In situ visualization of the performance of a supercritical-water salt separator using neutron radiography

被引：54

作者：

Peterson, Andrew A.

Vontobel, Peter

Vogel, Frederic ^{[1
]}

Tester, Jefferson W.

机构：

[1] Paul Scherrer Inst, Villigen, Switzerland

[2] MIT, Dept Chem Engn, Cambridge, MA 02139 USA

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 2008年 / 43卷 / 03期

关键词：

supercritical water; salt; neutron radiography; precipitation;

D O I：

10.1016/j.supflu.2007.08.003

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Salt separation from supercritical water has been identified as a key issue in the deployment of supercrifical -water technologies, particularly in the supercritical-water gasification of biomass. In order to better understand salt separation, neutron radiography has been employed to allow visualization of the transport phenomena associated with the separation of salt from supercritical D2O in a reverse-flow vessel. D2O was used as a surrogate for H2O because of its low neutron-attenuation coefficient and similar physical properties. Salts that formed a brine as a second phase, such as Na2B4O7 and K3PO4, performed well in the separator. Na2SO4, which forms a solid precipitate, created more issues and caused blockage of the separator under certain conditions. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：490 / 499

页数：10

共 26 条

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