Recently, China Chemical Tianchen Qixiang New Material Co., Ltd.’s nylon new material project phase I 2-methylpentamethylenediamine plant was successfully started up and produced the first batch of high-grade products. This device is the first 2-methylpentamethylenediamine production facility in China, and it is also the first 2-methylpentamethylenediamine production facility using the nation’s own technology, filling the blank of domestic 2-methylpentamethylenediamine products.
Source: Tianchen Qixiang
In recent years, the market has put forward higher requirements for curing agent performance, technology, application, etc. The successful operation of China Chemical Tianchen Qixiang 2-methylpentamethylenediamine plant will improve the adiponitrile industry chain, promote the upgrading of downstream demand and nylon The healthy development of the 66 industry is of great significance. At the same time, as a new type of amine curing agent, with the increasing market attention, 2-methylpentamethylenediamine is expected to be further developed and applied.
Source: Tianchen Qixiang
Nylon new material project
1. Project overview
Project location: Jinshan Industrial Park, Qilu Chemical Industry Zone, Zibo City, Shandong Province, south of Zibo Qixiang Tengda Chemical Co., Ltd. Project investment: The total investment of the project is 20 billion yuan, and the investment in the first phase is 10.4 billion. Project land: The total scale of the project land is about 3,000 mu, and the first phase covers an area of 1,800 mu. Project content: Annual production of 1 million tons of new nylon materials, 500,000 tons of di Amine, 500,000 tons of adiponitrile and co-production of 500,000 tons of acrylonitrile
2. Project progress
Acrylonitrile plant, successfully started up on March 22, 2022; hexamethylenediamine plant, successfully started up on March 31, 2022; adiponitrile plant, on July 31, 2022, butadiene-based adiponitrile The industrialized production project was successfully started and produced superior products. On March 1, 2023, China Chemical stated on the investor interaction platform that the company’s Tianchen Qixiang nylon new material project recently, the acrylonitrile plant is operating at full capacity, the southern line of the hydrocyanic acid plant is operating normally, and the adiponitrile and hexamethylenediamine plants are operating normally. Start-up production, supporting public works and auxiliary facilities are all in stable operation. With the gradual increase of load rate, the performance effect will gradually be reflected.
Introduction to 2-methylpentamethylenediamine
2-Methylpentamethylenediamine (MPMD) belongs to aliphatic amines. 2methylpentamethylenediamine composed of methyl branched chain and five-membered carbon chain contains two primary amino groups with different reactivity, which can be used for its modification. The product provides unique performance and excellent compatibility. The curing agent produced by using 2-methylpentamethylenediamine has low adduct viscosity, which can flexibly improve the curing agent formulation. The production process of butadiene hydrocyanation to produce adiponitrile is mainly divided into three parts: primary hydrocyanation, isomerization, and secondary hydrocyanation, of which the primary hydrocyanation and isomerization reaction sections are separated 3-pentenenitrile (3-PN), with hydrocyanic acid in the presence of a catalyst, mainly produces adiponitrile and dimethylglutaronitrile (MGN), etc. Methylglutaronitrile can be hydrogenated to synthesize methylpentamethylenediamine. The annual output of 300,000 tons of butadiene hydrocyanation adiponitrile production plant will produce more than 50,000 tons of 2-methylpentamethylenediamine. At the same time, 2-methylglutaronitrile is also a by-product in the production of adiponitrile by catalytic ammoniation of adipic acid. With the localization of adiponitrile, the by-products of adiponitrile, 2-methylpentamethylenediamine and 1,2-cyclohexanediamine, as new amine curing agents that are also epoxy resin amine curing agents, will gradually Mass production will gradually replace the current hot product polyetheramine.
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