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1、 毕毕 业业 设设 计计（ 论论 文文）题目：设计年产 16 万吨芦苇制浆厂碱回收分厂子题：重点设计燃烧工段 专 业： 轻化工程 指导教师： 李 娜 学生姓名： 李 菁 菁 班级-学号： 轻化 092-19 2013 年 6 月大连工业大学本科毕业设计（论文）大连工业大学本科毕业设计（论文）设计年产设计年产 1616 万吨芦苇制浆厂碱回收分厂万吨芦苇制浆厂碱回收分厂Designed annual output of 160000 tons of reed pulp plant chemical recovery plant设计（论文）完成日期 2013 年 6 月 7 日学 院： 轻工与化学工
2、程学院 专 业： 轻 化 工 程 学 生 姓 名： 李 菁 菁 班 级 学 号： 轻 化 09219 指 导 教 师： 李 娜 评 阅 教 师： 2013 年 6 月大连工业大学 2013 届本科生毕业设计（论文） 摘 要当前碱法制浆占领了整个化学浆生产领域,因得益于蒸煮、洗涤、筛选、漂白技术的飞速发展，以及占有环保方面的优势,在纸浆生产中占据了绝对的主导地位,碱回收成为了制浆厂必不可少的组成部分。他在治理黑液污染、保护环境、节约资源能源，实现我国造纸工业的可持续发展方面起到了非常重要的作用。随着科学技术的逐步发展，新技术不断应用于制浆造纸企业的碱回收工段，提高了化学药品回收率和燃烧热效率，减
3、少了对环境的污染。本设计特点是工艺成熟、稳定，设备比较先进且操作性和稳定性强，已得到国内有关企业的证实。从蒸煮出来的黑液用鼓式真空洗浆机洗涤使黑液的提取率达到 98%,碱回收率高达 94%，碱自给率为 94%，燃烧热效率 53.04%。蒸发工段采用七体五效板式降膜蒸发站，使黑液由洗涤工段的 10%升至48%，再通过碱喷射炉进行燃烧，环保，节能。碱喷射炉采用双汽包低臭技术，静电除尘率为 99%，防止烟气二次污染。不可否认，目前投资、能耗、环境是碱回收技术发展的主要影响因素和动力。在碱回收新技术的应用下，设备效率提高了，也等于提高了产量，还明显的提高了化学药品的回收率，减少了对环境的污染，并且对燃
4、烧热量进行回收，达到良好的环境效益，社会效益和经济效益。关键词：碱回收；碱法制浆；燃烧；设计平衡计算大连工业大学 2013 届本科生毕业设计（论文） IAbstractAt present, the alkaline pulping occupied the whole of the chemical pulp production, for cooking, washing, screening, bleaching technology thanks to the rapid development, and has advantages of environmental protecti
5、on, in the pulp production occupies the absolute dominant position, the alkali recycling has become the indispensable part of the pulping plant. He control black liquor pollution, protect the environment, saving energy resources, realize the sustainable development of Chinas paper industry has playe
6、d a very important role. With the gradual development of science and technology, new technology application in pulp and paper enterprises constantly alkali recovery section, improve the chemical recovery rate and combustion efficiency, reduce the pollution to the environment. This design is characte
7、rized by technology mature, stable, equipment is more advanced and operability and stability is strong, has been confirmed by the relevant domestic enterprises.Black liquor from cooking out of the use of drum-type vacuum pulp washing machine wash the black liquor extraction rate reached 98%, alkali
8、recovery rate is as high as 94%, its self-sufficiency rate of alkali is 94%, the combustion thermal efficiency is 53.04%. Five effect evaporation section using seven body plate falling film evaporation station, make the black liquor by washing section of 10% to 48%, again through the alkali injectio
9、n furnace combustion, environmental protection, energy saving. Low alkali injection furnace with double drum smelly technology, electrostatic collection coefficient was 99%, prevent gas secondary pollution.There is no denying the fact that the investment and energy consumption, environment is the ma
10、in influence factors of alkali recovery technology development and motivation. Under the alkali recycling the application of new technology, equipment efficiency, also is equal to the increased production, also obviously improve the recovery of chemicals to reduce the pollution to the environment, a
11、nd the combustion heat recycling, and achieve good environmental benefits, social benefits and economic benefits.大连工业大学 2013 届本科生毕业设计（论文） IIKey Words: alkali recovery; Alkaline pulping; Combustion; Design balance calculatio大连工业大学 2013 届本科生毕业设计（论文） III目 录摘 要IAbstract II引 言1第一章 总论31.1 设计依据31.2 设计范围31.3 指导思想31.4 厂址选择及论证41.4.1 地理位置41.4.2 气候条件41.4.3 原料来源41.4.4 水源方面51.4.5 动力、燃料来源5第二章 生产方法论证及生产工艺流程说明62.1 备料工段
