炭黑对一氧化氮的吸附反应性

在管式炉石英固定床反应器上研究了程序升温条件下炭黑与NO反应的规律，主要研究了不同NO浓度、温度条件下不同炭黑、反应气中存在CO₂、O₂及其浓度改变时炭黑对NO的还原规律等.实验材料为在扩散火炬中取样得到的天然气炭黑、蜡烛炭黑、丁烷火焰炭黑，同时还选用了一种烟煤焦炭.实验结果表明：各炭黑试样与NO的反应有明确的起始反应温度和较好的反应规律;天然气炭黑比其他炭黑具有更高的脱除率、最低的起始反应温度;炭黑的起始反应温度随着NO反应气浓度增大而升高;反应气中氧存在可以降低炭黑-NO起始反应温度和反应程度最大点温度;反应气中CO₂存在对天然气炭黑反应无影响，可以降低蜡烛炭黑和焦炭与NO起始反应温度，使反应分成两个阶段.

Absorption reactivity of soot with nitric oxide

In the fixed bed reactor with a quartz tube, the effects of NO concentration, soot species, CO2, O2 concentration in the feed gas on the non-catalyzed reaction between soot and NO were investigated. The experimental materials individually came from the soot formed in diffusion flame in natural gas, candle or butane, and a kind of bituminous coal coke was also taken as experimontal material. The results showed that the reaction between soot and NO proceeded well with a sharp initial reaction temperature. The reaction between natural gas soot and NO showed a higher rate of NO reduction and a lower initial reaction temperature than the other soot species. The initial reaction temperature was higher with increasing inlet NO concentration. The presence of O2 in the feed gas lowered the initial reaction temperature and the maximum reaction temperature of the soot reaction with NO. The presence of CO2 in the feed gas had no effect on the reaction of natural gas soot with NO, but resulted in a lower initial reaction temperature of candle soot and coke reaction with NO, and separated the whole reaction process into two stages.