As an important raw material in the production of carbon products, the chemical composition of coal pitch directly affects the performance and quality of the final product. Among the many chemical components, sulfur content is a key indicator that has a significant impact on the production process and product characteristics of carbon products. In this paper, we will delve into the specific impact of sulfur content in coal pitch on the production of carbon products, and analyze it from two aspects: chemical principles and production practices.
First of all, from the perspective of chemical principles, the existence form and reactivity of sulfur in coal pitch have a direct impact on the performance of carbon products. The sulfur in coal pitch is mainly in the form of organic sulfur, such as mercaptans, sulfides, etc. Under high temperature conditions, these organic sulfurs will undergo pyrolysis reactions to generate hydrogen sulfide and other gases, resulting in defects such as porosity and cracks in carbon products. At the same time, sulfur also reacts with the carbon element in carbon products to form carbon-sulfur compounds, which affects the mechanical strength and electrical properties of the product. Therefore, controlling the sulfur content in coal pitch is essential to ensure the quality of carbon products.
Secondly, from the perspective of production practice, the sulfur content in coal pitch also has a non-negligible impact on the production process of carbon products. In the production process, high sulfur content of coal pitch may lead to corrosion and clogging of production equipment, affecting production efficiency and product stability. In addition, coal pitch with high sulfur content may also increase exhaust emissions in the production process and cause environmental pollution. Therefore, in the production of carbon products, it is necessary to choose coal pitch with low sulfur content as raw material, and at the same time take appropriate technological measures, such as adding desulfurizer and optimizing pyrolysis conditions, to reduce the negative impact of sulfur content on the production process.
However, it is important to note that the lower the sulfur content in coal pitch, the better. The right amount of sulfur content can improve some properties of carbon products to a certain extent, such as electrical conductivity and oxidation resistance. Therefore, in the production of carbon products, the sulfur content in coal pitch should be reasonably controlled according to specific product requirements and performance requirements.
In addition to the direct impact, the sulfur content in coal pitch may also indirectly affect the production cost and market competitiveness of carbon products. Coal pitch with high sulphur content tends to be lower, but the use of such feedstocks can lead to lower product quality, reduced production efficiency, and increased environmental remediation costs. Therefore, in the production of carbon products, it is necessary to comprehensively consider the cost of raw materials, product quality, production efficiency and environmental protection, and select suitable coal asphalt as raw materials.