Forming method of lignite lump coal facilitating container transport

A molding method and container technology, which are applied in the petroleum industry, solid fuels, fuels, etc., can solve the problems of high energy consumption, increased processing cost, and high heating temperature, and achieve good mining and use, good transportation performance, and high molding pressure. Effect

Inactive Publication Date: 2010-12-29
ANHUI KEDA IND CO LTD +1
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  • Summary
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AI Technical Summary

Problems solved by technology

This method not only consumes high energy, which leads to increased processing costs, but also has a heating temperature as high as 460°C, so it is not suitable for the molding of Australian young lignite with a very low ignition point (about 170°C).

Method used

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Comparison scheme
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Embodiment Construction

[0023] A lignite coal block forming method convenient for container transportation of the present invention will be further described in detail below in conjunction with the embodiments.

[0024] 1. Control the temperature and moisture content of raw materials

[0025] Put lignite powder (with a particle size below 1mm) into the drying oven for drying, firstly carry out low-temperature drying, when the moisture content is close to the required value, increase the temperature, and when the temperature and moisture content meet the requirements, it can be taken out and pressed (three groups of samples ).

[0026] Table 1 Moisture content and temperature of samples

[0027] serial number

Moisture content (weight%)

temperature(℃)

Sample 1

17

80

Sample 2

13

100

Sample 3

10

100

[0028] 2. Lump coal pressing

[0029] The processed pulverized coal is distributed through the distribution system of the hydrau...

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PUM

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Abstract

The invention discloses a forming method of a lignite lump coal facilitating container transport, which comprises the following steps of: (1) treating raw materials: adjusting the temperature of lignite powder to between 95 and 105 DEG C and the water content to between 12 and 14 percent (weight) by using a drying device; (2) pressing and forming: pressing the lignite powder by using a hydraulic machinery, controlling the pressing pressure to more than 35 MPa, and pressing for three to four times; and (3) cooling: naturally cooling the pressed lump coal by standing. The forming method of lignite lump coal facilitating the container transport has the advantages of simple processing technology, high water resistance and stability of the formed lump coal, contribution to the container transport by sea and land, low dust pollution of coal during use, contribution to environmental protection and great promotion of mining and use of Australian lignite and other lignite.

Description

technical field [0001] The invention relates to a lignite coal block forming method, in particular to a lignite coal block forming method convenient for container transportation, which is especially suitable for forming young Australian lignite coal blocks with high moisture content and low ignition point, and can also be used for other high moisture content Coals with low calorific value. Background technique [0002] Lignite has the advantages of cleanness, low volatility and low sulfur, but at the same time, it has the disadvantages of high humidity, low ignition point and large carbon dioxide emissions, and it has poor thermal stability, high chemical activity, easy spontaneous combustion, and is difficult to transport, store and sell. Due to the increasingly tense global energy resources, the economic value of lignite has gradually become prominent. Countries with lignite resources are now actively studying the method and amount of lignite used as fuel coal. Lignite is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/08C10L5/04
Inventor 陈洲文阎铭全峰蔡云周超过健黄惟
Owner ANHUI KEDA IND CO LTD
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