— A shutdown period is an ideal time for repairing issues or attending to any preventive maintenance according to the manufacturer s recommendations Maintenance is especially essential for companies that had to shut down operations abruptly and might not have had an opportunity to store or protect equipment properly because of the
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— The hydrodesulfurization process condition has determined the degree of desulfurization; for example the inlet mixture is mixed with a co current of hydrogen and maintained at a pressure of 5 10 MPa and a temperature of 260 430 °C with a supply of cobalt or molybdenum oxides Catalysts activate hydrogen to react with nitrogen and
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— An effective plant shutdown should result in reduced unplanned downtime reduced overtime and greater operational efficiencies Five distinct phases of a plant shutdown are scoping planning scheduling execution and wrap up Phase 1 Scoping What to do The scoping phase is the foundation for a plant shutdown
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Daily Clean should be performed during instrument startup and instrument shutdown to clean the sample line After sampling an excessively large sample or a sample that can easily clog the sample probe it is recommended to perform the Daily Clean procedure Daily Clean can also be used to remove residual sample from previous tubes
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— The desulfurization effect is best at pH = 2 and the desulfurization yield can reach % but it has a certain impact on the quality indicators of the petroleum coke industry The heating value of petroleum coke is slightly reduced and the volatile content the ash yield content has increased compared with the original coke
— Sulfur dioxide emissions from fossil fuel combustion have been known to cause detrimental health and environmental effects The currently used hydrodesulfurization HDS method employed by refineries has several drawbacks such as excessive hydrogen consumption high energy demand and inability to remove complex organosulfur
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— For example in sector such as energy or manufacturing a maintenance activity can cause the shutdown of an entire production line or in the case of a wind turbine inspection may face the safety of an operator to measure a simple indicator Hence the application of more intelligent maintenance strategies can offer huge benefits
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— Strategies for heavy oil desulfurization were evaluated by reviewing desulfurization literature and critically assessing the viability of the various methods for heavy oil The desulfurization methods including variations thereon that are discussed include hydrodesulfurization extractive desulfurization oxidative desulfurization
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— Experimental study on integrated desulfurization and denitrification of low temperature flue gas by oxidation method
Yêu cầu trực tuyến →— Hydrogen sulfide H2S is a notorious and lethal gas widely generated in human economic activities and natural occurrences The growing demand for pollution control makes it vital for the development of efficient processes to remove and convert H2S into high valued products As such diversified technologies have been extensively
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— Condensable particulate matter contributed more to PM after ultra low emission Organic fraction was dominant in condensable particulate matter accounting for % SO 4 2− was the most abundant water soluble ion which may be closely related to SO 3 ultrafine particles and soluble SO 2
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— Introduction In the industrial production of China the processing of phosphate rock volcanic eruptions kerosene combustion and aluminum smelting will lead to flue gas emissions containing a large amount of SO 2 is a highly irritating gas Because SO 2 is freely soluble in water and enters the respiratory tract it can generate
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— Iron losses in slag during an intensive desulfurization of hot metal can reach % from the total amount of processed hot metal The characteristics of different metal droplets such as morpho
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