Research On The High-value Utilization Of Spent Fluid Catalytic Cracking Equilibrium Catalyst And Potassium Feldspar Powder

The project research on the high-value utilization of solid wastes and mineral resources, which is from the Fujian refinery FCC equilibrium catalyst and Fujian saxian potassium feldspar powder. Cordierite material was prepared by waste FCC equilibrium catalyst.4A Molecular Sieves、13X Molecular Sieves、LSX Molecular Sieves and zeolite based compound fertilizer were prepared by potassium feldspar powder.Taking waste FCC equilibrium catalyst, talc, alumina industry or quartzas as a raw material, when the proportion of waste FCC equilibrium catalys 61.42wt%、talc 37.68wt%、alumina industry 0.90%, the sintering temperature for 1200°C and a holding time for 2 hours, high purity cordierite material can to obtained successfully.Through the method of hydrothermal reaction,4A Molecular Sieves was synthesized by potassium feldspar with other chemicals. The reaction conditions and performance were primarily explorated by XRD、IR、TG-DSC、SEM、calcium ion exchange capacity、 whiteness, and so on. The results show that n(SiO2)/n(Al2O3)=2.0, n(H2O)/n(M20)= 45,n(M2O)/n(SiO2)=1.9, the crystallization temperature of 100 °C, the crystallization time of 3h to be the optimal synthesis process. The calcium ion exchange capacity reaches the national high-class product standards. By exploring the adsorption of methylene blue with 4A molecular sieve, which has some processing capability to dye wastewater was evaluated preliminarily.13X Molecular Sieves was synthesized by potassium feldspar with other chemicals. By experiment, n(H20)/n(M2O)=40, n(M2O)/n(SiO2)=1.4, the crystallization temperature of 98°C, the crystallization time of 7h to be the optimal synthesis process. Its bibulous rate reaches the state standards of chemical industry of China (HG/T2690-95). By exploring the degradation of pyridine solution with 13X molecular sieve, the effect of catalytic denitrification was evaluated preliminarily. At the same time, choosing to 13X molecular sieve as a carrier, by metal doping, CuO/ZnO/13X catalyst which has good photocatalytic denitrification performance can be prepared, the nitrogen removal rate of pyridine up to 87.03%.Taking potassium feldspar as a raw material, for exploration of the water nicotine、 sodium-potassium ratio、crystallization time and other factors, the optimum parameters of LSX was obtained. The optimal prescription was determined when the n(H20)/ n(M2O)=25、n(Na2O)/n(M2O)=0.7、hydrothermal crystallization 2h at 70°C, and then continue to heat up to 90 °C under crystallization 2h. Silica to alumina ratio n(SiO2) /n(Al2O3) of about 2.07. Meanwhile, lithium chemical modificationlithium of LSX was happened by using lithium nitrate, a preliminary inquiry showed that the nitrogen adsorption properties of LSX by lithiation raised to a great extent.Selecting 4A Molecular Sieves or 13X Molecular Sieves which obtained by potassium feldspar as sustained release carrier, compound with other chemical reagent that can provide nitrogen, potassium and phosphorus source, supplemented by a binder, then zeolite based compound fertilizer having a slow-release effect can be prepared. And traditional water immersion method was employed to preliminary assess its slow-release effect.