effect of mixing coal powder to water oil

Effect of microemulsion on lowrank coal flotation by mixing DTAB and ...

Effect of microemulsion on lowrank coal flotation by mixing DTAB and ...

In this study, a microemulsion was prepared by mixing dodecyl trimethylammonium bromide (DTAB) and diesel oil; its effect on lowrank coal flotation was studied via water contact angle and wrap angle measurements. The results show that the clean coal could not be effectively recovered using a single reagent of DTAB or diesel oil.

PDF Coal Water Slurry As a Substitute for Fuel Oil in India

PDF Coal Water Slurry As a Substitute for Fuel Oil in India

Coal water slurry (CWS) is a fuel which consists of fine coal particle suspended in water. Presence of water in CWS reduces harmful emissions and makes the coal explosion proof thus makes it useful as a liquid fuel. The concept of coal water slurry dates back to Smith and Munsell (1879) [1] when patented for coal oil

An experimental study of stability of oilwater emulsion

An experimental study of stability of oilwater emulsion

The preparation of stable waterinoil (W/O) emulsion is critical for the success of production of stable coaloilwater slurry. The present study was undertaken to experimentally investigate the effects of different process variables on emulsion stability. The emulsion was prepared using 100 ml colloid mill with sorbitan monooleate (SM) as ...

Ecofriendly utilization of waste oil for preparing coal water slurry ...

Ecofriendly utilization of waste oil for preparing coal water slurry ...

Fu et al. [16] and Zhu et al. [17] studied the effects of light oil, fine coal powder, and water content as well as the properties of surfactants on the rheology and stability of synthetic fuels. Guo et al. [18] studied the rheological properties of a new type of synthetic fuel composed of residual oil, coal powder, and water.

Experimental study on the influence of coal powders on the performance ...

Experimental study on the influence of coal powders on the performance ...

To accurately verify the effect of coal cuttings on waterbased polymer drilling fluids, we add coal powders to the drilling fluid, and measure their performance after mixing the coal powders. Because the large particles below 60 mesh of coal cuttings mixed in the drilling fluid are removed by the solid control device in field drilling ...

The impact of coal gasification slag powder on fluidity, rheology and ...

The impact of coal gasification slag powder on fluidity, rheology and ...

1. Introduction. Coal is the world's largest fossil strategic energy reserve, and mining and utilization technologies are constantly innovating. Driven by carbon neutral and carbon emission reduction policies, the clean utilization technology of coal has also achieved continuous breakthroughs [1, 2].Coal gasification is the core process for coal to produce syngas products, and coal ...

Impact of Hydrodynamic Cavitation on the Properties of CoalWater Fuel ...

Impact of Hydrodynamic Cavitation on the Properties of CoalWater Fuel ...

Simple manual mixing of hydrophobic coal and water is obviously insufficient to produce a stable suspension. ... 75 g of coal powder and 75 mL of water were at the same time placed in the beaker of a hydrodynamic rotarytype mixer Waring blender 80100 with a twoblade impeller of wedge profile, and the wedge angle of the cavitator was α = 60 ...

Understanding How Oil Reacts on Water: A Simple Experiment

Understanding How Oil Reacts on Water: A Simple Experiment

If you'd like, you can mix a little cocoa powder into the vegetable oil to make it show up better and look more like crude oil. Fill the bowl with water to an inch or two below the rim. Place it on a table, and have everyone crowd around it. Pour a little oil on the water. Now, watch what happens. The oil, even a little drop, will spread out ...

PDF Coke Production  Environmental Protection Agency

PDF Coke Production Environmental Protection Agency

The coal is transferred from the mixing bins to the coal crusher where it is pulverized to a preselected size between and mm ( and in.). ... The pulverized coal is then mixed and blended, and sometimes water and oil are added to control the bulk density of the mixture. The prepared coal mixture is transported to the coal ...

Dispersion mechanism of coal water slurry prepared by mixing various ...

Dispersion mechanism of coal water slurry prepared by mixing various ...

Coal powder was placed in a xanthan gum solution having concentration identical to that of the WCWS. The adsorbed suspension was subjected to highspeed centrifugation to separate the wet coal powder. The coal powder was dried in an oven at 60 °C, and pressurized and polished into a tablet with a thickness of mm and diameter of 2 cm.

Interactions of amphiphilic humic acidbased polymers with coal and ...

Interactions of amphiphilic humic acidbased polymers with coal and ...

The main purpose in this study was to understand the interactions of coal particles with three amphiphilic humic acidbased polymers, which were designed and synthesized through the copolymerization of humic acid (HA) with maleic anhydridepolyethylene glycol 400 monoester, methacrylatoethyl trimethyl ammonium chloride or both of them, respectively, abbreviated as HAM, HAD and HMD.

FW6113 IOPscience

FW6113 IOPscience

Abstract. The preparation of coal water slurry (CWS) as a new substitute for oil and the factors affecting the stability of CWS were studied in this paper. Dry method was used to prepare CWS. Dry coal water slurry refers to the preparation of CWS by grinding coal into powder, then adding water and additives, mixing and stirring.

Combined effect of chemical composition and spreading velocity of ...

Combined effect of chemical composition and spreading velocity of ...

In this study, the combined effect of chemical composition and spreading velocity of collector on flotation performance of oxidized coal was investigated. Oxidized coal samples were prepared using the H 2 O 2 solution oxidation method. The contents of oxygencontaining groups on the coal surface increased with the oxidation degree by Xray photoelectron spectroscopy (XPS) analysis and the coal ...

Dispersion mechanism of coal water slurry prepared by mixing various ...

Dispersion mechanism of coal water slurry prepared by mixing various ...

Moreover, Yi et al. [6] used bio oil from biomass pyrolysis to prepare coal water slurry to confirm that the coal water slurry changed from weak to strong pseudoplastic fluid with the increase in the water content of bio oil. Zhang et al. [7] prepared coal water slurry by using waste engine oil and proposed that the possible stabilization ...

Effect of microemulsion on lowrank coal flotation by mixing DTAB and ...

Effect of microemulsion on lowrank coal flotation by mixing DTAB and ...

In this study, a microemulsion was prepared by mixing dodecyl trimethylammonium bromide (DTAB) and diesel oil; its effect on lowrank coal flotation was studied via water contact angle and wrap ...

How Federal Giveaways to Big Coal Leave Ranchers and Taxpayers Out in ...

How Federal Giveaways to Big Coal Leave Ranchers and Taxpayers Out in ...

Over the years, the federal government has sold leases in the Powder River Basin for about per ton of coal or less. The market price of Powder River Basin coal is about a ton ...

An integrated drilling, protection and sealing ... ScienceDirect

An integrated drilling, protection and sealing ... ScienceDirect

When water is adopted as the coal slag discharge medium in the process of drilling in soft coal seams, coal slurry with great agglomerated and viscous is formed after the water invades the coal powders. As the dry coal powders gradually mix with the wet coal slurry, the strength and consistency of the coal slurry will continue to be promoted.

Cocombustion characteristics and kinetics of meager coal and spent ...

Cocombustion characteristics and kinetics of meager coal and spent ...

Herein, a method of mixed combustion of meager coal and SCCB in a pulverized coal furnace for disposal of SCCB is proposed, and thermogravimetric mass spectrometry (TGMS) is used to characterize the combustion and gas release characteristics. The effects of the heating rate and mixing ratio on combustion are analyzed as well.

Substitution of the natural aggregate filler by coal waste powder (CWP ...

Substitution of the natural aggregate filler by coal waste powder (CWP ...

A study by Xu et al. (2019) examined the effects of coal waste as filler on the functional characteristics of asphalt mastics and mixtures. The study investigated the effects of coal waste on asphalt mastics and mixtures considering various fractions of mass (20 %, 40 %, 60 %, 80 %) for fine limestone powder replacement as a filler.

Synergistic effects of mixing waste activated carbon and coal in co ...

Synergistic effects of mixing waste activated carbon and coal in co ...

DOI: / Corpus ID: ; Synergistic effects of mixing waste activated carbon and coal in coslurrying and CO2 cogasification article{Wang2021SynergisticEO, title={Synergistic effects of mixing waste activated carbon and coal in coslurrying and CO2 cogasification}, author={Jianbin Wang and Jian Chen and Jianzhong Liu and He Liu and Mingxia Wang and Jun Cheng ...

Study on the modification effect and mechanism of tailings powder on ...

Study on the modification effect and mechanism of tailings powder on ...

The specimens were manufactured and maintained according to the GB/T 50, standard. HJW60 mixer was used to mix cement, coal gangue powder, tailings powder, and coal gangue manufactured sand for 2 min, and then water was added to stir for 2 min. After mixing evenly, the material was discharged.

Physical and chemical interactions in coal flotation

Physical and chemical interactions in coal flotation

Coal flotation is a complex process involving several phases (particles, oil droplets and air bubbles). These phases simultaneously interact with each other and with other species such as the molecules of a promoting reagent and dissolved ions in water. The physical and chemical interactions determine the outcome of the flotation process.

Effects of Coking Wastewater on Preparation of Coal Pitch Water Slurry ...

Effects of Coking Wastewater on Preparation of Coal Pitch Water Slurry ...

The coal pitch water slurry was prepared by coal pitch powder, dispersants and two different kinds of coking wastewater. The apparent viscosity, rheological behavior and stability of the coal pitch water slurry were investigated. The results indicated that both the two kinds of coking wastewater could be used to prepare coal pitch water slurry. Moreover, the adsorption of dispersants and zeta ...

Powdered Coal an overview | ScienceDirect Topics

Powdered Coal an overview | ScienceDirect Topics

Consequently combustion equipment has to be derated. An attempt to overcome this has involved emulsifying water with coaloil mixtures (40 wt % coal, 40 wt % oil, 10 wt % water) with the intention of causing disruptive combustion. ... A 50:50 blend (or 1:1 blend) includes 50% of the volume of the powder as fly ash and 50% of the volume of ...

Gasification of coal water mixture in an entrainedflow gasifier ...

Gasification of coal water mixture in an entrainedflow gasifier ...

The effects of process parameters such as reformer temperature (700850 °C), steam/coal ratio (S/C) () and air equivalence ratio (ER) () on the composition of product gas, lower heating value (LHV), tar content, yield of product gas, the carbon and water conversions and the cold gas efficiency were investigated.

Mixing (process engineering) Wikipedia

Mixing (process engineering) Wikipedia

In industrial process engineering, mixing is a unit operation that involves manipulation of a heterogeneous physical system with the intent to make it more examples include pumping of the water in a swimming pool to homogenize the water temperature, and the stirring of pancake batter to eliminate lumps (deagglomeration).. Mixing is performed to allow heat and/or mass ...

A novel route to utilize waste engine oil by blending it with water and ...

A novel route to utilize waste engine oil by blending it with water and ...

Abstract. Coaloilwater slurry (COWS) synfuel can be prepared successfully by waste engine oil (WEO), water and coal in the existence of Tween 80 and SL. The effects of coal type, coal particle size distribution, and WEO blending proportion (α) on the slurryability of COWS were investigated, and certain essential properties, such as ...

Effect of Fe2+ on low rank coal flotation using oleic acid as collector ...

Effect of Fe2+ on low rank coal flotation using oleic acid as collector ...

Mixing 50 mg coal sample and 40 mL deionized water to prepare suspension. The suspension was agitated for 9 min using a magnetic stirrer and the reagents were added following the flotation tests conditions during the process. ... (40 °C). The powder was pressed into coal pieces to measure the water contact angle using the DSA100 contact angle ...

Slurryability and flowability of coal water slurry: Effect of particle ...

Slurryability and flowability of coal water slurry: Effect of particle ...

Of the different additives, the viscosity reduction effect of Tween 80 in the waste oilcoalwater slurry was best. Further, the comprehensive performance of the waste oilcoalwater slurry, including slurry ability, stability and fluidity, was found to be best at a water content of 10% and a Tween 80 content of 5%.

Coal Water Slurry As a Substitute for Fuel Oil in India

Coal Water Slurry As a Substitute for Fuel Oil in India

INTRODUCTION. Coal water slurry (CWS) is a fuel which consists of fine coal particle suspended in water. Presence of water in CWS reduces harmful emissions and makes the coal explosion proof thus makes it useful as a liquid fuel. The concept of coal water slurry dates back to Smith and Munsell (1879) [1] when patented for coal oil utilization ...

Effect of mixed collector addition sequence on the ... ScienceDirect

Effect of mixed collector addition sequence on the ... ScienceDirect

1. Introduction. In China, lowrank coal (LRC) is an important part of thermal coal and coal for the coal chemical industry. With the improvement of coal mining and coal preparation mechanization, LRC is prone to produce a large amount of slime in coal mining and processing due to its porous and fragile characteristics [[1], [2], [3]].These finegrained coal slimes have low calorific value and ...