流化床部分煤气化实验研究

在一台小型流化床部分煤气化气化炉上，以空气和水蒸气为气化剂，在不同操作条件下(给煤量、流化风量和蒸气量)，进行了三种不同煤种的气化实验。研究结果表明，床温随给煤量和蒸汽量的增加以及流化风量的减小而降低；在一定范围内。煤气中CO含量随给煤量、流化风量和蒸汽量的增加以及煤化程度的降低而升高；煤气中H2含量随给煤量和煤化程度的升高以及流化风量和蒸汽量的减小而降低；CH4含量随给煤量的增加而增加，随流化风量、蒸汽量和煤化程度的升高而降低。另外，煤化程度升高，生成煤气的热值减小。

Experimental Study of Coal Partial Gasification in a Fluidized Bed

On a small-sized coal partial-gasification test facility for a fluidized bed gasification tests of three kinds of coal were carried out under different operating conditions (namely, different coal feed rate, fluidized air flow rate and steam feed rate) with air and steam serving as gasifying agents. The results of the test show that the bed temperature decreases with an increase in coal feed rate and steam flow rate and also with a decrease in fluidized air flow rate. Within a certain range the CO content in gas will increase with an increase in coal feed rate, fluidized air flow rate and steam flow rate and also with a decrease in gasification degree. H_2 content in the gas will decrease with an increase in coal feed rate and gasification degree and also with a reduction in fluidized air flow rate and steam flow rate. CH_4 content will increase with an increase in coal feed rate, and will decrease with an increase in fluidized air flow rate, steam flow rate and gasification degree. Moreover, with a higher gasification degree the heating value of the generated gas will decrease.