Deep learning-assisted multi-objective optimization of coke dry …
Coke dry quenching is a promising technology for energy saving and environmental protection in the industrial sectors. Prediction of system efficiency index (SEI) and dynamic adjustment of operating parameters are essential to ensure high system efficiency. ... blast furnaces and coke plants are major consumers of energy and carbon …
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INTRODUCTION OF CURRENT TECHNOLOGIES FOR …
KOTARO ITAKURA*. SYNOPSIS: Nowadays, Coke Dry Quenching (CDQ) plant has been regarded as essential facility as a counter-measure against environmental problems like global warming by CO2 and air pollution. CDQ has widely spread especially in Asia. Because one large CDQ (single-chamber CDQ) is more efficient than multiple small CDQ …
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Odisha's Neelachal Ispat Steel Plant now open to …
A Coke Battery of 0.88 MTA endowed with a dry quenching facility. A Sinter Plant and Blast Furnace with 1.71 MTA and 1.1 MTA capacity respectively. A Captive Power capacity of 62.5 MW. A Steel …
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Coke Dry Quenching (CDQ)
PRC Wuhan Iron & Steel (Group) Corporation China Steel Corporation (Taiwan) Qian'an Zhonghua Coal-chemical Industrial Co., LTD Jinan Steel Co.,Ltd TATA STEEL Limited (India) Ningbo Iron & Steel (Group) Co., LTD Coking plant Baotou Iron & Steel (Group) Co., LTD Coking plant Zibo Hongda Coking Co., LTD Xinyu Iron & Steel (Group) Co., …
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Exergy Analysis of a Coke Dry Quenching System
Coke Dry Quenching (CDQ) process has been successfully applied in the No.3 coke oven plant of China Steel Corporation for the purposes of energy saving as well as …
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Coke dry quenching and implications on coke quality and …
The advent of coke dry quenching ... in coke-making benefited coke plants not only in reducing coke moisture but also in extracting a part of the sensible energy within ... The potential for improvements in energy efficiency and CO 2 emissions in the EU27 iron and steel industry under different payback periods. J Cleaner Prod. 2013;52:71–83 ...
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Tata Steel
India's first private integrated steel company, Tata Steel, is engaged in mining, iron-making, steelmaking, casting, rolling, finishing, supply chain, and marketing and sales. We have been strengthening our operations through a combination of organic and inorganic growth initiatives. Our steelmaking operations at Jamshedpur and Kalinganagar ...
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China's coke industry: Recent policies, technology shift, …
Highlights With 60% of world coke output, China's coke making has big energy/pollution issues. Actions were taken to improve energy and environmental performance of coke plants. China's coke industry is experiencing an unprecedented technology shift. Another shift, focusing on technologies of energy and emission saving, …
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Model predictive control for improving waste heat recovery in coke dry
In traditional CWQ (coke wet quenching) system, hot coke is cooled by spraying water. The approach results in high CO 2 emissions and thermal energy loss. The CDQ (coke dry quenching) system is an energy conserving alternative, in which hot coke is quenched by inert gases instead of spraying water in the quenching tower [1]. The …
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Waste Energy Recovery Technology of Iron and Steel …
In China, many technologies have been applied to improve the energy efficiency of the processes. Among these technologies, the waste energy recovery technology, for example, CDQ (coke dry quenching), CCPP (combined cycle power plant), waste energy recovery from Linz-Donawitz process, etc. have been used widely and contributed a lot to the …
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Coke dry quenching and implications on coke quality and …
The coke dry quenching (CDQ) technology allows the coke plant to quench the coke using inert recirculating gas to below 200°C, thereby producing quality coke with <1 wt-% moisture. It further eliminates environmental pollution while extracting energy from hot coke to generate electricity [ 1 – 6 ].
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Coke dry quenching and implications on coke quality and …
The coke dry quenching (CDQ) technology allows the coke plant to quench the coke using inert recirculating gas to below 200°C, thereby producing quality coke …
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Coke Dry Quenching (CDQ) System｜NIPPON STEEL …
CDQ is a system where hot coke removed from coke ovens at a temperature of approximately 1,000°C is cooled and kept dry with inert gas and the resulting steam …
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Energy saving and some environment improvements in coke-oven plants
In Germany, a combination of the coke dry cooling and coal preheating plant has been developed [5], [9], [14], [15], [16].This system realizes primary energy saving (e.g. gas) instead of energy recovery of lower exergy value (steam) and thus it is thermodynamically preferred (see, e.g., [29]).In addition, the well-known advantages of …
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Design and Engineering Challenges for Installation of Coke Dry …
Note: All the above CDQ plants have stand-by wet quenching facility 7.0 SINGLE CDQ CHAMBER OVER MUL TIPLE CHAMBER Installation of multiple cooling chambers to avoid stand-by wet quenching needs ...
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Technologies and fundamentals of waste heat recovery …
Coke dry quenching Iron ore sinter plant Slag waste heat recovery: Fluidized bed: with internal heat exchanger: Granular materials are fluidized by blowers located on the bed bottom Particle size are typically fine The heat stored in granular materials is transferred into working fluids in the boiler tubes: Hot particles in combustor
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Coke dry quenching and implications on coke quality …
The coke dry quenching (CDQ) technology allows the coke plant to quench the coke using inert recirculating gas to below 200°C, thereby producing quality coke …
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INTRODUCTION OF CURRENT TECHNOLOGIES FOR …
Recently, an improved new wet quenching tower which reduces the dust emission volume and the Coke Stabilization Quenching (CSQ) is gradually spreading, but CDQ is more …
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The Effects of Calcination-Water Quenching on Quartz
In the process of quartz purification by calcination water quenching, the different expansion rates of gangue minerals and quartz were used to produce cracks or remove fluid inclusions, which is conducive to subsequent purification. However, the role and mechanism of calcination-water quenching are still lacking in research. In this …
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CO2 emission accounting and emission reduction analysis of …
The power consumption of the enterprise is 449.9 kWh per ton of steel, of which the proportion of self-generation is 55.2%, including power generation from the self-built power plant, waste heat power generation from coke dry quenching (CDQ), power generation from sintering waste heat (PGSWH) and blast furnace top gas recovery …
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Coke Making: Most Efficient Technologies for Greenhouse …
Coke dry quenching (CDQ), combined cycle power plant (CCPP), and CO 2 capture by slag carbonization (CCSC) and CCSC allow to reduce the net carbon emissions by 56.18, 134.43, and 222.89 kgCO 2 per ton crude steel inside the industrial parks, respectively, including both direct and indirect emissions (Fig. 2.8).
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Soft sensor development for improving economic efficiency …
Energy conservation and emission reduction in steelmaking have received significant attention owing to the high amount of fossil energy consumption and emissions. Many methods have been adopted for saving energy, among which coke dry quenching (CDQ) is a cost-effective option. In this work, a CDQ process in a steel plant in China is …
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The Journey of Iron Making – Blog
April 5, 2022. Story of steel production begins with Iron making and for any integrated steel plant (ISP) like ours, Conversion of heterogenous Raw materials into hot Liquid Iron involves pre-processing of raw materials before its ready to be charged into Blast furnaces. This preprocessing involves agglomeration of iron ore into Sinter and ...
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Stacked autoencoder for operation prediction of coke dry quenching
Coke dry quenching (CDQ) is widely adopted for waste heat recovery in iron and steel plants. In this work, an economic benefit index was introduced to evaluate the performance of the CDQ system and stacked autoencoder (SAE) based deep neural networks are adopted for CDQ operation prediction. Based on the prediction results, a …
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Dry Quenching: Clean Technology in Coke Production
Coke in the blast furnace has two functions: As a fuel producing the heat required for reduction and melting the iron; and. To supply the reducing agent (mainly …
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Experimental investigation on granulation characteristics …
1. Introduction. Molten blast furnace slag (BFS) is the main by-product of iron making process with the 1450–1550 °C discharge temperature [1], which contains large amounts of physical sensible heat and belongs to high-quality waste heat resource [2].Each ton of molten slag contains 1260–1880 kJ thermal energy which is equivalent to 60 kg …
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Coke dry quenching and implications on coke quality …
water (known as coke wet quenching – CWQ) as a quenchant to bring the temperature of the incandescent coke from 1000°C to nearly below 200°C. Though this technology serves the purpose of quenching, it misses out on opportu-nities to conserve energy. The coke dry quenching (CDQ) technology allows the coke plant to quench …
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Thermodynamic analysis of a coke dry quenching unit
A thermodynamic analysis (first and second laws) was performed for a coke dry quenching (CDQ) unit with all data obtained in the site and under the unit normal operating conditions. Expressions to evaluate the coke specific heat, enthalpy, entropy and physical and chemical exergies, as well as particulate material (dust) formation indices, …
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Advanced wet quenching for iron and steel sector
The iron and steel sector is the second-largest industrial user of energy, consuming 616 Mtoe in 2007 and is also the largest industrial source of CO2 emissions. The five most imp
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Dry Quenching of Hot Coke – IspatGuru
Dry Quenching of Hot Coke. Coke dry quenching (CDQ) is an energy saving process used during the production of coke in the coke oven battery. A CDQ plant is also called coke dry cooling plant (CDCP). In the traditional CWQ (coke wet quenching) process, the red-hot coke which is pushed from the coke oven is cooled by spraying water on the hot …
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