TWI494352B - A scrap tire pyrolysis equipment and method thereof - Google Patents

Description

Waste tire thermal cracking equipment and method for thermally cracking same

The invention relates to a heating recovery device, in particular to a continuous thermal cracking device for waste tires and a low temperature constant temperature heating method for hot molten salt.

Due to the increasing environmental and health problems caused by waste tires, the use of thermal cracking methods to regenerate related materials in waste tires is one of the most advanced methods currently used to solve the above problems. After the waste tires are cracked by micro-negative pressure, cracked oil and carbon black can be produced for recycling. Since the thermal cracking process needs to be carried out in a state of closed micro-negative pressure, the existing method cannot effectively solve the problem of continuous sealing and heating, and only adopts batch production design, which is easy to cause serious pollution, high energy consumption and low. Performance and other issues.

Generally, the prior art adopts high temperature hot gas to heat cracking, easy coking to hinder heat transfer, reduce cracking effect, and adopt batch production to solve the sealing problem, but after cooling, it is necessary to cool down and then open the cover to clean carbon deposit, which will cause serious environmental pollution if Continuous production can cause pollution due to leakage of oil and gas and carbon black due to poor sealing.

Furthermore, the pyrolysis heat sink disclosed in the Republic of China Bulletin No. M443138 is a method of repeating the cracking action by using a combustible substance generated by cracking as a fuel source. However, the above method cannot produce a quantitative flammable substance, and it is necessary to control the cracking quality with high-precision control equipment, and the construction and maintenance of the high-precision regulating equipment leads to an increase in production cost.

In view of this, one of the objects of the present invention is to mention It is a thermal cracking equipment that can provide a micro-negative pressure continuous process and also reduce pollution and production costs. The thermal cracking apparatus is suitable for thermally cracking a plurality of waste tire fragments, and comprises a receiving device, a feeding device respectively connected to the receiving device, a cracking device, a heating device, and a discharging device.

The receiving device is for receiving the waste tire Debris, and includes a receiving slot. The feeding device is in communication with the receiving groove, and the waste tire fragments enter the feeding device from the receiving groove. The cracking device comprises a cracking furnace connected to the feeding device, and an oil and gas outlet disposed on the cracking furnace. The heating device comprises a hot-melt salt heating furnace, and a heating jacket disposed outside the cracking furnace, the discharging device is in communication with the cracking furnace and includes a carbon black outlet.

Wherein the receiving groove, the feeding device, the crack The furnace is unblocked and the discharge device is in a closed communication.

Another object of the present invention is to provide a The above method for thermally cracking a waste tire thermal cracking apparatus comprises a receiving step, a feeding step, a cracking step, and a discharging step.

The taking step is carried out by the above receiving groove The plurality of waste tire fragments, the feeding step is to cause the plurality of waste tire fragments to enter the feeding device from the receiving groove, the cracking step is to make the plurality of waste tire fragments enter the cracking furnace from the feeding device, and heat-melt The salt heats the cracking furnace to crack the plurality of waste tire fragments in the cracking furnace to generate oil and gas and carbon black. The discharging step is to discharge the carbon black generated by cracking the plurality of waste tire fragments.

The beneficial effect of the present invention is that Tank, the cracking device, the feeding device, and the discharging device The closed communication is such that the waste tire fragments are kept in a sealed state after entering the receiving device, and the pumping process is not required before being sent to the cracking device to achieve a continuous operation process, so that the entire process is completed. Coherent, and use a low temperature constant heating method to shorten the time required for the entire process to complete, thereby reducing production costs.

4‧‧‧Waste tire fragments

5‧‧‧Waste tire thermal cracking equipment

51‧‧‧Receiving device

511‧‧‧ socket

512‧‧‧Airtight valve

513‧‧‧First limit gauge

514‧‧‧second limit gauge

52‧‧‧Feeding device

521‧‧‧First auger

522‧‧‧ delivery port

53‧‧‧Cleaning device

531‧‧‧ cracking furnace

532‧‧‧ receiving port

533‧‧‧Second auger

534‧‧‧ Oil and gas exports

535‧‧‧Drainage

54‧‧‧ heating device

541‧‧‧Hot melt salt heating furnace

542‧‧‧heating jacket

55‧‧‧Drawing device

551‧‧‧3rd auger

5511‧‧‧First spiral segment

5512‧‧‧second spiral segment

552‧‧‧ carbon black exports

91‧‧‧Acceptance steps

92‧‧‧Feeding steps

93‧‧‧Cleaning step

94‧‧‧Drawing steps

1 is a schematic view showing a preferred embodiment of the waste tire thermal cracking apparatus of the present invention; FIG. 2 is a schematic view for assistance in explaining FIG. 1; and FIG. 3 is a flow chart showing the preferred method of thermal cracking of the waste tire of the present invention. Example.

The detailed description of the preferred embodiments of the present invention will be apparent from the detailed description of the preferred embodiments.

1 and 2 show a preferred embodiment of the waste tire thermal cracking apparatus 5 of the present invention. The waste tire thermal cracking apparatus 5 is suitable for thermally cracking a plurality of waste tire fragments 4, and includes a receiving device 51. The feeding device 52 of the receiving device 51, a cracking device 53 that communicates with the feeding device 52, a pair of heating devices 54 that heat the cracking device 53, and a discharging device 55 that communicates with the cracking device 53. It should be particularly noted that the receiving device 51, the feeding device 52, the cracking device 53, and the discharging device 55 are in a closed communication.

Referring to FIG. 3, a preferred embodiment of the method for thermally cracking a waste tire of the present invention comprises a receiving step 91, a feeding step 92, a cracking step 93, and a discharging step 94.

Referring to Figures 1 to 3, in the taking step 91, The receiving device 51 receives the waste tire chip 4, and the receiving device 51 includes a receiving groove 511, a gas tight valve 512 for controlling the blanking of the scrap tire fragments 4 in the receiving groove 511, and a longitudinal direction. A first limit gauge 513 and a second limit gauge 514 are disposed in the receiving slot 511 for detecting the height of the contents in the receiving slot 511.

When the first limit gauge 513 acts, the airtightness The valve 512 is opened to perform the blanking action of the waste tire chip 4, and when the second limiter 514 is actuated, the airtight valve 512 is closed to stop the blanking action. It is worth mentioning that the first and second limit gauges 513 and 514 can be the photodetector when the plurality of discarded tire fragments 4 are gradually stacked to the height of the first and second limit gauges 513 and 514. The first and second limit gauges 513 and 514 are activated, and the types and types of the first and second limit gauges 513 and 514 are numerous and are familiar to those in the related art and are not the focus of the case. I won't go into details here.

In the feeding step 92, the feeding device is loaded The waste tire chip 4 is fed to the cracker 53. The feeding device 52 communicates with the receiving groove 511, and the waste tire chip 4 enters the feeding device 52 through the receiving groove 511 through the airtight valve 512. The feeding device 52 includes a first auger 521 and a conveying port 522 communicating with the cracking device 53. The first auger 521 is a transverse auger structure and is screwed. A plurality of waste tire chips 4 are input to the cracking device 53.

The cracking device 53 includes a cracking furnace 531, a receiving port 532 disposed at one end of the cracking furnace 531 and communicating with the conveying port 522 of the feeding device 52, a second auger 533 disposed in the cracking furnace 531, and a cracking machine 531 disposed in the cracking furnace 531 An upper oil and gas outlet 534, and a discharge port 535 disposed below the oil and gas outlet 534, the oil and gas outlet 534 is disposed at the other end of the cracking furnace 531 opposite to the receiving port 532. The feeding device 52 has a sealing function to block outside air from entering the cracking furnace 531 of the cracking device 53. Since the cracking furnace 531 adopts an advanced discharge sealing system, the sealing performance of the furnace body is improved, the waste tire fragments 4 are cracked in an oxygen-free (or oxygen-poor) state, and the catalyst is added, thereby not only reducing energy consumption, but also The cracking efficiency can be improved, and the safety production of the cracking furnace 531 is also guaranteed.

The heating device 54 includes a heating furnace 541 and a heating jacket 542 disposed outside the cracking furnace 531. The heating device 54 heats the cracking furnace 531 with a hot molten salt. In the preferred embodiment, a hot-melt salt of about 400 to 500 ° C is used to provide a constant temperature and a large specific heat source instead of the high temperature and low specific heat gas used in general, and the hot melt salt is added as a catalyst to reduce the heat of cracking and improve the heating. The efficiency and cracking at low temperature can reduce the harmful substances formed by high temperature, and reduce the harm to human body and environment. The hot molten salt heated by the heating furnace 541 forms a flow state and flows into the heating jacket 542 to heat the waste tire fragments 4 in the cracking furnace 531 to perform the cracking step 93 to generate the waste tire fragments 4. Thermal cracking and formation of oil and gas and carbon black.

This discharge step 94 is a process in which the waste tire chips 4 are thermally cracked to form carbon black, which is discharged by the discharge device 55. The discharge device 55 includes a third auger 551 in communication with the discharge port 535 of the cracking furnace 531, and a carbon black outlet 552. The third auger 551 is a transverse auger structure, and has a first spiral segment 5511 below the discharge port 535, and a second spiral segment 5512 connecting the first spiral segment 5511. The black outlet 552 is located at the first and second snails Above the junction of the segments 5511, 5512, the first and second spiral segments 5511, 5512 create opposite push directions for delivering carbon black to the carbon black outlet 552 located above.

In actual implementation, the oil and gas formed by thermal cracking is discharged from the oil and gas outlet 534 on the cracking furnace 531, and the carbon black is discharged through the carbon black outlet 552, and the carbon black is airtight by using the outlet above the tail of the conveyor 551. . In order to prevent outside air from entering the cracking furnace 531 via the carbon black outlet 552.

Through the description of the above embodiments, it can be seen that the present case does have the following enhancements:

First, the process is continuous

By the closed communication method, the cut waste tire fragments 4 are kept in a sealed state after entering the receiving device 51, and the pumping process is not required before being sent to the cracking furnace 531, so that the entire process is completed. Coherent, reducing the time required to complete the entire process.

2. Low temperature constant temperature and catalytic technology for thermal cracking

Since the heating device 54 heats the cracking furnace 531 with a hot molten salt, the temperature of the thermal cracking can be stably maintained at about 400 to 500 ° C, and a constant temperature and a large specific heat source can be provided instead of the high temperature and low specific heat generally used. Heating the gas and adding the catalyst can reduce the heat of cracking, improve the heating efficiency, and crack the low temperature to reduce the harmful substances formed at high temperatures, and reduce the harm to the human body and the environment.

Third, the use of oxygen-free (or oxygen-depleted) and catalytic micro-negative pressure thermal cracking technology

The cracking furnace 531 improves the sealing performance of the furnace body by adopting an advanced and discharging sealing system, and the waste tire fragments 4 are cracked in an oxygen-free (or oxygen-poor) state, and the catalyst is added, thereby not only reducing energy consumption, but also Improves cracking efficiency and also The safe production of the cracking furnace 531 is ensured.

Fourth, reduce production costs

As described above, the present invention can achieve a stable continuous process, maintain a stable thermal cracking temperature, and improve the smoothness of the discharge, so that the entire process can be coherent and the pollution can be eliminated and the time required for the entire process to be completed can be shortened. reduce manufacturing cost.

In summary, the waste tire thermal cracking device and the thermal cracking method of the present invention pass through a closed continuous process, maintain a stable thermal cracking temperature, and improve the smoothness of the discharge, so that the entire process is coherent and the pollution can be eliminated and the entire process can be shortened. The time required for the process to be completed, thereby reducing production costs and meeting environmental requirements, can indeed achieve the object of the present invention.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

4‧‧‧Waste tire fragments

5‧‧‧Waste tire thermal cracking equipment

51‧‧‧Receiving device

511‧‧‧ socket

512‧‧‧Airtight valve

513‧‧‧First limit gauge

514‧‧‧second limit gauge

52‧‧‧Feeding device

521‧‧‧First auger

522‧‧‧ delivery port

53‧‧‧Cleaning device

531‧‧‧ cracking furnace

532‧‧‧ receiving port

533‧‧‧Second auger

534‧‧‧ Oil and gas exports

535‧‧‧Drainage

54‧‧‧ heating device

541‧‧‧Hot melt salt heating furnace

542‧‧‧heating jacket

55‧‧‧Drawing device

551‧‧‧3rd auger

5511‧‧‧First spiral segment

5512‧‧‧second spiral segment

552‧‧‧ carbon black exports

Claims (11)

A waste tire thermal cracking device is suitable for thermally cracking a plurality of waste tire fragments, and comprises: a receiving device for receiving the waste tire fragments, and comprising a receiving groove; and a feeding device communicating with the receiving groove The waste tire scraps enter the feeding device from the receiving groove; a cracking device includes a cracking furnace connected to the feeding device, and an oil and gas outlet disposed on the cracking furnace, wherein the waste tire fragments are The feeding device enters the cracking furnace to generate oil and gas and carbon black, and the oil and gas is discharged from the oil and gas outlet; a heating device comprises a hot-melt salt heating furnace, and a heating jacket disposed outside the cracking furnace; a discharge device connected to the cracking furnace and comprising a carbon black outlet, wherein the carbon black after the cracking of the plurality of waste tire fragments is discharged from the carbon black outlet; wherein the receiving tank, the feeding device, the cracking furnace, And the discharge device is in a closed communication; wherein the receiving device further comprises a gas tight valve for controlling the blanking of the waste tire fragments in the receiving groove, and the longitudinal interval Disposed in the receiving groove of the receiving vessel for detecting the contents of a first height and a second limiting stop counter count, the count is above a first limit of the second meter limit. The waste tire thermal cracking apparatus according to claim 1, wherein the feeding device comprises a first auger, and a conveying port communicating with the cracking furnace, and the first auger is a horizontal The spiral auger structure is placed and the plurality of waste tire chips are fed into the cracking furnace in a screw pushing manner. The waste tire thermal cracking apparatus according to claim 2, wherein the cracking device further comprises a receiving port disposed at one end of the cracking furnace and connected to the conveying port, and a second disposed in the cracking furnace An auger, and a discharge port disposed below the oil and gas outlet, the oil and gas outlet being disposed at the other end of the cracking furnace opposite to the receiving port. The waste tire thermal cracking apparatus according to claim 3, wherein the hot-melt salt heating furnace has a hot-melt salt, and the heated hot-melt salt flows into the heating jacket from the hot-melt salt heating furnace. Returning to the hot-melt salt heating furnace, the heating jacket is coated on the outside of the cracking furnace to heat the plurality of waste tire fragments in the cracking furnace, and the plurality of waste tire fragments are pyrolyzed to generate oil and gas. And discharged at the oil and gas outlet, and the residue after the waste tire fragments are cracked is discharged from the discharge port. The waste tire thermal cracking apparatus according to claim 4, wherein the discharge device further comprises a third auger communicating with the discharge port, the third auger being a transverse auger a material structure having a first spiral segment below the discharge opening, a second spiral segment connecting the first spiral segment, the carbon black outlet It is located above the junction of the first and second spiral segments, and the first and second spiral segments have opposite push directions. A method for thermally cracking a waste tire thermal cracking apparatus according to claim 1 of the patent application, which is suitable for thermally cracking a plurality of waste tire fragments, and comprising: a receiving step of receiving the plurality of waste tire fragments by the receiving groove a feeding step of causing the plurality of waste tire fragments to enter the feeding device from the receiving groove; a cracking step of causing the plurality of waste tire chips to enter the cracking furnace from the feeding device, and heating the cracking furnace with hot molten salt , the plurality of waste tire fragments in the cracking furnace are cracked to generate oil and gas and carbon black; and a discharging step, the carbon black generated by cracking the plurality of waste tire fragments is discharged. The waste tire thermal cracking method according to claim 6, wherein in the cracking step, the cracking furnace is heated by a hot melt salt at 400 to 500 °C. The waste tire thermal cracking method according to claim 7, wherein in the receiving step, the plurality of waste tire fragments in the receiving groove are acted upon by the first limit gauge, the airtight valve is opened The waste tire chip blanking action is entered into the feeding device, and when the second limit gauge is actuated, the airtight valve is closed to stop the plurality of waste tire fragments from being blanked. A waste material thermal cracking device is suitable for thermally cracking a plurality of waste material fragments, and comprises: a receiving device for receiving the waste material debris, and comprising a receiving groove; a feeding device communicating with the receiving groove The waste material debris enters the feeding device from the receiving groove; a cracking device includes a cracking furnace connected to the feeding device, and an oil and gas outlet disposed on the cracking furnace, the waste material debris is passed through the The feeding device enters the cracking furnace to generate oil and gas and carbon black, and the oil and gas is discharged from the oil and gas outlet; a heating device; and a discharging device connected to the cracking furnace and including a carbon black outlet, the plurality of wastes The carbon black after the cracking of the material fragments is discharged from the carbon black outlet; wherein the receiving tank, the feeding device, the cracking furnace, and the discharging device are in a closed communication; wherein the discharging device further comprises a a third auger having a first spiral segment and a second spiral segment connecting the first spiral segment, the carbon black outlet being located at the first and second Above the junction of the rotary section, the first and second helical segments of pushing the opposite direction for the carbon black to the carbon black outlet located above the feed. The waste material thermal cracking apparatus according to claim 9, wherein the third screw conveyor of the discharge device is A transverse auger structure is coupled to the discharge port, the first spiral section of the third auger being located below the discharge port. A method for thermal cracking of a waste material thermal cracking apparatus according to claim 9 of the patent application, which is suitable for thermally cracking a plurality of waste material fragments, and comprising: a receiving step of receiving the plurality of waste material fragments by the receiving groove a feeding step of causing the plurality of waste material fragments to enter the feeding device from the receiving groove; a cracking step of causing the plurality of waste material fragments to enter the cracking furnace from the feeding device, and heating the cracking furnace to cause the cracking The plurality of waste material fragments in the furnace are subjected to cracking to generate oil and gas and carbon black; and a discharging step, the carbon black generated by cracking the plurality of waste material fragments is discharged, wherein the discharging device further comprises a third auger The third auger has a first spiral segment and a second spiral segment connecting the first spiral segment, the carbon black outlet is located above the junction of the first and second spiral segments, the first and second The spiral section produces an opposite push direction for delivering carbon black to the carbon black outlet located above.