基于plc的秸秆发酵制取燃料乙醇设备与控制技术的研究.doc
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基于plc的秸秆发酵制取燃料乙醇设备与控制技术的研究,基于plc的秸秆发酵制取燃料乙醇设备与控制技术的研究 2.77万字自己原创的毕业设计，今年最新的，仅在本站独家提交，大家放心使用摘 要：随着煤、石油、天然气等化石燃料的逐渐枯竭，众多国家越来越重视生物质可再生清洁能源的开发利用，越来越多的国家将燃料乙醇等替代能源作为能源战略的一个主要方向。制取燃料乙醇的主要方法有生物发...
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基于PLC的秸秆发酵制取燃料乙醇设备与控制技术的研究
2.77万字
自己原创的毕业设计，今年最新的，仅在本站独家提交，大家放心使用
Research of Straw Fermentation of Fuel Ethanol Equipment
and Control Technology Based on PLC
Abstract: With the fossil resources is becoming more and more seriously depleted and polluted, more and more countries attach great importance to renewable biomass clean energy around the world. More and more countries put fuel ethanol and other alternative energy sources as one of the main direction of the energy strategy. Fuel ethanol is prepared by chemical synthesis and biological fermentation, the biological method mainly takes starch, molasses, or cellulose as raw material, and to produce ethanol by microbial metabolism. Use of the planet's most abundant renewable resources straw cellulose to produce bio-ethanol has been more nationally attended. Representative cellulose of Straw to produce fuel ethanol has broad prospects for development. It develops fast. But there is no large-scale production by now mainly because of higher production costs and low efficiency. Related production technology is not very mature, and related production equipment is imperfect. So the research to technology of straw cellulose fermentation fuel ethanol and equipment is necessary.
Based on the fermentation of straw cellulose was analyzed, using plant straw as the research object, the fermentation process, using the enzymatic hydrolysis andsimultaneous saccharification and fermentation, distillation, process of producingfuel ethanol purification. In this process, established the mathematical model of biomass concentration, using T-S fuzzy predictive control algorithm to optimize the control of cell concentration in fermentation process, completed based onKingview as upper machine and Siemens S7-200 PLC for the design of control system of fermentation process computer.
Keywords: Simultaneous saccharification and fermentation, T-S fuzzy predictive controller,
S7-200 PLC, Kingview
目 录
第一章 绪 论 ...1
1.1 燃料乙醇的概述 ..............................................................................................................1
1.2 燃料乙醇在国内外的发展概况 ........................................................................................1
1.3 本课题的主要研究内容 ....................................................................................................3
1.4 本章小结 ............................................................................................................................4
第二章 秸秆制取燃料乙醇的发酵工艺流程 5
2.1 秸秆发酵的主要发酵工艺 ................................................................................................5
2.1.1 预处理.......................................................................................................................5
2.1.2 水解...........................................................................................................................5
2.1.3 发酵...........................................................................................................................6
2.1.4 脱水...........................................................................................................................7
2.2 秸秆发酵的发酵工艺流程...............................................................................................7
2.3 主要环境因子对发酵过程的影响...................................................................................7
2.3.1 温度对发酵过程的影响...........................................................................................8
2.3.2 pH值对发酵过程的影响..........................................................................................9
2.3.3 溶氧量对发酵过程的影响.............................
2.77万字
自己原创的毕业设计，今年最新的，仅在本站独家提交，大家放心使用
摘 要：随着煤、石油、天然气等化石燃料的逐渐枯竭，众多国家越来越重视生物质可再生清洁能源的开发利用，越来越多的国家将燃料乙醇等替代能源作为能源战略的一个主要方向。制取燃料乙醇的主要方法有生物发酵法和化学合成法，生物发酵法主要以纤维素、淀粉质或糖蜜等为原料，通过微生物代谢产生乙醇。各国越来越重视利用地球上最丰富的可再生资源—秸秆纤维素生产生物乙醇。利用秸秆纤维素生产燃料乙醇具有广阔的发展前景，其发展速度很快，但到目前还没有得到大规模的生产，主要是因为生产成本较高、效率低、相关的生产技术还不是很成熟、相关的生产设备不够完善等，所以研究秸秆纤维素发酵制取燃料乙醇的设备与控制技术很有必要。
在对秸秆纤维素发酵工艺进行分析的基础上，本文以植物秸秆为研究对象，确定了发酵工艺流程，采用纤维素酶水解和同步糖化发酵、蒸馏、提纯的工艺制取燃料乙醇。针对该工艺，本文建立了菌体浓度的数学模型，采用T-S模糊预测控制算法实现对发酵过程中菌体浓度进行优化控制，完成了基于组态王为上位机和西门子S7-200 PLC为下位机的发酵过程控制系统设计。
关键词：同步糖化发酵、 T-S模糊预测控制器、 S7-200 PLC、
Research of Straw Fermentation of Fuel Ethanol Equipment
and Control Technology Based on PLC
Abstract: With the fossil resources is becoming more and more seriously depleted and polluted, more and more countries attach great importance to renewable biomass clean energy around the world. More and more countries put fuel ethanol and other alternative energy sources as one of the main direction of the energy strategy. Fuel ethanol is prepared by chemical synthesis and biological fermentation, the biological method mainly takes starch, molasses, or cellulose as raw material, and to produce ethanol by microbial metabolism. Use of the planet's most abundant renewable resources straw cellulose to produce bio-ethanol has been more nationally attended. Representative cellulose of Straw to produce fuel ethanol has broad prospects for development. It develops fast. But there is no large-scale production by now mainly because of higher production costs and low efficiency. Related production technology is not very mature, and related production equipment is imperfect. So the research to technology of straw cellulose fermentation fuel ethanol and equipment is necessary.
Based on the fermentation of straw cellulose was analyzed, using plant straw as the research object, the fermentation process, using the enzymatic hydrolysis andsimultaneous saccharification and fermentation, distillation, process of producingfuel ethanol purification. In this process, established the mathematical model of biomass concentration, using T-S fuzzy predictive control algorithm to optimize the control of cell concentration in fermentation process, completed based onKingview as upper machine and Siemens S7-200 PLC for the design of control system of fermentation process computer.
Keywords: Simultaneous saccharification and fermentation, T-S fuzzy predictive controller,
S7-200 PLC, Kingview
目 录
第一章 绪 论 ...1
1.1 燃料乙醇的概述 ..............................................................................................................1
1.2 燃料乙醇在国内外的发展概况 ........................................................................................1
1.3 本课题的主要研究内容 ....................................................................................................3
1.4 本章小结 ............................................................................................................................4
第二章 秸秆制取燃料乙醇的发酵工艺流程 5
2.1 秸秆发酵的主要发酵工艺 ................................................................................................5
2.1.1 预处理.......................................................................................................................5
2.1.2 水解...........................................................................................................................5
2.1.3 发酵...........................................................................................................................6
2.1.4 脱水...........................................................................................................................7
2.2 秸秆发酵的发酵工艺流程...............................................................................................7
2.3 主要环境因子对发酵过程的影响...................................................................................7
2.3.1 温度对发酵过程的影响...........................................................................................8
2.3.2 pH值对发酵过程的影响..........................................................................................9
2.3.3 溶氧量对发酵过程的影响.............................
