喷流加氢气化床中煤的气化特性与其汞形态演化机理研究

项目名称： 喷流加氢气化床中煤的气化特性与其汞形态演化机理研究

项目编号： No.50876008

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 金属学与金属工艺

项目作者： 何伯述

作者单位： 北京交通大学

项目金额： 28万元

中文摘要： 我国煤炭资源相对丰富，传统煤炭利用技术存在着能源利用效率低、污染物排放多的弊端，发展清洁煤技术是实现能源与社会经济可持续发展的有效途径之一。未来高效清洁煤利用技术是以煤气化为基础的煤制气（煤制合成气、煤制氢气）、合成液体燃料、IGCC 等技术。煤加氢气化的近零排放发电系统可以实现煤的高效、清洁利用，但是对煤气化制氢，特别是煤加氢制氢过程中，污染物的生成机理和种类的了解甚少，尤其是汞的形态转换规律。安全、高效、清洁的煤加氢气化炉是近零排放煤基发电系统的关键设备和根本保证。本项目以近零排放煤基发电系统中的喷流加氢气化床中煤的气化、气化操作条件下煤中汞及其形态的演变为研究重点，采用基础理论、数值模拟和试验研究相结合的方法，深入研究煤气化炉中发生的物理和化学过程，全面掌握气化炉中影响煤气化效果和其中汞 形态转变的主要机制和因素，探索解决能源利用与环境协调相容的新方案，推动清洁煤利用理论与技术的发展。

中文关键词： 煤气化；氢气；汞；喷流床；近零排放

英文摘要： Coal is relatively abundant in China. But traditional coal utilization technologies have a lot of disadvantages such as low efficiency, great pollution etc. Therefore, developing clean coal utilization technologies is one efficient way for the sustainable development of our society. The clean and efficient coal utilization technology in the future will be the coal based syngas generation, synthetic liquid fuels and IGCC etc. Zero Emission coal (ZEC) system is such a technology which is especially promising. However, the coal hydrogasification properties and the pollutants formation mechanism, especially the mercury speciation and transformation mechanism, have not been mastered. Safe, efficient and clean coal hydrogasifier is the key equipment and fundamental guarantee of the ZEC system. In this project, the coal hydrogasification properties and the mercury speciation transformation is mainly studied. The basic theories, numerical simulations and experimental researches are combined to deeply explore the physical and chemical process in the hydrogasifier so as to fully master the main mechanisms and factors that affect the coal gasification properties and the mercury speciation transformation, explore the solution for the contradiction between the energy utilization and the environment protection and promote the development of the coal utilization theories and technologies.

英文关键词： Coal gasification; Hydrogen; Mercury;Entrained flow bed