浸没燃烧处理高盐高化学需氧量废水过程与能耗分析

doi:10.11949/0438-1157.20231152

摘要/Abstract

摘要：

浸没燃烧技术在处理高盐高化学需氧量(COD)废水方面具有传热效率高、不易结晶结垢、处理范围广等优势。针对此技术，首先自主设计搭建了实验平台，研究了常规浸没燃烧过程中的气液两相流动换热特性，分析了浸没燃烧关键操作参数对不同浓度高盐高COD废水的处理能力。在此基础上，为了进一步提高能效，对比了不同浸没管结构下的蒸发性能。实验结果表明：增大燃气流量与浸没深度有利于提高温升速率，缩短蒸发时间；随着有机溶液流量和有机溶液初始COD值的增大，COD去除率有所降低，其中有机溶液流量对COD的去除效率作用更加明显；采用平板多孔板与锥形多孔板浸没管结构能改善高温烟气分布情况，提高蒸发效率与热效率，但不利于浸没管背压稳定，导致液面波动程度增大；与传统单效蒸发结晶能耗对比，浸没燃烧装置运行能耗下降，总运行费用降低28.3%，经济性能得到提升。

关键词: 浸没燃烧, 废水, 两相流, 传热, 能效

Abstract:

Submerged combustion technology has the advantages of high heat transfer efficiency, resistance to crystallization and scaling, and wide treatment range in treating high salt and high chemical oxygen demand (COD) wastewater. An experimental platform used this technology was designed and constructed independently to study the heat transfer characteristics of gas-liquid two-phase flow in the conventional submerged combustion process, and to analyze the ability of key operating parameters of submerged combustion in treating high salt and high COD wastewater with different concentrations. On this basis, in order to further improve the energy efficiency, the evaporation performance under different submerged tube structures was compared. The experimental results show that increasing gas flow rate and submergence depth is conducive to improving the temperature rise rate and shortening the evaporation time. The COD removal rate decreases with the increase of organic solution flow rate and initial COD value of organic solution, in which the organic solution flow rate has a more obvious effect on the COD removal efficiency. The use of flat plate porous plate and conical porous plate submerged tube structure can improve the distribution of high-temperature flue gas and improve evaporation efficiency and thermal efficiency, but it is not conducive to the stability of the back pressure of the submerged tube, resulting in increased liquid level fluctuations. Compared with the traditional single-effect evaporation and crystallization energy consumption, submerged combustion device operating energy consumption decreases, the total operating costs reduce by 28.3%, the economic performance has been improved.

Key words: submerged combustion, wastewater, two-phase flow, heat transfer, energy efficiency

中图分类号:

TK-9

邓志诚, 许世峰, 王淇冬, 王家瑞, 王斯民. 浸没燃烧处理高盐高化学需氧量废水过程与能耗分析[J]. 化工学报, 2024, 75(3): 1000-1008.

Zhicheng DENG, Shifeng XU, Qidong WANG, Jiarui WANG, Simin WANG. Process and energy consumption analysis of high salt and high COD wastewater treatment by submerged combustion[J]. CIESC Journal, 2024, 75(3): 1000-1008.

图/表 10

图1 实验装置设计示意图

Fig.1 Schematic of evaporation system

图2 不同工况下液体温度变化

Fig.2 Liquid temperature changes under different working conditions

图3 变工况下传热系数与蒸发速率曲线

Fig.3 Heat transfer coefficients and evaporation rates under different conditions

图4 燃气流量70 L/min下高盐废水温度与质量分数变化曲线

Fig.4 Brine temperature and mass fraction changes under gas flow rate of 70 L/min

图5 不同初始状态下COD去除情况

Fig.5 COD removal under different initial conditions

图6 不同浸没管出口结构下温度变化

Fig.6 Liquid temperature changes under different immersion tube outlet structures

图7 不同蒸发器结构下相对压力波动

Fig.7 Relative pressure fluctuation under different immersion tube outlet structures

图8 不同实验条件下热效率

Fig.8 Thermal efficiency under different experimental conditions

图9 不同结构下平均蒸发速率

Fig.9 The average evaporation rates under different structures

表1 不同蒸发结晶方式运行费用对比

Table 1 Operational cost comparison of different evaporation crystallization methods

项目	浸没式燃烧	单效蒸发结晶	多（三）效蒸发结晶
蒸发量/(t/h)		0.66
有效热量/(kcal)		418686.40
能源消耗
天然气/(m³/h)	51.81	—	—
蒸汽/(t/h)	—	0.86	0.26
循环水/(t/h)	—	60.00	60.00
电/(kW/h)	4.00	12.00	15.00
运行费用
天然气费用/(CNY/h)	157.50	—	—
蒸汽费用/(CNY/h)	—	206.4	61.92
循环水费用/(CNY/h)	—	9.00	9.00
电费/(CNY/h)	2.68	8.04	10.05
总运行费用/(CNY/h)	160.18	223.44	80.97

参考文献 32

1	刘晓来, 许梦婷, 邵珍霞. 城市生活废水处理及环境保护的影响[J]. 环境与发展, 2020, 32(11): 44-45.
	Liu X L, Xu M T, Shao Z X. Urban domestic wastewater treatment and environmental impact[J]. Environment and Development, 2020, 32(11): 44-45.
2	王存存. 零排放理念下的工业废水处理技术分析[J]. 清洗世界, 2022, 38(2): 109-111.
	Wang C C. Analysis of industrial wastewater treatment technology under the concept of zero discharge[J]. Cleaning World, 2022, 38(2): 109-111.
3	黄欣, 陈业钢, 苏楠楠, 等. 高盐废水分质结晶及资源化利用研究进展[J]. 化学工业与工程, 2019, 36(1): 10-23.
	Huang X, Chen Y G, Su N N, et al. Research on fractional crysallization technologies for recovering salts from high salinity wastewater[J]. Chemical Industry and Engineering, 2019, 36(1): 10-23.
4	Saiyood S, Vangnai A S, Inthorn D, et al. Treatment of total dissolved solids from plastic industrial effluent by halophytic plants[J]. Water, Air, & Soil Pollution, 2012, 223(8): 4865-4873.
5	刘荣新. 高盐高COD废水处理技术研究进展[J]. 化工管理, 2020(10): 34-35.
	Liu R X. Research progress on treatment technology of wastewater with high salinity and COD[J]. Chemical Enterprise Management, 2020(10): 34-35.
6	孙群宁, 李会. 高浓度COD化工废水处理技术浅述[J]. 广东化工, 2020, 47(3): 156-157, 166.
	Sun Q N, Li H. Treatment technology of chemical wastewater with high COD[J]. Guangdong Chemical Industry, 2020, 47(3): 156-157, 166.
7	陈利芳, 周腾腾, 符丽纯, 等. 高盐有机化工废水处理技术分析[J]. 广州化工, 2018, 46(5): 1-2, 40.
	Chen L F, Zhou T T, Fu L C, et al. Analysis of treatment technologies for high-salinity organic chemical wastewater[J]. Guangzhou Chemical Industry, 2018, 46(5): 1-2, 40.
8	王吉坤, 李阳, 陈贵锋, 等. 臭氧催化氧化降解煤化工生化进水有机物的实验及机理[J]. 化工进展, 2021, 40(10): 5837-5844.
	Wang J K, Li Y, Chen G F, et al. Experimental and mechanism studies on degradation of the organics in biochemical influent of coal chemical industry by ozone catalytic oxidation[J]. Chemical Industry and Engineering Progress, 2021, 40(10): 5837-5844.
9	Ding P Y, Chu L B, Wang J L. Biological treatment of actual petrochemical wastewater using anaerobic/anoxic/oxic process and the microbial diversity analysis[J]. Applied Microbiology and Biotechnology, 2016, 100(23): 10193-10202.
10	Rodriguez-Caballero A, Ramond J B, Welz P J, et al. Treatment of high ethanol concentration wastewater by biological sand filters: enhanced COD removal and bacterial community dynamics[J]. Journal of Environmental Management, 2012, 109: 54-60.
11	吕伯宇, 李思凡, 商丽艳. 生物法处理工业废水的研究进展[J]. 当代化工, 2014, 43(3): 432-434.
	Lyu B Y, Li S F, Shang L Y. Research progress in the biological method for treating industrial wastewater[J]. Contemporary Chemical Industry, 2014, 43(3): 432-434.
12	任南琪, 周显娇, 郭婉茜, 等. 染料废水处理技术研究进展[J]. 化工学报, 2013, 64(1): 84-94.
	Ren N Q, Zhou X J, Guo W Q, et al. A review on treatment methods of dye wastewater[J]. CIESC Journal, 2013, 64(1): 84-94.
13	Wu X Y, Xie W J, Ye J, et al. Progress in heavy metals-containing wastewater treatment via microbial electrolysis cell: a review[J]. Journal of Water Process Engineering, 2023, 55: 104228.
14	陈金思, 金鑫, 胡献国. 有机废液焚烧技术的现状及发展趋势[J]. 安徽化工, 2011, 37(5): 9-11.
	Chen J S, Jin X, Hu X G. Present research and development trends of organic liquid waste incineration technology[J]. Anhui Chemical Industry, 2011, 37(5): 9-11.
15	Castillo Rivera L A, Sillet S, Roussy J, et al. Treatment of high organic-loaded industrial effluents[J]. Water Science and Technology, 2000, 42(5/6): 115-118.
16	李玉,张乔,王群. 蒸发结晶工艺在火电厂脱硫废水零排放中的应用[J]. 水处理技术, 2016, 42(11): 121-122.
	Li Y, Zhang Q, Wang Q. Application of evaporative crystallization process in the zero discharge of desulfurization waste water in thermal power plant[J]. Technology of Water Treatment, 2016, 42(11): 121-122.
17	Yue D B, Xu Y D, Mahar R B, et al. Laboratory-scale experiments applied to the design of a two-stage submerged combustion evaporation system[J]. Waste Management, 2007, 27(5): 704-710.
18	Iyer P A, Chieh C. Submerged combustion[J]. Desalination, 1971, 9(1): 19-31.
19	顾其详. 工业废水浸没燃烧法处理[J]. 环境污染与防治, 1983, 5(6): 20-23.
	Gu Q X. Treatment of industrial wastewater by immersion combustion method[J]. Environmental Pollution & Control, 1983, 5(6): 20-23.
20	岳东北, 聂永丰, 许玉东. 废水浸没燃烧蒸发技术的发展及应用[J]. 中国给水排水, 2005, 21(4): 28-30.
	Yue D B, Nie Y F, Xu Y D. Development and application of submerged combustion evaporation technology for wastewater treatment[J]. China Water & Wastewater, 2005, 21(4): 28-30.
21	朱德凤. 浸没燃烧蒸发器结构与性能研究[D]. 大连: 大连理工大学, 2013.
	Zhu D F. Research on structures and properties of submerged combustion evaporator[D].Dalian: Dalian University of Technology, 2013.
22	张锦泰, 黄亚继, 刘秀宁, 等. 浸没燃烧技术处理高浓度有机废水研究[J]. 环境工程, 2017, 35(7): 13-17, 22.
	Zhang J T, Huang Y J, Liu X N, et al. Submerged combustion for treatment of high concentration organic waste water[J]. Environmental Engineering, 2017, 35(7): 13-17, 22.
23	束小鑫. 浸没燃烧蒸发器浸没管结构优化及特性研究[D]. 景德镇: 景德镇陶瓷大学, 2022.
	Shu X X. Structural optimization and characteristic research of immersion tube of submerged combustion evaporator[D]. Jingdezhen: Jingdezhen Ceramic University, 2022.
24	夏珺, 蔡一地, 张俊丰, 等. 高温烟气蒸发垃圾渗滤液膜浓缩液的挥发性有机物[J]. 化工进展, 2019, 38(5): 2485-2490.
	Xia J, Cai Y D, Zhang J F, et al. Study of constitutes of volatile organic compounds resulting from high exhaust gas temperature evaporation of landfill leachate membrane concentrate[J]. Chemical Industry and Engineering Progress, 2019, 38(5): 2485-2490.
25	Zhang L Y, Wang X Y, Yue D B. Effect of submerged combustion evaporation on Cd complexation potential of organic matter in municipal solid waste landfill leachate[J]. Environmental Pollution, 2020, 267: 115573.
26	艾恒雨, 孟棒棒, 李娜, 等. 我国垃圾渗滤液膜浓缩液处理现状与污染控制建议[J]. 环境工程技术学报, 2016, 6(6): 553-558.
	Ai H Y, Meng B B, Li N, et al. Treatment status and pollution control suggestions for membrane concentrated leachate in China[J]. Journal of Environmental Engineering Technology, 2016, 6(6): 553-558.
27	Han D Y, Xu Q Q, Zhou D, et al. Design of heat transfer in submerged combustion vaporizer[J]. Journal of Natural Gas Science and Engineering, 2016, 31: 76-85.
28	Afrianto H, Tanshen M R, Munkhbayar B, et al. A numerical investigation on LNG flow and heat transfer characteristic in heat exchanger[J]. International Journal of Heat and Mass Transfer, 2014, 68: 110-118.
29	江瀚, 刘中良, 宫小龙. 增压浸没燃烧装置热经济分析[J]. 化工学报, 2011, 62(12): 3498-3502.
	Jiang H, Liu Z L, Gong X L. Thermal economics and application of pressurized submerged combustion evaporators[J]. CIESC Journal, 2011, 62(12): 3498-3502.
30	陈云根. MVR技术在蒸发浓缩中的经济性分析[J]. 中国经贸, 2015(20): 86-87.
	Chen Y G. Economic analysis of MVR technology in evaporation concentration[J]. China Business Update, 2015(20): 86-87.
31	刘鹏, 王永青. 单效蒸发机械压汽海水淡化系统热力性能分析[J]. 化学工程, 2012, 40(7): 38-42.
	Liu P, Wang Y Q. Thermal performance analysis of single-effect evaporation mechanical vapor compression seawater desalination system[J]. Chemical Engineering (China), 2012, 40(7): 38-42.
32	Shi J X, Huang W P, Han H J, et al. Review on treatment technology of salt wastewater in coal chemical industry of China[J]. Desalination, 2020, 493: 114640.

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