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Novel coal gasification catalyst and preparation method and application thereof

A technology for coal gasification and catalyst, applied in the field of coal chemical industry, can solve the problems of insignificant effect of energy saving and emission reduction, large amount of addition, decreased activity, etc., and achieve the effect of stable catalytic effect, small amount of addition, and reduced amount of addition

Active Publication Date: 2016-09-28
湖北华威斯新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The activity of the existing coal gasification catalysts decreases significantly with the prolongation of the reaction time, the amount of addition is large, the cost is high, and the effect of energy saving and emission reduction is not significant in the actual production process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Bituminous coal gasification:

[0032] Blank control, raw material test results, volatile matter 31.09%, fixed carbon 52.73%, ash content 16.18%, calorific value: 6144 kcal, pulverize the above-mentioned bituminous coal to 80 mesh, add briquette binder 2% pressure ball for later use, at φ0 .8m single-stage gasifier for gasification.

[0033] 1. Conventional gasification of air + steam

[0034] a. Control the gas outlet temperature at 250°C and add coal 30kg / time

[0035] b. Furnace temperature is controlled at 950°C-1050°C

[0036] If the furnace temperature is lower than 950°C, turn the ash tray half a circle to one circle, if the furnace temperature is higher than 1050°C, adjust the saturated steam temperature to above 60°C, and control the saturated steam temperature to 50-55°C in normal operation

[0037] C. Before measuring the gas composition, measure the empty height of the furnace; after the measurement, measure the empty height of the furnace, and add coal a...

Embodiment 2

[0044] Anthracite vs. gasification:

[0045] 1. The blank of anthracite is air+water vapor+CO 2 +O 2 Test results of gasification raw materials for gasification agent: volatile matter 15.86%, fixed carbon 68.33%, ash content 15.81%, calorific value: 6873 kcal, crushed to 80 mesh, added briquette binder 2% pressure ball and dried for later use , the gasification conditions are as follows:

[0046] a. Control the outlet gas temperature to 250°C, and add coal 30kg / time.

[0047] b. Fixed CO 2 Supply 60M 3 / h,O 2 The supply amount is not fixed to ensure that the furnace temperature is controlled at 950°C-1050°C, the fan is fully turned on, and the saturated steam temperature is controlled at 60-70°C.

[0048] c. The furnace temperature is controlled between 950°C and 1050°C. If the furnace temperature is lower than 950°C, turn the ash tray half a turn to one turn. If the furnace temperature cannot rise, increase the oxygen supply, and reduce it when it is higher than 1050°C....

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Abstract

The invention belongs to the coal chemical industry, and particularly relates to a coal gasification catalyst and a preparation method and application thereof. Barium carbonate or barium sulfate and vanadium pentoxide are calcined at the temperature of 800 DEG C to 1,000 DEG C, and the barium vanadate coal gasification catalyst is prepared. The coal gasification catalyst prepared through the reaction is prepared from BaO.Ba(V03)2. The coal gasification catalyst and the preparation method and application thereof have the advantages that the kindling point of coal and the gasification reaction temperature of the coal can be reduced; the coal gasification efficiency can be improved by one time or above, and unit time equipment utilization efficiency is improved; the catalytic effect is stable, no attenuation phenomenon occurs, therefore, the adding amount can be reduced, and the production cost can be reduced; CO2 can be recycled, is returned to a furnace and can be converted into combustible gas CO through catalytic action, the thermal efficiency of the coal is improved, and obvious energy saving and emission reducing functions are achieved; the novel coal gasification catalyst is added and is not limited by coal types, the gasification coal range is widened, and coal for gasification can be procured locally.

Description

technical field [0001] The invention belongs to the coal chemical industry, and in particular relates to a coal gasification catalyst and its preparation method and application. Background technique [0002] At present, the development of coal gasification catalysts is mainly carried out around reducing the reaction temperature of coal gasification, increasing the reaction rate of coal gasification, and improving the composition of coal gas. The gas catalysts currently researched and developed include: [0003] (1) single metal salt or oxide catalyst, (2) composite catalyst (3) disposable catalyst. None of the above coal gasification catalysts are capable of converting CO 2 The ability to catalyze the conversion to CO. The activity of the existing coal gasification catalyst decreases obviously with the prolongation of the reaction time, and the addition amount is large, the cost is high, and the effect of energy saving and emission reduction is not significant in the actu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/22C10J3/48C10J3/56
CPCB01J23/22C10J3/48C10J3/56C10J2300/0986Y02P20/10Y02P20/52
Inventor 杨秋良刘豪
Owner 湖北华威斯新能源科技有限公司