screw machine.

5. The semi-continuous waste tire thermal pyrolysis feed and slagging apparatus of claim 3, wherein, The feeding and slag discharging barrel is provided with a feeding port and an oil outlet above the side surface and is provided with a slag discharging port below the side surface.

6. The semi-continuous waste tire thermal pyrolysis feed and slagging apparatus of claim 1, wherein, The feeding and slag discharging device further comprises a feeding screw conveyor connected with the feeding port and a slag discharging screw machine connected with the slag discharging port.

7. The semi-continuous waste tire thermal pyrolysis feed and out-drag device of claim 6, wherein, The oil vapor treatment device comprises a catalytic separation tower, a heavy component cooling oil collecting buffer tank connected with the bottom of the catalytic separation tower, a vertical condenser connected with the top of the catalytic separation tower and a light component cooling oil collecting buffer tank connected with the vertical condenser.

8. The semi-continuous waste tire thermal pyrolysis feed and slagging apparatus of claim 7, wherein, ​ 9. The semi-continuous waste tire thermal pyrolysis feed and out-drag device of claim 7, wherein, ​ 10. The semi-continuous waste tire thermal pyrolysis feed and slagging apparatus of claim 9, wherein, ​

Images