[Chemical Knowledge]：Properties, uses, upstream and downstream raw materials, storage methods and mixed benzene indexes of mixed benzene

1. mixed benzene properties

Mixed benzene is a complex organic compound, mainly composed of benzene, toluene, xylene and a small amount of other aromatic hydrocarbons. As an important chemical raw material, benzene has obvious aromatic odor. Its physical properties include colorless transparent liquid, with volatile and highly flammable. In terms of chemical properties, the molecular structure of benzene is a six-carbon ring (C6H6), which has a high degree of stability and non-polar characteristics. The boiling point range of mixed benzene is about 80°C to 170°C, which makes it have good separation and purification characteristics in many industrial processes.

2. mixed benzene uses

1. As a basic chemical raw material

Mixed benzene has a wide range of uses in the chemical industry. Its main use is as a basic chemical raw material for the production of a series of important chemicals, such as phenol, styrene, cyclohexane and maleic anhydride. These chemicals are further used in the production of materials such as plastics, synthetic fibers, resins and rubbers.

2. Production solvent

Mixed benzene is also widely used as a solvent. Because of its good solubility and volatility, it is widely used in coatings, inks, adhesives and cleaning agents. Its solubility allows it to effectively dissolve a variety of resins, oils and waxes, improving the performance of these products.

3. as fuel

The high calorific value and flammability of mixed benzene make it also used as a fuel in some cases, especially in industrial combustion processes where high energy density is required.

3. mixed benzene upstream and downstream raw materials

1. Upstream raw materials

The main upstream feedstocks for mixed benzene are petroleum and coal tar. Through petroleum cracking and coking processes, mixed aromatics can be obtained, of which mixed benzene is an important component. Petroleum cracking is the decomposition of heavy petroleum into lighter components by heating, producing light hydrocarbons such as ethylene and propylene, and by-product mixed benzene. Coal tar is obtained by high-temperature dry distillation of coal, and its aromatic content is high, which is suitable as one of the sources of mixed benzene.

2. Downstream products

The downstream products of mixed benzene are abundant, covering many industries. For example, nitrobenzene is produced by nitration reaction, and aniline can be obtained by further reduction; toluene and xylene are produced by alkylation reaction, which are important chemical raw materials and solvents. The production of phenol and styrene involves the hydroxylation and dehydrogenation of benzene, which require precise control of reaction conditions and catalysts.

4. mixed benzene storage method

1. Storage requirements

Mixed benzene is a flammable liquid, so its storage requires special attention to fire prevention and explosion prevention. The storage environment should comply with relevant safety standards, including the use of explosion-proof equipment, the installation of fire-extinguishing devices and the maintenance of good ventilation. Storage containers are usually made of carbon steel or stainless steel to prevent corrosion and leakage.

2. Temperature and pressure control

Due to the strong volatility of mixed benzene, storage should try to maintain low temperature and low pressure, avoid direct sunlight and high temperature environment. Vessels shall be equipped with pressure relief devices to prevent danger from excessive pressure due to temperature increases.

3. Safety measures

In order to prevent leakage and fire, the storage area should be provided with safety warning signs and emergency measures, such as leakage emergency pool, fire water source and explosion-proof lamps. Staff should receive professional training to understand the hazards of mixed benzene and emergency treatment methods to ensure rapid response in emergencies.

5. Mixed Benzene Market Analysis

1. Supply and demand

The supply and demand relationship of the mixed benzene market is affected by the fluctuation of crude oil price and the demand of downstream products. In recent years, with the development of the global economy, the demand for mixed benzene continues to grow, especially in Asia, the rapid development of the chemical industry has led to the demand for mixed benzene. The supply side is heavily influenced by crude oil production and cracking technology, and there is some uncertainty in the market.

2. Price trends

The price of mixed benzene is mainly affected by the international oil price and market demand. Higher oil prices usually push up the production cost of mixed benzene, which in turn drives up its market price. Environmental policies and advances in production processes will also have an impact on prices. For example, tighter environmental policies may lead to increased production costs, while improvements in production processes may reduce production costs and increase market competitiveness.

3. Competitive landscape

The global mixed benzene market is highly competitive, with major producers including Shell, ExxonMobil, Sinopec and other large petrochemical companies. These companies occupy an important position in the market with their strong production capacity and technological advantages. Enterprises in some emerging market countries are also gradually rising, increasing market share through technology introduction and capacity expansion.

6. future development trend

As an important basic chemical raw material, mixed benzene has a broad market prospect. With the development of new materials and new technologies, the application field of mixed benzene will be further expanded. Green chemical industry and sustainable development will become the future development direction, by optimizing the process and improving the efficiency of resource utilization, reduce the impact on the environment. The development and application of bio-based aromatics is also expected to become an important trend in the future, further promoting the sustainable development of the mixed benzene industry.

7. conclusion

Mixed benzene has an important position in the chemical industry, and its properties determine its wide range of applications. The supply and demand relationship of upstream and downstream raw materials and the fluctuation of market price have a significant impact on the mixed benzene market. In the future, with the advancement of technology and the improvement of environmental protection requirements, the mixed benzene industry will develop in a more efficient, green and sustainable direction. Companies need to constantly innovate and optimize production processes to respond to market changes and remain competitive.