Hydrothermal Combustion of Coal in Supercritical Water

Wang, Shuzhong; Xu, Donghai; Tang, Xingying; Wang, Yuzhen; Zhang, Jie; Ma, Honghe; Qian, Lili; Li, Yanhui

doi:10.1007/978-981-13-9326-6_4

Cited by 2 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since 2005, Xi'an Jiaotong University has been committed to the research on the SCHC theories and applications, such as the mechanism and process development of clean conversion and utilization of coal-based fuels [20,21], the mechanism and kinetics of hydrothermal combustion of methanol and other alcohol fuels [39,40,78], the development of high-efficiency HFR [70] and multi-component thermal fluid generator [79]. Its laboratory now has one multi-functional SCHC bench, whose main reactor is shown as below (Figure 5a).…”

Section: Xi'an Jiaotong Universitymentioning

confidence: 99%

“…Therefore, it has an extremely superior environmental protection performance. At present, there are three main ways for its implementation: (1) coal-based fuel goes directly into HFR in the form of coal water slurry [21], (2) coal-based fuel first enters the supercritical water gasification (SCWG) reactor in the form of coal water slurry. After solid residues (mainly consisting of inorganic salts, oxides, and gravel) are removed, the products with abundant syngas and methane are injected into HFR [19], as (3) coal-based fuel first enters the SCWG reactor in the form of coal water slurry.…”

Section: Clean Conversion and Utilization Of Coal-based Fuelmentioning

confidence: 99%

“…Additionally, supercritical hydrothermal combustion (SCHC) can even be regarded as a means of obtaining energy [16][17][18]. For example, the SCHC of coal is a new combustion technology that can realize the efficient utilization of clean energy [19][20][21]. The formation of pollutants like NOx, SOx and dust can be restricted without desulphurization, denitrification and dust-collecting equipment, not to mention the low-cost capture of CO 2 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Review on an Advanced Combustion Technology: Supercritical Hydrothermal Combustion

Cui

Wang

et al. 2020

Applied Sciences

Self Cite

View full text Add to dashboard Cite

Supercritical hydrothermal combustion, a new and promising homogeneous combustion technology with a wide range of application scenarios and broad development prospects, provides creative ideas and means for the enhanced degradation of organic wastes, hydrothermal spallation drilling, thermal recovery of heavy oil, etc. This technology is elaborated upon in five parts: (1) introducing the main devices including semi-batch reactor and continuous reactor to study the hydrothermal flame in accordance with research institutions, (2) presenting the research status of related numerical simulation from the angles of reaction kinetics and flow-reaction, (3) summarizing the characteristics of hydrothermal flame and combustion by five key parameters, (4) dividing up ignition process and explaining ignition mechanism from the perspectives of critical physical properties of water and heat transfer and mixing conditions, (5) discussing and forecasting its industrial applications including hydrothermal spallation drilling, the thermal recovery of heavy oil, the clean conversion and utilization of coal-based fuel, and the harmless treatment of pollutants. By and large, this paper analyzed in detail everything from experimental equipment to industrial applications, from combustion characteristics to ignition mechanisms, and from summary conclusions to prospect prediction. In the end, herein is summarized a couple of existing paramount scientific and technical obstacles in hydrothermal combustion. Further significant studies in the future should include excellent reactors, advanced monitoring techniques, and powerful computational fluid dynamics.

show abstract