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自主设计并搭建了一套超重力反应装置以研究超重力技术在蒽醌法生产双氧水上的应用。实验分别考察蒽醌加氢在超重力单程加氢操作和循环加氢操作下的氢效以及时空收率。实验结果表明在超重力反应系统中,当转速在350~400 r/min时加氢效率最高;在40~60℃,0.1~0.3 MPa的条件下,随温度和压力升高氢效有所提高。同时实验发现在相同反应条件下,循环加氢的操作方法虽然可以得到较高的氢效但同时极大地降低了时空收率。用超重力技术单程加氢的操作方法可以得到的产品时空收率为27.9 g(H_2O_2)/L(cat.)·h,远高于同条件下的采用固定床加氢的产品时空收率(12.7~16.5 g(H_2O_2)/L(cat.)·h)。因此本文认为采用连续的单程加氢的超重力技术在蒽醌法制备双氧水上更具经济性。
Independent design and set up a set of super gravity reaction device to study the application of super gravity technology in anthraquinone production of hydrogen peroxide. The hydrogen abstraction and space-time yield of anthraquinone hydrogenation under one-way hyper-gravity hydrogenation and cyclic hydrogenation were investigated respectively. The experimental results show that the hydrogenation efficiency is the highest when the rotational speed is 350-400 r / min in the super gravity reaction system, and the hydrogen efficiency increases with the increase of temperature and pressure at 40-60 ℃ and 0.1-0.3 MPa . At the same time, it was found that under the same reaction conditions, the operation of cyclic hydrogenation can obtain higher hydrogen efficiency but greatly reduce the space-time yield. The space-time yield of the product obtained by one-way hydrogenation using super gravity technology is 27.9 g H 2 O 2 / L cat. · H, which is much higher than the space-time yield of products using fixed bed hydrogenation under the same conditions 12.7-16.5 g (H 2 O 2) / L (cat.) · H). Therefore, this paper believes that the use of continuous one-way hydrogenation of gravity technology anthraquinone method of hydrogen peroxide more economical.