Structured multiphase reactors based on fibrous catalysts:: nitrite hydrogenation as a case study

被引：31

作者：

Höller, V ^{[1
]}

Yuranov, I ^{[1
]}

Kiwi-Minsker, L ^{[1
]}

Renken, A ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, LGRC, Swiss Fed Inst Technol, CH-1015 Lausanne, Switzerland

来源：

CATALYSIS TODAY | 2001年 / 69卷 / 1-4期

关键词：

structured catalysts; multistage bubble column; nitrite reduction; hydrodynamics; fibrous materials/packing/fabrics;

D O I：

10.1016/S0920-5861(01)00367-4

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A new reactor concept designed as a bubble column staged with fibrous catalytic layers is tested on pilot-scale for the reduction of nitrite to nitrogen by hydrogen. Carbon dioxide is used to neutralize the hydroxide ions produced during hydrogenation of nitrite. The effective reaction rate was found to depend on the superficial gas velocity u(g0). The fibrous catalysts demonstrated a high selectivity towards nitrogen. The influence of the mass transport on the effective kinetics is discussed and the volumetric liquid-solid mass transfer coefficient k(S)a(S) is estimated as a function of the superficial gas velocity u(g0). The selectivity was found to be independent of the hydrodynamics. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：175 / 181

页数：7

共 19 条

[1]

[Anonymous], 1999, CATALYTIC SCI SERIES

[2]

BAERNS M, 1992, CHEM REAKTIONSTECHNI, P427

[3] Studies on the use of catalytic membranes for reduction of nitrate in drinking water [J].

Daub, K ;

Emig, G ;

Chollier, MJ ;

Callant, M ;

Dittmeyer, R .

CHEMICAL ENGINEERING SCIENCE, 1999, 54 (10) :1577-1582

[4]

DECKWER WD, 1992, BUBBLE COLUMN REACTO, P533

[5]

Hahnlein M, 1998, STUD SURF SCI CATAL, V118, P99

[6] Reduction of nitrite-ions in water over Pd-supported on structured fibrous materials [J].

Höller, V ;

Rådevik, K ;

Yuranov, I ;

Kiwi-Minsker, L ;

Renken, A .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2001, 32 (03) :143-150

[7] Bubble columns staged with structured fibrous catalytic layers:: Residence time distribution and mass transfer [J].

Höller, V ;

Radevik, K ;

Kiwi-Minsker, L ;

Renken, A .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2001, 40 (06) :1575-1579

[8] Fibrous structured catalytic beds for three-phase reaction engineering: Hydrodynamics study in staged bubble columns [J].

Höller, Volker ;

Wegricht, Dagmar ;

Kiwi-Minsker, Lioubov ;

Renken, Albert .

Catalysis Today, 2000, 60 (01) :51-56

[9] Nitrate removal from drinking water - Review [J].

Kapoor, A ;

Viraraghavan, T .

JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE, 1997, 123 (04) :371-380

[10] Supported glass fibers catalysts for novel multi-phase reactor design [J].

Kiwi-Minsker, L ;

Yuranov, I ;

Höller, V ;

Renken, A .

CHEMICAL ENGINEERING SCIENCE, 1999, 54 (21) :4785-4790

← 1 2 →