Experimental Study on Properties of Coal and Coke Dry Quenching Dust Blend

2014 ◽  
Vol 997 ◽  
pp. 550-553 ◽  
Author(s):  
Yan Hong Gao ◽  
Zhong Yu Liang ◽  
Guang Jun Zhu ◽  
Neng Yun Deng ◽  
Sheng Qin Zhang
Keyword(s):  
Experimental Study ◽  
Blast Furnace ◽  
Coal Dust ◽  
Research Work ◽  
Combustion Efficiency ◽  
Efficient Utilization ◽  
Combustion Performance ◽  
Coal Blend ◽  
Dry Quenching ◽  
Experimental Researches

In the present research work, adding a certain amount of coke dry quenching(CDQ) dust to pulverized coal used in blast furnace is proposed for efficient utilization of resources and reducing smelting cost. The properties of coal blends and coal/dust blends were investigated by using long tube tester and the device of thermogravimetry (TG). Important results were obtained by experimental researches about explosibility and combustion performance. According to optimum blending ratio of coal B in coal blend (around 50%), burnout of coal/dust blends decreases after adding CDQ dust in the range 5% to 10% to blends. However, all of them are more than 80%, which can meet production requirements. In the case of adding about 8% of CDQ dust to coal blend, combustion efficiency is better and safety injection can be realized.

Experimental Research on the Qualitative Characteristics of Iron Ores and Ferrous Waste That Can Be Used in Blast Furnace Mixt Injection Technology

2019 ◽  
Vol 70 (11) ◽  
pp. 3835-3842
Author(s):  
Mihai Dumitru Tudor ◽  
Mircea Hritac ◽  
Nicolae Constantin ◽  
Mihai Butu ◽  
Valeriu Rucai ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Experimental Research ◽  
Raw Materials ◽  
Coal Dust ◽  
Production Costs ◽  
Iron Ores ◽  
Fine Grained ◽  
Experimental Laboratory ◽  
Injection Technology ◽  
Direct Use

Direct use of iron ores in blast furnaces, without prior sintering leads to a reduction in production costs and energy consumption [1,2]. Fine-grained iron ores and iron oxides from ferrous wastes can be used together with coal dust and limestone in mixed injection technology through the furnace tuyeres. In this paper are presented the results of experimental laboratory investigations for establishing the physic-chemical characteristics of fine materials (iron ore, limestone, pulverized coal) susceptible to be used for mixed injection in blast furnace. [1,4]. The results of the experimental research have shown that all the raw materials analyzed can be used for mixt injection in blast furnace.

Blast-furnace use of coke dust formed in dry quenching

2014 ◽  
Vol 57 (12) ◽  
pp. 471-476 ◽  
Author(s):  
M. B. Shkoller ◽  
S. A. Kazimirov ◽  
M. V. Temlyantsev ◽  
A. E. Basegski
Keyword(s):  
Blast Furnace ◽  
Coke Dust ◽  
Dry Quenching

Experimental Study on Application of Boron Mud Secondary Resource to Oxidized Pellets Production

2017 ◽  
Vol 36 (7) ◽  
pp. 649-655
Author(s):  
Xiao-Jiao Fu ◽  
Man-Sheng Chu ◽  
Jia-Qi Zhao ◽  
Shuang-Yin Chen ◽  
Zheng-Gen Liu ◽  
...  
Keyword(s):  
Experimental Study ◽  
Blast Furnace ◽  
Furnace Operation ◽  
Blast Furnace Operation ◽  
Fundamental Study ◽  
Secondary Resource ◽  
Oxidized Pellets ◽  
Rich Material ◽  
Boron Mud ◽  
Better Than

AbstractIn order to realize comprehensive and massive treatment of boron mud secondary resource, fundamental study on boron mud applied to oxidized pellets production as additive was carried out in the paper under laboratory conditions. The effects of boron mud on the performance of oxidized pellets were investigated systemically, and boron mud was combined with other boron-rich material innovatively. The results showed that, within certain limits, boron mud can improve properties of oxidized pellets. The bentonite content decreased to 0.3 % when adding 1.0 % boron mud additive and the pellets met blast furnace requirements. With the combination additive content 0.8 %, bentonite content can be further decreased to 0.2 %, and the pellets properties were better than base pellet. Therefore, it was an effective way to reduce environmental pollution and optimize blast furnace operation by developing boron mud secondary resource as pellets additive.

A comparative numerical study of the combustion performance of the syngas-fueled HCCI engine using a toroidal piston, square bowl piston, and flat piston shape at different loads

2021 ◽  
pp. 1-27
Author(s):  
Kabbir Ali ◽  
Changup Kim ◽  
Yonggyu Lee ◽  
Seungmook Oh ◽  
Ki-Seong Kim
Keyword(s):  
Numerical Study ◽  
Pressure Rise ◽  
Fuel Mixture ◽  
Combustion Efficiency ◽  
Maximum Pressure ◽  
Cross Sectional ◽  
Combustion Performance ◽  
Hcci Engine ◽  
Heat Loss Rate ◽  
Piston Bowl

Abstract This study analyzes the combustion performance of a syngas-fueled homogenous charge compression ignition (HCCI) engine using a toroidal piston, square bowl, and flat piston shape, at low, medium, and high loads, with a constant compression ratio of 17.1. In this study, the square bowl shape is optimized by reducing the piston bowl depth and squish area ratio (squish area/cylinder cross-sectional area) from (34 to 20, 10, and 2.5) %, and compared with the flat piston shape and toroidal piston shape. This HCCI engine operates under an overly lean air–fuel mixture condition for power plant usage. ANSYS Forte CFD with GRI Mech3.0 chemical kinetics is used for combustion analysis, and the calculated results are validated by the experimental results. All simulations are accomplished at maximum brake torque (MBT) by altering the air–fuel mixture temperature at IVC with a constant equivalence ratio of 0.27. This study reveals that the main factors that affect the start of combustion , maximum pressure rise rate (MPRR), combustion efficiency, and thermal efficiency by changing the piston shape are the squish flow and reverse squish flow effects. Therefore, the square bowl piston D is the optimized piston shape that offers low MPRR and high combustion performance for the syngas-fueled HCCI engine, due to the weak squish flow and low heat loss rate through the combustion chamber wall, respectively, compared to the other piston shapes of square bowl piston A, B, and C, flat piston, and toroidal (baseline) piston shape.

Experimental study on the influence of surfactants in compound solution on the wetting-agglomeration properties of coal dust

2021 ◽  
Author(s):  
Bo Zhao ◽  
Shugang Li ◽  
Haifei Lin ◽  
Yueying Cheng ◽  
Xiangguo Kong ◽  
...  
Keyword(s):  
Experimental Study ◽  
Coal Dust

COMBUSTION OF A GAS SUSPENSION OF COAL DUST IN A SWIRLING FLOW

2021 ◽  
pp. 139-147
Author(s):  
K.M. Moiseeva ◽  
◽  
A.Yu. Krainov ◽  
E.I. Rozhkova ◽  
◽  
...  
Keyword(s):  
Flow Velocity ◽  
Swirling Flow ◽  
Coal Dust ◽  
Combustion Efficiency ◽  
Dust Particles ◽  
Gas Temperature ◽  
Flow Swirl ◽  
Angular Component ◽  
Air Suspension ◽  
The Impact

Swirling combustion is currently one of the most important engineering problems in physics of combustion. There is a hypothesis on the increase in the combustion efficiency of reacting gas mixtures in combustion chambers with swirling flows, as well as on the increase in the efficiency of fuel combustion devices. In this paper, it is proposed to simulate a swirling flow by taking into account the angular component of the flow velocity. The aim of the study is to determine the effect of the angular component of the flow velocity on the characteristics of the flow and combustion of an air suspension of coal dust in a pipe. The problem is solved in a twodimensional axisymmetric approximation with allowance for a swirling flow. A physical and mathematical model is based on the approaches of the mechanics of multiphase reacting media. A solution method involves the arbitrary discontinuity decay algorithm. The impact of the flow swirl and the size of coal dust particles on the gas temperature distribution along the pipe is determined.

scholarly journals Adaptation of Methanol–Dodecanol–Diesel Blend in Diesel Genset Engine

2019 ◽  
Vol 141 (10) ◽  
Author(s):  
Avinash Kumar Agarwal ◽  
Nikhil Sharma ◽  
Akhilendra Pratap Singh ◽  
Vikram Kumar ◽  
Dev Prakash Satsangi ◽  
...  
Keyword(s):  
Experimental Study ◽  
Fuel Additive ◽  
Particulate Emissions ◽  
Emission Characteristics ◽  
Nox Emissions ◽  
Compression Ignition ◽  
Performance And Emission ◽  
Combustion Performance ◽  
Compression Ignition Engines ◽  
Single Cylinder Engine

Miscibility of methanol in mineral diesel and stability of methanol–diesel blends are the main obstacles faced in the utilization of methanol in compression ignition engines. In this experimental study, combustion, performance, emissions, and particulate characteristics of a single-cylinder engine fueled with MD10 (10% v/v methanol blended with 90% v/v mineral diesel) and MD15 (15% v/v methanol blended with 85% v/v mineral diesel) are compared with baseline mineral diesel using a fuel additive (1-dodecanol). The results indicated that methanol blending with mineral diesel resulted in superior combustion, performance, and emission characteristics compared with baseline mineral diesel. MD15 emitted lesser number of particulates and NOx emissions compared with MD10 and mineral diesel. This investigation demonstrated that methanol–diesel blends stabilized using suitable additives can resolve several issues of diesel engines, improve their thermal efficiency, and reduce NOx and particulate emissions simultaneously.

scholarly journals I. On certain dimensional properties of matter in the gaseous state. Part I. Experimental researches on thermal transpiration of gases through porous plates, and on the laws of transpiration and impulsion, including an experimental proof that gas is not a continuous plenum. Part II. On an extension of the dynamical theory of gas which includes the stresses, tangential and normal, caused by a varying condition of the gas, and affords an explanation of the phenomena of transpiration and impulsion

1879 ◽  
Vol 28 (190-195) ◽  
pp. 303-321 ◽  
Keyword(s):  
Experimental Study ◽  
Dynamical Theory ◽  
Molecular Theory ◽  
Thin Plates ◽  
Capillary Tubes ◽  
Experimental Proof ◽  
Gaseous State ◽  
Dimensional Properties ◽  
The Subject ◽  
Experimental Researches

1. The motion of gases through minute channels such as capillary tubes, porous plugs, and apertures in thin plates has been the subject of much attention during the last fifty years. The experimental study of these motions, principally by Graham, resulted in the discovery of important properties of gases, and it is largely, if not mainly, as affording an explanation of these properties, that the molecular theory has obtained such general credence.

scholarly journals Experimental Study on Inhibiting the Gas and Coal Dust Explosion by Water Mist in Tube with Obstacle

2011 ◽  
Vol 26 ◽  
pp. 1851-1856 ◽  
Author(s):  
Li Zhen-feng ◽  
Cao Shao-long ◽  
An An ◽  
Hu Peng
Keyword(s):  
Experimental Study ◽  
Coal Dust ◽  
Water Mist ◽  
Dust Explosion
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