本文選題：焦化汽油　切入點：焦化柴油　出處：《石油煉制與化工》2017年05期

【摘要】：采用NaOH質(zhì)量分數(shù)20%的液堿對不同產(chǎn)地(或來源)的焦化汽油和焦化柴油進行抽提,得到可提取酸性物,采用氣相色譜-質(zhì)譜聯(lián)用(GC-MS)技術(shù)對可提取酸性物進行分析,結(jié)果表明:焦化汽油中可提取酸性物除苯酚類化合物外,還含有苯硫酚類化合物以及少量小分子硫醚;與焦化汽油不同的是,焦化柴油中的可提取酸性物幾乎全部是苯酚類化合物。不同產(chǎn)地的焦化汽油中苯硫酚質(zhì)量分數(shù)(y)與對應(yīng)的減壓渣油硫質(zhì)量分數(shù)(x)呈線性關(guān)系y=0.04x-0.005 06(R~2=0.999);焦化汽油的苯硫酚類化合物含量越高,其室溫儲存安定性越差;堿洗后的焦化汽油其室溫儲存安定性大幅提高;酚類化合物的來源可能與延遲焦化過程中芳基醚中醚鍵的斷裂以及芳香酸的氧化脫羧等化學(xué)反應(yīng)有關(guān),而苯硫酚類化合物可能來自于苯酚類化合物與H_2S的高溫反應(yīng)。
[Abstract]:The extraction of coking gasoline and coking diesel oil from different producing areas (or sources) was carried out with 20% liquid alkali of NaOH. The extractable acidic compounds were analyzed by gas chromatography-mass spectrometry (GC-MS). The results show that the acid compounds can be extracted from coking gasoline, in addition to phenol compounds, there are also phenylthiophenol compounds and a small amount of small molecular sulfur ether, which is different from coking gasoline. The extractable acidic compounds in coking diesel oil are almost all phenol compounds. There is a linear relationship between the content of phenylthiophenol in coking gasoline from different producing areas and the corresponding sulfur content of vacuum residuum (x); the benzene sulfur of coking gasoline has a linear relationship with that of vacuum residuum. The higher the content of phenolic compounds, The worse the storage stability at room temperature, the greater the storage stability of coking gasoline after alkali washing. The origin of phenolic compounds may be related to the breakage of ether bond in aryl ethers and the oxidation decarboxylation of aromatic acids during delayed coking. The phenythiophenols may be derived from the high temperature reaction of phenol compounds with H _ 2S.
【作者單位】： 遼寧石油化工大學(xué)化學(xué)與材料科學(xué)學(xué)院;
【基金】：國家自然科學(xué)基金資助項目(21171083)
【分類號】：TE626.2

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