Sunday, July 22, 2018

Fire and Brimstone! Sulphur 2018

Sulphur 2018 + Sulphuric Acid , 5-8 November 2018, Gothenburg, Sweden, is coming up. Here is info from the conference Web site (https://events.crugroup.com/sulphur/home)

TIP: Browse past the description below for a TIP on how to use the conference info to explore the great beyond of sulfur.

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Understand the big picture commercial and technical scenarios impacting the sulphur and sulphuric acid industry - Key themes for 2018 announced
CRU’s Sulphur conference is the global meeting for professionals involved in the production, trade and consumption of sulphur and sulphuric acid.
For over 30 years, the conference has been the ideal opportunity for hundreds of delegates to understand the big picture issues that are shaping the industry – whether they be market forces influencing supply, demand and price, or new technical and operational initiatives that improve production. 
We are pleased to announce the key themes for 2018, in advance of the full agenda being released in August. Join us in Gothenburg to understand the market landscape for the sulphur and sulphuric acid markets, including the impacts of IMO 2020 and the outlook for the European chemical industry.
The technical agenda will include insights and operational experience covering: emissions management, operational improvement, maintenance planning, new technology developments; new plant designs and project execution strategies.
Click here for more information on the key themes in the 2018 agenda.
What else you can expect from this year's conference:
450+ delegates attending to buy, sell, do business, learn and share experience. View previous delegates
70+ Technical experts ready to discuss your challenges and offer practical solutions utilising new technologies, processes and equipment. View the current exhibitor list
45+ Presenters sharing operational experience, highlighting new technologies, and offering market insights.
Networking tailored to maximise your time
•14+ hours of formal and informal networking
•Buyers and sellers of sulphur and acid brought togther to discuss commercial opportunities
•Operators and technical solution providers meeting to discuss operational challenges
Pre-event networking goes live for all registered delegates 6 weeks before the event to ensure you arrange those key meeting and maximise the value of your attendance.
Book today
Secure your early savings rate
Special operator rate only £550
Do you work as a manager, chemist, engineer or operator in an oil, gas, sulphur, or sulphuric acid facility? You could qualify for a discounted rate of just £550 for CRU Sulphur 2018
To see if you qualify, email your name, job title, company and business activity to amanda.whicher@crugroup.com
I look forward to meeting you in Gothenburg this November, please don’t hesitate to contact me if you have any questions.
Kind regards,
Amanda Whicher
Portolio Director - Sulphur
CRU Events
E: amanda.whicher@crugroup.com.
Raise your profile in Gothenburg - only two stands remaining
Another great way to increase your profile at the conference is to sponsor or exhibit. Each year more than 70 solution providers from around the world exhibit at CRU Sulphur conference –to access a global audience of sulphur and acid professionals representing more than 220 companies from 40+ countries. Packages are tailored to ensure high-profile brand exposure and to maximise face-to-face interaction with delegates.
The exhibition for 2018 is nearly sold out – click here to see who is exhibiting in Gothenburg.
For more information on the exhibition and sponsorship opportunities available, please contact: Michelle Fisk, at michelle.fisk@crugroup.com or call + 44 (0)20 7903 2159.

Source: https://events.crugroup.com/sulphur/home
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Themes explored during Sulphur 2018
What can you expect from the 2018 agenda?
CRU Sulphur + Sulphuric Acid is the only event to span the entire sulphur and acid value chains. Attendees have the unique opportunity to learn about the latest developments affecting the supply, demand and trade of sulphur and sulphuric acid in addition to best practice operational experience and new technology innovations that can improve and enhance production.

Key market and commercial themes for 2018 include:
 The CRU View: Global Sulphur outlook
 Sulphuric acid outlook: How long can tightness remain?
 IMO 2020: How is the industry responding as the deadline nears?
 Challenges and opportunities for the European chemical market
 The evolving energy mix: What does this mean for the sulphur and sulphuric acid industry?

Key technical themes for 2018 include:
Technical subject areas for 2018 will feature a mix of new technology, process, equipment and materials innovations, in addition to case-study based papers focusing on operation experience and solutions to operational challenges. The agenda will be dual-streamed into broad sulphur and sulphuric acid subject areas, and will include the following topics areas:

 
Effective SRU operations: Managing your plant for optimum reliability and performance
 New plant and project execution case studies
 Tail gas treating and emissions management strategies
 Operational case studies: Maintaining and improving operations
 Emissions management and sustainable sulphur recovery
 Plant design options for improved safety and performance
 Sulphur operations troubleshooting clinic
 Effective temperature management for increased reliability and energy efficiency
 Acid gas and oxygen enrichment options
 New technology and equipment for increased efficiency
 New approaches to sulphur production, pipelines and melting
 Improving plant performance through effective maintenance planning and analysis
Source: https://events.crugroup.com/sulphur/home
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TIP: Browse the Sulphur Conference Key Technical Themes for ideas on how to Google® for more information.  For example, one theme is Effective SRU operations. When you Google® this phrase, you will find items like the following open access article …

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Egyptian Journal of Petroleum
Volume 26, Issue 3, September 2017, Pages 579-592
Egyptian Journal of Petroleum
Maximization of sulfur recovery efficiency via coupled modification of GTU and SRU processes
Author links open overlay panel A. Garmroodi Asil a, A. Shahsavand b, Sh. Mirzaei baChemical Engineering Department, Faculty of Engineering, University of Bojnord, Bojnord, IranbChemical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
Received 18 May 2016, Revised 18 July 2016, Accepted 22 August 2016, Available online 10 September 2016.
crossmark-logo
https://doi.org/10.1016/j.ejpe.2016.08.003
Open Access funded by Egyptian Petroleum Research Institute
Under a Creative Commons license
Highlights
•Three different AGE schemes are studied to enrich SRU feed stream.
•Aspen-HYSYS coupled with Promax to simulate the entire GTU + enrichment + SRU.
•SRU feed stream is enriched with H2S from 33.5 mol% to over 70 mol%.
•Air preheat is more benign than acid gas preheat for sulfur recovery efficiency.
•Optimization of the entire GTU + enrichment + SRU has not been addressed previously.
Abstract
Over 60% of Iranian natural gases are contaminated with hydrogen sulfide or other sulfur compounds. Khangiran refinery which receives around 50 MMSCMD sour gas with 3.35 mol% H2S as its GTU feed, produces around 45% of Iranian sulfur production. Three of the four existing sulfur recovery units (SRU’s) are initially installed more than 3 decades ago. Such relatively old Claus units with no tail gas clean up facility have usually sulfur recovery efficiencies as low as 90%, due to the low H2S content of the acid gas stream entering SRU process. Eliminating impurities and contaminants such as carbon dioxide form SRU feed stream via proper acid gas enrichment (AGE) process can effectively elevate the Claus combustion chamber temperature and consequently increase the overall sulfur recovery efficiency of the entire SRU process, to achieve more cleaner (SO2 free) air and higher purity product (with brighter color).
Three different enrichment schemes are compared together and the most effective and optimal scheme was selected based on their overall sulfur recovery efficiencies. Coupled use of Aspen HYSYS and Promax software was employed to simulate the entire GTU + enrichment section and SRU processes. It is shown that the third scheme can successfully enrich H2S in the acid gas stream from its original value of 0.335 (mole fraction) to more than 0.70. The optimal values of recycled acid gas split ratio, recycled lean amine split ratio and enrichment tower pressure for this scheme are found to be around 0.8, 0.14 and 60 psia, respectively.
To further reduce the sulfur dioxide emission of the entire refining process, two scenarios of acid gas or air preheats are investigated when either of them is used simultaneously with the third enrichment scheme. The maximum overall sulfur recovery efficiency and highest combustion chamber temperature is slightly higher for acid gas preheats but air preheat is more favorable because it is more benign. To the best of our knowledge, optimization of the entire GTU + enrichment section and SRU processes has not been addressed previously.
Free full text: https://www.sciencedirect.com/science/article/pii/S1110062116300782
Source: https://www.sciencedirect.com/science/article/pii/S1110062116300782
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Saturday, July 21, 2018

Clean Up on Aisle 9! (extractive desulfurization of model fuel)

Here’s an interesting article authored by several researchers from Portugal …
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Fuel
Volume 234, 15 December 2018, Pages 414-421
Towards a sulfur clean fuel: Deep extraction of thiophene and dibenzothiophene using polyethylene glycol-based deep eutectic solvents
Filipa Lima a, b, c, d, e, Justine Gouvenaux a, Luis C. Branco b, c, Armando J.D. Silvestre d, Isabel M. Marrucho a, e
a Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
b Solchemar, Lda, Rua 5 de Outubro n° 121C, 1°E, 7580-128 Alcácer do Sal, Portugal
c LAQV-REQUIMTE, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal
d CICECO-Aveiro Institute of Materials and Department of Chemistry, Universidade de Aveiro, 3810-193 Aveiro, Portugal
e Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. Da República, 2780-157 Oeiras, Portugal
https://doi.org/10.1016/j.fuel.2018.07.043
Abstract
In this work, extractive desulfurization of model fuel containing dibenzothiophene (DBT) and thiophene (Th) as sulfur compounds was carried out using 16 different Deep Eutectic Solvents (DES) based on polyethylene glycol (PEG) and its precursors. The aim of this study is the reduction of the sulfur content of fuels below the environmental regulation (10 ppm), using PEG-based DES as low-cost extraction media under mild conditions and to compare their extractive performance with that of PEG alone, which by itself is a green solvent. For that purpose, 7 different quaternary ammonium and phosphonium salts were combined with four different molecular weight grades of PEG and PEG precursors such as ethylene glycol and triethylene glycol. The best results were obtained for the DES composed of tetrabutylammonium chloride (TBAC) and PEG400, which showed that it is possible to achieve, in single extraction step, 85% and 68% of extraction efficiency, and deep desulfurization in 2 and 3 cycles, for DBT and Th, respectively. In addition, this DES is not soluble in the model fuel and its extraction capacity is independent on the starting sulfur concentration. Finally, after being reused six times, TBAC:PEG400 DES still maintained 53% and 17% of its capacity, for DBT and Th removal, respectively, and after a regeneration step the performance of the DES was fully recovered.
source: https://www.sciencedirect.com/science/article/pii/S0016236118312420
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TIP: Google® extractive desulfurization of model fuel as a quick way to find related articles.  Following is a small sample of search results.

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Extractive desulfurization of model fuel oil using ester functionalized imidazolium ionic liquids
JJ Raj, S Magaret, M Pranesh, KC Lethesh… - Separation and …, 2018 - Elsevier
A series of ester functionalized imidazolium ionic liquids (ILs) with varying alkyl chain length
were synthesized and characterized. Dicyanamide was chosen as the anion for these series
of ILs. NMR (1 H and 13 C) and elemental analysis were used to confirm the structure of ILs …
Cited by 4 Related articles All 2 versions
Oxidative desulfurization of model fuel in the presence of molecular oxygen over polyoxometalate based catalysts supported on carbon nanotubes
Y Gao, R Gao, G Zhang, Y Zheng, J Zhao - Fuel, 2018 - Elsevier
… reported that vanadium substituted Dawson type emulsion catalyst has positive effects on
extractive catalytic oxidative desulfurization (EODS), the … product H 7 P 2 Mo 17 V 1 O 62 ·mH
2 O was obtained through
extraction with diethyl … Oxidative desulfurization test of model fuel …
Related articles
Screening deep eutectic solvents for extractive desulfurization of fuel based on COSMO-RS model
H Cheng, C Liu, J Zhang, L Chen, B Zhang… - Chemical Engineering and …, 2018 - Elsevier
Screening deep eutectic solvent (DES) is significant for separation process, due to its large
number of potential combinations. In this work, 49 DESs were screened for the
extractive
desulfurization based on the COSMO-RS model. The distribution coefficient, selectivity, and …
Cited by 1 Related articles All 3 versions
Oxidative desulfurization process of model fuel under molecular oxygen by polyoxometalate loaded in hybrid material CNTs@ MOF-199 as catalyst
Y Gao, Z Lv, R Gao, G Zhang, Y Zheng… - Journal of Hazardous …, 2018 - Elsevier
… Mo 17 V 1 O 62 ·mH 2 O was obtained through extraction with diethyl … JiSynthesis of Cu-BTC/Mt
composites porous materials and their performance in adsorptive
desulfurization process …
303-310. [11] FR Moghadam, S Azizian, M Bayat, et al.
Extractive desulfurization of liquid fuel …
[PDF] researchgate.net
Desulfurization of liquid fuels by extraction and sulfoxidation using H2O2 and [CpMo (CO) 3R] as catalysts
D Julião, AC Gomes, M Pillinger, R Valença… - Applied Catalysis B …, 2018 - Elsevier
… By sequentially performing extractive desulfurization and ECODS steps, 83–84% sulfur removal
was achieved for … Oxidative
desulfurization of untreated real liquid fuels … Some initial extraction
studies were performed with MeCN and dimethylformamide (DMF) for 30 min at 50 °C …
Cited by 2 Related articles All 3 versions
Synthesis, characterization, and application of trihexyl (tetradecyl) phosphonium chloride as promising solvent for extractive desulfurization of liquid fuel
S Dharaskar, M Sillanpaa - Chemical Engineering Research and Design, 2018 - Elsevier
… the knowledge of mutual solubilities between water and ILs is of major significance prior to their
consideration for
extractive applications … 6. The desulfurization process went quiet quickly and
S-concentration in
model fuel decreased with increased in extraction time and was …
Related articles All 2 versions
[PDF] researchgate.net
Oxidative-extractive desulfurization of liquid fuel using stannous chloride-acetic acid mixture as catalyst
S Pandey, VC Srivastava - Petroleum Science and Technology, 2018 - Taylor & Francis
… In presence of Lewis acid, organic acids show better extraction characteristics towards sulfur
compound (Chen et al. 2012 Chen, X., D. Song, C. Asumana, and G. Yu. 2012 … 2013. Catalytic
oxidation-
extractive desulfurization for model oil using inorganic oxysalts as oxidant …
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Quantum Chemical Evaluation of Deep Eutectic Solvents for the Extractive Desulfurization of Fuel
DV Wagle, H Zhao, CA Deakyne… - … Sustainable Chemistry & …, 2018 - ACS Publications
… such as oxidative desulfurization (ODS), microbial biodesulfurization, adsorptive desulfurization,
precipitative
desulfurization, extractive desulfurization (EDS), and desulfurization by polymer … ODS
uniquely combines oxidation chemistry with an
extraction process, making it …
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Trihexyl (tetradecyl) phosphonium hexafluorophosphate as an promising Extractant for extractive desulfurization from liquid fuels
SA Dharaskar, M Sillanpaa - Separation Science and Technology, 2018 - Taylor & Francis
… S-compounds, for example, adsorption,[10,11] oxidation,[12] bio-desulfurization,[13] and … for first
time employed as an promising extractant to investigate their
extractive effi- ciency … Also, the effects
of
extraction time, extraction temperature, sulfur com- pounds, ultrasonication, and …
Related articles
[PDF] qu.edu.qa
Desulfurization of the dibenzothiophene)(DBT) by using-based imidazolium-basedionic ionic i liquids (Ils)
B Kazmi, A Zahoor, S Hashmi, ZK Ghouri - 2018 - qspace.qu.edu.qa
… Deep desulfurization of diesel fuel by extraction with ionic liquids … Extractive and
oxidative-
extractive desulfurization of fuels with ionic liquids … 34. Domanska U, WlazÅ‚o M. Effect
of the cation and anion of the ionic liquid on
desulfurization of model fuels …
Related articles All 2 versions
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