Finally, two short-path distillation processes and one falling film evaporator are applied in the regeneration of waste lubricating oil. In the test, the diesel oil, gasoline and lubricating oil are distilled respectively, while the gelatinoid materials, asphaltene and carbon residue remain in the draft. The regenerative lubricating oil accords with the standards of base oil. And the recovery efficiency is up to 75 percent. The technology used in the test doesnt comprise processes like pickling and alkali neutralization, which would cause secondary pollution like acid draff and sulfur dioxide and so on. As a result of this, our technology is friendly to the environment.

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Under the characteristics of the raw materials of slag made of ilmenite in our country, we use sulfuric acid to produce titanium dioxide in this design, use orthogonal test analysis to investigate the acid soluble condition and make analytical discussion about the influencing factors of sulfuric acid rate.

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To project of this one innovation, taiyuan manage is versed in university president Xie Kechang thinks, the extractive distill method that this suit buy uses and photograph of traditional vitriolic and purificatory craft are compared, without eduction of waste liquid of acerbity broken bits, technological process is simple, investment cost is low, and can reclaim the acridine thiophene that uses high additional cost, it is an environment friendly model project of green chemical industry.

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The particle has been made by use of the leaching residue ,savageness and kaolin as raw materials. The mass quality proportions are as follow: the leaching residue is 66%, kaolin is 21%,vermiculite is 13%.

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The company mainly engaged in a number of products have the following series: 1, highly efficient environment-friendly metal surface treatment series: stainless steel pickling passivation cream, stainless steel pickling passivation fluid, stainless steel pickling passivation head hot paste, ultra-low carbon steel acid Passivation wash cream, stainless steel high-performance cleaning fluid, stainless steel passivation fluid, carbon steel pickling paste, pickling paste titanium, stainless steel brightener washing, descaling Wang, copper surface detergent cleaning agent, electric stainless steel polishing fluid, anti - welding slag splashing paint, universal cleaning agent, senior metals rust oil, phosphating solution, degreasing agents, rust-proof paper, waterproof moisture-proof wrapping paper series.

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The process of three-step countercurrentleaching is presented, in the first leaching step Fe as leading impurity inthe matte is leached priorly, Co and Ni are enriched in the residue of thefirst step and then are leached in the second leaching step with a lowconcentration acid, the residue from the second step containing hardleaching Fe, Co and Ni are leached with a high concentration sulfuricacid in the third step, and Cu stays in the final resude, the leachate of thethird leaching step is diluted and divided into two parts as the leachantsto the first and second leaching step.

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In order to prevent the acid sludge forming during acidizing treatment for Putaohua formation in Daqing peripheral oilfield, the research on colloid and bitumen in oil, acid system, ferric ion and anti -sludge agent has been carried out to determine the possibility of sludge forming.

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The functions of acetic acid in the acid treatment of sand stones are systematically analyzed in several aspects such as retardation,stability of ferric ions,corrosion inhibition,acid sludge resistence and buffering property etc.

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Acid-dreg was neutralized with waste alkali. The waste water was treated using the cationic flocculant.

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