公开(公告)号：US11434444B2

公开(公告)日：2022-09-06

申请号：US16972396

申请日：2019-06-11

Applicant: China University Of Mining And Technology

Inventor： Bo Zhang ,  Yuemin Zhao ,  Yadong Zhang ,  Guanghui Yan ,  Zhenfu Luo ,  Chenlong Duan ,  Liang Dong ,  Enhui Zhou

IPC: C10L9/08 ,  F26B3/092 ,  F26B3/347

Abstract: The present invention is directed towards a process for upgrading lignite comprising: prior to production pre-assess the calorific value of the coal, by selecting a relational expression between a calorific value of lignite and a degree of metamorphism, a moisture content and an ash content thereof based on a ratio of the ash content to the moisture content, pre-assess the calorific value of the coal; combining a relational expression between a production cost and the ash content and moisture content to make a cost budget; determining degrees of deashing and drying; selecting and implementing a lignite ash reduction pretreatment process; and implementing dry sorting first and then drying. The upgrading process has high sorting efficiency, high drying efficiency and low production cost, and meets the requirement for the surface moisture of the raw coal in the dry sorting operation.

公开(公告)号：US20220379317A1

公开(公告)日：2022-12-01

申请号：US17659225

申请日：2022-04-14

Applicant: China University of Mining and Technology ,  Jiangsu Hydrocarbon Clean Energy TechRschInstCoLtd

Inventor： Bo Zhang ,  Guanghui Yan ,  Zhenxing Zhang ,  Junwei Guo ,  Linsheng Gong ,  Mengyao Guo

IPC: B03B9/00 ,  C10L1/32

Abstract: The present disclosure provides a dehydration and upgrading system for a high-water-content material, including a reaction kettle, a steam generator and a steam recovery apparatus, wherein the steam generator and the steam recovery apparatus are located at left and right sides of the reaction kettle respectively, and are connected through steam pipelines; a pressure sensing device is arranged on the reaction kettle to sense the pressure therein; a feed port is formed at an upper end of the reaction kettle; a discharge port is formed at a lower end of the reaction kettle; a discharge conveying belt is arranged below the discharge port; a high-pressure air pipe is arranged on one side of the middle part of the reaction kettle; and a high-pressure air valve is arranged on the high-pressure air pipe.

公开(公告)号：US20210276018A1

公开(公告)日：2021-09-09

申请号：US17191935

申请日：2021-03-04

Applicant: China University of Mining and Technology

Inventor： Bo Zhang ,  Chenlong Duan ,  Enhui Zhou ,  Guanghui Yan ,  Zengqiang Chen ,  Zhenfu Luo ,  Zhenxing Zhang ,  Guangqing Zhu

IPC: B03B9/02 ,  B07B1/46 ,  B03C1/30 ,  B03B5/34

Abstract: Embodiments of the present disclosure provide a pressurized two-product dense-medium separation process for oil shale, and belongs to the field of oil shale industry, in particular to the processing and utilization of oil shale. This process includes: pre-screening a raw oil shale ore through a 25 mm screen; crushing an oversize product, mixing with an undersize product, and separating by a pressurized two-product dense-medium cyclone; and subjecting an underflow and an overflow of the pressurized two-product dense-medium cyclone to dewatering and medium draining respectively to obtain a concentrate and a tailing. The present disclosure has a simple process flow, high separation efficiency and low energy consumption and can reduce the cost of oil refining and achieve better economic benefits.