Naptha Hydro- Desulphurization
Stretford Sulfur Recovery
Catalytic Rich Gas (CRG)
Synthetic Natural Gas Plant
The SNG facility was
constructed in 1977 but has seen very little operational activity.
The SNG Facility employs the British Gas
hydro gasification process to convert naptha feedstock into SNG at a
design rate of 60,000 decatherms per day, and was constructed by Foster
Wheeler Energy Corporation. The principle areas of the plant that
are offered for sale are as follows:
Stretford Sulfur Recovery
The bulk of the sulfur in
the plant naptha feed is removed in the hydrodesulphurization (HDS)
unit, the sweet naptha going to the SNG unit and the sulfur leaving the HDS unit as H2S in the sour gas purge. The sour gas, composed of mainly
light hydrocarbons, is burnt in the plant fuel system. In order to
reduce pollution of the atmosphere by combustion products to an absolute
minimum, the H2S is removed from the sour gas before combustion, by
the Stretford Process.
The Stretford Process was developed by the North Western Gas
Board, now part of the British Gas Corporation, who license the
process. The Stretford Process for H2S removal is by
continuous liquid washing using an adequate alkaline solution
containing dyestuff intermediates. The H2S+O is converted
to elemental sulfur, which is separated from the solution,
washed to remove the solution from the sulfur cake, and
stored ready for disposal. The Stretford Unit
that we are offering is designed to treat 78.71 lb. mol/hr of
sour gas containing up to 7.34 lb. mols of H2S and to reduce the
H2S content of the sweet gas to less than 1 vppm.
Alternatively, the unit can treat 148.92 lb. mols/hr of sour gas
containing up to 1.84 lb. mols H2S.
process employs the British Gas hydro gasification concept.
Full capacity standby reactors are available for the first stage
(CRG) reactor and the second (hydro gasification) reactor.
Supplemental equipment is available for shut down and start up
operations and for catalyst reductions. Hydrogen is
produced in the CRG section by combining rich gas or natural gas
with superheated steam over nickel catalyst beds in a hydrogen
reformer which has a capacity of 5.9 MMSCFD of
hydrogen. A Benfield hot potassium carbonate process
accomplishes CO2 removal. A
PSA purification skid is
available for this H2 plant
that elevates H2 purity to 99.9% or higher, if desired.
Process & Instrumentation Drawings
download Data Reports and Tank Sketches you will need the free Adobe
viewing you can right click the links and save them to your computer.
Call Our Sales
Department at 800-682-0181
Plant Acquisitions || Specialized
Services || Engineering &
ASME Storage || Energy