coal dust injection process

Thermal reactivity and flowability of pulverized coal blending with ...

Pulverized coal (PC) blending with ironbearing dust (IBD) injection technology in blast furnace (BF) ironmaking process was proposed to valorize the IBD.

Experimental research of the surfactant effect on seepage law in coal ...

Coal seam water injection is one of the important means of mine disaster prevention, which helps to restrain the production of dust and reduce gas concentration. Ionic surfactant can change the capillary force of water in coal pore fissures, so as to enhance the wetting effect of coal seam water injection. However, the research on the effect of surfactant on the seepage process is still ...

Pulverized coal injection (PCI) | Iron Steel | Kuettner Group

Process Automation Simulation Pulverized coal injection (PCI) Pulverized Coal Injection (PCI) using the denseflow method The Küttner developed and perfected denseflow method offers several advantages over a lowerdensity system.

Potential direct use of solid biomass in internal combustion engines

The use of biomass dust as a fuel in reciprocating engines could be of great interest because it could combine the versatility of the ICE with the large availability and the CO 2neutral impact of biomass, with respect to coal, (see Table 1) biomass fuels generally have a lower ash and sulphur content (and ash can be easily removed by water leaching), and have a large volatile ...

Synthesis and properties of wettabilityincreasing ... ScienceDirect

1. Introduction. In the process of coal mining, coalseam water injection can play the role of wetting the coal seam, which is conducive to minimizing the amount of coal dust produced in the mining process (Zhang et al., 2018, Wang et al., 2019a, Wang et al., 2019a, Zhou et al., 2017a).However, most coal mines—particularly deep mines— have the problems of low porosity, poor wettability, etc.

$Insights into the fluid wetting law and fractal characteristics of coal ...$

Insights into the fluid wetting law and fractal characteristics of coal ...

In the process of coal mining, a large amount of methane is emitted into the atmosphere every year, which enhances the greenhouse effect of the atmosphere. ... This paper lays a theoretical and experimental foundation for the development of a new technology for coal seam water injection dust prevention. View all citing articles on Scopus. View ...

Study on water seepage law of confined coal body and optimization of ...

Introduction. Coal seam water injection can prewet the coal body, increase the water content [1], [2], reduce dust generation [3], [4], change the physical and chemical properties of coal [5], [6], and promote gas desorption mining [7], [8] to control coal mine disasters such as coal and gas outbursts, rock bursts, and coal dust.

Imbibition behavior of water on coal surface and the impact of ...

Coal seam water injection is vital in mitigating dust pollution in coal mining operations. To investigate water imbibition and adsorption behavior on the coal surface following injection into coal seams, as well as the impact of surfactants, coal particles with sizes of 68 mm, 35 mm, and mm were selected from the Dongtan Coal Mine in Shandong Province, China.

Experimental study and analysis on physicochemical properties of coal ...

Therefore, in the process of coal mining, it is necessary to pretreat the coal to reduce the generation and diffusion of coal dust. Theoretically, coal seam water injection is an important means to fundamentally reduce coal dust generation, and coal seam water injection fracturing technology has good fracturing and wetting effects on high ...

Numerical Simulation and Engineering Application of Coalbed Water Injection

Coalbed water injection is the most basic and effective dustproof technology in the coal mining face. To understand the influence of coalbed water injection process parameters and coalbed characteristic parameters on coal wetting radius, this paper uses Fluent computational fluid dynamics software to systematically study the seepage process of coalbed water injection under different process ...

Preparation and characterization of a wetting ... ScienceDirect

Preparation process. ... The dispersion of coal dust on roadways adversely affects the productivity of coal mines and threatens the lives of mine workers. ... which was important for improving the effect of coal seam water injection and reducing the dust concentration. Investigation on the effect of functional groups on the wettability of coal ...

Research on the wetting mechanism of coal dust by different ... Springer

Coal accounts for approximately 60% of China's primary energy and is an important part of the energy structure (Li et al. 2015; Zhou et al. 2020b).The clean energy produced by the coal chemical process has less environmental pollution than direct combustion (Chen et al. 2020; Guo et al. 2020).Therefore, there will still be a large demand for coal in the future.

Coupling Mechanism of Coal Body StressSeepage around a Water Injection ...

In China, coal seam water injection technology is widely used in the prevention and control of mine gas and dust disasters. The evolution law of stressseepage field in the range of hydraulic influence in the process of coal seam water injection is the most basic theoretical problem in coal seam water injection technology. Therefore, this paper first uses the radial seepage experimental ...

Study on seepage and wettability distribution of coal seam water ...

The process of water injection in coal seams describes the permeation behavior caused by the action of ground stress and water injection pressure. To study how ground stress and water injection pressure affect water expansion in the coal seam, based on the correlation between the electrical conductivity of coal and its water content, this study designs a coal humidity detection system that ...

Fire extinguishing and explosion suppression characteristics of ...

Coal dust injection ON: : Coal dust injection OFF: : Ignition system ON: Explosion suppression system ON: ... the mass loss is %, mainly due to polyphosphate's dehydration process. The low pyrolysis of coal dust in the N 2 atmosphere and the endothermic effect of APP, and thus the thermal decomposition of coal dust was suppressed ...

Synthesis and Properties of a ConglomerationWetting Spray Agent for ...

Recent research on liquid spray additives for coal dust suppression has been focused on enhancing the wetting ability while neglecting the mitigation of dust reentrainment issue. ... Experimental synthesis and performance comparison analysis of highefficiency wetting enhancers for coal seam water injection. Process Safety and Environmental ...

Combustion Characteristics of Coal for Pulverized Coal Injection (PCI ...

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Numerical Simulation of Pulverized Coal Injection in the ... Springer

Pulverized coal injection (PCI) in the dome zone of the COREX MG is used to transform the oxygen burners (OBs) into oxygencoal burners (OCBs) and cooperates with the dust burners (DBs) to realize the function of gasification.

Study on the effect of SDBS and SDS on deep coal seam water injection

Coal seam water injection, as an important disaster prevention means in the process of coal mining, can effectively suppress coal dust, add water injection additives, can effectively improve the wettability of coal body, improve the permeability of coal body, so as to achieve the prevention of rock .

Improving the rotary kilnelectric furnace process for ferronickel ...

Other dust recovery techniques applied in pyrometallurgical processes are pelletizing and submerged injection [8], [9]. This work uses data analytics techniques to gain insight into the operation before and after dust insufflation in the rotary kiln furnace of a 180 t h −1 RKEF ferronickel production process.

Thermal reactivity and flowability of pulverized coal ... ResearchGate

Pulverized coal (PC) blending with ironbearing dust (IBD) injection technology in blast furnace (BF) ironmaking process was proposed to valorize the IBD.

Improvement of wettability of coal seams in water injection via co ...

To further enhance the impact of water injection and dust reduction in the deep mining process of the coal mine, an efficient dust suppressant for water injection was synthesized by coupling a chelating agent and a surfactant. The optimal composition solution was determined by surface tension, pretreatment settling time and contact angle. ...

Effects of cationic and anionic surfactants on long flame coal seam ...

Coal seam water injection is one of the important technical means to prevent mine disasters. It can effectively change the mechanical properties of coal, prevent dust, coal and gas outburst, and reduce gas concentration. In order to expand the range of coal seam water injection, make coal seam water injection more effective in wetting coal mass, and determine the effective type of ionic ...

PDF Material Balance in A Blast Furnace, When Replacing Coke With Coal Dust

replace the amount of coke with coal dust in the range of coke / CDI. KEYWORDS: blast furnace, coke, injection of coal dust (CDI), material balance 1. Introduction In advanced ironmongery, the development of this process has grown since 1983, so over 100 plants currently consume 20 million tons of energy per year,

Combustion performance of pulverized coal and ... ResearchGate

Pulverized coal (PC) blending with ironbearing dust (IBD) injection technology in blast furnace (BF) ironmaking process was proposed to valorize the IBD.

Enhancement of the wettability of a coal seam during water injection ...

Coal seam water injection, as an important disaster prevention means in the process of coal mining, can effectively suppress coal dust, add water injection additives, can effectively improve the ...

Simulation of Pulverized Coal Combustion Process Considering Turbulence ...

The coal consumption in our country mainly lies in coalfired power stations and industrial boilers. Since the temperature change in the furnace influences combustion, slagging In the pulverized coal combustion process, turbulence impacts the radiation transmission of the medium by changing the shape of the flame, and the heat release acts on the turbulence field by changing the ...

Numerical Simulation and Engineering Application of Coalbed Water Injection

The effect of dust reduction applied to onsite coalbed water injection is significant, with the average dust reduction rates during coal cutting and support moving being % and % ...

Influence of preignition pressure rise on safety characteristics of ...

The PIPR in the 1 m 3 chamber with one pressurized dust container was with 115 mbar lower than the PIPRs in the 20Lsphere (see Fig. 3).In cases with higher dust amounts two dust containers can be used so theoretically the PIPR may be around 200 mbar. For the reported values of p max this means, the explosion pressures may be 10 % to 20 % higher than if they were measured under ambient pressure.