By confecting simulation corrosion solution of pressuring air cooler system of Maoming Petrification and using CMB-1510B portable instantaneous corrosion rate meter, the experimental inhibition efficiency of organic corrosion inhibitor of Na2Sx and its compound was evaluated.The results show that Na2Sx and its compound are excellent corrosion inhibitor for the corrosion system of reactor effluent air coolers. After compounding with BTA, Na2Sx have attained excellent inhibition effect at little dosage. Moreover, BTA could form protective film on metal surface which prevented depolarizing substances to transfer toward metal surface, and reduced corrosion rate of metal.

 

A series of MP-like catalysts LaAAl ₁₁O ₁₉ and LaAMnAl ₁₀O ₁₉ (A stands of Cd,Zn,Zr) were prepared by co-precipitation method. The structure and the properties of these catalysts were investigated by using BET,XRD techniques and activities of methane catalytic combustion. The influence of different transition metal on the morphological and catalytic activity of the catalysts was studied. The results show that the catalyst with good crystal is obtained after calcination at 1 200 ℃. And all catalysts have the high catalytic activity and stability. The introduction of different transition metal has much effect on the properties of catalysts. The synergism is observed between the different metal ion. Catalytic activity is enhanced by synergism. LaZnMnAl ₁₀O ₁₉  has the higher catalytic activity in methane combustion and its light-off T 10% is 472 ℃, total conversion  T 90% is 734 ℃.

The corrosion mechanism of system of hydrogenation reactor effluent air collers was approached. By confecting simulation corrosion solution, it was researched the effect of experimental in various conditions on annual corrosion rate by means of the corrosion rate testing equipment of resistance probe and CMB-1510B portable instantaneous corrosion rate meterage. The investigated conditions included concentration of corrosion inhibitor, corrosion factor(Kp), pH value and synergistic effect. Results show that BTA corrosion inhibitor is an excellent inhibitor for system of hydrogenating reactor effluent air coolers, there exists good synergistic effect between (NaPO ₃)6 and ZnSO ₄ compounds in NH ₄Cl solution; at the same time, also indicate that annual corrosion rate rises obviously with the increase of corrosion factor, annual corrosion rate rises obviously with the decrease of it when pH value changes in lower range, effect of high pH value on annual corrosion rate lessens on the whole.