China has a long history in using agricultural pesticides. As early as over 3,000 years ago, our ancestors were able to use herbal pesticides to prevent pests. Mercury, arsenic and etc. were used in plant protection more than 2,000 years ago. In 1944, China successfully developed and produced organochlorine pesticide DDT. From 1950s, the pesticide industry of China has experienced the following phases: mass production of organochlorine pesticides in early 1950s, such as DDT and BHC. From 1956, highly effective pesticides such as organophosphorus pesticides parathion and dipterex, various agricultural pesticides such as bactericide, herbicide and plant growth regulating agents were developed. In middle of 1960s, agricultural pesticides processing and improved effectiveness of the pesticides such as powder, humidable powder, emulsion and etc. were developed. In 1970s, technical level of agricultural pesticide industry was improved and importance was attached to effluents treatment and environmental protection. In 1980s, highly effective and low residual new agricultural pesticides were developed to replace DDT, BHC and etc.

China has now more than 2,000 pesticides manufacturers with more than 250 varieties of technical toxicants and more than 1000 preparations of pesticides. China's total output of pesticides ranks the second in the world.

For decades of years, ECEC has kept close cooperation with scientific research institutions in China who are engaged in agricultural pesticides study and provided all kinds of agricultural pesticide plants to the customers with excellent engineering capabilities and rich engineering experience.

Typical projects completed by ECEC include: Hubei Sanonda 50t/a “Baohekang” agricultural pesticides Project, Ethyl Propionate Technical Toxicant Project of Anhui Fengle Agrochemical Co., Ltd., 1300t/a Fumaric Acid Derives Renovation Project of Suzhou Synthetic Chemical Works, Relocation & Renovation Project of Highly Effective & Low Toxic New Agricultural Pesticides (propiconazol, etc.) Production Line of Jiangsu Seven Continent Green Chemical Shares Co., Ltd.

Sample project: Relocation & Renovation Project of Highly Effective & Low Toxic New Agricultural Pesticides (propiconazol, etc.) Production Line, Jiangsu Seven Continent Green Chemical Shares Co., Ltd.

Plant capacity:
400t/a Propiconazol, 800t/a Metribuzin, 1000t/a 2-methyl furan, 1300t/a γ-butyrolactone

Raw material route:
Multi-stage synthesis route was adopted in propiconazol process: 2, 4-dichloro-acetophenone was used as raw material, and after bromanation and ketonization, coarse products was produced through condensation with triazolate. By refining the coarse product, propiconazol was obtained.

Dichloropinacolone was used as raw material for the metribuzin process. After hydrolysis, trimethyl lactic acid will be created, and then it will be oxidized to trimethyl acetone acid. After condensation of trimethyl acetone acid and thiocarbohydrazine, triaxinone will be produced, then it will be methylated into product metribuzin.

The coupled process of hydrogenation and dehydrogenation will be used in 2-methyl furan production. The hydrogen gas produced in the process of producing γ-butyrolactone by dehydrogenation of 1, 4 butylene glycol will be consumed in the process of producing 2-methyl furan by hydrogenation of furfural. The same catalyst will be used in the two reaction processes. Hydrogenation is an intense exothermic reaction, while dehydrogenation is an endothermic reaction. When the two processes are combined into one, it needn't add extra hydrogen; besides, the heating effect in the reaction process can be mitigated, which can increase the energy utilization rate.