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7/29/2019 Folleto Filtro y Depurador - Dust Collection & Gas Scrubbing (Ingles)
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Process B.V.
Dust Collection & Gas Scrubbing
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Dust Collection & Gas Scrubbing
TEMA Process B.V. oers Dust Collection & Gas
Scrubbing equipment and systems or emission
control, gas cleaning and product recovery.
TEMA Process designs the Dust Collection & Gas
Scrubbing equipment and systems in accordance
to the latest standards, local conditions and product
specications.
Tema Process Dust Collection & Gas Scrubbing Line
include:
Jet bag FiltersCyclones
Venturi Scrubbers
Packed Tower Scrubbers
Dry Scrubbers
Cyclones in combination with Jet bag Filters
Cyclones in combination with Packed Tower
Scrubbers
Figure 1.0 shows the Eciency / Particle size relationship o above mentioned line o equipment.
Figure 1.0
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Jet bag Filter under construction
3
Jet bag Filters
Design o Jet bag Filters (Process Technical)
TEMA Process design or continuous Jet bag Filters
is based on the process data and local conditions
and can be oered Taylor-made suitable or theapplication.
Important criteria or the design are:
Gas volume in Nm/h
Chemical composition o the gases
Moisture content o the gases
Temperature o the gases
Dust in kg/h
Characteristics o the dust,like corrosive, abrasive etc.
Particle size range o the dust
Local emission standards
Explosion resistant (ATEX)
Hygienic design
On line or o line systems
Materials o construction
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Design o Jet bag Filters (Construction & Layout)
Based on process technical data the lter area is
determined and the construction o the Jet bag
Filter, suitable or the project, can be designed in
The lter top part can be designed based on ollowing variables:
Number o covers
Layout o the covers
The covers can be located on one side
or 2 sides o the air buer tanks
Under each cover there are 4 rows in width
and 8 16 lter bags in depth
Materials o construction can be selected
in accordance to the table o construction
materials (page nr. 8)
Jet bag Filter Top part ( partly open)
detail supported by special parametric sotware as
partly shown below:
Filter 3-3-16 Parameters
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Design o Jet bag Filters (Construction & Layout))
The bags are protected by standard wear
protection shields. ( see page 6)
The maximum number o covers on one side
o the buer tanks are 4 (maximum 4 covers
on each side!)
Top view o Filter top part without covers
Top part with covers
The top part is standard made o stainless steel
and is isolated.
The top part can be provided with double covers
(see construction detail on page 6).
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Design o Jet bag Filters (Construction & Layout)
Length o lter bags are availablerom 2000 mm 5000 mm
Bag support cages can be split in length in
several parts or one lter bag with easy
connection to reduce space or replacement
o the lter material (see page nr. 8)
The textile bags can be supplied in dierent
qualities according to table gure 2.0 (page nr. 7)
The lter housing is designed in several modules
Inside view top-part o Bag Filter, bags,
support cages & wear protection shields
Wear protection
o Filter Bags
Double cover, isolated
The dust is collected in a tapered chute withan integrated spiral screw or dust discharge
The location o the screw discharge also can
be chosen to meet local dust collection
or transport
The 3D design drawing is the base or laser
cutting- and production drawings
An enormous number o construction variations
are possible considering the variables in number
o covers, number o bags in the length rows
and lter bags length
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Design o Jet bag Filters (Filter bags)
Bottom view rom Filter bags
Filter bag or most demanding solutions like: High temperatures
Micro dust particles
Fiber
Recomendedcontinuousoperation
Temperature(Dry Heat)
WaterVapor
SaturedCondition
(Moist Heat)
Max.(short time)Operation
TemperatureDry heat
SupportsCombustion
RESISTANCE TO
AlkalinesMineralAcids
OrganicAcids
OxidizingAgents
OrganicSolvents
PP94 C
200 F94 C
200 F107 C225 F Yes 5 5 5 3 5
PES132 C270 F
94 C200 F
150 C300 F
Yes 2 2 2 3 3
PAN125 C260 F
125 C260 F
150 C300 F
Yes 2 4 5 3 4
ARAMIDNOMEX
204 C400 F
177 C350 F
240 C465 F
No 3 2 2 1 4
PTFE260 C500 F
260 C500 F
290 C550 F
No 5 5 5 5 5
PPS190 C375 F
190 C375 F
232 C450 F
No 5 5 5 2 5
POLYIMIDEP84
260 C500 F
195 c383 F
300 C580 F
No 2 4 4 4 5
FIBER GLASS260 C500 F
260 C500 F
290 C550 F
No 2 4 4 5 4
Legend: 1 - Poor; 2 - Fair; 3 - Good; 4 - Very Good; 5 - Excelent
NOMEX is registed Trademark o E.I. DU PONT DE NEMOURS
P84 is registered Trademark o LENZING A.G.Figure 2.0
Chemical unriendly environment
Electrostatic dust particles
Properties o Textile Fibers or Dry Filtration
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Design o Jet bag Filters (Details o construction)
Support cage in flter bagHow to install a flter bag
Top o support cage1/1 steel wire
support cage
steel wire
support cage
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Design o Jet bag Filters (Details o construction)
Duplex steel
Stainless steel AISI 304(L),
316(L), 904L, 254 SMO
Titanium
Dust discharge spiral screw
Assembly o Filter Top part
Mild steel
Heat resistant steel 16Mo 3
Heat resistant stainless steel
153 MA, AISI 321, 1.4878
Materials o construction
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Cyclones
A Cyclone is a relative simple device that uses
centriugal orce to separate larger particles rom
air streams.
It is a high capacity / high eciency separator ( gure
3.0) that also can be used in combination with fuidbed Dryers / Coolers, Jet bag Filters, Packed Tower
Scrubbers and other process equipment.
Diameters rom 400 to 2000 mm.
Materials of construction
Mild steel
Heat resistant steel 16Mo 3
Heat resistant stainless steel
153 MA, AISI 321, 1.4878
Duplex steel
Stainless steel AISI 304(L),
316(L), 904L, 254 SMO
Titanium
Wear resistant design
Figure 3.0
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High capacity
Cyclones
High efciency
Cyclones
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Venturi Scrubber
Venturi scrubbers are used to remove particulate
matter rom a gas stream. A Venturi Scrubber
consist o a contact section called a venturi section
in combination with a droplet separator section.
Exhaust gas with dust is ed into the venturi sectionwhere it passes through a water mist at the venturi
throat at high velocity. This results in thorough
mixing o water droplets and dust particles which
agglomerate to orm larger particles which are
subsequently removed rom the gas in the separator
section.
The water supply units and spraying systems allow
recirculation o water with high dust contents. These
systems are used or cleaning particulate matter
rom exhaust gas with stringent emission level,
soluble dust mainly in the mineral and chemical
industry.
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Packed Tower Scrubber
Packed tower scrubbers are used to remove
particulate and / or vapor contaminants rom an
exhaust gas stream by way o dilution or absorption.
A packed tower is an ecient method o carrying
out mass transer between gas and liquid phases.Packed tower scrubbers incorporate packing media
to acilitate intimate contact between a scrubbing
liquid and gas to be scrubbed.
Applications are: reduction o dust or gaseous
emission levels, product recovery, air pollution and
odor control.
In countercurrent scrubber operation, the gas
fows upward through the packing material, while
the liquid fows downward by gravity through the
packing material. The liquid wets the suraces o the
packing material, providing a large amount o surace
area or diusion o one or more components o the
gas stream into the liquid stream, thereby cleaning
the gas.
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Adsorption o acidic gases and organic compounds
occurs in the reaction ducting and in the dust cake
on the abric lter bags.
The unused and recycled adsorbent (Ca(OH)2),
sodium bicarbonate, activated carbon) are injectedinto a reacting duct and then dispersed over the
complete lter area.
The nal emission levels on HF, HCL, SOx and organics
is depending on the used adsorbent, stoichiometric
value and operating temperatures.
For smaller systems the adsorbent is premilled
and supplied in Big-Bags on larger systems on site
milling and silo-storage can be used.
Dry Gas Scrubbing
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Double Jet bag Filter
Fluid bed Deduster
Special Applications
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Process B.V.
Europaweg 5b8181 BG Heerde The Netherlands
postal address
P.O. Box 19
8180 AA Heerde The Netherlands W B 9 0 6 / 0 5 . 2 0 1 2
T +31 (0) 57 857 86 50F +31 (0) 57 857 86 69
www.temaprocess.com