Evaluating Effect of Different Operational Parameters on Increasing Performance of Condensate Stabilizing Process in Gas Plants (Case Study)

2009 ◽  
Author(s):  
Behrooz Karimkhani ◽  
Zahra Khorrami
Keyword(s):  
Operational Parameters ◽  
Gas Plants

scholarly journals Optimizing Flotation Circuit Recovery by Effective Stage Arrangements: A Case Study

Minerals ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 417 ◽  
Author(s):  
Vahid Radmehr ◽  
Sied Shafaei ◽  
Mohammad Noaparast ◽  
Hadi Abdollahi
Keyword(s):  
General Rule ◽  
Optimal Recovery ◽  
Operational Parameters ◽  
Matlab Software ◽  
One Stage ◽  
Additional Costs ◽  
Circuit Configuration

Recovery is one of the most important metallurgical parameters in designing and evaluating flotation circuits. The present study used the recovery arrangement for two and three stage circuits to evaluate the effect of stage recovery on the overall circuit recovery and flotation circuit configuration. The results showed that mainly the highest recovery value should be assigned to the rougher stage in order to achieve the maximum overall circuit recovery. Countercurrent rougher-cleaner and rougher-scavenger circuits, in which recycling streams step back one stage at a time, follow a general rule for the assignment of recovery. Finally, a flotation plant containing six flotation banks was examined as a case study. A program for calculating total circuit recovery, for all possible combinations of recovery was developed in MATLAB software. 720 recovery combinations were evaluated. The results showed that optimal recovery allocation in stages could be effective in achieving overall circuit recovery. It was shown that the use of a large number of stages in some of the flotation circuits leads to the loss of equipment and additional costs. The proposed approach can be employed as an effective tool for designing and optimizing various flotation circuits and their operational parameters.

Parameters affecting nitrifying biofilm reactors

1994 ◽  
Vol 29 (10-11) ◽  
pp. 1-11 ◽  
Author(s):  
M. Boller ◽  
W. Gujer ◽  
M. Tschui
Keyword(s):  
High Energy ◽  
Experimental Investigations ◽  
Operational Parameters ◽  
Oxygen Utilization ◽  
Trickling Filters ◽  
Biofilm Reactors ◽  
Biomass Activity ◽  
Rotating Biological Contactors ◽  
High Energy Consumption

The variables affecting nitrification in biofilms are identified on a theoretical basis. The influence of various design and operational parameters which affect the resulting substance fluxes into and out of the biofilm and the biomass activity regarding nitrification are illustrated with the help of experimental investigations with plastic media trickling filters, rotating biological contactors and different aerated biofilters. The results of experiments with these systems in tertiary nitrification applications reveal process limitations and technical measures to enhance nitrification performance in each system. In a case study, a comparison between the different biofilm processes and activated sludge alternatives showed that biofilm systems may lead to remarkably smaller reactor volumes, but high energy consumption due to unfavorable oxygen utilization.

scholarly journals Application of electrocoagulation for water conditioning

2019 ◽  
Vol 6 (2) ◽  
pp. 59-70
Author(s):  
Hana Posavčić ◽  
Ivan Halkijević ◽  
Živko Vuković
Keyword(s):  
Water Source ◽  
Point Of View ◽  
Pollutant Removal ◽  
Operating Costs ◽  
Mechanical Equipment ◽  
Operational Parameters ◽  
Economic Point ◽  
Water Conditioning ◽  
Electrocoagulation Process

Water conditioning is a method of removing altering minerals, chemicals and contaminants from a water source and it is carried out on facilities equipped with the corresponding electro-mechanical equipment. Although efficient, conventional processes typically use several complex devices connected to a single functional unit, which are often expensive to maintain and occupy large areas. Therefore, the aim of this paper is to present the electrocoagulation (EC) method as an alternative to conventional water conditioning processes. The examples of previous studies of the EC process application is presented in this paper. The focus of the paper is to investigate the influence of the certain operational parameters such as pH, temperature, electrode material, etc., on the efficiency of pollutant removal such as Escherichia coli and elevated concentrations of iron, arsenic, manganese, ammonia and others. Further, an economic analysis is made, which, from an economic point of view, shows when it is feasible to use the EC in the conditioning process. Furthermore, a case study of electrocoagulation process for Total Nitrogen (TN) removal is presented. According to results, 69.7 % of TN was removed with aluminum electrodes after 240 minutes. For this case, total operating costs were 7.60 €/m3.

Multiplicity in Municipal Administration and Its Implication on Urban Planning Functions in Nigeria

2021 ◽  
Vol 12 (1) ◽  
pp. 1-11
Author(s):  
Oluwole Daramola ◽  
Ayodeji Olatunji ◽  
Ademola A. Akanmu ◽  
Adewale Yoade ◽  
Deborah Bunmi Ojo ◽  
...  
Keyword(s):  
Urban Planning ◽  
Conflict Of Interest ◽  
The State ◽  
Operational Parameters ◽  
Legislative Reform ◽  
Municipal Administration ◽  
Multiple Components ◽  
The Relationship ◽  
Activity Areas

This study assessed the effects of multiple components of municipal administrations on the functions of urban planning agencies in Nigeria, using Osun State as the case study. It examined the profile of the professionals across the levels of planning agencies in the state, the key activity areas of the planning agencies, operational parameters of the planning agencies, and the relationship between the planning agencies. Data used for the study were sourced from questionnaire administered on the heads of all the 35 planning agencies in the state. The study revealed that the agencies experienced conflict of interest in their operations and the reason for that was mostly jurisdictional. Also, the agencies seldom related with one another. The study concluded that the structure of municipal administration in Nigerian is responsible for proliferation of planning agencies and, consequently, the duplication of planning functions in the state, nay, Nigeria. It recommended, among others, legislative reform for effective municipal administration in the state and Nigeria, as a whole.

Coal Pulverizer Monitoring and Analysis: A Case Study

2006 ◽  
Author(s):  
George Q. Zhang ◽  
Paul C. Thulen
Keyword(s):  
Data Acquisition System ◽  
Health Condition ◽  
Vibration Monitoring ◽  
Health Indicator ◽  
Operational Parameters ◽  
Operation Condition ◽  
The Common ◽  
Maintenance Problem ◽  
Mill Roller

This paper describes a case study of coal pulverizer monitoring and analysis. It represents the partial work of a project called “Mill Advisor” which investigated the common operational and maintenance problems of the coal pulverizer. Combining vibration monitoring and operational parameters such as flow rate, pressure drop and temperature measurement as well as grinding process modeling, this project intends to develop a system which closely monitors the operating condition of the pulverizer online, extracts the operational and maintenance knowledge, estimates the health condition of the equipment, and schedules maintenance based on the operation condition of the pulverizer and power generation demand. Specifically, this case study covers the following topics: 1)coal mill operational and maintenance problem identification; 2)sensing and data acquisition system design and implementation; 3)mill roller wear modeling and life span estimation; and 4)mill health indicator or availability proposition. On-site tests were conducted on a CE843RS pulverizer in a power plant.

Coiled Tubing Dewaxing Operations: Case Studies in Reduced Production Wells of Northeast India

2021 ◽  
Author(s):  
Ishaan Singh ◽  
Akash Ramesh Pathak ◽  
Juhi Kaushik ◽  
Bholanath Bandyopadhyay ◽  
Danny Aryo Wijoseno ◽  
...  
Keyword(s):  
Crude Oil ◽  
Northeast India ◽  
Outer Diameter ◽  
Fluid Temperature ◽  
Equipment Failure ◽  
Operational Parameters ◽  
Coiled Tubing ◽  
Asphaltene Deposition ◽  
Pumping Rates

Abstract Executing interventions in wells encrusted with wax is challenging because experience with global coiled tubing (CT) dewaxing operations is limited, and equipment failure and stuck pipe risks are high. With few jobs performed worldwide, CT dewaxing (hot oil circulation with CT) operations are largely unexplored. The deviated wells in a field in northeast India pose several challenges including completely seized wellbore due to paraffin/asphaltene deposition, previous failed well cleanout attempts, very slow and low bottomhole assembly (BHA) penetration, pumping corrosive and flammable low wax crude (LWC) through CT, high chances of CT getting stuck, and pumping heated 69°C LWC through the CT. This case study delivers insights about design, safety, and operational considerations for 1.5-in. CT dewaxing and nitrogen lift operations in a subhydrostatic well in the field. The objective of this CT dewaxing and nitrogen kickoff operation was to clear the well of paraffin/asphaltene/wax to 1600 m and activate it with nitrogen, and this paper describes solutions for cleaning out and nitrogen-lifting wells with declining production due to paraffin and asphaltene deposition. One well is described in this case study, but this approach can be used perform CT intervention in similar wells. For this case, simulations were sensitized to identify the best combination of pumping rates, CT speeds, and fluid temperature to remove deposits hindering BHA penetration. This study proposes prevention measures using appropriate grounding and procedures, which determine if the crude oil can be pumped through CT. By use of this methodology, 581 dewaxing runs have been performed in 78 wells. Extensive on-job experience and lessons learnt by performing this operation over the last 3 years bring excellent results and prevent misruns. In many cases, production has been restored from nil; several examples feature a fivefold improvement of productivity thanks to this intervention method. Optimized operational parameters such as CT speed, pumping rates, and the use of smaller outer diameter BHAs doubled operational efficiency during those operations. In addition, strict application of the recommendations prevented the occurrence of operational problems such as stuck CT, crude oil flashing, sand bridging, and equipment failure.

Case study: the characteristics of the biodegradable waste for the anaerobic digestion plant in Lisbon area

2008 ◽  
Vol 58 (8) ◽  
pp. 1563-1568 ◽  
Author(s):  
F. Vaz ◽  
A. Torres ◽  
C. Neiva Correia
Keyword(s):  
Anaerobic Digestion ◽  
Seasonal Variations ◽  
Seasonal Effects ◽  
Chemical Characteristics ◽  
Operational Parameters ◽  
Biodegradable Waste ◽  
Physical Chemical ◽  
Solids Content ◽  
The One

Taking into account the physical-chemical characteristics of the SC-OFMSW processed at Valorsul's anaerobic digestion plant, the influence of seasonal effects was studied. The waste presents a good quality, with a putrescible content of around 90%. In terms of chemical characteristics, the waste composition is similar to the one referred in the literature. The results show that seasonal variations seem not to affect the SC-OFMSW characteristics. The waste is very soluble and for that reason the solids content in the digester is low (TS in the digestor is 2.8%). The production of biogas is higher than the one predicted in the design operational parameters. Consequently, smaller quantities of compost are produced.

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