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| Analysis of crack problems butadiene dimer
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| 发布时间：2013.09.21 新闻来源：YUHUAN SHIFENG RUBBER PRODUCTS FACTORY 浏览次数： |
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September 9 , Daqing Petrochemical Company Quality Inspection Center of butadiene analysis of the data showed that the purity of 99.99 % dimer content of 13 mg / kg , has fully met the national standard. This is the analysis of the butadiene dimer implement the new national standard for the first time in 13 years to achieve the national standard.
Butadiene dimer content analysis is an important indicator , with the accurate analysis indicators butadiene in order to ensure product quality. Analysis of butadiene dimer national standards implemented in 1985 . 1999 National Quality and Technical Supervision trace of butadiene dimer measurement standard has been revised within the industry said that the new national standard . New national standard for the industrial use of the butadiene content of not less than 5 mg / kg of the dimer was measured , analyzed by gas chromatography , dimers revised index of not more than 1000 mg / kg , product purity of butadiene and total acetylene , dimers and other indicators put forward higher requirements.
But the reporter has learned that the implementation of the new national standard in 13 years , the domestic butadiene dimer analysis has not reached the national standard. Industry insiders say that the biggest problem is that butadiene product analysis autosampler . New national standard in the analysis of liquid samples should . The chemical industry has been using the traditional syringe injection , but the industrial use of butadiene is a colorless gas at room temperature , insoluble in water and soluble in organic solvents, its chemical properties and lively , easy self-polymerization , volatile. Since the introduction of the new national standard , as well as by the volatile sample feeders and other restrictions, domestic butadiene analysis has poor reproducibility , stability analysis is not high , 13 years of this analysis of the project has been unable to fully meet the national standards.
This year, the Daqing Petrochemical Company Quality Inspection Center of sampling and analysis of butadiene by tracking the entire process , from analytical instruments, standard samples and sample preparation methods , etc., for the implementation of GB problems implemented one by one and repeated scrutiny executable program . They take advantage of the favorable opportunity of butadiene plant starts , transform yourself analytical instruments , changing the injection method , taking the liquid injection valve operation , every four hours of the samples were analyzed. The sample and standard samples were injected into the chromatograph, reference standard samples of each analyte peak area ratio of test content and dimer content . After repeated for more than 70 sets of data comparison , and ultimately solve the problem of butadiene analysis standards , improve product analysis accuracy.
Butadiene is an important basic organic raw materials and petrochemical synthetic rubber monomer olefin feedstock in the petrochemical industry in the position after the ethylene and propylene. |
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