现有各种燃料的比热值

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1、煤的燃烧值和煤气的燃烧值各是多少?有多少大卡?热量是多少?哪个热量大?煤=3×107J/kg煤气的燃烧值是4.2×107J/Kg,1焦=0.024卡路里标准煤：7000大卡/kg＝7000*4.18＝29260kJ/kg＝29.26MJ/kg焦炉煤气：4000大卡/m3左右，煤气密度0.54kg/标准m3所以，4000大卡/标准m3/(0.54kg/标准m3)≈7400大卡/kg显然，煤气的热值较高。各种燃料热值燃料名称        热值MJ/kg                  折算率固体燃料焦炭 

2、          25.12-29.308               0.857-1.000无烟煤          25.12-32.65               0.857-1.114烟煤             20.93-33.50               0.714-1.143褐煤            8.38-16.76                 0.286-0.572泥煤           10.87-12.57                0.371-0.429石煤

3、             4.19-8.38                 0.143-0.286标准煤           29.26                            1.000液体燃料原油             41.03-45.22                 1.400-1.543重油           39.36-41.03                 1.343-1.400柴油                 46.04                   

4、        1.571煤油                43.11                            1.471汽油                43.11                           1.471沥青                37.69                           1.286焦油                29.31-37.69            1.000-1.286燃料名称               热值MJ/

5、m3                    折算率气体燃料天然气                    36.22                          1.236油田伴生气             45.46                          1.551矿井气                   18.85                          0.643焦炉煤气                18.26                          0.62

6、3直立炉煤气            16.15                           0.551油煤气（热裂）     42.17                          1.439油煤气（催裂）    18.85-27.23              0.643-0.929发生炉煤气           5.01-6.07                   0.171-0.207水煤气                  10.05-10.87               0.3

7、43-0.371两段炉水煤气         11.72-12.57              0.400-0.429混合煤气                13.39-15.06              0.457-0.514高炉煤气               3.52-4.19                  0.120-0.143转炉煤气               8.38-8.79                  0.286-0.300沼气                        

8、18.85                           0.643液化石油气（气态）87.92-100.50          3.000-3.429液化石油气（液态）45.22-50.23MJ/kg    1.543-1.714电能                          3.6MJ/度                     0.1229燃烧值定义：完全燃烧1千克的某种燃料完全燃烧放出的热量，叫做这种燃料