AMIRRUL AMIR SLIDE PRESENTATION

Reverse Osmosis from Amir Lotfi

ZAFRI SLIDE PRESENTATION



Treatment Pond from zafri haiqal

AIMAN SLIDE PRESENTATION

Desalination from Aiman Farhan

HAKIMI SLIDE PRESENTATION

Filtration Process from Kimi Haizal

ADAM SLIDE PRESENTATION

Clarifier by Adam from Advmharith

PARTICULATE EMISSION CONTROL BY PULSE JET BAG FILTER

PARTICULATE EMISSION CONTROL BY PULSE JET BAG FILTER

 INTRODUCTION

The SOLTEQ Pulsed-Jet Bag Filter System (Model: AP 04) has been locally manufactured to a high standard with emphasis on ease of use and operational safety. It consists of a baghouse, a pulsed-jet cleaning system, a feed container with a valve, an air blower, an outlet dust filter and an air flow sensor. The unit has been custom designed by Malaysian engineers to introduce students of Chemical Engineering to dust pollution control using a fabric filter.

The bag house is divided into two sections: top and bottom sections. The top section is made of mild steel and connected to the compressed air tank that is part of the pulsed-jet cleaning mechanism. The bottom section is made of durable clear polycarbonate with dust collector in the form of removable drawer. Student can view through this bottom section the filtering and cleaning activities of the bag filter system. The cleaning mechanism consists of a compressed air tank, a solenoid valve with remote selectable timer and a portable air compressor. Four units of polyester fabric filters are installed in a row inside the bottom section of the baghouse.

An air blower installed at the outlet is capable of drawing 198m³/hr of air through the system. The air velocity is set by adjusting the speed of blower which is controlled by an inverter. A valve is installed below the feed container to control the amount of dust particles sample introduced into the air stream before being filtered inside the bag house.

A digital differential pressure indicator has been installed on the control panel for the purpose of measuring pressure drop (DP) across the bag house and venturi.

P&ID Diagram

 EXPERIMENTAL PROCEDURES

        GENERAL START-UP PROCEDURES

1.             Weigh 200g of Dust Sample.

2.             Clean up the chamber from any leftover.

3.             Secure all bolts to windows and the drawer for air tight operation.

4.             Switch on air compressor. Regulate outlet to 2 bar.

5.             Connect compressed air supply at 2 bar to compressed air buffer tank, TN1.

6.             Load the dust sample into feed vessel with the outlet closed and vibrator off.

7.             Now the equipment is ready for experiments.

Objective: To study the effect of varying total filtering area to the separation efficiency.

1.     Follow the general start-up procedures.

2.     Switch on the main panel. Switch on the blower and set the frequency to 30Hz using the air blower speed controller. (The frequency is monitored on the FUJI frequency inverter panel mounted beside the control panel)

3.     Switch on the Pulsed-Jet Solenoid Valve, SV1.

4.     Set the vibrator speed to 1, and then switch it on.

5.     Pour the dust into the feed vessel until 80% full, than put the lid on. Open the teed vessel outlet, CV1. After the vessel is almost empty, close the outlet, open the lid and pour more dust. This is to be repeated until all 200g of samples are loaded.

6.     Once all sample are finish loaded, let the system run for another 5 minutes to ensure all dust trapped in the piping are delivered into the baghouse.

7.     Then shut off the blower, while maintaining operation of pulsed jet solenoid valve for another 10 shots to ensure the bag(s) are cleaned properly.

8.     Clean up the walls and bag(s) with a suitable brush or broom using the cleaning windows located at both sides of the baghouse. Ensure the dusts are settled into the dust collector as much as possible.

9.     Pull out the dust collector, taking care that the dusts would not spill out.

10.  Carefully transfer the dusts into a pre-weighed container. Then measure the weight of the dusts.

11.  Calculate the efficiency, h

        x 100

12.  Repeat Step 1 until Step 11 with 2 filtering bag(s).

Table 2: Experimental Result for Experiment I

Number of Bags	Weight Loaded (g)	Weight Calculated (g)	Exp. Efficiency,h (%)
2
4

SAFETY PRECAUTION

1. Avoid using abrasive particle sample.
2. Clean the polyester filter bags with extra care to avoid damages to bags.
3. All bag connections should be checked to ensure clamps are tight
4. After experiment, the cleaning mechanism system should be kept in operation for a few minutes to ensure good removal of collected dust and avoid unnecessary pressure drop. Do not over clean the filter bag.
5. Preheating either the collector or incoming gas to avoid condensation of the fitter medium.
6. All cleaning mechanisms should be timed to see if working properly and in the right sequence.

MAINTENANCE

1. Inspect the inside of baghouse frequently.
2. Inspect the solenoids and pulsing valve regularly to ensure audible compressed air blast.
3. Check the compressed air system for any leakage in header or piping.