• Perform oversight of work orders and checking to specialized dust collector general maintenance company regarding inspection, diagnosis, repair and maintenance work
• Host will give responsibility through the evaluation of maintenance quality for the maintenance progress

• Dust Collectors targeting Work Type (Bag Filter Precipitator and Electrostatic Precipitator)
  ※ Dust collector for work: Dust Collector operating in conjunction with the production facility
• Inspect and Diagnose from dust hood to the body, and even to stack of the dust collector, BAG replacement, operating replacement and repair of equipment and electrical maintenance work

• Identify dust collector maintenance comprehensive department of the client company
  – system, maintenance and schedule maintenance system and more
• Analysis of equipment specification, equipment quality
  – Quantity of maintenance of each plant and overhaul plan
  – personnel and material supply and more
• Analysis of dust collector maintenance system and problem
  – Process analysis for customized maintenance operation

• Establishment of internal maintenance support system to promote dust collector cooperation
  – Securing maintenance and management organization and required personnel
  – Securing of the work place and place, equipment, and introduction equipment such as environment measuring measurement equipment
• Introduction of dust collector registration history and specification registration
  – Problem analysis per dust collector and establishment of improvement methods
• Establishment of dust collector management standards and work item standardization
  – Introduction of standard system and establishment of contractor material supply plan

• Duct/Hood corrosion, abrasion reinforcement, and partial parts replacement
• Chamber, Top Door Leak area repair and body reinforcement
• Collection device parts repair and replacement
• Overhaul and replacement of transfer device(Chain type) component
• Overhaul and replacement of after-treatment devices such as Silo and Pug Mill
• MAiN FAN, Motor Overhaul and parts replacement
• Unit Device specific operation parts refueling, re-feeding (in case of change or shortage)
• Overhaul and replacement for safety facilities maintenance
• Overhaul and replacement of electrical equipment after Local Control Panel

※ Maintenance and repair work carried our for normalization of dust collector performance

• Duct/Hood corrosion, abrasion, and scattering dust Suction status check
• Chamber, Top Door Leak and body corrosion, wear check
• Filter Bag damage check (plant dormant state)
• Check for normal operation of Collection device (Valve Accessories, Utility supply lines, Blow Tube) and a pressure gauge inspection
• Dispensing apparatus (Double Damper, Rotary v/v) operation status check
• Conveying device (S/C, F/C, B/E) of the operation status check
• Check the operation condition of after treatment devices and Pug Mill
• Check the status of vibration reasons of Main Fan, Motor, joints, heat using measuring equipment
• Check the status of refueling, feeding of device-specific operating unit
• Check for corrosion and wear of safety facilities
• Check the electrical devices after the Local Control Panel using measuring device

※ When performance analysis and problem detected according to the dust collector air flow measurement, suggest improvement suggestion

• Status check for damage to the Filter and contamination → Determine the cause of the visible dust of flue
• Filter replacement coping according to dust collecting performance analysis → Check the differential pressure and flow rate based on the measurement results , Filter Replacement need point according to unexpected situation
• Designated place and treatment of collected Filter

※  Selection and application of appropriate Filter according to procession characteristics

• There were a lot of dusts so I had to wear a mask. But as you can see now, it has improved so much I can go into the field without a mask.
• When it was operating under the maintenance department, we weren’t able to properly maintain the equipment so we couldn’t operate the dust collector equipment due to budget problems. Even during the operation, the maintenance was so poor the dust collection were degraded but it has improved so much I can’t express with words.

• Before professional maintenance, the dust collector equipment personnel used to commission the repair work after inspection but the actual maintenance or improvements were not all there. After switching to AERIX, a professional comes and maintains and repairs without any trouble so it was really good.Even a simple problem gets solved immediately so I believe the conversion to a professional maintenance company was a good move.

• You can say that the staff was reduced by half after conducting the maintenance. Previously, the inspector had to check daily and request and check, making a harsh workload. After the professional maintenance, we just check the abnormalities and when there is a problem, just by a phone call, AERIX maintains with a discussion and even present improvement methods.

• Improved dust collection efficiency by increasing air flow
  – Switches excess air flow from idle facilities to major dust generating area
  – Minimize the loss of air by sealing the access door in the main body of the dust collector
  – Collecting efficiency improvement(auto damper for back wash improvement)
• Optimization of airflow distribution by conduct type
  – Adhere damper normalization and opening rate adjustment
• Heat duct reinforcement and blockage point improvements
  – Duct heat area reinforcement and new establishment
  – Chronic blockage relieved due to Chute improvement

• B/C Skirt sealed to prevent dust leakage
• Lower B/C falling light reduction to reduce dust generation
• Entire Heat duct replacement and structure improvement

• Indoor workplace dust concentrations : 202㎍/㎥ → 123㎍/㎥
• Chimney emission concentration : 2.4㎎/㎥ → 2.3㎎/㎥
• Collecting Airflow : 1,900㎥/min → 2,400㎥/min

• Surrounding building contamination due to color induced fine dust emission
• Differential pressure occurs by stack downstream cleaning device installment
  – Poor collecting air flow: 6,000 → 4500㎥/min

• Chamber specific air flow distribution equalization by damper track adjustment
• Discharge electrode, collector plate cleaning and location alignment

  Dust collector power deviation 88% reduction: 2.82 → 0.4㎾

• Collection efficiency improvement
  – Discharge electrodes Type change for even charge generation within the collector plate
  : Plate → Wire Type (Applied power 107% increase)
  – Lower body Separator installed after removal of existing Demister
  : 33% increase in airflow by minimizing pressure loss (4,500 → 6,000㎥/min)
  – Increased pole collecting efficiency due to increase spray angle through nozzle change
  : Full Cone → Spiral Jet (120 → 170°)
  – Uniform distribution of airflow in the main body due to distribution plate structural changes

  Improved collection efficiency of 85% (20 → 3㎎/㎥)

• Atmospheric dispersion of dust emissions improvement
  – Increased atmospheric dispersion due to chimney height increases and structural changes
  : Chimney height 20 → 30m, Stack Top cross-sectional area 6.7 → 4.5㎡

• Pollution rate of the building and the surrounding 90% abatement