Hot water treatment of low rank coal in high temperature and high pressure reactor and its slurry ability

ZHAO Weidong; LIU Jianzhong; ZHOU Junhu; CAO Xiaozhe; ZHANG Guangxue; CEN Kefa

您当前的位置：

首页 >

文章列表页 >

Hot water treatment of low rank coal in high temperature and high pressure reactor and its slurry ability

更新时间：2025-12-10

- Hot water treatment of low rank coal in high temperature and high pressure reactor and its slurry ability
- CIESC Journal Issue 6, Pages: 1560-1567(2009)
- 作者机构：
  
  能源清洁利用国家重点实验室(浙江大学)
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 June 2009，
  
  Published：05 June 2009
- 稿件说明：
移动端阅览
ZHAO Weidong, LIU Jianzhong, ZHOU Junhu, et al. Hot water treatment of low rank coal in high temperature and high pressure reactor and its slurry ability[J]. CIESC Journal, 2009, (6): 1560-1567.
DOI：

ZHAO Weidong, LIU Jianzhong, ZHOU Junhu, et al. Hot water treatment of low rank coal in high temperature and high pressure reactor and its slurry ability[J]. CIESC Journal, 2009, (6): 1560-1567. DOI：

摘要

褐煤、亚烟煤等低阶煤内水、氧含量大，直接制备浆体燃料，成浆浓度低、粘度大、流动性差。通过高温高压对低阶煤进行水热处理(热水反应)，可以在较短时间内提升其煤阶和热值，同时改变其理化特征，进而较大程度提高其成浆浓度。结果表明，热水反应后，小龙潭褐煤最大成浆浓度可以由44.6%(原煤)提高到64.55%；印尼MIP亚烟煤最大成浆浓度则由39.71%(原煤)提高到64.61%。不同反应终温对于热水反应产物的成浆性能改善程度不同，从含氧基团化学分析以及煤水界面接触角两个方面进行了机理探讨。

Abstract

The coal water slurry (CWS) prepared from low rank coals (LRC)

such as lignite or subbituminous coals always has a higher viscosity and poor fluidity while the solid concentration is smaller than high rank coal water slurry.The reason is there are larger inherent moisture and oxygen composition in LRC.Under high temperature and high pressure conditions

LRC was upgraded in hot water in a short time period of an hour.The heating value of LRC was also increased in such a process

and the physical and chemical characteristics of LRC changed meanwhile to improve its slurry ability which meant a higher solid concentration with a lower viscosity.The results showed that after hot water treatments

the maximum solid concentration of Xiaolongtan CWS increased from 44.6% to 64.55%

while that of MIP CWS increased from 39.71% to 64.61%.The improvement of LRC slurry ability depended much on the final temperature of hot water treatments.The mechanism was explained by the chemical analysis of oxygen-containing groups and the measurement of contact angle between coal surface and water.

关键词

Keywords

references

Views

326

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Surface modification of sugar cane bagasse with aluminate ester strengthened by mechanical activation

Energy analysis for transition from Cassie state to Wenzel state

Primary breakup characteristics of air-blast atomization of coal-water slurry

Model and design of through-hole capillary burst valve for capillary driven flow

Properties of fly ash in opposed multi-burner gasifier

Related Author

JIANG Daohai

HU Huayu

WANG Nan

HUANG Zuqiang

WANG Jiadao

SUI Tao

CHEN Darong

LIU Haifeng

Related Institution

广西大学化学化工学院

清华大学精密仪器与机械学系，摩擦学国家重点实验室

华东理工大学煤气化教育部重点实验室

长春光学精密机械与物理研究所应用光学重点实验室

中国科学院研究生院

⁰