This is an informal blog by the staff writers at Nova Analytical Systems. The intention is to talk about gas analyzers and issues related to manufacturing them. However, our interests are many and varied, so there will be numerous topics discussed. We are still amateurs at blogging. So if you see anything verbal or visual that is a copyright infringement, do not hesitate to notify us. We will correct any problems immediately. Thank you for visiting.
Düsseldorf (Germany), March 2, 2012 - Hyundai Orders Heat-Recovery Systems for EAFs
Tenova Re Energy signed a contract with Hyundai Steel for the supply of two iRecovery® systems for Hyundai's plant in Incheon, South Korea. The heat-recovery systems have to be installed on a 90-ton and an 80-ton EAF. The design of iRecovery systems is based on an evaporative cooling system that uses water at boiling point under high pressure. Such water, used as a cooling fluid, is forced into the cooling circuit. The absorption of energy coming from the EAF off-gases converts part of the cooling water into steam available for further applications. Industrial steam is available for applications like vacuum degassing or power generation. Start-up of the first system is scheduled for March 2013, while the second will be put into operation as early as August 2012.
The CONSTEEL® system is a unique steel-making process developed by TENOVA. It is the only commercial process that continuously pre-heats and feeds the metallic charge (scrap metal, pig iron, hot briquetted iron, etc.) into an electric arc furnace (EAF) while simultaneously controlling gaseous emissions. The charge is loaded directly from the scrap yard or the railcar to the charge conveyor, and pre-heated by furnace off-gas as it is automatically transported to the EAF.
The pre-heated charge is fed into the EAF where it is melted by the liquid steel in a continuous cycle. This permits constant flat bath operation, a key advantage over conventional batch processes where scrap is melted directly by the electric arc. The EAF gases are sent to a fume-cleaning plant where carbon monoxide and pollutants are burned in a combustion chamber without consuming fuel. The system uses heat from the flue gas for cogeneration of hot water and/or steam.
The Consteel system technology simplifies steelmaking logistics by minimizing scrap movements. Furnace bay crane activities using charge buckets are virtually eliminated, for lower operating and maintenance costs. Leakages in the water-cooled furnace sidewalls, roof and lances caused by arcing or scrap impact are avoided, thus minimizing the risk of water entering the furnace. The Consteel equipment is designed for high reliability and low maintenance, including reduced refractory maintenance. The result is a safer, more congenial working environment compared to typical conditions in the steel industry.
The ConsteeI system satisfies key melt shop requirements in the minimill business:
Low production costs
Reduced environmental impact
Improved Environmental Sustainability
The Consteel system reduces workplace noise and dust and eliminates bucket charge operations. The absence of charge buckets minimizes dust formation in the canopy hood, while the pre-heating section of the conveyor acts like a deposit chamber, allowing dust to settle on the scrap for recycling inside the furnace. Overall dust emissions are 5 - 9 kg/tls lower than those of a conventional top-charged EAF. The reduction of total energy required for melting has a tremendous impact on the reduction of GHG (Greenhouse Gases) emissions. Consteel provides the most environmentally friendly technology available on the market, with the ability to meet strict government regulations.
Addendum Jan 28, 2013 - here are a couple more pictures of Tenova CONSTEEL installations:
Consteel is the choice of steelmakers worldwide. If you are a steel maker interested in higher productivity and lower costs, contact Tenova Goodfellow for more information about the award-winning CONSTEEL® system.
In an earlier post, we talked about the exciting topic of industry brand names and terminology. We would now like to shine the light of clarity and honesty upon ourselves.
Some years ago, we regarded our analytical lingo as something to be guarded jealously. And if inquirers did not state their requests in the exact manner or terminology that we expected, we would reward them with hostility and rock-throwing. Well, that’s an exaggeration, but there is a tiny grain of truth in there. Now we jokingly refer to our past tendencies as the ‘exclusive Nova club’.
As with any industry, we eventually realized that we had to make sure that our internal company terminology wasn’t becoming a barrier to effective communication with our customers. But we also needed to balance this with due diligence in qualifying leads and obtaining accurate application data. It can only be said that we are continuing to work hard to ensure this balance is sustained while providing maximum approachability for our customers. I cannot conclude this paragraph by triumphantly describing how we implemented a ‘magic bullet’ solution. Much of this kind of thing has to do with personal attitude combined with company culture.
We have simply relaxed a little and have become a little less obsessed with making people use our terminology. We have also become a little less obsessed with covering our hindquarters. Of course, the need for clear data has not gone away – we are just a little more creative now in how we get it. We now try to be a little sharper when it comes to spotting important details in the application data that we do receive. Our analyzer designs have also improved to become less vulnerable to unexpected process conditions.
We get the feeling that some people assume that they will get a better deal if they omit important information. From the customer perspective, it should be noted that greater clarity of application data allows us to deliver better equipment at a better price.
In Part 3 of this discussion, we will define some exciting gas analyzer terms.
We’re Nova. We make gas analyzers for oxygen, carbon dioxide, methane, hydrogen, and other gases.