低品質煤大規模提質利用的基礎研究立項報告

劉炯天 朱書全 張明旭 趙躍民 王智化

摘 要：低品質煤是指礦物、硫、水等雜質含量高的煤炭或煤炭分選產品，無論它是什么樣的煤階與煤種，都由于高含雜而利用效率極低甚至無法利用。煤炭是我國的主體能源，約占一次能源消費量的70%，然而我國煤炭資源稟賦條件差，低品質煤資源約占煤炭資源總量的40%。因此，這部分資源的大規模提質利用對于實現我國以煤為主的能源持續供給，保障經濟快速持續發展具有重大戰略意義。低品質煤提質是指利用物理和化學方法脫除其中礦物、硫和水等雜質，使之成為可有效利用的燃料或高品質原料。但是，由于對低品質煤中礦物、硫、水等雜質的賦存狀態、復雜的體相結構和界面環境認識不夠，對低品質煤提質利用的多相多尺度動力學機制與工程基礎研究不足，嚴重制約了我國低品質煤資源的大規模開發。該報告圍繞以下3個科學問題開展研究：（1）低品質煤中礦物、硫、水等雜質的賦存形態及化學和物理作用；（2）雜質組分脫除的能量作用機制和界面調控；（3）低品質煤大規模提質利用的流態化基礎與過程動力學。總體研究目標是：針對我國低品質煤大規模開發的重大需求，研究煤中礦物、硫、水等雜質的賦存化學與物理，揭示雜質組分脫除的化學物理響應和界面調控規律，構建以穩定流態化與非均衡分離過程為特征的低品質煤大規模提質的工程基礎，提出提質煤的燃燒、氣化等高效利用途徑與方法，形成我國低品質煤提質利用的理論體系與技術突破。

關鍵詞：低品質煤 大規模 提質

Basic Research of Large-scale Quality Improvement and Utilization of Low-quality Coal

Liu Jiongtian1 Zhu Shuquan2 Zhang Mingxu3 Zhao Yuemin1 Wang Zhihua4

（1.China University of Mining and Technology；2.China University of Mining & Technology，Beijing；3.Anhui University Of Science & Technology；

4.Zhejiang University）

Abstract：Low-quality coal refers to raw coal or coal-washing products containing high Impurities like minerals， Sulfur and moisture etc. Whichever stages or kinds it belongs to， these impurities deteriorate， sometimes even clear its efficiency. Coal donates our countrys energy systems for 70 percentages of Primary energy consumed. In 2010， Chinese coal production exceeds 3.2 billion tons and makes up for 45 percentages of the whole global coal production. Nonetheless， natural Chinese coal is poor with the low-quality coal making up for 40 percentages of the whole coal reserves. Therefore， upgrading of this portion has a great strategic significance to sustainable energy supplement and high economic development since coal donates Chinese energy. Low-quality coal upgrading is a technology of removing Impurities like minerals， sulfur， moisture in coal and transforming it to useful fuel or high-quality raw material. However， since we dont get a good knowledge of the occurrence， bulk structure and interface environment of these impurities， the kinetic mechanism Engineering Foundation multiphase multiscale Kinetic mechanism. All this restrict Large-scale development of low-quality coal.The project will be studied around three issues as follows：（1）Occurrence and chemical and physical effects of Impurities like minerals， sulfur and moisture in low-quality coal.（2）The Energy mechanism and interface control of removing impurities.（3）Fluidization base and kinetics of large-scale upgrading to low quality coal. Stemming from the significant demand in large scale development of low quality coal， this project studies occurrence and chemical and physical effects of Impurities like minerals， sulfur and moisture in low quality coal. Reveals the Interface control law and Chemical and physical response to remove impurities， builds the Engineering Foundation of large scale upgrading to low quality coal characterized by Stable fluidization and non-equilibrium separation. Put forth the efficient way to use upgraded coal like Combustion Gasification etc. finally reaches a theoretical system of low quality upgrading and technology breakthrough. This is the overall aim of this project.

Key Words：Low-quality Coal； Large-scale； Quality Improvement

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