Research For Clean Technology And Engineering Problems Of Alkyl Substituted Thiophenol Compounds

In this study,the kinetics of the sulfonation reaction of alkyl substituted benzene were systematic researched.As the case of the sulfonation reaction of isopropylbenzene,the contents of the raw material isopropylbenzene and of the product o, m, p-isopropylbenzenesulfonate acid and thedual-4-isopropyl benzene sulfone were monitored during the reaction at constant temperature of5℃,15℃and25℃respectively.Based on these contents mentioned above,the kinetic constants k,the consecutive reaction frequency factors ko and the activatition energy values E of the main and deputy reactions were calculated by fitting regression equations and simultaneous equations.The regulation of the contents change of raw material and the products at different reaction temperature were revealed on the reaction mechanism.The kinetic parameters of each main and deputy reaction of the sulfonation reaction of isopropylbenzene at different temperature are listed as below:The consecutive reaction frequency factors(k01)and the activatition energy values(E1)of the product are3.63×107and2.41×103J·mol-1respectively,The consecutive reaction frequency factors(k02) and the activatition energy values(E2)of the product are6.56and1.99×103J·mol-1respectively;The consecutive reaction frequency factors(k03)and the activatition energy values(E3) of the product are1.14×102and6.4×10J·mol-1respectively,The consecutive reaction frequency factors(k04)and the activatition energy values(E4) of the positive reaction of the product are1.09×104and7.98×10J·mol-1respectively,The consecutive reaction frequency factors(k05)and the activatition energy values(E5) of the reverse reaction of the product are5.55×109and20.18×103J·mol-1respectively;The kinetic equations of the sulfonation reaction of isopropylbenzene are listed as below:-dCx/dt=3.63×107·cxp(-2.41×103/RT)CXCSO32+6.56·(-1.99×103/RT)CXCSO33+1.14×102·exp(-64×103/RT)CXCSO32+1.09×104·exp(6.4×103/RT)CXCY1CSO3-5.55×109·exp(20.18×103/RT)Cz; dCY1/dt=3.36×107·exp(-2.41×103/RT)CXCSO32-1.09×104·exp(6.4×103/RT)CXCY1CSO3+5.55×109·exp(20.18×103/RT)Cz; dCY2/dt=6.56·exp(-1.99×103/RT)CXCSO32; dCY3/dt=1.14×104·exp(-6.4×103/RT)CXCSO32 dCz/dt=1.09×104·exp(6.4×103/RT)CXCY1CSO3-5.55×109·exp(20.18×103/RT)Cz。To resolve the quantitative analysis of the organic sulfonic acid(sulfonate), the product is detected after esterification by GC-MS. This method could effectively monitors the sulfonation reaction of alkyl substituted benzene.To resolve the three industrial wastes, the ferrous Sulfate and the polyferric sulfate were successfully designed and synthesized with the mud iron as raw, which is the by-product of alkyl substituted thiophenol production. The process design and the process optimization of these two products were also studied to realize the environmental-friendly production of related products.