scholarly journals Improving the environmental friendliness of a solid fuel boiler house using SHF energy

2021 ◽  
Vol 937 (2) ◽  
pp. 022090
Author(s):  
R V Kondratev
Keyword(s):  
Moisture Content ◽  
Solid Fuel ◽  
Boiler House ◽  
Flue Gases ◽  
High Moisture Content ◽  
High Moisture ◽  
Boiler Plant ◽  
Air Heater ◽  
Heating Device ◽  
Harmful Emissions

Abstract To reduce harmful emissions, solid fuel consumption and increase the efficiency of the boiler plant, an automated system with a combined heating device and a condensing air heater connected in series was designed. In a combined heating device (SHF + flue gases) equipped with a magnetron, quality control and additional preparation of solid fuel with a high moisture content (up to 80%) for combustion are carried out. In the condensing air heater, the heat of the flue gases coming into it from the combined heating deviceand the latent heat of vaporization are extracted. The use of this system allows reducing the moisture content and temperature of flue gases, the volume of harmful emissions from the boiler plant in the form of nitrogen oxides and dioxides (NOx), carbon oxides (CO), ash, volatile coke residues. By increasing the volume and reducing the corrosiveness of the condensate formed from the flue gases in the condensation air heater during the drying process of fuel with a high moisture content, it can be subsequently used as process and make-up water. Practical application of the system makes it possible to reduce the cost of generating heat energy by the boiler house by increasing the use of low-calorie fuel with a high moisture content in the form of waste from logging, wood processing, low-grade coal and peat, which also has a positive environmental effect.

scholarly journals Tapping Indonesia's bioenergy potential: Solid biofuel production from banana leaves by employing hydrothermal treatment

2016 ◽  
Author(s):  
Baskoro Lokahita ◽  
Anissa Nurdiawati ◽  
Alexander Mosqueda ◽  
Kunio Yoshikawa
Keyword(s):  
Moisture Content ◽  
Hydrothermal Treatment ◽  
Solid Fuel ◽  
Biomass Energy ◽  
Biofuel Production ◽  
High Moisture Content ◽  
High Moisture ◽  
Banana Plant ◽  
Solid Biofuel ◽  
Banana Leaves

Agricultural and agroindustrial wastes are increasingly being used for the generation of fuel products. Banana residues has a potential to be used as biomass energy sources in tropical country due to its availability, fast growing characteristic of banana plant, carbon neutrality and the fact that each banana plant bears only one stem of fruit. Thermal conversion of biomass to higher energy density fuels is gaining a growing interest as it is sustainable and has a potential to reduce greenhouse gasses. However, many forms of biomass in the waste stream, including banana residues, have very high moisture content, which makes them both inefficient to store, transport, and process using conventional technology. The hydrothermal treatment (HT) is known for converting high moisture content solid wastes into dried, uniform, pulverized, coallike solid fuel. In the present study, banana leaves was characterized and subjected to HT in a batch process to evaluate the suitability of these biomass sources for solid fuel production. Banana leaves was treated via HT at the temperatures of 180 and 200 ° C with the holding time of 30 min. The results showed that HT can increase the carbon and energy content of banana leaves, while the ash content decreased with the increased of temperature. The calculated value for theoretical potential power generation from treated banana leaves is 3.8 GW. These results showed that the production of solid fuel from banana leaves by employing hydrothermal treatment can contribute to the development of renewable energy, especially in Indonesia.

scholarly journals Combustion Experiments On A Solid Fuel With Low Sulphur Content

2020 ◽  
Vol 180 ◽  
pp. 01015
Author(s):  
Tudor Prisecaru ◽  
Adrian Adam ◽  
Lucian Mihăescu ◽  
Ionel Pîşă ◽  
Elena Pop ◽  
...  
Keyword(s):  
Experimental Study ◽  
Power Plant ◽  
Sulfur Dioxide ◽  
Moisture Content ◽  
Solid Fuel ◽  
Pilot Plant ◽  
Sulphur Content ◽  
Pollutant Emissions ◽  
High Moisture Content ◽  
High Moisture

Research was carried out at the experimental installation defined by the 2 MW furnace pilot from the Politehnica University of Bucharest and ICEMENRG institute who was involved for measurements. The purpose of the experimental study is to confirm that the use of a coal with low sulphur content S<0.08% is possible without the use of sulphurpurification installations for industrial purposes. But, the high moisture content of the coal has imposed the problem of its compatibility with a certain milling technology. The pilot plant is equipped with fan mill and pre-drying tower. Under these conditions, this installation allows the grinding of fuels with high moisture content. The experiments focused on the process of ignition, combustion and pollutant emissions, with the exemplification, in particular, of the emission of sulfur dioxide. Also, the outbreak temperatures and the slugging temperature were monitored. For this purpose, the outbreak of the pilot boiler was equipped with all the equipment necessary to follow these parameters. The experiments have shown positive aspects to the burning of this fuel, thus laying the foundations of future tests at industrial installations (first of all, the power plant from Deva is considered).

Drying kinetics of processed natural coffee with high moisture content

2017 ◽  
Vol 12 (3) ◽  
pp. 400 ◽  
Author(s):  
Valdiney Cambuy Siqueira ◽  
Flávio Meira Borém ◽  
Guilherme Euripedes Alves ◽  
Eder Pedroza Isquierdo ◽  
Afonso Celso Ferreira Pinto ◽  
...  
Keyword(s):  
Moisture Content ◽  
Drying Kinetics ◽  
High Moisture Content ◽  
High Moisture ◽  
Kinetics Of

Objetivou-se, com o presente trabalho, propor um novo método de processamento e secagem, assim como avaliar o comportamento dos grãos submetidos a este processo, por meio da taxa de redução de água e do ajuste de diferentes modelos matemáticos aos dados experimentais da secagem. Os frutos colhidos no estágio maduro foram divididos em três lotes. O primeiro foi seco continuamente à temperatura de 40±1 °C. O segundo consiste na secagem do café natural até os teores de água de 0,56±0,02, 0,41±0,02, 0,28±0,02 e 0,20±0,02 decimal (base seca, b.s.), seguido de beneficiamento e secagem contínua nas temperaturas de 35±1 ºC e 40±1 ºC. O terceiro lote correspondeu à secagem contínua do café descascado e desmucilado na temperatura de 40±1 °C. Em todos os lotes, a secagem foi encerrada quando os grãos atingiram o teor de água de 0,12±0,05 (b.s.). Aos dados experimentais da secagem foram ajustados dez modelos matemáticos utilizados para representação da secagem dos produtos agrícolas. Além da representação da cinética de secagem foi avaliada a taxa de redução de água dos grãos. Conclui-se que a taxa de redução de água é maior para a temperatura de secagem de 40±1 °C, especialmente para maiores teores de água. O tempo total de secagem do café beneficiado com alto teor de água é expressivamente reduzido, quando comparado ao tempo de secagem completa do café natural. O modelo de Midilli descreve satisfatoriamente a cinética de secagem do café beneficiado.

Optimization of drying of low-grade coal with high moisture content using a disc dryer

2014 ◽  
Vol 124 ◽  
pp. 267-274 ◽  
Author(s):  
Seung-Hyun Moon ◽  
In-Soo Ryu ◽  
Seung-Jae Lee ◽  
Tae-In Ohm
Keyword(s):  
Moisture Content ◽  
Low Grade ◽  
High Moisture Content ◽  
High Moisture

scholarly journals Key Metallurgical Parameters of Fe-Ni Production During 1984–1997 and 2007–2017 at the Ferronickel Smelter in Drenas

2020 ◽  
Vol 67 (2) ◽  
pp. 73-77
Author(s):  
Zarife Bajraktari-Gashi ◽  
Muharrem Zabeli ◽  
Behram Halilaj
Keyword(s):  
Moisture Content ◽  
Casting Process ◽  
The Philippines ◽  
High Moisture Content ◽  
High Moisture ◽  
Nickel Ores ◽  
Iron Nickel ◽  
Rotary Kilns ◽  
The Republic ◽  
Laterite Ore

AbstractDuring 1984–1997, the ferronickel plant in Drenas used iron-nickel ore from the mines of the Republic of Kosovo: Glavica and Çikatove (Dushkaje and Suke) mines. However, during the years 2007–2017, when the plant started operating from the cessation of production, which was from 1998 to 2007, some types of iron-nickel ores from different countries began to be used, starting from iron-nickel ores from Kosovo, iron-nickel ores from Albania, ores from Indonesia, ores from the Philippines, ores from Guatemala, ores from Turkey and ores from Macedonia. The ore composition, however, is mainly oxide-laterite ore. Iron-nickel ores in the plant are characterised by high moisture content, a very important factor influencing the process of scraping the charge in rotary kilns and presenting in general. Among the iron-nickel ore used in the ferronickel plant, the ores from Albania are characterised due to their low moisture content when compared with the other ores as well as the high content of iron oxides, which affect the temperature rise inside the furnaces, as the iron ores play an important role in the pre-casting process in rotary kilns.

scholarly journals Mycoflora of sawn timbers in Benin City

2014 ◽  
Vol 23 (2) ◽  
pp. 89-95
Author(s):  
J. A. Okhuoya ◽  
S. O. Itaman
Keyword(s):  
Moisture Content ◽  
Pleurotus Ostreatus ◽  
Fungal Species ◽  
High Moisture Content ◽  
High Moisture ◽  
Benin City ◽  
The Poor ◽  
High Incidence

In a fungal suryey of sawn timbers in scattared localities in Benin City, fungal species isolated were mainly members of <i>Hyphomycetes</i>, with few <i>Ascomycetes</i> and<i> Basidiomycetes</i>. Cellulolytic abilities of isolates were determined and found to be highest in a basidiomycete, <i>Pleurotus ostreatus</i>. The high incidence of these isolates was traced to the poor ventillation in the shades where the timbers arę sold and the high moisture content of timber before display for sale.

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