Combustion catalyst for low-heat value coal
A combustion catalyst and catalyst technology, applied in the fuel, solid fuel, petroleum industry and other directions, can solve the problems of difficult to promote the combustion process of mixed coal, low decomposition temperature of strong oxidants, unstable combustion process, etc., and achieve pollution reduction and consumption reduction. Significantly, improve fuel cleanliness, reduce pollution and land occupation
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Embodiment 1
[0032] In weight percentage, the Ca 3 co 4 o 9 70%, Fe 3 o 4 25%, K 2 05% is ground and mixed, crossed a 100 mesh sieve to make the main active ingredient, and then gets the aforementioned prepared main active ingredient 80% and sodium humate 20% and grinds and mixes it, crosses a 100 mesh sieve to obtain the catalyst.
[0033] The low-value raw coal from Suntuan Coal Mine of Huainan Mining Group was naturally air-dried, ground, and passed through a 100-mesh sieve. Take 10g of coal sample, add 0.1g of catalyst powder according to 1% of the coal amount, grind and mix. The mixture sample was placed in a corundum crucible, and thermogravimetric analysis was carried out in an air atmosphere on a synchronous thermal analyzer (NETZSCH STA409PC). The results are compared in figure 1 .
[0034] Depend on figure 1 It can be seen that the upper line is the combustion curve of low-value raw coal, and the lower line is the combustion curve after adding the catalyst of the present ...
Embodiment 2
[0036] In weight percentage, the Ca 3 co 4 o 9 80%, Fe 3 o 4 15%, CeO 2 5% was ground and mixed, passed through a 100-mesh sieve to make the main active ingredient, and then 70% of the previously prepared main active ingredient was ground and mixed with 30% potassium fulvic acid, and passed through a 100-mesh sieve to obtain the catalyst.
[0037]The washed medium coal, coal slime and coal gangue from a coal washing and preparation plant of Huainan Mining Group were naturally air-dried, ground, and passed through a 100-mesh sieve. According to the weight ratio, the washed medium coal, coal slime and coal gangue were mixed in a ratio of 4:3:3 respectively, and the mixed coal samples were obtained by using the heap cone quartering method. Take 10g of coal sample, add 0.2g of catalyst powder according to 2% of the coal amount, grind and mix. The mixture sample was placed in a corundum crucible, and thermogravimetric analysis was carried out in an air atmosphere on a synchro...
Embodiment 3
[0040] In weight percentage, the Ca 3 co 4 o 9 60%, CeO 2 20%, K 2 O20%, grind and mix, and pass through a 100-mesh sieve to obtain a catalyst.
[0041] Sun Tuan low-value raw coal from Huainan Mining Group was naturally air-dried, ground, and passed through a 100-mesh sieve. Take 10g of coal sample, add 0.15g of catalyst powder according to 1.5% of coal amount, grind and mix. Take the mixture sample and place it in a corundum crucible, conduct thermogravimetric analysis in an air atmosphere on a synchronous thermal analyzer (NETZSCH STA409PC), and conduct a cartridge analysis on an automatic calorimeter (ZDHW-6) according to the national standard GB / T213-2003 method. Calorific value measurement. The results showed that after adding the catalyst, the light-off temperature of low-value raw coal decreased by 12°C, and the low-value calorific value increased by 3.4%.
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