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alive. lesson68 persistent 纠缠不休i crossed the street to avoid meeting him, but he saw me and came running towards me. it was no use pretending that i had not seen him, so i waved to him. i never enjoy meeting bert dykes. he never has anything to do. no matter how busy you are, he always insists on coming with you. i had to think of a way of preventing him from following me around all morning.hullo, bert, i said. fancy meeting you here !hullo, elizabeth, bert answered. i was just wondering how to spend the morning-until i saw you. youre not busy doing anything, are you ? no, not at all, i answered. im going to. .would you mind my coming with you ? he asked, before i had finished speaking. not at all, i lied, but im going to the dentist. then ill come with you, he answered. theres always plenty to read in the waiting room !lesson69 but not murder! 并非谋杀!i was being tested for a driving licence for the third time. i had been asked to drive in heavy traffic and had done so successfully. after having been instructed to drive out of town, i began to acquire confidence. sure that i had passed, i was almost beginning to enjoy my test. the examiner must have been pleased with my performance, for he smiled and said, just one more thing, mr eames. let us suppose that a child suddenly crosses the road in front of you. as soon as i tap on the window, i want the car to be stopped immediately. i continued driving and after some time, the examiner tapped loudly. though the sound could be heard clearly, it took me a long time to react. i suddenly pressed the brake pedal hard and we were both thrown forward. the examiner looked at me sadly. mr eames, he said, in a mournful voice, you have just killed that child ! lesson70 red for danger 危险的红色during a bullfight, a drunk suddenly wandered into the middle of the ring. the crowd began to shout, but the drunk was unaware of the danger. the bull was busy with the matador at the time, but it suddenly caught sight of the drunk who was shouting rude remarks and waving a red cap. apparently sensitive to criticism, the bull forgot all about the matador and charged at the drunk. the crowd suddenly grew quiet. the drunk, however, seemed quite sure of himself. when the bull got close to him, he clumsily stepped aside to let it pass. the crowd broke into cheers and the drunk bowed. by this time, however, three men had come into the ring and they quickly dragged the drunk to safety. even the bull seemed to feel sorry for him, for it looked on sympathetically until the drunk was out of the way before once more turning its attention to the matador.lesson71 a famous clock 一个著名的大钟when you visit london, one of the first things you will see is big ben, the famous clock which can be heard all over the world on the b.b.c. if the houses of parliament had hot been burned down in 1834, the great clock would never have been erected. big ben takes its name from sir benjamin hall who was responsible for the making of the clock when the new houses of parliament were being built. it is not only of immense size, but is extremely accurate as well. officials from greenwich observatory have the clock checked twice a day. on the b.b.c. you can hear the clock when it is actually striking because microphones are connected to the clock tower. big ben has rarely gone wrong. once, however, it failed to give the correct time. a painter who had been working on the tower hung a pot of paint on one of the hands and slowed it down ! lesson72 a car called bluebird “蓝鸟”汽车the great racing driver, sir malcolm campbell, was the first man to drive at over 300 miles per hour. he set up a new world record in september 1935 at bonneville salt flats, utah. bluebird, the car he was driving, had been specially built for him. it was over 30 feet in length and had a 2500 horse-power engine. although campbell reached a speed of over 304 miles per hour, he had great difficulty in controlling the car because a tyre burst during the first run. after his attempt, campbell was disappointed to learn that his average speed had been 299 miles per hour. however, a few days later, he was told that a mistake had been made. his average speed had been 301 miles per hour. since that time, racing drivers have reached speeds of over 400 miles an hour. following his fathers footsteps many years later, sir malcolms son, donald, also set up a world record. like his father, he was driving a car called bluebird.lesson73 the record-holder 纪录保持者little boys who play truant from school are unimaginative. a quiet days fishing, or eight hours in a cinema seeing the same film over and over again, is usually as far as they get. they have all been put to shame by a boy who, while playing truant, travelled 1600 miles. he hitch- hiked to dover and, towards evening, went into a boat to find somewhere to sleep. when he woke up next morning, he discovered that the boat had, in the meantime, travelled to calais. no one noticed the boy as he crept off. from there, he hitch-hiked to paris in a lorry. the driver gave him a few biscuits and a cup of coffee and left him just outside the city. the next car the boy stopped did not take him into the centre of paris as he hoped it would, but to perpignan on the french-spanish border. there he was picked up by a policeman and sent back to england by the local authorities. he has surely set up a record for the thousands of boys who dream of evading school.lesson74 out of the limelight 舞台之外an ancient bus stopped by a dry river bed and a party of famous actors and actresses got off. dressed in dark glasses and old clothes, they had taken special precautions so that no one should recognize them. but as they soon discovered, disguises can sometimes be too perfect.this is a wonderful place for a picnic, said gloria gleam. it couldnt be better, gloria, brinksley meers agreed. no newspaper men, no film fans! why dont we come more often ? meanwhile, two other actors, rockwall slinger and merlin greeves, had carried two large food baskets to a shady spot under some trees. when they had all made themselves comfortable, a stranger appeared. he looked very angry. now you gut out of here, all of you! he shouted: im sheriff here. do you see that notice ? it says no camping-in case you cant read ! look, sheriff, said rockwall, dont be too hard on us. im rockwall slinger and this is merlin greeves. oh, is it ? said the sheriff with a sneer. well, im brinksley meers, and my other name is gloria gleam. now you get out of here fast !lesson75 sos 呼救信号when a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was killed. the only passengers, a young woman and her two baby daughters, were unhurt. it was the middle of winter. snow lay thick on the ground. the woman knew that the nearest village was miles away. when it grew dark. she turned a suitcase into a bed and put the children inside it, covering them with all the clothes she could find. during the night, it got terribly cold. the woman kept as near as she could to the children and even tried to get into the case herself, but it was too small. early ,next morning she heard planes passing overhead and wondered how she could send a signal. then she had an idea. she stamped out the letters sos in the snow. fortunately, a pilot saw the signal and sent a message by radio to the nearest town. it was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash.lesson76 april fools day 愚人节to end our special news bulletin, said the voice of the television announcer, we are taking you to the macaroni fields of calabria. macaroni has been grown in this area for over six hundred years. two of the leading growers, giuseppe moldova and ricardo brabante, tell me that they have been expecting a splendid crop this year and harvesting has begun earlier than usual. here you can see two workers who, between them, have just finished cutting three cart-loads of golden brownmacaroni stalks. the whole village has been working day and night gathering and threshing this years crop before the september rains. on the right, you can see mrs brabante herself. she has been helping her husband for thirty years now. mrs brabante is talking to the manager of the local factory where the crop is processed. this last scene shows you what will happen at the end of the harvest : the famous calabrian macaroni-eating competition ! signor fratelli, the present champion, has won it every year since 1961. and that ends our special bulletin for today, thursday, april 1st. we are now returning you to the studio.lesson77 a successful operation 一例成功的手术the mummy of an egyptian woman who died in 800 b.c. has just had an operation. the mummy is that of shepenmut who was once a singer in the temple of thebes. as there were strange marks on the x-ray plates taken of the mummy, doctors have been trying to find out whether the woman died of a rare disease. the only way to do this was to operate. the operation, which lasted for over four hours, proved to be very difficult because of the hard resin which covered the skin. the doctors removed a section of the mummy and sent it to a laboratory. they also found something which the x-ray of the god duamutef. this god which has the head of a cow was normally placedinside a mummy. the doctors have not yet decided how the woman died. they feared that the mummy would fall to pieces when they cut it open, but fortunately this has not happened. the mummy successfully survived the operation. lesson78 the last one? 最后一枝吗?after reading an article entitled cigarette smoking and your health i lit a cigarette to calm my nerves. i smoked with concentration and pleasure as i was sure that this would be my last cigarette. for a whole week i did not smoke at all and during this time, my wife suffered terribly. i had all the usual symptoms of someone giving up smoking: a bad temper and an enormous appetite. my friends kept on offering me cigarettes and cigars. they made no effort to hide their amusement whenever i produced a packet of sweets from my pocket. after seven days of this i went to a party. everybody around me was smoking and i felt extremely uncomfortable. when my old friend brian urged me to accept a cigarette, it was more than i could bear. i took one guiltily, lit it and大豆油脂厂可行性研究报告 2012年4月一、总论1、研究工作的目的、依据和范围 可行性研究是以大量资料和数据为基础,对各项调查研究材料进行技术经济分析、比较后得出可行性研究结论,用以避免建设项目决策失误,提高项目投资综合效益。 根据项目建议书和工程合同,本报告将对建设项目的产品市场需求预测及建设规模及产品方案的确定,工程技术、环境保护、综合利用既节约资源、企业组织、劳动定员、项目实施进度,投资估算、资金筹措、安全技术、“三废”治理、经济效益和社会效益进行全面分析,并在此基础上提出技术上可靠、经济上合理、符合食品工业需求的方案。2、项目名称:年产5000t大豆油脂厂3、拟建地点:合肥市技术经济开发区4、项目提出的背景、投资的必要性和经济性 油料作物是我国植物油脂和蛋白质的重要来源。油料作物生产不仅在国民经济和社会发展中占有重要地位,也是我国农业可持续发展的主要因素之一。我国是一个农业大国,但是由于人口持续增长以及种植业内部结构不合理等因素,我国植物油脂人均占有量不到世界平均水平的70%,与发达国家的差距更大,每年需要大量进口油脂原料或产品,进口总量居世界首位,油脂供给已经成为影响我国食物安全和农村经济发展的重要因素。为适应国内油料市场的变化,随着国内、国外油脂工业以规模效益为显著特征的发展趋势及国内豆粕、食用油紧缺的现状,拟在安徽省合肥市经济开发区兴建年产5000吨植物油脂加工企业。 将厂址设于安徽省合肥市经济开发区主要存在以下优势。首先,原料供应方便。安徽省是全国重要的油料主产省,油料面积和产量均居全国第三位。油料作物是安徽省的主要农作物,也是优势作物和潜力巨大作物。全省油料作物面积147多万公顷,芝麻、花生、菜籽、大豆等农作物产量丰富,均居全国首位。并且,周边的河南省、山东省以及江苏等也是农业大省,因此,厂址设于合肥可以保证原料的供应量,并且由于交通运输方便可以大大节约成本。 植物油是每家每户的生活必需品,随着我国人口的增长和人民生活水平的不断提高,食用植物油脂的消费量越来越大,特别是进入九十年代以来,对食用油脂的质量也提出了更高的要求,食用植物油与人体健康的关系也普遍受到了人们的关注,对高级烹调油、一级油的需求越来越大。按照国务院批准的九十年代中国应达到1040万吨,年人均消费食用植物油将达到8公斤按照八届人大第2010年远景目标纲要要求,我国年食用植物油需求总量将达到1120万吨,人均约9公斤,而目前我国人均消费仅7公斤。与此同时,随着行业用煎炸油、起酥油、人造奶油等食品专用油脂需求的逐年增加,精炼植物油及其制品有着非常广阔的发展前景。5、合肥经济技术开发区的总体税收环境与中国的税收政策相一致。此外,开发区还提供其他地方性的优惠政策。1) 、开发区的工业投资项目可免征37项行政事业性收费项目,包括企业注册登记费、土地登记费、房屋产权登记费等。2) 合肥市设有“加快工业发展专项基金”。在本市区域内注册、生产的工业企业,不分所有制及隶属关系,均属专项基金支持范围。3) 合肥市还设有“合肥市工业性固定资产投资项目库”对于列入此项目库的项目,在开发区的企业还享有一系列特殊优惠政策。a、总投资额在1000万人民币以上的项目,依据具体投资额大小,政府按照实际支付的项目前期费用,例如项目可行性研究报告和环境评价报告等的50%-100%给予补助,但最高不超过200万人民币。b、新开工的、总投资在1000万人民币至一亿人民币的固定资产投资项目,在项目建设期内,政府按申报期新增的固定资产实际投资额的5%给于一次性补助。补助范围为项目土地使用权、厂房、设备和辅助设施等;补助时间从项目开始建设是计算,最长不超过两年。c、新开工的、总投资在5000万人民币以上的新建工业项目,五年内企业所缴纳的所得税地方留成部分奖励给企业。d、新开工的、总投资额在一亿人民币以上或经济带动力强、科技含量高的新建工业项目,以及跨国、跨省、跨市工业企业将总部、生产基地以及研发中心入驻合肥市的项目,可采取“一企一议”、“一事一议”的办法,给于政策支持。e、经当地科技行政主管部门认定为高新技术产品的,从认定之日起,该产品三年内上交的新增增值税地方留成部分按50%的比例奖金给企业,用于企业技术研发投入。f、对经营期在10年以上,符合以下条件之一的,经市政府批准,在土地使用、地方奖励等方面给予特别扶持,实行一事一议:安排本市就业人数1000人以上;投资次年纳税总额(不含关税和海关环节代征的其它各项税收)1000万元以上;对促进合肥市经济结构调整具有牵动作用的重大项目。 g、到开发区和工业园区投资工业项目,对合肥市规定的行政性收费实行零费率,经营性收费减半收取。4)、设立合肥市促进工业投资专项资金,对投资支柱产业和重点工业项目的,在项目前期费用补助、贷款贴息、配套补助、支柱产业配套奖励等方面,给予政策支持。a、对合肥市汽车及工程机械、家用电器、化工及新型建材三大支柱产业中的主导企业从市外引进的配套企业以及扶持的本地企业,3年内,按配套企业每年新增的增值税地方留成部分以及随征的地方税收入数,70奖励给主导企业,30奖励给配套企业。配套企业的奖励资金,企业所在区按地方税区级分享比例承担。b、投资工业项目的,按到位设备的实际价格,给予企业补贴810%。c、投资合肥市新产品(指国家级新产品、安徽省高新技术产品和火炬计划项目产品)的,在所得税地方留成、增值税地方留成等方面给予扶持;投资高新开发区内经认定的高新技术企业的,在所得税率、中试设备折旧等方面给予扶持。1.3研究工作概况及结论 本项目选址安徽省合肥市经济开发区,具有得天独厚的地理优势,地势平坦,公路和铁路运输畅通,交通便捷。今年来合肥市每年新增劳动力资源为开发区提供数量可观的劳动力,劳动成本较低。作为全国著名的科教基地之一,合肥共有59所大学,28所技术学校,知名大学有中国科技大学、合肥工业大学、安徽大学等,聚集较多高素质人才。基础设施完善,土地成本、厂房建设成本、劳动力成本及运营成本较低,效益高,适于投资建厂。 本项目建成后,年总运输量达10500吨,其中:原料运进5000吨,辅助材料等500吨,成品油运出5000吨,平均日吞量为30吨,这将极大地带动合肥市运输服务业的繁荣,并且提供大量劳动岗位促进就业,为振兴合肥经济起较大的促进作用。 本项目投产后,在与国内外同行业的竞争中会立于不败之地,前景广阔,具有较好的经济效益和社会效益,本项目是可行的。 二、市场需求预测及拟建规模 进入90年代,全国各地陆续投产了一些较大型油脂加工厂,但到目前为止,真正建成投产的日加工能力在1000吨以上的厂不过十几家,其产量与需求还有很大差距。目前市场对油脂、豆粕的需求量很大,而内陆的一些油脂加工厂由于受运输、生产规模条件的制约,无法满足市场的需求,我公司根据这一实际情况,顺应市场形势,参与规模化、国际化的市场竞争,前景非常乐观。以下是对近几年植物油加工行业的需求预测以及利润预测。 1、2010-2015年食用植物油加工行业的需求预测 2、2010-2015年食用植物油脂加工行业利润总额预测3、拟建规模本项目采用国内最先进的工艺技术,选择最先进的生产设备,在产品投产时,就高标准、严要求为创名牌,打入国际市场创造一个良好的条件。 根据生产的需要,拟建的各工程生产规模确定如下(按5000t/年大豆配置):原料接收、工作塔:15t/d;预处理车间:15t/d;浸出车间:15t/d;炼油车间:(脱胶、碱炼):30 t/d; 主要产品:大豆油、大豆粕;全年生产日:330天,年处理大豆为5000吨,年产豆粕4000吨;精炼油:1250吨。三、资源、原材料、燃料及共用设施的情况 1、原料供应油脂加工的主要原料为大豆、菜籽,安徽省是一个农业大省,大豆平均年产100万吨,菜籽年产量约为150万吨,周边的河南、江苏、山东等省油料产量丰富,原料供应充足。运输方便或者短途运输即可满足需要量,成本降低。 2、辅助材料 本项目辅助材料主要是磷酸、烧碱、六号溶剂等,市场供应充足,可满足项目投产后的需要。 3、燃料供应 本项目投资后,燃料拟选用燃煤,预计全年耗燃煤150吨,可由市场采购解决。(可部分使用天然气或者蒸汽替代,蒸汽价格:180-220元/吨,其中含损耗及税金,天然气价格为2.48元/立方米,工业用气价格可适当降低) 4、水电供应该项目建成后,需总动力约40kw(含备用设备),经济开发区电力资源丰富,电力可满足项目建成后的需求。项目建成后,每日约需生产用水10吨,其中主要水负荷浸出车间和炼油车间,在设计中采用循环供水系统,以节约用水。四、建厂条件和厂址方案 安徽省是一个土地肥沃,人口密集的内陆省份。长江,中国最长的河流,自西向东贯穿安徽省南部。安徽省是中国东西部的桥梁和中国政府“中部崛起”经济发展战略中的重要省份之一。安徽省的省会是合肥,合肥,作为长江三角洲经济区的重要城市之一,起着承接长江三角经济区经济辐射和产业转移的作用。以合肥为中心的500公里半径的范围之内的各省市,共拥有中国近一半的国民生产总值和超过40%的消费市场。合肥市地处亚热带气候区,是一座全国文明的“绿色之城”合肥市四季分明,年平均气温为15.5摄氏度左右,降雨量近1000毫米,平均日照为每天5.8小时。合肥市是由住房和城市建设部批准的全国首批“园林城市”之一,2008年合肥市的绿化覆盖率达到41.5%,人均绿化面积为11.4平方米,超过同期全国城市平均绿化覆盖率水平。并且,合肥是一座拥有2000多年历史的古城,合肥古城庐州,最早起源于秦朝时期设立的合肥县。基础设施的完善与否和运营成本的高低,是进行建厂或者办公室选址时所需要考虑的关键因素之一。合肥经济技术开发区拥有良好的基础设施,可以满足投资建厂的需求。开发区与国家高速公路网直接相连,道路交通便利。合肥周边有多条高等级公路经过开发区,主要包括206国道,312国道,合-徐高速公路,合-铜-黄高速公路,沪蓉高速公路等等;开发区联通贯穿全国五大铁路干线,铁路运输十分发达;开发区距中国东部三个港口均在六小时车程之内。开发区根据国家规定的工业用地出让价标准提供用地,实际成交价格需要投资商与开发区协商确定。与其他开发区相比,在合肥经济开发区建造厂房的成本相对较低。在开发区土地承载能力较好,土地承载能力达到25-30吨,适用于建设高荷承载重厂房。按层高8至15米计算,一般单层轻钢结构厂房参考建设成本为每平方米700-800人民币。合肥周围有一些湖泊和水库,为开发区提供了稳定的水源供应。开发区北侧有一座自来水厂,水源来自附近拥有2.3亿立方米总库容量铺水库,目前该自来水厂每日供水量为50万吨。开发区供电能够满足开发区内企业使用需要,并逐步提高供热能力。开发区现有500kv变电站一座、220kv变电站三座、110kv变电站六座,总供电容量90万kva。开发区使用来自中国西部能源产地输送的管道天然气。开发区的公用设施网络覆盖全区。各类管道线路均铺设至地块边缘,保证入区项目快速获得水电气等公用设施供应。与其他开发区相比,合肥开发区电价和工业用水价格适中。合肥市地处亚热带气候区,是一座全国文明的“绿色之城”合肥市四季分明,年平均气温为15.5摄氏度左右,降雨量近1000毫米,平均日照为每天5.8小时。合肥市是由住房和城市建设部批准的全国首批“园林城市”之一,2008年合肥市的绿化覆盖率达到41.5%,人均绿化面积为11.4平方米,超过同期全国城市平均绿化覆盖率水平。环境适宜较好,适宜工作和生活。5、 设计方案 植物油加工工艺:原料挑选清理暂存 破碎软化轧胚蒸炒浸出湿粕烘干成品粕 湿合油蒸发汽提浸出毛油去精炼1、初清车间及立筒仓1)规模及原料 本工段为每天24小时工作,投料量为1.4t/h也可根据来料和仓储情况进行调节,筒仓采用钢结构仓,储料量按450吨设计,每仓150吨,共3个,采用单排布置,便于物料的输送。原料:国产大豆以国家标准(g b 8611-88)作为设计计算依据。进口大豆以美国二号大豆作为设计计算依据。2)产品方案:本车间产品为除去粗杂的大豆。主要技术经济指标,本工段生产过程不需要水和蒸气、电耗为1.32kwt/h料。3)工艺流程说明:原料由汽车或运输机械送至卸粮处投料,经刮板输送入斗升机,提升后再经刮板机输送机送入初清筛除杂。除去粗杂的原料经刮板输送机和斗升机提升后,分别送入3个立筒仓贮存。2、预处理车间 本车间采用连续生产方式,主要用于大豆的预处理,考虑目前采购原料中土杂较多和现代工业的环保要求,在本工段配有较强能力的除尘系统,以满足生产的需要。1)规模:能力为处理大豆30吨,全年生产天数为330天,每年可处理大豆1000吨2)产品方案:本车间生产半成品大豆坯,含水10%,坯片厚0.3mm。3)主要技术经济指标:水耗:l0kg/t大豆;电耗:14.lkm/t大豆;汽耗:80kg/t大豆。4)工艺流程说明:由输送设备送入车间的大豆经计量后自流入暂存箱。然后经提升流入清理筛,在此清理出大、小杂质及灰杂,再去除铁杂,经去石机去石得到初清后的大豆。 大豆初清后落入破碎机将大豆破碎成四至八瓣,然后经斗升机提升送入软化机进行软化,而后轧坯,坯片由刮板输送机和提升机送至浸出车间。 3、浸出车间本车间采用负压蒸发,二次蒸汽利用新工艺,主要用于大豆的油脂浸出,也可用于其它一些油料的浸出,该车间的中间产品为浸出毛油和浸出豆粕。1)、规模及原料:日处理大豆坯30吨,年处理大豆坯10000吨,原料为大豆坯。2)、产品方案:浸出毛油:总挥发物(0.2%;浸出粕残油1.0%,水份12%,残溶700ppm。色泽正常,尿素酶0.05-0.20(ph测定法)。3)、主技术经济指标:水耗:0.6t/t料,30t/t料(循环水量);电耗:室内7.4kwh/t料,室外3.9kwh/t料;汽耗:220kg/t料;溶剂消耗1.2kg/t料。4)工艺流程说明a、浸出工序:经预处理的大豆坯由进料刮板输送机送入浸出器料封绞龙,进入浸出器,物料在浸出器中由进料口到出料口环行一周,经有递减浓度的混合油进行喷淋或浸泡,最后用新鲜溶剂喷淋后,经过一段滴干区被连续地送入湿粕刮板。最浓的混合油由泵打入旋液分离器除杂后进入混合油罐,再由一蒸喂料泵送入第一长管蒸发器。b、浸出湿粕脱溶液工序 浸出器来的含溶湿粕由湿粕刮板经料封绞龙送入dtdc蒸脱机的预脱层,底部用间接蒸汽加热,脱去部份溶剂,经预脱后的湿粕进入蒸脱层,脱去全部溶剂。脱溶粕旋转定阀定量下落到烘干层,进行去水干燥过程,使粕中水份达到要求后进冷却层,使粕温度达到需求后,由粕刮板送入粕库。c、混合油蒸发脱落工序 混合油由一蒸喂料泵从混合油罐打入第一长管蒸发,二蒸发的溶剂经分离室进入真空冷疑器,使一蒸混合油中的溶剂在负压下蒸发。 一蒸浓缩后的混合油,由蒸喂料泵打入第二长管蒸器蒸发,二蒸也为负压蒸发,蒸发的溶剂汽经分离室进入真空冷疑器,混合油达到一定的温度进入汽提塔。混合油从汽提塔顶部进到塔内的碟盘中,一层层降下,同时底部喷入直接蒸汽,脱去残留溶剂。毛油由汽提塔抽出泵从塔抽出再经干燥冷却器冷却后进入毛油箱,再由毛油泵送入炼油车间。4、精炼车间本车间采用连续式生产工艺,主要用于大豆油的精炼,也可用于其它一些油脂的精炼,主要产品为一级食用油。1)规模及原料日处理毛油6吨,若年生产日316天,则年处理量为1800吨,原料为毛油,ffa 3%,杂质0.2%,水份及挥发物0.2%,过氧化值10q。2)产品方案大豆一级食用油,符合国际标准。3)主要技术参数电耗:13.7kwh/t油;蒸汽消耗:平均170kg/t油;水耗:平均0.75t/t油。辅助消耗:磷酸1 kg/t油,烧碱1-2kg/t油,白土8-30kg/t油,柠檬酸0.2kg/t油。4)工艺流程说明 本车间采用连续式生产工艺,产品为国际大豆一级油。a、脱胶及碱炼工序 毛油先经过毛油过滤器,除去其中杂质。然后送至加热器,加热至一定温度后进入混合器,碱和磷酸分别定量注入其中。经高速混合后进入水化反应器中充分反应,用第一台自清式离心机进行油和皂脚分离,再利用第二台离心机分离水,分去皂水的油经过加热器调节温度后进入真空脱溶干燥器,脱溶干燥后的油脂去脱色工段。b、脱色工序 干燥后的脱胶碱炼油加热后与白土混合,然后进入脱色塔脱色。脱色后的油泵入叶片过滤机进行过滤,两台过滤机交替使用实现连续生产过程。脱色清油经安全过滤后送至下道工序。c、脱臭工序待脱臭清油先进入换热器中同成品油进行换热,换热后的油经加热到脱臭要求的温度后进入脱臭塔脱臭。脱臭时油从脱臭塔上部沿各层塔板溢流而下,每层塔板通有直接蒸汽,油在高温真空下除去臭味物质。然后经过冷却器至安全温度,再抛光过滤,计量后送入成品油罐贮藏。六、环境保护 自然环境是人类赖以生存发展的基本条件,是发展物质生产的基础,为了保护环境,维护生态平衡,保障人民身体健康,必须防止工业“三废”对环境的污染,环保设计方案如下:1)锅炉选用符合标准的产品,以减少灰尘对环境的污染,满足gb271-91锅炉大气污染物排放标准中的对烟气排放要求
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