Patent ID: 8535517

Claim:
A method for treating waste petroleum, comprising the following steps of: (a) mixing a 10-15% by weight mixed solution of sulfuric acid and nitric acid at a ratio of 1:2, with a 85-90% by weight waste petroleum; (b) producing precipitates, ion products containing at least one ion selected from 3H +3 , SO4 −2 , and NO 3 − , and modified waste petroleum by the mixing step (a); (c) adding a 10-15% by weight saturated aqueous sodium hydroxide solution to a 85-90% by weight homogeneous mixture of the precipitates, the ion products, and the modified waste petroleum, thereby carrying out a polymerization reaction to produce solid particles; (d) colloidizing a mixture obtained by uniformly stirring the solid particles (e) adding a 10-15% by weight diisocyanate compound to a 85-90% by weight of the colloidized mixture before reactor cooling of the colloidized mixture, thereby carrying out a subsequent polymerization reaction serially to obtain a powder with a gas; (f) purifying the gas generated in the polymerization reaction in step (e) and discharging the purified gas into the atmosphere; and (g) filling the powder obtained in step (e) into a resin as a filling material and compression molding and reclaiming the filled powder.