TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The liquid phase catalyst comprises (in wt.%): basic catalyst (10-50), co-catalyst (10-40) and synergic adjusting agent (10-50). The basic catalyst is one or more component chosen from anhydrous aluminum chloride, ferric chloride, copper chloride, aluminum chloride, silicon chloride, manganese dioxide and zirconium dioxide. The co-catalyst is one or more component chosen from active aluminum oxide, rubber powder, active aluminum silicate, aluminosilicate, macroporous silica gel and macroporous molecular sieve. The synergic adjusting agent is one or more component chosen from bentonite, activated clay, kieselguhr, attapulgite and kaolin. The gas phase catalyst comprises Y-type molecular sieve (10-50), high silicon ZSM-5 molecular sieve (0-20), activated aluminum oxide (10-40), supporter (30-70) and binder (10-20), where active component is Y-type molecular sieve or composite of Y-type molecular sieve and high silicon ZSM-5 molecular sieve. The aluminosilicate is formed by using silicon oxide, aluminum oxide, rare earth metals, hydrogen and phosphorus modified elements. The refining process is performed using acid-alkali-free refining agent, which comprises (%mass) absorption settling agent (10-80), active component (5-10), cationic surfactant (0-10), nonionic surfactant (0-10), auxiliary components (0-5) and diesel (remaining quantity).    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The absorption settling agent is at least one component chosen from ethylenediamine, triethylamine, N-alkyl diethanolamine, cyclohexane, diethylenetriamine, triethylenediamine, triethylenetetramine, tetraethylenepentamine and their mixtures. The nonionic surfactant is one or more component chosen from ethanolamine, triethanolamine, isopropylamine, N-phenyldiethanolamine, ethylene and guanidine carbonic ester. The auxiliary component is one or more component chosen from triolein, p-nonylphenol, heptanol, n-caprylic alcohol and 2-octanol.    TECHNOLOGY FOCUS - POLYMERS - Preferred Component: The nonionic surfactant is one or more component chosen from polyoxyethylene dehydrated sorbierite oleate, polyoxyethylene dehydrated sorbierite dioleate, polyoxyethylene dehydrated sorbierite trioleate, polyoxyethylene nonionic surfactant and nonylphenol polyoxyethylene ether. Preferred Method: The preprocessing step involves dehydrating the waste fat and oils, and removing impurities, oil sludge, colloid and oxide from the waste fat and oils. The method involves catalytically cracking macromolecules in waste fat and oils in a catalytic cracking reactor and a gas phase catalytic tower under the action of liquid phase catalyst and gas phase catalyst at 350-550 degrees C. The method further involves recycling and burning the waste air and smoke heat. The method automatically and continuously feeds and discharges residues in a sealed space.