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[求助]
麻烦各位前辈帮我翻译下毕业论文！！！
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摘 要 对二甲苯（PX）是苯的衍生物，是一种无色透明、气味芬芳的液态芳烃化合物，PX用于合成对苯二甲酸（PTA）、对苯二甲酸二甲酯（DMT）以及对苯二甲酸乙二醇酯（PET），进而生产塑料、聚酯纤维和薄膜等。石油、天然气、煤、生物质资源是生产PX的主要来源。 本文以甲醇、甲苯、水、氢气为原料生产对二甲苯，以Aspen plus为模拟工具，对甲苯甲醇烷基化制取对二甲苯的工艺流程进行分工段模拟，未反应完的甲苯和氢气回收作为原料再利用，达到了清洁生产。 利用模拟所得的数据对换热器及精馏塔进行了详细设计，并选取了适宜的换热器及精馏塔，利用智能选泵软件选取了符合要求的泵，同时对其它各设备进行了初步设计与选型。 关键词：对二甲苯；Aspen plus；工艺流程；设计 |
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【答案】应助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★
北城相拥(phu_grassman代发): 金币+10, good. 2015-03-17 16:26:32
北城相拥(phu_grassman代发): 金币+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.翻译好了，昨天翻译太急了，现在应该差不多了 |
4楼2015-03-17 11:19:53
【答案】应助回帖
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爱与雨下: 金币+1 2015-03-16 17:47:32
爱与雨下: 金币+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.明天再给你翻译全部吧，今天要下班了，到时候再看着给分吧,貌似有些翻译还有些不恰当 |
2楼2015-03-16 16:55:53
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ok |
3楼2015-03-16 20:24:42
5楼2015-03-19 21:51:03
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