氯化钠废盐制铵碱的气液反应过程强化研究

doi:10.19964/j.issn.1006-4990.2022-0085

摘要/Abstract

摘要：

为了解决氯化钠废盐对环境的危害，将侯德榜制碱法应用于氯化钠废盐资源化处理过程，形成了氯化钠废盐制备碳酸氢钠、氯化铵的工艺。设计了用于氯化钠废盐资源化处理的气升式环流反应器，对氯化钠废盐资源化处理过程中的铵化、碳化等气-液反应过程强化进行了研究。利用计算流体力学（CFD）软件研究了环流反应器内部的流动及传质情况，通过比较实验值与模拟值确认了CFD模拟的可靠性。对氯化钠废盐资源化处理过程中的铵化过程、碳化过程以及后处理过程进行了实验研究。优化实验条件：在表观气速为0.044 4 m/s条件下，铵化过程通氨气的时间为70 min、碳化过程通二氧化碳的时间为105 min、第二次铵化过程通氨气的时间为40 min。在此条件下所得碳酸氢钠的纯度为89.68%、氯化铵的纯度为85.11%，氯化铵经重结晶精制所得产品纯度可达到99.9%，碳酸氢钠和氯化铵产品纯度均符合市场需求。

关键词: 氯化钠废盐, 气升式环流反应器, 数值模拟, 流场分析, 资源化

Abstract:

In order to solve the harm of sodium chloride waste salt to the environment，Hou De‐bang′s process was employed to the sodium chloride waste salt treatment process.A process for preparation of NaHCO₃ and NH₄Cl products from sodium chloride waste salt resources was developed.The airlift loop reactor for recycling of odium chloride waste salt was designed，and the intensification of gas-liquid reaction processes such as ammonification and carbonization in the resource utilization process of sodium chloride waste salt were studied.Computational fluid dynamics（CFD） software was used to study the flow and mass transfer in the circulation reactor，and the reliability of CFD simulation was confirmed by comparing the experimental value with the simulated value.The ammonification process，carbonization process and post-treatment process in the treatment of sodium chloride waste salt treatment were experimentally studied.Optimization of experimental conditions：under the condition of apparent gas velocity of 0.044 4 m/s，the time for ammonia gas to pass through the ammonification process was 70 min，the time for carbon dioxide to pass through the carbonization process was 105 min，and the time for ammonia gas to pass through the second ammonification process was 40 min.Under this condition，the purity of sodium bicarbonate and ammonium chloride was 89.68% and 85.11% respectively.The purity of ammonium chloride after recrystallization could reach 99.9%.The purity of sodium bicarbonate and ammonium chloride products all met the market demand.

Key words: sodium chloride waste salt, airlift loop reactor, numerical simulation, flow field analysis, resource utilization

中图分类号:

TQ131.12

沈加琪,严生虎,张跃,刘建武,沈介发. 氯化钠废盐制铵碱的气液反应过程强化研究[J]. 无机盐工业, 2022, 54(12): 99-105.

SHEN Jiaqi,YAN Shenghu,ZHANG Yue,LIU Jianwu,SHEN Jiefa. Study on intensification of gas-liquid reaction process for sodium chloride waste salt to ammonium alkali[J]. Inorganic Chemicals Industry, 2022, 54(12): 99-105.

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参考文献 20

1	苗淑兰, 陈侠, 周登凤, 等. 聚苯硫醚生产废水的资源化利用[J]. 化工进展, 2020, 39(10)：4283-4289.
	MIAO Shulan, CHEN Xia, ZHOU Dengfeng, et al. Resource utilization of polyphenylene sulfide production wastewater[J]. Chemical Industry and Engineering Progress, 2020, 39(10)：4283-4289.
2	李绪宾, 刘会娥, 陈爽, 等. 工业废盐的流态化行为[J]. 化工进展, 2017, 36(1)：81-90.
	LI Xubin, LIU Hui′e, CHEN Shuang, et al. Fluidization behavior of industrial waste salt[J]. Chemical Industry and Engineering Progress, 2017, 36(1)：81-90.
3	吕宏俊, 郭和民. 焚烧法处理有机废液的工艺选择[J]. 中国环保产业, 2005(12)：36-38.
	LV Hongjun, GUO Hemin. Process selection on organic waste liquors treated by incinerating method[J]. China Environmental Protection Industry, 2005(12)：36-38.
4	丁志广, 郭键柄, 卢超. 化工废盐无害化处理的实验研究[J]. 无机盐工业, 2020, 52(2)：58-61.
	DING Zhiguang, GUO Jianbing, LU Chao. Experimental study on harmless disposal of chemical waste salts[J]. Inorganic Chemicals Industry, 2020, 52(2)：58-61.
5	姜海超, 申银山, 陈晓飞, 等. 含氰工业废盐中杂质的高温氧化脱除实验研究[J]. 无机盐工业, 2020, 52(2)：62-64.
	JIANG Haichao, SHEN Yinshan, CHEN Xiaofei, et al. Experimental study on high temperature oxidation removal of impurities in cyanide-contained industrial waste salts[J]. Inorganic Chemicals Industry, 2020, 52(2)：62-64.
6	郑虞琪, 刘志英, 李玲, 等. 热化学法降解农药废盐中的有机物[J]. 环境污染与防治, 2021, 43(7)：822-828.
	ZHENG Yuqi, LIU Zhiying, LI Ling, et al. Degradation of organics in pesticide waste salts by thermochemical method[J]. Environmental Pollution and Control, 2021, 43(7)：822-828.
7	施云芬, 任惠敏, 于大禹. 气升式环流反应器处理废水的研究进展[J]. 东北电力大学学报, 2018, 38(4)：76-84.
	SHI Yunfen, REN Huimin, YU Dayu. Research progress on treatment of wastewater by airlift loop reactor[J]. Journal of Northeast Electric Power University, 2018, 38(4)：76-84.
8	LUO Huping, AL-DAHHAN M H. Local characteristics of hydrodynamics in draft tube airlift bioreactor[J]. Chemical Engineering Science, 2008, 63(11)：3057-3068.
9	BEHIN J. Deinking in bubble column and airlift reactors：Influence of wastewater of Merox unit as pulping liquor[J]. Chemical Engineering Research and Design, 2012, 90(8)：1045-1051.
10	ARUNKUMAR R, MUTHUKUMAR K. Phenomenological simulation model for the prediction of hydrodynamic parameters of an internal loop airlift reactor[J]. Industrial & Engineering Chemistry Research, 2010, 49: 4995-5000.
11	张立英, 黄青山. 气升式环流反应器的理论研究进展[J]. 过程工程学报, 2011, 11(1)：162-173.
	ZHANG Liying, HUANG Qingshan. Research progress in the modeling theory of airlift loop reactor[J]. The Chinese Journal of Process Engineering, 2011, 11(1)：162-173.
12	黄建新, 秦华明, 杨金水, 等. 外环流气升式反应器发酵生产聚β-羟基丁酸酯[J]. 西北大学学报：自然科学版, 2004(2)：199-202.
	HUANG Jianxin, QIN Huaming, YANG Jinshui, et al. Studies on producing poly-β-hydroxybutyrate in external loop airlift reactor[J]. Journal of Northwest University：Natural Science Edition, 2004(2)：199-202.
13	闻建平, 潘磊, 白静. 多导流筒、低高径比气升环流反应器处理化肥厂含氨氮废水的中试研究[J]. 小氮肥, 2004(5)：16-17.
	WEN Jianping, PAN Lei, BAI Jing. Pilot study on the treatment of ammonia-containing nitrogen-containing wastewater in fertilizer plants with multiple diversion cylinders and low and high diameter specific airlift loop reactor[J]. Small Nitrogenous Fertilizer Plant, 2004(5)：16-17.
14	乔萍, 闻建平. 气升式环流反应器合成2-氯-5-氯甲基吡啶[J]. 天津化工, 2002(5)：4-5.
	QIAO Ping, WEN Jianping. Synthesis of 2-chloro-5-（chloromet-hyl） pyridine by airlift loop reactor[J]. Tianjin Chemical Industry Journal, 2002(5)：4-5.
15	WAGH S M, KORANNE K V, SONOLIKAR R L. Operating and hydrodynamic characteristics of a reversed flow jet loop bioreactor with ejector[J]. Bioresource Technology, 2012, 110: 417-422.
16	GUO Xin, YAO Lishan, HUANG Qingshan. Aeration and mass transfer optimization in a rectangular airlift loop photobioreactor for the production of microalgae[J]. Bioresource Technology, 2015, 190: 189-195.
17	郭秋丽, 赵德智, 刘永民, 等. 气升式环流反应器特性参数的研究进展[J]. 应用化工, 2017, 46(4)：765-769.
	GUO Qiuli, ZHAO Dezhi, LIU Yongmin, et al. Research progress on characteristic parameters of airlift loop reactor[J]. Applied Chemical Industry, 2017, 46(4)：765-769.
18	李绍果, 薛天艳, 齐涛, 等. 分段进气多级环流反应器流动与传质特性研究[J]. 化学工程, 2013, 41(7)：38-41.
	LI Shaoguo, XUE Tianyan, QI Tao, et al. Flow and mass transfer characteristics of multi-sparger and multi-stage internal airlift loop reactor[J]. Chemical Engineering （China）, 2013, 41(7)：38-41.
19	张华海, 王铁峰. CFD-PBM耦合模型模拟气液鼓泡床的通用性研究[J]. 化工学报, 2019, 70(2)：487-495.
	ZHANG Huahai, WANG Tiefeng. Generality of CFD-PBM coupled model for simulations of gas-liquid bubble column[J]. CIESC Journal, 2019, 70(2)：487-495.
20	FELIX G, EMILIO G. Bioreactor scale-up and oxygen transfer rate in microbial processes：An overview[J]. Biotechnology Advances, 2009, 27(2)：153-176.

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