For more than 50 years, HYL (now Tenova
HYL) has developed technologies designed to improve steelmaking competitiveness
and productivity for steel facilities.
The HYL direct reduction (DR) technology,
while perhaps the best known, is accompanied by other technologies designed for
making steel in more efficient, cost-effective ways.
The HYL Process has been improved over
generations and the current status of the technology, the HYL ZR (or
Self-reforming) Process, was developed to allow reduction of iron ores in a
shaft furnace without external gas reforming equipment. This process scheme has
the ability to produce High Carbon DRI, which allows producers to obtain
maximum benefits of carbon in the steel making process, while for merchant sale
of the product, eliminating the need for costly briquetting equipment thanks to
its highly improved stability.
The recent alliance between Tenova HYL,
Techint and Danieli brings a new brand - ENERGIRON – to the forefront of the direct reduction industry. Current
environmental regulations worldwide bring more stringent demands to the design
of industrial plant operations of all types.
Energiron technology is characterized by its flexible process configuration which is able to satisfy and exceed these requirements. In regions where either the high cost or low availability of natural gas work against this traditional energy source, the process is easily configured to operate using coke oven gas, syngas from coal gasifiers and other hydrocarbon sources. More importantly, the air and water effluents of the process are not only low but easily controlled.
Energiron technology is characterized by its flexible process configuration which is able to satisfy and exceed these requirements. In regions where either the high cost or low availability of natural gas work against this traditional energy source, the process is easily configured to operate using coke oven gas, syngas from coal gasifiers and other hydrocarbon sources. More importantly, the air and water effluents of the process are not only low but easily controlled.
Incorporation of selective carbon dioxide
(CO2) removal systems has been a key factor over the past decade in reducing significantly
the emissions levels, providing an additional source of revenue for the plant
operator via the captured CO2. The high pressure operation and closed system of
an Energiron plant combined with the HYTEMP Pneumatic Transport System reduces
dust emissions to both air and settling tanks, making the process more
economical and environmentally friendly.
DRI quality-High Carbon DRI
In the Energiron process, carbon in the
DRI, mostly as iron carbide (Fe3C), is derived mainly from methane (CH4) and in
less extent from carbon monoxide (CO). The level of carbon is adjusted by
controlling the reducing gas composition and/or oxygen injection. Most of the
carbon in DRI (more than 90% for carbon levels of 4%) currently being produced
in the ZR scheme is in the form of iron carbide
(Fe3C). The high percentage of Fe3C in the DRI makes the product very stable and
presents a unique option related to storage, shipping and handling.
HYL is a member of the Tenova Group. HYL
actively develops projects for direct reduction plants worldwide under the
Energiron brand name. They started up the world's first successful direct
reduction plant in 1957. Over 40 DR modules have been supplied worldwide since
then.
For information on Nova gas analyzer
systems, give Mike or Dave at Nova a call, or send us an e-mail.
1-800-295-3771
sales at nova-gas dot com
websales at nova-gas dot com
Photos copyright © 2012 HYL
