25 zigzag technology brick-kilns to become functional by Oct end

All Pakistan Brick-Kilns Association (APBKA) President Shoaib Khan Niazi Sunday said that 25 model zigzag firing brick-kiln (ZFBK) will start working across the province by the end of October, 2018.
Talking to APP, he said that model brick-kilns were being launched
at Raja Jang (Kasur), Morr Khunda (Nankana Sahib), Rawalpindi, Khanewal, Hafizabad, Gujranwala, Islamabad and many other areas of the province.
Niazi said that due to lack of technical expertise, the association was still far behind in the use of new technology.
He said in China, India, Nepal, Bangladesh and some other countries, the zigzag technology was being used successfully.
He said that zigzag technology kilns were being adopted rapidly across Asia, as the running cost of these kilns are very low.
Punjab Environment Protection Department Deputy Director Misbahul Haq Khan Lodhi said that so far the department had issued warnings to
91 brick-kiln owners in Lahore district for using conventional method at brick-kilns.
He said that owners of these brick-kilns had been directed to close their business by Oct 20, 2018; otherwise, strict action against them would be launched.
“To upgrade the knowledge of brick-kiln owners and workers, a plan to establish the Technology Transfer Institute was under way which will help introduce environment-friendly and feasible technologies to them,” he added.
To a question, Lodhi said that all conventional brick-kilns in the province had been directed to stop working by Oct 20 as smog season was likely to start from the same date.
Noted environmental researcher Mehmood Khalid Qamar told APP that in modern kilns, bricks are arranged to allow hot air to travel in a zig-zag path, adding the length of such air path is about three times that of a straight line. “This path/gap improves the heat transfer to the bricks, making the entire operation more efficient,” he said.
Moreover, better mixing of air and fuel allows complete combustion, reducing coal consumption by about 20 per cent.
To a question, Qamar said that in modern kilns, the zigzag design ensures uniform distribution of heat, increasing the share of class-I bricks to by about 90 per cent, adding that the design also reduces emissions considerably.
Global warming throughout the world is being caused by emission of greenhouse gases, as these are the major constituent, playing a vital role in creating global warming.—APP

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