TW201544204A - Commercial recycling integrated processing system for waste tires - Google Patents

Abstract

A commercial recycling integrated processing system for waste tires includes a cracking furnace, an oil gas recycling processing system, a carbon black recycling processing system and an energy recycling usage system. The gaseous-state oil gas and the solid-state carbon black generated by thermally cracking the waste tires in the cracking furnace are respectively processed by the oil gas recycling processing system and the carbon black recycling processing system to produce high quality oil products and carbon blacks as resources. Furthermore, the uncondensed gas in the cooling process of the oil gas can be burned in a combustion furnace to produce high-temperature heat, which are used as the primary heat source for the thermal cracking reaction. The high-temperature residual heat in the thermal cracking reaction can be used as dry heat sources for directly heating the carbon black and for heating the furnace. The thermal energy is fully recycled to integrate the oil gas recycling processing system, the carbon black recycling processing system and the energy recycling usage system; as a result, the benefits of recycling and reusing waste tires can be optimized to meet the requirements of commercial operations.

Description

Waste tire commercial recycling integrated processing system

The invention relates to a commercial tire recycling integrated treatment system for waste tires, in particular to a pyrolysis oil, carbon black and heat energy which can be effectively integrated to treat waste tires after cracking, thereby improving the quality and added value of oil products and carbon blacks. And it can fully recycle the waste tires for commercial recycling and integrated treatment system.

According to the number of waste tires that have been replaced every year in China in recent years, the number of used tires exceeds 100,000 tons. However, since the waste tire cannot be naturally decomposed and rotted, and a large amount of toxic gas such as smoke is generated after combustion, it is not suitable for recycling by conventional burial and incineration.

It is checked that the current recycling methods for waste tires are roughly divided into physical treatment and chemical treatment. The so-called "physical treatment" is to separate the reinforcing materials such as steel wire, nylon and cotton yarn from the waste tires, and then pulverize the rubber and recycle it to make recycled products such as floor mats, foot mats and grass bricks. "Chemical treatment" is to directly pulverize the waste tires and then carry out cracking treatment to convert renewable energy such as fuel oil, carbon black and combustible gas, so that it can be processed to produce energy products with high economic benefits. . In contrast, chemical treatment is significantly more economical than physical treatment, but relatively technically higher and slower to develop.

However, the use of cracking technology to treat waste tires, although it has been a year, and has seen a number of previous cases filed a patent application to the Bureau, such as: No. 082102064 "Waste tire rubber cracking method", No. 085111207 "Use waste Tire production steam "Methods of Oil, Diesel, and Carbon Black", No. 087106755 "Continuous Waste Heat Exchange and Pyrolysis Integration System", No. 095101443 "Treatment Method for Recycling Organic Waste by Catalytic Reaction", No. 094125043 "Waste Treatment" "System", No. 095149609 "Preparation method for high-purity waste tire recycling carbon black", No. 096113899 "Disposal and recovery equipment and method for waste petrochemical products" are all the cases. However, due to these predecessors and conventional technologies, only waste materials such as waste tires and waste rubber are thermally cracked and converted into renewable energy such as fuel oil, carbon black, and combustible gas. The subsequent related processes lack effective integration, so the quality and added value are not high, and the thermal cracking treatment is quite energy-intensive, so the economic benefits are very low, resulting in the delay of commercialization. The stage of talking on paper obviously does not have industrial value.

The invention provides a method for firstly subjecting a waste tire to a thermal cracking treatment, and integrating the produced pyrolysis oil, carbon black and heat energy, thereby improving the quality and added value of the oil product and the carbon black, and The thermal energy generated in the process can be fully recycled to create the maximum benefit of the waste tire recycling process, and the commercial tire recycling integrated processing system can meet the commercial operation requirements.

The invention comprises a cracking furnace, an oil and gas recovery processing system, a carbon black recycling processing system and an energy recycling system. Wherein, the cracking furnace uses a hot gas fed by a combustion furnace as a main heat source to thermally decompose the crushed waste tire pieces put into the furnace to crack out gaseous oil and gas and solid carbon black; and the oil and gas recovery treatment The system is composed of: a condenser, a settling tank, a filter, a filter press and an evaporation system, which can be used for the oil and gas generated after cracking (about 60%), first through the condenser Condensate to separate the oil and uncondensed gas. The oil can be sent to the settling tank for sedimentation and stratification, and the oil overflowed by the upper layer is filtered through the filter to remove impurities, while the bottom sludge and water are The sludge filter and impurities produced by the filter press can be sent back to the cracking furnace for recycling, and the uncondensed gas can be 100% recycled and sent to the combustion furnace for combustion to provide a heat source for the cracking reaction of the cracking furnace. Zero discharge is achieved, and the filtered oil can be sent to the evaporation system to further distinguish the regenerated oils such as light oil and heavy oil to improve the quality of the oil for different purposes; the carbon black recycling treatment The system is composed of: a magnetic separator, a mill, a granulator, a dryer and a packaging unit, which can be used to remove the carbon black generated by the cracking, and then remove the steel wire contained therein by a magnetic separator. Iron impurities and other impurities, after magnetic separation, the carbon black can be sent to the mill to be ground, and then ground into fine particles and sieved at the same time; and the carbon black particles combined with the fineness specification can be sent out with the air flow. The coarse one is dropped into the grinding chamber and re-grinded to form a continuous grinding screening operation, and the carbon black particles sent out can be sent to a granulator for water granulation, and the granulated carbon black particles, Can be directly dropped into the dryer by gravity The dryer is directly heated by a hot-drying drum dryer, and is connected to the fire box of the cracking furnace, so that the high-temperature exhaust gas (about 400-600 ° C) generated after the cracking reaction is introduced into the dryer. As a heat source for drying, the carbon black particles are directly dried by heating to remove moisture, improve heat conversion efficiency, and avoid excessive oxidation or cracking of the carbon black particles; then, the qualified carbon black particles are sent to a packaging machine for packaging. It can have the quality characteristics of commercial carbon black, and the unqualified carbon black can be returned to the front stage for reprocessing. Secondly, the energy recycling system mainly has a boiler, which can burn fuel oil or regenerating oil. The product can be introduced into the tail gas generated after the cracking reaction of the cracking furnace, and the hot air (at least 1/2 or more) provided by the dryer as a dry heat source can provide boiler combustion, thereby improving the boiler thermal efficiency and effectively utilizing the heat source. The steam produced by combustion can be sold to neighboring factories or reused, and the heat energy generated in the process can be fully recycled, and the oil, carbon black and heat generated by thermal cracking of the waste tires can be obtained. Effective integration process, to conform to the needs of commercial operation.

1‧‧‧ cracking furnace

11‧‧‧ burning furnace

2‧‧‧ Oil and gas recovery processing system

21‧‧‧Condenser

22‧‧‧ Settling tank

23‧‧‧Filter

24‧‧‧ filter press

25‧‧‧Evaporation system

3‧‧‧Carbon black recycling system

31‧‧‧ magnetic separator

32‧‧‧grinding machine

33‧‧‧granulator

34‧‧‧Dryer

35‧‧‧Packing machine

4‧‧‧Energy recycling system

41‧‧‧Boiler

The first figure is a schematic representation of the overall processing system of the present invention.

The present invention is an overall processing system for achieving the above object, and the following embodiments are illustrated as follows: Referring to the first drawing, the present invention comprises: a cracking furnace (1), an oil and gas recovery processing system (2) ), a carbon black recycling treatment system (3) and an energy recycling system (4). Wherein, the cracking furnace (1) uses a hot gas provided by a combustion furnace (11) as a main heat source, and the combustion furnace (11) is heated by gas combustion, and the hot gas temperature sent to the cracking furnace (1) needs to be at least Between 600~900 °C, and designed by flow control, the cracking furnace (1) is heated by indirect heating method, and the waste tire pieces which have been crushed into the furnace can be subjected to thermal cracking treatment to crack out gaseous oil and gas and solid state. Carbon black can be sent to the oil and gas recovery treatment system (2) and the carbon black recovery treatment system (3) for subsequent integration.

The oil and gas recovery treatment system (2) is composed of a condenser (21), a settling tank (22), a filter (23), a filter press (24) and an evaporation system (25). And the condenser (21) is a coiled-tube condenser, which can be used for the oil and gas generated after the cracking (about 60%), and is first condensed to 60-70 ° C to separate the oil and the uncondensed gas. The condensed oil can be sent to the settling tank (22) for sedimentation stratification, and the upper overflow oil can be sent to the filter (23) for filtration. The filter (23) is a diatomaceous earth filter for use. The impurities in the oil are filtered; the bottom sludge and water portion can be discharged to a filter press (24), which is a plate and frame filter press for separating solid impurities in the sludge. And solidified into a mud block, together with the impurities filtered out in the oil, can be returned to the cracking furnace (1) treatment; and the uncondensed gas can be 100% recycled into the combustion furnace (11) for combustion, on the cracking furnace ( 1) heating to provide thermal cracking reaction The required heat source achieves zero emissions; the filtered oil is sent to the evaporation system (25) to further distinguish the light oil from the heavy oil to enhance the quality of the oil for different purposes.

The carbon black recycling treatment system (3) is composed of: a magnetic separator (31), a milling machine (32), a granulator (33), a dryer (34) and a packaging machine (35). The magnetic separator (31) is a machine with a surface magnetic flux of more than 3000 Gauss, which can be used to separate carbon black (about 30%) generated by cracking, and magnetically separate metal impurities such as steel wires and iron filings. It is collected and sold for sale, and the magnetically selected carbon black can be sent to the mill (32), which is an ultra-fine mill with grading and grinding functions. The larger particles of carbon black are ground into fine particles and sieved through a classification network to form carbon black particles of fineness specifications, which can be sent out with the air flow; and those which are too thick are re-grinded in the grinding chamber to form Continuous grinding screening operation; the carbon black particles sent after the grinding and sieving are collected, and then sent to a granulator (33) by a screw conveyor, the granulator (33) is a cylinder The granulator can add water black granules to the granules, and the granulated carbon black particles can be directly dropped into the dryer (34) by gravity, and the granulation is dried. (34) is a direct heating drum dryer using hot gas, and is connected with the fire box of the cracking furnace (1) to make the high-temperature exhaust gas (about 400 ~ 600 ° C) generated after the cracking reaction, can be introduced into the dryer (34), as a heat source for drying, directly heat-drying the granulated carbon black particles to remove moisture, improve heat conversion efficiency, and avoid excessive oxidation or cracking of the carbon black particles; then pass the qualified carbon black particles It is sent to the packaging machine (35) for packaging, so that the finished product can have the quality characteristics of commercial carbon black. If the unqualified carbon black is used, it can be returned to the previous stage process for reprocessing. In addition, the carbon black dust generated in each process can be collected by a dust collector, discharged after being dedusted by the washing tower, or returned to the front section for further treatment.

The energy recycling system (4) is mainly equipped with a boiler (41), the boiler (41) is also connected to the fire box of the cracking furnace (1) to remove the combustible fuel oil or regenerated oil, and the high-temperature tail gas generated after the cracking reaction is introduced into the furnace to be heated by the carbon black particles. The hot air outside the dry heat source (at least 1/2 or more) provides boiler (41) combustion, and can improve the thermal efficiency of the boiler (41) by more than 10%, so as to effectively utilize the heat source, and the steam generated after combustion can be sold to the neighbors. The plant, or part of it is used as a heat source for heating, heat preservation and scouring of the equipment, in order to create the maximum benefit of recycling waste tires.

The invention can be resourced by the oil and gas recovery processing system (2) and the carbon recovery processing system (3) by the pyrolysis treatment of the waste tire after the thermal cracking treatment, respectively, to generate high Quality oil and carbon black can effectively increase the added value of the product. Furthermore, the present invention can further utilize the uncondensed gas in the oil condensation process, and send it to the high temperature hot gas generated after the combustion of the combustion furnace (11), and heat the cracking furnace (1) to provide the heat cracking reaction. The main heat source; together with the high-temperature exhaust gas generated by the thermal cracking reaction, the dryer (34) of the carbon black recovery treatment system (3) and the boiler (41) of the energy recycling system (4) can be introduced as direct heating carbon The black dry heat source and the boiler (41) are burned to improve the heat conversion efficiency, and the heat efficiency of the boiler (41) can be improved, and the heat energy can be fully recycled, and the oil recovery processing system (2) and the carbon black recycling treatment can be integrated. The system (3) and the energy recycling system (4), in turn, create the greatest benefit of the recycling of waste tires, in order to meet the needs of commercial operation, and give full play to the value of industrial use.

The overall processing system and structural design of the present invention are only for embodiments that are specifically feasible for achieving the utility of the invention. And the like, the simple modifications and variations of the simple components and processes, and the same claims of the invention are all within the scope of protection of the present invention.

In summary, the present invention has obvious industrial use value, and the overall system design for achieving the purpose of the invention is not based on the prior art. It can be easily completed, and it has not been seen in the publication or publicly implemented. It should have met the application requirements of the invention patent, and the patent right is still required.

1‧‧‧ cracking furnace

11‧‧‧ burning furnace

2‧‧‧ Oil and gas recovery processing system

21‧‧‧Condenser

22‧‧‧ Settling tank

23‧‧‧Filter

24‧‧‧ filter press

25‧‧‧Evaporation system

3‧‧‧Carbon black recycling system

31‧‧‧ magnetic separator

32‧‧‧grinding machine

33‧‧‧granulator

34‧‧‧Dryer

35‧‧‧Packing machine

4‧‧‧Energy recycling system

41‧‧‧Boiler

Claims (8)

The utility model relates to a commercial tire recycling integrated treatment system for waste tires, comprising: a cracking furnace, which uses a hot gas sent from a combustion furnace as a main heat source to thermally crack the broken waste tires, and cracks the gaseous oil and solid carbon into solid carbon. Black; an oil and gas recovery treatment system comprising a condenser, a settling tank, a filter, a filter press and an evaporation system for separating oil and gas from the oil and uncondensed gas through the condenser, the oil The product can be settled by sedimentation tank, and the oil overflowed by the upper layer can be filtered through the filter, while the bottom sludge and water part are treated by a filter press, and the uncondensed gas can be recovered and sent to the combustion furnace for combustion to provide cracking. The furnace is subjected to a heat source for thermal cracking reaction, and the filtered oil product can be sent to an evaporation system to distinguish between light oil and heavy oil; a carbon black recycling treatment system is composed of a magnetic separator and a mill. A granulator and a packaging machine are used for removing carbon black and the like from the carbon black by a magnetic separator, and grinding and grading by a grinder to grind it into fine particles to make it Have to add water through the granulator The granules are directly dropped into the dryer, and the dryer is connected to the fire box of the cracking furnace, so that the high-temperature exhaust gas generated after the thermal cracking reaction can be introduced therein, and the carbon black particles are heated and dried as a drying heat source, and Packed into a commercial carbon black finished product by a packaging machine; and an energy recycling system, which is equipped with a boiler, which is also connected to the fire box of the cracking furnace, and can be introduced into the high temperature exhaust gas generated after the thermal cracking reaction. The carbon black particles are used to heat and dry the excess heat gas for boiler combustion to improve the boiler thermal efficiency and effectively utilize the heat source. For example, the waste tire commercial recycling integrated treatment system described in claim 1 wherein the hot gas sent to the cracking furnace is at least between 600 and 900 ° C, and is designed by flow control to indirectly heat. The furnace is heated. Such as the patented scope of the first paragraph of the waste tire commercial recycling integrated processing system The filter of the oil and gas recovery treatment system is a diatomaceous earth filter. For example, the waste tire commercial recycling integrated processing system described in claim 1 wherein the filter press of the oil and gas recovery processing system is a plate and frame filter press for separating solid impurities in the bottom sludge of the settling tank. And solidified into a mud block, and returned to the cracker processor. For example, the waste tire commercial recycling integrated processing system described in claim 1 is characterized in that the magnetic separator of the carbon black recycling processing system is a machine having a surface magnetic line of more than 3000 Gauss. The waste tire commercial recycling integrated treatment system according to claim 1, wherein the carbon black recycling treatment system dryer is a hot gas direct heating drum dryer for directly drying the carbon black particles to avoid Carbon black particles are excessively oxidized or broken. For example, in the carbon black recycling process, the carbon black particles that are unqualified after granulation and drying can be returned to the previous stage process for reprocessing. . For example, the waste tire commercial recycling integrated treatment system described in claim 1 wherein the carbon black dust generated during the carbon black recovery process can be collected by a dust collector and discharged after being dedusted by the washing tower. , or go back to the previous paragraph and reprocess it.