by Engr. Kh. Mashiur Rahman | Apr 11, 2019 | Dyeing & Dryer
Air Tray Dryer Unit
Air tray dryer unit: should be able to investigate convection drying of solids on 4 corrosion resistant plates in a drying channel by air flow velocity via adjustable fan speed. It should have air heating with controlled heaters as well as sensors for measurement of humidity and temperature of solid samples before & after the completion of drying process. It should also be provided with digital weighing balance for measuring the overall change of weight during drying process. This unit should preferably be supplied with following specifications
Air Tray Dryer Unit specifications:
- Drying channel length: 2340mm (with fan), internal dimensions= 350x350mm
- Fan power: less than 100W, Max. output= 700m3/h, max. speed >900
- Heater power: 6000W (with adjustable temperature limiter)
- Balance measuring range: 0 to 10000g, resolution= 0.1g,
- Measuring ranges: Air humidity: 2 to 98% R.F., temperature= 0 to 100°C, flow velocity= 0 to 7Sm/c
Social Standard Evaluation for Factory
- The factory has at least two exit & stairways for safe evacuation of the workers in case of emergency.
- The staircases are at least 45 inches in width and allow a direct evacuation towards the outside of the factory building.
- Does the factory have adequate number of fire extinguishers at each factory floor?
- Are all fire extinguishers inspected and tested regularly and ready to use at all times?
- Are fire alarm bells installed and audible from each corner of the factory?
- Are fire drill conducted regularly and document those records?
- Are workers trained on fire fighting and the use of fire fighting equipments?
- Is fire fighting equipments adequate in numbers and maintained properly?
- Is any fire exit and escape route blocked or locked?
- Are exits and fire exits identified with signs or indicator lamps?
- Are the aisles properly marked with visible colors?
- Are the aisles reasonably wide for easy movement of employees and goods?
- Are adequate emergency lights installed at each factory floor?
- Is appropriate personal protective equipment (PPE) such as goggles,
- Are adequate numbers of fully equipped first aid boxes provided in the production floors?
- Are the workers trained on first aid?
- Is there a qualified Nurse appointed by the factory?
- Is potable water accessible and adequate at each factory floor?
- Water Pump Check List
- Are toilets private and segregated for men and women?
- Are evacuation plans posted in local language and clearly to be seen?
- Are there any loose or broken electric cables or installation in the factory?
- Does the factory arrange health and safety training for new and existing workers?
- Is there a proper dining space for the workers and adequately furnished?
- Is there a child care facility in the factory?
- Is there a treatment/doctor room?
- End of Tray Dryer
by Engr. Kh. Mashiur Rahman | Apr 11, 2019 | IT Affiliate CPA
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by Engr. Kh. Mashiur Rahman | Apr 10, 2019 | Power & Energy
Gas Diffusion Apparatus Unit
Gas diffusion apparatus unit: should have ability to separate CO2/air mixture by absorption in counter flow with water. Production of gas mixture should be possible by using CO2 from compressed gas cylinder and ambient air. Adjustment of mixing ratio should also be possible by using valves compressor for delivering the gas mixture into the absorption column. Continuous solvent regeneration in circuit with desorption column under vacuum. Water temperature control with heater and refrigeration system. sss
More
We have
significantly increased the production capacity by commissioning the new set of
fully Auto corrugated board making machine and Semi Auto corrugated board
making machine. In addition to this we have added two color Offset printing
machinery in our offset printing section. Also turning the offset printing
Floor Air condition to meet buyer’s demand. Further, to meet the quality
product we will have to commission high capacity Boiler.
In order
to meet the growth of production and extension of the project we immediate need
the bigger capacity of Power Gas Generator Unit. This is why we are interested
to improve the 900KW/1125 KVA Gas Generator.
Gas Diffusion Apparatus Unit Specification
- Absorption column height: 2x 750mm, internal diameter= 80mm,
- Desorption column height: 750mm, internal diameter- 80mm
- Pumps (absorption/desorptionl: max. Flow rate= 17Lit/min (02 No.)
- Pump (coolingl: max. Flow rate: 29Lit/min (01 No.)
- Compressor: max. Positive pressure= ibar, max. flow rate= 4m3/h
- Measuring ranges: Air flow rates= 0.4 to 40 Lit/min, Solvent= 40 to 430Lit/hr, CO2= 0.5 to 6 Lit/min, temperature= 0 to 80°C, pressure= 0 to 2.5bar of Gas diffusion apparatus
by Engr. Kh. Mashiur Rahman | Apr 10, 2019 | Boiler
Rising and falling Wiped film evaporator
Wiped Film Evaporator : It should preferably have these specifications. Shell dia. (0.D.)=2.5-3.5inch (SS), Nc. of tubes =2 mild steel (Copper), Outside dia. of each tube= 0.5inch, Effective length= 70inch, Heat transfer area=1.5ft2. Top pipe dia. for vapor = 1 inch, Height of calendria = 6 inch, Tapered 3inch top flash tank: D= 6inch, L=12 inch, Top plate = 9 inch dia. You can read Pe Film Blown Machine
Rising and falling wiped film evaporator Specification
- Temperature indicators: Thermocouples K-Type with individual no. of 03 display units for both top plate and Still (03 No.)
- Rotameter: Flow rate max. =20 lit/hr, dia.= 2inch, L=10 inch
- Temperature indicators: Thermocouples K-Type with individual no. of 08 display units (08 No.) as: T1=Feed inlet temperature (Pre-heater), T2=Feed outlet temperature (Pre-heater), T3=Steam chest temperature, T4=Flash tank temperature, Ts=Product condensate inlet condenser, T6=Product outlet condenser, 7,=Cooling water inlet condenser, T8= Free
- Feed Tank Dimensions: L= 12inch, W= 12inch, H= 17inch
- Frame Dimensions: Length = 51inch, Width = 27 inch, H = 30 inch
- Electrical Panel: W= 16inch, L =19.5inch, H= 16inch. (01 No.)
- Auxiliaries: Steam pressure gauge, Condenser (shell and tube heat exchanger), Feed pre-heater (shell & tube heat exchanger).
FALLING OBJECTS
Objects of different sizes, shapes and weights often fall
from height on the construction site. Recently on the project a lot of incident
involving materials falling from height has been recorded, we must steop
materials from falling.
The major case of falling objects from height is poor
housekeeping and material arrangement. If materials are not properly arranged,
secured and kept in the work platforms, there will be continuous incident on
falling objects.
Housekeeping – It means cleaning of the work area to remove
materials that are not needed and keeping the ones needed in an orderly manner.
Materials not properly kept can drop, it can also be kicked
off, pushed, rolled or slipped off. Remember, all these are caused by human
mistakes.
- Prevention Of Falling Objects
- Practice good house keeping (clean your work area daily)
- Arrange and secure all material properly at height
- Do not over load platform with materials
- Secure all pipes, beams and other materials to prevent them from rolling off
- During lifting, be sure that the lifting materials will be able to carry the load you intend to lift without dropping the load from height.
- Ensure the load is properly hooked, tie the tag line on the load and not on the web sling, control load well, do not allow it to swing and contact other structures/materials
- Do not leave nuts, bolts and other off cuts of material on platforms and beams
- Put all nuts, bolts and other small pieces into buckets, bags or containers
- Tie down tools at height (ratchet, hammer etc) a lot of workers still work at height with tools that can fall without tying them
- Do not carry items in your pocket or hand while climbing ladders
- Do not remove toe board from platforms (they are designed to protect materials from falling).
- Do not stack too many materials at height or at the edge of platforms (scaffold pipe, pipe supports etc).
- If possible don’t use rope to lift material that can be carried by hand Wiped Film Evaporator
by Engr. Kh. Mashiur Rahman | Apr 10, 2019 | Dyeing & Dryer
Analytical sieve shaker
Sieve Shaker -Should have a set of sieves and a controllable electromagnetic drive with preferably following features. This unit should be suitable for both dry and wet sieving as well as for a variety of materials applications, separation, fractioning, particle size determination including cement/clinker construction materials, chemicals, coffee, fertilizers, fillers, flours, grains, metals powders, minerals, nuts, plastics, sand, seeds, soils, slurries and suspensions etc. To conduct its business in an environmentally responsible manner. We sale E Procurement System Software sss
Compliance
In implementing the policy, we will:
- Ensure compliance with relevant
environmental legislation and regulations.
- Incorporate environmental
consideration into our practices with regard to the use of natural resources,
energy consumption and waste disposal.
- Seek to ensure environmental
awareness and responsibility on the part of our staff, our suppliers and
partners in the implementation of projects, in facilities, management and
operation.
- Remain committed to prevent pollution. We will encourage recycling of waste materials and discourage the use of environmentally unfriendly products.
- We will continuously monitor and improve our environmental performances.
Analytical sieve shaker Specification
- Measuring range: Particle size= 20 pm to 25 mm
- Sieving motion: throwing motion with angular momentum
- Min. Batch] feed capacity: 3 kg
- Analytical sieve shaker Min. Number of fractions: 9/17
- Time display: digital, 1-99 min
- Interval operation: 10 sec
- Suitable sieve diameters: 100mm/150mm/200mm/203mm (8″)
- Max. Height of sieve stack: 450mm