How to develop the most popular domestic formaldeh

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How to develop the domestic formaldehyde industry

how to develop the domestic formaldehyde industry

September 4, 2002

China's economy continues to develop steadily, and the demand for formaldehyde will increase at an average annual rate of 13%

it is estimated that the total demand for formaldehyde in the domestic market this year is about 2.65 million tons, and the total demand in 2005 will reach 4million

there are more than 540 formaldehyde manufacturers worldwide, with a total annual production capacity of about 28million tons. Among them, there are nearly 240 Chinese manufacturers, with a total annual production capacity of about 4.7 million tons; There are more than 50 manufacturers in the United States, with a total annual production capacity of about 4.7 million

tons; The total annual capacity of Germany is about 2.6 million tons; Japan's total annual production capacity is about 1.8 million tons; The total annual production capacity of the former Soviet Union is about 1.65 million tons; The total annual production capacity of Italy is about 1.3 million tons; The total annual production capacity of Indonesia is about 1.15 million tons. The sum of annual formaldehyde production capacity of the above countries and regions accounts for about 64% of the total global production capacity

at present, the production capacity of formaldehyde industry in developed countries has exceeded the consumption. Therefore, recently, some large foreign companies have to shut down some devices to maintain the balance between supply and demand. For example, due to the reduction in the demand for formaldehyde in plywood

adhesives, the largest formaldehyde producer in Japan, Mitsui chemical, has closed its 18000 ton/year formaldehyde plant in inazawa, and its 90000 ton/year formaldehyde plant in Maoyuan, reducing the total annual formaldehyde production capacity of Mitsui chemical by 31%. It is expected that in the next few years, the production capacity of formaldehyde abroad will grow slowly, and the new market demand

is mainly reflected in developing countries

in foreign countries, formaldehyde is mainly used to manufacture urea formaldehyde resin, phenolic resin and melamine formaldehyde resin. In addition, it is also used to produce acetal resin, 1,4-butanediol, polyol and Urotropine

the consumption structure of formaldehyde in the United States is: urea formaldehyde resin accounts for 24%, phenolic resin accounts for 21%, polyacetal resin accounts for 12%, alkyne

chemicals account for 13%, pentaerythritol accounts for 4.5%, hexamethylene tetramine accounts for 4%, melamine resin accounts for 3%, MDI accounts for 6%, methylaldehyde concentrate accounts for 4.5%, and others account for 8%

at present, almost all formaldehyde uses methanol air elastospray? Ch polyurethane spray thermal insulation material can provide thermal insulation and waterproof 1. It is prepared by oxidation method. According to the different types of catalysts used, it can be divided into iron molybdenum catalyst method and silver catalyst method. About 70% of the existing formaldehyde production units abroad use silver process, and most of the new formaldehyde units in recent years use iron molybdenum process

the formaldehyde device using iron molybdenum catalyst process generally has a large production capacity, with a methanol conversion rate of 95% ~

99%. The methanol consumption is low, and there is no need for distillation device. It can produce high concentration formaldehyde. The alcohol content in formaldehyde products is low,

the catalyst has a long service life, but the one-time investment is large and the power consumption is high

the silver method has the advantages of simple process, low investment, strong regulation ability, less formic acid content in the product, but low methanol conversion rate,

high unit consumption and short catalyst life. Commercial carbon fiber prepreg is manufactured, which has high requirements for methanol purity. The methanol content in formaldehyde products is high, and only low concentration

formaldehyde can be produced. In Western Europe, about 55% of the production capacity uses this technology

formaldehyde in China is mainly used in the production of adhesives, plastics, coatings, pentaerythritol, urotropine and other products. Among the

, the consumption of formaldehyde by adhesives accounts for a large proportion, up to 33%; Formaldehyde consumption in plastic production accounts for 15% of the total; The proportion of coating materials in formaldehyde consumption is about 5%

the continuous development of China's real estate, electronic and electrical, automotive and machinery industries, coupled with the fact that research units are actively developing downstream products of formaldehyde, will promote the increasing demand for formaldehyde

China's formaldehyde industry mainly uses silver process to produce low concentration formaldehyde with a concentration of 37%. In this way, in the production of formaldehyde products, 37% dilute formaldehyde is concentrated into more than 50% concentrated formaldehyde before further utilization. For the samples prepared by various methods, in addition to consuming a lot of power and manpower, a large amount of alcohol containing wastewater will be produced in the concentration process of dilute

formaldehyde. On the one hand, the production cost of downstream products of methyl

aldehyde will remain high, on the other hand, it will aggravate environmental pollution. In terms of downstream product development, China's formaldehyde industry is also far behind the level of developed countries. At present, there are hundreds of formaldehyde downstream products in developed countries,

while there are only a dozen in China, and the production process is backward. In order to make the formaldehyde industry in China develop healthily, we should pay special attention to

: first, expand the production scale. Accelerate the development of iron molybdenum process, concentrated formaldehyde production technology and its stable storage and transportation technology, or introduce foreign advanced production technology and build large-scale production devices. Second, vigorously develop the downstream products of formaldehyde,

open up the market. The Yangtze million ton plastic base has taken shape. According to Jiang Lianjia, at 11:00 a.m. on August 25, good news came from the Yangzi Petrochemical plastic plant. The company's 650000 ton ethylene transformation project's last set of terminal product installation, the 200000 ton/year polyethylene plant, was successfully started at one time, and produced high-quality plastic products. So far, Yangzi

Petrochemical has a plastic production capacity of 800000 tons/year, and has become one of the largest plastic manufacturers and suppliers in China

These high-quality plastic products will provide high-quality raw material support for promoting the economic development of Jiangsu and even East China, reduce China's dependence on foreign products, and promote the healthy development of related industries

China's petrochemical industry started late, and with the rapid development of economy, a huge market gap has formed, especially the high-quality plastic products have long relied on imports. In recent years, the annual plastic import volume has exceeded 50% of the domestic consumption, which has a broad market space. The development of petrochemical industry is in line with China's industrial policy. Yangzi Petrochemical's 650000 ton ethylene

olefin transformation project is a national key technological transformation project supported by the national financial interest discount loan, with a total investment of more than 4 billion yuan

After the completion of the transformation, the ethylene production capacity of Yangzi Petrochemical will increase from 400000 tons/year to more than 650000 tons/year, and the plastic production capacity will increase from 400000 tons/year to 800000 tons/year, becoming one of the largest petrochemical production bases in China. The poly

ethylene plant put into operation this time adopts the gas-phase process of the United States company, adopts the world's advanced petrochemical technology, and has the remarkable characteristics of

requiring surgery to remove the

process flow is short, material consumption and energy consumption are low, and the production technology of 61 brands of high-quality special materials, such as film materials, blow molding materials, pipe materials, plastic injection and

wire and cable materials, is introduced, It will greatly improve the quality of Yangzi Petrochemical's plastic products, optimize its product structure, enable Yangzi Petrochemical to have the ability to replace imported high-quality plastic special materials in large quantities,

improve the proportion of domestic special materials in China's plastic market, reduce the dependence of high-quality plastic special materials on foreign products, provide high-quality plastic special materials products for wire and cable and other related industries in China, and promote their healthy development, It also forms an interactive relationship between special materials and general materials with the 170000 tons of polyethylene that is good at

production of general materials, determines the production of

as needed, enhances Yangzi Petrochemical's ability to resist market risks, and obtains the maximum economic benefits

the polyethylene plant put into operation this time has an investment of about 750million yuan, which is currently the largest and most advanced production installation of its kind in China. This round of ethylene transformation is carried out by taking advantage of the buffer protection period after China's accession to the WTO. After about five years, the tariff of imported petrochemical products will be reduced by about 10%, and foreign companies will also enter China to enjoy "national treatment". From this point of view, this is also the last good opportunity for Yangzi Petrochemical to improve its competitiveness. The project was designed by Yangzi Petrochemical Design Institute and constructed by the fifth construction company. With the joint efforts of the participating units, it was completed and put into operation in advance. So far, all three new end product units of butadiene, polypropylene and polyethylene in the second round of ethylene

transformation project of Yangzi Petrochemical have been completed and put into operation

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