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1、evaluation of scientific development. Nature security type--nature security is to maintenance people of health value for target, through strengthening security based management, and risk management, and equipment mana

2、gement and technology supervision, ensure production in the people, and real, and system, and system, elements security reliable, and harmony unified, full control various against factors, achieved thought no slack, and

3、management no empty document, and equipment no hidden, and system no blocked, and unit zero non-stopped. Quality and efficiency--quality benefit is to adhere to the enterprise “survival, profit and development“ busine

4、ss truth, adhere to the “all activity is economic activity, all costs can be controlled, money should not be wasted“ management philosophy, management analysis, to improve management quality, improve cost control capacit

5、y and market competitiveness. Innovation of science and technology--science and technology innovation is to play the role of science and technology as the primary productive force, active use of new technologies, new

6、 materials, new processes, new equipment, increase investment in science and technology, strengthening scientific and technological training, speeding up transforming scientific and technological achievements, forming a

7、number of proprietary technology, enhancing core competitiveness. Resource-saving-the-resources saving enterprise was to reduce coal consumption, water consumption, electricity at the core, enhance the operation of lean

8、management to realize low consumption, high efficiency, reduce production costs. Second is to strengthen the business, financial, material, information and the optimization of organization and management, saving the i

9、nternal transaction costs. Harmonious development of harmonious development--is to construct a “foreign“ environment for development. “XING“ refers to the “internal security firm and internal management of the internal

10、management measures are effective, harmonious“. “Foreign currency“ means “Enterprise coordinating development of homeopathy, well, get along with the neighbors better.“ (B) XX 2013 five enterprises building intrinsic

11、safety power company goals are: unplanned outage 0 times. Class of disorders 0, 0 is equivalent forced outage rate. No personal injury accident, material and equipment accidents do not occur, no fire, no environmental po

12、llution accident. Enterprise integrated to achieve zero cases of violation, zero accidents, zero. Quality goal is: when generating capacity ≥ 7.5 billion-kilowatt, sales of over 7.11 billion kWh, total profits of ≥ 30

13、6.6 million Yuan, ... BFS++、PI、MIS、SCM Information systems infrastructure, fully integrated information system to realize information resources sharing; to expand the breadth and depth of the portal system, information s

14、ystem of Enterprise Management Assistant role to play; to improve the day-to-day operation and maintenance operation record of promoting causes and transfer system; to strengthen the trainingsupervision in large and med

15、ium goods vehicle. A is established large vehicles and small vehicles classification management of motor vehicle test mode, increased medium van car, and dangerous goods transport car, and school car test project; II i

16、s established motor vehicle test regulatory platform, achieved motor vehicle test full process video, and data remote regulatory; three is strictly motor vehicle identification management, equipped with unified of identi

17、fication equipment and tool, using mobile identification Terminal, and law enforcement records instrument, technology identification means. As to 20XX years June 20 statewide motor vehicle keep volume for 567,408 car, an

18、d last year earlier than growth 75,814 car, growth 13.36%; this year January-June, vehicles management section and license archives management section total accepted the motor vehicle registration business 42,543 car tim

19、es, which registered registration 6,905 car times, and transfer registration 3,592 car times, and change registration 1033 car times, and mortgage registration 696 car times, and cancellation registration 187 car times,

20、 and into business 980 car times, and Archives corrections 81 pieces times, and issued test qualified logo 25,429 car times, and other vehicles business 3,640 car times; supervision Survey Section relies on “motor vehicl

21、e detection remote issued test qualified logo software platform“ supervision motor vehicle test, and identification situation 7418l liangci, investigation motor vehicle exception business 30 car times, his pards business

22、 warning 244 article, vehicles and driving people sound video regulatory screenshots 1852 Zhang, checks motor vehicle archives 716 pieces times, and medium bus, and medium above truck, and Of hazardous chemicals, vehic

23、les and school buses and other key vehicle inspection record of 420. (C) based on their own, and strict adherence to defense, more cheating, false false fugitive suspects, robbery suspect vehicles and the Internet cra

24、ckdown. DMV full play to the “first line of Defense“ position control, investigating cheating, fake identification and robbery suspect vehicles through operational work, and carefully examine the documents and legal proo

25、f, check traffic violations, traffic accidents, the fugitive suspect suspected vehicles and theft than to work, further tight car, driving management business formalities review procedures. ... Truck driver information m

26、anagement platform. Motor vehicles and traffic police departments, State transport authority to further clarify the Division of labour, implementation responsibility, strengthen our collaboration and management togethe

27、r, reinforcing the management of drivers on which strongly synthetic warfare and information warfare. 3 strictly implemented. From May 1 up, a is implemented complex road and bad weather driving exam, currently DMV is ur

28、ged contractors party in treasures driving school increased simulation Highway, and continuous urgent detours, and snow days, and wet sliding road, and burst situation disposal, subjects II field to driving exam project

29、, is expected2009 2009 級(jí)化學(xué)工程與工藝課程設(shè)計(jì) 級(jí)化學(xué)工程與工藝課程設(shè)計(jì)設(shè)計(jì)題目:分離苯 設(shè)計(jì)題目:分離苯-甲苯混合物的連續(xù)精餾裝置 甲苯混合物的連續(xù)精餾裝置姓名: 姓名:學(xué)院: 學(xué)院:學(xué)號(hào): 學(xué)號(hào):成績(jī): 成績(jī):evaluation of scientific development. Nature security type--nature security is to maintenance peop

30、le of health value for target, through strengthening security based management, and risk management, and equipment management and technology supervision, ensure production in the people, and real, and system, and system,

31、 elements security reliable, and harmony unified, full control various against factors, achieved thought no slack, and management no empty document, and equipment no hidden, and system no blocked, and unit zero non-stopp

32、ed. Quality and efficiency--quality benefit is to adhere to the enterprise “survival, profit and development“ business truth, adhere to the “all activity is economic activity, all costs can be controlled, money should

33、 not be wasted“ management philosophy, management analysis, to improve management quality, improve cost control capacity and market competitiveness. Innovation of science and technology--science and technology innova

34、tion is to play the role of science and technology as the primary productive force, active use of new technologies, new materials, new processes, new equipment, increase investment in science and technology, strengthenin

35、g scientific and technological training, speeding up transforming scientific and technological achievements, forming a number of proprietary technology, enhancing core competitiveness. Resource-saving-the-resources savin

36、g enterprise was to reduce coal consumption, water consumption, electricity at the core, enhance the operation of lean management to realize low consumption, high efficiency, reduce production costs. Second is to stre

37、ngthen the business, financial, material, information and the optimization of organization and management, saving the internal transaction costs. Harmonious development of harmonious development--is to construct a “forei

38、gn“ environment for development. “XING“ refers to the “internal security firm and internal management of the internal management measures are effective, harmonious“. “Foreign currency“ means “Enterprise coordinating

39、development of homeopathy, well, get along with the neighbors better.“ (B) XX 2013 five enterprises building intrinsic safety power company goals are: unplanned outage 0 times. Class of disorders 0, 0 is equivalent force

40、d outage rate. No personal injury accident, material and equipment accidents do not occur, no fire, no environmental pollution accident. Enterprise integrated to achieve zero cases of violation, zero accidents, zero.

41、Quality goal is: when generating capacity ≥ 7.5 billion-kilowatt, sales of over 7.11 billion kWh, total profits of ≥ 306.6 million Yuan, ... BFS++、PI、MIS、SCM Information systems infrastructure, fully integrated informati

42、on system to realize information resources sharing; to expand the breadth and depth of the portal system, information system of Enterprise Management Assistant role to play; to improve the day-to-day operation and maint

43、enance operation record of promoting causes and transfer system; to strengthen the trainingsupervision in large and medium goods vehicle. A is established large vehicles and small vehicles classification management of

44、motor vehicle test mode, increased medium van car, and dangerous goods transport car, and school car test project; II is established motor vehicle test regulatory platform, achieved motor vehicle test full process video,

45、 and data remote regulatory; three is strictly motor vehicle identification management, equipped with unified of identification equipment and tool, using mobile identification Terminal, and law enforcement records instru

46、ment, technology identification means. As to 20XX years June 20 statewide motor vehicle keep volume for 567,408 car, and last year earlier than growth 75,814 car, growth 13.36%; this year January-June, vehicles managemen

47、t section and license archives management section total accepted the motor vehicle registration business 42,543 car times, which registered registration 6,905 car times, and transfer registration 3,592 car times, and ch

48、ange registration 1033 car times, and mortgage registration 696 car times, and cancellation registration 187 car times, and into business 980 car times, and Archives corrections 81 pieces times, and issued test qualified

49、 logo 25,429 car times, and other vehicles business 3,640 car times; supervision Survey Section relies on “motor vehicle detection remote issued test qualified logo software platform“ supervision motor vehicle test, and

50、identification situation 7418l liangci, investigation motor vehicle exception business 30 car times, his pards business warning 244 article, vehicles and driving people sound video regulatory screenshots 1852 Zhang, chec

51、ks motor vehicle archives 716 pieces times, and medium bus, and medium above truck, and Of hazardous chemicals, vehicles and school buses and other key vehicle inspection record of 420. (C) based on their own, and st

52、rict adherence to defense, more cheating, false false fugitive suspects, robbery suspect vehicles and the Internet crackdown. DMV full play to the “first line of Defense“ position control, investigating cheating, fake i

53、dentification and robbery suspect vehicles through operational work, and carefully examine the documents and legal proof, check traffic violations, traffic accidents, the fugitive suspect suspected vehicles and theft tha

54、n to work, further tight car, driving management business formalities review procedures. ... Truck driver information management platform. Motor vehicles and traffic police departments, State transport authority to fur

55、ther clarify the Division of labour, implementation responsibility, strengthen our collaboration and management together, reinforcing the management of drivers on which strongly synthetic warfare and information warfare.

56、 3 strictly implemented. From May 1 up, a is implemented complex road and bad weather driving exam, currently DMV is urged contractors party in treasures driving school increased simulation Highway, and continuous urgent

57、 detours, and snow days, and wet sliding road, and burst situation disposal, subjects II field to driving exam project, is expected第一章 第一章 緒論 緒論1.1 1.1 精餾的定義及原理 精餾的定義及原理精餾是一種利用回流使液體混合物得到高純度分離的蒸餾方法,是工業(yè)上應(yīng)用最廣的液體混合物分離操作,廣泛用

58、于石油、化工、輕工、食品、冶金等部門(mén)。對(duì)于一次汽化,冷凝來(lái)說(shuō),由于液體混合物中所含的組分的沸點(diǎn)不同,當(dāng)其在一定溫度下部分汽化時(shí),因低沸點(diǎn)物易于氣化,故它在氣相中的濃度較液相高,而液相中高沸點(diǎn)物的濃度較氣相高,這就改變了氣液兩相的組成。當(dāng)對(duì)部分汽化所得蒸汽進(jìn)行部分冷凝時(shí),因高沸點(diǎn)物易于冷凝,使冷凝液中高沸點(diǎn)物的濃度較氣相高,而為冷凝氣中低沸點(diǎn)物的濃度比冷凝液中要高。這樣經(jīng)過(guò)一次部分汽化和部分冷凝,使混合液通過(guò)各組分濃度的改變得到了初步分離

59、。如果多次的這樣進(jìn)行下去,將最終在液相中留下的基本上是高沸點(diǎn)的組分,在氣相中留下的基本上是低沸點(diǎn)的組分,混合物就分離為純或比較純的組分。1.2 精餾的分類(lèi) 精餾的分類(lèi)精餾操作按不同方法進(jìn)行分類(lèi)。⑴根據(jù)操作方式,可分為連續(xù)精餾和間歇精餾;⑵根據(jù)混合物的組分?jǐn)?shù),可分為二元精餾和多元精餾;⑶根據(jù)是否在混合物中加入影響汽液平衡的添加劑,可分為普通精餾和特殊精餾(包括萃取精餾、恒沸精餾、水蒸汽精餾、分子精餾和加鹽精餾等);⑷按照精餾操作的條件(如

60、壓力)不同,可分為加壓精餾、常壓精餾、減壓精餾等。1.3 1.3 精餾的操作特點(diǎn) 精餾的操作特點(diǎn)⑴通過(guò)精餾分離可以直接獲得所需要的產(chǎn)品,較其它一些分離方法,如吸收、萃取等精餾的操作流程較為簡(jiǎn)單。 ⑵精餾分離的適用范圍廣,它不僅可以分離液體混合物,而且可用于氣態(tài)或固態(tài)混合物的分離。⑶精餾過(guò)程適用于各種濃度混合物的分離,而像吸收、萃取、結(jié)晶、膜分離等操作,只有當(dāng)被提取組分濃度較低時(shí)才比較經(jīng)濟(jì)。 ⑷精餾操作是通過(guò)對(duì)混合液加熱建立汽液兩相體系的

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