filtration cyclones

Applications

By using the cpl. newly designed filter dust cyclones are problem
pre-separated by the cyclone effect. Therefore lends itself
the use of filtering cyclones not only the aspiration of large amounts of dust
to, but also in extracting dust problem. Also be deposited by the
cyclone separation sharp or glowing particles. Therefore, locations
are often used in foundries, steel mills and metal processing sectors.

Design and function
The tangential inlet, the conical shape of the cyclone and filter
through the resulting cyclone effect, is the largest part of the
absorbed dust deposited prior to the actual filter elements. Not only
the dust separated by the cyclone effect is reflected in the permanent
cleanable filter cartridge.
In this pre-separation effect the vast superiority of the cyclone
filter is compared with conventional filter systems in rectangular
shape.
In addition, through the rotating air movement inside the cyclone
filter the Backflush nozzle
the filter elements greatly improved.
The cleaning process itself is carried out using the proven JET
filter cleaning (with compressed air pulse) from the clean air side,
without interrupting the intake stream. This will ensure trouble-free
operation.
Rotary cyclone pre-separation filter
and the optimal cleaning performance
the filter cartridges prolong the life of the filter elements of
your system to a maximum.
All filtration cyclones are cleanable
Permanent filter cartridges for dust class "M" equipped.

Purification and filtration process

The raw gas is ideally performed in cross flow to the filter bags to
avoid an up-current against the dust sedimentation device. The raw gas
is directed through a distributor plate, which takes place at a
pre-separation and the raw gas stream is more uniform in the filter
housing. The deposition of particles found on the surface of the
filter media or on the surface of the filter cake instead of being
deposited on it. The corresponding flow resistance resulting from the
pressure loss of the filter cake and filter medium immediately after
the pulse-jet cleaning system (residual pressure loss). The cleaned
gas flows upward from the hose. Especially in long tubes (for example,
a hose length of 8 m with a tube diameter of 160 mm) and high filter
surface loading, the pressure drop across the tube bottom, ie at the
outlet from the tube via the inlet nozzle into the clean gas field,
also of importance. This and all other flow resistance of the filter
housing (raw gas inlet to the filter cake surface, the clean gas flow
from outlet to outlet hose clean gas channel) are summarized in the
enclosure pressure loss. After cleaning the filter bags, the dust
particles settle in the dust collecting chamber and the material is
transported from there mostly via screw conveyors and rotary valves.
In the online mode, the particles are located in the raw gas chamber
filtrates up continuously. Immediately after the pulse-jet cleaning,
the particle concentration in the vicinity of the filter bag is very
high. In this state it is, especially when finely dispersed dusts with
low agglomeration tendency for dust particles filtration cleaned.
This "inner" dust circulation can cause a significant portion of the
filter cake mass and thus contributes to the pressure loss. To
increase energy efficiency will therefore filter modules by raw and /
or clean-gas side shut-off during the cleaning fluid in a loose state.
In this so-called offline mode, the immediate rebound of the dust is
suppressed at adjacent filter bags. The filter can also be done by an
air pulse of much lower intensity.

dust deposition

In many industrial processes, air is used as the working fluid and is
varied in composition and absorbs impurities, eg in the pneumatic
conveying of bulk material.

Many dusts are harmful, toxic or explosive and harm people and the
environment. If the air be conducted later in the process back into
the atmosphere, the dust impurities must be removed from the air.
Often used as working medium, another gas such as nitrogen. Even then,
the foreign substances are filtered to either the purified gas can be
traced back to the process or to gain valuable products back.

supply equipment for expansion of the smelter and modernization of the plate mill

Siemens: 210 Million Euro Order from Mexico
02.03.2007 [10:49]:: Siemens to supply equipment for expansion of the
smelter and modernization of the plate mill of AHMSA

The Siemens Industrial Solutions and Services (I & S) of the Mexican
steelmaker Altos Hornos de Mexico SAB de C.V. (AHMSA) received several
orders for equipment for the expansion of the steel mill and the
modernization of the plate mill in Monclova. The project includes new
facilities for steel works, dust and casting as well as the
modernization and upgrading of the existing plate mill into a Steckel
rolling mill. With the completion of the entire project is mid-2009,
AHMSA's production capacity of 500,000 tonnes of heavy plate may
extend to one million tons. The order volume amounts to 210 million
euros (275 million U.S. dollars).

AHMSA, one of the leading iron and steel producer in Mexico, operates
in Monclova, Coahuila, an integrated steel plant. The company mainly
produces flat products - in 2006 over three million tons - and is the
only producer of heavy plate in Mexico. The product range includes
products for flat hot-rolled and cold rolled strips, tinplate,
tin-free steel and plate. The plate is in shipbuilding, uses the
construction and oil industries and the manufacture of machinery,
tools, pressure vessels and containers.

In order to consolidate its leading position in the regional steel
market, AHMSA has decided to expand its steel production by 1.2
million tons per year. As part of this expansion project, the
production capacity for heavy plate and hot strip will rise to one
million tons.

Siemens is responsible for developing, engineering and supply of
equipment for the new steel plant and the modernization and upgrading
of heavy plate rolling mill at a Steckel rolling mill. Supplied with
an electric arc furnace includes a capacity of 1.2 million tons per
year, a 150-ton ladle furnace including an alloying agent system, a
dust removal system, a single-strand slab caster, can be cast with the
slab with a width of 2438 millimeters, a Steckel rolling mill and the
associated automation systems, energy and water supply installations
and customer training. Siemens VAI Metals Technologies GmbH & Co,
Linz, Austria supplies the metallurgical equipment, the UK, Siemens
VAI Metals Technologies UK Limited, the Steckel rolling mill.

Further information about solutions for steel works, rolling mills and
processing lines

Metals Technologies (MT), a division of the Siemens Industrial
Solutions and Services Group (I & S), is one of the world's leading
engineering and plant construction companies for the iron and steel
industry, the flat-rolling sector of the aluminum industry and the
mining business. MT, created from the integration of Voest-Alpine
Industrieanlagenbau, Linz, Austria, and the electrical engineering
product business and automation solutions of Siemens, provides a
comprehensive range of services for metallurgical processes,
automation solutions and services for the entire plant life cycle.

The Siemens Industrial Solutions and Services Group (I & S) is the
systems and solutions integrator for industrial and infrastructure
facilities and global service provider for the plant and projects
business covering planning, installation, operation and the entire
life cycle. I & S uses its own products, systems and process
technologies to enhance productivity and competitiveness of
enterprises in the sectors of metallurgy, water treatment, pulp and
paper, oil and gas, shipbuilding, mining, airport logistics, postal
automation, intelligent traffic systems and industrial services. With
a turnover of 8.819 billion € I & S employed in fiscal 2006 (Sept. 30)
36,200 people worldwide.

dust control engineering

The discipline of dust control engineering will be the subject of this blog very soon.