7、The article introduces the test method and the steps to determine the tar content in the coal gas of coke oven by UV spectrophotometer, and the analytical problems.
4、Article 18 the State shall lay down the tar content grading standards for cigarettes and cigars.
2、The present invention provides an additive capable of reducing tar content of cigarette and the cigarette containing this additive and low tar content.
1、This kind of tobacco has a high tar content.
3、Especially suitable for coal tar content high, good adaptability, gas production big bituminous coal.
6、Suction under the fixed bed gasifier with simple structure, easy to operate, the output gas low tar content advantages has been widely used.
5、The results showed that the urea malic acid treatment can significantly reduce the tar content in smoke smog by 16.9% based on the control treatment.
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