玉米燃料乙醇低能耗工业生产新工艺  

Low-energy Consumption Technology for Industrial Production of Corn Fuel Ethanol

作　　者：姜新春 区镜深 李凡 周宏才 佟毅 庄新姝[3] JIANG Xinchun;OU Jingshen;LI Fan;ZHOU Hongcai;TONG Yi;ZHUANG Xinshu(Guangdong Zhongke Tianyuan New Energy S&T Co., Ltd.,Guangdong Province Biological Liquid Fuel(Zhongke Tianyuan) Engineering and Technology Research Center,Guangzhou 510640,China;COFCO(Jinlin) Bio-chemical Technology Co., Ltd.(National Engineering Research Center for Corn Deep Processing),Changchun 130000,China;Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,CAS Key Laboratory of Renewable Energy,Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640,China)

机构地区：[1]广东中科天元新能源科技有限公司,广东省生物液体燃料(中科天元)工程技术研究中心,广东广州510640 [2]吉林中粮生化有限公司(玉米深加工国家工程研究中心),吉林长春130000 [3]中国科学院广州能源研究所,中国科学院可再生能源重点实验室,广东省新能源和可再生能源研究开发与应用重点实验室,广东广州510640

出　　处：《生物质化学工程》2021年第4期7-13,共7页Biomass Chemical Engineering

基　　金：广东省应用型科技研发专项资金资助项目(2015B020241001);广东省自然科学基金重点项目(2015A030311022)。

摘　　要：本团队研发的玉米燃料乙醇低能耗生产新工艺,采用了低温液化、浓醪同步糖化间歇发酵、三塔压差精馏与分子筛脱水工艺和全厂各工段的废热进行余热回收技术,目前已经成功应用于多家燃料乙醇生产企业。以黑龙江鸿展生物科技股份有限公司已经投产的30万吨级燃料乙醇工程项目为例,对比分析了新工艺与传统工艺在技术特点、能耗、产品质量等方面的差异。结果表明:与传统工艺相比,新工艺蒸汽消耗降低10.26%,工艺用水量节约28.09%,循环水用量减少11.11%,每生产一吨燃料乙醇折合可节约标准煤49 kg,每年可以为企业节约标准煤14700吨,节省燃料乙醇能耗成本约800万元;同时燃料乙醇和玉米酒糟(DDGS)的产品质量均符合国家标准,部分指标高于国家标准,如乙醇纯度达99.9%,甲醇低至0.01%,DDGS中粗蛋白质为26.1%,粗脂肪为10.5%,粗纤维为8.7%。The new low-energy consumption process of corn fuel ethanol developed by our team adopted low temperature liquefaction,synchronous saccharification and batch fermentation of concentrated mash,three-tower differential pressure distillation and molecular sieve dehydration process and waste heat recovery technology from various sections of the plant.At present,it has successfully applied to a number of fuel ethanol distillery.Taking the Heilongjiang Hongzhan Science and Technology Co.,Ltd.300000-ton fuel ethanol project as an example,the technical characteristics,energy consumption and product quality were compared and analyzed between the new and the traditional process.The results showed that the steam consumption,process water and amount of circulating water of the new process were reduced by 10.26%,28.09%and 11.11%compared with those of traditional process,respectively.The production of 1 ton fuel ethanol could save 49 kg standard coal;thus 14700 tons of standard coal could be saved annually and the energy consumption cost of fuel ethanol could be saved by about 8 million Yuan.At the same time,the product qualities of fuel ethanol and corn distiller's grains(DDGS)were in line with the national standards,some indicators were higher than the national standards,such as the purity of ethanol could reach 99.9%,methanol content was as low as 0.01%,crude protein content was 26.1%,crude fat content was 10.5%and the crude fiber content was 8.7%.

关 键 词：玉米 燃料乙醇 玉米酒糟 低能耗 工业生产 新工艺 

分 类 号：TQ35[化学工程] TS262.2[轻工技术与工程—发酵工程]