sulfur removal conversion

Advances in sulfur conversion-associated enhanced ...

2019-8-1  Thus attempts have been made to upgrade the CEBPR process or develop new processes for the biological removal of P from sulfate-rich wastewater (e.g. sulfur conversion-associated EBPR, S-EBPR) have recently been developed in tropical and subtropical coastal regions, which provides an opportunity to integrate carbon (C), nitrogen (N), P and S co ...

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Sulfur removal from coal with supercritical fluid treatment

2007-4-3  racttAsb Conversion and sulfur removal of coal in sub- and supercritical water was studied in a micro reactor in the temperature range of 340-400 o C and water density 0-0.27 g/cm 3 for 0-90 min under N 2 atmosphere. The experiments were conducted to investigate the effect of reaction temperature, pressure, time and density of water on the ...

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8.13 Sulfur Recovery - US EPA

2021-6-25  97% Removal) 96.5 73 145 30103204 Sulfur Removal Process (99.9% Removal)e 99.9 2.0 4.0 30103299 Other Not Classified [99% Removal]f 99 20 40 a The emission factors were determined assuming all sulfur compounds are converted to SO 2 prior to atmospheric release.

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An evaluation of desulfurization technologies for sulfur ...

The current industrial method for removal of sulfur from fuels is hydrodesulfurization (HDS), which is a high temperature, high pressure catalytic process. This makes HDS a very costly option for deep desulfurization. Moreover, HDS is not effective for removing heterocyclic sulfur compounds such as dibenzothiophene (DBT) and its derivatives, especially 4,6-dimethyldibenzothiophene (4,6-DMDBT).

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(PDF) Investigation into the removal of sulfur from tire ...

The removal of sulfur during tire pyrolysis offers the greatest potential for the separation of sulfur products from the evolved gases and vapors. ... It could also be used for the conversion of ...

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Biological assisted organic sulfur removal from low rank ...

2020-10-9  Initially, about 24 ± 2.0% removal of total sulfur was achieved during period of 5 days at a pulp density of 20%. After 20 days, the sulfur removal rate (28 ± 2.8%) was similar to that of the pulp density of 15, 17.5–20% Fig. 12. However, with a pulp density of 10%, a total sulfur removal of 18% was obtained during the same period.

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Sulfur transformation in sulfur autotrophic denitrification

2020-10-2  Furthermore, sulfur transformation and balance in nitrate removal process was also investigated. This suggests the transforming pathways of sulfur compounds in denitrification process. Nitrogen removal and sulfur conversion process are dependent

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Biological conversion of sulfide to elemental sulfur

2016-7-20  Indian Journal of Engineering Materials Sciences Vol. 5, August 1998, pp.202-21 0 Biological conversion of sulfide to elemental sulfur P F Henshaw, 1K Bewtra N Biswas Department of Civil and Environmental Engineering, University of Windsor, Windsor, Ontario,

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Hydroprocessing: Hydrotreating Hydrocracking

2018-7-28  Selective catalysts for sulfur removal without olefin ... Difficult to generalize because conversion of feedstock is relatively low Liquid products generally have volume gravity increase –typically +1oAPI General relationship of hydrogen required vs. sulfur content Naphtha: (scf/bblH2) = 191 (wt% sulfur) –30.7 ...

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Tutorial on Upgrading of Oilsands Bitumen

2010-8-17  - Sulfur removal and conversion - Sour water. Utilities - Hydrogen - Steam - Power Natural Gas Sulfur By-Products Heavy By-Product* Extraction. Waste Heat * Heavy By-Product = Coke, Asphaltenes, or Vacuum Residue . Oil Sands Upgrading Chair. Upgrading Technologies. Bitumen Upgrading Separations Reactions Asphaltene and solids removal

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Effect of sulfate removal in a high sulfate volumetric ...

2020-4-9  3.2.1 Conversion of sulfur With the increase of sulfate volumetric loading, the average sulfate removal rates at stage A, B, C, and D were 93%, 91%, 89%, and 81%, respectively. Reduction of sulfate removal rate during micro-oxygen environment was partly due to a transfer of some organic carbon by facultative bacteria.

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Formation and Control of Sulfur Oxides in Boilers

2018-6-7  ent degrees of conversion of SO2, to SO3, but, in general, one may expect 1 to 5% conversion. The formation of SO3 in boilers is a complex process, which is not thoroughly understood. Present ... Removal of Sulfur from Fuel From the standpoint of boiler opera-tion and prevention of

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Sulfur removal from coal with supercritical fluid treatment

2007-4-3  racttAsb Conversion and sulfur removal of coal in sub- and supercritical water was studied in a micro reactor in the temperature range of 340-400 o C and water density 0-0.27 g/cm 3 for 0-90 min under N 2 atmosphere. The experiments were conducted to investigate the effect of reaction temperature, pressure, time and density of water on the ...

More

8.13 Sulfur Recovery - US EPA

2021-6-25  97% Removal) 96.5 73 145 30103204 Sulfur Removal Process (99.9% Removal)e 99.9 2.0 4.0 30103299 Other Not Classified [99% Removal]f 99 20 40 a The emission factors were determined assuming all sulfur compounds are converted to SO 2 prior to atmospheric release.

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US Patent for Process for sulfur removal from refinery off ...

2018-7-13  Another desulfurization option for fuel gas streams containing organic sulfur compounds is a two-step process consisting of hydrodesulfurization, e.g. the conversion of organic sulfur compounds to H 2 S, and the subsequent removal of the H 2 S with an amine based system or a solid sulfur adsorbent such as ZnO. This approach is typically used ...

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Sulfur removal process - BP Amoco Corporation

However, when it is desired to optimize the removal of specific sulfur-containing impurities from a specific hydrocarbon liquid, it may be advantageous to utilize a specific olefin or alcohol which is selected to: (1) convert the sulfur-containing impurities to products which have a sufficiently increased boiling point that they can be easily ...

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An evaluation of desulfurization technologies for sulfur ...

The current industrial method for removal of sulfur from fuels is hydrodesulfurization (HDS), which is a high temperature, high pressure catalytic process. This makes HDS a very costly option for deep desulfurization. Moreover, HDS is not effective for removing heterocyclic sulfur compounds such as dibenzothiophene (DBT) and its derivatives, especially 4,6-dimethyldibenzothiophene (4,6-DMDBT).

More

Gas Desulfurization - H₂S removal for biogas upgrading

2021-11-14  Gas Desulfurization (H₂S removal) Technologies. Common H₂S removal technologies for H₂S removal from biogas fall into one of the following: Biological conversion by which sulfur compounds convert into elemental sulfur by sulfide

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(PDF) Investigation into the removal of sulfur from tire ...

The removal of sulfur during tire pyrolysis offers the greatest potential for the separation of sulfur products from the evolved gases and vapors. ... It could also be used for the conversion of ...

More

Biological assisted organic sulfur removal from low rank ...

2020-10-9  Initially, about 24 ± 2.0% removal of total sulfur was achieved during period of 5 days at a pulp density of 20%. After 20 days, the sulfur removal rate (28 ± 2.8%) was similar to that of the pulp density of 15, 17.5–20% Fig. 12. However, with a pulp density of 10%, a total sulfur removal of 18% was obtained during the same period.

More

Effect of sulfate removal in a high sulfate volumetric ...

2020-4-9  3.2.1 Conversion of sulfur With the increase of sulfate volumetric loading, the average sulfate removal rates at stage A, B, C, and D were 93%, 91%, 89%, and 81%, respectively. Reduction of sulfate removal rate during micro-oxygen environment was partly due to a transfer of some organic carbon by facultative bacteria.

More

Formation and Control of Sulfur Oxides in Boilers

2018-6-7  ent degrees of conversion of SO2, to SO3, but, in general, one may expect 1 to 5% conversion. The formation of SO3 in boilers is a complex process, which is not thoroughly understood. Present ... Removal of Sulfur from Fuel From the standpoint of boiler opera-tion and prevention of

More

Sulfur removal from crude oil and hydrocarbons »

Sulfur removal from crude oil and hydrocarbons. The poor quality of crude oil currently can obviously result in the high sulfur contents of oil products, which can lead to corrosion, catalyst poisoning, environmental pollution and other negative consequences.

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Sulfur Recovery Axens

Sub-dewpoint Claus process that improves the overall Sulfur Removal by absorbing liquid elemental sulfur on the catalyst. This technology uses a combination of Axens titanium-based and alumina catalysts, in order to deal with residual COS and CS 2 species and at the same time reach outstanding H 2 S conversion performances.

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Denitrifying sulfur conversion-associated EBPR: The effect ...

The performance of the denitrifying sulfur conversion-associated enhanced biological phosphorus removal (DS-EBPR) process tends to be unstable and requires further study and development. This in turn requires extensive study of the anaerobic metabolism in terms of its stoichiometry and kinetics. Thi

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US Patent for Process for sulfur removal from refinery off ...

2018-7-13  Another desulfurization option for fuel gas streams containing organic sulfur compounds is a two-step process consisting of hydrodesulfurization, e.g. the conversion of organic sulfur compounds to H 2 S, and the subsequent removal of the H 2 S with an amine based system or a solid sulfur adsorbent such as ZnO. This approach is typically used ...

More

Sulfur removal Haldor Topsoe

2021-11-16  Sulfur removal Sulfurous emissions standards are tightening worldwide, forcing industrial, chemical, refining, and metallurgical operations to compromise profitability to meet legal requirements. Sometimes a crystal-ball approach is needed when dealing with sulfurous emissions.

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Sulfur removal process - BP Amoco Corporation

However, when it is desired to optimize the removal of specific sulfur-containing impurities from a specific hydrocarbon liquid, it may be advantageous to utilize a specific olefin or alcohol which is selected to: (1) convert the sulfur-containing impurities to products which have a sufficiently increased boiling point that they can be easily ...

More

(PDF) Investigation into the removal of sulfur from tire ...

The removal of sulfur during tire pyrolysis offers the greatest potential for the separation of sulfur products from the evolved gases and vapors. ... It could also be used for the conversion of ...

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SULFUR, CALCIUM and MAGNESIUM

2019-2-21  Sulfur removal by various crops is summarized in Table 1. Sulfur deficiency on growing crops is often mistaken for nitrogen deficiency. With sulfur ... conversion of elemental sulfur to sulfate in time to help the crop that year. Gypsum (analysis varies) is calcium sulfate and

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Gas Desulfurization - H₂S removal for biogas upgrading

2021-11-14  Gas Desulfurization (H₂S removal) Technologies. Common H₂S removal technologies for H₂S removal from biogas fall into one of the following: Biological conversion by which sulfur compounds convert into elemental sulfur by sulfide

More

Sulfur removal from crude oil and hydrocarbons »

Sulfur removal from crude oil and hydrocarbons. The poor quality of crude oil currently can obviously result in the high sulfur contents of oil products, which can lead to corrosion, catalyst poisoning, environmental pollution and other negative consequences.

More

10 Some Methods of Reducing Sulfur Oxides from Power ...

Advanced coal cleaning methods may be able to increase the amount of sulfur and ash removed but all of the processes are in their early stages of development and many may be high cost for the extra sulfur removal that is accomplished. A low sulfur—low ash

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Removal of sulfur by adding zinc during the digestion ...

2017-12-7  This paper proposes a novel approach to sulfur removal by adding zinc during the digestion process. The effects of zinc dosage on the concentrations

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Sulfur Recovery Unit (SRU)|CHIYODA CORPORATION

The sulfur recovery rate of the Claus process is about 95 to 97%. The tail gas that contains unrecovered sulfur is fed to the tail gas treating unit (TGT). The recovered sulfur is stored in the sulfur pit and shipped as product after undergoing a degassing process

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Catalysts and Processes for H2S Conversion to Sulfur

S Conversion to Sulfur Daniela Barba ... There are different technologies for the removal of hydrogen sulfide, but they are characterized by high costs and limited H 2

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