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液体石蜡分离C10~C13正构烷烃的 工艺模拟与优化
Process Simulation and Optimization for Separation of n-Alkanes C10～C13 from
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- DOI:
- 作者:
- 张 雨1 ，刘 明1 ，孙晨晨1 ，陈鹏程1 ，张 艳1 ，张思振2
Zhang Yu1 , Liu Ming1 , Sun Chenchen1 , Chen Pengcheng1 , Zhang Yan1 , Zhang Sizhen2
- 作者单位:
- 1. 陕西未来能源化工有限公司煤制油分公司；2.天津海成能源工程技术有限公司
1. Future Energy Coal-to-oil Branch Company; 2. Tianjin Haicheng Energy Engineering Co., Ltd.
- 关键词:
- 液体石蜡；C10～C13正构烷烃；连续精馏；模拟优化
liquid paraffin; C10~C13 n-alkanes; continuous distillation; simulation optimization
- 摘要:
- 提出负压连续精馏模型对液体石蜡分离 C10～C13 正构烷烃过程进行模拟，以提高产品纯度和降低装置单耗为目标进行工艺参数优化。利用流程模拟软件构建分离模型，结合软件计算模块与分析工具，系统优化精馏过程操作压力、理论塔板数、回流比及进料位置等关键工艺参数，并探究不同产品收率下的装置单耗变化规律。优化后正构 C11、C12、C13 产品纯度均提高至 0.99，并实现较低装置单耗下产品收率在 80%~90% 范围内灵活调整。结合中试实验验证，产品的纯度与收率均满足分离要求且与模拟结果保持一致。构建的负压连续精馏模型能够满足液体石蜡分离 C10～C13 正构烷烃的指标要求，可为工业化生产装置提供理论依据与技术参考。A vacuum continuous distillation model was proposed to simulate the separation process of C10~C13 n-alkanes from liq⁃uid paraffin,and the process parameters were optimized with the objectives of improving product purity and reducing unit energy con⁃sumption. The separation model was established using process simulation software. Combined with the software's calculation mod⁃ules and analysis tools, the key process parameters of the distillation process, including operating pressure, number of theoreticalplates, reflux ratio and feed position, were systematically optimized, and the variation of plant unit energy consumption under differ⁃ent product yields was investigated. After parameter optimization, the purity of n-C11, n-C12 and n-C13 products was uniformly in⁃creased from 0.96 to 0.99, and the flexible adjustment of product yield within the range of 80%~90% was realized while maintaininglow plant unit energy consumption. Verified by pilot-scale experiments, the purity and yield of the products fully met the separationrequirements and were in good agreement with the simulation results. The established vacuum continuous distillation model can ful⁃ly satisfy the separation index requirements of C10~C13 n-alkanes from liquid paraffin, and provides a solid theoretical basis andtechnical reference for the design, optimization and operation of industrial-scale production units.