摘要
采用本征动力学装置进行了煤制合成天然气（SNG）甲烷化反应研究，实验采用0．154～0．198mm的自制甲烷化催化剂NJ34，反应温度300500℃，反应压力2．0～5．0MPa，体积空速50009000h^-1。实验结果表明，在温度和空速一定的条件下，反应压力的变化对催化剂的CO转化率、CO2转化率以及总碳转化率的影响不明显；在反应温度和压力一定的条件下，气体空速的变化对催化剂的CO转化率的影响不明显，CO2转化率出现了一定的波动；在压力和空速一定的条件下，随着反应温度的提高，CO和CO2转化率都呈下降趋势，且CO2转化率的下降更加显著。
The methanation for SNG from coal-based syngas in a reactor for intrinsic kinetics is investigated using the selfcommand methanation catalyst sample NJ34 with the size of 0. 154 - 0. 198 mm, and under the conditions of temperature 300 - 500 ℃, pressure is 2.0 - 5.0 MPa, space velocity 5 000 - 9 000 h-1. The experimental results show that when the temperature and space velocity do not change, the shift of pressure does not exert much influence on the conversion of CO, CO2 or the total carbon. When the temperature and pressure do not change, there is no obvious change of the conversion of CO, while the con- version of CO2 fluctuates within a certain extent. When the pressure and space velocity do not change, the conversion of CO, CO2 or the total carbon is down trend, especially which of COz decreases significantly with the increasing of the temperature.
出处
《化学工业与工程技术》
CAS
2011年第2期16-20,共5页
Journal of Chemical Industry & Engineering
