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Abstract

At present, the polyvinyl alcohol profession is being in produces can expand suddenly, the technology renewal time, from this, appears regarding the polyvinyl alcohol production correlation equipment research and the design especially importantly.This design, investigated the domestic and foreign polyvinyl alcohol market condition and the profession development direction fully, the study polyvinyl alcohol manufacture craft, to the polyvinyl alcohol profession which studies has had known deeply.

Through the consult related material, the system study polyvinyl alcohol technical process, it has included: The acetylene has, the vinyl acetate preparation, the purification, the polymerization, the polyvinyl acetate alcoholysis.The acetylene law manufacture vinyl acetate includes many impurities, does not favor the vinyl acetate the polymerization, must through the selective evaporation working procedure its depuration purification.This design in view of vinyl acetate purification, according to actual production demand, design vinyl acetate selective evaporation construction section two towers and three towers, computation rectifying tower equipment correlation parameter and to appurtenance computation shaping, plan flow chart, equipment structure drawing.

Key words: Polyvinyl alcohol;Polyvinyl acetate; Polyvinyl acetate ester;Distillation process;Distillation columns

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Õª Òª .................................................................................................................. I Abstract ............................................................................................................. II µÚÒ»Õ ¾ÛÒÒÏ©´¼µÄ×ÛÊö ................................................................................. 1

1.1ÒýÑÔ ...................................................................................................... 1 1.2 ¾ÛÒÒÏ©´¼µÄ¹úÄÚÍâÏÖ×´ ..................................................................... 1

1.2.1 ÊÀ½ç¾ÛÒÒÏ©´¼µÄÑо¿ÏÖ×´¼°Ïû·Ñ½á¹¹ ..................................................... 1 1.2.2ÎÒ¹ú¾ÛÒÒÏ©´¼Ñо¿ÏÖ×´¼°Ïû·Ñ½á¹¹ .......................................................... 2

1.3 ¾ÛÒÒÏ©´¼µÄ¼ò½é ................................................................................. 4

1.3.1 ¾ÛÒÒÏ©´¼(PVA)µÄ¶¨Òå ............................................................................... 4 1.3.2 ¾ÛÒÒÏ©´¼µÄÐÔÖÊ ......................................................................................... 4 1.3.3 ¾ÛÒÒÏ©´¼Ê÷Ö¬µÄÃüÃû ................................................................................. 5

1.4 ¾ÛÒÒÏ©´¼Éú²úÔ­Àí¼°¹¤ÒÕÁ÷³Ì ......................................................... 5

1.4.1ÒÒȲ·¨Éú²úÔ­Àí .......................................................................................... 5 1.4.2 ¾ÛÒÒÏ©´¼µÄ¹¤ÒÕÁ÷³Ì˵Ã÷ ......................................................................... 7

1.5 ¾ÛÒÒÏ©´¼µÄÓ¦Óà ................................................................................. 9 1.6 С½á ................................................................................................... 10 µÚ¶þÕ Éè¼Æ·½°¸µÄÈ·¶¨ ............................................................................... 11

2.1 ËþÉè¼ÆÔ­Ôò ....................................................................................... 12 2.2 ×°ÖÃÁ÷³ÌµÄÈ·¶¨ ............................................................................... 13 2.3 °åÐÍÑ¡Ôñ ........................................................................................... 13 2.4 ²Ù×÷ѹÁ¦µÄÑ¡Ôñ ............................................................................... 13 2.5 ¸½ÊôÉ豸µÄÑ¡Ôñ ............................................................................... 14 2.6 »ØÁ÷±ÈµÄÑ¡ÔñÓëËþ°åÊý ................................................................... 14

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2.7 ¹¤ÒÕÁ÷³Ìͼ ....................................................................................... 14 µÚÈýÕ ´×ËáÒÒÏ©õ¥¾«Áó¶þËþ(T-202)µÄ¹¤ÒÕÉè¼Æ..................................... 14

3.1 ¾«Áó¹¤ÐòµÄÎïÁϺâËã¼°²Ù×÷Ìõ¼þµÄÈ·¶¨ ....................................... 14 3.2 ÆøÒº¸ººÉ¼ÆËã ................................................................................... 18 3.3 ¾«ÁóËþÀíÂÛËþ°åÊýµÄ¼ÆËã .............................................................. 22 3.4 ¾«ÁóËþµÄ¹¤ÒÕÉè¼Æ ........................................................................... 24

3.4.1Ëþ¾¶µÄ³õ²½Éè¼Æ ........................................................................................ 24 3.4.2 ÒçÁ÷Ñß¼°½µÒº¹ÜµÄÉè¼Æ ........................................................................... 26 3.4.3 ¹­ÐνµÒº¹ÜµÄ¿í¶ÈºÍºá½ØÃæ ................................................................... 27 3.4.4 ½µÒº¹Üµ×϶¸ß¶È ....................................................................................... 27 3.4.5 ɸ¿×µÄÉè¼Æ ............................................................................................... 28 3.4.6 ɸ°åËþµÄÁ÷ÌåÁ¦Ñ§µÄ¼ÆËã ....................................................................... 29 3.4.7 Ëþ°å¸ººÉÐÔÄÜͼ ....................................................................................... 32

3.5 Ëþ¸½¼þµÄ¹¤ÒÕÉè¼Æ¼°Ñ¡ÐÍ ............................................................... 37

3.5.1¹¤ÒÕ½Ó¹Ü .................................................................................................... 37 3.5.2·¨À¼ ............................................................................................................ 39 3.5.3ͲÌåºÍ·âÍ· ................................................................................................ 39 3.5.4³ýÄ­Æ÷ ........................................................................................................ 39 3.5.5µõÖù ............................................................................................................ 40 3.5.6ȹ×ù ............................................................................................................ 40 3.5.7ÈË¿× ............................................................................................................ 41

3.6Ëþ×ÜÌå¸ß¶ÈÉè¼Æ¼ÆËã ........................................................................ 41 3.7 ¸½ÊôÉ豸µÄ³õ²½¼ÆËã ....................................................................... 42

3.7.1ÀäÄýÆ÷(NQ-202)µÄÑ¡ÐÍ ............................................................................ 42 3.7.2ÔÙ·ÐÆ÷(ZF-202)µÄÉè¼Æ ............................................................................. 43

3.8±¾Õ·ûºÅ˵Ã÷±í ................................................................................ 44

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µÚËÄÕ ´×ËáÒÒÏ©õ¥¾«ÁóÈýËþ(T-203)µÄ¹¤ÒÕÉè¼Æ ...................................... 47

4.1 ÈýËþ¾«Áó¹¤ÐòµÄÎïÁϺâËã ............................................................... 47 4.2 ÆøÒº¸ººÉ¼ÆËã ................................................................................... 48 4.3 ÀíÂÛËþ°åÊýµÄ¼ÆËã ........................................................................... 52 4.4 ¾«ÁóËþµÄ¹¤ÒÕÉè¼Æ ........................................................................... 53

4.4.1 Ëþ¾¶µÄ³õ²½Éè¼Æ ....................................................................................... 53 4.4.2ÒçÁ÷Ñß¼°½µÒº¹ÜµÄÉè¼Æ ............................................................................ 55 4.4.3¹­ÐνµÒº¹ÜµÄ¿í¶ÈºÍºá½ØÃæ .................................................................... 56 4.4.4½µÒº¹Üµ×϶¸ß¶È ........................................................................................ 56 4.4.5 Ëþ°å²¼Öü°¸¡·§ÊýÄ¿ÓëÅÅÁÐ ................................................................... 56 4.4.6 ©ҺµãÆøËÙ ............................................................................................... 58 4.4.7Ëþ°åÁ÷ÌåÁ¦Ñ§¼ÆËã .................................................................................... 58 4.4.8 Ëþ°åµÄ¸ººÉÐÔÄÜͼ ................................................................................... 61

4.5 Ëþ¸½¼þµÄ¹¤ÒÕÉè¼Æ¼°Ñ¡ÐÍ ............................................................... 66

4.5.1¹¤ÒÕ½Ó¹Ü .................................................................................................... 66 4.5.2·¨À¼ ............................................................................................................ 68 4.5.3 ͲÌåºÍ·âÍ· ............................................................................................... 68 4.5.4 ³ýÄ­Æ÷ ....................................................................................................... 69 4.5.5µõÖù ............................................................................................................ 69 4.5.6ȹ×ù ............................................................................................................ 69 4.5.7ÈË¿× ............................................................................................................ 70

4.6Ëþ×ÜÌå¸ß¶ÈÉè¼Æ¼ÆËã ........................................................................ 70 4.7¸½ÊôÉ豸µÄ³õ²½¼ÆËã ........................................................................ 71

4.7.1 ÀäÄýÆ÷(NQ-203)µÄÑ¡ÐÍ ........................................................................... 71 4.7.2ÔÙ·ÐÆ÷(ZF-203)µÄÉè¼Æ ............................................................................. 72

4.8 ±¾Õ·ûºÅ˵Ã÷±í ............................................................................... 73

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