Semantic Scholar extracted view of "A proposed coaltomethanol process with CO2 capture combined Organic Rankine Cycle (ORC) for waste heat recovery" by Liu Xia et al. ... (NGCC) of a novel process for H2 production using a chemical CaCu loop was proposed. This process is based on the sorptionenhanced reforming process . Expand. 43.
This has significantly increased the production of coalbased DRI. Out of the global DRI production of million tonnes in 2008, the production of coalbased DRI occupies million tonnes, which ... making DRI from ironore and coal. The process, however, has a drawback: the DRI produced may have a decreased iron content and/or increased ...
ABSTRACT. Coal Production and Processing Technology provides uniquely comprehensive coverage of the latest coal technologies used in everything from mining to greenhouse gas mitigation. Featuring contributions from experts in industry and academia, this book:Discusses coal geology, characterization, beneficiation, combustion, coking ...
sions than other coalfired power generation technologies (Ilyushechkin et al., 2012). Furthermore, the discharge of solid byproducts and waste waters is reduced roughly by 50% versus other coalfed plants, and the byproducts generated (mainly slag and sulfur) are environmentally benign and can be sold (RatafiaBrown et al., 2002a).
In this paper, a novel highefficiency coal gasification technology is proposed in which a regenerative unit is applied to recover syngas sensible heat to generate steam; then, the hightemperature steam is used to gasify coke from a pyrolyzer. Through such a thermochemical regenerative unit, the sensible heat with a lower energy level is upgraded into syngas chemical energy with a higher ...
China has the largest coal production in the world due to abundant resource requirements for economic development. In recent years, the proportion of opencast coal mine production has increased significantly in China. Opencast coal mining can lead to a large number of environmental problems, including air pollution, water pollution, and solid waste occupation. The previous studies on the ...
The present study investigated the biochar potential of crop residues from rice, wheat, maize and sugarcane cultivation, accounting for 89% of total agro production, for coal replacement in TPPs using primary secondary data and ArcGIS for mapping agroresidue collection point and TPP.
The mechanism of plasma pyrolysis of coal (Fig. 1) includes the evaporation of the moisture, devolatilization of the volatile components and char reaction [23].The primary pyrolysis products can be classified as light gas, tar and char in the coal chemical percolation devolatilization (CPD) model [24], [25], [26].The primary volatiles will undergo secondary reactions, producing secondary ...
In this study, an experimental investigation was presented on the oxidation behaviors of bituminous coal for different inert gases (N 2 and CO 2) at different concentrations (oxygen concentration indexes 21%, %, %, and %) using a temperatureprogrammed experimental purpose of this research was to examine the oxidation patterns of bituminous coal under different inert ...
With the increase of BR in the fuel blend, the H increases from % for the gasification of pure coal to % for the pure biomass and the CO and CH increase from to % and to %, respectively with the increase of BR. The CO decreases from to % with the increment of BR.
In Poland hard coal and lignite still constitute the main source of electricity production (Jureczka et al. 2019); for example, in 2020, as much as % of electricity was generated from coal (PSE 2020; Żuk et al. 2021).In the light of the Green Deal approved by the European Commission on December 11th, 2019 (European Commission 2019), it is necessary to remove coal from the energy market ...
Due to the past two decades' study, great progresses have been made in ECBM technology, especially in evaluations of CO 2 storage capacity in coal seams, laboratory studies related to CO 2ECBM mechanisms, modelings of CO 2ECBM process and also we have conducted some pilot/demonstration tests.. Evaluations of CO 2 storage capacity in coal seams. Much research has been done to develop ...
Thermal plasmaassisted processing is an effective process for the synthesis of gas (CO and H2) and carbonaceous materials production from industrial waste. In this paper, a DC plasma torch designed with two vortices chambers has been developed, and its characteristics have been experimentally tested. The plasma torch operates with different plasma working gases, including steam. The results ...
Pyrolysis is the first step of coal conversion processes such as gasification, liquefaction, and combustion.
Construction of intelligent coal mine knowledge map. Through the establishment of information entities, the mapping from the physical space to the digital space is realized. This mapping includes not only physical entities (, coal mining machines, hydraulic supports, and tunneling machines), but also time entities (, roof pressure, gas overruns, equipment failures) and functional ...
In addition, the coal to methanol (CtM) process and the CtSNG process have several identical units (, air separation, coal gasification, water gas shift, and acid gas removal) (Wen et al., 2016). Accordingly, choosing methanol as the coproduction chemical requires the least process adjustment and investment (Liu et al., 2019).
Coal processing involves crushing, screening and beneficiation. Processing is where coal is converted from runofmine (ROM) coal to a product that meets the customer's requirements. Mined coal can include lumps. Crushing to a manageable size is required. Coal crushing can include a two stage process, dependent on deposit size.
The preparation and application of ultraclean coal is one of the important aspects of clean energy technology. However, the preparation of ultraclean coal is mainly chemical methods, which are low in efficiency, high in energy consumption and expensive. It is urgent to find an effective method to prepare ultraclean coal. In this paper, the combined method of grinding and the collector ...
The average production of gangue accounts for 1015% of raw coal production [4,5], making coal gangue one of the biggest solid wastes in China. At present, utilization ratio of coal gangue can reach about 60% in some countries. ... 2019 A novel process to extract alumina and prepare FeSi alloys from coal fly ash. Fuel Process. Technol. 185 ...
Biomass is considered one of the prospective alternatives to energy and environmental challenges. The use of biomass as bioenergy has gained global interest due to its environmentally benign, renewable, and abundant characteristics. Numerous conversion technologies have been developed over time to convert biomass into various energy products. This review presents a summary of the different ...
The depositforming problem is one of the main bottlenecks restricting the yield and production benefit of iron ore pellets produced by coalfired rotary kilns. In order to implement measures to ensure the efficient production of pellets by coalfired rotary kilns, the mechanism and influencing factors on the deposit formation were reviewed.
As shown in Figure 1, domestic coal production and consumption volumes had been high from 2011 to 2020, with figures of 3,902 million tons (Mt) and 4,040 Mt in 2020, respectively. In addition, China also imported a considerable amount of coal to meet its domestic demand. Such a figure reached 303 Mt in 2020.
Intelligent unmanned mining is a key process in coal mine production, which has direct impact on the production safety, coal output, economic benefits and social benefits of coal mine enterprises. With the rapid development and popularization of 5G+ intelligent mines and coal mine intelligent equipment in China, the intelligentization of intelligent unmanned mining has become an important ...
processes used in coal‐to‐SNG. The proven and commercialized method of gasification for the coal‐to‐ SNG process, however, is the steam‐oxygen gasification process. Steam‐oxygen gasification In the steam‐oxygen process of converting coal to SNG, coal is
According to our literature survey, coal is a porous medium and its spontaneous combustion is a multiscale process.
Liquidphase methanol carbonylation is currently a main commercially viable process developed by BASF Corp. for the industrial production of methyl formate. Recently, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences has developed a new synthesis method to convert coal to methyl formate (denoted as CTMF).
According to the accurate model, the simulation for ZLD of fixedbed coal gasification wastewater treatment process is established, and this process is assessed from the perspective of thermodynamics, economy, and environment. The total energy consumption of ZLD process before optimization is × 10 8 W. The results of exergy analysis show ...
Introduction. Underground coal gasification (UCG) is the process of converting hydrocarbon materials into synthesis gas insitu. Underground coal gasification is sometimes referred to as insitu coal gasification (ISCG). The process has been developed over more than a century, though only a few projects currently operate on a continuous basis.
In this study, the characteristic temperature of coal spontaneous combustion, the generation law of indicator gases, the combustion process, and the division of the combustion stages of coal samples taken from Hongqingliang (HQL) and Dayan (DY) mines were investigated using thermogravimetric analysis experiment, indicator gas detection experimen...
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