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[求助]
麻煩各位前輩幫我翻譯下畢業(yè)論文�。。�
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摘 要 對二甲苯（PX）是苯的衍生物，是一種無色透明、氣味芬芳的液態(tài)芳烴化合物，PX用于合成對苯二甲酸（PTA）、對苯二甲酸二甲酯（DMT）以及對苯二甲酸乙二醇酯（PET），進而生產(chǎn)塑料、聚酯纖維和薄膜等。石油、天然氣、煤、生物質(zhì)資源是生產(chǎn)PX的主要來源。 本文以甲醇、甲苯、水、氫氣為原料生產(chǎn)對二甲苯，以Aspen plus為模擬工具，對甲苯甲醇烷基化制取對二甲苯的工藝流程進行分工段模擬，未反應完的甲苯和氫氣回收作為原料再利用，達到了清潔生產(chǎn)。 利用模擬所得的數(shù)據(jù)對換熱器及精餾塔進行了詳細設計，并選取了適宜的換熱器及精餾塔，利用智能選泵軟件選取了符合要求的泵，同時對其它各設備進行了初步設計與選型。 關鍵詞：對二甲苯；Aspen plus；工藝流程；設計 |
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3樓2015-03-16 20:24:42
【答案】應助回帖
★
愛與雨下: 金幣+1 2015-03-16 17:47:32
愛與雨下: 金幣+1 2015-03-16 17:47:32
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Abstract: As we know, PX, one kind of the Benzene derivatives. is a colorless and transparent 、 fragrant liquid of aromatic compounds. It is applied to Synthesize erephthalic acid (PTA), dimethyl terephthalate (DMT) and ethylene terephthalate (PET), then producing Plastic, polyester fibers and films, etc.The main sources to produce PX contain oil, gas, coal, biomass resources. On this thesis we produce paraxylene by using methanol, toluene, water, and hydrogen as raw materials. and using Aspen plus as a simulative tool which is applied to simulate the process, in that alkylation of toluene with methanol to prepare paraxylene in sections.明天再給你翻譯全部吧，今天要下班了，到時候再看著給分吧,貌似有些翻譯還有些不恰當 |
2樓2015-03-16 16:55:53
【答案】應助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★
北城相擁(phu_grassman代發(fā)): 金幣+10, good. 2015-03-17 16:26:32
北城相擁(phu_grassman代發(fā)): 金幣+10, good. 2015-03-17 16:26:32
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Abstract: As we know, PX, one kind of the Benzene derivatives. is a colorless and transparent、fragrant liquid of aromatic compounds. It is applied to Synthesize erephthalic acid (PTA), dimethyl terephthalate (DMT) and ethylene terephthalate (PET), then producing Plastic, polyester fibers and films, etc.The mainly sources to produce PX contain oil, gas, coal, biomass resources. On this thesis we make paraxylene from methanol, toluene, water, and hydrogen. and using Aspen plus as a simulative tool to simulate the process, in which Alkylating toluene with methanol to prepare paraxylene in sections. Recycling unreacted toluene and hydrogen as a raw material to achieve cleaner production. Making use of the data obtained form simulation to design heat exchangers and distillation columns in detail, then choose the suitable heat exchanger and distillation column.Using intelligent pump selection software to select the right pump, choosing and designing other equipment for the preliminary use. Key words: paraxylene;Aspen plus:progress:design.翻譯好了，昨天翻譯太急了，現(xiàn)在應該差不多了 |
4樓2015-03-17 11:19:53
5樓2015-03-19 21:51:03
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