Zero-emission energy-saving boilers from the hands of laid-off workers

Zhang Xuehua is a Fishery Technician at the former China Aquaculture Corporation's Yuxian Branch. He is responsible for greenhouse shrimp farming and is associated with boilers. He has a skillful repair technique. After being laid off in 1992, he worked on boiler repairs, descaling, renewal, renovations, etc., with repair techniques, and worked to repair boilers throughout the country. In 2007, Zhang Xuehua discovered during the process of repairing and reconstructing boilers that many civilian boilers used high energy and emitted heavy dust, which led to the idea of ​​improving traditional boilers. After more than two years of research and development, Zhang Xuehua finally designed the first generation of “steam-water dual-purpose boilers” that integrate heating and hot water supply. What is even more surprising is that this civilian boiler can produce hot water in 5 minutes, steam production in 15 minutes, the coal saving rate can reach 45%, and the smoke and dust emission can reach the national standard, changing the status of black smoke in the past.

In the development of the fourth-generation boiler, he discovered that the ordinary steel plate in the low temperature zone of the boiler suffered severe corrosion. When he was unable to find a solution, he found a solution from the book. He used a 4 mm galvanized steel plate to prevent solids and removed the road tiger. After preliminary tests, when the boiler was running, the flame temperature of the combustion chamber was as high as 1400°C, and the thermal efficiency was as high as 92%, which was 50% lower than that of the steam boiler. The boiler exhaust gas is only clean air, and there is no smoke and dust on the white paper.

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