Current Programmes > Air Pollution Control & Energy Conservation

2.1. BRICK KILNS

The designs offered are :

• For new kilns and for replacing movable chimneys.
• APCD for kilns with existing fixed chimneys.
• For kilns in water logged area.

For this, following two fold approach has been adopted

• Installation of gravity settling chamber as APCD.
• Creating awareness regarding better feeding, firing and operating practices to improve combustion of coal thereby reducing smoke levels.

Salient Features of Technology :

For New Energy Efficient Kilns

• No ID fan required.
• A well- designed chimney of 120 ft. height provides sufficient draft.
• Large sized side & central flues reduce the resistance to the flue gases  thus the kiln requires less draught for its functioning.
• Major stress on better masonry practices has helped reduce the losses considerably due to in-leakage of air in the chimney and kiln components . New design of kiln and pollution control measures not only gives better combustion and environment performance, but also saves on fuel.
• Incorporation of a modified flue system (in the form of shunt) has averted the danger of exposure of harmful hot gases to the labor while operating the damper.    
• Air pollution control measures in the form of gravity settling chamber are integrated at the base of the chimney itself.
• Saving of 8-10% towards coal consumption and reduction of emission levels at the source
• First proven and accepted technology in the country for control of particulate emissions from Bull’s Trench Kilns.
• Technology approved by CPCB and various SPCBs.
• Performance studies carried out by TERI, SDC, CPCB and  PPCB.
• S.P.M. levels: 187-369 mg/NM3

For kilns with existing fixed chimneys:

• Gravity settling chamber around the base of the chimney (to avoid any by-passes) has been demonstrated.
• Air handling capacity of the chimney has been increased by:

  • Increasing the chimney height to 120 ft but not <105 ft.
  • Increasing the cross-sectional area at the top of the chimney to 15–16 sq.ft.

Technology replicated in around 2500 kilns.

PSCST’s Resource Material on brick kilns

• Manual on “Better Feeding, Firing And Operating Practices In Bull’s Trench Kilns”.
• Film on “Brick Industry- Towards Better Environment” (In English & Hindi).
• Film on “Brick Industry- Bachat Ki Aur” (In Hindi).

Contact persons : Er. M.S.Jaggi, ms_jaggi@pscst.com
 

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