CN-224199325-U - Continuous pyrolysis carbon black quality improving equipment

CN224199325UCN 224199325 UCN224199325 UCN 224199325UCN-224199325-U

Abstract

The utility model provides continuous pyrolysis carbon black quality improving equipment, which belongs to the technical field of pyrolysis carbon black treatment and comprises a drying device and a heating device, wherein the drying device comprises a plurality of spiral conveyors which are connected in series and arranged in parallel, a drying box body is sleeved outside the spiral conveyors and provided with a drying gas inlet and a drying gas outlet, a guide plate is arranged on the inner side surface of the drying box body, the heating device comprises a heat exchange box body which is sleeved outside a thermal cracking reaction kettle and provided with a heat exchange gas inlet and a heat exchange gas outlet, the heat exchange gas outlet of the heat exchange box body is connected with the drying gas inlet of the drying box body, and a heating component is used for generating high-temperature flue gas, conveying the high-temperature flue gas to the heat exchange box body through the heat exchange gas inlet and receiving and heating the flue gas output by the drying gas outlet. The utility model solves the technical problem that the prior cracking carbon black has low toluene light transmittance due to high oil content, and has the characteristics of obviously improving the toluene light transmittance of the cracking carbon black and ensuring the quality of the cracking carbon black.

Inventors

ZHOU PING
ZHANG JINGXIN
MAO WENPENG
Ding Xuwen
CUI JIAN
LIU WEI
LIU XIAO
YANG YUNBIN
TENG JINGJING

Assignees

青岛伊克斯达再生资源有限公司

Dates

Publication Date: 20260505
Application Date: 20250429

Claims (10)

1. The continuous pyrolysis carbon black quality improving equipment is characterized by comprising a drying device and a heating device; the drying device includes: a plurality of screw conveyors connected in series and arranged in parallel; The drying box body is sleeved outside the spiral conveyors and provided with a drying gas inlet and a drying gas outlet, and the inner side surface of the drying box body is provided with a guide plate; the heating apparatus includes: The heat exchange box body is sleeved outside the thermal cracking reaction kettle and provided with a heat exchange gas inlet and a heat exchange gas outlet, and the heat exchange gas outlet of the heat exchange box body is connected with the drying gas inlet of the drying box body; and the heating assembly is used for generating high-temperature flue gas, conveying the high-temperature flue gas to the heat exchange box body through the heat exchange gas inlet, and receiving and heating the flue gas output by the drying gas outlet.
2. The continuous-pyrolysis carbon black quality-improving apparatus according to claim 1, wherein the heating assembly comprises a circulating fan, a hot blast stove, a flue gas duct connecting the heating assembly with the heat exchange box, and connecting the heating assembly with the drying box.
3. The continuous-pyrolysis carbon black quality improving device according to claim 1, wherein the screw conveyor comprises a screw cylinder body, a screw shaft sleeved in the screw cylinder body, a screw blade sleeved outside the screw shaft, and a transmission piece for driving the screw shaft and the screw blade to rotate and positioned at one end outside the screw cylinder body, and the drying box body is sleeved outside the screw cylinder body.
4. The continuous-pyrolysis carbon black quality improvement apparatus of claim 3 wherein the plurality of screw conveyors comprises a first screw conveyor and a second screw conveyor connected in series and disposed in parallel.
5. The apparatus of claim 4, wherein the screw cylinder has a feed inlet, a discharge outlet, and an oil gas outlet, the feed inlet of the first screw conveyor is connected to the back-box material outlet of the thermal cracking reactor, and the discharge outlet of the first screw conveyor is connected to the feed inlet of the second screw conveyor.
6. The apparatus of claim 5, wherein the oil gas outlet of the screw conveyor is connected to the rear compartment of the thermal cracking reactor.
7. The continuous-process carbon black quality improvement apparatus according to claim 5, further comprising a water cooling device connected to the discharge port of the second screw conveyor.
8. The continuous-pyrolysis carbon black quality improvement device according to claim 7 wherein the water cooling means comprises a primary water cooling screw and a secondary water cooling screw in series with the primary water cooling screw.
9. The continuous-process carbon black quality improvement apparatus according to claim 8, further comprising a twin-roll crusher connected to the secondary water-cooled screw, and a magnetic separator connected to the twin-roll crusher.
10. The continuous-process carbon black quality improvement apparatus of claim 9, further comprising a screen coupled to the magnetic separator.

Description

Continuous pyrolysis carbon black quality improving equipment Technical Field The utility model belongs to the technical field of treatment of cracked carbon black, and particularly relates to continuous cracked carbon black quality improving equipment. Background China is the largest rubber manufacturing and processing base in the world, is also the large country where raw rubber is consumed in the world, and the production amount of waste rubber reaches the first place in the world. With the rapid development of the automobile industry in China, more and more waste tires are used. The waste tyre belongs to waste rubber, is waste which occupies a large amount of environmental space and is difficult to compress and collect. In order to meet the requirements of continuously improving the material performance, rubber is developed towards high strength, wear resistance, stability and ageing resistance, but the problem that the waste rubber cannot be naturally degraded for a long time is caused, and a large amount of waste rubber causes black pollution which is more difficult to treat than plastic pollution (white pollution), and precious rubber resources are wasted. How to make these wastes available in the least pollution or in the cleaner, more environment-friendly and more modern industrial state, and to become waste into valuable resources is a very interesting hot spot. Scrap tire cracking is considered to be one of the effective ways to treat scrap tires today. The waste tyre cracking technology is a process of decomposing high molecular polymer in tyre into low molecular compound in high temperature environment without oxygen or oxygen deficiency. Rubber, steel wires and other organic substances in the waste tires are decomposed through a high-temperature cracking process, so that valuable products such as fuel oil, carbon black, steel wires and non-condensable combustible gases are produced. The cracking technology has the advantages of great treatment capacity, no secondary pollution, capacity of recovering and utilizing resource, etc. It effectively solves the problem of processing junked tires and avoids the pollution of the junked tires to the environment. And secondly, the fuel oil generated by cracking the waste tires and refining the oil has higher heat value, can be used as an alternative energy source and provides power for the industrial and traffic fields. In addition, the high-quality carbon black can be produced in the cracking process, can be used for manufacturing rubber products, pigments, plastics, electrode materials, composite materials, printing ink, asphalt modifier, color master batch and the like, and has higher application value. The yield of the cracked carbon black is higher and even exceeds that of the cracked oil, so that the improvement of the quality and the performance of the carbon black is an important link in the whole cracking process. The quality and oil content of the cracked carbon black are important indicators for assessing its handling and utility value. The cracking carbon residue with high oil content is difficult to carry out carbon black deep processing technologies such as grinding, granulating and the like, so that the treatment difficulty and the cost are increased, the recycling utilization of the carbon black is also influenced, and the economic value of the carbon black is reduced. The pyrolysis reaction of the pyrolysis process is related to the rate, temperature, time of heating and composition of the feedstock and is also an important factor affecting the pyrolysis of carbon black. The more the internal void volume of the carbon black, the higher the structure of the carbon black, and improving the pore structure has an important influence on the adsorption performance and the reactivity of the carbon black. The structure of carbon black is affected by a number of factors, of which temperature is a critical factor. The high temperature can promote the gasification and cracking of the raw oil to generate carbon black with smaller particle size and uniform distribution. At the same time, the control of the reaction temperature and residence time also has an important effect on the particle size and structure of the carbon black. The cracking process in the current market is to continuously crack and slag, the carbon slag is subjected to gas-blocking section spiral, two-stage water-cooling spiral, and the carbon slag is directly conveyed to a cracking carbon slag temporary storage bin through a magnetic separator, a screening machine and pneumatic force, and the carbon black is prepared into the finished carbon black after deep processing. Because the reaction temperature and the residence time of thermal cracking are insufficient, the oil content in the carbon black slag cannot be completely decomposed or extracted in the deep processing process of the carbon black, so that the carbon black has high oil content, the light transmittance of toluene is 2