scholarly journals IMPROVING THE EFFICIENCY OF THE FUEL AND LIMIT GAS DRYING PLANT

2021 ◽  
Vol 1 (1) ◽  
pp. 56-57
Author(s):  
Anastasiya Mashina ◽  
Anatoliy Dement'ev ◽  
Evgeniy Podoplelov
Keyword(s):  
Hydrogen Sulfide ◽  
Ammonium Salts ◽  
Corrosion Wear ◽  
Absorption Column

The paper proposes a solution to the problem of reducing corrosion wear of the pipeline for hydrogen sulfide gas caused by the accumulation of ammonium salts during the pipeline operation. The possibility of retrofitting the existing process diagram of the fuel and limit gas drying unit with an absorption unit was considered, as well as the absorption column was calculated and its main geometric dimensions were determined

scholarly journals EXCLUSION OF ACCELERATED CORROSION WEAR BY REPLACING THE CONSTRUCTION MATERIAL

2021 ◽  
Vol 1 (1) ◽  
pp. 27-28
Author(s):  
Anatoliy Dement'ev ◽  
Evgeniy Podoplelov ◽  
Nikita Lavrenyuk
Keyword(s):  
Hydrogen Sulfide ◽  
Structural Material ◽  
Construction Material ◽  
Corrosion Wear ◽  
Accelerated Corrosion

A method of eliminating corrosion due to the presence of hydrogen sulfide by re placing the structural material with a material resistant to the effects of particularly aggressive envi ronments is considered

scholarly journals THE PROBLEM OF SALT DEPOSITION AND CORROSION PROCESSES IN THE INSTALLATION FOR DRYING AND CLEANING FUEL GAS FROM HYDROGEN SULFIDE

2020 ◽  
Vol 2020 (1) ◽  
pp. 63-64
Author(s):  
Aleksandr Sokolov ◽  
Anatoliy Dement'ev ◽  
Evgeniy Podoplelov
Keyword(s):  
Hydrogen Sulfide ◽  
Gas Pipeline ◽  
Ammonium Salts ◽  
Technological Equipment ◽  
Fuel Gas ◽  
Salt Deposition ◽  
Petrochemical Company

The paper proposes a project for washing hydrogen sulfide-containing gas from ammonia, which allows solving the problem of formation of ammonium salts in the gas pipeline and other technological equipment of the unit for drying and cleaning fuel gas from hydrogen sulfide in shop 17/19 of Angarsk petrochemical company

scholarly journals Remotion of Hydrogen Sulfide in Absorption Column

2017 ◽  
Vol 4 (1) ◽  
pp. 1-6
Author(s):  
F. G. M Porto ◽  
M. L Begnini ◽  
e J. R. D Finzer
Keyword(s):  
Hydrogen Sulfide ◽  
Absorption Column

Absorption-based Mono-ethanolamine Treatment of Associated Petroleum Gas. Part 1

2019 ◽  
pp. 1-10
Author(s):  
S. V. Golovastov ◽  
D. M. Alexandrova
Keyword(s):  
Hydrogen Sulfide ◽  
Elemental Sulfur ◽  
Vapour Phase ◽  
Design Calculation ◽  
Absorption Column ◽  
Desorption Process ◽  
Associated Petroleum Gas ◽  
Complete Calculation ◽  
Mono Ethanolamine

The paper presents an absorption-based method to treat associated petroleum gas (APG) using the mono-ethanolamine (MEA) as an absorbent. Involving oiler’s specific data in the southern regions of Russia, an APG treating unit has been developed to take out hydrogen sulfide. The extracted hydrogen sulfide can be used to obtain elemental sulfur. The development object is a treating APG unit.The work objective was to develop an absorber for APG treating to take out hydrogen sulfide by means of regenerated MEA aqueous solution. The work was aimed at reducing environmental pollution when using associated petroleum gas as an energy utility.A plate-shaped absorber model was used. In this design, the liquid enters the upper plate, moves horizontally along the plates, from the overflow from the overlying one towards the overflow to the underlying one, and outlets through the lower part of the absorber.The paper offers an option of the unit for APG treating for removing hydrogen sulfide with the elemental sulfur further produced by the Claus process to solve this problem through using APG as an industrial and domestic gas.The work has involved a complete calculation of the two-component absorption process, a design calculation of the plate-shaped absorber, in particular, determination of the cowl wall thickness, a fitting selection, a calculation of the foundation bolts taking into account the wind load on the absorption column, a rationale for the option chosen, and a calculation of the complete desorption process.In entering the desorber, the absorbent undergoes a single liquid and vapour phase evaporation. To calculate a mole fraction of the stripping initial absorbent, as well as phase compositions, is used a Tregubov method.

Remotion of Hydrogen Sulfide in Absorption Column

2017 ◽  
Vol 4 (1) ◽  
pp. 1-6
Author(s):  
F. G. M. Porto ◽  
◽  
M. L. Begnini ◽  
e J. R. D. Finzer ◽  
◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Absorption Column

scholarly journals Absorption removal of hydrogen sulfide from recirculated biogas

2020 ◽  
Vol 13 (1) ◽  
pp. 13-18
Author(s):  
Nikolas Gróf ◽  
Jana Barbušová ◽  
Kristína Hencelová ◽  
Miroslav Hutňan
Keyword(s):  
Hydrogen Sulfide ◽  
Biogas Production ◽  
Anaerobic Treatment ◽  
Synthetic Wastewater ◽  
Uasb Reactor ◽  
Sulfide Concentration ◽  
Absorption Column ◽  
Hydrogen Sulfide Removal ◽  
Low Concentrations ◽  
Absorption Of Hydrogen

AbstractThis study is focused on the effect of biogas recirculation with hydrogen sulfide removal on anaerobic treatment of sulfur-enriched synthetic wastewater in a UASB reactor. The presence of hydrogen sulfide in biogas causes problems in its further energy recovery while sulfides inhibit the anaerobic process. The reactor was gradually loaded with sulfates and their effect on the reactor operation was monitored. At the same time, external absorption of hydrogen sulfide from biogas with absorbent regeneration was operated. The results show that low concentrations of added sulfates support biogas production. At the sulfate concentration of 125 mg l−1, biogas production increased by approximately 2 l d−1. However, further increasing of the amount of sulfates in the substrate led to the opposite effect. At twice the amount of sulfates, the biogas production decrease by 1 l d−1 and its adverse effects on the removal of N-NH4, NC and P-PO4 were observed. Biogas recirculation through the absorption column ensured a decrease in the hydrogen sulfide concentration from 19 960 ppm to 4 030 ppm and an increase in the methane content from 59.2 % to 83 % and also a decrease in the sulfides concentration in the reactor. From the measured data it can be concluded that this method reduces sulfides inhibition.

Endogenous hydrogen sulfide sulfhydrates IKKβ at cysteine 179 to control pulmonary artery endothelial cell inflammation

2019 ◽  
Vol 133 (20) ◽  
pp. 2045-2059 ◽  
Author(s):  
Da Zhang ◽  
Xiuli Wang ◽  
Siyao Chen ◽  
Selena Chen ◽  
Wen Yu ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Endothelial Cell ◽  
Pulmonary Artery ◽  
Cell Model ◽  
Site Directed Mutagenesis ◽  
Critical Event ◽  
Hypertensive Rats ◽  
Pulmonary Artery Endothelial Cell

Abstract Background: Pulmonary artery endothelial cell (PAEC) inflammation is a critical event in the development of pulmonary arterial hypertension (PAH). However, the pathogenesis of PAEC inflammation remains unclear. Methods: Purified recombinant human inhibitor of κB kinase subunit β (IKKβ) protein, human PAECs and monocrotaline-induced pulmonary hypertensive rats were employed in the study. Site-directed mutagenesis, gene knockdown or overexpression were conducted to manipulate the expression or activity of a target protein. Results: We showed that hydrogen sulfide (H2S) inhibited IKKβ activation in the cell model of human PAEC inflammation induced by monocrotaline pyrrole-stimulation or knockdown of cystathionine γ-lyase (CSE), an H2S generating enzyme. Mechanistically, H2S was proved to inhibit IKKβ activity directly via sulfhydrating IKKβ at cysteinyl residue 179 (C179) in purified recombinant IKKβ protein in vitro, whereas thiol reductant dithiothreitol (DTT) reversed H2S-induced IKKβ inactivation. Furthermore, to demonstrate the significance of IKKβ sulfhydration by H2S in the development of PAEC inflammation, we mutated C179 to serine (C179S) in IKKβ. In purified IKKβ protein, C179S mutation of IKKβ abolished H2S-induced IKKβ sulfhydration and the subsequent IKKβ inactivation. In human PAECs, C179S mutation of IKKβ blocked H2S-inhibited IKKβ activation and PAEC inflammatory response. In pulmonary hypertensive rats, C179S mutation of IKKβ abolished the inhibitory effect of H2S on IKKβ activation and pulmonary vascular inflammation and remodeling. Conclusion: Collectively, our in vivo and in vitro findings demonstrated, for the first time, that endogenous H2S directly inactivated IKKβ via sulfhydrating IKKβ at Cys179 to inhibit nuclear factor-κB (NF-κB) pathway activation and thereby control PAEC inflammation in PAH.

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