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Method for applying vanadium-based coal gasification catalyst to coal-fired industrial fluidized beds or entrained-flow beds

An application method and catalyst technology are applied in the application field of a novel vanadium-based coal gasification catalyst in a coal-fired industrial fluidized bed or an entrained bed, which can solve the problems of high cost, high production cost, difficult application, etc. Small amount and simple addition method

Inactive Publication Date: 2018-07-31
杨秋良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The new vanadium-based coal gasification agent contains expensive industrial vanadium pentoxide, and the production cost is high when the addition amount is large, so it is difficult to apply in industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Inferior anthracite, coal quality analysis, volatile matter 12.01%, ash content 52.5%, fixed carbon 35.49%, calorific value 3734 kcal / kg, added V content per ton of coal 2 o 5 36.55% BaO.Ba(VO 3 ) 2 Mix 1.1kg of catalyst evenly, and take samples to analyze the V in the coal 2 o 5 It is 0.398‰, volatile matter is 11.63%, ash content is 52.65%, fixed carbon is 35.72%, and calorific value is 3738.15 kcal / kg. The above-mentioned coal was added on a φ0.6m fluidized bed test bench, and the blank was used as a control for continuous trial burning for 24 hours. The results are as follows: the coal consumption per kilogram of blank steam is 313.18g / kg, the standard coal consumption of blank steam is 167.06g / kg, the temperature of the blank combustion layer is 920.59°C, the temperature of the middle layer furnace is 799.06°C, the temperature of the upper layer furnace is 613.41°C, the air supply volume 410NM 3 / h, the outlet flue gas contains O 2 The amount is 3.4%, and...

Embodiment 2

[0023] In the inferior anthracite of embodiment 1, add V 2 o 5 2.10% mix homogeneously with 10kg of catalyst produced from vanadium-containing stone coal. Sampling and analysis of V in coal 2 o 5 0.209‰, volatile matter 11.54%, ash content 53.67%, fixed carbon 34.79%, calorific value 3650.4 kcal / kg. Continuous 24-hour test burning on a φ0.6m fluidized bed test bench, the result is 252.3g coal consumption per kg steam / kg, the converted standard coal consumption is 131.57g / kg. 21.24% relative to blank coal saving, which can indirectly reduce CO emissions 2 21.24%.

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Abstract

The invention specifically relates to a method for applying a novel vanadium-based coal gasification catalyst to coal-fired industrial fluidized beds and entrained-flow beds, belonging to the field ofthe fire coal industry. According to the method, a certain amount of the vanadium-based coal gasification catalyst is added into fire coal for a coal-fired industrial fluidized bed or entrained-flowbed; the catalyst and the fire coal are uniformly mixed and then fed into a furnace; soot in a cyclone dust collector and coal economizer is returned into the furnace for combustion; so enrichment ofthe vanadium-based coal gasification catalyst in the furnace and prolongation of the retention time of the catalyst in the furnace are realized, which allows a catalytic reaction to be completed. Themethod has the following beneficial effects: 1, the process of addition is simple, and large-scale equipment reconstruction for coal-fired power plants and coal-consuming units; 2, the addition amountof the catalyst is low and is 0.02 to 0.03% (in terms of V2O5) of the weight of the fire coal, so addition cost is low; and 3, coal can be saved by 25% or more, and emission of CO2 is indirectly reduced by 25% or more accordingly, so good economic benefits, social benefits and environmental protection benefits are produced.

Description

technical field [0001] The invention belongs to the coal-burning industry, and in particular relates to an application method of a novel vanadium-based coal gasification catalyst in a fluidized bed or an entrained flow bed in the coal-burning industry. Background technique [0002] The new vanadium-based coal gasification catalyst is mainly used in the coal gasification industry to supply CO 2 or with CO 2 Industrial coal-fired flue gas is used as a gasification agent for coal to achieve CO 2 The purpose of improving the thermal efficiency of coal gasification as a whole is through the catalytic conversion of CO into CO through the new vanadium-based coal gasification catalyst. A new type of vanadium-based coal gasification catalyst is used in fluidized bed and entrained bed in coal-fired industry, when external supply of CO 2 or with CO 2 When there is industrial flue gas, the coal-fired fluidized bed and entrained bed combustion furnace conditions are unstable, and the...

Claims

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Application Information

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IPC IPC(8): C10J3/48C10J3/82B01J23/22
CPCB01J23/22C10J3/482C10J3/485C10J3/82C10J2300/093C10J2300/0953C10J2300/0959C10J2300/0986C10J2300/1207Y02P20/52
Inventor 杨秋良
Owner 杨秋良
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