Although it is known that the main area of butadiene is mainly synthetic rubber, more than 70 per cent of its uses are used to manufacture synthetic rubber, there is a small but emerging domestic use of butadiene, i. E. Diazole。
A brief description of the hepium
The diazine is a non-coloured liquid with a slight scent. It's the middle of the nylon. Micro soluble in water, ether, in alcohol. It's hot and hot. Reaction with stronger oxidizers. Thermally released toxic nitrogen oxide smoke。
Diazine production process
1. Adipic acid aminoization
The presence of adipic acid and excess ammonia in catalyst phosphate or its salts or esters reacts at a temperature of 270-290°c to produce ammonium diadiate, which is then heated and dehydrated to produce coarsed diazine and refined products. Raw material consumption quota: 1606 kg/t of dioxidated acid, lsd 370 kg/t, sodium hydroxide 36kg/t。
Collapse butadiene method
Also the methods of cyanide and direct hydrogen cyanide。
3. Collapision of acrylic electrolyte dipolymerization
The electrolyte is methamphetamine sulfate with a temperature of 50-60°c and a collection rate of 92-95% for diazine. The acrylic acrylic-hydrodiplomosome process may also use gas-catalysed hydrogen by acrylic catalysts at 200-300°c, 0. 1-0. 3 mpa. Raw material consumption quota: acrylate 1100 kg/t, sulphate 80kg/t。
Heptonium global energy analysis
Global diazine energy distribution
According to incomplete statistics from the rmi network, in 2014 the global capacity of the americium reached 1. 9 million tons per year, more than the demand for it, concentrated mainly in enterprises in the united states of america, such as inveida, france, rodia and the united states of america, and occupied half of the americium, while the domestic market saw less overall production, higher import dependence and greater domestic monopoly on imported products。
Analysis of trends in the development of the domestic diazine device process
The processes of diazole production are divided into the butadiene, acrylene and acrylic acid methods, which have been phased out of the market for cost reasons. A domestic company in shandong produces diazine for the acrylic method, which, as a result of its 15-year installation, has no intention of restarting the car. In shanghai, 200,000 tonnes/year of butadiene are produced. Although the sharp increase in the price of butadiene in 2011 had significantly raised the price of americium products and seriously eroded the profits of 66 domestic nylon manufacturers。
In recent years, however, demand for synthetic rubber caused by the tyre industry has shrunk, thus slowing down the price of butadiene, especially for 15 years when the price of butadiene has been at a long low level and the production of diazole as part of the butadiene method has had a high productive profit. Second, in terms of environmental protection, the acrylic and acdolic acids are subject to certain constraints, and the butadiene method is the most important trend in the development of the later acoustic diazine process, thus provoking small demand for butadiene。
In its 25 years of existence, the longzhhong (1988) has more than 90 per cent of the country's supply chain customer resources for petrochemical products, the first of its kind being the precision-marketing model of the b2b3. 0 industry, which simultaneously operates the londo petrochemical network, petrochemicals, and security trading platforms, officially opening the 4. 0 era of the petrochemicals industry in 2014。
