School of Environmental Science and Engineering, Shanghai Jiaotong University , 800 Dongchuan Road, Shanghai, 200240, P. R. China.
Environ Sci Technol. 2014 Feb 18;48(4):2263-72. doi: 10.1021/es4048973. Epub 2014 Feb 4.
This paper proposes a novel self-developed JTS-01 desulfurizer and JZC-80 alkaline adsorbent for H2S removal and gas cleaning of the COREX coal gas in small-scale and commercial desulfurizing devices. JTS-01 desulfurizer was loaded with metal oxide (i.e., ferric oxides) catalysts on the surface of activated carbons (AC), and the catalyst capacity was improved dramatically by means of ultrasonically assisted impregnation. Consequently, the sulfur saturation capacity and sulfur capacity breakthrough increased by 30.3% and 27.9%, respectively. The whole desulfurizing process combined selective adsorption with catalytic oxidation. Moreover, JZC-80 adsorbent can effectively remove impurities such as HCl, HF, HCN, and ash in the COREX coal gas, stabilizing the system pressure drop. The JTS-01 desulfurizer and JZC-80 adsorbent have been successfully applied for the COREX coal gas cleaning in the commercial plant at Baosteel, Shanghai. The sulfur capacity of JTS-01 desulfurizer can reach more than 50% in industrial applications. Compared with the conventional dry desulfurization process, the modified AC desulfurizers have more merit, especially in terms of the JTS-01 desulfurizer with higher sulfur capacity and low pressure drop. Thus, this sorption enhanced catalytic desulfurization has promising prospects for H2S removal and other gas cleaning.
本文提出了一种新颖的自主研发的 JTS-01 脱硫剂和 JZC-80 碱性吸附剂，用于去除小型和商业脱硫装置中 COREX 煤气中的 H2S 和气体净化。JTS-01 脱硫剂在活性炭 (AC) 表面负载金属氧化物（如氧化铁）催化剂，通过超声辅助浸渍显著提高了催化剂的容量。因此，硫饱和容量和硫容量突破分别提高了 30.3%和 27.9%。整个脱硫过程结合了选择性吸附和催化氧化。此外，JZC-80 吸附剂可以有效地去除 COREX 煤气中的 HCl、HF、HCN 和灰分等杂质，稳定系统压降。JTS-01 脱硫剂和 JZC-80 吸附剂已成功应用于上海宝钢的 COREX 煤气净化商业装置。JTS-01 脱硫剂的硫容量在工业应用中可达 50%以上。与传统的干法脱硫工艺相比，改性 AC 脱硫剂具有更多的优点，特别是 JTS-01 脱硫剂具有更高的硫容量和更低的压降。因此，这种吸附增强催化脱硫技术在去除 H2S 和其他气体净化方面具有广阔的应用前景。
