Chemical Compositional Analysis of Catalytic Hydroconversion Products of Heishan Coal Liquefaction Residue.

Xiaoming Yue,Yajun Wu,Xianyong Wei,Shuangquan Zhang,Xiaoqin Yang

doi:10.1155/2017/4303596

Abstract

Liquefaction residue of Heishan bituminous coal (HLR) was subject to two hydroconversion reactions under 5 MPa initial pressure of hydrogen at 300°C for 3 h, without catalyst and with acid supported catalyst (ASC), respectively. The reaction products were analyzed with gas chromatography/mass spectrometer (GC/MS). The results show that 222 organic compounds were detected totally in the products and they can be divided into alkanes, aromatic hydrocarbons (AHCs), phenols, ketones, ethers, and other species (OSs). The yield of hydroconversion over the ASC is much higher than that without catalyst. The most abundant products are aromatic hydrocarbons in the reaction products from both catalytic and noncatalytic reactions of HLR. The yield of aromatic hydrocarbons in the reaction product from hydroconversion with the ACS is considerably higher than that from hydroconversion without a catalyst.

Highlights

Direct coal liquefaction is a significant process for transforming coal to liquid fuel and chemicals, in which considerable coal liquefaction residue (CLR) is generated
The appearance of C-Cl bonds at 769 cm−1 in acid supported catalyst (ASC) indicates that the reaction of SbCl5 with the Activated carbon (AC) was carried out during the process of ASC preparation [16, 17]
Organic compounds of the reaction product from RPNC and RPC detected by gas chromatography/mass spectrometer (GC/MS) include alkanes, aromatic hydrocarbons (AHCs), phenols, ketones, ethers, and other species (OSs)

Summary

Introduction

Direct coal liquefaction is a significant process for transforming coal to liquid fuel and chemicals, in which considerable coal liquefaction residue (CLR) is generated. The residue obtained by the process of direct liquefaction is about 30 wt%. Of raw coal [1]. It is important to find a way to utilize the CLR efficiently for improving the economy of coal utilization. CLR still retains part of organic macromolecular structure such as aromatic hydrocarbons together with the unreacted coal, the minerals from coal, and the liquefaction catalyst [2,3,4,5,6]. Obtaining more information on the molecular structure of CLR as well as getting more soluble fraction from

Methods

Results

Conclusion