Chemical Engineering Research Bulletin最新文献_第10页

Prediction of Stand Pipe Pressure Using Conventional Approach 用常规方法预测立管压力

Chemical Engineering Research Bulletin Pub Date : 2009-07-30 DOI: 10.3329/CERB.V13I1.2703

Dipankar Chowdhury, P. Skalle, Mohammed M. Rahman

{"title":"Prediction of Stand Pipe Pressure Using Conventional Approach","authors":"Dipankar Chowdhury, P. Skalle, Mohammed M. Rahman","doi":"10.3329/CERB.V13I1.2703","DOIUrl":"https://doi.org/10.3329/CERB.V13I1.2703","url":null,"abstract":"In rotary drilling operation, the hydraulic circuit typically consists of stand pipe, rotary hose, swivel, Kelly, drill pipe, drill collar, drill bit, and the annulus between the drillstring and the open hole or the casing. Stand Pipe Pressure, abbreviated as SPP, is defined as the total frictional pressure drop in the hydraulic circuit. SPP, an important drilling parameter in selecting proper mud weight, can be calculated using di erent rheological models. In this paper, the results obtained using the four widely used rheological models namely the Newtonian model, the Bingham plastic model, the Power law model and the Herschel-Bulkley model are presented. The rheological data used are collected by performing circulation test while drilling a vertical well in the Po valley, Italy. The rheological constants associated with each of the four models are calculated using regression analysis, For the three flow rates used during the circulation test, SPP has been predicted with a maximum error of 1.2% when compared with the measured values. The Bingham plastic model produces best SPP estimates for all the three flow rates for the drilling condition considered.","PeriodicalId":9756,"journal":{"name":"Chemical Engineering Research Bulletin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83615386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Aerobic Pollution Abatement of Pulp mill Effluent with the White Rot fungus Phanerochaete chrysosporium in Three-phase Fluidized Bed Bioreactor 三相流化床生物反应器中白腐菌对纸浆厂废水好氧污染的治理

Chemical Engineering Research Bulletin Pub Date : 2009-07-08 DOI: 10.3329/CERB.V13I1.2613

B. Jaganathan, S. M. Hossain, K. M. M. S. Begum, N. Anantharaman

{"title":"Aerobic Pollution Abatement of Pulp mill Effluent with the White Rot fungus Phanerochaete chrysosporium in Three-phase Fluidized Bed Bioreactor","authors":"B. Jaganathan, S. M. Hossain, K. M. M. S. Begum, N. Anantharaman","doi":"10.3329/CERB.V13I1.2613","DOIUrl":"https://doi.org/10.3329/CERB.V13I1.2613","url":null,"abstract":"The ligninolytic fungus Phanerochaete chrysosporium was used to treat the pulp and paper-mill effluent. It was pelletized and used for batch and continuous experiments in a two-litre fluidized bed bioreactor. The continuous experiment was initiated with concentrated effluent without any extra carbon source and the average removal of color was 3.8%. Then, it was fed with 50% diluted effluent which was enriched with glucose. At first, the glucose was consumed by the fungus, which is indicated by a COD removal of 38.5% and a 26.5% removal of color. This indicates the need for an extra carbon source for the fungal treatment. Using the mycelial mass in suspension, two experiments were carried out. The best results were obtained with 20% fungus and shaking of the effluent. During the last three days of the experiment using the mycelium mass the average removal of color, COD and BOD was 86.4%, 78.8% and 70.5%, respectively. The result indicates the potential of Phanerochaete chrysosporium for use in the treatment of pulp and paper-mill effluent. Keywords: Pulp and paper-mill effluent, fungal treatment, Phanerochaete chrysosporium . DOI = 10.3329/cerb.v13i1.2613 Chemical Engineering Research Bulletin 13 (2009) 13-16","PeriodicalId":9756,"journal":{"name":"Chemical Engineering Research Bulletin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87605903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Laboratory Scale Production of Commercial Grade Calcium Carbonate from Lime-Soda Process 石灰-苏打法生产商品级碳酸钙的实验室规模研究

Chemical Engineering Research Bulletin Pub Date : 2008-10-29 DOI: 10.3329/CERB.V12I0.1490

Islam, A. Quader

引用次数: 4

POTABLE WATER FROM INDUSTRIAL WASTEWATER 工业废水中的饮用水

Chemical Engineering Research Bulletin Pub Date : 2008-10-29 DOI: 10.3329/CERB.V12I0.1493

Ali, Khan, T. Afroz

引用次数: 2

Effect of Operating Variables on Regeneration of Base-Oil from Waste Oil by Conventional Acid-Clay Method 操作变量对常规酸-粘土法再生废油中基础油的影响

Chemical Engineering Research Bulletin Pub Date : 2008-10-29 DOI: 10.3329/CERB.V12I0.1494

M. Rahman, T. Siddique, S. Samdani, Kazi Bayzid Kabir

引用次数: 43

Applicability of Air pollution Modeling in a Cluster of Brickfields in Bangladesh 空气污染模型在孟加拉砖厂群的适用性

Chemical Engineering Research Bulletin Pub Date : 2008-10-29 DOI: 10.3329/CERB.V12I0.1495

Shoeb Ahmed, I. Hossain

{"title":"Applicability of Air pollution Modeling in a Cluster of Brickfields in Bangladesh","authors":"Shoeb Ahmed, I. Hossain","doi":"10.3329/CERB.V12I0.1495","DOIUrl":"https://doi.org/10.3329/CERB.V12I0.1495","url":null,"abstract":"Air pollution is one of the major environmental problems now days, especially for developing countries such as Bangladesh and Brickfields have been identified as a vital pollutant source of the major cities of the country. Verification of the applicability of an effective air quality model in Bangladesh condition, especially for brickfield pollution was the main concern of this work. To achieve that objective, ambient pollutant concentrations were measured experimentally and compared with the results generated through modeling using Industrial Source Complex (ISC3) model. Air sampling was done at different locations in a cluster of brickfields of 41 brick kilns near Amin Bazar, Savar using Gastec tubes and High volume sampler. Gastec tubes were used for gaseous pollutants and High volume sampler was used for Total Suspended Particulates (TSP). Gaseous pollutants included Sulfur dioxide, Carbon monoxide, and Hydrocarbons. Those pollutant data at different locations on different days were compared with simulated value generated through ISC3. Industrial Source Complex (ISC3) model was found very effective and appropriate both for gaseous pollutants and particulate matter for brickfield pollution in Bangladesh and which indicates the prospect of utilizing this model for different condition and purposes in Bangladesh. From both the experimental and simulated data, particulate matter had been identified as the most important pollutant in that region which is urgently needed to be taken care of.","PeriodicalId":9756,"journal":{"name":"Chemical Engineering Research Bulletin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85611213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 40

Novel Ideas on Engineering Education in Bangladesh 孟加拉工程教育的新思路

Chemical Engineering Research Bulletin Pub Date : 2008-10-29 DOI: 10.3329/CERB.V12I0.1492

Kazi Bayzid Kabir, Khan, Iqbal Mahmud

引用次数: 5

CHEMICAL ANALYSIS OF ORDINARY PORTLAND CEMENT OF BANGLADESH 孟加拉国普通硅酸盐水泥的化学分析

Chemical Engineering Research Bulletin Pub Date : 2008-10-29 DOI: 10.3329/CERB.V12I0.1491

Ali, I. Khan, M. I. Hossain

引用次数: 28