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Coal evaluation method and system

An evaluation method and technology for coal types, which can be applied to measurement devices, instruments, scientific instruments, etc., and can solve the problems of inaccurate simulation of industrial devices, long evaluation period, and large investment.

Inactive Publication Date: 2011-08-10
HUNAN HUAYIN ENERGY TECH
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  • Application Information

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Problems solved by technology

The pyrolysis upgrading device has better operational flexibility, and the quality of the semi-coke and tar produced is also relatively good, but the device has a complicated process and high difficulty in operation, so it is not suitable as a coal type evaluation device
[0007] To sum up, there are mainly two types of existing coal type evaluation techniques. One is small-scale experiments. This evaluation method cannot be accurate due to the small sample size used, simple process, and ideal heating and collection systems. Simulation of industrial installations
The other is large-scale industrial installations. This evaluation method can well simulate industrial production installations, and the data obtained are relatively convincing. However, this kind of large-scale industrial installations has a long evaluation cycle, large investment, and high risks, resulting in human and material resources. Great waste

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Examples of coal type evaluation in Huolinhe Coal Mine, Inner Mongolia:

[0062] Put 10kg of coal samples from the Huolinhe mining area in Inner Mongolia into the raw coal hopper of the coal type evaluation system of the present invention, at first according to the properties of the coal, the control system determines the size of the required gas flow, and first in the control computer of the SPU system Input dry gas flow rate 15m 3 / h, 16m 3 / h, 18m 3 / h, 20m 3 / h, drying gas temperature 150°C, 180°C, 200°C, 220°C, 250°C, when the gas flow rate measured by the vortex flowmeter reaches the set flow rate, and the temperature measured by the thermometer at the inlet of the dryer reaches the set temperature, the control is turned on The material-limiting level switch under the raw coal hopper unloads the coal sample into the dryer of the coal type evaluation system of the present invention for drying, and the drying time is 80min, 90min, 100min, 110min, 120min, and 130m...

Embodiment 2

[0069] Example of coal type evaluation in Xiaonangou Coal Mine, Shaanxi:

[0070] Pack 10kg of coal samples from the Xiaonangou mining area in Shaanxi into the coal type evaluation system of the present invention, first set the gas flow rate at 15m according to the properties of the coal 3 / h, 16m 3 / h, 18m 3 / h, 20m 3 / h, the drying gas temperature is 150°C, 180°C, 200°C, 230°C, 250°C, and the moisture content is measured respectively when the drying time is 80min, 90min, 100min, 110min, 120min, and 130min. When the nitrogen drying temperature is 230 ℃, the flow rate of dry nitrogen is 16m 3 / h, and the moisture content of the coal sample when the drying time is 100min is 5.8% (below 6%), and the corresponding parameters are determined to be the best drying experimental parameters. Also set the gas flow rate to 13m 3 / h, 14m 3 / h, 15m 3 / h, 16m 3 / h, the pyrolysis gas temperature is 550°C, 590°C, 620°C, 650°C, when the pyrolysis time is 40min, 50min, 60min, 70min, 80m...

Embodiment 3

[0074] Example of coal type evaluation in Yongfeng Coal Mine, Yunnan:

[0075] First, according to the nature of the coal, first set the gas flow rate to 12m 3 / h, 15m 3 / h, 16m 3 / h, 18m 3 / h drying gas temperature 150°C, 180°C, 200°C, 220°C, 250°C, put 10kg of coal samples from Yongfeng Coal Mine in Yunnan into the coal type evaluation system of the present invention, and the drying time is 100min, 110min, 120min, 130min respectively , 140min, and 150min to measure the moisture content of the coal sample, and the dry gas temperature is 180°C, and the dry nitrogen flow rate is 15m 3 , when the drying time is 130min, the moisture content of the coal sample is determined to be 5.9% (below 6%), and the corresponding parameters are determined to be the best drying experimental parameters. Set the gas flow rate to 8m in turn 3 / h, 10m 3 / h, 12m 3 / h, 14m 3 / h, 16m 3 / h, pyrolysis gas temperature 580 ℃, 600 ℃, 660 ℃, 680 ℃, 700 ℃, when the pyrolysis time is respectively 50...

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Abstract

The invention relates to a coal evaluation method and a system. The method comprises the following steps: heating gas used for drying and pyrolyzing coal and controlling the flow of the gas; drying, drying the pyrolyzed coal and carrying out pyrolysis reaction; processing the gas or the gas generated by solid after drying and pyrolyzing and collecting low-temperature coal tar; and automatically controlling the technological parameters of coal drying and pyrolysis and monitoring the data of the coal drying and pyrolysis in real time while the above steps are carried out. The system comprises aheating and flow control device, a drying and pyrolyzing device, a gas processing and low-temperature coal tar collecting device and a process automatic control and data real-time monitoring device. The method and the system can accurately simulate and measure the productivity and the technological parameters of a product, evaluate the property and usage of the coal and forecast the problems possibly caused in an amplified industrialization process.

Description

technical field [0001] The invention relates to a coal type evaluation method and system. Background technique [0002] my country is a country with coal as the main energy source. Coal accounts for more than 70% of China's energy structure. It is also the largest coal producer and consumer in the world, but oil and natural gas are relatively in short supply. Relevant experts predict that in the next 50 years, the pattern of coal as the main energy source in my country will not change. Vigorously developing the coal chemical industry is the main trend of my country's future energy development. Coal chemical industry involves many fields such as coal coking, gasification, liquefaction and coal chemical products, with metallurgical coke production, synthetic ammonia gas production and city gas engineering as the main industry characteristics. In the second half of the 20th century, with the rapid development of my country's economy, the coal chemical industry has also achiev...

Claims

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Application Information

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IPC IPC(8): G01N25/00G01N1/44
Inventor 魏远宾文锦何曙光张卫东
Owner HUNAN HUAYIN ENERGY TECH
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