Chemical & Petrochemical Industry

With its unique physical and chemical properties, such as high-temperature resistance, good chemical stability, excellent thermal conductivity, and favorable electrical conductivity, graphite finds extensive applications in the chemical and petrochemical industries. Here is a detailed introduction:

Reaction and Synthesis Equipment

  • Graphite Synthesis Furnace: It is a chemical synthesis/combustion device made from graphite as the base material and serves as a key piece of equipment for directly burning chlorine and hydrogen to produce hydrogen chloride gas. Hydrogen chloride is mainly used in the production of polyvinyl chloride (PVC), a core product in the chlor-alkali industry. As the country raises standards for the chlor-alkali chemical industry in terms of safety, environmental protection, and energy consumption, capacity restructuring and technological upgrades in related industries have created greater development opportunities for graphite synthesis furnaces.

  • Corrosion-Resistant Reaction Vessels: Chemical graphite, treated with acidic oxidizing agents, is used to manufacture corrosion-resistant equipment such as chemical reaction tanks and storage tanks. These vessels can withstand the erosion of corrosive media such as hydrochloric acid, sulfuric acid, and acetic acid, ensuring the safe progress of chemical reactions.

Heat Exchange Equipment

  • Graphite Heat Exchangers: These devices use graphite to make heat transfer components and are primarily used for heat exchange processes involving corrosive media such as hydrochloric acid, sulfuric acid, acetic acid, and phosphoric acid. Based on the impregnation process, the equipment can be classified into three types: synthetic resin, water glass resin, and asphalt impregnation. The structural types include perforated, tubular shell-and-tube, and plate heat exchangers. Among them, plate heat exchangers have a heat transfer efficiency 3 - 5 times higher than that of tubular ones and a heat recovery rate exceeding 90%. They are widely applied in chemical production scenarios such as chlor-alkali and petrochemical industries.

Catalyst Carriers

In catalytic reactions in the petrochemical industry, graphite can act as a catalyst carrier. It has a large specific surface area, providing more active sites for catalysts and enabling better dispersion of catalysts on its surface, thereby improving the efficiency and selectivity of catalytic reactions. Moreover, graphite's chemical stability ensures that it does not react with reactants or catalysts during the catalytic process, guaranteeing the stability and reliability of catalytic reactions.

Sealing Materials

  • Graphite possesses good flexibility and self-lubricating properties, allowing it to be made into various sealing gaskets, packing materials, and other sealing components for use in the sealing of pipelines, valves, pumps, and other equipment. In petrochemical production, many devices need to operate under high-temperature, high-pressure, and corrosive media conditions. Graphite sealing materials can maintain good sealing performance under these harsh conditions, preventing media leakage and ensuring the safety and stability of production.

Lubricating Materials

  • Due to its excellent lubricating properties, graphite's layered structure makes it easy for layers to slide relative to each other, so it is often used as a lubricant. In mechanical equipment in the petrochemical industry, such as compressors, pumps, and valves, the use of graphite lubricants can reduce friction and wear between equipment components, lower energy consumption, and extend the service life of the equipment.

Adsorption Materials

  • Graphite has certain adsorption properties and can adsorb some gas and liquid molecules. In waste gas and wastewater treatment in the petrochemical industry, graphite can be used as an adsorbent to remove harmful gases from waste gases and pollutants from wastewater, achieving environmental protection goals.