scholarly journals Experimental Study of Square Inlets Effect on the Performances of Gas–Liquid Cylindrical Cyclone Separators (GLCC)

2020 ◽  
Vol 3 (SI1) ◽  
pp. First
Author(s):  
Ho Minh Kha ◽  
Nguyen Thanh Nam ◽  
Vo Tuyen ◽  
Nguyen Tan Ken
Keyword(s):  
Separation Efficiency ◽  
Oil Field ◽  
Air Bubbles ◽  
Swirl Intensity ◽  
Cylindrical Cyclone ◽  
Petroleum Companies ◽  
Symmetric Square ◽  
Two Phases ◽  
Intensity Decay ◽  
Two Phases Flow

In the gas-oil field, the gas-liquid cylindrical cyclone (GLCC) separator has potentially replaced the traditional separator that is used over the century. It is also interesting for petroleum companies in recent years because of the effect of the oil world price. However, the behavior of phases in the equipment is very rapid, complex, and unsteady, which may cause the difficulty of enhancing the performance of the separation phases. The much research demonstrates that the geometry and the number of the inlet is probably the most important factor that impacts directly to the performance of separation of phases of the device. The main goal of the research paper is to deeply understand the effect of different geometrical configurations of the square inlet on hydrodynamics and performances for two phases flow (air-water). Two different inlet configurations are constructed, namely: One square inlet with the gradually reduced nozzle and two symmetric square inlets with the gradually reduced nozzle. As a result, the separation efficiency of the device will be higher when using two symmetric inlets, and we suggest the application of two symmetric square inlets type that is the same angle of inclination and the area of the nozzle with the unique inlet configuration to improve separation efficiency in GLCC. Such an inlet structure leads to lower swirl intensity decay than one inlet configuration. It also creates a more axis-symmetric flow at the centerline, which would improve the uplift of air bubbles in the performance of GLCC. Besides, this study can be viewed as a padding step to optimizing the operative parameters of GLCC in further study.

The Effect of the Different Inlet's Structures of the Gas-Liquid Cylindrical Cyclone (GLCC) Separator

2019 ◽  
Vol 894 ◽  
pp. 112-125
Author(s):  
Minh Kha Ho ◽  
Thanh Nam Nguyen ◽  
Ngoc Phuong Nguyen ◽  
Vo Tuyen
Keyword(s):  
Oil And Gas ◽  
Separation Efficiency ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
Cylindrical Cyclone ◽  
Symmetric Square ◽  
Two Phases ◽  
And Performance ◽  
Carry Over ◽  
Two Phases Flow

The inlet’s geometry is always the core factor that directly affects hydrodynamics and separation efficiency of the cyclone separation types. The Gas-Liquid Cylindrical Cyclone (GLCC) separators have been developed in recent years to separate into single phases of multiphase mixtures in the oil and gas industry. It is used to substitute for the traditional separator that is used over 100 years. However, the action of phases in the instrument is very fast, complicated and unsteady which may cause the difficulty to enhance the performance of the separation phases. Besides, the effect of inlet’s structures over its hydrodynamics and performance is not fully understood. The target of this study is to use experimental modeling for two phases flow (gas-water) to evaluate the effect of inlet geometrical modifications in the reduction of liquid carry-over (LCO). Four different inlet configurations are constructed, namely: One circular inlet, two symmetric circular inlets, one square inlet and two symmetric square inlets with the gradually reduced nozzle. From the results presented in this work, we propose the use of two symmetric inlets to enhance the separator efficiency because of their effects.

scholarly journals Experimental study of circular inlets effect on the performances of Gas-Liquid Cylindrical Cyclone separators (GLCC)

2020 ◽  
Vol 3 (SI1) ◽  
pp. First
Author(s):  
Ho Minh Kha ◽  
Nguyen Thanh Nam ◽  
Vo Tuyen ◽  
Nguyen Tan Ken
Keyword(s):  
Oil And Gas ◽  
New Technology ◽  
Oil And Gas Industry ◽  
Critical Element ◽  
Gas Industry ◽  
Cylindrical Cyclone ◽  
Inlet Geometry ◽  
Petroleum Companies ◽  
Two Phases ◽  
The One

The gas-liquid cylindrical cyclone (GLCC) separators is a fairly new technology for the oil and gas industry. The current GLCC separator, a potential alternative for the conventional one, was studied, developed, and patented by Chevron company and Tulsa University (USA). It is used for replacing the traditional separators that have been used over the last 100 years. In addition, it is significantly attracted to petroleum companies in recent years because of the effect of the oil world price. However, the behavior of phases in the instrument is very rapid, complex, and unsteady, which may cause the difficulty of enhancing the performance of the separation phases. The multiple recent research shows that the inlet geometry is probably the most critical element that influences directly to the performance of separation of phases. Though, so far, most of the studies of GLCC separator were limited with the one inlet model. The main target of the current study is to deeply understand the effect of different geometrical configurations of the circular inlet on performances of GLCC by the experimental method for two phases flow (gas-liquid). Two different inlet configurations are constructed, namely: One circular inlet and two symmetric circular inlets. As a result, we propose the use of two symmetric circular inlets to enhance separator efficiency because of their effects.

NUMERICAL SIMULATION OF TWO-PHASES FLOW ON PUMPS INLET SYSTEM FOR SHALLOW WATER

2019 ◽  
Author(s):  
Livio Sebastián Maglione ◽  
Guillermo Muschiatto ◽  
Raúl Alberto DEAN
Keyword(s):  
Numerical Simulation ◽  
Shallow Water ◽  
Inlet System ◽  
Two Phases ◽  
Two Phases Flow

Numerical Simulation of Double Inlet Cylinder Cyclone Using CFD

2013 ◽  
Vol 275-277 ◽  
pp. 558-561
Author(s):  
Xiao Ming Yuan ◽  
Hui Jun Zhao ◽  
Jing Yi Qu
Keyword(s):  
Flow Field ◽  
Volume Fraction ◽  
Separation Efficiency ◽  
Separation Performance ◽  
Two Phase ◽  
Phase Volume Fraction ◽  
Fluid Field ◽  
Cylindrical Cyclone ◽  
Discrete Phase ◽  
New Type

Designed a new type of double inlet cylindrical cyclone. For search the separation performance in a cylindrical cyclone. By use of CFD，applied the RSM turbulence model and Euler two-phase flow method and ASM which to simulate separation process and flow field within a double inlet cylindrical cyclone. Then compared with the single inlet cyclone，obtained velocity distribution. Analyzed the differences of discrete phase volume fraction between different viscosity. The results show that the new-style cyclone caught more stable fluid field and higher separation efficiency. And when the viscosity is about 0.75 kg/m•s， the separation efficiency and stability of the oil core is higher. Preliminary flow field law is shown up.

FIRST AFRICAN OIL SPILL COOPERATIVE: CLEAN NIGERIA ASSOCIATES

1987 ◽  
Vol 1987 (1) ◽  
pp. 151-156
Author(s):  
Godwin E. Omene ◽  
E. C. Odogwu ◽  
Tom E. Allen
Keyword(s):  
Oil Spills ◽  
Oil Industry ◽  
General Purpose ◽  
Oil Field ◽  
Competitive Bidding ◽  
Oil Companies ◽  
The Past ◽  
Port Harcourt ◽  
Petroleum Companies ◽  
Production Areas

ABSTRACT In November 1981 the petroleum companies operating in Nigeria formed a cooperative with the general purpose of developing an oil industry-sponsored organization for combating oil spills. The organization was named Clean Nigeria Associates (CNA). Individual oil companies operating in Nigeria now have and have had in the past the capability to combat oil spills, but most were unprepared to handle major oil spills. Thus, the main thrust of the cooperative was to develop an equipment stockpile and response capability commensurate with major spill risks. Through competitive bidding, Halliburton Nigeria, Ltd. was selected as the cooperative contractor. Agreements were formally signed in September 1984. Since that time the equipment required by the association was procured by Halliburton and put in place at two locations, Warri and Port Harcourt. These two locations were selected because of their proximity to major production areas. Bases were established at Nigerian Ports Authority facilities which were set aside for oil field operations. Thus, equipment warehouses are in excellent positions to respond to marine spills, and to respond to land spills by road. The equipment stockpile consists of 27,000 ft of booms, 28 skimmers—both for protected waters and offshore, 4,000 bales of sorbents, 26 pumps, 14 boats (ten 15 ft and four 49 ft) and an assortment of vehicles and other support equipment. CNA has a dedicated staff of 38. The staff consists of management, equipment operators, mechanics, boat crews, and support personnel. Since December 1984, training of national personnel on spill response and safety has been a high priority and has continued to this date.

CFD Simulation and Experimental Study on Solid-Liquid Hydrocyclone

2012 ◽  
Vol 562-564 ◽  
pp. 1606-1609
Author(s):  
Si Huang ◽  
Yue Le ◽  
Luo Li
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Experimental Study ◽  
Cfd Simulation ◽  
Separation Efficiency ◽  
Test System ◽  
Equation Model ◽  
Liquid Particle ◽  
Two Phases ◽  
Solid Liquid

This paper presents a numerical simulation and experimental study on a solid-liquid hydrocyclone. In the simulation, the standard k-ε turbulence model and the zero-equation model are employed to compute the flow field of the two phases in the hydrocyclone under different conditions, such as viscosity of the liquid, particle size and flow rate. In the experiment, a hydrocyclone is manufactured and measured for the separation efficiency and pressure drop in the test system. The simulation result of hydrocyclone performance matches well with the experimental data.

Wet Gas Separation in Gas-Liquid Cylindrical Cyclone (GLCC) Separator

2007 ◽  
Author(s):  
Robiro Molina ◽  
Shoubo Wang ◽  
Luis E. Gomez ◽  
Ram S. Mohan ◽  
Ovadia Shoham ◽  
...  
Keyword(s):  
High Pressure ◽  
Separation Efficiency ◽  
Mechanistic Model ◽  
Velocity Ratio ◽  
Wet Gas ◽  
Cylindrical Cyclone ◽  
Improved Performance ◽  
Carry Over ◽  
Operational Envelope ◽  
Annular Film

A novel Gas Liquid Cylindrical Cyclone (GLCC©), equipped with an Annular Film Extractor (AFE), for wet gas applications has been developed and studied experimentally and theoretically. Detailed experimental investigation of the modified GLCC has been carried out for low and high pressure conditions. The results show expansion of the operational envelope for liquid carry-over, and improved performance of the modified GLCC. For low pressures, the modified GLCC can remove all the liquid from the gas stream, resulting in zero liquid carry-over. For high pressure conditions, the GLCC with a single AFE has separation efficiency > 80% for gas velocity ratio of < 3. A mechanistic model and an aspect ratio design model for the modified GLCC has been developed, including the analysis of the AFE. The model predictions agree with the experimental data within ± 15% for low pressure and ± 25% for high pressure conditions.

Wet Gas Separation in Gas-Liquid Cylindrical Cyclone Separator

2008 ◽  
Vol 130 (4) ◽  
Author(s):  
Robiro Molina ◽  
Shoubo Wang ◽  
Luis E. Gomez ◽  
Ram S. Mohan ◽  
Ovadia Shoham ◽  
...  
Keyword(s):  
High Pressure ◽  
Separation Efficiency ◽  
Mechanistic Model ◽  
Velocity Ratio ◽  
Wet Gas ◽  
Cylindrical Cyclone ◽  
Improved Performance ◽  
Carry Over ◽  
Operational Envelope ◽  
Annular Film

A novel gas-liquid cylindrical cyclone (GLCC©, ©The University of Tulsa, 1994), equipped with an annular film extractor (AFE), for wet gas applications has been developed and studied experimentally and theoretically. Detailed experimental investigation of the modified GLCC has been carried out for low and high pressure conditions. The results show expansion of the operational envelope for liquid carry-over and improved performance of the modified GLCC. For low pressures, the modified GLCC can remove all the liquid from the gas stream, resulting in zero liquid carry-over (separation efficiency=100%). For high pressure conditions, the GLCC with a single AFE has separation efficiency >80% for gas velocity ratio, vsg/vann≤3. A mechanistic model and an aspect ratio design model for the modified GLCC have been developed, including the analysis of the AFE. The model predictions agree with the experimental data within ±15% for low pressure and ±25% for high pressure conditions.

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