scholarly journals Modelling of pollutants concentrations from the biomass combustion process

2011 ◽  
Vol 32 (4) ◽  
pp. 423-433 ◽  
Author(s):  
Aneta Magdziarz ◽  
Małgorzata Wilk ◽  
Monika Zajemska
Keyword(s):  
Computer Simulation ◽  
Coming Out ◽  
Combustion Process ◽  
Chemical Properties ◽  
Biomass Combustion ◽  
Physical And Chemical Properties ◽  
Influence Of Temperature ◽  
Complex Phenomena ◽  
Physical And Chemical ◽  
And Chemical Properties

Modelling of pollutants concentrations from the biomass combustion process This paper presents possibilities for of numerical modelling of biomass combustion in a commercially available boiler. A sample of biomass was tested with respect to its physical and chemical properties. Thermogravimetry studies of biomass were carried out. Computer simulation makes it possible to analyse complex phenomena which are otherwise difficult to observe. The aim of this work was to model biomass combustion to predict the amount of pollutants generated (NOx, CO, SO2) in the exhaust gases coming out from boilers The calculations were made using the CHEMKIN program. Results of calculations were performed taking into account the influence of temperature, pressure and residence time.

scholarly journals Assessment of the Possibility of Using Hemp Biomass (Cannabis Sativa L.) for Energy Purposes: A Case Study

2019 ◽  
Vol 9 (20) ◽  
pp. 4437 ◽  
Author(s):  
Artur Kraszkiewicz ◽  
Magdalena Kachel ◽  
Stanisław Parafiniuk ◽  
Grzegorz Zając ◽  
Ignacy Niedziółka ◽  
...  
Keyword(s):  
Cannabis Sativa ◽  
Combustion Process ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Pellet Production ◽  
Physical And Chemical ◽  
Power Boiler ◽  
Biomass For Energy ◽  
And Chemical Properties

During testing, the possibility of using hemp biomass for energy purposes was assessed. The criteria assessed were the physical and chemical properties of hemp biomass, as well as the combustion process of straw and briquettes made of it in a low-power boiler. The results were made and compared with currently applicable standards. Technical and chemical properties of hemp biomass are comparable with the best plants used for energy purposes. Studies have also shown the susceptibility of hemp biomass compaction. However, large emissions recorded during the combustion of the tested forms of biofuels from hemp straw in light of applicable standards disqualify this fuel for use in grate-type heating devices with air fed under the grate. It would be advisable to carry out research on the total costs of pellet production and their use in heating devices with a retort burner, while taking into account this biofuel’s ashes’ susceptibility of sintering.

Study on Methanol/Biodiesel for Agricultural Diesel Engines Applications

2014 ◽  
Vol 912-914 ◽  
pp. 475-478
Author(s):  
Rui Na Li ◽  
Zhong Wang ◽  
Ling Chuan Hou ◽  
Ming Di Li
Keyword(s):  
Diesel Engine ◽  
Combustion Process ◽  
Chemical Properties ◽  
Pressure Rise ◽  
Calculation Model ◽  
Maximum Pressure ◽  
Physical And Chemical Properties ◽  
Cylinder Pressure ◽  
Physical And Chemical ◽  
And Chemical Properties

According to the physical and chemical properties of methanol, fuel was prepared using the methanol and biodiesel. The physical and chemical properties of the blends were investigated, and the combustion process calculation model of 186FA diesel engine was established. The spray characteristics and in-cylinder pressure were calculated of diesel engine fueled with the blend of biodiesel added with 15% methanol at 3000r/min, 5.7kW. The results show that, the spray penetration shortens and the sauter mean diameter reduces when diesel engine fueled with methanol/biodiesel, besides, the maximum cylinder pressure reduces. However, the maximum pressure rise rate increases.

Statistical criteria of stellar population types

1966 ◽  
Vol 24 ◽  
pp. 101-110
Author(s):  
W. Iwanowska
Keyword(s):  
Stellar Population ◽  
Chemical Properties ◽  
Spectrophotometric Study ◽  
Physical And Chemical Properties ◽  
Population Type ◽  
The Galaxy ◽  
Distribution Parameters ◽  
Physical And Chemical ◽  
Statistical Criteria ◽  
And Chemical Properties

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.

Response of corn (Zea mays L.) to various organic-based fertilizers in marginal upland of Sta. Rita, Samar

2017 ◽  
pp. 31-43
Author(s):  
Berta Ratilla ◽  
Loreme Cagande ◽  
Othello Capuno
Keyword(s):  
Block Design ◽  
Management Strategies ◽  
Chemical Properties ◽  
Organic Fertilizers ◽  
Growth And Yield ◽  
Physical And Chemical Properties ◽  
Total N ◽  
Randomized Complete Block Design ◽  
Physical And Chemical ◽  
And Chemical Properties

Organic farming is one of the management strategies that improve productivity of marginal uplands. The study aimed to: (1) evaluate effects of various organic-based fertilizers on the growth and yield of corn; (2) determine the appropriate combination for optimum yield; and (3) assess changes on the soil physical and chemical properties. Experiment was laid out in Randomized Complete Block Design, with 3 replications and 7 treatments, namely; T0=(0-0-0); T1=1t ha-1 Evans + 45-30-30kg N, P2O5, K2O ha-1; T2=t ha-1 Wellgrow + 45-30-30kg N, P2O5, K2O ha-1; T3=15t ha-1 chicken dung; T4=10t ha-1 chicken dung + 45-30-30kg N, P2O5, K2O ha-1; T5=15t ha-1 Vermicast; and T6=10t ha-1 Vermicast + 45-30-30kg N, P2O5, K2O ha-1. Application of organic-based fertilizers with or without inorganic fertilizers promoted growth of corn than the control. But due to high infestation of corn silk beetle(Monolepta bifasciata Horns), its grain yield was greatly affected. In the second cropping, except for Evans, any of these fertilizers applied alone or combined with 45-30-30kg N, P2O5, K2O ha-1 appeared appropriate in increasing corn earyield. Soil physical and chemical properties changed with addition of organic fertilizers. While bulk density decreased irrespective of treatments, pH, total N, available P and exchangeable K generally increased more with chicken dung application.

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