Carbon black waste residue recycling and reprocessing system

Abstract

The invention discloses a carbon black waste residue recycling and reprocessing system, and relates to the field of carbon black waste residue recycling. The carbon black waste residue recycling and reprocessing system comprises three steps of primary processing, water vapor evaporation and carbon black recycling. According to the recycling and reprocessing system for the carbon black waste residues, the crushed carbon black waste residues and the additive are subjected to a heating reaction, so that impurities in the carbon black waste residues can be effectively removed, the purity of carbon black is higher, subsequent dispersion and mixing are facilitated, the application scene and range of the carbon black are wider, meanwhile, the processing benefits of the processing system are improved, and the economic benefits of the processing system are improved. Through water vapor evaporation and treatment of the bag-type dust remover, carbon black with impurities removed can be dried, waste gas of the carbon black can be treated, pollution to the atmospheric environment is avoided while the recovery rate of carbon black powder is increased, sustainable development is achieved, environmental protection is facilitated, then the carbon black is further recovered and collected, air is subjected to water treatment, and the environment-friendly effect is achieved. The steps are simple, the cost is relatively low, and carbon emission and environmental pollution can be reduced.

Description

Technical Field

[0001] The invention relates to the field of carbon black waste residue recovery, and in particular to a carbon black waste residue recovery and reprocessing system. Background Art

[0002] Carbon black is a kind of amorphous carbon, light, loose and extremely fine black powder. It is the product of incomplete combustion or thermal decomposition of carbon-containing substances such as coal, natural gas, heavy oil, fuel oil, etc. under insufficient air conditions. Carbon black has excellent rubber reinforcement, coloring, conductivity or antistatic and ultraviolet absorption functions, and is widely used in rubber, ink, paint, plastic and other industries. It is also one of the important raw materials in the tire industry, and carbon black can also be used as a black dye. However, the purity and processing efficiency of some existing carbon black waste residue recovery systems are low when processing carbon black. Therefore, a carbon black waste residue recovery and reprocessing system is proposed. Summary of the invention

[0003] The purpose of the present invention is to provide a carbon black waste residue recovery and reprocessing system to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a carbon black waste residue recovery and reprocessing system, comprising the following steps:

[0005] Step 1, preliminary processing: select the carbon black filter cake and transport it to the storage tank of the raw material storage warehouse in the factory by a closed car, then put the carbon black waste residue in the storage tank into the vertical raw material crusher through the grab bucket, and then control the vertical raw material crusher to crush the carbon black filter cake. When the carbon black in the vertical raw material crusher is crushed, carbon black powder can be obtained, and then it is discharged to the belt conveyor, and then the belt conveyor is controlled to transport the carbon black powder to the heating mixer, and then the carbon black powder is heated and the additive is added thereto, and then it is stirred in the heated state, and the stirring time is controlled to be 50-70 minutes. When the carbon black powder fully reacts with the additive, the impurities in it are completely degraded, and then it is discharged and collected;

[0006] Step 2: Water vapor evaporation: Add the carbon black powder collected in step 1 into the flash dryer, mix it with the air provided by the main blower through the fuel natural gas in the natural gas combustion furnace, and burn it to produce a high-temperature combustion airflow of 150℃-200℃, which passes through the mixer, degradation section, oxidation section and reaction section in sequence. When the carbon black powder is evaporated, the exhaust gas and carbon black are controlled below 100℃ and enter the bag filter. The bag filter makes the dust concentration in the exhaust gas lower than 10mg / m 3 , reducing the carbon black dust concentration in the exhaust gas. The gas that meets the emission standards is sent to the vent chimney by the exhaust fan. After the dust concentration in the exhaust gas is further reduced by the water spray system, it is directly discharged into the atmosphere;

[0007] Step 3: Carbon black recovery: After passing through the bag filter, the carbon black enters the carbon black air delivery system, and is then transported to the recovery bag filter by the air delivery system after passing through the micron crusher. The filtered air is discharged into the atmosphere after being treated with water in the vent chimney.

[0008] Preferably, when the carbon black filter cake in step 1 is selected, its water mass fraction is required to be (60+5)%.

[0009] Preferably, the belt conveyor in step 1 is installed directly below the discharge port of the vertical raw material crusher.

[0010] Preferably, the rotation speed of the vertical raw material crusher in step 1 is 500-600 r / min, and the crushing time is 10-20 min.

[0011] Preferably, before the additive in step 1 is put into the heating agitator, the temperature of the carbon black needs to be heated to 65-100 degrees Celsius.

[0012] Preferably, when the carbon black powder in step 1 is stirred under heating, the stirring time is controlled to be 50-70 minutes.

[0013] Preferably, after the carbon black evaporation reaction in step 2, the water mass fraction of the carbon black is required to be below 2.5%.

[0014] Preferably, the bag filter in step 2 is a model with a collection efficiency of more than 99.99%.

[0015] Preferably, before using the equipment in step 1, step 2 and step 3, check whether the grounding wire of the equipment is firm, and check whether the insulation protection of the power supply is safe and reliable. If the equipment is shut down or powered off during operation, the power supply should be cut off to prevent sudden startup and accidents.

[0016] Beneficial Effects

[0017] Compared with the prior art, the present invention provides a carbon black waste residue recovery and reprocessing system, which has the following beneficial effects:

[0018] The carbon black waste residue recovery and reprocessing system can effectively remove impurities in the crushed carbon black waste residue by heating it with additives, thereby making the carbon black more pure, facilitating subsequent dispersion and mixing, making the carbon black more widely applicable, and improving the processing efficiency of the processing system. Through water vapor evaporation and bag dust collector treatment, the carbon black with impurities removed can be dried and its exhaust gas can be treated, thereby improving the recovery rate of carbon black powder while avoiding pollution to the atmospheric environment, achieving sustainable development, and being beneficial to environmental protection. The carbon black is then further recovered and collected and the air is subjected to water treatment. The above steps are simple and relatively low in cost, and can reduce carbon emissions and reduce pollution to the environment. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Embodiment 1: A carbon black waste residue recovery and reprocessing system, comprising the following steps:

[0021] Step 1, preliminary processing: select the carbon black filter cake and transport it to the storage tank of the raw material storage warehouse in the factory through a closed car, and then put the carbon black waste residue in the storage tank into the vertical raw material crusher through the grab bucket, and then control the vertical raw material crusher to crush the carbon black filter cake. When the carbon black in the vertical raw material crusher is crushed, carbon black powder can be obtained, and then it is discharged to the belt conveyor, and then the belt conveyor is controlled to transport the carbon black powder to the heating mixer, and then the carbon black powder is heated and the additive is added thereto, and then it is stirred in the heated state, and the stirring time is controlled to be 50 minutes. , when the carbon black powder reacts fully with the additive, the impurities in it are completely degraded, and then it is discharged and collected. When the carbon black filter cake in step one is selected, its water mass fraction is required to be (60+5)%. When the belt conveyor in step one is installed, it should be installed directly below the discharge port of the vertical raw material crusher. The speed of the vertical raw material crusher in step one is 500r / min, and the crushing time is 10min. Before the additive in step one is put into the heating stirrer, the temperature of the carbon black needs to be heated to 65 degrees Celsius. When the carbon black powder in step one is stirred in a heated state, the stirring time is controlled to 50min;

[0022] Step 2: Evaporation of water vapor: Add the carbon black powder collected in step 1 into the flash dryer, mix it with the air provided by the main blower through the fuel natural gas in the natural gas combustion furnace, and burn it to produce a high-temperature combustion airflow of 150°C, which passes through the mixer, degradation section, oxidation section and reaction section in sequence. When the carbon black powder is evaporated, the exhaust gas and carbon black are controlled below 100°C and enter the bag filter. The bag filter makes the dust concentration in the exhaust gas lower than 10mg / m 3 , reduce the carbon black dust concentration in the exhaust gas, and the gas that meets the emission standards is sent to the vent chimney by the exhaust fan. After the dust concentration in the exhaust gas is further reduced by the water spray system, it is directly discharged into the atmosphere. After the carbon black evaporation reaction in step 2, the water mass fraction of the carbon black is required to be less than 2.5%. The bag dust collector in step 2 is selected to have a collection efficiency of more than 99.99%;

[0023] Step 3, carbon black recovery: After passing through the bag filter, the carbon black enters the carbon black air delivery system, and is transported to the recovery bag filter by the air delivery system after passing through the micron crusher. The filtered air is discharged into the atmosphere after being treated with water in the vent chimney. Before using the equipment in steps 1, 2 and 3, check whether the grounding wire of the equipment is firm, and check whether the insulation protection of the power supply is safe and reliable. If the equipment is shut down or the power is off during operation, the power supply should be cut off to prevent sudden startup and accidents.

[0024] Embodiment 2: A carbon black waste residue recovery and reprocessing system, comprising the following steps:

[0025] Step 1, preliminary processing: select the carbon black filter cake and transport it to the storage tank of the raw material storage warehouse in the factory through a closed car, and then put the carbon black waste residue in the storage tank into the vertical raw material crusher through the grab bucket, and then control the vertical raw material crusher to crush the carbon black filter cake. When the carbon black in the vertical raw material crusher is crushed, carbon black powder can be obtained, and then it is discharged to the belt conveyor, and then the belt conveyor is controlled to transport the carbon black powder to the heating mixer, and then the carbon black powder is heated and the additives are added thereto, and then it is stirred in the heated state, and the stirring time is controlled to be 50-70 minutes. , when the carbon black powder reacts fully with the additive, the impurities in it are completely degraded, and then it is discharged and collected. When the carbon black filter cake in step one is selected, its water mass fraction is required to be (60+5)%. When the belt conveyor in step one is installed, it should be installed directly below the discharge port of the vertical raw material crusher. The speed of the vertical raw material crusher in step one is 550r / min, and the crushing time is 15min. Before the additive in step one is put into the heating stirrer, the temperature of the carbon black needs to be heated to 82.5 degrees Celsius. When the carbon black powder in step one is stirred in a heated state, the stirring time is controlled to 60min;

[0026] Step 2: Evaporation of water vapor: Add the carbon black powder collected in step 1 into the flash dryer, mix it with the air provided by the main blower through the fuel natural gas in the natural gas combustion furnace, and burn it to produce a high-temperature combustion airflow of 175°C, which passes through the mixer, degradation section, oxidation section and reaction section in sequence. When the carbon black powder is evaporated, the exhaust gas and carbon black are controlled below 100°C and enter the bag filter. The bag filter makes the dust concentration in the exhaust gas lower than 10mg / m 3 , reduce the carbon black dust concentration in the exhaust gas, and the gas that meets the emission standards is sent to the vent chimney by the exhaust fan. After the dust concentration in the exhaust gas is further reduced by the water spray system, it is directly discharged into the atmosphere. After the carbon black evaporation reaction in step 2, the water mass fraction of the carbon black is required to be less than 2.5%. The bag dust collector in step 2 is selected to have a collection efficiency of more than 99.99%;

[0027] Step 3, carbon black recovery: After passing through the bag filter, the carbon black enters the carbon black air delivery system, and is transported to the recovery bag filter by the air delivery system after passing through the micron crusher. The filtered air is discharged into the atmosphere after being treated with water in the vent chimney. Before using the equipment in steps 1, 2 and 3, check whether the grounding wire of the equipment is firm, and check whether the insulation protection of the power supply is safe and reliable. If the equipment is shut down or the power is off during operation, the power supply should be cut off to prevent sudden startup and accidents.

[0028] Embodiment 3: A carbon black waste residue recovery and reprocessing system, comprising the following steps:

[0029] Step 1, preliminary processing: select the carbon black filter cake and transport it to the storage tank of the raw material storage warehouse in the factory through a closed car, and then put the carbon black waste residue in the storage tank into the vertical raw material crusher through the grab bucket, and then control the vertical raw material crusher to crush the carbon black filter cake. When the carbon black in the vertical raw material crusher is crushed, carbon black powder can be obtained, and then it is discharged to the belt conveyor, and then the belt conveyor is controlled to transport the carbon black powder to the heating mixer, and then the carbon black powder is heated and the additive is added thereto, and then it is stirred in the heated state, and the stirring time is controlled to be 70 minutes. When the carbon black powder reacts fully with the additive, the impurities therein are completely degraded, and then the carbon black powder is discharged and collected. When the carbon black filter cake in step one is selected, its water mass fraction is required to be (60+5)%. When the belt conveyor in step one is installed, it should be installed directly below the discharge port of the vertical raw material crusher. The speed of the vertical raw material crusher in step one is 600r / min, and the crushing time is 20min. Before the additive in step one is put into the heating stirrer, the temperature of the carbon black needs to be heated to 100 degrees Celsius. When the carbon black powder in step one is stirred in a heated state, the stirring time is controlled to 70min;

[0030] Step 2: Evaporation of water vapor: Add the carbon black powder collected in step 1 into the flash dryer, mix it with the air provided by the main blower through the fuel natural gas in the natural gas combustion furnace, burn it to produce a high-temperature combustion airflow of 200°C, and pass through the mixer, degradation section, oxidation section and reaction section in sequence. When the carbon black powder is evaporated, the exhaust gas and carbon black are controlled below 100°C and enter the bag filter. The bag filter makes the dust concentration in the exhaust gas lower than 10mg / m 3 , reduce the carbon black dust concentration in the exhaust gas, and the gas that meets the emission standards is sent to the vent chimney by the exhaust fan. After the dust concentration in the exhaust gas is further reduced by the water spray system, it is directly discharged into the atmosphere. After the carbon black evaporation reaction in step 2, the water mass fraction of the carbon black is required to be less than 2.5%. The bag dust collector in step 2 is selected to have a collection efficiency of more than 99.99%;

[0031] Step 3, carbon black recovery: After passing through the bag filter, the carbon black enters the carbon black air delivery system, and is transported to the recovery bag filter by the air delivery system after passing through the micron crusher. The filtered air is discharged into the atmosphere after being treated with water in the vent chimney. Before using the equipment in steps 1, 2 and 3, check whether the grounding wire of the equipment is firm, and check whether the insulation protection of the power supply is safe and reliable. If the equipment is shut down or the power is off during operation, the power supply should be cut off to prevent sudden startup and accidents.

[0032] It can be seen that the purity and processing efficiency of some existing carbon black waste recovery systems are low when processing carbon black, while the carbon black waste recovery and reprocessing system can effectively remove impurities inside the crushed carbon black waste through heating reaction with additives, so that the purity of the carbon black is higher, which is conducive to subsequent dispersion and mixing, making the applicable scenarios and scope of the carbon black wider, and at the same time improving the processing efficiency of the processing system. Through water vapor evaporation and bag dust collector treatment, the carbon black with impurities removed can be dried and its exhaust gas can be treated, thereby improving the recovery rate of carbon black powder while avoiding pollution to the atmospheric environment, achieving sustainable development, and being beneficial to environmental protection. Then, the carbon black is further recovered and collected and the air is treated with water. The above steps are simple and relatively low in cost, and can reduce carbon emissions and reduce pollution to the environment.

Claims

1. A carbon black waste residue recovery and reprocessing system, characterized in that: The following steps are involved: Step 1: Preliminary processing: Control the vertical raw material crusher to crush the carbon black filter cake to obtain carbon black powder, which is then transported to a heating stirrer through a conveying device, heated and additives are added thereto, and then stirred in a heated state; Step 2: water vapor evaporation: the carbon black powder collected in step 1 is added into a flash dryer, and passes through a mixer, a degradation section, an oxidation section and a reaction section in sequence to reduce the water content in the carbon black powder; Step 3: Carbon black recovery: After passing through the bag filter, the carbon black enters the carbon black air conveying system, and then passes through the micron crusher and is transported to the recovery bag filter by the air conveying system.

2. A carbon black waste residue recovery and reprocessing system according to claim 1, characterized in that: The carbon black filter cake in step one is transported to a storage tank of a raw material storage bin in a factory building by a closed vehicle, and then the carbon black waste residue in the storage tank is placed into a vertical raw material crusher by a grab bucket. When the carbon black filter cake in step one is selected, its water mass fraction is required to be (60+5)%.

3. A carbon black waste residue recovery and reprocessing system according to claim 2, characterized in that: The conveying equipment used in the step 1 is a belt conveyor, which should be installed just below the discharge port of the vertical raw material crusher.

4. A carbon black waste residue recovery and reprocessing system according to claim 3, characterized in that: The rotation speed of the vertical raw material crusher in step 1 is 500-600r / min, and the crushing time is 10-20min.

5. A carbon black waste residue recovery and reprocessing system according to claim 4, characterized in that: Before the additive in step 1 is put into the heating stirrer, the temperature of the carbon black needs to be heated to 65-100 degrees Celsius.

6. A carbon black waste residue recovery and reprocessing system according to claim 5, characterized in that: In the step 1, the heating stirrer is controlled to start, and when the carbon black powder and the additive are stirred under heating, the stirring time is controlled to be 50-70 minutes. After the carbon black powder and the additive are fully reacted and the impurities therein are completely degraded, the carbon black powder is discharged and collected.

7. A carbon black waste residue recovery and reprocessing system according to claim 6, characterized in that: In the second step, the fuel natural gas is mixed with the air provided by the main blower in the natural gas combustion furnace, and the combustion generates a high-temperature combustion airflow of 150°C-200°C. When the carbon black powder is evaporated, the water mass fraction of the carbon black is required to be below 2.5%. The exhaust gas and carbon black are controlled to be below 100°C before entering the bag filter. The bag filter makes the dust concentration in the exhaust gas lower than 10mg / m 3 , reduce the carbon black dust concentration in the exhaust gas, and the gas that meets the emission standards is sent to the vent chimney using an exhaust fan. After passing through the water spray system to further reduce the dust concentration in the exhaust gas, it is directly discharged into the atmosphere. After the carbon black evaporation reaction, the water mass fraction of the carbon black is required to be below 2.5%.

8. A carbon black waste residue recovery and reprocessing system according to claim 7, characterized in that: The bag filter in step 2 is selected to have a collection efficiency of more than 99.99%.

9. A carbon black waste residue recovery and reprocessing system according to claim 8, characterized in that: The filtered air in the step three is discharged into the atmosphere after being treated with water in the vent chimney. The carbon black product granulated in the step three is then conveyed and hoisted, stored in a product storage tank, and then packaged and stored by a packaging machine, thereby obtaining the carbon black waste residue recovery and reprocessing system.

10. A carbon black waste residue recovery and reprocessing system according to claim 9, characterized in that: Before using the equipment in steps 1, 2 and 3, check whether the grounding wire of the equipment is firm and whether the insulation protection of the power supply is safe and reliable. If the equipment is shut down or the power is off during operation, the power supply should be cut off to prevent sudden startup and accidents.