Optimization calculation on gasifier radiant syngas cooler

MO Ri-gen; WANG Yan-fang

doi:10.3969/j.issn.1007-7677.2015.03.019

Abstract：Based on the thermodynamic simulation results of entrained bed gasifier with sensible heat recovery system, and from aspects such as units layout, process flow and so on, the system plan was demonstrated, the results of simulation calculation of gasifier syngas cooler dynamic check and actual operation measurement parameters were compared, in order to verify correctness of the chosen model and relative installation.The dynamic model after check to do optimization calculation and analysis of structure dimension of radiant syngas cooler which was used for high-grade recycling of syngas was used, which could make it meet the parameter requirements of each heating surface working medium inlet and outlet in syngas cooler system process, and at the same time, avoid the occurrence of slagging. The optimization results showed that considering the manufacturing, transportation and slagging, making the design of the syngas cooler inner diameter at 1.8 m was more reasonable.Inflection point temperature and outlet temperature were all reasonable as well.Drip cliff was set at the inlet, water cooled wall in inlet should be Cone or arc structure, it also can be seen from Numerical simulation that the probability of collision between the inner wall and the particles whose diameter were larger than 1 50μm was very small.