PM2.5 emission reduction clean coal and preparation method thereof
A clean and briquette technology, applied in the petroleum industry, solid fuel, fuel, etc., can solve problems such as high emissions and environmental pollution, and achieve the effects of reducing emissions, improving combustion efficiency, and reducing pollutant emissions
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[0032] The PM 2.5 The preparation method of emission-reducing clean briquette, such as figure 1 shown, including the following steps:
[0033] (1) Use crushing equipment to crush the lumpy raw coal, screen the resulting crushed products, take the coal powder under the screen as the raw material for coal molding, and the coal powder on the screen is screened again until it is sieved; massive red mud Additives are crushed and screened in the same way;
[0034] (2) Adding a briquette binder to the coal powder and red mud powder obtained in the above step (1), and then using a mixer to fully stir the three powders evenly, and the obtained mixed powder is used as a raw material for making clean briquettes;
[0035] (3) Add water accounting for 15%-25% of the mass of the mixed powder to the mixed powder in the above (2), and stir again with a mixer until the obtained mixed raw material has a uniform color and no obvious water seepage;
[0036] (4) Get the mixed raw material obtai...
Embodiment 1
[0039] PM of the present invention 2.5 The emission-reducing clean briquette, in terms of mass percentage, includes 95% coal powder, 2.5% cassava starch as a briquette binder, and 2.5% red mud as an additive, wherein the additive red is waste residue from electrolytic aluminum production.
[0040] The PM 2.5 A method for preparing clean briquettes with reduced emissions, comprising the following steps:
[0041] (1) Use crushing equipment to crush lumpy bituminous coal, and sieve the obtained crushed products to obtain coal powder particle size including three gradations of less than 10 mesh, 10-60 mesh and greater than 60 mesh (no upper limit). The proportions of pulverized coal in the three gradations are: less than 10 mesh content is 10%, 10-60 mesh content is 50%, and greater than 60 mesh content is 40%; block red mud additives are crushed and screened in the same way;
[0042] (2) Add briquette binder tapioca starch to the coal powder and red mud powder obtained in the a...
Embodiment 2
[0046] Same as Example 1, except that the bituminous coal was changed into anthracite to obtain clean coal briquettes (No. 1 anthracite).
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