活性炭烟气脱硫的应用基础研究
文献类型：学位论文
| 作者 | 姚雨 |
| 学位类别 | 硕士 |
| 答辩日期 | 2002-06 |
| 授予单位 | 中国科学院过程工程研究所 |
| 授予地点 | 中国科学院过程工程研究所 |
| 导师 | 郭占成 |
| 关键词 | 活性炭 烟气脱硫 二氧化硫 活性炭改性 |
| 其他题名 | Research of The Removal of Sulfur Oxide from Flue Gas over Activated Carbon |
| 学位专业 | 化学工艺 |
| 中文摘要 | 该文重点研究了成型煤基活性炭在低温下和烟气窗口温度下的脱硫反应条件对活性炭脱硫效率的影响;对成型煤基活性炭进行浸渍金属氧化物改性,并考察了浸渍活性炭的脱硫活性.不论是在近常温下还是在烟气窗口温度下,活性炭都表现了较好的脱硫效果,较大比表面积的活性炭有较好的脱硫效果,在低温下表面的尤其明显;氧气浓度、水蒸气含量、空速及反应温度是影响同种活性炭脱硫效果的主要因素,在氧气浓度在9%左右,脱硫效果较好;反应温度在200℃左右时具有较高的脱硫效率;水蒸气含量与反应温度有较大相关性;空速越小脱硫效果越好,但由此会增加操作费用.浸渍铜、铁及钒等金属氧化物的活性炭,能显著提高其脱硫性能,但用在含水蒸气的氮气氛中加热再生后,浸渍活性炭的脱硫活性显著降低,与非浸渍活性炭的脱硫性能相当. |
| 英文摘要 | SO_2 emission from coal-combustion has caused serious atmosphere environmental pollution. Flue gas desulfurization is the ideal method to deal with the problem. Among flue gas desulfurization technologies, removal of SO_2 from flue gas over activated carbons is a good method. The mechanism of continuous removal of SO_2 over activated carbon is as follows: first, SO_2 is adsorbed over the surface of activated carbons, and then the adsorbed SO_2 is oxidized to SO_3 which is transformed into H_2SO_4 in the presence of H_2O. The acid adsorbed on the carbon surface will be continuously removed by supplying sufficient water onto activated carbons surface. As the acid flows out, the reactive sites once again become reactive towards SO_2 adsorption. The most representative characteristics of this method are continuous removal of SO_2, no need for frequent regeneration, low temperature, energy and water saving. The thesis aimed at the effect factors of SO_2 removal from flue gas over activated carbon at about 50℃ or about 200℃. At the same time, the removal of SO_2 from flue gas over metallic oxides supported activated carbon was also investigated. It is found from the tests that the efficiency of removal SO_2 from flue gas over activated carbons is high; the efficiency of desulfurization increases with the increase of the specific surface area, especially at low temperature; the efficiency of desulfurization increases with the decrease of the space velocity, but it will add cost; that there is an optimal content of O_2 and H_2O in the flue gas: the content of oxygen at about 9% is best; the best content of moisture in the flue gas is related with reaction temperature. Activated carbon supported V_2O_5, CuO and Fe_2O_3 shows higher desulfurization activity comparing with activated carbon in the removal of SO_2 from flue gas, but if regeneration by heating in nitrogen, its desulfurization ability will decrease. |
| 语种 | 中文 |
| 公开日期 | 2013-09-16 |
| 页码 | 67 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/1330]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 推荐引用方式 GB/T 7714 | 姚雨. 活性炭烟气脱硫的应用基础研究[D]. 中国科学院过程工程研究所. 中国科学院过程工程研究所. 2002. |
入库方式： OAI收割
来源：过程工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。