劉炯天 朱書全 張明旭 趙躍民 王智化

摘 要：低品質(zhì)煤是指礦物、硫、水等雜質(zhì)含量高的煤炭或煤炭分選產(chǎn)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(fèi)量的70%，然而我國煤炭資源稟賦條件差，低品質(zhì)煤資源約占煤炭資源總量的40%。因此，這部分資源的大規(guī)模提質(zhì)利用對于實(shí)現(xiàn)我國以煤為主的能源持續(xù)供給，保障經(jīng)濟(jì)快速持續(xù)發(fā)展具有重大戰(zhàn)略意義。低品質(zhì)煤提質(zhì)是指利用物理和化學(xué)方法脫除其中礦物、硫和水等雜質(zhì)，使之成為可有效利用的燃料或高品質(zhì)原料。但是，由于對低品質(zhì)煤中礦物、硫、水等雜質(zhì)的賦存狀態(tài)、復(fù)雜的體相結(jié)構(gòu)和界面環(huán)境認(rèn)識不夠，對低品質(zhì)煤提質(zhì)利用的多相多尺度動力學(xué)機(jī)制與工程基礎(chǔ)研究不足，嚴(yán)重制約了我國低品質(zhì)煤資源的大規(guī)模開發(fā)。該報告圍繞以下3個科學(xué)問題開展研究：（1）低品質(zhì)煤中礦物、硫、水等雜質(zhì)的賦存形態(tài)及化學(xué)和物理作用；（2）雜質(zhì)組分脫除的能量作用機(jī)制和界面調(diào)控；（3）低品質(zhì)煤大規(guī)模提質(zhì)利用的流態(tài)化基礎(chǔ)與過程動力學(xué)?？傮w研究目標(biāo)是：針對我國低品質(zhì)煤大規(guī)模開發(fā)的重大需求，研究煤中礦物、硫、水等雜質(zhì)的賦存化學(xué)與物理，揭示雜質(zhì)組分脫除的化學(xué)物理響應(yīng)和界面調(diào)控規(guī)律，構(gòu)建以穩(wěn)定流態(tài)化與非均衡分離過程為特征的低品質(zhì)煤大規(guī)模提質(zhì)的工程基礎(chǔ)，提出提質(zhì)煤的燃燒、氣化等高效利用途徑與方法，形成我國低品質(zhì)煤提質(zhì)利用的理論體系與技術(shù)突破。

關(guān)鍵詞：低品質(zhì)煤 大規(guī)模 提質(zhì)

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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