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1.太原理工大学 化学与化工学院 省部共建煤基能源清洁高效利用国家重点实验室,山西 太原 030024
2.太原理工大学 环境与生态学院 大气复合污染识别与控制山西省重点实验室,山西 太原 030024
杨婷婷(2000—),硕士研究生,研究方向为气体分离与净化,E-mail:2783629300@qq.com。
樊惠玲(1968—),博士,教授,博士研究生导师,研究方向为气体分离与净化,E-mail:fanhuiling@tyut.edu.cn。
收稿:2025-04-29,
修回:2025-05-29,
网络出版:2026-01-03,
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杨婷婷,寇佳伟,杨超等.ZnS粒径对其氧化行为及产物ZnO脱硫再生循环性能的影响[J].低碳化学与化工,
YANG Tingting,KOU Jiawei,YANG Chao,et al.Effect of ZnS particle size on its oxidation behavior and cyclic desulfurization-regeneration performance of resulting ZnO[J].Low-Carbon Chemistry and Chemical Engineering,
杨婷婷,寇佳伟,杨超等.ZnS粒径对其氧化行为及产物ZnO脱硫再生循环性能的影响[J].低碳化学与化工, DOI:10.12434/j.issn.2097-2547.20250206.
YANG Tingting,KOU Jiawei,YANG Chao,et al.Effect of ZnS particle size on its oxidation behavior and cyclic desulfurization-regeneration performance of resulting ZnO[J].Low-Carbon Chemistry and Chemical Engineering, DOI:10.12434/j.issn.2097-2547.20250206.
氧化锌(ZnO)是工业生产中广泛使用的一种精脱硫剂,因再生困难,难以循环利用。现有研究主要集中于温度、氧气浓度和空速等操作条件对ZnO再生率、组成和结构等的影响,而脱硫产物硫化锌(ZnS)粒径对ZnO脱硫再生循环性能的影响尚不明确。采用水热法制备了不同粒径(13.98 nm、18.48 nm和33.00 nm)的ZnS,并进行了氧化再生/脱硫循环测试。利用XRD、N
2
吸/脱附和XPS等表征手段,比较了3次氧化再生中样品的组成和结构,研究了ZnS粒径对ZnO脱硫再生循环性能的影响。结果表明,ZnS粒径对氧化再生速率、再生ZnO晶粒尺寸和织构性质具有显著影响。ZnS粒径越小,氧化再生速率越快,氧化时间最大缩短了60 min,氧化再生产物ZnO的晶粒尺寸越小、比表面积越大,在氧化再生/脱硫循环测试中具有越高的脱硫活性。但是,3次循环后,小粒径ZnS的氧化再生产物ZnO晶粒尺寸增幅最大(68.7%),比表面积减幅最大(29.0%),生成硫酸锌(ZnSO
4
)最多,因此脱硫性能降幅最大(32.6%)。
Zinc oxide (ZnO) is widely used as a precise desulfurization agent in industrial processes
but its regeneration is difficult
making recycling challenging. Existing studies mainly focus on the effects of operating conditions
such as temperature
oxygen concentration and space velocity
on the regeneration rate
composition and structure of ZnO. However
the effect of the particle size of the desulfurization product zinc sulfide (ZnS) on the cyclic desulfurization-regeneration performance of ZnO remains unclear. ZnS samples with different particle sizes (13.98 nm
18.48 nm and 33.00 nm) were prepared via a hydrothermal method
and oxidative regeneration/desulfurization cycle tests were conducted. Characterization techniques including XRD
N
2
adsorption/desorption and XPS were used to compare the composition and structure of the samples during three oxidative regeneration cycles
and to investigate the effect of ZnS particle size on the cyclic desulfurization-regeneration performance of ZnO. The results show that ZnS particle size has a significant influence on the oxidation regeneration rate
the crystallite size and the textural properties of regenerated ZnO. Smaller ZnS particles lead to faster oxidation regeneration
with the oxidation time shortened by up to 60 min
and produce regenerated ZnO with smaller crystallite sizes and larger specific surface areas
resulting in higher desulfurization activity during the oxidative regeneration/desulfurization cycles tests. However
after three cycles
ZnO regenerated from small-particle ZnS exhibits the largest increase in crystallite size (68.7%)
the greatest decrease in specific surface area (29.0%)
and the highest formation of zinc sulfate (ZnSO
4
)
thereby showing the largest decline in desulfurization performance (32.6%).
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