1. NEW PROCESS OF SOUR GAS SWEETENED
PATENT TRADEMARK
Our process for the treatment of " contaminated gas / sour gas / acid
gas " , is based on the use of " strong alkaline sequestrate reactive"
Sodium Hydroxide (NaOH ) in dilute solution, which acts as a
" scavenger and neutralizing " of contaminants from natural gas.
The neutralizing solution is contacted countercurrently with the
acid gas.
Process equipment , uses " COLUMNS " filler with Fill material – pall
rings -, who have high surface areas, because of which, is possible
to design small-diameter columns.
During the designing contact time, the following contaminants that
may accompany the " sour Gas" will be neutralized :
SH2 (hydrogen sulfide)
CO2 (Carbon dioxide)
SHxRy (mercaptans)
COS (Carbonyl sulfide)
CS2 (Carbon disulphide)

2. CHEMISTRY OF NEW PROCESS FOR SOUR GAS
TREATMENT
The chemical reaction that occurs during counter current gas –
liquid contact, produces neutralization salts with " THE pH
REGULATORY characteristics " named BUFFER salts .
The salts produced are ;
Sodium hydrogen sulfide and sodium sulfide
Sodium bicarbonate and sodium carbonate
The amount present of each ones, defines the pH of the liquid
buffer solution, effluent from the process.
Our new process , ensures you get :
. ) Sweetened natural gas.
. ) Liquid effluent no Contaminant of the environment, and able
to applicate in Kraft cellulose Pulp, and others industries.
. ) Low pressure loss.
In case of high percent of CO2 treatment, our process use close
cycle for caustic chemical recovery , NaOH.

3. SCALE APPLICATION PROCESS SUBMITTED
Hydrogen sulfide is slightly soluble in its acid form , and its
dissociation constant is small.
Carbon dioxide has a pressure dependent solubility of the gas in
its way.
This new process resolve both problems as follows:
1) Applies internal high contact areas.
2) Use a strong "base" in order to increase the solubility of both
gases because the salts formed.
3) Using the properties by Henderson- Hasselbach ,reacting
weak acids vs strong bases, the goal is " clean environment “ by
pH control.
4) The good technical implementation of the above properties
permits:
a) TREAT ALL RANGE OF GAS FLOW.
b) SCALABLE PLANT available to the wellhead, battery, and / or
treatments of large flows in central plant .

4. NEW PROCESS OF SOUR GAS TREATMENT
SH2 and CO2 CONTAMINANTS
28 “
CAUSTIC
SOLUTION
FI
PI
LCILCI
FI
LCI
pH
SOUR GAS
SH2 X ppm
CO2 Low %
28 “
SWEET
GAS
PI
CAUSTIC
And
BUFFER
SOLUTION
BUFFER
pH = 8 a 10
LCI

5. INTERNAL TOWERS SWEETENED
SH2 and CO2 CONTAMINANTS
A B
CUT AB
D
D/
4
DEMISTERDEMISTER
PALL
RINGS
11/2
inches
PALL
RINGS
11/2
inches

6. NEW SOUR GAS TREATMENT PROCESS - CLOSE CYCLE
SOUR GAS
CO2 HIGH %
PROCESS PLANT
FLOW DIAGRAM
SWEET
NATURAL GAS
CAUSTICISATION
REACTIONBUFFER
SALTSTO
CLOSE
TREATMENT
LIME
FURNACE
CO3Ca
OCa
CAUSTIC
SOLUTIO
N OF
NaOH
CO2

7. NEW SOUR GAS TREATMENT PROCESS - CLOSE CYCLE
SOUR GAS
CO2 HIGH %
PROCESS PLANT
FLOW DIAGRAM
SWEET
NATURAL GAS
CAUSTICISATION
REACTIONBUFFER
SALTSTO
CLOSE
TREATMENT
LIME
FURNACE
CO3Ca
OCa
CAUSTIC
SOLUTIO
N OF
NaOH
CO2