A two-step acid mercury removal process for pulverized coal

被引：13

作者：

Hoffart, A

Seames, W

Kozliak, E

Riedinger, S

Francini, J

Carlson, C

机构：

[1] Univ N Dakota, Dept Chem Engn, Grand Forks, ND 58202 USA

[2] Univ N Dakota, Dept Chem, Grand Forks, ND 58202 USA

来源：

FUEL | 2006年 / 85卷 / 09期

基金：

美国国家科学基金会;

关键词：

coal cleaning; mercury; leaching;

D O I：

10.1016/j.fuel.2005.11.020

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A correlation predicting the effectiveness of a two-step acid wash coal cleaning protocol using sequential leaching of mercury from the coal was developed and the effectiveness of the two-step wash procedure was then determined for two bituminous coals. Increasing the hydrochloric acid concentration and temperature in the USGS four stage sequential leaching protocol increased the amount of mercury leached during the HCI step. Using these revised conditions, sequential leaching was then shown to correspond to the mercury removals achieved in the two-step wash method. Mercury removal rates of 50-70% were realized for the bituminous coals by pre-treating the coal prior to a wash with hot concentrated HCI. C 2005 Elsevier Ltd. All rights reserved.

引用

页码：1166 / 1173

页数：8

共 34 条

[1] ROLE OF COAL CLEANING IN CONTROL OF AIR TOXICS [J].