Proposal and analysis of a poly-generation process for coal gasification and ironmaking

2022 ◽  
Vol 51 ◽  
pp. 101901
Author(s):  
Yiru Yang ◽  
Zhe Wang ◽  
Lei Guo ◽  
Xiaochun Wen ◽  
Zhancheng Guo
Keyword(s):  
Coal Gasification ◽  
Generation Process

Thermodynamic Analysis of a Solar-Coal Hybrid Poly-Generation Process for Methanol Synthesis and Power Generation

2018 ◽  
Author(s):  
Tuantuan Xin ◽  
Cheng Xu ◽  
Gang Xu ◽  
Wenyi Liu ◽  
Yongping Yang
Keyword(s):  
Power Generation ◽  
Solar Energy ◽  
Thermodynamic Analysis ◽  
Methanol Synthesis ◽  
Coal Gasification ◽  
Generation Process ◽  
Peak Period ◽  
Methanol Production ◽  
Concentrated Solar Energy ◽  
Power Load

To advance the utilization of the solar energy and coal resources as well as improve the flexibility of coal-based power plant, an improved solar-coal hybrid system for methanol production and power generation is proposed and thermodynamically analyzed. In the proposed system, the concentrated solar energy at high-temperature is used for heating the coal gasification to produce syngas for methanol synthesis; the waste material and heat from coal-to-methanol process are efficiently recovered in the conjunct power generation system; and the surplus electric power is optionally used for methanol synthesis by electrolysis process during the off-peak period. Through employing the proposed system, the solar energy and electricity (optional) could be effectively converted into methanol as stable chemical energy together with a preferable overall system thermal efficiency. The thermodynamic analysis results showed that, the overall energy and exergy efficiencies reaches 48.6 and 47.3%, respectively; the equivalent solar-to-methanol conversion efficiency can soar to 66.2%; and the net electricity-to-methanol efficiency reaches 61.6% with the power load reducing from 48.7% to 31.0%.

Theoretical Predictions of the Full-and Part-Load Performance of an Air-Blown Fluidized Bed Gasification Combined Cycle

1994 ◽  
Vol 208 (3) ◽  
pp. 191-197
Author(s):  
J E Davison ◽  
C D Soothill
Keyword(s):  
Fluidized Bed ◽  
Thermal Efficiency ◽  
Gas Turbines ◽  
Coal Gasification ◽  
Combined Cycle ◽  
Base Case ◽  
Generation Process ◽  
Part Load ◽  
Wide Range ◽  
Topping Cycle

It is important that any future power generation process should have a high thermal efficiency, be able to operate over a wide range of conditions and have low environmental emissions. This paper presents the results of work carried out by the British Coal Research Establishment (CRE) and European Gas Turbines (EGT) to evaluate the overall performance of an air-blown fluidized bed coal gasification combined cycle (topping cycle). This evaluation formed part of a major appraisal of the topping cycle chaired by EGT and which was carried out for the Department of Trade and Industry (DTI). Performance predictions for commercial plants based on topping cycle technology were produced using a computer flowsheet modelling package developed at the CRE. The predicted full-load thermal efficiency of a base case plant using commercially available gas and steam turbines was 46.9 per cent. An evaluation of different options for providing the input air to the gasifier and the effects of likely future emission limits were also evaluated. The part-loaded performance of the base case plant was predicted and it was shown to be capable of operating efficiently at power outputs down to 35 per cent or less. This flexibility means that the process should be suitable not only for base-load operation but also for locations where part-load operation may be required.

Cold Flow Simulation in Underground Coal Gasification (UCG) Cavities

2014 ◽  
Vol 1 (1) ◽  
pp. 15-24 ◽  
Author(s):  
Dipankar Chatterjee ◽  
◽  
Satish Gupta ◽  
Chebolu Aravind ◽  
Rakesh Roshan
Keyword(s):  
Coal Gasification ◽  
Flow Simulation ◽  
Underground Coal Gasification ◽  
Cold Flow

Influence of Constructive and Technological Parameters at Generated Spiral Parts with DLP 3D Printing Process

2019 ◽  
Vol 56 (4) ◽  
pp. 801-811
Author(s):  
Mircea Dorin Vasilescu
Keyword(s):  
3D Printing ◽  
Great Influence ◽  
Polymerization Process ◽  
Generation Process ◽  
Technological Parameters ◽  
Printing Process ◽  
The Third ◽  
Solid Models ◽  
Specific Factors ◽  
Printing Processes

This work are made for determine the possibility of generating the specific parts of a threaded assembly. If aspects of CAD generating specific elements was analysed over time in several works, the technological aspects of making components by printing processes 3D through optical polymerization process is less studied. Generating the threaded appeared as a necessity for the reconditioning technology or made components of the processing machines. To determine the technological aspects of 3D printing are arranged to achieve specific factors of the technological process, but also from the specific elements of a trapezoidal thread or spiral for translate granular material in supply process are determined experimentally. In the first part analyses the constructive generation process of a spiral element. In the second part are identified the specific aspects that can generation influence on the process of realization by 3D DLP printing of the two studied elements. The third part is affected to printing and determining the dimensions of the analysed components. We will determine the specific value that can influence the process of making them in rapport with printing process. The last part is affected by the conclusions. It can be noticed that both the orientation and the precision of generating solid models have a great influence on the made parts.

Coal Gasification Processes for Retrofitting Military Central Heating Plants: Overview

1992 ◽  
Author(s):  
Robert Sheng ◽  
Rene Laurens ◽  
Christopher F. Blazek ◽  
Gary Schanche
Keyword(s):  
Coal Gasification ◽  
Central Heating
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