Gasification of carbonaceous solids
- Provo, UT
A process and apparatus for converting coal and other carbonaceous solids to an intermediate heating value fuel gas or to a synthesis gas. A stream of entrained pulverized coal is fed into the combustion stage of a three-stage gasifier along with a mixture of oxygen and steam at selected pressure and temperature. The products of the combustion stage pass into the second or quench stage where they are partially cooled and further reacted with water and/or steam. Ash is solidified into small particles and the formation of soot is suppressed by water/steam injections in the quench stage. The design of the quench stage prevents slag from solidifying on the walls. The products from the quench stage pass directly into a heat recovery stage where the products pass through the tube, or tubes, of a single-pass, shell and tube heat exchanger and steam is generated on the shell side and utilized for steam feed requirements of the process.
- Research Organization:
- Eyring Research Inst., Provo, Utah (USA)
- DOE Contract Number:
- E(49-18)-1548
- Assignee:
- United States of America as represented by United States Energy (Washington, D. C.)
- Patent Number(s):
- US 3988123
- Application Number:
- 05/605,369
- OSTI ID:
- 862678
- Country of Publication:
- United States
- Language:
- English
Similar Records
Gasification process
Process for gasification and production of by-product superheated steam
Related Subjects
carbonaceous
solids
process
apparatus
converting
coal
intermediate
heating
value
fuel
gas
synthesis
stream
entrained
pulverized
fed
combustion
stage
three-stage
gasifier
mixture
oxygen
steam
selected
pressure
temperature
products
pass
quench
partially
cooled
reacted
water
ash
solidified
particles
formation
soot
suppressed
injections
design
prevents
slag
solidifying
walls
directly
heat
recovery
tube
tubes
single-pass
shell
exchanger
generated
utilized
feed
requirements
tube heat
steam injection
heating value
carbonaceous solid
heat recovery
pulverized coal
fuel gas
heat exchange
heat exchanger
synthesis gas
carbonaceous solids
converting coal
selected pressure
value fuel
partially cooled
intermediate heat
combustion stage
ducts pass
/48/122/252/