The invention belongs to the technical field of preparing clean gas and chemical syngas.

本发明属于制备清洁燃气和化工合成气的技术领域。

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The absorber could be divide into three major parts as absorber reaction tank, absorber spray zone and clean gas zone.

三大主要部分：吸收塔反应箱、吸收塔喷淋区和除雾区。

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In the twenty years that the Clean Air Act has mandated unleaded gas use in the United States, the lead accumulation worldwide has decreased significantly.

在《清洁空气法案》强制要求美国使用无铅气体的二十年里，铅在世界范围内的累积量显著下降。

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He says his party also wants to explore and develop America's oil and gas resources, and promote nuclear power and so-called "clean coal."

VOA: standard.2009.05.23

Powering vehicles with clean natural gas is not new.

VOA: standard.2010.02.23

Thanks to the solar heater, a shower is a daily possibility, and the biogas digester -- which converts human and pig waste to a clean gas that can be pressurized -- has enabled cooking and lighting.

CNN: 'Green' revolution under way in rural China

Taking the place of coal will be clean-burning natural gas and clean, green solar and wind power.

FORBES: Coal Is History. Or Is It?

In addition to the economic benefits, it is also essential in providing America clean natural gas which fuels public transportation and helps reduce greenhouse gas emissions.

FORBES: EPA's Fracking Hysteria