Track topics on Twitter Track topics that are important to you
The gas sweetening unit of phase 2 and 3 in South Pars Gas Field (Asalouyeh, Iran) was first simulated to investigate the effect of mono ethylene glycol (MEG) in the amine loop. MEG is commonly injected into the system to avoid hydrate formation while a few amounts of MEG is usually transferred to amine gas sweetening plant. This paper aims to address the points where MEG has negative effects on gas sweetening process and what the practical ways to reduce its effect are. The results showed that in the presence of 25% of MEG in amine loop, HS absorption from the sour gas was increased from 1.09 to 3.78 ppm. Also, the reboiler temperature of the regenerator (from 129 to 135 °C), amine degradation and required steam and consequently corrosion (1.10 to 17.20 mpy) were increased. The energy consumption and the amount of amine make-up increase with increasing MEG loading in amine loop. In addition, due to increasing benzene, toluene, ethylbenzene and xylene (BTEX) and heavy hydrocarbon solubility in amine solution, foaming problems were observed. Furthermore, side effects of MEG presence in sulfur recovery unit (SRU) such as more transferring BTEX to SRU and catalyst deactivation were also investigated. The use of total and/or partial fresh MDEA, install insulation and coating on the area with the high potential of corrosion, optimization of operational parameters and reduction of MEG from the source were carried out to solve the problem. The simulated results were in good agreement with industrial findings. From the simulation, it was found that the problem issued by MEG has less effect when MEG concentration in lean amine loop was kept less than 15% (as such observed in the industrial plant). Furthermore, the allowable limit, source and effects of each contaminant in amine gas sweetening were illustrated.
This article was published in the following journal.
Name: Chemistry Central journal
In the search for improved laboratory methods for diagnosis of ethylene glycol poisoning, the in vivo formation of a glucuronide metabolite of ethylene glycol was hypothesised. Chemically pure standar...
A series of novel porphyrin dyes (XW42-XW44) containing oligo(ethylene glycol) units have been designed and synthesized. For XW42, two triethylene glycol (TEG) units were introduced into the phenothia...
In contrast to acetal groups, aminal moieties are almost unknown in polymer chemistry. The aminal-protected isopropyl-hexahydro-pyrimidine glycidyl amine (PyGA) for the anionic ring-opening polymeriza...
The Crabtree's reagent catalyzes the isomerization of N-sulfonyl 2,2-disubstituted aziridines to allyl amines. The selectivity of allyl amine vs imine is very high (up to 99/1). The unprecedented isom...
In this present work nanocomposite composed of Mn-ZnO capped with Poly Ethylene Glycol (PEG) was utilized as heterogeneous catalyst for the transesterification of oil extracted from Nannochloropsis oc...
Colonoscopy is a useful tool used in modern medicine and it is increasingly being employed for both diagnostic and therapeutic purposes. (Polyethelene glycol)PEG is very often used for bow...
This is a single arm, open label study designed to evaluate the safety and efficacy of propylene glycol-free melphalan hydrochloride in patients with AL amyloidosis. Treatment will be comp...
This study is a single-center, open-label study of high-dose Melphalan HCl for injection (propylene glycol free Melphalan) conducted in 24 patients, who have symptomatic multiple myeloma a...
Myocardial protection is of crucial importance for surgical coronary revascularization in patients with ischaemic heart diseases. The investigators proposed loop isolation-based uploading ...
Diverting ileostomies are created to protect a rectal anastomosis or in situations with a risk of intestinal perforation. Currently, the application of a rod to hinder slippage of the loop...
A colorless, odorless, viscous dihydroxy alcohol. It has a sweet taste, but is poisonous if ingested. Ethylene glycol is the most important glycol commercially available and is manufactured on a large scale in the United States. It is used as an antifreeze and coolant, in hydraulic fluids, and in the manufacture of low-freezing dynamites and resins.
Polyester polymers formed from terephthalic acid or its esters and ethylene glycol. They can be formed into tapes, films or pulled into fibers that are pressed into meshes or woven into fabrics.
Preparative treatment of transplant recipient with various conditioning regimens including radiation, immune sera, chemotherapy, and/or immunosuppressive agents, prior to transplantation. Transplantation conditioning is very common before bone marrow transplantation.
Ophthalmic solutions that include LUBRICANTS and WETTING AGENTS such as POLYETHYLENE GLYCOL; HYPROMELLOSE; GLYCEROL; PROPYLENE GLYCOL. They are used to treat conditions caused by deficient tear production such as DRY EYE SYNDROME.
An ethylene compound with two hydroxy groups (-OH) located on adjacent carbons. They are viscous and colorless liquids. Some are used as anesthetics or hypnotics. However, the class is best known for their use as a coolant or antifreeze.
Collaborations in biotechnology
Commercial and academic collaborations are used throughout the biotechnology and pharmaceutical sector to enhance research and product development. Collaborations can take the form of research and evaluation agreements, licensing, partnerships etc. ...