Semi-coke and biomass mixed type coal and preparation method thereof

A biomass and hybrid technology, applied in the direction of biofuel, waste fuel, solid fuel, etc.

Inactive Publication Date: 2013-10-16
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to propose a mixed briquette of semi-coke and biomass in view of the small particle size of semi-coke produced by the pyrolysis of lignite and the inconvenience of transportation and utilization. The size of the semi-coke and biomass mixed coal can be adjusted, the transportation is convenient, and the utilization of biomass is broadened

Method used

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  • Semi-coke and biomass mixed type coal and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Table 1 Test results of semi-coke and biomass mixed briquettes

[0035] Drop strength / % Compressive strength / N Calorific value Q gr,d / (MJ / ㎏) 87.59 15.1 25.90

[0036] Example 2

[0037] The ratio of semi-coke and biomass mixed briquettes in this embodiment is: 35 parts by mass of biomass and 65 parts by mass of semi-coke. The semi-focus is the same as in Example 1. The preparation method of the semi-coke and biomass mixed briquettes is the same as that of Example 1, except that the pressure of hydroforming is 100 MPa.

[0038] The mixed briquettes of semi-coke and biomass in this embodiment are high-strength coals, and the detection results of the resulting products are as shown in Table 2:

Embodiment 2

[0040] Drop strength / % Compressive strength / N Calorific value Q gr,d / (MJ / ㎏) 87.57 15.3 25.90

[0041] Example 3

[0042] The ratio of semi-coke and biomass mixed briquettes in this embodiment is: 35 parts by mass of biomass and 65 parts by mass of semi-coke. The semi-focus is the same as in Example 1. The preparation method of the semi-coke and biomass mixed briquette is the same as that of Example 1, except that the pressure of hydroforming is 120 MPa.

[0043] The mixed briquettes of semi-coke and biomass in this embodiment are high-strength coals, and the detection results of the resulting products are as shown in Table 3:

Embodiment 3

[0045] Drop strength / % Compressive strength / N Calorific value Q gr,d / (MJ / ㎏) 87.01 15.5 25.90

[0046] Example 4

[0047] The ratio of semi-coke and biomass mixed briquettes in this embodiment is: 35 parts by mass of biomass and 65 parts by mass of semi-coke. The semi-focus is the same as in Example 1. The preparation method of the semi-coke and biomass mixed briquette is the same as that of Example 1, except that the molding temperature is 290°C.

[0048] The mixed briquettes of semi-coke and biomass in this embodiment are high-strength coals, and the detection results of the resulting products are as shown in Table 4:

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Abstract

The invention provides semi-coke and biomass mixed type coal and a preparation method thereof. The semi-coke and biomass mixed type coal comprises the following components in parts by weight: 50-70 parts of semi-coke and 30-50 parts of biomass, wherein the semi-coke is obtained through the low temperature pyrolysis of lignite, and the biomass is forestry biomass. The invention further discloses the semi-coke and biomass mixed type coal and a preparation method thereof. According to the invention, the formula is scientific, the preparation method is convenient and fast, various defects in the prior art are overcome, various problems in the prior art are solved, the size of the semi-coke and biomass mixed type coal is adjustable, the transportation is convenient, and utilization approaches of the biomass are enriched.

Description

technical field [0001] The invention relates to clean coal application technology, in particular to a semi-coke and biomass mixed briquette and a preparation method thereof. Background technique [0002] my country's energy status is poor in oil, low in gas, and relatively rich in coal resources. As an important source of energy, coal has always occupied a dominant position. Coal is the main available energy source. [0003] According to the volatile content of coal, China divides all coal into lignite, bituminous coal and anthracite. Among them, lignite resource reserves account for about 13% of my country's total coal reserves, mainly distributed in the three northeastern provinces, Inner Mongolia Autonomous Region and Yunnan Province. The efficient, clean and rational utilization of lignite resources has very important strategic significance for the sustainable development of our society and national economy. [0004] my country's lignite generally has the characteristi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/04C10L5/44
CPCY02E50/30Y02E50/10
Inventor 张秋民何德民关珺何红亮
Owner DALIAN UNIV OF TECH
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