The Role of Chemical Reaction Engineering in Coal Gasification

6 The Role of Chemical Reaction Engineering in Coal Gasification

Downloaded by COLUMBIA UNIV on February 16, 2015 | http://pubs.acs.org Publication Date: June 1, 1975 | doi: 10.1021/ba-1975-0148.ch006

HERMAN

F.

FELDMANN

Battelle, Columbus Laboratories, 505 King Ave., Columbus, Ohio 43201

The stoichiometry

and the unit operations

vert coal to a clean gaseous most important pyrolysis,

transformations

are discussed qualitative

as well

various

ring

workers

gasification.

step.

system

overall circuits,

experimental

rate

designs

systems

and analytical control

equaby

bases

to

system are

of these

opti-

described.

use relatively studies

occur-

additional

proposed

are

for work

what is

recommendations

operational

reactions reasonable

than on generating

gasification

are

experimental

more accurately

Gasifier

The

developed

Further

Since most of these reactor

and

of reaction equations

are discussed.

mize the complex flow

Rate

con-

Gross

these

to be a

and the physical

rate equations.

increased

during

are described,

in the complex

gas-solid

steam

occurring

focus on establishing

reaction

design

and

as what appears

each

these equations should

in this conversion

basis for the development

describing

to

described.

occurring

hydrogasification,

physical

tions

reactions

required

fuel are briefly

complex made

for

to simplify

the

reactor

systems.

/ ^ o a l c a n react w i t h steam, c a r b o n d i o x i d e , o r h y d r o g e n t o p r o d u c e ^

gaseous p r o d u c t s t h a t c a n b e u s e d either d i r e c t l y f o r f u e l o r f o r

s y n t h e s i z i n g a v a r i e t y o f other c h e m i c a l c o m p o u n d s .

This

conversion

i n v o l v e s t h e three m a i n reactions l i s t e d b e l o w : C + H 0 C O + H

(Gasification)

(1)

C + C 0 *± 2 C O

(Gasification)

(2)

C + 2 H