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Environmentally friendly carbon black production technology

A production process, environmentally friendly technology, applied in fibrous fillers and other directions, can solve problems such as difficult to achieve, carcinogenicity, etc., and achieve the effect of increasing the frequency of molecular collisions

Active Publication Date: 2018-02-16
HANGZHOU FUCHUNJIANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Conventional carbon black products contain a certain amount of polycyclic aromatic hydrocarbons (PAHS), some of which are carcinogenic, such as benzoαpyrene, benzoαanthracene, etc. Therefore, it is difficult for ordinary environmentally friendly carbon black end products to achieve long-term Requirements for polycyclic aromatic hydrocarbons (PAHS) for materials in contact with human body (the sum of 18 items should be less than 10ppm)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0019] 1) Choose low-density 100% coal tar CBO-01 as carbon black raw material oil;

[0020] 2) The raw oil is mixed with the 1800°C high-temperature rotating double air flow in the NTD section of the new reaction furnace (the distance from the nozzle outlet of the raw material oil gun to the end face of the throat), so that the aromatic hydrocarbon mixture is fully cracked into carbon crystal nuclei, and then carbon black is formed in the reaction section Aggregates.

[0021] 3) Set the length of QTD (the distance from the end of the throat to the primary quenching water gun) to 4m, and quench in reverse quenching mode to terminate the carbon black reaction.

[0022] 4) The carbon black flue gas is collected and separated by the main bag filter, and the separated tail gas is used for heating of the tail gas furnace and boiler power generation, and the carbon black is stored after granulation and drying.

Embodiment example 2

[0024] 1) Select low-density coal tar CBO-01 and ethylene tar CBO-03 with a ratio of 8:2 as carbon black raw material oil;

[0025] 2) The raw oil is mixed with the 1800°C high-temperature rotating double air flow in the NTD section of the new reaction furnace (the distance from the nozzle outlet of the raw material oil gun to the end face of the throat), so that the aromatic hydrocarbon mixture is fully cracked into carbon crystal nuclei, and then carbon black is formed in the reaction section Aggregates.

[0026] 3) Set the length of QTD (the distance from the end of the throat to the primary quenching water gun) to 6m, and quench in reverse quenching mode to terminate the carbon black reaction.

[0027] 4) The carbon black flue gas is collected and separated by the main bag filter, and the separated tail gas is used for heating of the tail gas furnace and boiler power generation, and the carbon black is stored after granulation and drying.

Embodiment example 3

[0029] 1) Select low-density coal tar CBO-01 and ethylene tar CBO-03 with a ratio of 7:3 as carbon black raw material oil;

[0030] 2) The raw oil is mixed with the 1800°C high-temperature rotating double air flow in the NTD section of the new reaction furnace (the distance from the nozzle outlet of the raw material oil gun to the end face of the throat), so that the aromatic hydrocarbon mixture is fully cracked into carbon crystal nuclei, and then carbon black is formed in the reaction section Aggregates.

[0031] 3) Set the length of QTD (the distance from the end of the throat to the primary quenching water gun) to 10m, and quench in reverse quenching mode to terminate the carbon black reaction.

[0032] 4) The carbon black flue gas is collected and separated by the main bag filter, and the separated tail gas is used for heating of the tail gas furnace and boiler power generation, and the carbon black is stored after granulation and drying.

[0033] After adopting the pres...

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Abstract

An environmentally friendly carbon black production technology comprises the following steps that 1, low-density coal tar CBO-01 and ethylene tar CBO-03 are prepared according to the weight ratio of 10:0 or 8:2 or 7:3 to obtain carbon black raw oil; 2, the raw oil is mixed with dual high-temperature rotating airflows of 1800 DEG C at an NTD section from a raw oil gun jet nozzle outlet of a novel reacting furnace to the end face of a choke; 3, a QTD section, namely, the distance between the end face of the choke and a primary rapid cooling water gun, is extended, and oxidative decomposition of polycyclic aromatic hydrocarbon (PAHS) left in the mixture is ensured; 4, carbon black smoke is collected and separated by a main bag filter, separated exhaust gas is used for heating of an exhaust gas furnace and power generation of a boiler, and carbon black is granulated and dried and then is stored. The environmentally friendly carbon black production technology can not only thoroughly reduce the carbon black PAHS content, and can also avoid the shortcoming of carbon black surface property changes brought by a common environmentally friendly carbon black aftertreatment measure.

Description

technical field [0001] The invention relates to the field of carbon black production, in particular to an environment-friendly carbon black technology for producing polycyclic aromatic hydrocarbons (PAHS) with extremely low content. Background technique [0002] Conventional carbon black products contain a certain amount of polycyclic aromatic hydrocarbons (PAHS), some of which are carcinogenic, such as benzoαpyrene, benzoαanthracene, etc. Therefore, it is difficult for ordinary environmentally friendly carbon black end products to achieve long-term Requirements for polycyclic aromatic hydrocarbons (PAHS) for materials that come into contact with the human body (the sum of the 18 items should be less than 10ppm). Contents of the invention [0003] The invention provides an environment-friendly carbon black production technology for directly controlling the generation and residue of polycyclic aromatic hydrocarbons (PAHS) in the carbon black generation reaction. [0004] T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/50
CPCC09C1/50
Inventor 孙亚光蒋利萍徐鑫泉
Owner HANGZHOU FUCHUNJIANG IND