【作者】 常冬寅；

【导师】 陈天虎；

【作者基本信息】 合肥工业大学 ， 环境工程， 2010， 硕士

【摘要】 锰结核氨浸渣煅烧产物具有纳米颗粒特性,比表面积大,化学活性高,主要成分是四价锰,是理想的深度脱硫材料。本项目研究的主要目的是利用大洋锰结核的矿物学特性,开发大洋锰结核氨浸渣作为天然气、煤气、氮肥工业变换气深度脱除H₂S,及以H₂S、硫醇、硫醚为主的恶臭气体的应用技术。本文首先对大洋锰结核及其氨浸渣进行了表征;并通过实验分析研究了氨浸渣分解氧化的最佳煅烧条件;再利用煅烧产物的氧化性进行了脱除硫化氢的实验研究;探讨了矿物粒径、煅烧温度等因素对脱硫效果的影响;并通过对脱硫产物及脱硫尾气的检测简要分析了大洋锰结核氨浸渣的脱硫反应机理。实验所用大洋锰结核氨浸渣总锰含量约23.38 %,总铁含量约5.80 %;其480℃管式炉中煅烧产物的总锰含量约为27.01 %,MnO2含量约为40.45 %,氧化度为3.80,比表面积约135.9 m2/g;载气、矿物粒径、煅烧温度、水分都会对煅烧产物的脱硫效果产生一定影响,且在氮气做载气、矿物粒径<0.125 mm、480℃管式炉煅烧、气体未干燥条件下,煅烧氨浸渣对硫化氢的脱除容量可达310 mgS2-/（g·煅烧产物）。同时,用1.000 g 480℃管式炉煅烧氨浸渣脱除硫化氢,再生使用可达5次,总脱硫容量达到974 mgS2-/（g·煅烧产物）。更多还原

【Abstract】 The calcined products of manganese nodule leached residue are ideal desulfurization material with nano-characteristic, large surface area, strong chemical activity, and the principal constituent of Mn4+.The purpose of this project is to develop a application technology over the ocean manganese nodule leached residue by its mineralogy character which can remove H2S and malodorous gas by H2S, mercaptane, thio-ether primarily in the natural gas, the coal gas and the nitrogenous fertilizer industry converted gas.This paper researches characterization of ocean manganese nodule and ammonia leached residue firstly, then analyses the best calcination conditions of oxidative decomposition over ammonia leaching residue through experimental, and studies some factors effecting desulfurization such as mineral partical size, calcined temperature, etc. in the desulfurization experiment using calcined products of ammonia leaching residue, and deduces the desulfurization reaction mechanism from the analysis of desulfurization products and desulfurization exhaust gas. The ammonia leaching residue contains 23.38 % total manganese and 5.80 % total iron, and the calcined product at 480℃contains 27.01 % total manganese and 40.45 % MnO2, oxidation degree 3.80, specific surface area about 135.9 m2/g,. Carrier gas, mineral partical size, calcined temperature, moisture all will effect the desulfurization. The desulfurization capacity can excess 310 mgS2-/ (g·calcined product) when mineral partical size is <0.125mm, calcined temperature is 480℃, the carrier gas is moisture- bearing. Renewable time of desulfurization agent can be up to 5, and the total desulfurization capacity can excess 974 mgS2-/ (g·calcined product) using 1.000 g calcined product at 480℃.更多还原