(PDF) Removal of sulphur from Assam coal by …
A new process for the removal of pyritic sulfur from coal slurries using bacterial conditioning prior to froth flotation has been developed and tested on two high sulfur coals.
Sulfur management of coal processing complexes
The Energy & Environmental Research Center (EERC) conducted a laboratory-scale coal-derived graphene (CDG) project focused on developing a technological process for making graphene from four U.S. domestic coal or coal wastes, including lignite from North Dakota, subbituminous coal from Wyoming, bituminous coal from Utah, and anthracite from …
Chemical removal of pyritic sulfur from coal
@article{osti_7269973, title = {Chemical removal of pyritic sulfur from coal}, author = {Hamersma, J W and Kraft, M L and Koutsoukos, E P and Meyers, R A}, abstractNote = {A new approach for the chemical removal of pyritic sulfur from coal is described. The process is based on the discovery that aqueous ferric salt selectively oxidizes the pyritic …
Removal of sulfur and ash from Indonesian coal by …
The application of microbial resources for removal of sulfur from coal is an ecofriendly technique and could be successfully employed at industrial scale after laboratory scale process ...
What is the best industrial method to eliminate Sulphur from Coal
Sulphur in coal is found in both inorganic and organic forms and sulphates. Inorganic sulphur, in the form of pyrite (FeS2), can be removed from coal relatively easily simply by washing the coal.
Feasibility study of reduction removal of thiophene sulfur in coal
1. Introduction. In China, high quality coal reserves are gradually depleting and about one third of total coal reserves are middle low sulfur coal or middle sulfur coal [1], [2], [3], [4].Nearly 90% of China's sulfur dioxide emissions come from coal combustion, which was one of the major causes of the haze in China [5], [6].Coal desulfurization is …
The DTG (a) and TG (b) curves of coal samples. DTG, …
Xu et al. (2022) used Nocardia mangyaensis and Pseudomonas putida to remove organic sulfur from coal, and the organic sulfur removal of these two bacterial strains on high …
Microwave-assisted removal of sulfur in large particle size coal …
The results show that bromine water can effectively remove organic sulfur in coal. After 5 repeated reactions, the desulfurization rate of coal samples can reach 90%. ... Exploration of the combined action mechanism of desulfurization and ash removal in the process of coal desulfurization by microwave with peroxyacetic acid. Energy Fuels, 31 ...
An effective method to remove organic sulfur in coal: …
The present work investigated an effective method to remove organic sulfur in coal utilizing different microorganisms (Nocardia mangyaensis and Pseudomonas putida).The most obvious finding to emerge from the sulfur forms analysis is that the organic sulfur removal of these two bacterial strains on Yunnan bumuga high-sulfur …
Calcium oxide (CaO) is used to remove sulfur dioxide generated by coal
Calcium oxide (CaO) is used to remove sulfur dioxide generated by coal-burning power stations: 2 CaO(s)+2 SO2(g)+O2(g) 2 CaSO4(s) Calculate the enthalpy change for this process if 6.6 × 10^5g of SO2 are removed by this process every day. ... {CaSO}_{4}(s)$$ Calculate the enthalpy change for this process if $6.6 times 10^{5} mat{g}$ of ...
A novel method for removing organic sulfur from high-sulfur coal …
A novel technology of removing organic sulfur from coal was proposed by microwave irradiation combined with NaOH-H 2 O 2.The organic sulfur removal degree and the transformation of sulfur-containing compounds in coal was also analyzed using Inductively coupled plasma (ICP) and Fourier transform infrared (FTIR) during …
Sulfur removal technologies from fuel oil for safe and …
The process decreased the sulfur removal with time. However, the Ni 3 S 2 formed at this stage was transformed into Ni and H 2 S by continuous reaction with H 2, and the generated H 2 S reacted with MoO 2 to form MoS 2. Further, the formed MoS 2 catalyzed the hydrogenolysis of the C S bond, leading to increased sulfur removal in …
(PDF) An Overview of the Development of Chemical
Several studies [25-27] have attempted to target acidic coal leaching for c oal desulfurization. The coal was treated with a 15% hydrogen peroxide (H 2O2) solution at …
A novel method for removing organic sulfur from high-sulfur …
A novel technology of removing organic sulfur from coal was proposed by microwave irradiation combined with NaOH-H 2 O 2. The organic sulfur removal …
Selective sulfur removal from semi-dry flue gas …
1 1 Selective sulfur removal from semi-dry flue gas desulfurization 2 coal fly ash for concrete and carbon dioxide capture applications 3 Raghavendra Ragipania, Eleanor bara, Dale Prenticeb,c, Steven 4 Bustillosb,d, Dante Simonettic,d,e, Gaurav Santb,c,e,f, Bu Wanga* 5 a Department of Civil and Environmental Engineering, …
How to Remove Sulphur from Coal
The tests indicated that gravity separation, under optimum conditions, could be expected to yield coal products containing 10 to 12 percent ash, and 0.20 to 0.30 percent pyritic sulfur. Good recoveries of …
Removal of sulfur and ash from coal using molten …
removal in both of coal samples. Pyritic sulfur removal was achieved at higher percentage than organic sulfur, but it could be said that the degree of degradation depends on the nature and composition of coal because of the closeness of sulfur removal percentage of pyritic and organic sulfur in Hazro coal sample. The removal of ash was around ...
Organic sulfur removal from coal by electrolysis in alkaline …
4. The removal of sulfur in coal in the form of pyrite and sulfate is greatest at applied potentials below 1.6 V versus SCE. The maximum reduction for both species occurs at approximately 1.3 V versus SCE. 5. The removal of organic sulfur in coal is greatest at applied potentials above 1.6 V versus SCE.
To improve air quality, chemists often remove sulfur from coal …
To improve air quality, chemists often remove sulfur from coal and natural gas by treating the fuel contaminant hydrogen sulfide with {eq}O_2 {/eq} in the following exothermic process. ... One common removal method is called the Claus process, which relies on the reaction: 8 H 2 S ( g ) + 4 O 2 ( g ) S 8 ( l ) + 8 H 2 O ( g ) . Under optimal ...
Effect of removal organic sulfur from coal macromolecular …
Two kinds of high organic sulfur coal samples were collected from Xinyu (XY) and Guxian (GX) coal mines, in Shanxi province, China. Representative samples were dried in a vacuum drying oven and then ground and sieved to the size of <0.074 mm. Proximate and ultimate analyses were conducted based on ASTM Standards D3173-11, …
Dry Coal Processing & Coal Washing Process
Use our innovative dry coal preparation process & save money and resources. Visit our site or call (859) 263-8300 now for your free performance estimate. ... Preparation of low-rank coal; Removal of pyretic sulfur and other heavy metals such as mercury; Pre-deshaling for steam/metallurgical coal preparation; Coal cleaning in arid and cold area;
The use of ethanol to remove sulfur from coal. Final report, …
@article{osti_10141011, title = {The use of ethanol to remove sulfur from coal. Final report, September 1991--December 1992}, author = {}, abstractNote = {In developing the new Ohio University procedure the thermodynamic limitations of the reactions for removal of both pyritic and organic sulfur from coal at 400- …
Developments for the precombustion removal of inorganic sulfur from coal
FUEL PROCESSING TECHNOLOGY ELSEVIER Fuel Processing Technology 43 (1995) 123-128 Developments for the precombustion removal of inorganic sulfur from coal Travis Thoms* 3936 Folsom Dr., Antioch, CA 94509, USA Received 20 June 1994; accepted in revised form 6 December 1994 Abstract As …
SULFUR REMOVAL FROM COAL BENEFICIATION WASTES
Sulfur removal of the coal wastes will enable the elimination of the pyritic content and. ... The process of coal desulfurization by processing with air-steam mixture at 623–673 K was ...
Removal of sulfur and ash from coal using molten …
and so on. Moreover, high-sulfur coal usually contains high content of hazardous trace elements (Dai et al., 2007). Ash lowers the combustion efficiency of boilers and causes other deleterious effect. Ash handling and disposal of ash are also problems. Therefore, …
Calcium oxide $(mat{CaO})$ is used to remove sulfur …
Find step-by-step Chemistry solutions and your answer to the following textbook question: Calcium oxide $(mat{CaO})$ is used to remove sulfur dioxide generated by coal-burning power stations: $$ 2 mat{CaO}(s)+2 mat{SO}_2(g)+mat{O}_2(g) longrightarrow 2 mat{CaSO}_4(s) $$ Calculate the enthalpy change for this …
Removal of Organic Sulfur from Coal by Wheat Straw …
Removal of organic sulfur content increased continuously with increasing temperature from 298 to 368 K for potassium ferric hexacyanoferrate (II), and from 350 t0 600 K for wheat …
Non-thermal effect of microwave on organic sulfur removal from coal …
A high organic sulfur coal sample was collected from the Xinyu coal mine in Shanxi province, China. Representative samples were dried in a vacuum drying oven and then ground and sieved to the size of <0.074 mm. Proximate, ultimate and sulfur speciation analyses were conducted, as shown in Table 1.It shows that the sulfate and pyritic …
Aspen Plus Simulation of CO2 Removal from Coal and Gas Fired Power
This paper presents a description of the CO2 removal process of 500MW coal and gas fired power plants. The parameters and other operating conditions for Aspen Plus rate based model were selected to achieve 85% of CO2 removal. The effects of absorber pressure and packing height on re-boiler duty are studied. Re-boiler duty is …
Process for removal of sulfur and ash from coal
A process for reducing the sulfur and ash content of coal wherein coal particles are treated in an aqueous slurry with a minor amount of hydrocarbon oil to form coal-oil aggregates. The coal-oil aggregates are separated from ash and mineral matter in the slurry by dissolved gas flotation. Optionally, the coal particles may be treated with a …