- Mon - Sat 8:00 - 18:00
- [email protected]
- 0086-21-58386256
1. Introduction. Coal gasification slag (CGS) is a solid waste discharged from the coal gasification process [1].Depending on different discharge processes, CGS is mainly classified into coarse slag (furnace bottom slag with grain sizes of 3.75–9.00 mm) and fine slag (less than 50 μm) [2].Approximately 0.15–0.2 tons of CGS are emitted for …
A hydrothermal synthesis method was developed to produce high crystallinity ZSM-5 zeolite using coal gasification coarse slag (CGCS) as the raw material. Instead of the expensive NaOH(s.), Na2SiO3(s.) was utilized to activate, depolymerize, and recombine Si and Al elements in the CGCS. The mother liquor circulation technology …
Coal gasification is one of the most promising coal clean usage technologies, which can realize highly efficient and environmentally friendly coal …
This paper focuses on the Jinhua furnace coal gasification slag (fine slag, FS; coarse slag, CS) as the research subject, analyzing its composition and structural …
The most important stage was the gasification reaction between the char formed and CO 2 agent at the set temperatures. Fig. 2d displays the gasification process of the raw coal and it can be seen ...
Coal gasification slag (CGS) fine aggregate is a byproduct of integrated coal gasification combined cycle (IGCC) power plants. In Japan, the Japanese Industrial Standard JIS A 5011–5:2020 [] was established in 2020, and the use of CGS as a concrete aggregate was considered.This study investigated the strength properties of concrete in …
The objective of the project entitled "Utilization of Lightweight Materials Made from Coal Gasification Slags" was to demonstrate the technical and economic viability of manufacturing low-unit-weight products from coal gasification slags which can be used as substitutes for conventional lightweight and ultra-lightweight aggregates.
The coal gasification system uses coal from Hongshaquan Coal Mine and Heishan coal mine, east of Junggar Basin, Xin‐ jiang, and oxygen (purity vol % ≥ 99.6) as raw materials. Pressurized plasma gasification of coal gasification and the chilling process of General Electric Shenhua Gasification Tech‐
With the continuous advancement of coal gasification technology, the production of coal gasification fine slag (CGFS), a significant by-product, has been …
Coal gasification, a pivotal technology for the clean and efficient utilization of coal, is widely employed in the modern coal chemical industry [1,2,3].However, as coal is not entirely gasified during this process, the residual carbon (RC) combines with minerals and other impurities to form a solid residue, i.e., coal gasification slag (CGS) [], whose …
In this paper, the production, composition, morphology, particle size structure and water holding characteristics of coal gasification slag are introduced, and the …
Gasification in entrained flow reactors is now one of the most dynamically developed technologies of thermal conversion of coal. The basic, solid by-product of this process is slag, and in some cases also fly ash. In Poland, so far there have been no examples of industrial application of coal gasification. However, the high popularity of such systems …
Gasification technology enables the clean and efficient utilization of coal. However, the process generates a significant amount of solid waste—coal gasification slag. This paper focuses on the Jinhua furnace coal gasification slag (fine slag, FS; coarse slag, CS) as the research subject, analyzing its composition and structural …
The separation of carbon-mineral components in coal gasification fine slag (CGFS) is an important prerequisite for achieving large-scale utilization of the CGFS resources. This study aims to reveal the influence of three physical separation methods on the distribution features, occurrence modes, and environmental risk of typical heavy …
Coal gasification fine slag (FS) is a typical solid waste generated in coal gasification. Its current disposal methods of stockpiling and landfilling have caused …
Coal gasification fine slag (CGFS) is a kind of amorphous silica-alumina solid waste with large surface area and broad pore-size distribution which has the potential to store and release humic acid (HA). In this study, the adsorption capacity of HA onto CGFS tuned by contact time, HA initial concentration, temperature, pH and CGFS …
Coal gasification fine slag (CGFS) is one of the by-products of coal gasification process, which is mainly composed of inorganic minerals and residual carbon. The key to realize the high-value utilization of CGFS is separating the residual carbon and mineral in CGS effectively. Owing to irregular distribution of carbon in different size of …
Coal gasification slag is a solid waste that is generated during the coal gasification process; this material can be divided into two categories, coal gasification coarse slag and coal gasification fine slag (CGFS), depending on the characteristic particle size of the material.
Fine slag (FS) is an unavoidable by-product of coal gasification. FS, which is a simple heap of solid waste left in the open air, easily causes environmental pollution and has a low resource utilization rate, thereby restricting the development of energy-saving coal gasification technologies. The multiscale analysis of FS performed in this study …
Coal gasification coarse slag (CGCS) is solid waste generated during coal gasification. The mainly treatment method of CGCS is storage and landfill, which causes severe environmental pollution and waste of land resources. Sodium silicate can be synthesized using CGCS after impurities are removed for the high content of amorphous …
The gasification evaluation indicators of CE, PE and HHV were adopted to grasp the optimal operation conditions of coal gasification reaction driven by slag waste heat, as shown in Fig. 8. The values of CE, PE and HHV increased and then remained constant with the increase of temperature and CO 2 /C.
Helps the economic competitiveness of coal, in general, and integrated gasification combined cycle (IGCC) processes in particular. The interest in using slag is largely driven by the avoided landfill cost 1. Avoided landfill costs can be significantly different for utilities with and without captive landfills.
Here, a novel adsorbent was prepared from coal-gasification fine slag by acid leaching and amine modification and was used for CO 2 capture. The fine slag adsorbent (FSA) material was found to have a specific surface area of 541 m 2 g −1 and a pore volume of 0.543 cm 3 g −1.To improve the CO 2 adsorption capacity of the …
Coal gasification slag (CGS) is a solid waste produced in the process of coal gasification reaction. Coal gasification is the process of reacting coal with gasification agents (hydrogen, air, oxygen, and water vapor) at a certain temperature and pressure to convert the combustible part of coal into combustible gas, while the ash in …
Coal gasification fine slag (CGFS) is one of the by-products of coal gasification process, which is mainly composed of inorganic minerals and residual …
Coal gasification technology has led to a significant discharge of solid waste known as coal gasification slag (CGS). However, the high composition of Si and Al in …
The high value of coal gasification slag and the trend towards functional use of its resourcefulness. The fractional utilization of the carbon and ash components of the gasification slag is a prerequisite for its solid waste disposal. However, as CGFS undergoes a complex heat and mass transfer gasification process, its carbon and ash …
Coal gasification appears to be a significant process for cleaner and more cost-effective generation of energy and other chemical products ... When the same process is done with plasma coal gasification, very low slag output occurs. Thus, the disposal of hazardous wastes to be generated is realized. The calorific value of coal is very low ...
Coal gasification has been emerging as the most important coal utilization technology. Gasifiers are broadly classified into fluidized, fixed, and entrained bed gasifiers. ... (dryor slag), pressure (atmospheric or pressurized) and feed (dry or slurry) (Basu 2006). The basic characteristics of fixed, fluidized and entrained bed gasifiers has ...
Coal gasification slag (CGS) has pozzolanic activity, and it could be used as a supplementary cementitious material after be activated by some solid waste, which will promote resource utilization of solid waste. In this paper, coal calcium carbide slag and desulfurization gypsum were chosen to activate CGS, the excitation effects were …