Sulfur retention efficiency of clean coke produced by co-pyrolysis of coal with CaCO3 to substitute household coal

Sulfur retention efficiency of clean coke produced by co-pyrolysis of coal with CaCO3 to substitute household coal

Raw coal is used by many suburban and rural households for cooking and heating and results in severe air pollution, especially problematic SO2 emissions. A source treatment strategy was proposed to reduce SO2 emissions, which used the co-pyrolysis of raw coal with a CaCO3 additive to produce clean c...

Full description

Bibliographic Details
Main Authors: Shoujun Liu, Mingyi Wang, Kaixia Zhang, Zhongliang Yu, Song Yang, Ju Shangguan, Guoqiang Zhang, Wenguang Du, Jin Li, Yuehua Liu
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2021-01-01
Series:Carbon Resources Conversion
Subjects:
Clean coke
SO2 emission reduction
Household combustion
Sulfur retention mechanism
Online Access:http://www.sciencedirect.com/science/article/pii/S2588913321000259
id doaj-4381a580ae1c4e6aa2fe7326a355ee0a
record_format Article
collection DOAJ
language English
format Article
sources DOAJ
author Shoujun Liu
Mingyi Wang
Kaixia Zhang
Zhongliang Yu
Song Yang
Ju Shangguan
Guoqiang Zhang
Wenguang Du
Jin Li
Yuehua Liu
spellingShingle Shoujun Liu
Mingyi Wang
Kaixia Zhang
Zhongliang Yu
Song Yang
Ju Shangguan
Guoqiang Zhang
Wenguang Du
Jin Li
Yuehua Liu
Sulfur retention efficiency of clean coke produced by co-pyrolysis of coal with CaCO3 to substitute household coal
Carbon Resources Conversion
Clean coke
SO2 emission reduction
Household combustion
Sulfur retention mechanism
author_facet Shoujun Liu
Mingyi Wang
Kaixia Zhang
Zhongliang Yu
Song Yang
Ju Shangguan
Guoqiang Zhang
Wenguang Du
Jin Li
Yuehua Liu
author_sort Shoujun Liu
title Sulfur retention efficiency of clean coke produced by co-pyrolysis of coal with CaCO3 to substitute household coal
title_short Sulfur retention efficiency of clean coke produced by co-pyrolysis of coal with CaCO3 to substitute household coal
title_full Sulfur retention efficiency of clean coke produced by co-pyrolysis of coal with CaCO3 to substitute household coal
title_fullStr Sulfur retention efficiency of clean coke produced by co-pyrolysis of coal with CaCO3 to substitute household coal
title_full_unstemmed Sulfur retention efficiency of clean coke produced by co-pyrolysis of coal with CaCO3 to substitute household coal
title_sort sulfur retention efficiency of clean coke produced by co-pyrolysis of coal with caco3 to substitute household coal
publisher KeAi Communications Co., Ltd.
series Carbon Resources Conversion
issn 2588-9133
publishDate 2021-01-01
description Raw coal is used by many suburban and rural households for cooking and heating and results in severe air pollution, especially problematic SO2 emissions. A source treatment strategy was proposed to reduce SO2 emissions, which used the co-pyrolysis of raw coal with a CaCO3 additive to produce clean coke. The effect of Ca/S molar ratio on the SO2 capture efficiency of clean coke was investigated, and the SO2 retention efficiency was optimized at a Ca/S molar ratio of 1.5. The sulfur retention mechanism of clean coke was attributed to: (1) CaCO3 decomposition to CaO and partial reaction of CaO with H2S to generate CaS during pyrolysis. (2) Transformation of the remaining sulfur in the clean coke to SO2 during combustion, capture by unreacted CaO to form CaSO4, and direct oxidation of CaS to CaSO4. The feasibility of SO2 emission reduction by clean coke in a practical household stove was verified.
topic Clean coke
SO2 emission reduction
Household combustion
Sulfur retention mechanism
url http://www.sciencedirect.com/science/article/pii/S2588913321000259
work_keys_str_mv AT shoujunliu sulfurretentionefficiencyofcleancokeproducedbycopyrolysisofcoalwithcaco3tosubstitutehouseholdcoal
AT mingyiwang sulfurretentionefficiencyofcleancokeproducedbycopyrolysisofcoalwithcaco3tosubstitutehouseholdcoal
AT kaixiazhang sulfurretentionefficiencyofcleancokeproducedbycopyrolysisofcoalwithcaco3tosubstitutehouseholdcoal
AT zhongliangyu sulfurretentionefficiencyofcleancokeproducedbycopyrolysisofcoalwithcaco3tosubstitutehouseholdcoal
AT songyang sulfurretentionefficiencyofcleancokeproducedbycopyrolysisofcoalwithcaco3tosubstitutehouseholdcoal
AT jushangguan sulfurretentionefficiencyofcleancokeproducedbycopyrolysisofcoalwithcaco3tosubstitutehouseholdcoal
AT guoqiangzhang sulfurretentionefficiencyofcleancokeproducedbycopyrolysisofcoalwithcaco3tosubstitutehouseholdcoal
AT wenguangdu sulfurretentionefficiencyofcleancokeproducedbycopyrolysisofcoalwithcaco3tosubstitutehouseholdcoal
AT jinli sulfurretentionefficiencyofcleancokeproducedbycopyrolysisofcoalwithcaco3tosubstitutehouseholdcoal
AT yuehualiu sulfurretentionefficiencyofcleancokeproducedbycopyrolysisofcoalwithcaco3tosubstitutehouseholdcoal
_version_ 1721514219485003776
spelling doaj-4381a580ae1c4e6aa2fe7326a355ee0a2021-04-22T13:40:48ZengKeAi Communications Co., Ltd.Carbon Resources Conversion2588-91332021-01-014142149Sulfur retention efficiency of clean coke produced by co-pyrolysis of coal with CaCO3 to substitute household coalShoujun Liu0Mingyi Wang1Kaixia Zhang2Zhongliang Yu3Song Yang4Ju Shangguan5Guoqiang Zhang6Wenguang Du7Jin Li8Yuehua Liu9College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; Shanxi Engineering Center of Civil Clean Fuel, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; Key Laboratory for Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; Shanxi Engineering Center of Civil Clean Fuel, Taiyuan University of Technology, Taiyuan 030024, Shanxi, ChinaShanxi Engineering Center of Civil Clean Fuel, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; Key Laboratory for Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, ChinaShanxi Engineering Center of Civil Clean Fuel, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; College of Coal Chemistry Engineering, Shangrao Normal University, Shangrao 334100, Jiangxi, China; Corresponding author at: Shanxi Engineering Center of Civil Clean Fuel, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; Shanxi Engineering Center of Civil Clean Fuel, Taiyuan University of Technology, Taiyuan 030024, Shanxi, ChinaShanxi Engineering Center of Civil Clean Fuel, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; Key Laboratory for Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, ChinaShanxi Engineering Center of Civil Clean Fuel, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; Key Laboratory for Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; Key Laboratory for Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, ChinaKey Laboratory for Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China; College of Coal Chemistry Engineering, Shangrao Normal University, Shangrao 334100, Jiangxi, ChinaShanxi Engineering Center of Civil Clean Fuel, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; Key Laboratory for Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China; Taiyuan Green Coke Energy Co. Ltd, Taiyuan, Shanxi 030006, ChinaRaw coal is used by many suburban and rural households for cooking and heating and results in severe air pollution, especially problematic SO2 emissions. A source treatment strategy was proposed to reduce SO2 emissions, which used the co-pyrolysis of raw coal with a CaCO3 additive to produce clean coke. The effect of Ca/S molar ratio on the SO2 capture efficiency of clean coke was investigated, and the SO2 retention efficiency was optimized at a Ca/S molar ratio of 1.5. The sulfur retention mechanism of clean coke was attributed to: (1) CaCO3 decomposition to CaO and partial reaction of CaO with H2S to generate CaS during pyrolysis. (2) Transformation of the remaining sulfur in the clean coke to SO2 during combustion, capture by unreacted CaO to form CaSO4, and direct oxidation of CaS to CaSO4. The feasibility of SO2 emission reduction by clean coke in a practical household stove was verified.http://www.sciencedirect.com/science/article/pii/S2588913321000259Clean cokeSO2 emission reductionHousehold combustionSulfur retention mechanism

Similar Items