Many friends do not know about thermal cracking carbon black. This article will give you a comprehensive explanation of the detailed information of thermal cracking carbon black. Specifically, what is thermal cracking carbon black, thermal cracking carbon black production process, performance characteristics of thermal cracking carbon black, thermal cracking The classification of French carbon black and the range value of nitrogen adsorption specific surface area, the application of thermal cracking carbon black, the price and output of thermal cracking carbon black and other related knowledge points.
What is thermal cracking carbon black
Thermal cracking carbon black uses natural gas, coke oven gas or heavy liquid hydrocarbons as raw materials, and generates carbon black through high temperature pyrolysis in the absence of oxygen and flames, which is called thermal cracking carbon black, also known as thermal cracking black.
Thermal cracking carbon black production process
The pyrolysis method uses natural gas, coke oven gas or heavy liquid hydrocarbons as raw materials, and adopts a batch production process with two production furnaces as a group. The production process and heating process are alternately carried out in the production furnace, and continuous production is possible. In the preheated reaction furnace, the air is isolated, and the method of intermittent (two stages of combustion heat storage and thermal decomposition) or continuous (single thermal decomposition) pyrolysis to generate carbon black is carried out. This carbon black produced by cracking is called thermal black.
Performance characteristics of thermal cracking carbon black
Pyrolytic carbon black has the lowest specific surface area among carbon black varieties, basically exists as a single spherical particle, does not sinter or coalesce into aggregates, and its surface oxygen content is very small (0.1%-0.3%). The carbon black produced by pyrolysis has the characteristics of high purity, less hard carbon, low ash content and low sulfur content. Thermal cracking carbon black also has special performance, low structure and smooth surface, which makes it superior to natural gas semi-reinforced carbon black in terms of processability, filling, resilience and electrical resistance.
Classification of thermal carbon black and range value of nitrogen adsorption specific surface area
Thermal cracking carbon black mainly has three varieties: medium thermal cracking carbon black, non-polluting medium thermal cracking carbon black and fine thermal cracking carbon black. The nitrogen adsorption specific surface area of medium thermal cracking carbon black is 6-10㎡/g, and the nitrogen adsorption specific surface area of fine thermal cracking carbon black is 10-15㎡/g.
Uses of thermal cracking carbon black
In addition to the traditional use, thermal cracking carbon black is opening up new application fields. In addition to being used as a filler in the rubber industry, thermal cracking carbon black is also widely used in wires, cables, plastics, refractory materials, metallurgy, video tapes, etc. industry. In the metallurgical industry, thermal cracking carbon black is required for the production of chromium, solar silicon, titanium, vanadium, tantalum and tungsten carbide.
Price and output of thermal cracking carbon black
Thermal cracking carbon black is the lowest price category in the existing carbon black production process cost. However, due to the fact that the source of carbon in the pyrolysis method is natural gas, with the development of the natural gas industry, the use of natural gas is becoming wider and wider, and its price is also rising. For economic considerations, the production capacity of thermal cracking carbon black less.