Operation of gas-cleaning systems for open-hearth and two-bath furnaces

Metallurgist ◽  
1984 ◽  
Vol 28 (7) ◽  
pp. 241-243
Author(s):  
V. N. Yurchenko ◽  
I. Ya. Shnitman ◽  
Yu. P. Lebedinets ◽  
T. G. Kuzovleva ◽  
V. N. Onichkin
Keyword(s):  
Open Hearth ◽  
Gas Cleaning

Oxygen lancing means … open-hearth waste-gas cleaning systems

JOM ◽  
1965 ◽  
Vol 17 (3) ◽  
pp. 261-266
Author(s):  
W. A. Dickinson ◽  
J. L. Worth ◽  
F. A. Thomas
Keyword(s):  
Open Hearth ◽  
Gas Cleaning ◽  
Waste Gas

Using a closed cycle for open-hearth furnace gas-cleaning apparatus

Metallurgist ◽  
1978 ◽  
Vol 22 (8) ◽  
pp. 553-555
Author(s):  
A. M. Eremkin ◽  
A. N. Sorokin ◽  
A. G. Dobrov
Keyword(s):  
Open Hearth ◽  
Open Hearth Furnace ◽  
Closed Cycle ◽  
Hearth Furnace ◽  
Gas Cleaning

System for technical diagnosis of exhausters in the gas-cleaning systems of an open-hearth shop

Metallurgist ◽  
1989 ◽  
Vol 33 (9) ◽  
pp. 175-176
Author(s):  
I. N. Kopitsa ◽  
T. N. Kuznetsov ◽  
N. A. Yakovenko ◽  
A. I. Belichenko ◽  
V. V. Chepa ◽  
...  
Keyword(s):  
Open Hearth ◽  
Technical Diagnosis ◽  
Gas Cleaning ◽  
Open Hearth Shop

TURBOSORP®: Emission Limits After 17th BimSchV (German Federal Immission Act) at Lowest Costs in a Simple Dry Process — Comparison of Dry/Semi Dry Processes and Results of Mercury and Dioxin Separation in a One Step Process

2003 ◽  
Author(s):  
H. K. Reissner ◽  
C. Brunner ◽  
K. Ba¨rnthaler
Keyword(s):  
Flue Gas ◽  
Cfd Simulation ◽  
Circulating Fluidized Bed ◽  
Open Hearth ◽  
Open Hearth Furnace ◽  
Gas Cleaning ◽  
Dry Process ◽  
Fabric Filter ◽  
Process Comparison ◽  
Spray Absorption

The TURBOSORP®-process is a dry flue gas cleaning process to remove certain pollutants like SO2, HCl, Hg, heavy metals, dioxins and furans. The main principle of this process is to bring flue gas in an intensive contact with Ca(OH)2, open hearth furnace coke, water and recirculated material in the Turboreactor. The Turboreactor operates as circulating fluidized bed in the manner of fast fluidisation. The gas/solid mixture leaves the Turboreactor at the top and the solids are separated in a fabric filter from the flue gas. More than 99% of the separated solids are recirculated to the Turboreactor and the rest leaves the process as product. Due to the high sorbent recirculation percentage a high sorbent utilization and low stoechiometric rates are reached in the TURBOSORP®-process. Due to the fact to have plants in operation for the spray absorption and for the TURBOSORP® process, a comparison definitely showed advantages for the TURBOSORP® process. Experiences of the plant start up of a TURBOSORP® plant in Poland concerning optimisation in pressure loss and hydrodynamics of the Turboreactor using CFD-Simulation are presented. Results concerning mercury and dioxin separation in our Turbosorp® pilot plant after the refuse incinerator MV Spittelau, Vienna, are discussed.

Gasification as an optimum alternative for the sludge management

2011 ◽  
Vol 6 (4) ◽  
Author(s):  
C. Peregrina ◽  
J. M. Audic ◽  
P. Dauthuille
Keyword(s):  
Power Generation ◽  
Anaerobic Digestion ◽  
Sewage Sludge ◽  
Combined Heat And Power ◽  
Gas Production ◽  
Waste Reduction ◽  
Fluidised Bed ◽  
Sludge Management ◽  
Gas Cleaning ◽  
Cleaning System

Assimilate sludge to a fuel is not new. Sludge incineration and Combined Heat and Power (CHP) engines powered with sludge-derived anaerobic digestion gas (ADG) are operations widely used. However, they have a room of improvement to reach simultaneously a positive net power generation and a significant level of waste reduction and stabilization. Gasification has been used in other realms for the conversion of any negative-value carbon-based materials, that would otherwise be disposed as waste, to a gaseous product with a usable heating value for power generation . In fact, the produced gas, the so-called synthetic gas (or syngas), could be suitable for combined heat and power motors. Within this framework gasification could be seen as an optimum alternative for the sludge management that would allow the highest waste reduction yield (similar to incineration) with a high power generation. Although gasification remains a promising route for sewage sludge valorisation, campaigns of measurements show that is not a simple operation and there are still several technical issues to resolve before that gasification was considered to be fully applied in the sludge management. Fluidised bed was chosen by certain technology developers because it is an easy and well known process for solid combustion, and very suitable for non-conventional fuels. However, our tests showed a poor reliable process for gasification of sludge giving a low quality gas production with a significant amount of tars to be treated. The cleaning system that was proposed shows a very limited removal performance and difficulties to be operated. Within the sizes of more common WWTP, an alternative solution to the fluidised bed reactor would be the downdraft bed gasifier that was also audited. Most relevant data of this audit suggest that the technology is more adapted to the idea of sludge gasification presented in the beginning of this paper where a maximum waste reduction is achieved with a great electricity generation thanks to the use of a “good” quality syngas in a CHP engine. Audit show also that there is still some work to do in order to push sludge gasification to a more industrial stage. Regardless what solution would be preferred, the resulting gasification system would involve a more complex scenario compared to Anaerobic Digestion and Incineration, characterised by a thermal dryer and gasifier with a complete gas cleaning system. At the end, economics, reliability and mass and energy yields should be carefully analysed in order to set the place that gasification would play in the forthcoming processing of sewage sludge.

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