醋酸生产采用甲醇羰基合成法。甲醇羰基合成法中较为典型的生产工艺有Monsanto/BP和Halcon/Eastman两种。前者则采用铑催化剂，后者采用非贵金属催化剂系统即醋酸镍/甲基碘/四苯基锡系催化剂。近年来又出现两种新工艺，即Celanese的AO Plus工艺(酸优化工艺)和BP Chemicals基于铱催化剂的Cativa工艺。项目采用两中新工艺中的一种，以枝江市楚天化工园区的20万吨甲醇为原料，CO由园区内shell粉煤气化炉提供。
联 系 人：覃传发 朱华民
联系电话：013308609509 013997725018 0717-4501501
Project with Annual Production Capacity of 300,000 Tons of Acetic Acid
A. Prospect Analysis
Acetic acid is an important and organic chemical industrial raw material. It’s mainly used to produce monomer of the vinyl acetate, acetic anhydride, terephthalic acid (PTA), polyvinyl alcohol, acetic ester, acetyl cellulose, etc.. It has extensive uses in chemical industry, light textile, medicine, dyestuffs, etc.. In recent years, because of the development of PTA and the downstream products of acetic acid, the acetic acid has become the minority petrochemical industry product which is increasing rapidly.
As a result of development of PTA and the downriver products of acetic acid, it is expected that in 2007 and in 2010 the global annual productivity of acetic acid can respectively reach 10640000 tons and 11010000 tons, the annual output of acetic acid can hopeful respectively reach 8320000 ton and 9050000 tons of the same class.
The market potential of acetic acid in our country is huge, at present, there are more than 90 sets of acetic acid productions installment in our country , only has 12 enterprises with the scale above ten thousand tons . The domestic and foreign productions merchant in abundance invests and constructs production installment with large-scale in China, the domestic productivity of acetic acid is rapidly growing now.
Because of growth of price of the methyl alcohol and demand drawing of terephthalic acid, in recent years, the price of acetic acid is raising high, the market quotation is favoring. The domestic average market price of acetic acid already grew from 6500 Yuan / tons to 8000 Yuan / tons at the end of 2004.From now on , the demand quantity acetic acid in our country will continue to grow in the high speed, the fast development of the downriver industrial of acetic acid such as acetic acid ethylene, terephthalic acid and acetic anhydride / the acetyl cellulose and so on will be the main driving influence of the growing expense of acetic acid.
B. Construction Condition of the Project
The project is planning to build in economic and technical development zone in Zhijiang, Hubei Province, the condition is superior, it is suitable for developing this project.
(1) Richly endowed by natural with the electricity, water, natural gas condition. It possesses 15 substations in the whole city. The five state-level large-scale hydropower stations, such as the Three Gorges Dam, GeZhou Dam, Geheyan Dam, GaoBazhou Dam and ShuiBuya Dam ,are less than 70 kms away from it, it’s usually called “the corridor of output electric power in the Three Gorges area”. There is a waterworks of producing 100,000 tons of water daily in Zhijiang urban area (daily water yield about 30,000 tons now). The state major natural gas plumbing project ZhongWu line traverses here, there is the web site to flow separately to Hunan and Xiangfan in Zhijiang.
(2) The position is superior. Zhijiang is in the middle of the whole country. Taking Zhijiang as the center of a circle, within 600 kms, you can reach 9 provincial capitals,such as Xi’an, Chongqing, Chengdu, Guiyang, Nanchang, Changsha, Wuhan, Hefei, Zhengzhou and some prefectural-level cities.
(3) Convenient traffic. The Yangtze River comes across the city from west to east. Jiaoliu railway traverses 37 kms from north and south in Zhijiang with one second class freight transportation marshalling yard and two fourth class freight transport station in the city. Shanghai-Chengdu freeway runs in parallel lines with No.318 national road across Zhijiang. Sanxia International Airport is only 30 kms away from the urban area.There are 8 ports and 46 berths along the 95.5 kms line of the Yangtze River in the city. The handling capacity of annual freight transportation is more than 3 million tons. It possesses the three-dimensional network of communication lines that waterway, highway, railway and aviation are well matched.
(4) The workforce resources are quite abundant.The population of labour in Zhijiang is 174100, 95% of people passed education above special secondary school. The average monthly salary of the local workforce is about 500 yuan.
The production of acetic acid adopts the carbonyl synthetic method of methyl alcohol. The comparatively typical production technology is Monsanto/BP and Halcon/Eastman in the carbonyl synthetic method of methyl alcohol. The former adopts rhodium catalyst. It is noble metal catalyst system acetic acid nickel / methyl iodine / tetraphenyl tin department catalyst for the latter not to adopt. Two kinds of new crafts appear again in recent years, namely AO Plus craft (acid optimizes the craft) of Celanese and BP Chemicals Cativa craft based on iridium catalyst. The project adopts one of the two Sino-Singaporean crafts.The raw materials with 200,000 tons of methyl alcohol can get in Chutian Chemical Industrial Zone in Zhijiang city.The carbonic oxide can be supplied by the shell fine coal gasification stove in the zone.
D.Project Investment and Economic Benefits
Total investment: 800 million yuan
Annual output: 300,000 tons
Annual production value: 14 billion yuan
In addition, if we use the synthetic gas produced by shell fine coal gasification stove as the material and use the individual reactor and many component parts catalyst system to enable formating and transform angrily into the acetic acid, that will save some expenses in technological design , installing building materials and purification. The economic benefits of the project will be better.
Unit: Zhijiang Investment Promotion and Administration Bureau
Liaison:Qin Chuanfa, Zhu Huamin
Telephone:013308609509 013997725018 0717-4501501
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