scholarly journals Jet mixing when heating oil and fuel oil in storage tanks

2019 ◽  
Vol 124 ◽  
pp. 01047 ◽  
Author(s):  
J. V. Karaeva ◽  
V. O. Zdor ◽  
A. I. Kadyirov ◽  
E. V. Shamsutdinov
Keyword(s):  
Crude Oil ◽  
Bottom Sediments ◽  
Fuel Oil ◽  
Storage Tanks ◽  
Optimum Temperature ◽  
Research Results ◽  
Jet Mixing ◽  
Heating Oil ◽  
Oil Tank ◽  
Time Required

This paper presents the research results of jet mixing and heating processes of crude oil of the Zachebashskoe field (Republic of Tatarstan) and fuel oil M100 in a tank with a capacity of 2000 m3. Circulation systems with nozzle inclination in the range from -25° up to 125° are considered. The presence and washing out of bottom sediments in the tank are modeled. The time required for removing the bottom sediments and for heating the tank to the optimum temperature is determined. The best heating for the tank with oil and fuel oil was observed at the nozzle inclination in the range from -25° up to 60°. The optimal nozzle inclination was 115° for washing out the bottom sediments in the oil tank. To remove sediment in a tank with fuel oil it is recommended to use the same nozzle inclinations as for heating.

scholarly journals Activated Flooded Jets and Immiscible Layer Technology Help to Remove and Prevent the Formation of Bottom Sediments in the Oil Storage Tanks

2021 ◽  
Author(s):  
Georgii V. Nesyn
Keyword(s):  
Crude Oil ◽  
Bottom Sediments ◽  
External Heat ◽  
Storage Tanks ◽  
High Molecular Weight Polymer ◽  
Molecular Weight Polymer ◽  
Oil Storage ◽  
Screw Propeller ◽  
Fit For Purpose ◽  
Tank Bottom

Two flooded jet methods of tank bottom sediments caving based on either screw propeller generation or nozzle jets generated with entering crude head oppose each other. The comparison is not advantageous for the first one. Exceptionally if crude oil contains some concentration of high molecular weight polymer which can perform Drag Reduction. In this case, the jet range increases by many times, thus, upgrading the capability of caving system. Preventing the sedimentation of crude oil heavy components may be put into practice with Immiscible Layer Technology. Before filling the tank with crude oil, some quantity of heavy liquid, that is immiscible with all the components of crude oil, is poured into the tank. The most suitable/fit for purpose and available liquid is glycerin. Neither paraffin and resins, nor asphaltenes can penetrate through the glycerin layer to settle down at the tank bottom because of its density, which is equal to 1.26 g/cm3. Instead, sediments are concentrated at/on the glycerin surface and when it is heated in external heat exchanger all the sediments ought to move upwards with the convection streams. Thus, no deteriorate sediment is formed in the tank bottom.

scholarly journals Isolasi Mikroorganisme Potensial Penghasil Lipase dari Limbah Pengolahan Minyak Kelapa Sawit Malinping

2020 ◽  
Vol 13 (2) ◽  
pp. 228-241
Author(s):  
Ika Rahmatul Layly ◽  
Erma Widyasti ◽  
Deden Rosid Waltam ◽  
Ayi Mufti ◽  
Nita Wiguna ◽  
...  
Keyword(s):  
Crude Oil ◽  
Fats And Oils ◽  
Optimum Temperature ◽  
Processing Waste ◽  
Titration Method ◽  
Optimum Ph ◽  
Oil Tank ◽  
Textile Industries ◽  
Hydrolysis Of ◽  
Optimum Ph And Temperature

AbstrakLipase adalah kelompok enzim yang mengkatalisis hidrolisis rantai panjang trigliserida, lemak, dan minyak menjadi gliserol dan asam lemak dengan adanya air. Sumber lipase untuk industri kebanyakan berasal dari mikroorganisme. Penggunaan lipase pada industri makin meningkat setiap tahunnya meliputi aplikasinya pada industri makanan, pakan, farmasi, pulp, dan kertas, biodiesel, dan industri tekstil. Dalam usaha mendapatkan isolat potensial penghasil lipase untuk hHidrofilisasi serat poliester, pada penelitian ini dilakukan skrining dan isolasi mikroorganisme yang dapat menghasilkan lipase dari limbah pengolahan minyak kelapa sawit di Malinping, Lebak, Banten. Sebanyak 20 isolat bakteri dan 5 isolat jamur yang diperoleh kemudian diuji aktivitas lipasenya menggunakan metode titrasi. Empat isolat bakteri terpilih (Kondensat, Lumpur-Got, Hasil-Buangan, dan Tangki-Crude-Oil) serta lima isolat jamur (Nut-A, Nut-B, Nut-C, Kernel-B, dan Kernel-C) dikarakterisasi pH dan suhu optimum enzimnya. Hasil karakterisasi pH menunjukkan bahwa isolat bakteri Kondensat, Lumpur-Got, Hasil-Buangan, dan Tangki-Crude-Oil mempunyai aktivitas enzim lipase tertinggi pada pH 6. Suhu optimal aktivitas enzim lipase isolat Lumpur-Got-B, Hasil Buangan-B, dan Tangki-Crude-Oil B  pada 40 °°C, sedangkan isolat bakteri-Kondensat-B optimal pada suhu 30 °°C. Aktivitas lipase kelima isolat jamur optimal pada pH 6. Suhu optimal aktivitas lipase isolat jamur Nut-A adalah 40 °°C, sedangkan isolat Nut-B, Nut-C, Kernel-B, dan Kernel-C aktivitasnya optimal pada 50 °°C.Abstract Lipase are enzymes that catalyzed the hydrolysis of triglyceride, fats and oils into glycerol and fatty acids in the presence of water. Industrial Lipase source mostly derived from microbes. Each year, the lipase utilization in industry increased, such as application for foods, feeds, pharmacys, pulp and papers, biodiesel, and textile industries. On this study, a total of 20 bacteria and 5 fungi lipase potential producer were screened and isolated from oil palm processing waste in Malinping, Lebak, Banten, which then tested for its activity using titration method. Selected isolates then were characterized for its enzyme optimum pH and temperature. The optimum pH for isolate Kondensat, Lumpur-Got, Hasil-Buangan and Crude-Oil-Tank lipases are at pH 6, whilst the optimum temperature of isolates Lumpur-Got B, Hasil-Buangan B and Crude-Oil-Tank B were at 40 °°C and bakteri-Kondensat B isolate optimum at 30 °°C. The five fungi characterization shown optimum pH at 6 and 50 °°C except for isolate Nut-A that optimum at 30 °°C.

Implications of Reduced Heating of Heavy Crude Pipeline on Pump Lubrication Systems

2012 ◽  
Author(s):  
Byron G. Lopez
Keyword(s):  
Crude Oil ◽  
Economic Feasibility ◽  
Fuel Oil ◽  
Main Line ◽  
Lubricating Oil ◽  
Mechanical Seals ◽  
Similar System ◽  
Pump Station ◽  
Heating Oil ◽  
Heavy Crude

OCP Ecuador S.A. was designed for transporting heavy crude oil from the Ecuadorian Amazonian forest to the Pacific Ocean, crossing the Andes (highest point @ 4060 masl). OCP have four pumping stations PS1, PS2, PS3, PS4 located across the first 182km. Main pumps were designed with an inherent product circulation from pressure connection via orifice to mechanical seal (API Plan 11) for lubricating and cooling. In order to achieve required viscosity, crude oil from the main line must be heated. Low sulfur crude oil (LSCO) is burned for this purpose. In order to optimize fuel consumption, some efforts were conducted since 2006. The first aim was to increase feed rate of lubricating oil, in order to extend the viscosity within seals up to 700cP. This modification resulted in considerable heat exchange depletion, representing about 50% of costs reduction related to reduce heating of crude oil in the main line. Since 2009, there were some adverse scenarios, which forced the company to seek more and better ways to optimize the fuel oil consumption. These scenarios were: • The continued decline in the quality of crude oil delivered by the shippers quality from shippers. Reduced quality was seen as a threat to the integrity of mechanical seals. • Unavailability of LSCO in the country, • The under-utilization of transport capacity due to low volumes of oil (30% of its capacity). Facing this situation, OCP decided to analyze the technical and economic feasibility of operating without heating oil, in an intermediate pump station (PS3: KP 148 @ 1800 masl). This pump station, at the time of the study, was operated heating crude oil. The greatest difficulty in achieving the goal of reducing heating oil was the maximum viscosity that mechanical seals could withstand, without affecting its integrity. To mitigate this threat, an API plan 32 was designed and implemented in PS3. Simultaneously, the organization was evaluating the possibility of installing a similar system in PS4, where climatic conditions are more adverse than PS3. Based on thermal models and after risk evaluation and cost benefit analysis, OCP decided to run operations accepting the risk of potential damage to the seals in PS4. At the moment, OCP Ecuador S.A. is operated without heating crude oil and API plan 32 was placed on standby, reducing considerably the operating costs. This paper is intended to share the learned lessons, some actions taken; obstacles faced up as well as achieved results in this cost reduction effort.

scholarly journals Energy and Resource Utilization of Refining Industry Oil Sludge by Microwave Treatment

2020 ◽  
Vol 12 (17) ◽  
pp. 6862
Author(s):  
Chien Li Lee ◽  
Cheng-Hsien Tsai ◽  
Chih-Ju G. Jou
Keyword(s):  
Crude Oil ◽  
Microwave Power ◽  
Petroleum Refining ◽  
Microwave Treatment ◽  
Field Energy ◽  
Oily Sludge ◽  
Sludge Sample ◽  
Volatile Hydrocarbons ◽  
Benzene Toluene ◽  
Oil Tank

The oily sludge from crude oil contains hazardous BTEX (benzene, toluene, ethylbenzene, xylene) found in the bottom sediment of the crude oil tank in the petroleum refining plant. This study uses microwave treatment of the oily sludge to remove BTEX by utilizing the heat energy generated by the microwave. The results show that when the oily sludge sample was treated for 60 s under microwave power from 200 to 300 W, the electric field energy absorbed by the sample increased from 0.17 to 0.31 V/m and the temperature at the center of the sludge sample increased from 66.5 °C to 96.5 °C. In addition, when the oily sludge was treated for 900 s under microwave power 300 W, the removal rates were 98.5% for benzene, 62.8% for toluene, 51.6% for ethylbenzene, and 29.9% for xylene. Meanwhile, the highest recovery rates of light volatile hydrocarbons in sludge reached 71.9% for C3, 71.3% for C4, 71.0% for C5, and 78.2% for C6.

CHARACTERIZATION OF SLUDGE WAXES FROM CRUDE OIL STORAGE TANKS HANDLING OFFSHORE CRUDE

1997 ◽  
Vol 15 (7-8) ◽  
pp. 755-764 ◽  
Author(s):  
S.A. Fazal ◽  
R. Rai ◽  
G.C. Joshi
Keyword(s):  
Crude Oil ◽  
Storage Tanks ◽  
Oil Storage

Failure of the Crude-Oil Tank Induced by Two Independent Corrosion Processes

2013 ◽  
Vol 577-578 ◽  
pp. 529-532 ◽  
Author(s):  
Jiří Sís ◽  
Bedřich Votava
Keyword(s):  
Corrosion Rate ◽  
Failure Analysis ◽  
Crude Oil ◽  
Weld Joint ◽  
Heat Affected Zone ◽  
Low Cycle Fatigue ◽  
Basic Material ◽  
Cycle Fatigue ◽  
Concrete Base ◽  
Oil Tank

Corrosion processes are frequent reasons of failure of materials in many applications. Results of failure analysis of the crude-oil tank after more than 30 years of service are summarized in this work. The failure was caused by two different and independent corrosion processes – corrosion in crude oil inside the tank and corrosion from concrete base under the tank. Both corrosion processes usually occur equally over the whole surface. In this case, however, both the corrosion processes occurred with distinctly higher corrosion rate in basic material alongside of heat affected zone of weld joint as well. The crack with length about 420 mm was the final result of these processes. The effect of low-cycle fatigue from filling and draining of crude oil is usually significant and was discussed as well.

Can energy commodities affect energy blockchain-based cryptos?

2019 ◽  
Vol 36 (4) ◽  
pp. 682-699 ◽  
Author(s):  
Ikhlaas Gurrib
Keyword(s):  
Natural Gas ◽  
Crude Oil ◽  
Autoregressive Model ◽  
Structural Breaks ◽  
Price Index ◽  
Principal Component ◽  
Commodity Price ◽  
Var Model ◽  
Content Type ◽  
Heating Oil

Purpose The purpose of this paper is to shed fresh light into whether an energy commodity price index (ENFX) and energy blockchain-based crypto price index (ENCX) can be used to predict movements in the energy commodity and energy crypto market. Design/methodology/approach Using principal component analysis over daily data of crude oil, heating oil, natural gas and energy based cryptos, the ENFX and ENCX indices are constructed, where ENFX (ENCX) represents 94% (88%) of variability in energy commodity (energy crypto) prices. Findings Natural gas price movements were better explained by ENCX, and shared positive (negative) correlations with cryptos (crude oil and heating oil). Using a vector autoregressive model (VAR), while the 1-day lagged ENCX (ENFX) was significant in estimating current ENCX (ENFX) values, only lagged ENCX was significant in estimating current ENFX. Granger causality tests confirmed the two markets do not granger cause each other. One standard deviation shock in ENFX had a negative effect on ENCX. Weak forecasting results of the VAR model, support the two markets are not robust forecasters of each other. Robustness wise, the VAR model ranked lower than an autoregressive model, but higher than a random walk model. Research limitations/implications Significant structural breaks at distinct dates in the two markets reinforce that the two markets do not help to predict each other. The findings are limited by the existence of bubbles (December 2017-January 2018) which were witnessed in energy blockchain-based crypto markets and natural gas, but not in crude oil and heating oil. Originality/value As per the authors’ knowledge, this is the first paper to analyze the relationship between leading energy commodities and energy blockchain-based crypto markets.

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