A molding process of low-rank coal and biomass and molding materials produced by the process
A molding process and a technology for biomass raw materials, applied in the field of coking, can solve the problems of inability to realize large-scale application of low-rank coal and biomass, low utilization of tamping coke ovens, etc., and achieve resource utilization, considerable economic benefits, Overcome the effects of low utilization
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Embodiment 1
[0029] The molding process of low-rank coal and biomass described in the present embodiment comprises the following steps:
[0030] (1) pack the stalks with a water content of 18wt% into bundles, and obtain a volume of 0.5m 3 cuboid-shaped bales;
[0031] (2) filling sub-bituminous coal with a water content of 20wt% into the inside of the bundle to form a material with a core-shell structure; the mass ratio of the sub-bituminous coal to the bundle is 1:5;
[0032] (3) Compress the material under the conditions of 50°C and 15MPa to obtain a molding material containing low-rank coal and biomass, and the density ratio of the molding material to the bundled material is 2:1.
[0033] Push the molded material prepared in this example into a tamping coke oven for upgrading treatment, control the upgrading temperature to 850°C, and the upgrading time to 16 hours, collect the overflowing crude gas and tar, and obtain charcoal residue at the same time. The amount of crude gas obtained...
Embodiment 2
[0035] The molding process of low-rank coal and biomass described in the present embodiment comprises the following steps:
[0036] (1) pack the straw with a water content of 15wt% into bundles to obtain a volume of 0.5m 3 cuboid-shaped bales;
[0037](2) filling lignite with a water content of 15wt% into the inside of the bundle to form a material with a core-shell structure; the mass ratio of the lignite to the bundle is 1:3;
[0038] (3) Compress the material under the conditions of 100° C. and 30 MPa to obtain a molding material containing low-rank coal and biomass, and the density ratio of the molding material to the bundled material is 3:1.
[0039] Push the molded material prepared in this example into a stamped coke oven for upgrading treatment, control the upgrading temperature to 850°C, and the upgrading time to 16 hours, collect the overflowing crude gas and tar, and obtain coke at the same time. The amount of raw gas obtained in this embodiment is 456Nm 3 / t mol...
Embodiment 3
[0041] The molding process of low-rank coal and biomass described in the present embodiment comprises the following steps:
[0042] (1) The straw with a water content of 16wt% is packaged into bundles to obtain a volume of 0.5m 3 cuboid-shaped bales;
[0043] (2) Mix sub-bituminous coal with a water content of 17wt% and a binder at a mass ratio of 9:1 to form a mixture, and then fill the mixture into the inside of the bundle to form a material with a core-shell structure;
[0044] The mass ratio of the sub-bituminous coal to the bundle material is 1:1, and the binder is an organic binder with a dry distillation weight loss of less than 50% at 850°C in the absence of air, as described in this example The organic binder is preferably coal tar pitch with a softening point of 120°C;
[0045] (3) Compress the material under the conditions of 70° C. and 20 MPa to obtain a molding material containing low-rank coal and biomass. The density ratio of the molding material to the bundle...
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Abstract
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