Petroleum Chemistry最新文献_第8页

Mitigating Liquid Carry-Over and Foaming in a Gas Processing Plant through the Installation of Vertical Scrubbers 通过安装立式洗涤器减轻天然气加工厂的液体携带和泡沫问题

IF 1.4 4区工程技术

Petroleum Chemistry Pub Date : 2024-05-23 DOI: 10.1134/s0965544124020178

Fenk A. Sulaiman, Hiwa Sidiq, Aryan A. Ali, Mirei Mohamad

{"title":"Mitigating Liquid Carry-Over and Foaming in a Gas Processing Plant through the Installation of Vertical Scrubbers","authors":"Fenk A. Sulaiman, Hiwa Sidiq, Aryan A. Ali, Mirei Mohamad","doi":"10.1134/s0965544124020178","DOIUrl":"https://doi.org/10.1134/s0965544124020178","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>Gas-liquid separators often encounter the challenge of liquid carry-over, where small liquid droplets become entrained in the produced gas stream. This phenomenon can lead to foaming and reduced capacity in downstream absorption processes, as observed in Iraq’s Khor Mor gas-condensate processing plant. To assess whether liquid carry-over contributes to the foaming issue in the sweetening tower, this study analyzed the liquid droplet size distribution in the gas phase and the gas/liquid separation efficiency of the upstream Alpha, Bravo #1, Bravo #2, and Charlee separators feeding the tower. The analysis was conducted by using the industry-standard process software, Horizontal Vessel and ProSeparator correlations within Aspen HYSYS v.14. The study revealed that Alpha, Bravo #1, and Bravo #2 separators were unable to eliminate all liquid droplets within the specified size, failing to achieve the required efficiency. In response, the study proposes a vertical scrubber design with a standard mesh mist extractor, applying the Arnold–Stewart semi-empirical procedure. The design demonstrated a gas/liquid separation efficiency of 99% under current and future conditions. These findings suggest that the proposed design can serve as an optimal solution to control liquid carry-over, maintain high gas/liquid separation efficiency, and prevent foaming, even with an increase in the vessel inlet flow rate over time.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"10 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141147699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ethylene/Propylene Copolymerization and Their Terpolymerization with 5-Ethylidene-2-norbornene over Catalytic Systems Based on Half-Sandwich Titanium Complexes with Organoaluminum and Organoboron Activators 乙烯/丙烯与 5-亚乙基-2-降冰片烯在基于有机铝和有机硼活化剂的半三明治钛络合物催化体系上的共聚及其三聚反应

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-05-18 DOI: 10.1134/S0965544124010158

E. E. Faingol’d, S. L. Saratovskikh, S. A. Zhukov, A. N. Panin, I. V. Zharkov, O. N. Babkina, N. N. Lashmanov, N. M. Bravaya

{"title":"Ethylene/Propylene Copolymerization and Their Terpolymerization with 5-Ethylidene-2-norbornene over Catalytic Systems Based on Half-Sandwich Titanium Complexes with Organoaluminum and Organoboron Activators","authors":"E. E. Faingol’d, S. L. Saratovskikh, S. A. Zhukov, A. N. Panin, I. V. Zharkov, O. N. Babkina, N. N. Lashmanov, N. M. Bravaya","doi":"10.1134/S0965544124010158","DOIUrl":"10.1134/S0965544124010158","url":null,"abstract":"Half-sandwich titanium complexes, specifically Cp*TiCl3 and Cp*Ti[O(2,6-iPr2-Ph)]Cl2, were investigated as catalytic precursors for the synthesis of ethylene/propylene copolymers and ethylene/propylene/5-ethylidene-2-norbornene terpolymers. For this purpose, a variety of activators were tested: modified polymethylaluminoxane; boron-containing compounds such as B(C6F5)3 and Ph3CB(C6F5)4 in combination with triisobutylaluminum (TIBA); isobutylaluminoxane (IBAO), and isobutylaluminum aryloxide (2,6-tBu2,4-Me-PhO-)AliBu2 (AlBHT). In the copolymerization of ethylene and propylene, the catalysts exhibited high activity when activated by MMAO-12 and TIBA+Ph3CB(C6F5)4 but low activity with TIBA+B(C6F5)3 and AlBHT. With IBAO as an activator, these catalysts were found to be totally ineffective. The catalysts exhibited low activity in terpolymerization. It was further revealed that more than one type of active sites was generated in the catalytic systems: these sites were responsible for simultaneous formation of low-molecular-weight and ultrahigh-molecular-weight polymers. The composition of the copolymers as well as their thermophysical and physicomechanical properties were shown to depend on the type and composition of the catalytic system.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"64 4","pages":"500 - 510"},"PeriodicalIF":1.3,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141125640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of the Severity of Reaction Conditions on the Promotional Effects of Tin in Pt–Sn/γ-Al2O3 Catalysts in Propane Dehydrogenation 丙烷脱氢过程中反应条件的苛刻程度对 Pt-Sn/γ-Al2O3 催化剂中锡的促进作用的影响

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-05-18 DOI: 10.1134/S0965544124010079

Parisa Moghimpour Bijani, Abbas Ali Khodadadi, Saeed Sahebdelfar

{"title":"Influence of the Severity of Reaction Conditions on the Promotional Effects of Tin in Pt–Sn/γ-Al2O3 Catalysts in Propane Dehydrogenation","authors":"Parisa Moghimpour Bijani, Abbas Ali Khodadadi, Saeed Sahebdelfar","doi":"10.1134/S0965544124010079","DOIUrl":"10.1134/S0965544124010079","url":null,"abstract":"The influence of the severity of reaction conditions on the promotional effects of tin in bimetallic Pt–Sn/γ-Al2O3 catalysts in the propane dehydrogenation was studied over a wide range of reaction conditions (550–600°C, H2/C3H8 = 0.4–1.5 mol/mol). The catalysts containing 0.5 wt % Pt with variable (0–1.0 wt %) Sn loading were prepared by sequential impregnation and characterized by N2-physisorption, TPR, TPD, EDX, and TEM techniques. When 0.25 wt % tin was added to the Pt/γ-Al2O3 catalyst, at H2/C3H8 molar ratios of 0.8 and 1.5 and all temperatures, a sharp (up to 100%) increase in the propylene selectivity was observed. The propylene yield vs. Sn loading curves showed maxima near the Sn/Pt weight ratio of 1 independently of operating conditions. Upon addition of the optimum amount of Sn, the first-order decay rate constant decreased from 0.15 to 0.066 h–1 at 550°C and H2/C3H8 = 0.4, which roughly corresponded to doubling of the catalyst lifetime under this condition. The promoting effect of Sn on the catalyst performance was more pronounced under more severe reaction conditions required for higher propane conversions, i.e., at higher temperatures and lower H2/C3H8 ratios in the feed.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"64 2","pages":"309 - 321"},"PeriodicalIF":1.3,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141125163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinetic Relationships of the Adsorption of Lysozyme and Bovine Serum Albumin onto Zeolites of BEA and MFI Structural Types 溶菌酶和牛血清白蛋白在 BEA 和 MFI 结构类型的沸石上的吸附动力学关系

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-05-18 DOI: 10.1134/S0965544124010110

L. F. Atyaksheva, I. V. Dobryakova, Z. S. Enbaev, T. M. Roshchina, D. A. Fedosov

引用次数: 0

Effects of the Type and Loading of Rare-Earth Metals (Pr, Yb, Ho) on the para-Selectivity of HTsVM Zeolite in Toluene Ethylation 稀土金属（Pr、Yb、Ho）的类型和负载对 HTsVM 沸石在甲苯乙化中的对位选择性的影响

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-05-14 DOI: 10.1134/S0965544124010134

E. S. Mammadov, T. O. Gahramanov, N. F. Akhmedova, S. E. Mammadov, A. Z. Mamedova, E. I. Ahmadov

{"title":"Effects of the Type and Loading of Rare-Earth Metals (Pr, Yb, Ho) on the para-Selectivity of HTsVM Zeolite in Toluene Ethylation","authors":"E. S. Mammadov, T. O. Gahramanov, N. F. Akhmedova, S. E. Mammadov, A. Z. Mamedova, E. I. Ahmadov","doi":"10.1134/S0965544124010134","DOIUrl":"10.1134/S0965544124010134","url":null,"abstract":"The study describes toluene ethylation using TsVM zeolite (SiO2/Al2O3 = 40) and a series of TsVM-based catalysts modified with rare-earth metals. To investigate the effects of the type and loading of rare-earth metals in the HTsVM catalyst on the selectivity towards total ethyltoluenes and p-ethyltoluene, the reaction was carried out in a continuous-flow fixed-bed reactor at atmospheric pressure and temperatures of 300–400°C. The HTsVM was modified with praseodymium, ytterbium, and holmium nitrates. The physicochemical and textural properties of the catalysts were characterized by XRD, FTIR spectroscopy, NH3-TPD, and low-temperature nitrogen adsorption. The specific surface area, acidity, total pore volume, and mesopore volume were found to decrease with an increase in the holmium loading of the catalyst. The zeolite catalysts loaded with 4.0–5.0 wt % Ho exhibited optimum stability and high p-ethyltoluene selectivity (79.5–81.4%) in combination with adequate toluene conversion (19.4–20.3%).","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"64 2","pages":"258 - 266"},"PeriodicalIF":1.3,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140938333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Geochemistry of Biomarkers and Asphaltenes of Precambrian Organic Matter in the Aldan–Maya Depression (Siberian Platform) 阿尔丹-马亚凹陷（西伯利亚地台）前寒武纪有机物质的生物标志物和沥青质地球化学

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-05-14 DOI: 10.1134/S0965544124010031

I. D. Timoshina, L. S. Borisova, V. R. Livshits

引用次数: 0

Metal-Containing Granulated Yh Zeolites with Hierarchic Structure in Isophorone Aromatization 异佛尔酮芳香化过程中具有层次结构的含金属粒状 Yh 沸石

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-05-14 DOI: 10.1134/S0965544124020038

N. G. Grigor’eva, V. Yu. Kirsanov, L. F. Korzhova, S. G. Karchevskii, A. N. Khazipova, S. V. Bubennov, V. R. Bikbaeva, D. V. Serebrennikov, B. I. Kutepov

{"title":"Metal-Containing Granulated Yh Zeolites with Hierarchic Structure in Isophorone Aromatization","authors":"N. G. Grigor’eva, V. Yu. Kirsanov, L. F. Korzhova, S. G. Karchevskii, A. N. Khazipova, S. V. Bubennov, V. R. Bikbaeva, D. V. Serebrennikov, B. I. Kutepov","doi":"10.1134/S0965544124020038","DOIUrl":"10.1134/S0965544124020038","url":null,"abstract":"The physicochemical properties of a series of catalysts based on granulated Na-Yh zeolite with the hierarchic (micro–meso–macro) pore structure (Na-Yh, HNa-Yh, MgO/Na-Yh, La2O3/Na-Yh, TiO2/Na-Yh) and the activity and selectivity of these catalysts in isophorone aromatization were studied. MgO/Na-Yh and La2O3/Na-Yh zeolites with high content of basic sites and low content of Brønsted acid sites are the most effective in the synthesis of 3,5-dimethylphenol: The 3,5-dimethylphenol formation selectivity reaches 63–69% at 87–94% isophorone conversion. In the presence of Na-Yh zeolite containing both acid and base sites, the prevalent reactions are isophorone isomerization and synthesis of trimethylbenzenes. The modification of Na-Yh with titanium oxide leads to an increase in the content of acid sites on the TiO2/Na-Yh surface and to the prevalence of the aromatization to form trimethylbenzenes. In the presence of HNa-Yh containing a set of the strongest Brønsted and Lewis acid sites, isophorone transforms into a mixture of polymethylbenzenes.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"64 2","pages":"267 - 277"},"PeriodicalIF":1.3,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140938404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of the Method for the Preparation of Synthetic Aluminosilicate on the Properties of ZSM-5 合成硅酸铝的制备方法对 ZSM-5 性能的影响

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-05-14 DOI: 10.1134/S0965544124020063

A. Kh. Ishkildina, O. S. Travkina

引用次数: 0

Effects of Gel Preparation Conditions on the Crystallization of SAPO-11 Molecular Sieves 凝胶制备条件对 SAPO-11 分子筛结晶的影响

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-05-14 DOI: 10.1134/S0965544124010092

M. R. Agliullin, D. V. Serebrennikov, A. N. Khazipova, R. Z. Kuvatova, B. I. Kutepov

引用次数: 0

Synthesis of Granular MCM-22 Zeolite with a Hierarchical Porous Structure 合成具有分层多孔结构的粒状 MCM-22 沸石