How to Select Dust Collectors                   Image Credit:  Nederman | Bionomic Industries | Nilfisk Industrial Vacuums   Dust collectors are used in many processes to either recover valuable granular solid or powder from process streams or to remove granular solid pollutants from exhaust gases and work environments.   Dust Collection Methods There are a number of different methods for...
Learn More about Dust Collectors


Q & A on Dust Collectors

We asked our users for their input on Dust Collectors. Here are the results of 553 users familiar with Dust Collectors.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice

Design TrendsTop

Q:
What new technologies are influencing dust collector design?
81 answers
Answers:

The factors influencing dust cake buildup and .... combination of new membrane technology and state-of-the-art felt substrates. ... Typical new equipment design efficiencies are between 99 and 99.9%. ... influencing dust resistivity and must be carefully considered in the collection efficiency

~Engineer, SC

Development of new fabric/ felt for bag manufacturing. Development of high temperature duct collector bags. Better surface area and air to cloth ratio in same size dust collectors. Improved air inlet and discharge etc. Improved cleaning technology i.e. efficient pulse jet tech.

~Narendra L, Project Manager, Bakersfield, CA

The new materials for frame and structure, especially the ones I use in oil rigs to prevent corrosion fire and smoke poisoning. New materials for ducts are also considered beside the design to avoid curves and long distances from air intake to air supply point..

~Paulo V, Engineering Consultant, Sao Jose dos Campos, Brazil
See More Answers
Q:
From your perspective, which companies are creating the most innovative dust collectors?
74 answers
Answers:
I would say the most innovative dust collector companies in terms of the container itself are the ones that do not have a vested interest in producing filters. When you combine the filter driven company with this, Donaldson seems to be the most progressive.
~Keenan W, Marketing/Sales, Greer, SC
Donaldson-Torit, Farr, Imperial Systems, Scientific Dust Collectors.
~James W, Marketing/Sales, Gaylord, MI

In my point of view, the leaders in innovative dust collectors in Europe are Mikropul Germany and Ultrafilter UK.

~Florian C, General Management, Targoviste, Romania
See More Answers

Applications and UseTop

Q:
What are some of the applications you have used a dust collector for?
139 answers
Answers:

In oil rigs, where space is a problem, I was hired to re-engineer and reconstruct air intakes of dust/brine/ash collectors because of the need of areas in some oil rigs of Petrobras, the Brazilian Oil Company. Also to re-engineer air intakes of diesel engines rooms in order to supply enough combustion air for stoichiometric mixture (AFR) needs. Same for fun coils in super shoppings positioned around sea shore and therefore maintenance caused by brine was a big problem. My efforts now is to eliminate dust confinement in the dust collectors by applying new coalescing air filters elements showing high spatial areas and stratification areas to reduce pressure loss and bacterial growth.

~Paulo V, Engineering Consultant, Sao Jose dos Campos, Brazil

I am work in American company and business based in cocoa processing. We are using some type of dust collector. We use dust collector for cleaning cocoa bean, separation of dust and cocoa powder. Now, I am designing dust collector for separation of wet dust and vapour on vacuum drying system.

~Wayan A, Project Manager, Makassar, Indonesia

Coal, Perilium Coke, Limestone, Cement Grinding application. Material Handling applications. Fine powder handling and metering application. Nuisance dust collector for transfer points. Process dust collectors for different applications.

~Narendra L, Project Manager, Bakersfield, CA
See More Answers
Q:
Please share with us any “non-standard” applications that a dust collector has been used for.
38 answers
Answers:
We have large dust collectors that are connected to individual workstations, where plastic models and molds are made. In addition to the removal of the dust, our dust collector is used to remove fumes and vapors from the various chemicals used at these workstations, such as resins, solvents and adhesives. We had to attach carbon filter systems to the air outflow ducts to prevent fumes from being distributed in the plant. Our dust collection systems are all interior units and do not discharge to the outside.
~Dennis C, Research & Development, Seattle/Tacoma, WA
I wouldn't say "non-standard" but new for me, used to see them on mining, cement and concrete industries. Find Dust Collectors in gelatin, chicken soup, iced tea and tobacco has been really good news to increase my business.
~William V, Engineer, Oakville, Canada

I saw collectors for mineral coal in steel mills which made me feel like working inside of an explosive weapon. Collectors for volatiles coming from cooking are also very common, but again too dangerous.

~Paulo V, Engineering Consultant, Sao Jose dos Campos, Brazil
See More Answers
Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of a dust collector?
49 answers
Answers:

Use of regular, reverse air dust collector as process dust collector for cement grinding unit. Higher moisture content made it really difficult to operate efficiently and there were several plugged bags. Also dedusting of hot air from clinker cooler. Due to very high temperature (red hot clinker particles being carried in gas stream) of particles in gas stream resulted in multiple bag failures.

~Narendra L, Project Manager, Bakersfield, CA

Yes. Use of an inefficient fan resulted in caked-on grain dust in the duct work of a Great Plains state's baghouse. When a highly efficient Industrial Air Technology Corp. impeller wheel was substituted and the fan was turned on, the caked-on dust was released & the baghouse had to be shut down for emergency clean-out!

~James W, Marketing/Sales, Gaylord, MI
Once used a vacuum pump of 300LPM capacity giving a vacuum of -27 inch hg for dust collector used in powder coating plant. The fine powder just went through and the heat inside the vacuum pump made a solid lump of the powder which was sucked into the pump, thereby rendering the pump useless.
~Adil B, manufacture vacuum related special purpose machines and also make air-operated pumps, Pune, India
See More Answers

FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
63 answers
Answers:

The main thing I would like to see improved would be for the system to be quieter during operation; not from the standpoint of the mechanical portion, but at the workstations where the air (&dust) is removed. The greater the suction, the noisier it is.

~Dennis C, Research & Development, Seattle/Tacoma, WA

Easier access to filters, better spark traps, better use of energy on motors, lower static pressure inside the units, longer filter life, fewer chances of fires, better compliance with explosion vents

~Jeff H, Production Engineer, Wymore, NE

Ease of installation and maintenance. Since I install and maintain most every brand, I find that there are a few that do not think about the extended maintenance that is required for repairs.

~Scott (CETECH) P, Environmental project design, Garland, TX
See More Answers
Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of a dust collector?
53 answers
Answers:
Take account of any off-line time and this includes cleaning cycles. Also consider what happens to the overall process if the dust collection system is off-line, i.e. would the whole process be affected and to what degree?
~M H, Engineering Consultant, Johannesburg, RSA
Most errors are with the ducting system leading to the collector, with insufficient velocities to keep dust in suspension, or with velocities which cause the static pressure design levels to be exceeded.
~Gregory B, Engineer, Golden, CO
Specify accurately the operating conditions, especially variable flow conditions and particle size distribution, and acid components in the gaseous stream. For dry systems, stay well above the dew point.
~Romualdo Salcedo, CTO, Professor, Porto, Portugal
See More Answers

Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using dust collectors?
56 answers
Answers:
1- Filter media should be properly selected in accordance with the type of dust and operating conditions. 2- Filteration velocity (Air to cloth ratio-ACR) is the most important criteria. If it is too less, area of filter elements and the overall cost of equipment will be high and hence efficiency will be very good more and if ACR is too high, filter area and the equipment cost will be less, however efficiency comes down. Hence past reference of the supplier must be given due consideration in selection of optimum ACR to optimize the filter area and cost keeping in view the type of dust and operating conditions. 3- Mode of operation may be PLC or through a local control panel with signals directly connected with main plant PLC.
~MAYANK M, Engineering Consultant, New Delhi, INDIA
Make sure when initial design is put forward, that there is additional air designed in for future use. Too many times I've seen a dust collector system be added to with exhaust drops to the point that there is no velocity of to transport the contaminant to the collector.
~Scott (CETECH) P, Environmental project design, Garland, TX
If you are buying a bag house, be very careful with the high operational temperature said by the vendor. It is not true. Use at least 20 or 30 degrees C less. Also if the bag house receives hydrocarbon vapors, they will concentrate in the bags, during the time.
~Diego E, Engineering Consultant, SALVADOR/ BA, Brazil
See More Answers

Related eNewsletters
See More

Also on GlobalSpec...
  • Receive email updates on new products and suppliers of interest to you
  • Online, interactive conferences / trade shows featuring latest news and industry trends
  • CR4
    Q&A and discussion for the engineering, scientific, and technical community
  • Engineering and scientific news from hundreds of sources
  • Industrial manufacturers and distributors