阅读说明：本技术 改变炭黑结构用于轮胎制造的废轮胎裂解加工方法和系统 (Scrap tire pyrolysis processing method and system for tire manufacturing by changing carbon black structure ) 是由 姜承法 朱业胜 郭庆民 于 2020-04-27 设计创作，主要内容包括：本发明公开了一种改变炭黑结构用于轮胎制造的废轮胎裂解加工方法和系统,该方法包括：废旧轮胎预处理、裂解活化和炭黑深加工；其中,废旧轮胎预处理包括：将废旧轮胎破碎成胶块；裂解活化包括：裂解碳化和活化扩孔；裂解碳化的温度为500℃-550℃,得到固态炭黑；活化扩孔为采用550-600℃水蒸气将固态炭黑中有机物裂解物质残留凝结带出。在本方案中,其裂解过程采用创新技术,区别现有技术的第一步是裂解碳化(500-550℃),以除去易挥发物质并使残留的高分子碳氢化合物分解；第二步是超高温水蒸气活化扩孔(550-600℃),有机物裂解物质残留将随水分子凝结蒸气带出,水分子碳化过程可将裂解炭黑萎缩的微孔起到扩孔作用,解决了裂解炭黑结构低的问题。(The invention discloses a scrap tire cracking processing method and a scrap tire cracking processing system for tire manufacturing by changing a carbon black structure, wherein the method comprises the following steps: pretreating waste tires, carrying out cracking activation and deep processing of carbon black; wherein, junked tire preliminary treatment includes: crushing the waste tires into rubber blocks; the cracking activation comprises the following steps: cracking, carbonizing and activating hole expanding; the temperature of cracking carbonization is 500-550 ℃, and solid carbon black is obtained; the step of activating and reaming is to condense and take out the organic matter cracking substance residue in the solid carbon black by adopting water vapor with the temperature of 550-600 ℃. In the scheme, an innovative technology is adopted in the cracking process, and the first step of the prior art is cracking carbonization (500-; the second step is that ultra high temperature water vapor activates reaming (550 + 600 ℃), and organic matter schizolysis material remains will take out along with the water molecule condensation steam, and the hydrone carbonization process can play the reaming effect with the atrophic micropore of schizolysis carbon black, has solved the low problem of schizolysis carbon black structure.)

1. A scrap tire cracking processing method for changing the structure of carbon black for tire manufacturing is characterized by comprising the following steps: pretreating waste tires, carrying out cracking activation and deep processing of carbon black;

the waste tire pretreatment comprises the following steps: crushing the waste tires into rubber blocks;

the cleavage activation comprises: cracking, carbonizing and activating hole expanding;

the temperature of the cracking carbonization is 500-550 ℃, so that solid carbon black is obtained;

and the step of activating and reaming is to condense and take out the organic matter cracking substance residue in the solid carbon black by adopting water vapor at the temperature of 550-600 ℃.

2. The scrap tire cracking process for tire manufacturing with modified carbon black structure as claimed in claim 1, wherein the crushing of the scrap tires into rubber mass comprises: the steel wire-containing waste tire is crushed into rubber blocks.

3. The scrap tire cracking process for tire manufacturing with modified carbon black structure as claimed in claim 1, wherein the crushing of the scrap tires into rubber mass comprises: and crushing the waste tires into rubber blocks of 30-50 mm.

4. The scrap tire cracking process for tire manufacturing with modified carbon black structure of claim 1, wherein the cracking activation further comprises: condensing oil gas and combusting in a combustion zone;

the oil gas is condensed to condense organic matter cracking substance oil gas brought out along with water molecule condensation steam in the activation reaming, so that cracking oil and non-condensable gas are obtained;

the combustion zone combustion comprises: combusting the oil-containing water and the non-condensable gases in the pyrolysis oil to provide heating for the pyrolysis carbonization and the activation reaming.

5. The scrap tire cracking process for tire manufacturing with modified carbon black structure of claim 4, wherein the cracking activation further comprises: stabilizing the pressure of non-condensable gas and atomizing oil-containing water;

the non-condensable gas is subjected to pressure stabilization treatment after the non-condensable gas is obtained in the oil gas condensation, and the non-condensable gas subjected to pressure stabilization is used for combustion in the combustion area;

and atomizing the oily water in the pyrolysis oil after the pyrolysis oil is obtained in the oil-gas condensation, and reusing the atomized oily water in the combustion area for combustion.

6. The scrap tire cracking process for tire manufacturing with modified carbon black structure of claim 1, wherein the carbon black further processing comprises: grinding and modifying integrated process;

the grinding and modifying integrated process comprises the following steps: while feeding the cooled and magnetically separated cracked carbon black to the inlet of the mill, proportionally adding an activation modifier to the inlet of the mill, and feeding hot air into the mill to maintain the temperature of the cracked carbon black.

7. A scrap tire pyrolysis processing system for modifying the structure of carbon black for use in tire manufacture, comprising: a waste tire pretreatment device, a cracking activation device and a carbon black deep processing device;

the junked tire preprocessing device includes: a slicing device (3) for breaking the waste tires into rubber blocks;

the lysis activation device comprises: a cracking carbonization furnace (5) and an activation hole expanding furnace (6);

the preset working temperature of the cracking carbonization furnace (5) is 500-550 ℃;

the activation hole expanding furnace (6) is used for taking out organic matter cracking substance residues in the solid carbon black through water vapor condensation, and the preset working temperature is 550-600 ℃.

8. The scrap tire cracking process system for tire manufacturing with modified carbon black structure as claimed in claim 7, wherein the cracking activating means further comprises: an oil gas condenser (7), an oil-water separator of pyrolysis oil (8), an atomizer (11), a pressure stabilizing gas holder (13) and a combustion area (14);

the gas outlet of the oil-gas condenser (7) is connected to the inlet of the pressure-stabilizing gas holder (13), and the outlet of the pressure-stabilizing gas holder (13) is connected to the combustion area (14);

the liquid outlet of the oil-gas condenser (7) is connected to the inlet of the oil-water separator, the water outlet of the oil-water separator is connected to the inlet of the atomizer (11), and the outlet of the atomizer (11) is connected to the combustion area (14).

9. The scrap tire cracking process system for tire manufacturing with modified carbon black structure as claimed in claim 7, wherein the carbon black further processing apparatus comprises: a grinding and modifying integrated device (26);

the integrated polishing and modifying device (26) comprises: the device body, set up in the carbon black feed mechanism of device body, modifier feed mechanism, grind mechanism and hot-blast mechanism.

10. The scrap tire cracking process system for tire manufacturing with modified carbon black structure according to claim 7, wherein the cracking carbonization furnace (5) and the activation broaching furnace (6) are provided in the same burner.

Technical Field

The invention relates to the technical field of comprehensive utilization of solid waste metal, in particular to a waste tire cracking processing method and a waste tire cracking processing system for tire manufacturing by changing a carbon black structure.

Background

According to the statistics of the China rubber industry Association, the sales of Chinese automobiles in 2018 are accumulated to achieve 2808 thousands of automobiles, and under the influence of objective factors such as the year-by-year increase of automobile keeping quantity, the scrapping of automobiles, the replacement of automobile models and the like, the quantity of waste tires generated in 2018 is about 1400 million tons, but the marketization treatment rate is only about 50%, and nearly 700 million tons of waste tires are not effectively treated every year. The waste tires are stored in an open air stacking mode, and long-term large stacking can not only cause fire by spontaneous combustion, but also easily breed mosquitoes and flies to spread diseases; the waste tires also have strong heat resistance, mechanical resistance and degradation resistance, and the black pollution caused by the waste tires is a global treatment problem at present. Thermal cracking is an important means for 'drying and squeezing' waste tires, is also an ultimate solution for recycling the waste tires in the future, can effectively reduce the waste tires, and is dedicated to research, application and popularization of the technology in China and developed countries.

The current situation of thermal cracking of waste tires at home and abroad is still in a primary stage, most of the waste tires are subjected to the traditional oil cracking process, the waste tires can be recycled only by recovering part of cracking oil, waste steel wires and a small amount of combustible gas, cracking carbon residues cannot be treated, the environment is polluted, and disordered competition and waste of resources are caused; although chinese patents also disclose several thermal cracking treatment techniques for scrap tires such as: a preparation method of regenerated reinforcing carbon black for rubber reinforcement; a tire carbon black recycling method; a method and a device for intermittently and continuously recovering waste tires to refine activated carbon; the said technology only carries out simple treatment on the cracked carbon black, and the important factor affecting the cracked carbon black is neglected in the cracking process, i.e. the carbon black structure is improved. The structure is the size distribution of the aggregates and the void volume within the aggregates, the more internal void volume, the higher the structure of the carbon black. The micropores of the pyrolytic carbon are closed during the cracking process, and the micropores are most important for adsorption. The cracking carbon black is not carbonized and has a lower structure for activating and reaming treatment in the cracking process, so that the cracking carbon black is not easy to be used as reinforcing carbon black and can only be used for processing low-grade rubber products. The cracking carbon black has poor economical efficiency and market application and is difficult to popularize, so that the development of the waste tire cracking industry is restricted.

Disclosure of Invention

In view of the above, the invention provides a scrap tire cracking processing method for changing a carbon black structure and used for tire manufacturing, innovation is made on the process technology, a cracking carbonization technology and a high-temperature steam activation hole expanding technology are combined in the cracking process, and a grinding and modification integrated technology is adopted in the carbon black deep processing for secondary modification and quality improvement, so that the structure of the waste tire cracking carbon black is obviously changed, the quality of a cracking product is obviously improved, the carbon black can be used as reinforcing carbon black for manufacturing a new tire, and the recycling of the waste tire in the true sense is realized.

The invention also provides a scrap tire cracking processing system for manufacturing tires by applying the method and changing the structure of the carbon black.

In order to achieve the purpose, the invention provides the following technical scheme:

a scrap tire pyrolysis process for modifying the structure of carbon black for tire manufacture comprising: pretreating waste tires, carrying out cracking activation and deep processing of carbon black;

the waste tire pretreatment comprises the following steps: crushing the waste tires into rubber blocks;

the cleavage activation comprises: cracking, carbonizing and activating hole expanding;

the temperature of the cracking carbonization is 500-550 ℃, so that solid carbon black is obtained;

and the step of activating and reaming is to condense and take out the organic matter cracking substance residue in the solid carbon black by adopting water vapor at the temperature of 550-600 ℃.

Preferably, the crushing of the waste tires into rubber blocks comprises: the steel wire-containing waste tire is crushed into rubber blocks.

Preferably, the crushing of the waste tires into rubber blocks comprises: and crushing the waste tires into rubber blocks of 30-50 mm.

Preferably, the lytic activation further comprises: condensing oil gas and combusting in a combustion zone;

the oil gas is condensed to condense organic matter cracking substance oil gas brought out along with water molecule condensation steam in the activation reaming, so that cracking oil and non-condensable gas are obtained;

the combustion zone combustion comprises: combusting the oil-containing water and the non-condensable gases in the pyrolysis oil to provide heating for the pyrolysis carbonization and the activation reaming.

Preferably, the lytic activation further comprises: stabilizing the pressure of non-condensable gas and atomizing oil-containing water;

the non-condensable gas is subjected to pressure stabilization treatment after the non-condensable gas is obtained in the oil gas condensation, and the non-condensable gas subjected to pressure stabilization is used for combustion in the combustion area;

and atomizing the oily water in the pyrolysis oil after the pyrolysis oil is obtained in the oil-gas condensation, and reusing the atomized oily water in the combustion area for combustion.

Preferably, the carbon black further processing comprises: grinding and modifying integrated process;

the grinding and modifying integrated process comprises the following steps: while feeding the cooled and magnetically separated cracked carbon black to the inlet of the mill, proportionally adding an activation modifier to the inlet of the mill, and feeding hot air into the mill to maintain the temperature of the cracked carbon black.

A scrap tire cracking process system for modifying the structure of carbon black for use in tire manufacture, comprising: a waste tire pretreatment device, a cracking activation device and a carbon black deep processing device;

the junked tire preprocessing device includes: the slicing device is used for crushing the waste tires into rubber blocks;

the lysis activation device comprises: a cracking carbonization furnace and an activation hole expanding furnace;

the temperature of the cracking carbonization furnace is 500-550 ℃, so that solid carbon black is obtained;

the activation hole expanding furnace is used for carrying out condensation and carrying out of the organic matter cracking substance residue in the solid carbon black by adopting water vapor at the temperature of 550-600 ℃.

Preferably, the lysis activating means further comprises: the system comprises an oil gas condenser, an oil-water separator for pyrolysis oil, an atomizer, a pressure stabilizing gas holder and a combustion area;

the gas outlet of the oil-gas condenser is connected with the inlet of the pressure-stabilizing gas holder, and the outlet of the pressure-stabilizing gas holder is connected with the combustion area;

the liquid outlet of the oil-gas condenser is connected with the inlet of the oil-water separator, the water outlet of the pyrolysis oil-water separator is connected with the inlet of the atomizer, and the outlet of the atomizer is connected with the combustion area.

Preferably, the carbon black deep processing device comprises: grinding and modifying the integrated device;

the grinding and modifying integrated device comprises: the device body, set up in the carbon black feed mechanism of device body, modifier feed mechanism, grind mechanism and hot-blast mechanism.

Preferably, the pyrolysis carbonization furnace and the activation reaming furnace are arranged in the same burner.

According to the technical scheme, the method for cracking and processing the waste tire by changing the carbon black structure for manufacturing the tire adopts the grinding and modifying integrated machine in the carbon black deep processing link, the carbon black material is conveyed to the inlet of the grinding machine, the activating modifier is added into the inlet of the grinding machine by the metering pump configured by the system according to the proportion, a proper amount of hot air is supplemented to the feeding system to keep the temperature of the material, the rotor of the grinding machine (mechanical) plays a role in high-speed stirring in the modification process, the temperature (80-100 ℃) generated by friction can meet the modification temperature, the process has the advantages of few links, small investment, simplicity in operation, high activating and modifying coating rate, and the product quality can meet the requirement of reinforcing carbon black, and can reach the standard of cracking carbon black of the waste tire for manufacturing the tire. In particular, the cracking process adopts an innovative technology, and the first step which is different from the above technology is cracking carbonization (500-; the second step is ultra-high temperature water vapor activation hole expansion (550-; and thirdly, a grinding and modification integrated process is adopted in the deep processing of the cracking carbon black, so that the activity of the cracking carbon black is further increased. The method ensures that the cracked carbon black of the waste tires achieves the effect of upgrading and utilizing, the technical indexes can reach the standards of N660 and N330, and the method can be used for the base part, the side wall and the transition layer of the tires and realizes the real recycling of the waste tires.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic flow diagram of a scrap tire cracking process for tire manufacture with modified carbon black structure according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a scrap tire cracking processing system for tire manufacturing, in which the carbon black structure is changed according to an embodiment of the present invention.

Wherein, 1 is a waste tire, 2 is a cleaning device, 3 is a slicing device, and 4 is a feeding system; 5 is a cracking carbonization furnace, 6 is an activation hole expanding furnace, 7 is an oil gas condenser, 8 is cracking oil, 9 is a finished oil tank, 10 is oily water, 11 is an atomizer, 12 is non-condensable gas, 13 is a pressure stabilizing gas cabinet, 14 is a combustion area, 15 is combustible gas, 16 is a high-temperature water vapor generator, 17 is softened water, 18 is a waste heat utilization device, and 19 is a flue gas purification device; 20 is a slag extractor, 21 is a solid cooling system, 22 is a magnetic separation system, 23 is a steel wire, 24 is a steel wire briquetting machine, 25 is cracking carbon black, 26 is a grinding and modifying integrated device, 27 is a granulation drying system, 28 is reinforcing carbon black, and 29 is used for manufacturing a new tire.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The method for cracking and processing the waste tire by changing the carbon black structure for manufacturing the tire, provided by the embodiment of the invention, comprises the following steps: pretreating waste tires, carrying out cracking activation and deep processing of carbon black;

wherein, junked tire preliminary treatment includes: crushing the waste tires into rubber blocks;

the cracking activation comprises the following steps: cracking, carbonizing and activating hole expanding;

the temperature of cracking carbonization is 500-550 ℃, and solid carbon black is obtained;

the step of activating and reaming is to condense and take out the organic matter cracking substance residue in the solid carbon black by adopting water vapor with the temperature of 550-600 ℃.

From the technical scheme, the cracking process of the waste tire cracking processing method for changing the carbon black structure and used for tire manufacturing adopts an innovative technology, and the first step of the method is cracking carbonization (500-550 ℃) to remove volatile substances and decompose residual high molecular hydrocarbon, which is different from the prior art; the second step is that ultra high temperature water vapor activates reaming (550 + 600 ℃), and organic matter schizolysis material remains will take out along with the water molecule condensation steam, and the hydrone carbonization process can play the reaming effect with the atrophic micropore of schizolysis carbon black, has solved the low problem of schizolysis carbon black structure. The method ensures that the cracked carbon black of the waste tires achieves the effect of upgrading and utilizing, the technical indexes can reach the standards of N660 and N330, and the method can be used for the base part, the side wall and the transition layer of the tires and realizes the real recycling of the waste tires.

Preferably, the method for breaking the waste tires into rubber blocks comprises the following steps: the steel wire-containing waste tire is crushed into rubber blocks. The former crocus and the magnetic force deironing of some adoption of prior art not only invest in big but also consume energy very high, because rubber is bad heat conductor, does not have the micelle power consumption of metal steel wire heat conduction higher. The scheme adopts a process without removing steel wires, the cracking process rotates along with the thermal cracking furnace, and the steel wires run forwards to play a role in cleaning cokes and preventing wall adhesion.

Further, break the junked tire into the rubber block, include: the waste tires are crushed into rubber blocks of 30mm to 50 mm. Its advantage is: compared with other processes for removing steel wires with the thickness of less than 15mm, the process has the advantages that firstly, links for further crushing rubber blocks are reduced, and power consumption is reduced; secondly, the heat transfer of the steel wire is faster in the rubber thermal cracking process, the rubber is a poor heat conductor, and the removal of the steel wire is beneficial to reducing the heat energy consumption in the waste tire cracking process; thirdly, the steel wire moves forwards along the furnace wall in the thermal cracking process, and the effect of cleaning the furnace wall to prevent coking and wall sticking in the thermal cracking process can be achieved. The waste tires are crushed into rubber blocks with proper sizes, which is beneficial to achieving better cracking effect so as to obtain solid cracking products with better cracking effect.

In this embodiment, the lytic activation further comprises: condensing oil gas and combusting in a combustion zone;

condensing the oil gas to condense the organic matter cracked substance oil gas carried out along with the water molecule condensed steam in the activation reaming to obtain cracked oil and non-condensable gas;

the combustion zone combustion comprises: and combusting oil-containing water and non-condensable gas in the pyrolysis oil to provide heating for pyrolysis carbonization and activation of hole expansion. So set up, when make full use of resource, solved the problem of waste water in the production process.

In another embodiment of this embodiment, the cleavage activation further comprises: stabilizing the pressure of non-condensable gas and atomizing oil-containing water;

the non-condensable gas is subjected to pressure stabilization treatment after the non-condensable gas is obtained in oil gas condensation, and the non-condensable gas subjected to pressure stabilization is used for combustion in a combustion area;

atomizing the oil-containing water to obtain the pyrolysis oil in oil gas condensation, atomizing the oil-containing water in the pyrolysis oil, and using the atomized oil-containing water for combustion in a combustion area. By the design, the cracked oil gas product is fully utilized, the energy consumption of a combustion area is reduced, and the energy saving performance of the process is improved.

In this scheme, carbon black deep processing includes: grinding and modifying integrated process;

the grinding and modifying integrated process comprises the following steps: feeding the cooled and magnetically separated cracked carbon black to the inlet of a grinder, adding an activation modifier to the inlet of the grinder in proportion, and feeding hot air into the grinder to keep the temperature of the cracked carbon black; moreover, the temperature (80-100 ℃) generated by friction can meet the modification temperature by virtue of high-speed stirring action in the modification process. By the design, the process links are few, the investment is small, the operation is simple, the activation modification coating rate is high, the product quality can meet the requirement of reinforcing carbon black, and the standard of waste tire cracking carbon black for tire manufacturing can be achieved.

An embodiment of the present invention further provides a scrap tire cracking processing system for tire manufacturing by changing a carbon black structure, as shown in fig. 2, including: a waste tire pretreatment device, a cracking activation device and a carbon black deep processing device;

the junked tire preprocessing device includes: a slicing device 3 for breaking the waste tires into rubber blocks;

the cracking activation device comprises: a cracking carbonization furnace 5 and an activation hole expanding furnace 6;

the temperature of the cracking carbonization furnace 5 is 500-550 ℃, so as to obtain solid carbon black;

the activation hole expanding furnace 6 is used for condensing and taking out organic matter cracking substance residues in the solid carbon black by adopting water vapor at the temperature of 550-600 ℃. The cracking process of the waste tire cracking processing system for tire manufacturing by changing the carbon black structure adopts an innovative technology, and the first step of the prior art is cracking carbonization (500-; the second step is that ultra high temperature water vapor activates reaming (550 + 600 ℃), and organic matter schizolysis material remains will take out along with the water molecule condensation steam, and the hydrone carbonization process can play the reaming effect with the atrophic micropore of schizolysis carbon black, has solved the low problem of schizolysis carbon black structure. The method ensures that the cracked carbon black of the waste tires achieves the effect of upgrading and utilizing, the technical indexes can reach the standards of N660 and N330, and the method can be used for the base part, the side wall and the transition layer of the tires and realizes the real recycling of the waste tires.

In this embodiment, as shown in fig. 2, the cracking activation device further includes: the system comprises an oil gas condenser 7, an oil-water separator for pyrolysis oil 8, an atomizer 11, a pressure-stabilizing gas holder 13 and a combustion area 14;

the gas outlet of the oil-gas condenser 7 is connected with the inlet of a pressure-stabilizing gas holder 13, and the outlet of the pressure-stabilizing gas holder 13 is connected with a combustion area 14;

the liquid outlet of the oil-gas condenser 7 is connected with the inlet of the oil-water separator, the water outlet of the oil-water separator is connected with the inlet of the atomizer 11 (the oil outlet of the oil-water separator is connected with the inlet of the finished oil tank 9), and the outlet of the atomizer 11 is connected with the combustion area 14. So set up, when make full use of resource, solved the problem of waste water in the production process.

Preferably, the cracking carbonization furnace 5 and the activation reaming furnace 6 are arranged in the same burner, so that a good cracking and activation effect is obtained, and the cracking carbonization furnace has the characteristics of reducing energy consumption, simplifying system structure and the like.

Specifically, as shown in fig. 2, the carbon black further processing device further includes: a solid slag cooling system, a magnetic separation system 22 and a grinding modification system;

the import of solid slag tapping cooling system is connected in schizolysis activation device, and solid slag tapping cooling system's exit linkage in magnetic separation system 22's import, and magnetic separation system 22's carbon black exit linkage in grinds modified system. By the design, the activity of the cracking carbon black can be further improved.

The polishing system is a polishing and modifying integrated device 26, comprising: the device body, set up in carbon black feed mechanism, modifier feed mechanism, grinding mechanism and the hot-blast mechanism of device body. Specifically, the cooled and magnetically separated cracked carbon black is conveyed to an inlet of the device body through the carbon black feeding mechanism, the activated modifier is added into the inlet of the device body through the modifier feeding mechanism in proportion, hot air is fed into the device body through the hot air mechanism to keep the temperature of the cracked carbon black, and finally the high-speed stirring effect is achieved through a rotor of the grinding mechanism, so that the temperature (80-100 ℃) generated by friction of the cracked carbon black is convenient to meet the modification temperature. By the design, the process equipment has few links, small investment and simple operation, the activation modification coating rate is high, the product quality can meet the requirement of reinforcing carbon black, and the standard of the waste tire cracking carbon black for tire manufacturing can be reached.

In order to further optimize the above technical solution, as shown in fig. 2, the carbon black further processing device further includes: a granulation drying system 27;

the inlet of the granulation drying system 27 is connected to the grinding modification system. I.e. the standard for achieving the reinforcing carbon black after the grinding modified carbon black passes through the pelletizing and drying system 27.

In this aspect, as shown in fig. 2, the carbon black deep processing apparatus further includes: a wire briquetting machine 24;

the inlet of the steel wire briquetting machine 24 is connected to the steel wire outlet of the magnetic separation system 22, i.e. the steel wires are briquetted for storage, transportation and deep processing.

Specifically, as shown in fig. 2, the lysis activation device further comprises: a high temperature steam generator 16; the inlet of the high-temperature water vapor generator 16 is used for connecting softened water 17, and the outlet of the high-temperature water vapor generator 16 is connected with the water vapor inlet of the activation reaming furnace 6. In the scheme, the high-temperature steam generator 16 can lead the temperature of the high-temperature steam to reach the preset activation temperature of 550-600 ℃ in the environment, and lead the high-temperature steam to be activated and reamed at the preheated activation temperature; the organic matter cracking substance is brought out along with the water molecule condensation steam, and cracking, carbonization and activation of the organic matter in an oxygen-free environment are realized.

In order to further optimize the above technical solution, as shown in fig. 2, the cracking activation apparatus further includes: the waste heat utilization device 18 is characterized in that a flue gas inlet of the waste heat utilization device 18 is connected to a flue gas outlet of the cracking carbonization furnace 5, a flue gas outlet of the waste heat utilization device 18 is connected to the feeding system 4 at the tail end of the waste tire pretreatment device, namely, the waste heat is utilized to preheat materials of the feeding system 4, and the materials are finally discharged through the flue gas purification device 19. By the design, the energy consumption of the cracking activation device can be reduced, and the energy-saving effect of the system is promoted.

The present solution is further described below with reference to specific embodiments:

the invention provides a method for processing waste tire cracking carbon black for tire manufacturing by changing a carbon black structure, wherein a grinding and modification integrated machine is adopted in the process, carbon black materials are conveyed to an inlet of a grinding machine, an activation modifier is added into the inlet of the grinding machine by a metering pump arranged in a system according to a proportion, a proper amount of hot air is supplemented to a feeding system to keep the temperature of the materials, a rotor of the grinding machine is used for stirring at a high speed in the modification process, the temperature (80-100 ℃) generated by friction can meet the modification temperature, the process equipment has few links, small investment and simple operation, the activation modification coating rate is high, the product quality can meet the requirement of reinforcing carbon black, and the standard of waste tire cracking carbon black for tire manufacturing can be met. In particular, the cracking process adopts an innovative technology, and the first step which is different from the above technology is cracking carbonization (500-; the second step is ultra-high temperature water vapor activation hole expansion (550-; and thirdly, a grinding and modification integrated process is adopted in the deep processing of the cracking carbon black, so that the activity of the cracking carbon black is further increased. The method ensures that the cracked carbon black of the waste tires achieves the effect of upgrading and utilizing, the technical indexes can reach the standards of N660 and N330, and the method can be used for the base part, the side wall and the transition layer of the tires and realizes the real recycling of the waste tires.

The following process for processing the waste tire cracking carbon black for tire manufacturing by changing the structure of the carbon black provided by the invention is described in detail in the technical aspect, as shown in fig. 1:

the process technology comprises (1-4) a waste tire pretreatment process technology; (5-19) material carbonization activation reaming, oil gas treatment and combustible gas and flue gas waste heat utilization process technologies in the cracking process; (20-29) carrying out solid cooling treatment, steel wire magnetic separation treatment and secondary upgrading modification in the cracking carbon black deep processing process to reach the standard of reinforcing carbon black for manufacturing new tires.

(1-4) waste tire pretreatment process technology: the waste tires in the step 1 refer to all-steel tires and semi-steel tires which are replaced by automobiles; the step 2, cleaning is to clean soil and sand particles on the surface of the waste tire so as to reduce impurities and reduce more ash generated after thermal cracking; the slicing in the step 3 is to crush the waste tires into blocks of 30-50 mm, and the blocks enter a feeding system in the step 4 of spiral conveying under the condition that steel wires are not removed; the feeding system in the step 4 is a spiral continuous feeder, and the feeding system in the step 4 continuously inputs the rubber blocks into the cracking area of the rotary cracking kettle in the step 5 for cracking and carbonization.

(5-19) in the cracking process, the materials are carbonized and activated, oil gas is treated, and combustible gas and flue gas waste heat are utilized, wherein the materials cracked and carbonized in the step 5 are pushed to a high-temperature steam activation area of a cracking kettle in the step 6 along with a shoveling plate in the kettle to be activated and reamed; organic matter cracking substances which are cracked and carbonized to escape high-molecular hydrocarbons in the step 5 and are decomposed one by high-temperature steam in the step 6 are carried out with water molecule condensation steam and enter oil gas condensation in the step 7;

the non-condensable gas (8-10%) formed in the condensation process of oil gas condensation in the step 7 is 12 non-condensable gas; the liquid condensed by the oil gas in the step 7 is the pyrolysis oil in the step 8;

the pyrolysis oil in the step 8 is input into the finished oil tank in the step 9;

step 10, atomizing 3-5% of oily water in step 11, and then, burning in a burning area in step 14;

inputting the non-condensable gas (which is the combustible gas in the step 15) in the step 12 into a gas holder in the step 13 for pressure stabilization;

step 13, inputting the gas holder after pressure stabilization into a combustion area in step 14 to heat the cracking kettle for material supply, and step 5, cracking and carbonizing;

the surplus gas in the combustion area in the step 14 is the combustible gas in the step 15;

the 15 th step is that the combustible gas input device is used for heating the 16 th step high-temperature water vapor generator;

the 16 th step of high-temperature water vapor generator is used for activating the 6 th step of hole expansion of the area; the water of the high-temperature water vapor generator in the step 16 is the softened water in the step 17; the flue gas after combustion is used for the waste heat utilization in the step 18;

step 18, waste heat utilization can be used for preheating a 4 th step material system; the flue gas with the waste heat utilization in the step 18 needs to be subjected to flue gas purification in the step 19 and then is discharged after reaching the standard;

the cracking process is different from the traditional oiling process (the cracking temperature is about 420 ℃ generally): the cracking carbonization process of the step 5 is added, and the temperature is controlled to be 500-550 ℃ so as to remove volatile substances and decompose residual high molecular hydrocarbon. The activation reaming process of the step 6 is added, the water vapor (water generator) reaches the preset activation temperature (550-. Because the temperature of the water is increased to 550-600 ℃ and the water is converted into saturated steam, the volume of the water expands about 1600 times, micropores shrinking the cracking carbon black can play a role in expanding pores, and the problem of low structure of the cracking carbon black is solved. In the activation reaming process, organic matter cracking substances which are disassembled one by high-temperature steam are brought out along with water molecule condensation steam and are condensed by oil gas in the step 7 to obtain non-condensable gas in the step 12 and pyrolysis oil in the step 8, the non-condensable gas in the step 12 is supplied to a combustion area in the step 14 for combustion after being stabilized by a gas holder in the step 13, about 3-5% of oily wastewater in the pyrolysis oil in the step 8 enters the combustion area in the step 14 for combustion after being atomized, and the problem of wastewater in the production process is solved. The combustion area of the step 14 mainly provides heating for cracking carbonization of the step 5 and activation reaming of the step 6, and the redundant gas enters the combustible gas of the step 15 after the pressure of the gas holder of the step 13 is stabilized for heating the high-temperature water vapor generator of the step 16. The waste heat utilization of the 18 th step of the flue gas after combustion can preheat the material of the 4 th step feeding system, the combustible gas and the flue gas waste heat of the cracking process of the 5 th step and the activation process of the 6 th step are fully utilized by the process, and the utilized flue gas is subjected to the 19 th step of flue gas purification treatment and is discharged after reaching the standard.

(20-29) the solid cooling treatment and the pyrolysis carbon black deep processing process mainly comprise the step of obtaining the steel wire in the step 23 and the pyrolysis carbon black in the step 25 after a solid cooling system in the step 21 and a magnetic separation system in the step 22 in the third pyrolysis carbon black deep processing.

Conveying the cracked carbon black subjected to the 6 th step of activation and hole expansion to a 21 st step of solid cooling system through a 20 th step slag extractor with a material seal;

the cracked carbon black and the steel wires cooled by the solid cooling system in the step 21 enter a magnetic separation system in the step 22;

magnetically selecting the steel wires obtained in the step 23 by the magnetic separation system in the step 22, and enabling the steel wires obtained in the step 24 to enter a steel wire briquetting for forming so as to be easy to store and transport;

inputting the 25 th cracked carbon black subjected to the magnetic separation system in the 22 th step into a grinding modification system in the 26 th step;

the 26 th step, a grinding and modifying integrated device is adopted in the grinding and modifying system; inputting the cracked carbon black subjected to grinding modification into a granulation drying system in the step 27;

the granulation drying system in the 27 th step is an intelligent and continuous granulation drying device;

the standard of the reinforcing carbon black in the step 28 can be achieved through the granulation drying system in the step 27;

step 28, the reinforcing carbon black can be used for step 29 to manufacture a new tire.

And (3) treating the steel wire in the step 23 to obtain a steel wire pressing block in the step 24, and treating the steel wire pressing block to facilitate storage, transportation and deep processing. And (3) the cracked carbon black in the 25 th step is subjected to a grinding and modification integrated process through a grinding and modification system in the 26 th step, so that the activity of the cracked carbon black is further increased, the quality of the cracked carbon black can be further improved, the cracked carbon black passes through a granulation and drying system in the 27 th step and reaches the standard of the reinforced carbon black in the 28 th step, the cracked carbon black is circularly applied to the new tire manufactured in the 29 th step, and the closed circulation from the waste tire in the 1 st step to the new tire manufactured in the 29 th step is realized.

According to the scheme, through the processes of a first cracking carbonization process (step 5), a second activation reaming process (step 6), a third cracking carbon black deep processing grinding modification system (step 26), grinding activation modification and the like, carbon-containing residues attached to the surface of the cracking carbon black are reduced, the void volume of the carbon black is increased, the adsorption capacity of the carbon black is greatly improved, the carbon black is modified and upgraded again through the 26 th grinding modification system, the activity of the carbon black is further increased, the carbon black can be used as reinforcing carbon black in the 28 th step, the technical indexes can reach the standards of N660 and N330, the carbon black is reused for manufacturing new tires in the 29 th step, and the cyclic utilization of waste tires in the real sense is realized.

In summary, recycling of waste tires at home and abroad is a major issue in the world. Thermal cracking is the final link of the recycling of waste tires, and is a technology for thoroughly cracking the waste tires into various available resources by 'drying and squeezing out'. But the domestic waste tire thermal cracking is still in the primary stage, and the traditional cracking process and equipment are mostly oil treatment, so the utilization rate of cracking products is low; although a few waste tires are cracked and recycled and are provided with carbon black deep processing devices, as only the cracked carbon black is simply treated, the structure of the carbon black is not fundamentally changed, and the carbon black can only be used in low-grade rubber products; the invention provides a method for processing waste tire cracking carbon black for tire manufacturing by changing a carbon black structure, which is characterized in that innovation is carried out on the process technology, a cracking carbonization technology and a high-temperature steam activation reaming technology are combined in the cracking process, and a grinding and modification integrated technology is adopted in the carbon black deep processing for secondary modification and quality improvement, so that the structure of the waste tire cracking carbon black is obviously changed, the quality of a cracking product is obviously improved, the carbon black can be used as reinforcing carbon black for manufacturing a new tire, and the recycling of the waste tire in the true sense is realized.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.