CN112143511A

CN112143511A - Conveying mechanism for cracking carbon black

Info

Publication number: CN112143511A
Application number: CN202010921256.1A
Authority: CN
Inventors: 朱锡鑫; 郑泽祥
Original assignee: Fujian Aolinmei Environmental Protection Technology Co ltd
Current assignee: Guangzhou Xinde Environmental Protection Technology Co.,Ltd.
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2020-12-29

Abstract

The invention provides a conveying mechanism for cracking carbon black, which is provided with a combustion mechanism and a solid-gas separation chamber, wherein a carbon black discharging screw machine is connected below the solid-gas separation chamber, and the solid-gas separation chamber is also connected with an oil-gas pipeline. The discharge end of the carbon black discharge screw machine is provided with an upward overflow outlet, the overflow outlet is positioned in an overflow channel with a sealed top, a conveying main pipe is connected below the overflow channel, and a spraying device is arranged in the overflow channel. The combustion mechanism is internally provided with a spiral propelling mechanism which brings carbon black and oil gas into the solid-gas separation chamber, the conveying main pipe is a spiral propelling mechanism, and the conveying main pipe is provided with a draught fan. According to the invention, the overflow cooling treatment is carried out on the carbon black, and the carbon black is cooled and dedusted by water mist in the process of overflowing and falling, so that the carbon black can be uniformly humidified and rapidly cooled, the flying dust is reduced, air is prevented from entering a carbon black discharging screw machine, the secondary combustion of the carbon black is avoided, and the hidden troubles of spontaneous combustion, powder explosion and the like in the output process are solved at one stroke.

Description

Conveying mechanism for cracking carbon black

Technical Field

The invention relates to the technical field of cracked carbon black treatment equipment, in particular to a conveying mechanism for cracked carbon black.

Background

The rubber enters a cracking furnace, is heated in the propelling process and starts cracking to generate cracking gas and carbon black, the cracking gas is cooled into liquid and non-condensable gas through an oil absorption tower and a tubular heat exchanger, and the carbon black is conveyed to another shaftless spiral conveyor through a discharge spiral conveyor with a shaft and is conveyed to be packaged. Usually, the carbon black of a plurality of cracking production lines is gathered into the same conveying main pipe to be sent to be packaged, the temperature of the carbon black falling from the cracking furnace to the carbon black discharging screw machine is about 420 ℃, the temperature of the carbon black falling from the carbon black discharging screw machine to the conveying main pipe through the spraying channel is reduced and humidified, the temperature of the carbon black entering the conveying main pipe is about 100-, in the process of conveying the main conveying pipe, carbon black produced by several cracking furnaces is all converged into the main conveying pipe, the main conveying pipe is provided with several interfaces, in order to prevent the carbon black from floating out in the process of conveying, the system is provided with an induced draft fan, external air enters the system, meanwhile, the carbon black particles are finely dried to cause dust raising, so that the hidden danger of dust explosion exists, air easily enters a carbon black discharging screw machine to enable the carbon black to be secondarily combusted, and the purpose of cooling cannot be achieved; second, natural phenomena may occur during packaging and storage.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a conveying mechanism for cracking carbon black, which carries out cooling treatment in a carbon black overflow mode, avoids the contact of air and high-temperature carbon black, ensures the uniform humidification of the carbon black, reduces dust emission, and solves the hidden troubles of spontaneous combustion and powder explosion.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention relates to a conveying mechanism for cracking carbon black, which is provided with a combustion mechanism and a solid-gas separation chamber, wherein a carbon black discharging screw machine is connected below the solid-gas separation chamber, an upward overflow outlet is arranged at the discharging end of the carbon black discharging screw machine, the overflow outlet is positioned in an overflow channel with a sealed top, a conveying main pipe is connected below the overflow channel, and a spraying device is arranged in the overflow channel.

The outer surface of the carbon black discharging screw is provided with a water cooling jacket, one end of the water cooling jacket is provided with a water replenishing pipe, and the other end of the water cooling jacket is provided with a water outlet pipe.

The combustion mechanism is a cracking furnace, and a spiral propelling mechanism is arranged in the combustion mechanism and carries carbon black and oil gas into a solid-gas separation chamber.

The solid-gas separation chamber is connected with an oil-gas pipeline.

The conveying main pipe is a spiral propelling mechanism and is provided with a draught fan.

The invention has the advantages that: carbon black that many pyrolysis furnaces carried is unified assembles the delivery header in exporting, in carbon black ejection of compact screw machine and delivery header butt joint department, carry out overflow cooling to carbon black and handle, carbon black is overflowing and is dropped the in-process by water smoke cooling and dust removal, can make the even humidification of carbon black and cool off rapidly, reduce the raise dust, avoid the raise dust to produce powder and explode and the spontaneous combustion, and can avoid the air reverse to get into carbon black ejection of compact screw machine and take place to contact with high temperature carbon black, avoid carbon black postcombustion to make the cooling inefficacy, make carbon black ejection of compact screw machine carry out high-efficient cooling to carbon black under the state of being close to the vacuum, and solved hidden danger such as spontaneous combustion and powder explosion in the output process at.

Description of the drawings:

FIG. 1 is a schematic structural diagram of the present invention.

The specific implementation mode is as follows:

the invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, the present invention is a conveying mechanism for cracking carbon black, which has a combustion mechanism 1 and a solid-gas separation chamber 2, in the prior art, the combustion mechanism 1 is a cracking furnace, the solid-gas separation chamber 2 is connected to an oil-gas pipeline 21, a carbon black discharging screw machine 3 is connected below the solid-gas separation chamber 2, a screw propulsion mechanism is provided in the combustion mechanism 1 to bring carbon black and oil gas into the solid-gas separation chamber 2, the oil gas rises in the solid-gas separation chamber 2 and enters the oil-gas pipeline 21, and the carbon black freely falls into the carbon black discharging screw machine 3 and is taken out by the carbon black discharging screw machine 3. Under the general condition, the carbon black of a plurality of pyrolysis furnaces exports and cools down through carbon black ejection of compact screw machine 3, then export in same conveying house steward 6 of same confluence, conveying house steward 6 adopts shaftless screw conveyer, conveying house steward 6 disposes the draught fan, owing to adopt the draught fan to have the outside air to get into, make the carbon black granule micro-drying in the pipeline 6 easily lead to the raise dust, dust explosion's hidden danger has, and the outside air gets into in carbon black ejection of compact screw machine 3 easily, contact high temperature carbon black causes the postcombustion of carbon black easily.

The discharge end of carbon black ejection of compact screw machine 3 has ascending overflow mouth 4, overflow mouth 4 is located the sealed overflow channel 5 in top, overflow channel 5 below and connect conveying house steward 6, carbon black is by the propelling movement of carbon black ejection of compact screw machine 3 to the tip, overflow mouth 4 upwards, then freely fall gets into conveying house steward 6 in overflowing channel 5, overflow mouth 4's height is about 200mm, can effectively prolong carbon black at the path distance and the time of carbon black ejection of compact screw machine 3, make the carbon black fully cool down, and simultaneously, because carbon black adopts the overflow mode blanking, can avoid the air to get into in carbon black ejection of compact screw machine 3, consequently, carbon black is in cooling down under the state of being close to vacuum (weak oxygen) in carbon black ejection of compact screw machine 3, the cooling effect is better, and avoid the secondary combustion.

The outer surface of the carbon black discharging screw machine 3 is provided with a water cooling jacket 30, one end of the water cooling jacket 30 is provided with a water replenishing pipe 31, the other end is provided with a water outlet pipe 32, the water cooling jacket 30 can play a role of cooling the carbon black pushed in the carbon black discharging screw machine 3, preferably, the water replenishing pipe 31 enters the water cooling jacket 30 from a section close to the solid-gas separation chamber 2 and is discharged from the lower part of the water cooling jacket 30 from one end of an outlet of the carbon black discharging screw machine 3. The temperature of the carbon black falling from the combustion mechanism 1 to the carbon black discharging screw machine 3 is about 420 ℃, and the temperature of the carbon black falling when reaching the upper part of the overflow port 4 is about 120 ℃.

Therefore, the overflow channel 5 is provided with the spraying device 51, the spraying device 51 preferably adopts a spraying head, the spraying device can be arranged above the overflow outlet 4, and a plurality of spraying devices are arranged in the overflow channel 5 aiming at the falling positions of the carbon black, the carbon black overflowing from the overflow outlet 4 and falling is cooled and dedusted by water mist, so that the temperature of the carbon black is reduced to about 60 ℃ after entering the conveying pipeline 6, part of spraying water is gasified by the temperature of the carbon black and then moves along with the conveying main pipe 6, and the spraying water is cooled and then mixed with the carbon black in the moving process, so that the carbon black can be uniformly humidified, the temperature is rapidly reduced to about 40 ℃, and the hidden troubles of spontaneous combustion and powder explosion are solved at one step.

It is to be understood that the technical scope of the present invention is not limited to the contents of the specification, and that modifications or changes may be made by those skilled in the art based on the above description, and all such modifications and changes are intended to fall within the scope of the appended claims.

Claims

1. The utility model provides a conveying mechanism of schizolysis carbon black, has combustion mechanism (1) and solid gas separation chamber (2), and carbon black ejection of compact screw machine (3), its characterized in that are connected to solid gas separation chamber (2) below: the discharge end of the carbon black discharge screw machine (3) is provided with an upward overflow outlet (4), the overflow outlet (4) is positioned in an overflow channel (5) with a sealed top, a conveying main pipe (6) is connected below the overflow channel (5), and a spraying device (51) is arranged in the overflow channel (5).

2. The conveying mechanism for cracked carbon black as claimed in claim 1, wherein: the outer surface of the carbon black discharging screw machine (3) is provided with a water cooling jacket (30), one end of the water cooling jacket (8) is provided with a water replenishing pipe (31), and the other end is provided with a water outlet pipe (32).

3. The conveying mechanism for cracked carbon black as claimed in claim 1 or 2, wherein: the combustion mechanism (1) is a cracking furnace, and a spiral propelling mechanism (11) is arranged in the combustion mechanism (1) and used for bringing carbon black and oil gas into the solid-gas separation chamber (2).

4. A conveying mechanism for cracked carbon black according to claim 3, characterized in that: the solid-gas separation chamber (2) is connected with an oil-gas pipeline (21).

5. The conveying mechanism for cracked carbon black as claimed in claim 1 or 2, wherein: the conveying main pipe (6) is a shaftless screw conveyor, and the conveying main pipe (6) is provided with an induced draft fan.