Comprehensive utilization method and device for pulverized coal
A pulverized coal, first-class technology, applied in the field of pulverized coal comprehensive utilization methods and devices, can solve problems such as cracking, affecting tar yield, high asphaltene and dusty tar increasing processing difficulty, etc.
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Embodiment 1
[0109] In this embodiment, the pulverized coal comprehensive utilization device of the present invention is used to process long-flame coal.
[0110] The main properties of the long-flame coal used are shown in Table 1.
[0111] Table 1 Main properties of long-flame coal (raw coal 1)
[0112]
[0113] Raw material pulverized coal particle size range: particle size <5mm, 0.1-1mm range is greater than 70%;
[0114] Experimental method of working condition 1:
[0115] Such as figure 1 As mentioned above, the primary pyrolysis semi-coke 8 after air stripping from the primary settler C-1 is mixed with the high-temperature heating semi-coke 29 lifted from the primary heater D-1 in the premixer A to obtain High temperature material 30.
[0116] Raw pulverized coal 1 and high-temperature material 30 quickly achieve sufficient back-mixing and mass transfer and heat transfer in the primary pyrolyzer B-1 to obtain primary pyrolysis reaction material 2 .
[0117] The primary pyrol...
Embodiment 2
[0170] This embodiment uses the pulverized coal comprehensive utilization device of the present invention to process lignite.
[0171] The main properties of the lignite used are shown in Table 4.
[0172] Table 4 lignite (feed) main properties
[0173]
[0174] Raw material pulverized coal particle size range: particle size <5mm, 0.1-1mm range is greater than 70%;
[0175] (1) adopt the experimental method of 1 of working condition in embodiment 1, main operation condition is as follows, other with reference to embodiment 1:
[0176] The operating conditions of the primary pyrolyzer B-1 are: the pressure is 0.2-0.4MPa(G), and the temperature is 480-550°C;
[0177] The operating conditions of the primary settler C-1 are: the pressure is 0.2~0.4MPa(G), the temperature is 480~540℃;
[0178] The operating conditions of premixer A are: pressure 0.2-0.4MPa(G), temperature 580-620°C;
[0179] The operating conditions of the secondary pyrolyzer B-2 are: pressure 0.2~0....
Embodiment 3
[0189] The present embodiment is to use the pulverized coal comprehensive utilization device of the present invention to process raw materials comprising lignite 90% by weight+heavy oil 10% by weight.
[0190] The main properties of the lignite used are shown in Table 6.
[0191] Table 6 lignite (feed) main properties
[0192]
[0193] Raw material pulverized coal particle size range: particle size <5mm, 0.1-1mm range is greater than 70%;
[0194] Table 7 The main properties of heavy oil (feed) blended
[0195] project
unit
value
Remark
density
20℃,kg / m 3
1050
carbon residue
%weight
22.5%
Sulfur content
% heavy scene
2.0%
heavy metal content
ppm
200
Colloid + asphaltenes
%weight
45%
Solid content
%weight
0.1%
[0196] (1) adopt the experimental method of 1 of working condition in embodiment 1, main operation condition is as fol...
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