Simulation and Operation Cost Estimate for Phenol Extraction and Solvent Recovery Process of Coal-Gasification Wastewater

The technical and economic analysis of supercritical water oxidation (SCWO) and biochemical process for Lurgi coal gasification wastewater (LCGW) treatment were carried out. The findings include the analysis of flow sheet, effluent quality and operation cost of the two processes. Studies show that the SCWO process is more simply and easier to control than the biochemical process. The effluent treated with SCWO process could reach national discharge standard I (GB 8978-1996) without other pretreatment and advanced processes, and could gain 2.3 yuan RMB/t(LCGW). While the operation cost of biochemical treatment is 41.8 yuan YMB/t(LCGW). The SCWO process shows a unique advantage in both technology and economy and will be a promising technique for LCGW treatment.

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Conceptual design of a modified phenol and ammonia recovery process for the treatment of coal gasification wastewater

Chemical Engineering Journal ◽

10.1016/j.cej.2016.07.013 ◽

2016 ◽

Vol 304 ◽

pp. 621-628 ◽

Cited By ~ 23

Author(s):

Hengjun Gai ◽

Hongbing Song ◽

Meng Xiao ◽

Yirong Feng ◽

Yumin Wu ◽

...

Keyword(s):

Conceptual Design ◽

Coal Gasification ◽

Recovery Process ◽

Ammonia Recovery ◽

Coal Gasification Wastewater

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Operating Conditions of Hollow Fiber Supported Liquid Membrane for Phenol Extraction from Coal Gasification Wastewater

Journal of Membrane and Separation Technology ◽

10.6000/1929-6037.2014.03.02.5 ◽

2014 ◽

Vol 3 (2) ◽

pp. 100-107

Author(s):

Yao Jie Yao Jie ◽

◽

Cai Chao ◽

Zhang Dandan ◽

Guo Hongxia ◽

...

Keyword(s):

Hollow Fiber ◽

Coal Gasification ◽

Liquid Membrane ◽

Operating Conditions ◽

Supported Liquid Membrane ◽

Phenol Extraction ◽

Coal Gasification Wastewater

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Development of phenols recovery process with novel solvent methyl propyl ketone for extracting dihydric phenols from coal gasification wastewater

Journal of Cleaner Production ◽

10.1016/j.jclepro.2018.07.161 ◽

2018 ◽

Vol 198 ◽

pp. 1632-1640 ◽

Cited By ~ 19

Author(s):

Chao Guo ◽

Yangtong Tan ◽

Siyu Yang ◽

Yu Qian

Keyword(s):

Coal Gasification ◽

Recovery Process ◽

Propyl Ketone ◽

Coal Gasification Wastewater ◽

Methyl Propyl Ketone

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Integration of thermo-vapor compressors with phenol and ammonia recovery process for coal gasification wastewater treatment system

Energy ◽

10.1016/j.energy.2018.10.019 ◽

2019 ◽

Vol 166 ◽

pp. 108-117 ◽

Cited By ~ 2

Author(s):

Chen Bokun ◽

Qian Yu ◽

Yang Siyu

Keyword(s):

Wastewater Treatment ◽

Coal Gasification ◽

Recovery Process ◽

Treatment System ◽

Wastewater Treatment System ◽

Ammonia Recovery ◽

Coal Gasification Wastewater

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Process Simulation and Optimization on Phenol Extraction for Coal-Gasification Wastewater

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.550-553.2349 ◽

2012 ◽

Vol 550-553 ◽

pp. 2349-2353 ◽

Cited By ~ 1

Author(s):

Chu Fen Yang ◽

Jian Wei Guo ◽

Shi Ying Yang ◽

Guan Feng Wei

Keyword(s):

Process Parameters ◽

Coal Gasification ◽

Phenol Removal ◽

Solvent Ratio ◽

Reflux Ratio ◽

High Concentration ◽

Residual Solvent ◽

Simulation And Optimization ◽

Phenol Extraction ◽

Coal Gasification Wastewater

Coal-gasification wastewater is an industrial toxic wastewater with high concentration of phenols. To provide process parameters for industrial practice, simulation and optimization were carried out on the phenol removal process for coal-gasification wastewater which included phenol extraction, solvent distillation and residual solvent stripping. Calculation results showed that the optimized process parameters were as the following. When solvent ratio was 1:6, after four-stage extraction by methyl isobutyl ketone, the concentration of phenols in the wastewater can be reduced to below 200mg/L from 5000mg/L. While in the solvent distillation column, to make the solvent recycling usable and cut down solvent consumption, the column stages was recommended as 15, reflux ratio R as 0.1360, and feed stage as 10. Moreover, to recover the residual solvent in the wastewater, the number of theoretical stages for the stripper was proposed as 5, and distillate rate as 2388kg/hr.

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