Simulation Study On Coal Synthesis Gas Installations

Coal gasification is one of the many main ways of using coal, which is clean and efficient. It is the most priority technique which should be taken consideration in the process of turning coal into more convenient energy and products judging from the long-term production practices.Studies have shown that the carbon in coal can be divided into two parts: the easy to gasification and the difficult part. The easy-gasification part (about 80% of the carbon content) would be gasified quickly in a short period of time, while the remaining 20% of the coal require a longer time to complete gasification. People have begun adopting a classification conversion technology, namely, separation of combustion and gasification, in order to improve the efficiency of coal and make better use of coal. The easy-to-gasification part is sending to gasify firstly and then the difficult one to burn. The heart from burning is used to offer energy for the reaction of coal in return, achieving the optimum use of the heart. But low use of the heart exists widely in the current structure of gasification of coal used in combustion and gasification due to the single mean of heat transmission. We propose coal gasification equipment, which can not only achieve the heat transmission with the cycle of excessive materials, but also transfer heart energy through the heart transfer surface, in order to reduce nitrogen oxide synthesis and improve the content of H on the basis of previous experiences. The device cans simply the follow-up of the treatment process greatly while achieving to isolate the product gas from combustion emissions completely.The numerical simulation has unique advantages, such as low cost, short cycle, the ability to obtain complete the data measured by a variety of state to simulate the actual operation process compared to experimental research. So this paper adopts fluent software to simulate the device. The main contents are firstly using CAD software to map out the three-dimensional geometric model after simplification on the basis of the analysis and reasonable assumptions and then grid the geometric model by the pre-processing software Gambit, after which is transmitted into Fluent to simulate and calculate. We can get various results by adjusting diameter high ratio, solid particle diameter and other parameters. The find the parameters of the best heart transmission on accurate values or a range by a comparative analysis of the results obtained during the simulation. The results of data analysis can offer reference for the numerical simulation of chemical reactions as well as the construction of the experiment device data to save the high cost of experiments required.