Sulfation and reactivation characteristics of nine limestones

被引：145

作者：

Laursen, K ^{[1
]}

Duo, W ^{[1
]}

Grace, JR ^{[1
]}

Lim, J ^{[1
]}

机构：

[1] Univ British Columbia, Dept Chem & Bio Resource Engn, Vancouver, BC V6T 1Z4, Canada

来源：

FUEL | 2000年 / 79卷 / 02期

关键词：

limestone; sulfation; hydration;

D O I：

10.1016/S0016-2361(99)00147-7

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：

The sulfation and steam hydration reactivation characteristics of nine limestones were evaluated based on laboratory sulfation and hydration rests and scanning electron microscope analyses. The calcium utilization and the sulfation pattern of the limestones were found to depend on the morphology and microstructure of the calcined limestones. Three sulfation patterns were observed in the limestones: unreacted core, uniformly sulfated and network. The steam hydration behavior of the sulfated limestones was dependent on the sulfation pattern. Unreacted core particles appeared to be easier to reactivate, thereby giving higher overall calcium utilization, compared to network-sulfated particles. Uniformly sulfated particles did not react upon hydration and could not be reactivated with steam at 250 or 450 degrees C. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：153 / 163

页数：11

共 19 条

[1] A new mechanism for FBC agglomeration and fouling in 100 percent firing of petroleum coke [J].

Anthony, EJ ;

Iribarne, AP ;

Iribarne, JV .

JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME, 1997, 119 (01) :55-61

[2] Agglomeration and fouling in petroleum coke-fired FBC boilers [J].

Anthony, EJ ;

Preto, F ;

Jia, L ;

Iribarne, JV .

JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME, 1998, 120 (04) :285-292

[3] AN INVESTIGATION OF PRODUCT-LAYER DIFFUSIVITY FOR CAO SULFATION [J].

BORGWARDT, RH ;

BRUCE, KR ;

BLAKE, J .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1987, 26 (10) :1993-1998

[4]

BURWELL SM, P 13 INT FLUID BED C, V1137, P95

[5] REACTIVATION OF PARTIALLY-SULFATED LIMESTONE PARTICLES FROM A CFB COMBUSTOR BY HYDRATION [J].

COUTURIER, MF ;

MARQUIS, DL ;

STEWARD, FR ;

VOLMERANGE, Y .

CANADIAN JOURNAL OF CHEMICAL ENGINEERING, 1994, 72 (01) :91-97

[6] HIGH-TEMPERATURE REACTION BETWEEN SULFUR-DIOXIDE AND LIMESTONE .3. A GRAIN MICROGRAIN MODEL AND ITS VERIFICATION [J].

DAMJOHANSEN, K ;

HANSEN, PFB ;

OSTERGAARD, K .

CHEMICAL ENGINEERING SCIENCE, 1991, 46 (03) :847-853

[7]

DAMJOHN K, 1987, THESIS TU DENMARK DE

[8] FORMATION OF PRODUCT LAYERS IN SOLID-GAS REACTIONS FOR REMOVAL OF ACID GASES [J].

DUO, W ;

SEVILL, JPK ;

KIRKBY, NF ;

CLIFT, R .

CHEMICAL ENGINEERING SCIENCE, 1994, 49 (24A) :4429-4442

[9]

HANSEN PF, 1991, THESIS TU DENMARK

[10] REACTION OF SULFUR-DIOXIDE WITH LIMESTONE AND INFLUENCE OF PORE STRUCTURE [J].

HARTMAN, M ;

COUGHLIN, RW .

INDUSTRIAL & ENGINEERING CHEMISTRY PROCESS DESIGN AND DEVELOPMENT, 1974, 13 (03) :248-253

← 1 2 →