煤的地下气化的思想是门捷列夫在百余年前提出来的。在他提出这个创见以后，俄、美、日、英、法等国竞相投入研究。但他们得到的地下煤气热值只有鼓人纯氧等气体时，每立方米才能达到2000多千卡，既投入高，又影响应用。热值低是传统地下气化工艺的难点。煤炭地下气化具有很好? The idea of ​​underground coal gasification was proposed by Mendeleev more than a hundred years ago. After he proposed this initiative, Russia, the United States, Japan, Britain, France and other countries competed for research. However, when the caloric value of the underground gas they got was only a gas such as pure oxygen, they could reach more than 2,000 kcal per cubic meter, which would not only affect the investment but also affect the application. The low calorific value is the difficulty of the traditional underground gasification process. Underground coal gasification is very good?