The environmentally friendly solution for deep desulphurisation of natural gas and associated petroleum gas. R&P Co. Grasys carries out the whole range of works, from the engineering estimate and feasibility study to the supply of the sulphur removal equipment.
Sulphur removal by liquid phase oxidation of hydrogen sulphide with a chelated iron solution is a simple and straightforward solution. In the first stage of the process, the feed gas passes through an aqueous solution of an iron chelate-based catalyst in which hydrogen sulphide interacts with iron ions to form fine elemental sulphur and an iron ion solution. Iron ions have virtually no interaction with the other components of the gas because the catalyst acts selectively on the hydrogen sulphide.
The spent solution is sent to a second oxidation stage where 2Fe+2 iron ions are regenerated with air oxygen. The regenerated solution is returned to the first stage. The core chemical process is technically simple and completely environmentally friendly.
Schematic diagram of a sulphur removal unit for natural gas and associated petroleum gas
High unit reliability and durability
At least 250 sulphur removal units based on this technology have been in operation worldwide for more than 30 years, including in the CIS countries.
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Completely Russian designed, the equipment is cheaper than its foreign counterparts
The sulphur removal units are manufactured at the Grasys production facility. Due to the use of a safe Russian-made catalyst, which is continuously regenerated with atmospheric air, the units have moderate capital costs and low operating costs.
Efficient technology
Guaranteed reduction of hydrogen sulphide content by hundreds or thousands of times over a wide process pressure range from 0.1 MPa to 10 MPa.
Simple and environmentally friendly process to remove hydrogen sulphide from gases
No toxic substances are used or produced in the process. Sulphur removal units convert H2S into elemental recyclable harmless sulphur (sulphur is used as an additive in the production of sulphur-asphalt concrete, or is landfilled).
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Guaranteed reduction of hydrogen sulphide content by hundreds or thousands of times over a wide process pressure range from 0.1 MPa to 10 MPa.
Sulphur removal units convert H2S into elemental recyclable harmless sulphur (sulphur is used as an additive in the production of sulphur-asphalt concrete, or is landfilled).
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You fill out a questionnaire with the desired equipment parameters
Our expert prepares a quotation with the most efficient solutions to your application. Contract to be concluded
We perform engineering, designing, manufacture equipment with its further testing and placing into service, etc
We ship equipment to the operational location and provide a package of documents
We are engaged in start-up operations and equipment commissioning
We provide aftersales service to ensure equipment efficient performance and reliability excellence (optional)
High-tech Russian manufacture
Implementation of import substitution programs
Hands-on experience in implementing over 1600 projects within 20 years
Manufacturing equipment of any size and level of sophistication
Turnkey projects (EPC-contracts)
Prompt technical support
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