The efficiency of the ESP affected by coal category and the boiler's running condition is forecasted.

根据煤种以及锅炉燃烧和运行工况对电除尘器进行效率预测。

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Cause analysis of the water cooled wall tube burst focused on irrational points of design, excessive thermal loading, changes of coal category, burner defects and deposits in throttle valves.

着重从锅炉设计不合理、热负荷过高、煤种变化、燃烧器的缺陷及节流阀结垢等方面分析了水冷壁爆管的原因，指出必须进行锅炉改造。

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There are well-found category mineral resources in Antu county area, 50 kinds of minerals have been discovered, such as gold, coal, basalt, molybdenum, Iron, mineral water, terrestrial heat etc.

安图县矿产资源种类齐全，已发现矿产50余种，主要有黄金、煤炭、钼、铁、矿泉水、地热等。

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The proposal lumps gas turbines and coal boilers into the same source category, and it holds coal power plants to a CO2 performance standard that nearly all natural gas combined cycle plants and exactly zero commercial coal power plants can meet.

FORBES: EPA Nominee Gina McCarthy Has A History Of Misleading Congress

The rule for existing sources, now under development, would work like this: Because coal and gas are combined in a single category, the EPA would cap an average rate of, say, 1, 400 pounds of CO2 per megawatt-hour.

WSJ: Review & Outlook: Carbon Power Politics

The category includes petroleum, natural gas liquids, ethanol, biodiesel, coal-to-liquids and gas-to-liquids, and as you can see, the gap narrows between liquids and coal, but coal remains the second energy source to power the world.

FORBES: Big Demand-Supply Mismatch Argues For Higher Oil Prices