Acceptance of high-efficiency pesticide green preparation technology

Recently, the national key R&D project "Green Preparation Technology of Efficient Pesticides and Intermediates" led by Hunan Haili Chemical Co.

According to Liu Weidong, the project leader and chairman of Hunan Haili, the project was approved in July 2017 and completed with 15 units including Hunan Research Institute of Chemical Industry Co.

Liu Weidong pointed out that the development of low-toxicity and low-residue pesticide varieties is an inevitable choice

The project team overcame key technical difficulties such as the efficient and highly selective oxidation of arylmethyl to prepare aryl formic acid, the preparation of (S)-hydroxyindanone methyl ester, the key intermediate of chiral pesticide indoxacarb, and the preparation of benzonitrile by continuous ammonia oxidation, and developed Continuous oxidation key equipment and industrialized complete sets of integrated common technologies, arylmethyl catalytic oxidation common technologies, asymmetric catalytic oxidation new technologies, ammonia oxidation catalysts that are resistant to chlorine corrosion and inhibit dechlorination, have formed a catalytic oxidation system with independent intellectual property rights and multi-dimensional The core technology and equipment of multiphase reaction

The project has also built 8 sets of production units, including 3 thousand-ton green production demonstration lines, which have realized the application demonstration of key equipment and industrialized complete sets of integrated technologies

The implementation of this project meets the major needs of national food security, zero growth of pesticides and fertilizers, and transformation and upgrading of the pesticide industry