scholarly journals Thermal-detoxification equipment and utilization of heat from cokebattery smokestack gases

2019 ◽  
pp. 471-478
Author(s):  
Ewgen Danilin ◽  
Alexander Lobov
Keyword(s):  
Electric Power ◽  
New Technology ◽  
Boiler House ◽  
Coke Oven ◽  
Flue Gases ◽  
Coke Oven Gas ◽  
Waste Recovery ◽  
Power Stations ◽  
Coke Plants ◽  
Power Standard

Kotloenergoprom Stock Co. has developed new technology of thermal rendering harmless andwaste recovering of heat of flue gases from coke-oven batteries in one unit.In 2000, Kotloenergoprom Stock Co. had executed the design of the first in the world Unit ofthermal rendering harmless and waste recovering of heat of flue gases from the coke-oven batteryNo. l installed in "Zaporozhkoks" (65 furnaces, H = 7.0 m, V = 41.6 m3).The complex "Coke-oven battery - Unit" operates in the special mode using automatic processcontrol system. Introduction the above Unit in 2002 had ensured: decrease of NOx contents influe gases from coke-oven battery in 1.5+2 times and CO on 90+ I 00 % with providinginternational norms of ejections; rebuming solid carbon inclusions and combustible components(H2, CH4, CmHn) in flue gases; stabilization of hydraulic mode of coke-oven battery operation;non-shock putting coke-oven battery into operation directly to chimney stack in case of scheduledor accident stopping the Unit; waste recovery of heat of flue gases from coke-oven battery inquantity up to 6.0 Gkal/h; producing up to 85 tph of steam with energetic parameters at additionalcombustion of coke-oven gas (without building new chimney stack), that lets to produceadditionally 6 MWt of electric power;Standard scheme of producing heat and electric power at by-product coke plants applying usualboiler houses and power stations is irrational. The more effective is to apply the scheme ofproducing heat and electric power with simultaneous rendering harmless and waste recovery ofheat of flue gases from coke-oven batteries in the special Units using existing chimney stacks ofcoke-oven batteries.Cost of building the Unit is not more than cost of usual boiler house or power station with equalcapacity.

scholarly journals Intensifying the PC conversion in the raceway by means of coke oven gas

2020 ◽  
Vol 76 (1) ◽  
pp. 19-29
Author(s):  
A. Babich ◽  
F. Hippe ◽  
R. Lin ◽  
J.-P. Simoes ◽  
D. Senk
Keyword(s):  
Blast Furnace ◽  
New Technology ◽  
Coke Oven ◽  
Reaction Chamber ◽  
Gas Analysis ◽  
Conversion Degree ◽  
Minor Amount ◽  
Image Analysis System ◽  
Coke Oven Gas ◽  
Local Cooling

Among numerous measures to accelerate the PC conversion within the blast furnace (BF) raceway, local increase of oxygen concentration is the most common one. On the other hand, the presence of cold media (oxygen) in the vicinity of the coal stream might affect its ignition and combustion negatively. A minor amount of coke oven gas (COG) may increase the temperature and consequently accelerate the coal conversion. To examine this effect, laboratory trials under blast furnace simulating conditions were performed using the Multifunctional Injection Rig for Ironmaking (MIRI). The results of the simulation testified a higher conversion degree of coal while adding the COG. The temperature increase is measurable in the reaction chamber and the off-gas stream. Optical microscopy of the original PC particles and residues after reaction confirm the findings of the off-gas analysis and the increase in temperature during the experiments with addition of COG. The thermogravimetric analysis was applied to determine and to compare the behaviour of coal in different atmospheres including an atmosphere with COG. A stand at one tuyère at a modern BF was erected and tests were performed targeting the observation of the ignition behaviour of coal at different COG rates, using a camera image analysis system. Laboratory trials under blast furnace raceway simulating conditions showed, that even a small amount of COG significantly improves the PC conversion degree. A new technology of PC injection, including addition of small amount of COG to the PC transporting gas, aimed at neutralization of the oxygen local cooling effect, elaborated, justified and tested.

scholarly journals Techno-Economic and Carbon Footprint Analyses of a Coke Oven Gas Reuse Process for Methanol Production

Processes ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 1042
Author(s):  
Jean-François Portha ◽  
Wilmar Uribe-Soto ◽  
Jean-Marc Commenge ◽  
Solène Valentin ◽  
Laurent Falk
Keyword(s):  
Carbon Dioxide ◽  
Carbon Footprint ◽  
Environmental Sustainability ◽  
Computer Aided Design ◽  
Carbon Dioxide Capture ◽  
Coke Oven ◽  
Production Costs ◽  
Flue Gases ◽  
Coke Oven Gas ◽  
Methanol Production

This paper focuses on the best way to produce methanol by Coke Oven Gas (COG) conversion and by carbon dioxide capture. The COG, produced in steelworks and coking plants, is an interesting source of hydrogen that can be used to hydrogenate carbon dioxide, recovered from flue gases, into methanol. The architecture of the reuse process is developed and the different process units are compared by considering a hierarchical decomposition. Two case studies are selected, process units are modelled, and flowsheets are simulated using computer-aided design software. A factorial techno-economic analysis is performed together with a preliminary carbon balance to evaluate the economic reliability and the environmental sustainability of the proposed solutions. The production costs of methanol are equal to 228 and 268 €/ton for process configurations involving, respectively, a combined methane reforming of COG and a direct COG separation to recover hydrogen. This cost is slightly higher than the current price of methanol on the market (about 204 €/ton for a process located in the USA in 2013). Besides, the second case study shows an interesting reduction of the carbon footprint with respect to reference scenarios. The carbon dioxide capture from flue gases together with COG utilization can lead to a competitive and sustainable methanol production process depending partly on a carbon tax.

Improved cost calculations of coke-oven gas at coke plants

2009 ◽  
Vol 52 (4) ◽  
pp. 186-188 ◽  
Author(s):  
S. V. Vashchilin ◽  
T. V. Osipovich ◽  
T. A. Ermolenko ◽  
E. I. Kotlyarov ◽  
V. A. Kornilova ◽  
...  
Keyword(s):  
Coke Oven ◽  
Coke Oven Gas ◽  
Coke Plants ◽  
Cost Calculations

A New Technology for Producing Hydrogen and Adjustable Ratio Syngas from Coke Oven Gas

2007 ◽  
Vol 21 (6) ◽  
pp. 3588-3592 ◽  
Author(s):  
Jun Shen ◽  
Zhi-zhong Wang ◽  
Huai-wang Yang ◽  
Run-sheng Yao
Keyword(s):  
New Technology ◽  
Coke Oven ◽  
Coke Oven Gas

An exergy study on compression ignition engine operating with biogas gas and coke oven gas

2020 ◽  
Vol 33 (2) ◽  
pp. 183
Author(s):  
Hongqing Feng ◽  
Zhirong Nan ◽  
Xinyi Wang ◽  
Weiwen Zhang
Keyword(s):  
Coke Oven ◽  
Compression Ignition ◽  
Coke Oven Gas ◽  
Compression Ignition Engine

Catalytic Partial Oxidation of Coke Oven Gas to Syngas over Ni/SiO2 Catalyst Modified by Rare Earth Metal Oxide in a Membrane Reactor

2010 ◽  
Vol 156-157 ◽  
pp. 1024-1028
Author(s):  
Da Hai Hu ◽  
Xiong Gang Lu ◽  
Hong Wei Cheng ◽  
Wei Zhong Ding
Keyword(s):  
Rare Earth ◽  
Partial Oxidation ◽  
Membrane Reactor ◽  
Coke Oven ◽  
Oxygen Permeation ◽  
Catalytic Partial Oxidation ◽  
Permeation Flux ◽  
Coke Oven Gas ◽  
Permeable Membrane ◽  
Oxygen Permeation Flux

The performance of Ni/SiO2 Catalysts modified by La2O3, ZrO2 and CeO2 were tested in a BaCo0.7Fe0.2Nb0.1O3-δ (BCFNO) membrane reactor by catalytic partial oxidation of coke oven gas (COG) under atmospheric pressure. The results show that the oxygen permeation flux increased dramatically with Ni/RxOy/SiO2 (R = La, Zr or Ce) catalysts by adding the element of rare earth especially the La during the reforming reaction. At optimized reaction conditions, the dense oxygen permeable membrane had an oxygen permeation flux around 16.4 ml/cm2•min and a CH4 conversion of 99.2% have been achieved at 900 oC.

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