First, the quality of precision drying equipment is poor. The manufacturing technology and key products of high-precision drying equipment still rely on imports.
Second, the company's R & D capacity is insufficient. Precision drying equipment does not have a certain amount of R&D investment products that have stayed at the low end and will be phased out by the tide of the times.
Enterprises should vigorously promote the original innovation of drying equipment, integrated innovation, and the ability to introduce, digest, absorb and reinnovate, and promote the development of products with independent intellectual property rights.
Take the road of resource-saving development, conduct comprehensive and multi-level energy-saving technological transformation, and vigorously develop drying technologies that apply renewable energy and industrial waste heat.
In the technical direction, we should strengthen research on automation, manufacturing processes, materials and materials design, and learn advanced foreign technologies.
With the changes in market demand, the domestic competitive landscape of the drying equipment industry has been broken. The development of the drying equipment industry in China has been highly valued by the world's peers. The needs of the country and the needs of the market are the cornerstones of innovation for drying equipment companies. Drying equipment manufacturing companies must conform to the development pattern of the industry, identify new positions, and constantly improve their competitiveness in competition with foreign manufacturers.
Benzene, an organic compound, is the simplest aromatic hydrocarbon with a chemical formula of C6H6. At room temperature, it is a sweet, flammable, colorless and transparent liquid with carcinogenic toxicity and a strong aromatic odor. It is insoluble in water, easily soluble in organic solvents, and can also be used as an organic solvent itself. The ring system of benzene is called benzene ring, and the structure after removing a hydrogen atom from the benzene ring is called phenyl, which is represented by Ph, so the chemical formula of benzene can also be written as PhH. Benzene is a basic petrochemical raw material, and its output and production technology are one of the symbols of a country's petrochemical development level.
On October 27, 2017, the list of carcinogens published by the World Health Organization's International Agency for Research on Cancer was preliminarily sorted out for reference, and benzene was included in the list of Class I carcinogens.
Foreign name: Benzene, benzol, benzeen
Alias: Rest oil
Chemical formula: C6H6
Molecular weight: 78.11
CAS login number: 71-43-2
EINECS accession number: 200-753-7
Melting point: 5.5℃
Boiling point: 80.1℃
Water soluble: insoluble
Density: 0.88 g/cm³
Flash point: -11℃
Application: Used as spices, dyes, plastics, medicines, explosives, rubber, etc.
Security description: S36/37; S45; S53
Hazard description: R11; R36/38; R45; R46; R48/23/24/25; R65
UN Dangerous Goods Number: 1114/1115
The benzene ring is the structure of the benzene molecule. It is a plane regular hexagon, each vertex is a carbon atom, and each carbon atom is combined with a hydrogen atom. The carbon-carbon bond in the benzene ring is a unique bond between single and double bonds, with a bond angle of 120° and a bond length of 1.40Å
Benzene Series Intermediates,2 4 6-Trimethylbenzaldeliyde,4-Iodo-3-Nitrobenzoic Acid Methyl Ester,4-Iodo-3-Nitrobenzoic Acid
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