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A sulfur recovery unit or SRU converts hydrogen sulfide H2S also known as sour gas or acid gas into sulfur Hydrogen sulfide is a by product of processing natural gas and refining high sulfur crude oil H2S is burned in the reaction furnace and combined with SO2 to create sulfur Petrochemical plants and oil refineries are required to
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3 In sulfur recovery unit people should keep body sideways when opening/closing Valves to prevent from being burnt by steam or sulfur 4 No iron made tools allow when loading/unloading the sulfur to prevent from Sparks which may cause an explosion Transportation of sulfur should abide with regulation for the transportation of hazardous chemicals
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Sulfur Recovery Units Refractory Linings Key Benefits Extremely high creep resistance at high operating temperatures Extended run times Increased thermal shock resistance Resistance to acid corrosion Increased production efficiency Reduced maintenance costs and downtime Did You Know
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In the Claus process sulfur is recovered from H 2 S in Sulfur Recovery Units SRU and can be used for an array of purposes including fertilizer additives Hengye offers multiple variations in its branded SulCat Series of Claus catalysts to suit the needs of our users depending on environmental requirements and feed composition
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The reaction furnace is the heart of the Sulfur Recovery Unit SRU initiating the conversion of H2S and other sulfur bearing compounds to elemental sulfur The feed stream to the reaction furnace is an acid gas containing large quantities of hydrogen sulfide H2S that is typically burned with enough air to oxidize one third 1/3 of the H2S
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5 Process Scheme Modified Claus Process for Sulfur Recovery 6 Principal steps Combustion Step Catalytic Steps 1 Combustion Reaction Furnace Temperature is usually between 1700oF 2500oF Complete combustion of all hydrocarbons present Conversion of 1/3 H2S in feed to SO2 𝑯 𝟐 𝑺 𝟑 𝟐 𝑶 𝟐 → 𝑺𝑶 𝟐 𝑯 𝟐
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The sulphur recovery unit does not make a profit for the operator but it is an essential processing step to allow the overall facility to op erate as the discharge of sulphur compounds to the atmosphere is severely re stricted by environmental regulations Oil and gas producers are attempting to maximise production at minimum cost
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PTI pioneered using electric heaters in small capacity SRUs in the early 2000s Electric heating offers a unique advantage and significant cost savings over traditional SRU designs Talk with one of our engineers 469 629 7232 First name Last name Company name Email address Phone number How can we help you Submit Message
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We are the world leader in the design and construction of sulfur recovery units and related sulfur management facilities Our design to construction experience covers the complete range of sulfur recovery applications Gas/liquid treating systems Sour water strippers Claus sulfur recovery Cold Bed Adsorption CBA Tail gas treating
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If air is replaced with oxygen enriched air or pure oxygen this eliminates the nitrogen ballast also reducing the volume flow through the sulfur recovery unit SRU This means more acid gas can be fed into the system without the need for significant modifications to existing equipment or major changes to the process plant pressure profile
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We have licensed more than 230 LO‑CAT units worldwide LO CAT Gas Type LO CAT has been used to recover sulfur in the following gas types Acid Gas 46% Air 14% Biogas 8% Fuel Gas 9% Landfill Gas 2% Natural Gas 10% Syngas 5% Rx Off‑Gas 5% We evaluate We solve We prove Coso Case Study 22 Years of Reliable Sulfur Removal
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Thorpe is in the business of combatting equipment failures Today the demands on Sulfur Recovery Units SRUs are more severe than at any time in the past These units undergo higher operating temperatures more throughput O2 enrichment swing operations part time air/O2 faster startups/shutdowns and stricter emission limits
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If the sulfur recovery unit is located in a natural gas processing plant the type of reheat employed is typically either auxiliary burners or heat exchangers with steam reheat being used occasionally If the sulfur recovery unit is located in a crude oil refinery the typical reheat scheme uses 3536 to 4223 kPa
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Sulphur Recovery Unit and Gas Treatment Through proprietary technologies for Gas Sweetening and Tail Gas Treatment RAR Technology we provide customized engineering solutions in compliance with the most stringent environmental regulations Every project is tailored on customer needs with the aim to optimize CAPEX and OPEX Based on the H2S
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A sulfur recovery unit converts the hydrogen sulfide in the acid gas into elemental sulfur Of the processes available for these conversions the Claus process is by far the most well known for recovering elemental sulfur whereas the conventional Contact Process and the WSA Process are the most used technologies for recovering sulfuric acid
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Brimstone Sulfur Recovery Analyzers Direct coupled tail gas and pit gas analyzer for sulfur recovery units Monitors H 2 S SO 2 COS and CS 2 and calculates air demand Brimstone analyzers support tail gas pit gas and acid gas SRU applications Galvanic is well known as the leader in process analyzers used to optimize sulfur recovery units
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Sulfur recovery unit Email info The sulfur recovery project is a key environmental protection project for oil refining natural gas purification and coal chemical companies We adopt the mature Claus process new ammonia desulfurization technology to convert 98% of H2S into elemental sulfur through the third level Claus
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It is the primary online analytical measurement used in the Claus sulfur recovery process Recommended products 900 888 Tail gas treating unit TGTU In the TGTU it is important to measure residual hydrogen H2 at the outlet of the reduction reactor as well as the SO2 at the inlet of the quench tower Recommended products 931 932 934
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Approximately 90 percent of the sulfur from the processing natural gas and refining high sulfur crude oils is recovered by the Claus process The reaction consists in two steps 2 H2S 3 O2 → 2 SO2 2 H2O 2 H2S SO2 → 3/2 S2 2 H2O However the Claus process typically recovers maximum 98 percent of the hydrogen sulfide feedstream
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Optimal operation of your Sulfur Recovery Unit SRU requires measurement and control of a complex sequence of processes Of particular importance is control of the reaction furnace temperature to prevent damage to the refractory at high temperatures and ammonium salt from plugging the converters at low temperatures
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Sulfur Recovery Engineering SRE is an international engineering field testing and consulting company that helps clients to operate safely cut costs reduce emissions and optimize performance of their Facilities ESTABLISHED IN 1998 IN CALGARY ALBERTA CANADA
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Using years of accumulated SRE sulfur unit data our team is able to accurately model any given SRU In conjunction with our field results the models provide important process values such as Reaction Furnace adiabatic temperature Reactor bed dewpoints and catalyst activity
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Typical Claus sulfur recovery unit CW = Cooling water STM = Steam BFW = Boiler feed water In addition to the oxidation of H 2 S to SO 2 and the reaction of SO 2 with H 2 S in the reaction furnace many other side reactions can and do occur in the furnace Several of these possible side reactions are CO 2 H 2 S → COS H 2 O 4
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Sulfur Plant Services Specialty Equipment Air Nitrogen Automated Purge Systems Amine Filtration Systems Electric Process Gas Heaters for Sulfur Recovery Units Entrained Sulfur Removal Elements Heated ESRE Hazardous Area Gas Monitoring Low Pressure Rich Amine Flash Drums RAFD SRU Modified Claus Process Burners SRU Tail Gas
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Sulfur recovery unit process flow diagram We will elaborate process details and construction details in next posting For Sulfur recovery Unit Feed Acid Gas H2S and CO2 Sour Gas H2S and NH3 Product Sulfur Uses of Sulfur For H2SO4 Sulfuric acid manufacturing Medicine Cosmetics Fertilizer Rubber Pesticides
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The basic process used in sulphur recovery unit SRU is Claus Process which involves combustion of a part of H 2 S gas to form SO this SO 2 is reacted conversion with H 2 S in presence of catalyst Cobalt / molybdenum / aluminum oxide to form elemental sulphur and The main chemical reactions involved are 2H 2 S 3O 2 → 2SO 2 2H 2 O Combustion reaction 4H 2 S
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The H₂S present in acid gas streams can be valorized by oxidation to elemental sulfur through Sulfur Recovery Unit In turn elemental Sulfur is used in the fertilizer and rubber industries and for the extraction of some metals copper nickel uranium mainly via its intermediate conversion into Sulfuric Acid H₂SO₄ Axens Offer
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She co authored The Impact of Biofeed Co processing on Conventional Refinery Amine Sour Water Stripping and Sulphur Recovery Units and presented that paper at the 2024 Advanced Amine Treating and Sulphur Recovery Technical Training Course Eduardo Sanhueza Amine Treating Suphur Recovery Bilingual Liaison
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At the sulfur recovery unit SRU #2 Pit an 11 hole was bored into a clear section of the sulfur pit roof between seal legs #1 and #2 to serve as the entrance for piping from SRU#1 The edge of this hole is about 1 inside the pit side wall Boring this hole was done by workers under fresh air and a shutdown of SRU#2 was not needed
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Sulfur Recovery Solutions Sulfur is removed as a contaminant from sour gas streams to reduce harmful emissions and protect downstream equipment It can also be recovered as a marketable by product As sulfur dioxide emissions regulations become more stringent globally gas processors need proven sulfur recovery solutions to reliably comply
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