 |
Originally developed by E.I. Du Pont de Nemours,
this technology is now used in over 140 applications in over
30 Du Pont plants worldwide. Now marketed by Monsanto Enviro-Chem
Systems under licence to Du Pont, Monsanto have installed
over 160 systems in a variety of applications worldwide.
The
heart of the technology is the reverse jet, wherein the scrubbing
liquid is injected counter-current to the gas stream
in an open duct. The correct selection of gas and liquid
flow rates and velocities results in the formation of an
extremely turbulent "froth zone" where the liquid
meets the gas stream. This provides highly efficient scrubbing
in a non-clogging environment.
This
provides the following advantages:
- High efficiency gas absorption
and particle removal from very dirty gases
- The ability to
handle gases containing sticky solids
- The ability to scrub
with high strength slurries such as lime or magnesium hydroxide
- High
efficiency fine particle removal
- Minimized maintenance requirements
from having no internal components
Reference
List
Monsanto Enviro-Chem DynaWave© ENGINEERED
SCRUBBING SYSTEMS
Date of
Award |
Company
Location |
Startup
Date |
Exit Gas
Am3/h
|
Application |
System Configuration |
| 1/02 |
Daye China |
6/03 |
184,000 |
Metallurgical sulfuric acid plant
Gas cleaning for smelter |
RJ>CT>RJ>RJ |
| 1/02 |
Phillips Petroleum
Washington |
11/03 |
5,600 |
Refinery offgas
SO2 removal using caustic |
RJ>RJ |
| 12/01 |
Umicore Belgium |
08/02 |
65,000 |
Tail gas metallurgical sulfuric acid plant
SO2 scrubbing with ZnO |
RJ |
| 12/01 |
Indogulf India |
12/02 |
167,000 |
Metallurgical sulfuric acid plant. Gas cleaning for
copper smelter. |
RJ>CT>RJ>RJ |
| 11/01 |
Thai Caprolactam Thailand |
11/02 |
25,000 |
Sulfur burning sulfuric acid plant, Quench |
RJ |
| 10/01 |
CPC Taiwan |
10/02 |
7,000 |
Spent sulfuric acid plant
Gas cleaning for new plant |
RJ>CT>RJ |
| 8/01 |
Aventis China |
6/02 |
15,300 |
Liquid waste incinerator
SO2, HCI, HF & HBr removal using caustic and soluble
salt removal |
RJ>RJ>MME |
| 8/01 |
Repsol Spain |
9/02 |
97,000 |
Incinerator on acrylonitrile plant
SO2 removal using caustic and particulate removal |
RJ>CT>RJ>RJ>RJ>MME |
| 8/01 |
Guixi Smelter China |
6/02 |
226,000 |
Metallurgical sulfuric acid plant
Gas cleaning copper smelter |
RJ>CT>RJ |
| 6/01 |
Police Poland |
7/02 |
48,000 |
TiO2 production via sulphate route
SO2 and SO3 removal with caustic
and dust removal |
RJ>RJ>MME |
| 5/01 |
Kerr McGeeMississippi |
3/02 |
21,000 |
TiO2 production
Chlorine removal using caustic |
PC |
| 5/01 |
Kerr McGee Georgia |
3/02 |
10,500 |
TiO2 production
Particulate, HCl and CI2 removal |
RJ>RJ>RJ>PC |
| 5/01 |
Tiwest Australia |
12/01 |
10,200 |
TiO2 production
Particulate, HCl and CI2 removal |
RJ>RJ>RJ>RJ |
| 4/01 |
Kynochem South Africa |
8/01 |
42,000 |
Tail gas scrubbing for sulfuric acid plant SO2 removal
with caustic |
RJ>RJ |
| 1/01 |
Tongling China |
6/01 |
63,000 |
Tail gas scrubbing for sulfuric acid plant
SO2 removal with lime |
RJ>RJ |
| 12/00 |
Huntsman Tioxide United Kingdom |
4/02 |
5,000 |
TiO2 production via chlorine route
HCI removal using water |
RJ>RJ>(PC)>(V)>MME |
| 12/00 |
Stamag Germany |
7/01 |
38,000 |
Fire extinguisher facility
SO2, HCI and HF removal with caustic and soot removal |
RJ |
| 12/00 |
Advanced Chemical Japan |
6/01 |
13,400 |
Sulfuric acid plant
Particulate removal |
RJ |
| 12/00 |
LG Nikko Korea |
11/02 |
182,000 |
Metallurgical sulfuric acid plant
Gas cleaning copper smelter |
RJ>CT>RJ>RJ |
|
Case
History
Hlsmelt Corporation
Ltd, Flue Gas Desulphurisation Plant
| Location |
|
Kwinana WA |
| Completion Date |
|
2003 |
| Project Duration |
|
12 months |
Environmental Group Scope
of Work:
Full design process,
mechanical, structural, E&I and piping
of a Flue Gas Desulphurisation plant including
supply of key components.
The FGD plant also produces a reusable
byproduct, producing commercial grade gypsum.
| Equipment Supplied: |
|
 Dynawave scrubbing
vessel, 8m dia. x 20m high. Largest FRP vessel
built in Australia.- FRP exhaust stack, 3.3m
dia., total height 60m above ground.
- Lime
Slurry System including storage silo, vent
filter, feeders, mixing tanks & agitators
- Oxidation
air reactor, 5.3m dia tank, with 185kW motor
drive.
- Slurry Dewatering
Plant including hydroclone bank, horizontal
belt filter, vacuum, process
pumps & tanks.
- Slurry recirculation pumps
various sizes up to 215kW motors.
- Rubber lined
steel storage tanks. 100, 50 & 5m3.
- Detailed
fabrication drawings for structural steelwork
superstructure, including access
stairs and platforms.
- Detailed piping isometrics
and pipe support details.
- Valve and instrument
datasheets & schedules.
- Detailed functional
control specification for programming.
|
|
| Design specifications: |
|
|
|
|
450 000 Nm3/hr |
|
|
|
800 ppmv |
|
|
|
less than 10 g/s |
|
|
|
max. 10% free water, 95%
calcium sulphite
conversion to calcium sulphate. |
|
|
| |
