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The organic chemical industry in China
began to take its shape in the middle and late 1950s, largely
with the alcohol produced by fermentation of grain and the
acetylene produced from raw coal via calcium carbide as the
basic starting point and mainly for the development of their
derivant products. It has come through the stages of the initial
petrochemical industry with refinery gas and black oil as
raw materials, the large-scale petrochemical industry with
light oil and light diesel as raw materials and the rapid
development of organic raw material industry, etc.
In the past 20 years, the development of
petrochemical industry dominated by ethylene has greatly accelerated
the progress of the basic organic chemicals industry in China,
with a number of production plants with advanced technologies
and certain economic capacities constructed and put into production,
such as oxo-process butanol/octanol plants, cumin-process
carbolic acid/acetone plants, o-xylene oxidation-process PA
plants, ethylene-process vinyl acetate plants, high-pressure-process
melamine plants and MEK plants, etc., which make the organic
chemicals of China reach a new level. At present, the home
supply rate of the main varieties of organic chemicals in
China is around 70%, and the development of organic chemical
industry in China has entered a stage of structural adjustment
with quality improvement, costs reduction, varieties increasing
and technical renovation as the main subjects from the stage
of solely meeting the market demand.
Starting from the 1970s, ECEC has been involved
in the construction of organic chemical plants for more than
30 years, and has been mainly engaged in the engineering and
construction of the organic chemical production plants for
basic organic chemical raw materials, such as MEK, melamine,
methanol, formaldehyde and citric acid, as well as for alcohol/total
solvent production from grain processing, etc. ECEC has successively
undertaken the engineering and construction of nearly 30 basic
organic chemical plants, such as 12kt/a Melamine Plant of
Henan Zhongyuan Dahua Co., Ltd., 3000t/a Melamine Plant of
Iran, Wuhu Feiying 80Kt/a Formaldehyde Plant, 300kt/a Methanol
Plant of Zhongyuan Gas & Chemical Industry Co., Ltd.,
Suzhou Anli 5000t/a ACR Resin Plant, 25kt/a MEK Plant of Fushun
No.2 Petrochemical Works and 30 kt/a MEK Plant of Xinjiang
Tianli High and New-technology Co., Ltd., etc., while the
building of MEK plants in China are monopolized by ECEC.
In addition to the extensive cooperation
with relevant research institutes in China, ECEC always maintains
very close relationships with the licensors from western countries.
Sample project: 12kt/a
Melamine Plant, Henan Zhongyuan Dahua Co., Ltd.
Plant capacity: 12,000t/a
Source of technology: License from Eurotechnica, Italy
Process route: The 70% urea solution produced by the urea
plant is used as raw material, which is concentrated first
and then reacts under high-pressure without the existence
of any catalyst to produce melamine, which goes through the
procedures such as pressure reduction and separation, purification,
crystallization, drying, etc. to get the high-quality melamine
product. The by-product ammonium carbonate/carbomate solution
is recycled to the urea plant as raw material for urea production.
Year built: 2000.
Sample project: 30
kt/a MEK Plant, Xinjiang Tianli High & New-technology
Co., Ltd. (on turn-key basis)
Plant capacity: 30kt/a MEK
Source of technology: China
Process route: Mixed C4 is used as raw material, the isobutene
in which first reacts with methanol to produce MTBE (an important
gasoline additive). Then n-butene is extracted out from the
mixed C4 obtained after the treatment by an extractive rectification
process. The n-butene reacts with water in a hydration reaction
under high pressure to produce secondary butyl alcohol. The
secondary butyl alcohol is dehydrogenated to produce MEK,
from the rectification of which qualified MEK product (a high-quality
solvent with wide applications) is produced.
Year built: 2002.
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