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COMART S.A. capabilities and expertise covers a wide range of process technologies


Slug catchers
2/3-phase separators/coalescers desanding

Production separation is required to separate produced oil, natural gas and associated water streams to be fed to downstream treatment unit. "COMART S.A." process technology can provide design of any separation equipment which may be required in Oil & Gas and Chemical plants. Design may include Computation Fluid Dynamic (CFD) of the separator in both steady and dynamic conditions. Dynamic CFD is particularly useful in some specific application like process equipment operating on FPSO’s or slug catchers.

"COMART S.A." can design standard slug catcher units of the following type:
• single/double barrel;
• finger type.

Moreover, "COMART S.A." can design special slug catcher solutions based on its know-how and specific project separation requirements.

"COMART S.A." can fully design production separation systems and or fully skidded and equipped production separation or well testing units, including (but not limited to):
• Horizontal/Vertical 2-phase/3-phase separators;
• Desenders and Cyclones;
• Filter Separators (coalescers).

Design or selection of separator internals in accurately developed by our process engineers so to be optimized and customized in accordance to end-user production and operation requirements.
Well testing units can be design for easy transportation, deployment and connections, and completed with all necessary local utility, control and analysis equipment.


Emulsion heater treaters
Electrostatic separators

Very often, salt and free water traces present in the produced crude need to be fine removed to allow correct storage and transportation. This operation can be complicated by possible high viscosity of the oil (which can be source of oil-water emulsions) and presence of solids (sand) in the process stream which may tend to clog the process equipment.

"COMART S.A." can provide adequate design for desalting and dehydration systems for any type of oil, by selecting and calibrating oil chemical disemulsifier injection, heat treatment and electrostatic separation.

Separators may be designed with desending system, if required. On request, treaters can be equipped with direct fired heater according to API std.12L or indirect heater (e.g. according to API std.12K), integrated with special internal designed according to "COMART S.A." know-how.


Crude/HC condensate stabilizer

"COMART S.A." has deep knowledge in design of stabilization and fractionation of different type of hydrocarbon mixture including:
• Stabilizers of Crude Oil/HC Condensate;
• De-Ethanizers, De-Propanizers/LPG columns, De-Butanizers;
• Fractionation purifiers (e.g. purification of ethylene and propylene).

Different type of internals can be selected/designed depending on specific process and product requirements and on operation/maintenance contingencies (e.g. scaling service).


Oil coalescers/skimmers


Production/waste water treatment
Reinjection treatment, filtering and pumping


MEG/DEG regeneration
Primary and secondary salt removal from rich MEG/DEG

"COMART S.A." has deep knowledge in design of regeneration unit of MEG/DEG, used as hydrate suppressor to prevent hydrate formation, with particular attention and specific know-how to the salt removal from the rich glycol.


Amine sweetening (bulk or selective)

Gas sweetening for removal of carbon dioxide, hydrogen sulfide and mercaptanes represents a very important and strong expertise of "COMART S.A.".

"COMART S.A." can provide tailor-made and optimized gas sweetening solutions based on one or combination of the following technologies:
• Amine sweetening;
• Membrane purification;
• Molecular sieve adsorption.

Amine Absorption and Regeneration
Amines can be used for sweetening targeted to both bulk absorption of all acid compunds and selective absorption of some specific components.
"COMART S.A." can provide full solutions for bulk and selective sweetening, and for purified gas specification suitable for any downstream service, from transportation spec only, to gas liquefaction process.
For bulk absorption conventional amines such as DEA, MDEA, DGA and DIPA or activated amines (e.g. aMDEA) can be selected depending on specific operating conditions, required/requested treated gas specification and evaluation of contingent capital and operating cost of the proposed unit.
For selective absorption (i.e. removal of sulfur compounds with minimized adsorption of carbon dioxide) MDEA amine or other MDEA based formulated amines can be used. Specific design of amine towers is provided according to "COMART S.A." know-how.
Depending on the selected amine process, amine reclaiming units can be aincluded (i.e. HSS removal unit or amine boil-off reclaimer).
For any amine process, "COMART S.A." can provide fully engineered solutions of main and ancillary equipment/systems, and all needed utilities.

Molecular sieve sweetening

Chemical Solvent Advantages
• Capability to reduce H2S and CO2 to ppm levels;
• Relatively insensitive to H2S and CO2 partial pressure ;
• Selectivity of H2S over CO2 (MDEA).

Chemical Solvent Disadvantages
• High energy requirements for regeneration of solvent;
• Amine are in a water solution, and thus the treated gas leaves saturated with water;
• Possibility of degradation, foaming, corrosion.

Membrane separation

When concentration of acid compounds in raw gas feed stream is relatively high, membranes can be used for bulk removal of these compounds. Compared to other technologies, membrane units can widely reduce the operating/energy consumption cost for mass unit of acid gas removed if compared with other separation processes.
Membrane process units can be used as a stand-alone solution in case requested residual acid gas concentration is not very low (i.e. from some molar percent down to some hundreds of ppms) or in conjuncition with downstream amine or molecular sieve units, in order to reduce treatment energy consumption costs, if deep purification is needed.
"COMART S.A." can design fully skided solutions for membrane separation, based on mambrane cartidges trains which can be procured from main membrane producers. Depending on raw gas feed pressure or need for multi-stage menbrane unit configuration, gas compression may be added to the membrane treatment system. In this case, entire compression and permeate recycle system can be designed by "COMART S.A." to optimize capital investment and treatment energy consumption.

Membrane Advantages
• Low investment and operation costs;
• Operation simplicity and high reliability;
• Installation activities minimized;
• Good weight and space efficiency;
• No chemicals needed;
• High turndown;
• Low energy required (on single stage arrangement).

Membrane Disadvantages
• Pre-treatment requirement;
• Necessity of re-compression for high recovery rates.


"COMART S.A." provided from feasibility to detailed design of these processes in cooperation with possible relevant licensors; when elemental sulfur is desired as product, Claus based process, with possible patented variants depending on specific process environment, or other Redox patented processes are the possible solutions proposed.“COMART S.A.” could provide also the design for incineration and washing of flue gas in order to recover the generated sulfur oxides.


Glycol dehydration

The most frequently used dehydration method is based on glycol absorption (often Tri-Ethylene Glycol). Gas is dehydrated by means of dry glycol stream inside dedicated absorption tower. Wet gas from contactor is regenerated to remove its water content down to required lean glycol specification. "COMART S.A." can provide full design of dehydration cycle process with all possible variant which may be necessary depending on contingent process conditions and dry product specifications.

Glycol Advantages
• Low initial investements;
• Continuous operation;
• Low pressure drop across the contactor;
• Easy glycol makeup.

Glycol Disadvantages
• Low dew-point require stripping gas;
• Foaming possible occurrence;
• Solubility in glycols of aromatic hydrocarbon;
• Glycol oxidation or thermal degradation.

Molecular sieve dehydration

When extreme gas purification/dehydration is required/requested, molecular sieve treatment is the treatment to be used. For example, dehydration and acid/sulfur compound fine removal by adsorption on molecular sieve beds is the most used solution upstream of cryogenic liquefaction gas systems. "COMART S.A." design for molecular sieve systems is targeted to obtain the maximum profitability by finding the correct compromise between equipment capital cost and energy costs needed for sieve bed regeneration.

Solid Dessiccants Advantages
• Very low dew point achievable;
• Adaptability to changes in pressure, temperature and flow on the feed gas;
• Less susceptible to corrosion of foaming than glycol;
• Easy to operate.

Solid Dessiccants Disadvantages
• Capital costs and pressure drop higher than glycol;
• High space and weight requirement;
• High thermal energy requirement for regeneration;
• Hydrothermal possible damage occurrence;
• Sensitivity to poisoning by contaminants of the gas.


Monomers purification systems
CO2 purification / recovery systems
CO2 removal systems

A fundamental step in many chemical processes is PURIFICATION of plant feeds from pollutants which can deactivate reactor catalysts or have other negative impacts on process results.
This task may be particularly challenging when allowable level of residual pollutants is extremely low, down to few ppm or ppb. For this reason particular purification solutions have been developed such as specialized adsorbents, catalytic chemical conversion and cryogenic fractionation.

"COMART S.A." has developed its own specific know-how for purification of polymerization (monomers) and other petrochemical process plant feeds (including CO2 purification).
The use of specific adsorbents offer broad possibilities of applications in refining, petrochemical, chemical and gas processing and they are specifically manufactured for the contaminants removal. They feature a very high selectivity toward polar molecules and a high adsorption capacity especially at very low concentration of contaminants.
The main impurities treated by adsorption technology are:
• H2S;
• CO2;
• COS;
• CS2;
• Sulfur (mercaptans, disulfides);
• Oxygenates (Ketones, alcohols, ethers, aldehydes, peroxides);
• Nitrogen compound (ammoniac, acetonitrile, propionitrile);
• Aromatics;
• Water;
• Chlorides.

A particular application achievable by adsorbents/catalysts technology is the removal of mercury or arsenic. Those contaminants need to be removed in order to avoid corrosion phenomena, poisoning of catalysts and to comply with increasingly stringent environmental requirements. The mercury removal is typically required from LPG, condensate, naphtha and natural gas for criogenic equipment.


LNG units
LPG units

"COMART S.A." can provide design and services for different type of liquefied gas units. The basic process of some of these unit may be patented. In this case, “COMART S.A.” is used to cooperating with the relevant licensor.The following is a list of the main process units related to liquefied gas which be developed:
• LNG (common process scheme, not licensed);
• LNG (special process scheme, licensed);
• LPG/butane liquefaction/fractionation;
• Regasification (LNG/LPG).

All these units can be design together with all needed feed pretreatments, utilities, storage and transfer/loading facilities.


Heavy hydrocarbon adsorption and recovery
Low temperature separation (LTS)

Quite often removal/recovery from gas of hydrocarbon having high/medium molecular weight is a process need due to different reasons (e.g. removal of heavy hydrocarbons upstream of membrane or MS treatments, control of HC dewpoint, recovery of high value hydrocarbon fraction like LPG, butane, light condensates, etc.). For this problems "COMART S.A." has a wide range of solutions, the main of which are:
• Low Temperature Separation;
• Alumina/Silica Gel Adsorption.

Different solutions are also available for recovery of HC vapors from vents/waste streams (i.e. Vapor Recovery Units).


PSA/VSA cycles
Membrane separation
Cryogenic fractionation

A particular branch of "COMART S.A." expertise is the production of those technical gas which are used as utilities and/or pure process feeds. In particular, the attention of "COMART S.A." is focalized on processes for production of NITROGEN and OXYGEN from air separation.
The best process for production of these gasses is selected on the base of several parameters including production capacity, required purity, possible need for cryogenic product storage, etc.
Thus, the possible options are:
• PSA / VSA cycles;
• Membrane Separation;
• Cryogenic Fractionation.

"COMART S.A." can so design this units, including relevant compression and transfer system and air pre-treatments.


Heating medium systems (hot oil, steam, hot water)
Refrigeration systems (chiller units, cooling water systems, evaporative coolers)
Fuel treatment and distribution systems
Power generation and electrical distribution systems
Combined cycles
Utility water systems
Waste water treatment and disposal
Flue gas/vapor treatments
Waste fluid incineration
Storage, transfer, metering and reducing systems

"COMART S.A." include or provide optimized design for any utility system or auxiliary system which may be required in industrial plants (new system or revamping), from simple to extremely complex systems/networks.

COMART S.A. - "Solutions through excellence"


engineering and consulting company

Oil & Gas

Technology selection
FEED & detail design
Site assistance

Flexible approach to engineering & management
Savings orientated construction costs
Skilled personnel
Fast-track project expertise
International appreciation
Safety and operabilty know-how

Responding flexibly and quickly to different client’s requirements, during every phase of the design/realization
Always offering the best solution to maximize the benefits for capex or operational costs
Always pursuing the maximum competitiveness in the observance of international standards or those required by customers
Always ensuring compliance with the time schedule agreed upon
Capability and competitiveness in managing small projects up to large and complex systems


capabilities and expertise covers a wide range of process technologies.

  • All
  • Separation
  • Dehydration
  • Sweetening
  • Purification
  • Liquefied Gas
  • Technical gas


Slug catchers
2/3-phase separators/coalescers Desanding


Emulsion heater treaters
Electrostatic separators
Glycol dehydration
Molecular sieve dehydration


Amine sweetening (bulk or selective)
Molecular sieve sweetening
Membrane separation


Monomers purification systems
CO2 purification / recovery systems
CO2 removal systems

Liquefied Gas

LNG units
LPG units

Technical gas

PSA/VSA cycles
Membrane separation
Cryogenic fractionation


Discover as COMART S.A. helps its customers.

Advanced process simulation analysis

Advanced process simulation analysis

Computational Fluid Dynamics analysis

Computational fluid dynamics analysis

Linear and Non Linear Finite Elements analysis

Linear and non linear finite elements analysis

Laser Scanning technologies

Laser scanning technologies