| 中小型脲醛胶厂工艺、设备现存问题及改进方案 |
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| 引用本文： | 时运铭,王国兆. 中小型脲醛胶厂工艺、设备现存问题及改进方案[J]. 应用化工, 2002, 31(6): 42-44 |
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| 作者姓名： | 时运铭 王国兆 |
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| 作者单位： | 1. 河北石家庄师范专科学校,化学系,河北,石家庄,050801
2. 河北省机关事务管理局,石家庄,050000 |
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| 摘 要： | 对年产 15 0 0t～ 2 0 0 0t的脲醛胶生产厂进行了调查 ,讨论在工艺 (如聚乙烯醇的预处理、缩合前 pH值调整用酸的选择、缩合阶段pH值的控制和检测方法、产品最终 pH值的控制范围等 )和设备方面 (如反应釜、冷凝器、真空泵、回流冷凝器等 )普遍存在的问题 ,就工艺操作的优惠条件及适合该产品生产的设备的合理结构提出改进方案
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| 关 键 词： | 脲醛胶 工艺 设备 改进 |
| 文章编号： | 1671-3206(2002)06-0042-03 |
| 修稿时间： | 2002-08-12 |
Problems of process and equipment presented in the middle and small plant of urea-formaldehyde adhesive and improving methods |
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| SHI Yun ming ,WANG Guo zhao. Problems of process and equipment presented in the middle and small plant of urea-formaldehyde adhesive and improving methods[J]. Applied chemical industry, 2002, 31(6): 42-44 |
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| Authors: | SHI Yun ming WANG Guo zhao |
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| Affiliation: | SHI Yun ming 1,WANG Guo zhao 2 |
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| Abstract: | The factories that the production quantity in one year from 1 500 t to 2 000 t of urea formaldehyde resin adhesive are investigated.The problems in technology,for example,the pretreatment for polyvinyl alcohol,the selection of acid used for adjustement of pH value before condensation,the cotrolling and checking methods for pH value in the condensation stage,the controlling range of pH value for product,and so on,and in equipments,such as reactor, condenser,vacuum pump,reflux condenser,and so on,are discussed.The improving methods for which the preference conditions are controlled in technology operation and the advisable epuipment constructions for this product are pointed. |
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| Keywords: | urea formaldehyde adhesive technique equipment improvment |
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