scholarly journals COMBUSTION PERFORMANCE OF SYNGAS FROM BIOMASS WASTE IN GAS BURNER SYSTEM/PRESTASI PEMBAKARAN SYNGAS DARI SISA BIOJISIM DALAM SISTEM PEMBAKAR GAS

2018 ◽  
Vol 80 (5) ◽  
Author(s):  
Mohd Oryza Mohd Mokhtar ◽  
Mohammad Nazri Mohd Ja’afar ◽  
Mustafa Yusoff ◽  
Mazlan Said ◽  
Muhammad Roslan Rahim ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Sulfur Dioxide ◽  
Nitrogen Oxide ◽  
Combustion Temperature ◽  
Fossil Fuel ◽  
Biomass Waste ◽  
Gas Combustion ◽  
Combustion Performance ◽  
Positive Effects ◽  
Gas Burner

Syngas from biomass residues is an alternative fuel to address the ever-increasing fossil fuel supply problem and the issue of releasing toxic gases from the fossil fuel burning process. Syngas is also a renewable fuel and features environmentally friendly fuel. This study was conducted to investigate the performance of the syngas produced from oil palm shells (PKS) using fluidized bed gasifier. In this study, the produced syngas was tested for its combustion performance from the aspect of gas combustion temperature and resulting emission concentrations such as nitrogen oxide (NOx), carbon monoxide (CO) and sulfur dioxide (SO2). The resulting syngas was studied at different ratio of air velocities to fuels. From the test, the ratio of velocity of air to fuel affects the gas combustion temperature and emission emission concentration. By increasing the air velocity to fuel ratio during the gasification process produces more positive effects primarily in improving the temperature of the gas burner combustion and reducing carbon monoxide (CO) emissions. However, the concentration of sulfur dioxide release (SO2) and nitrogen oxide (NOx) increase.

KESAN PEMBAKARAN PADA KEADAAN NISBAH KESETARAAN ɸ=0.8333 MENGGUNAKAN DWI PEMUSAR ALIRAN JEJARIAN

2017 ◽  
Vol 79 (2) ◽  
Author(s):  
Muhammad Roslan Rahim ◽  
Mohammad Nazri Mohd Jaafar
Keyword(s):  
Carbon Monoxide ◽  
Nitrogen Oxide ◽  
Equivalence Ratio ◽  
The Other ◽  
Combustion Performance ◽  
Hot Air ◽  
Unburned Hydrocarbons

Formation of nitrogen oxide (NOx), carbon monoxide (CO) and other emissions is increasing dramatically in the atmosphere. Due to this pressing issue, a study on combustion performance was conducted using a double radial swirler. In this study, a weak swirler with an angle of 30º is set as a primary swirler and strong swirlers each with an angle of 40º, 50º and 60º are set as secondary swirler. Combinations of these swirlers have increased internal recirculation of hot air and help to complete the mixing of fuel and air during combustion. Results show that the combination of 30º/60º swirler produced the best, more stable and shorter flame than the other combinations. Formation of NOX from the 30º/60º swirlers at equivalence ratio of 0.8333 is 27.3% lower than that from the combined 30º/40º swirlers. Other emissions such as CO, CO2 and UHC (Unburned Hydrocarbons) also show a reduction of 12.71%, 10.6% and 5.3%, respectively in the 30º/60º swirlers compared to those from the 30º/40º swirlers.

Kinetics of catalytic reduction of nitrogen oxide by carbon monoxide on CuO/Al2O3 catalyst

1983 ◽  
Vol 48 (11) ◽  
pp. 3202-3208 ◽  
Author(s):  
Zdeněk Musil ◽  
Vladimír Pour
Keyword(s):  
Carbon Monoxide ◽  
Nitrogen Oxide ◽  
Rate Equation ◽  
Catalytic Reduction ◽  
Zero Order ◽  
Spectroscopic Measurements ◽  
First Order ◽  
Ir Spectroscopic ◽  
Kinetics Of ◽  
Al2o3 Catalyst

The kinetics of the reduction of nitrogen oxide by carbon monoxide on CuO/Al2O3 catalyst (8.36 mass % CuO) were determined at temperatures between 413 and 473 K. The reaction was found to be first order in NO and zero order in CO. The observed kinetics are consistent with a rate equation derived from a mechanism proposed on the basis of IR spectroscopic measurements.

Utilization of the By-Products for Simultaneous Purification of Sulfur Dioxide and Nitrogen Oxide in Bio-Trickling Process

2013 ◽  
Vol 779-780 ◽  
pp. 1220-1223
Author(s):  
Wen Bo Zhou ◽  
Ping Zou ◽  
Pei Shi Sun ◽  
Xiao Yi Bi ◽  
Yong Yang Mao ◽  
...  
Keyword(s):  
Sulfur Dioxide ◽  
Nitrogen Oxide ◽  
Ammonium Nitrate ◽  
Ammonium Sulfate ◽  
Purification Process ◽  
Copper Ore ◽  
By Products

The potential of using the waste from simultaneous NOx and SO2 purification bio-trickling process to leach copper ore and to make fertilizer was investigated. It was found there were two main exhausted by-products in the purification process: the acidic liquid in desulfurization tower and the alkalescent liquid in denitrogenation tower. Through operation of leaching the oxide ore sample containing 2.58% copper by the acidic liquid, the effective grade of the metal to be extracted reached 28.37% by weight. With adding proportional dose of ammonia into the alkalescent liquid or the acidic liquid and going through evaporation and concentration, crystal products of ammonium sulfate and ammonium nitrate were generated, which can be used in fertilizer manufacturing.

Development of Straw Briquette Boiler

2012 ◽  
Vol 608-609 ◽  
pp. 339-343
Author(s):  
Peng Ma ◽  
Hui Li Liu ◽  
Sheng Yong Liu
Keyword(s):  
Sulfur Dioxide ◽  
Nitrogen Oxide ◽  
Combustion Efficiency ◽  
National Standard ◽  
Processing Methods ◽  
Standard Requirement ◽  
Incomplete Combustion ◽  
Combustion Loss

According to the specialty of straw briquette combustion, thermodynamic calculating and special processing methods, the special boiler which applies to cornstalk briquettes is designed and made. It has double fire grates which have function of smoke removing. Moreover, the combustion efficiency of this boiler is higher and the incomplete combustion loss of solid and gas is less. The contents of fume, nitrogen oxide and sulfur dioxide in the vent smoke are low enough to accords with national standard requirement. So it will have a splendid future to use straw as the substitute of coal in our country.

The Effect of Biomass Shapes on Combustion Characteristic in Updraft Chamber

2021 ◽  
Vol 13 (4) ◽  
Author(s):  
Wasu Suksuwan ◽  
◽  
Mohd Faizal Mohideen Batcha ◽  
Arkom Palamanit ◽  
Makatar Wae-hayee ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Combustion Chamber ◽  
Combustion Temperature ◽  
Ambient Air ◽  
Combustion Characteristics ◽  
Flue Gases ◽  
Combustion Characteristic ◽  
Rubber Wood ◽  
Chip Shape ◽  
Biomass Sample

Combustion of agricultural residues and wastes for energy applications is still popular. However, combustion of biomass with different shapes leads to many side effects such as agglomeration, emission and incomplete combustion. The aim of this study was therefore to investigate the effects of biomass shapes on combustion characteristics in an updraft combustion chamber. The rubber wood chip, coconut shell, oil palm empty fruit bunch, corn straw, rubber wood sawdust, and mixed palm cake were used as fuel and they were categorized as 3 shapes namely, chip shape, fiber shape, and powder shape. The biomass sample was combusted in simple cylindrical shape combustion chamber. The diameter of combustion chamber was 20 cm and its height was 160 cm. The biomass sample (moisture content below 20%) with amount of 1 kg was used to perform the experiment. The ambient air that had velocity of 0.50, 0.75 and 1.00 m/s (corresponding to an equivalence ratio of 1-3.5) was supplied to combustion chamber. The temperature at different positions along combustion chamber height and the properties of flue gases (carbon monoxide) were then measured. The results showed that the biomass shape had effect on combustion characteristics. Combustion of fiber shape biomass led to low combustion temperature, while the carbon monoxide in flue gases was high. This indicates the improper combustion process. The chip shape biomass was well combusted at a higher air velocity and the flue gases had lowest carbon monoxide. The highest combustion temperature was obtained from combustion of powder shape biomass. However, it led to the problem of unburned biomass such in case of sawdust. This is because the sawdust powder was carried from combustion chamber before burning completely.

scholarly journals Analysis Combustion Efficiency in a Fluidized-Bed Combustor With a Modified Perforated Plate for Air Distribution

2021 ◽  
Author(s):  
Erdiwansyah Erdiwansyah ◽  
Mahidin Mahidin ◽  
Husni Husin ◽  
Nasaruddin Nasaruddin ◽  
Muhtadin Muhtadin ◽  
...  
Keyword(s):  
Combustion Chamber ◽  
Combustion Temperature ◽  
Perforated Plate ◽  
Combustion Efficiency ◽  
Biomass Waste ◽  
Transfer Rates ◽  
Burn Out ◽  
Maximum Combustion Temperature ◽  
Solid Biomass ◽  
Fluidized Bed Combustor

Abstract Combustion efficiency is one of the most important parameters, especially in the FBC combustion chamber. Investigations into the efficiency of combustion in FBC fuels using solid biomass waste fuels in recent years are increasingly in demand by researchers around the world. Specifically, this study aims to calculate the combustion efficiency in the FBC combustion chamber. Combustion efficiency is calculated based on combustion results from modification of hollow plates in the FBC combustion chamber. The modified hollow plate aims to control combustion so that the fuel incorporated can burn out and not saturate. The combustion experiments were tested using palm oil biomass solid waste fuels such as PKS, OPM, and EFB. The results of the measurements showed that the maximum combustion temperature for MCC fuel reached 863oC for M1 and 887oC on M2. The maximum combustion temperature measurements for M1 and M2 from OPM fuel testing reached 898oC and 858oC, respectively, while the maximum combustion temperature for EFB fuel was 667oC andM2 847oC, respectively. The rate of combustion efficiency with the modification of the hole plate in the FBC combustion chamber reached 96.2%. Thermal efficiency in FBC combustion chamber for OPM 72.62%, MCC 70.03%, and EFB 52.43%. The highest heat transfer rates for OPM fuel reached 7792.36 w/m, MCC 7167.38 w/m, and EFB 5127.83 w/m. Thus, modification of the holed plate in the FBC chamber showed better performance of the plate without modification.

scholarly journals IoT Based Underground Drainage Monitoring System

2020 ◽  
Vol 9 (3) ◽  
pp. 247-249
Keyword(s):  
Carbon Monoxide ◽  
Nitrogen Oxide ◽  
Monitoring System ◽  
Hydrogen Sulphide ◽  
Sulphur Dioxide ◽  
Smart Phone ◽  
Threshold Value ◽  
Ammonia Nitrogen ◽  
Network System

Underground drainage monitoring system plays an important role in keeping the cities clean and healthy. Compared to other countries, India consists of highest number of sewage workers. Exposure of sewage workers to poisonous gases like hydrogen sulphide, sulphur dioxide, carbon monoxide, methane, ammonia, nitrogen oxide increases the death of the sewage workers. The main aim of this project is to design a network system which helps in monitoring poisonous gases present in sewage. Whenever the gas level crosses the threshold value, the information with different gas ppm values is displayed in the smart phone through the app. It also indicates whether it is safe for the manual scavengers to work in the environment or not.

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