Another enterprise EIA passed!

Recently, Xuwei New District of Lianyungang issued approval opinions on the EIA impact report of Ascend Functional Materials (Lianyungang) Co.
, Ltd.
's 200,000-ton hexamethylenediamine project
.
With a total investment of 1.
29 billion yuan, the company plans to build a 200,000-ton/year hexanediamine synthesis unit, a 200,000-ton/year hexanediamine refining unit and supporting public works and auxiliary facilities in the Lianyungang Petrochemical Industrial Base
.

On the afternoon of January 12 this year, Xuwei New District and Ascend Functional Materials Co.
, Ltd.
held a signing ceremony for the nylon resin industry chain at the Land Bridge Product Exhibition Center
.
Ascend, a hexamethylene diamine giant, announced that it will build a new production base in Xuwei New District, Lianyungang City, Jiangsu Province, China to produce hexamethylene diamine and specialty chemicals, further expanding its global presence
.
The investment is Ascend's first chemical production site outside the United States and the company's largest investment outside the United States to date
.
Ascend's Lianyungang production base will start construction in 2022 and is expected to officially start production in the second half of 2023
.

As an important chemical raw material, hexamethylenediamine is subject to the raw material adiponitrile.
At present, the domestic hexamethylenediamine market is mainly occupied by foreign companies, such as INVISTA, Ascend and BASF
.
With the advancement of the localization process of adiponitrile technology, domestic hexamethylene diamine is also accelerating the expansion of production capacity
.

Several projects welcome new progress

June 29

Chongqing Fuling District held a centralized start-up and completion ceremony for major projects in the second quarter of 2022.
Among them, the Chongqing Huafeng 300,000-ton/year adiponitrile project (phase three) and the 300,000-ton/year nylon 66 integrated project (phase two) were completed.
The 300,000-ton/year nylon 66 integration project (phase three) started on the same day
.
Chongqing Huafeng has built two sets of 50,000 tons/year adiponitrile production units using the adipic acid method to produce adiponitrile
.
The three-phase project completed this time is designed and constructed on the basis of the construction and operation experience of the previous two phases.
The construction content includes 100,000 tons/year of adiponitrile and 100,000 tons/year of hexamethylene diamine and other main units.
supporting facilities
.

mid-May

Wanhua Chemical's 1.
8 million tons/year MDI technical transformation project and 180,000 tons/year hexamethylenediamine project made the first public announcement of environmental impact assessment
.
Wanhua Chemical (Ningbo) Co.
, Ltd.
will carry out technical transformation of the existing MDI plant to increase the total production capacity of the MDI plant to 1.
8 million tons/year; build a new 280,000 tons/year modified MDI plant; build a new set of 18 10,000 tons/year hexamethylene diamine plant; rebuild 120,000 tons/year oxychlorination plant (Sumitomo Technology) to 240,000 tons/year oxychlorination plant (Wanhua self-developed technology); Carry out technical transformation to match the production capacity requirements of MDI devices
.

May 13

Fujian Fuhua Gulei Petrochemical Co.
, Ltd.
(hereinafter referred to as "Fuhua Gulei Petrochemical") has an annual output of 200,000 tons of hexamethylene diamine, 300,000 tons of adipic acid and 400,000 tons of nylon 66 projects for environmental impact assessment.
Public notice
.
It is reported that as early as February 26, Fuhua Gulei Petrochemical's 400,000-ton adiponitrile and 260,000-ton acrylonitrile project was accepted for environmental impact assessment, which provided raw material support for the company's nylon 66 project
.
So far, the scale of domestic nylon 66 industry has been expanded again.
At the same time, Fuhua Gulei Petrochemical has formed a closed-loop industrial chain of "adiponitrile-hexanediamine-nylon 66"
.

May 5

The nylon 66 new material project of Ningxia Ruitai Technology Co.
, Ltd.
was successfully started up at one time.
This is also the first domestic caprolactam-to-hexamethylene diamine plant
.
Ningxia Ruitai Technology Co.
, Ltd.
is a joint-stock subsidiary invested and established by Jiangsu Yangnong Chemical Group Co.
, Ltd.
It is another important production base built by Yangnong Group in the west
.

The nylon 66 new material project of Ningxia Ruitai Technology Co.
, Ltd.
includes an annual output of 40,000 tons of nylon 66 and an annual output of 25,000 tons of hexamethylenediamine production equipment.
It is a key project in Ningxia Autonomous Region, with a total investment of 980 million yuan.
Construction will start in April and be completed in February 2022
.

March 31

The hexamethylene diamine plant of Tianchen Qixiang nylon new material project invested and constructed by Sinochem in Zibo, Shandong Province was successfully started at one time, and the first batch of qualified products were produced and rolled off the production line
.

Hexanediamine production process

The main use of hexamethylene diamine is to react with adipic acid to produce PA66, which can be produced by adiponitrile, caprolactam, etc.
, but almost all methods of large-scale production of hexamethylene diamine are made by hydrogenating adiponitrile
.
Therefore, PA66 is essentially completely dominated by adiponitrile
.
The preparation technology of adiponitrile mainly includes butadiene direct hydrocyanation method, acrylonitrile electrolytic dimerization method, adipic acid catalytic ammonia removal method and other process routes
.
Among them, the direct hydrocyanation of butadiene is regarded as the most advanced, ideal and important production process route due to its cheap and easily available raw materials, short route, no pollution, low energy consumption and low cost
.

At present, the global production capacity of hexamethylene diamine is mainly concentrated in INVISTA, BASF, Ascend, Shenma and other enterprises, and the industry concentration is relatively high.
Nitrile
.
On the surface, the self-sufficiency rate of hexamethylenediamine in China is as high as 90%; however, due to the limitation of the output of raw material adiponitrile, the supply is still in short supply
.

Due to the high monopoly of adiponitrile by foreign manufacturers, the development and application of downstream industries are seriously affected
.
Due to the strong demand for nylon 66, nylon 610, HDI, etc.
, China's demand for hexamethylenediamine is also rising
.

Ethylenediamine has a bright future

In China, the rapid development of automobile, textile, paint, electrical and electronic and construction industries is the leading factor driving the demand for hexamethylenediamine
.
Especially in the fields of automobiles and coatings, the growth is particularly rapid.
The popularization and promotion of lightweight vehicles and new energy vehicles will further promote the consumer demand for nylon 66
.
In addition, due to the limited production capacity of hexamethylenediamine in China, the development of downstream products has been limited.
In the future, the rapid expansion of hexamethylenediamine production capacity will gradually promote the development of downstream industries, and the apparent consumption will increase steadily
.
It is expected that the growth rate of hexamethylenediamine consumption will be about 6.
8% in the next few years
.

It can be foreseen that with the resolution of problems such as hexamethylenediamine production raw materials and production technology, China's hexamethylenediamine market will be further expanded
.