Wagon tippler De-dusting Case
Introduction:
We provided bag filters for wagon tippler venting application in February 2017 for 2 plants of a renowned Cement company vis-à-vis Krishnapatanam, Andhra Pradesh & Patas, Maharashtra.
For effective containment of dust, it is essential to identify dust-generating sources and then contain the dust spread from the source by providing an extraction system. The effectiveness of dust extraction system basically depends upon proper design of hoods and ducting taking plant layout into consideration. So aspects like proper bag fixing arrangement, cages, leak-proof casing and roof play a vital role.
Data/ Table:
Table 1: Technical Data (Design and Bag Material)
| S.NO | DESCRIPTION | UNIT | PARAMETERS |
| Design Data: | |||
| 1 | Type of Filter | – | Pulse Jet |
| 3 | Duty (Continuous/Interval) | – | Continuous |
| 4 | Filter cleaning media | – | Compressed Air |
| 5 | Filter cleaning mode (online/ offline) | – | Online |
| 6 | Dust handled | – | Clinker / Gypsum |
| 7 | Gas Inlet Location | – | @ Inlet Plenum Entry |
| 8 | Inlet Dust Load | gm/m3 | 100 (client to confirm) |
| 9 | Outlet Dust Emission | mg/Nm3 | < 30 |
| 10 | Bag filter Inlet Volume | m3/Hr | 200000 |
| 11 | Inlet Pressure of Bag Filter | mmWC | -120 |
| 12 | Operating Temperature of Bag Filter | o C | < 100 |
| 13 | Casing design temperature | o C | 200 |
| 14 | Casing design pressure | Mm WC | (+/-) 500 |
| 15 | Air to Cloth ratio | m3/min/m2 | 1.2 |
| 16 | Pressure drop across bag filter | mm WC | 150 |
| Bag Material: | |||
| 1 | Filter media | Polyester Needle felt | |
| 2 | Treatment | Oil & water repellent | |
| 3 | Type of Bag fixing | With Snap Band Cuff | |
| 4 | Bag Diameter | mm | 150 |
| 5 | Bag length | mm | 6000 |
| 6 | Bag weight | gm/m2 | 550 |
| 7 | Max temperature withstanding- Continuous | o C | 130 |
| 8 | Max temperature withstanding- at peak for 15 min/day | o C | 140 |
| 9 | Total No. of Bags | Nos. | 960 |
| 10 | Total filtration area | m2 | 2713 |
| 11 | Cloth area per bag | m2 | 2.83 |
Picture:
Figure 1: The wagon tippler application at the site
