Simulation and optimization for separation processes of methanol and trimethoxysilane azeotrope

doi:10.16085/j.issn.1000-6613.2020-1153

Abstract

Abstract:

Trimethoxysilane is an important intermediate for the synthesis of functional organosilicon compounds. In the industrial process of catalytic production of trimethoxylsilane, a maximum-boiling azeotrope of trimethoxylsilane and methanol can be formed due to the excessive methanol. Three processes, pressure-swing distillation, extractive distillation, and extractive dividing-wall column, were explored for the separation and purification of methanol and trimethoxysilane in this study. The processes were optimized in terms of the minimum total annual cost (TAC) through using the mixed integer nonlinear programming (MINLP). The corresponding exergy efficiency and carbon dioxide emissions were investigated. The results showed that the extractive dividing-wall column process had obvious advantages, comparing with the pressure-swing distillation. The TAC used for the separation of 100kmol/h methanol (molar ratio 50.00%) and trimethoxysilane decreased by 50.25% , accounting for a range from 198.84×10⁴USD/a to 98.93×10⁴USD/a. Meanwhile, the exergy efficiency was increased from 8.17% to 13.82%, and carbon dioxide emissions are decreased from 1217.53kg/h to 684.22kg/h, resulting in a decrease of 43.80%.

Key words: azeotrope distillation, dividing-wall column, trimethoxysilane, methanol, process optimization, minimum total annual cost(TAC)

摘要：

三甲氧基硅烷（trimethoxysilane）是合成功能性有机硅化合物的重要中间体。在以甲醇和硅为原料合成三甲氧基硅烷的工业化生产过程中，过量的甲醇和产物三甲氧基硅烷会形成最高共沸物。本文探究了变压精馏、萃取精馏和隔壁塔萃取精馏三种分离提纯甲醇和三甲氧基硅烷的工艺，以最小年度总费用（TAC）为目标函数，运用混合整数非线性规划（MINLP）对三种流程进行了优化，比较了三种流程的效率和二氧化碳排放量。结果表明，与变压精馏相比，通过隔壁塔萃取精馏分离甲醇与三甲氧基硅烷共沸物具有明显的优势。分离100kmol/h甲醇（摩尔分数50.00%）和三甲氧基硅烷的TAC从198.84万美元/年降低到98.93万美元/年，降幅高达50.25%，效率从8.17%提高到13.82%，二氧化碳排放量从1217.53kg/h减少到684.22kg/h，减少了43.80%。

关键词: 共沸精馏, 隔壁塔, 三甲氧基硅烷, 甲醇, 过程优化, 最小年度总费用

CLC Number:

TQ-9

LI Qiao, TIAN Siqi, FENG Zeming, DONG Lichun. Simulation and optimization for separation processes of methanol and trimethoxysilane azeotrope[J]. Chemical Industry and Engineering Progress, 2021, 40(5): 2431-2439.

李乔, 田思琪, 冯泽民, 董立春. 甲醇和三甲氧基硅烷共沸物分离过程模拟和优化[J]. 化工进展, 2021, 40(5): 2431-2439.

Figures/Tables 9

References 30

1	SETO H, OGATA Y, MURAKAMI T, et al. Selective protein separation using siliceous materials with a trimethoxysilane-containing glycopolymer[J]. ACS Applied Materials & Interfaces, 2012, 4(1): 411-417.
2	LIU H X, ZHANG H, PENG C H, et al. UV-curable waterborne polyurethane dispersions modified with a trimethoxysilane end-capping agent and edge-hydroxylated boron nitride[J]. Journal of Coatings Technology Research, 2019, 16(5): 1479-1492.
3	SUZUKI E, ONO Y. Mechanism of active-site formation in copper-catalyzed synthesis of trimethoxysilane by the reaction of silicon with methanol[J]. Journal of Catalysis, 1990, 125: 390-400.
4	LUYBEN W L. Methanol/trimethoxysilane azeotrope separation using pressure-swing distillation[J]. Industrial & Engineering Chemistry Research, 2014, 53(13): 5590-5597.
5	LUYBEN W L. Pressure-swing distillation for minimum- and maximum-boiling homogeneous azeotropes[J]. Industrial & Engineering Chemistry Research, 2012, 51(33): 10881-10886.
6	ZHU Z Y, YU X P, MA Y X, et al. Efficient extractive distillation design for separating binary azeotrope via thermodynamic and dynamic analyses[J]. Separation and Purification Technology, 2020, 238: 116425.
7	张浩, 徐红, 黛昕, 等. 萃取精馏分离三甲氧基硅烷和甲醇的模拟和优化[J]. 现代化工, 2015, 35(1): 163-167.
	ZHANG H, XU H, DAI X, et al. Simulation and optimization of extractive distillation for separating methanol and trimethoxysilane[J]. Modern Chemical Industry, 2015, 35(1): 163-167.
8	GERBAUD V, RODRIGUEZ-DONIS I, HEGELY L, et al. Review of extractive distillation. Process design, operation, optimization and control[J]. Chemical Engineering Research and Design, 2019, 141: 229-271.
9	YANG A, SUN S R, ESLAMIMANESH A, et al. Energy-saving investigation for diethyl carbonate synthesis through the reactive dividing wall column combining the vapor recompression heat pump or different pressure thermally coupled technique[J]. Energy, 2019, 172: 320-332.
10	LUYBEN W L. High-pressure versus low-pressure auxiliary condensers in distillation vapor recompression[J]. Computers and Chemical Engineering, 2019, 125: 427-433.
11	AURANGZEB M, JANA A K. Double-partitioned dividing wall column for a multicomponent azeotropic system[J]. Separation and Purification Technology, 2019, 219: 33-46.
17	PREMKUMAR R, RANGAIAH G P. Retrofitting conventional column systems to dividing-wall columns[J]. Chemical Engineering Research and Design, 2009, 87: 47-60.
18	YILDIRIM O, KISS A A, KENIG E Y. Dividing wall columns in chemical process industry: a review on current activities[J]. Separation and Purification Technology, 2011, 80(3): 403-417.
12	YANG A, JIN S M, SHEN W F, et al. Investigation of energy-saving azeotropic dividing wall column to achieve cleaner production via heat exchanger network and heat pump technique[J]. Journal of Cleaner Production, 2019, 234: 410-422.
13	CHEN Y X, LIU C, GENG Z F. Design and control of fully heat-integrated pressure swing distillation with a side withdrawal for separating the methanol/methyl acetate/acetaldehyde ternary mixture[J]. Chemical Engineering & Processing: Process Intensification, 2018, 123: 233-248.
14	AURANGZEB M, JANA A K. A novel heat integrated extractive dividing wall column for ethanol dehydration[J]. Industrial & Engineering Chemistry Research, 2019, 58(21): 9109-9117.
15	DEJANOVIĆ I, MATIJAŠEVIĆ L, OLUJIĆ Ž. Dividing wall column-A breakthrough towards sustainable distilling[J]. Chemical Engineering & Processing: Process Intensification, 2010, 49: 559-580.
16	PATRAŞCU I, BÎLDEA C S, KISS A A. Eco-efficient downstream processing of biobutanol by enhanced process intensification and integration[J]. ACS Sustainable Chemistry & Engineering, 2018, 6(4): 5452-5461.
19	WU Y C, HSU P H, CHIEN I L. Critical assessment of the energy-saving potential of an extractive dividing-wall column[J]. Industrial & Engineering Chemistry Research, 2013, 52: 5384-5399.
20	DOUGLAS J M. Conceptual design of chemical processes[M]. New York: McGraw-Hill, 1988.
21	Inventory index factors for 2017[EB/OL]. [2017-01-01] .
22	LUYBEN W L. Distillation design and control using aspen simulation[M]. 2nd ed. New York: John Wiley & Sons Inc., 2013.
23	SEIDER W D, LEWIN D R, SEADER J D, et al. Product and process design principles: synthesis, analysis, and evaluation[M]. 4th ed. New York: John Wiley & Sons Inc., 2017.
24	BEJAN A, TSATSARON G, MARAN M. Exergy analysis. thermal design and optimization[M]. New York: John Wiley & Sons Inc., 1996: 113-163.
25	ZHU Z Y, LI G X, YANG J W, et al. Improving the energy efficiency and production performance of the cyclohexanone ammoximation process via thermodynamics, kinetics, dynamics, and economic analyses[J]. Energy Conversion and Management, 2019, 192: 100-113.
26	YU M X, CUI P Z, WANG Y L, et al. Advanced exergy and exergoeconomic analysis of cascade absorption refrigeration system driven by low-grade waste heat[J]. ACS Sustainable Chemistry & Engineering, 2019, 7(19): 16843-16857.
27	FERNÁNDEZ J R, GARCIA S, SANZ-PÉREZ E S. CO₂ capture and utilization editorial[J]. Industrial & Engineering Chemistry Research, 2020, 59(15): 6767-6772.
28	MA S T, SHANG X Y, LI L M, et al. Energy-saving thermally coupled ternary extractive distillation process using ionic liquids as entrainer for separating ethyl acetate-ethanol-water ternary mixture[J]. Separation and Purification Technology, 2019, 226: 337-349.
29	NHIEN L C, LONG N V D, KIM S Y, et al. Novel reaction-hybrid-extraction-distillation process for furfuryl alcohol production from raw bio-furfural[J]. Biochemical Engineering Journal，2019, 148: 143-151.
30	AUDET C, DENNIS J E. Mesh adaptive direct search algorithms for constrained optimization[J]. SIAM Journal on Optimization, 2006, 17(1): 188-217.

公用工程	单价/USD·GJ^-1
低压蒸气（433.15K,0.5MPa）	13.28^[23]
中压蒸气（457.15K,1.0MPa）	14.19^[23]
冷却水（进口温度303.15K；出口温度313.15K）	0.354^[23]

公用工程	单价/USD·GJ^-1
低压蒸气（433.15K,0.5MPa）	13.28^[23]
中压蒸气（457.15K,1.0MPa）	14.19^[23]
冷却水（进口温度303.15K；出口温度313.15K）	0.354^[23]

流程	最小分离功W_min/kW	损失功LW/kW	效率η/%	CO₂排放/kg·h^-1
变压精馏	96.11	1176.15	8.17	1217.53
双塔萃取精馏	90.14（-6.21%）	707.19（-39.87%）	12.75	755.10（-37.98%）
隔壁塔萃取精馏	88.55（-7.87%）	640.62（-45.53%）	13.82	684.22（-43.80%）

流程	最小分离功W_min/kW	损失功LW/kW	效率η/%	CO₂排放/kg·h^-1
变压精馏	96.11	1176.15	8.17	1217.53
双塔萃取精馏	90.14（-6.21%）	707.19（-39.87%）	12.75	755.10（-37.98%）
隔壁塔萃取精馏	88.55（-7.87%）	640.62（-45.53%）	13.82	684.22（-43.80%）

[1]	SHI Yongxing, LIN Gang, SUN Xiaohang, JIANG Weigeng, QIAO Dawei, YAN Binhang. Research progress on active sites in Cu-based catalysts for CO₂ hydrogenation to methanol [J]. Chemical Industry and Engineering Progress, 2023, 42(S1): 287-298.
[2]	XU Jiaheng, LI Yongsheng, LUO Chunhuan, SU Qingquan. Optimization of methanol steam reforming process [J]. Chemical Industry and Engineering Progress, 2023, 42(S1): 41-46.
[3]	SUN Yuyu, CAI Xinlei, TANG Jihai, HUANG Jingjing, HUANG Yiping, LIU Jie. Optimization and energy-saving of a reactive distillation process for the synthesis of methyl methacrylate [J]. Chemical Industry and Engineering Progress, 2023, 42(S1): 56-63.
[4]	SHU Bin, CHEN Jianhong, XIONG Jian, WU Qirong, YU Jiangtao, YANG Ping. Necessity analysis of promoting the development of green methanol under the goal of carbon neutrality [J]. Chemical Industry and Engineering Progress, 2023, 42(9): 4471-4478.
[5]	WANG Zijian, KE Ming, SONG Zhaozheng, LI Jiahan, TONG Yanbing, SUN Jinru. Progress in alkylation of gasoline with molecular sieve catalyst for benzene reduction [J]. Chemical Industry and Engineering Progress, 2023, 42(5): 2371-2389.
[6]	XIAO Yaoxin, ZHANG Jun, HU Sheng, SHAN Rui, YUAN Haoran, CHEN Yong. Cu-Zn catalyzed hydrogenation of furfural with methanol as hydrogen donor [J]. Chemical Industry and Engineering Progress, 2023, 42(3): 1341-1352.
[7]	HUANG Qizhong, LIU Bing, MA Hongpeng, LYU Wenjie. Methanol to olefin wastewater treatment based on a novel microchannel separation technology [J]. Chemical Industry and Engineering Progress, 2023, 42(2): 669-676.
[8]	GUO Feng, ZHANG Shangjie, JIANG Yujia, JIANG Wankui, XIN Fengxue, ZHANG Wenming, JIANG Min. Biotransformation of one-carbon resources by yeast [J]. Chemical Industry and Engineering Progress, 2023, 42(1): 30-39.
[9]	LIU Penglong, XU Xiongfei, ZHANG Wei, XU Xin, ZHANG Kan, WANG Junwen. Local modeling and optimization of K-means-PSO-SVR for methanol to aromatics [J]. Chemical Industry and Engineering Progress, 2022, 41(9): 4691-4700.
[10]	XIANG Sheng, WANG Chao, ZHUANG Yu, GU Siwen, ZHANG Lei, DU Jian. Design and control of pressure-swing distillation for separating methyl acetate-methanol-ethyl acetate azeotropic system [J]. Chemical Industry and Engineering Progress, 2022, 41(8): 4065-4076.
[11]	ZHANG Jiaqi, LIN Lina, GAO Wengui, ZHU Xing. Effect of CeO₂ morphology on the performance of CuO/CeO₂ catalyst for CO₂ hydrogenation to methanol [J]. Chemical Industry and Engineering Progress, 2022, 41(8): 4213-4223.
[12]	ZHAO Jianbing, YANG Dan, SHU Yuancao, ZHU Junbo, PU Shiping, SONG Xiaodan, LIU Shouqing, CHAI Xijuan, LI Xuemei. Preparation of Na₂CO₃/CF solid base and its catalytic transesterification of rapeseed oil [J]. Chemical Industry and Engineering Progress, 2022, 41(7): 3608-3614.
[13]	LI Guixian, ZHANG Junqiang, YANG Yong, FAN Xueying, WANG Dongliang. A novel PX production shortcut through PX selectivity intensification in toluene and methanol methylation [J]. Chemical Industry and Engineering Progress, 2022, 41(6): 2939-2947.
[14]	DONG Lin, CHEN Qingbai, WANG Jianyou, LI Pengfei, WANG Jin. Research progress in brackish water electrodialysis desalination technology [J]. Chemical Industry and Engineering Progress, 2022, 41(4): 2102-2114.
[15]	WANG Jijie, HAN Zhe, CHEN Siyu, TANG Chizhou, SHA Feng, TANG Shan, YAO Tingting, LI Can. Liquid sunshine methanol [J]. Chemical Industry and Engineering Progress, 2022, 41(3): 1309-1317.