Smelting on a combination blast with the replacement of natural gas by coke-oven gas alone or in a mixture with producer gas

Metallurgist ◽  
1997 ◽  
Vol 41 (12) ◽  
pp. 393-393
Author(s):  
N. G. Boikov ◽  
M. T. Buzoverya ◽  
A. P. Chebotarev ◽  
V. I. Dichko
Keyword(s):  
Natural Gas ◽  
Coke Oven ◽  
Producer Gas ◽  
Coke Oven Gas ◽  
Combination Blast

Atmospheric Tests of a Full Scale Gas Turbine Burner Fed With Blast Furnace Gas and Coke Oven Gas

2019 ◽  
Author(s):  
Edoardo Bertolotto ◽  
Alberto Amato ◽  
Li Guoqiang
Keyword(s):  
Blast Furnace ◽  
Natural Gas ◽  
Gas Turbine ◽  
Coke Oven ◽  
Full Scale ◽  
Flame Stability ◽  
Coke Oven Gas ◽  
Stability Range ◽  
Blast Furnace Gas ◽  
Inlet Conditions

Abstract The present paper describes atmospheric experimental tests of a new Ansaldo Energia full scale burner which was designed to burn fuels byproduct of steel making processes (mixtures of Blast-Furnace Gas (BFG) and Coke-Oven Gas (COG)), characterized by very low heating values (LHV∼2–3.5 MJ/kg) and very low stoichiometric air/fuel ratios (∼0.5–1 kg/kg). In particular, flame stability and blow-out margins were assessed for different burner variants and fuel compositions such as pure BFG, blends of BFG with increasing content of COG, and also a synthetic mixture of natural gas, hydrogen and nitrogen (NG/H2/N2). Except for pressure, all burner inlet conditions were simulated as in the actual gas turbine engine. The best performing burner among those tested demonstrated an excellent burning stability behavior over a wide operating range and stably burned pure BFG without any supplementary fuel. Furthermore, considering that in most operating concepts gas turbine engines for Ultra-Low BTU applications require a back-up fuel (such as oil, propane or natural gas) to ignite and ramp up or to perform load-rejections, the present atmospheric tests also assessed maneuvers to switch from natural gas operation to syngas operation. Also in this type of dual-fuel operation the burner demonstrated a wide flame stability range.

Reduction Behavior of Iron Ore Pellets with Simulated Coke Oven Gas and Natural Gas

2013 ◽  
Vol 84 (11) ◽  
pp. 1085-1097 ◽  
Author(s):  
Elsayed A. Mousa ◽  
Alexander Babich ◽  
Dieter Senk
Keyword(s):  
Natural Gas ◽  
Iron Ore ◽  
Coke Oven ◽  
Coke Oven Gas ◽  
Reduction Behavior ◽  
Iron Ore Pellets ◽  
Ore Pellets

Operating Experience of Ansaldo V94.2 K Gas Turbine Fed by Steelworks Gas

2002 ◽  
Author(s):  
Federico Bonzani ◽  
Giacomo Pollarolo ◽  
Franco Rocca
Keyword(s):  
Blast Furnace ◽  
Natural Gas ◽  
Gas Turbine ◽  
Operating Experience ◽  
Coke Oven ◽  
Operating Conditions ◽  
Total Power ◽  
Dual Fuel ◽  
Coke Oven Gas ◽  
Blast Furnace Gas

ANSALDO ENERGIA S.p.A. has been commissioned by ELETTRA GLT S.p.A, a company located in Trieste, Italy for the realisation of a combined cycle plant where all the main components (gas turbine, steam turbine, generator and heat recovery steam generator) are provided by ANSALDO ENERGIA. The total power output of the plant is 180 MW. The gas turbine is a V94.2 K model gas turbine dual fuel (natural gas and steelworks process gas), where the fuel used as main fuel is composed by a mixture of natural gas, blast furnace gas and coke oven gas in variable proportions according to the different working conditions of the steel work plant. The main features adopted to burn such a kind of variability of fuels are reported below: • fuel as by product of steel making factory gas (coke oven gas “COG”, blast furnace gas “BFG”) with natural gas integration; • modified compressor from standard V94.2, since no air extraction is foreseen; • dual fuel burner realised based on Siemens design. This paper describes the operating experience achieved on the gas turbine, focusing on the main critical aspect to be overcome and on to the test results during the commissioning and the early operating phase. The successful performances carried out have been showing a high flexibility in burning with stable combustion a very different fuel compositions with low emissions measured all operating conditions.

Environmental Aspects of a 10 MW Heavy Duty Gas Turbine Burning Coke Oven Gas With a Hydrogen Content of 60%

1993 ◽  
Author(s):  
T. Becker ◽  
M. Perkavec
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Hydrogen Content ◽  
Waste Product ◽  
Flame Temperature ◽  
Coke Oven ◽  
Steam Injection ◽  
Nox Emission ◽  
Coke Oven Gas ◽  
Coking Plant

In a coking plant in which coal tar is processed coke oven gas occurs as a waste product. Coke oven gas can be used as an alternative fuel for a gas turbine, instead of natural gas, if it meets the local environmental regulations. As a result of higher flame temperature of coke oven gas caused by the hydrogen content, the NOx emission of a gas turbine burning coke oven gas is higher than in case of natural gas. In Germany a 10 MW gas fired gas turbine has to meet a NOx emission limit of 150 mg/Nm3 @ 15% O2 dry. To reach this goal in case of MS 3002, which is installed in the coking plant as reported in previous ASME paper, steam injection is necessary. NOx- and CO-emissions of a gas turbine are difficult to be predicted by calculation, therefore measurements had to be done to see how good the predictions were, that were made in face of the local regulations. This paper deals with the NOx- and CO-emissions of a coke oven gas fired gas turbine with and without steam injection in difference to natural gas fired gas turbine. It shows also significantly lower CO2-emissions, because coke oven gas contains less hydrocarbon which is a great benefit for the greenhouse problem. It illustrates the effect of power augmentation and discusses the different thermal efficiency with steam injection. This paper gives a short glance to the effects which influence the emissions, so that the specific problems caused by burning coke oven gas can be understood.

Sign in / Sign up

Export Citation Format

Share Document