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Oxygen-enriched combustion method of lignite methyl alcohol coal slurry fuel material in compression-type internal combustion engine

An oxygen-enriched combustion, internal combustion engine technology, applied in combustion methods, internal combustion piston engines, adding non-fuel substances to fuel, etc., can solve problems such as difficulty in ignition

Inactive Publication Date: 2012-05-02
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Utilizing the high reactivity of lignite and the flammability of methanol, the ultra-fine and ultra-clean lignite methanol coal slurry is prepared as fuel for oil and coal water slurry, and the use of methanol coal slurry and oxygen-enriched combustion technology solves the problem of traditional coal water slurry in internal combustion engines The problem of difficult ignition in the middle, through the CO generated by the exhaust gas 2 Capture to achieve zero carbon emissions in the overall system and eliminate environmental pollution

Method used

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  • Oxygen-enriched combustion method of lignite methyl alcohol coal slurry fuel material in compression-type internal combustion engine
  • Oxygen-enriched combustion method of lignite methyl alcohol coal slurry fuel material in compression-type internal combustion engine

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Embodiment 1

[0028] Such as figure 1As shown, using lignite from Xilinhot area, Inner Mongolia, China, its industrial analysis composition is: moisture 39%, volatile matter 40%, ash content 4.0%, total sulfur 0.3%, calorific value 3800 kcal / kg. The lignite raw coal is roughly ground and screened by a crusher, and the coal powder below 0.5mm after coarse grinding is selected for physical deashing by flotation to obtain an ultra-low ash lignite with an ash content of 0.8% by mass of the coal powder. The moisture in the lignite is dried and removed by using a steam fluidized bed with a production capacity of 10 tons of water evaporation per hour, so that the moisture content in the lignite is reduced to less than 1% of the mass of pulverized coal. Utilize the high-energy ball mill filled with nitrogen to grind the pulverized coal particle size to less than 10 μm. In order to prevent the explosion of ultra-fine coal pulverized in the fluidized bed drying process, the coarse coal pulverized is ...

Embodiment 2

[0032] Such as figure 1 As shown, using lignite produced in China, its industrial analysis composition is: moisture 35-39%, volatile matter 38-40%, ash content 3.5-4.0%, total sulfur less than 0.3%, calorific value greater than 3500 kcal / kg. The lignite raw coal is roughly ground and screened by a crusher, and the coal powder below 0.5mm after coarse grinding is selected for physical deashing by flotation to obtain ultra-low ash lignite with an ash content less than 0.8% of the mass of the coal powder. The steam fluidized bed drying is used to remove the moisture in the lignite, so that the moisture content in the lignite is reduced to less than 1% of the mass of the pulverized coal. Utilize the high-energy ball mill filled with nitrogen to grind the pulverized coal particle size to less than 10 μm. In order to prevent the explosion of ultra-fine coal pulverized in the fluidized bed drying process, the coarse coal pulverized is first dried and then ultra-finely ground. In orde...

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Abstract

The invention discloses an oxygen-enriched combustion method of a lignite methyl alcohol coal slurry fuel material in a compression-type internal combustion engine. The problem of difficulty in ignition of the traditional water coal slurry in the internal combustion engine is solved by utilizing the methyl alcohol coal slurry and oxygen-enriched combustion technology; and zero carbon emission of the whole system is realized through collecting CO2 generated by tail gas, and the pollution to environment is eliminated. The method provided by the invention adopts the following technical scheme which comprises the following steps of: taking ultra-fine ultra-clean ignite methyl alcohol coal slurry as a fuel material; taking pure oxygen and CO2 mixed gas with high concentration in recycled tail gas as a combustion-supporting gas; and carrying out enriched-oxygen combustion in the compression-type internal combustion engine, and generating a driving force by the compression-type internal combustion engine. Combustion is carried out by adopting pure oxygen and the recycled CO2 in the tail gas of the internal combustion engine as the combustion-supporting gas, the formation of NOX in the tail gas is reduced effectively, the concentration of CO2 in the tail gas is improved, the tail gas treatment expense is reduced, and the treated tail gas is easy to compress and store. The combustion method is suitable for a distribution-type power generation system and a large ship motive power system.

Description

technical field [0001] The invention relates to a combustion method of lignite fuel, in particular to an oxygen-enriched combustion method of lignite methanol coal slurry fuel in a compression internal combustion engine. technical background [0002] Ultra-fine coal slurry can replace light diesel oil in internal combustion engines and gas turbines. Among them, the oil substitution range of ultra-fine ultra-clean methanol coal slurry is much larger than that of fine coal water slurry, and it has the characteristics of saving fuel compared with oil coal slurry. . Methanol raw materials come from a wide range of sources, and the methanol coal slurry prepared by using methanol and dry lignite can inhibit the reabsorption of lignite. Therefore, it has great advantages to prepare lignite into methanol coal slurry for application. [0003] At present, the coal slurry fuels developed by various countries in the world mainly include oil-coal slurry, coal-water slurry, oil-water coa...

Claims

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Application Information

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IPC IPC(8): F02M43/00F02M43/04F02M25/07C10L1/32F23K1/02
CPCY02T10/121Y02E20/34
Inventor 余江龙韩艳娜李先春阿加西.塔玛赛比孟繁锐尹丰魁王冬梅王南窦金孝
Owner UNIV OF SCI & TECH LIAONING
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