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我国褐煤资源相对比较丰富,已探明的储量就达1303亿吨,占全国煤炭储量的13%,其中内蒙古的褐煤储量最大,占全国褐煤储量的77%。在内蒙地区建设大型褐煤坑口电站,既充分利用了褐煤资源,避免了褐煤长途运输带来的安全问题,大大降低了褐煤的发电成本。褐煤具有水分大、热值低、易挥发的特点,因此褐煤锅炉一般采用中速磨煤机直吹式制粉系统和风扇磨煤机制粉系统。
Lignite resources in China is relatively rich, proven reserves reached 130.3 billion tons, accounting for 13% of the country’s coal reserves, of which the largest lignite reserves in Inner Mongolia, accounting for 77% of the national lignite reserves. The construction of a large lignite pithead power station in Inner Mongolia not only fully utilizes the resources of lignite, avoids the safety problems caused by the long distance transportation of lignite, and greatly reduces the power generation cost of lignite. Lignite has a large moisture, low calorific value, volatile characteristics, therefore, lignite boilers are generally used in medium-speed mill pulverized coal injection system and pulverized coal milling system.