本文選題：蒽醌法 + 雙氧水　； 參考：《湘潭大學(xué)》2016年碩士論文

【摘要】：雙氧水作為一種重要的無機(jī)化工原料和精細(xì)化工產(chǎn)品,廣泛應(yīng)用于各個領(lǐng)域。蒽醌法以其相對成熟的工藝成為雙氧水的主要生產(chǎn)方法,但是在其循環(huán)的生產(chǎn)過程中容易產(chǎn)生降解物,它們會引起工作液中物性的改變,使得工作液的黏度增加,表面張力下降,有效成分損耗以及系統(tǒng)阻力的增加,會對生產(chǎn)造成較大影響,最終導(dǎo)致產(chǎn)品質(zhì)量下降。目前,國內(nèi)大多數(shù)廠家采用氧化鋁料球作為再生劑,將工作液中的降解物轉(zhuǎn)化為有效蒽醌,穩(wěn)定系統(tǒng)阻力,使整個工藝得到穩(wěn)定運(yùn)轉(zhuǎn),但隨著雙氧水的應(yīng)用領(lǐng)域不斷開拓,對雙氧水產(chǎn)品的品質(zhì)提出了越來越高的要求,特別是現(xiàn)有再生劑的使用壽命不長,再生效果易受操作條件波動的影響等。因此,制備出穩(wěn)定性好,再生活性理想的新型再生劑具有十分重要的意義。本文首先提出了一種新型雙氧水工作液再生劑的研制方法。該方法通過選取活性氧化鋁、二氧化硅、氧化鎂、氧化鋅、二氧化鋯、二氧化鈦六種氧化物,對其進(jìn)行兩兩組合,得到=15種不同組合,每種組合按照80:20、70:30、50:50、30:70、20:80的比例,制備了75種再生劑,制得的再生劑與雙氧水工作液進(jìn)行接觸再生后,借助正相高效液相色譜分析測定工作液中有效蒽醌的含量變化。最終得出以Al_2O_3-MgO組合的再生劑再生性能最佳,采用該組合再生劑可使得工作液中有效蒽醌的含量增加1.86%~3.17%,而采用工廠氧化鋁料球使有效蒽醌的含量增加1.06%,較傳統(tǒng)工業(yè)使用的工廠氧化鋁料球,工作液中的有效蒽醌增加0.80%~2.12%。其中以Al_2O_3-MgO=50:50組合的再生劑再生活性最高,使用其再生后的雙氧水工作液中的有效蒽醌增加了3.17%。同時該再生劑具有良好的穩(wěn)定性,在工作液中不易粉化,通過比較再生后工作液中有效蒽醌的相對含量得出,相較于工廠氧化鋁料球該再生劑并未對雙氧水工作液中有效蒽醌造成太多吸附。在該組合再生劑中,所采用活性氧化鋁為g-Al_2O_3,屬于立方晶系,氧化鎂也屬于立方晶系。通過查閱文獻(xiàn)資料,對再生劑中的g-Al_2O_3以及MgO對工作液中有效蒽醌的再生機(jī)理進(jìn)行了初步的推測。其次本文根據(jù)雙氧水工作液的氫化降解和氧化降解機(jī)理以及工作液中被鑒定出的降解物,筆者對工作液中有效蒽醌的降解總反應(yīng)作出可能性推測,繪出了有效蒽醌的降解反應(yīng)總圖。
[Abstract]:As an important inorganic chemical raw material and fine chemical product, hydrogen peroxide is widely used in various fields. The anthraquinone process has become the main production method of hydrogen peroxide with its relatively mature technology, but it is easy to produce degrading substances during the production process of its circulation, which will cause the change of the physical properties of the working fluid and increase the viscosity of the working fluid. In addition, the decrease of surface tension, the loss of effective components and the increase of system resistance will have a great influence on the production and eventually lead to the decline in the quality of the products. At present, most of the domestic manufacturers use alumina balls as regenerative agents to convert the degrading substances in the working fluid into effective anthracene quinones to stabilize the system resistance and make the whole process stable running, However, with the continuous development of the application field of hydrogen peroxide, the quality of the hydrogen peroxide product is becoming more and more high, especially the life of the regenerative agent is not long, the regeneration effect is easily affected by the fluctuation of the operating conditions. Therefore, the new regenerative agent, which has good stability and rejuvenation, is of great significance. A new method for the development of a new type of regenerator for hydrogen peroxide working liquid was proposed. By selecting active alumina, silica, Magnesium Oxide, Zinc Oxide, two zirconia and titanium dioxide, six kinds of oxides were combined to obtain different combinations of =15. Each combination was prepared according to the proportion of 80:20,70:30,50:50,30:70,20:80. After the regenerative agent was regenerated from the regenerative agent and the hydrogen peroxide working liquid, the content of the effective anthraquinone in the working liquid was determined by the positive phase high performance liquid chromatography. Finally, it was concluded that the regenerative agent of the Al_2O_3-MgO combined regenerative agent was the best. The combined regenerative agent could increase the content of the effective anthraquinone in the working fluid by 1.86%~3.. 17%, the content of the effective anthraquinone is increased by 1.06% by the factory alumina ball. The effective anthraquinone in the working liquid is increased by 0.80%~2.12%. compared with the traditional industrial aluminum oxide ball. The regenerative activity of the regenerative agent in the Al_2O_3-MgO=50:50 combination is the highest, and the effective anthraquinone in the regenerated hydrogen peroxide working fluid increases 3.17%.. The regenerated agent has good stability and is not easily powdered in the working fluid. By comparing the relative content of the effective anthraquinone in the regenerated working fluid, the regenerated agent does not make too much adsorption of the effective anthraquinone in the hydrogen peroxide working liquid compared to the factory alumina ball. In the regenerative agent, the active alumina is used to be g-Al_2O_3 It belongs to the cubic crystal system and the Magnesium Oxide is also a cubic crystal system. By consulting the documents, the regeneration mechanism of the effective anthraquinones in the regenerative agent is preliminarily speculated. Secondly, this paper is based on the hydrogenated degradation and oxidation degradation mechanism of the hydrogen peroxide working fluid and the degradation products identified in the working liquid, and the Magnesium Oxide is a pen. The possibility of the total reaction of effective anthraquinone degradation in the working fluid was predicted, and the general map of the effective degradation reaction of anthraquinone was drawn.
【學(xué)位授予單位】：湘潭大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TQ123.6

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