High efficiency coal additive

A coal additive and high-efficiency technology, used in the petroleum industry, solid fuels, fuels, etc., can solve the problems of lack of boiler cleaning and corrosion inhibition, and achieve the effect of improving desulfurization effect, improving heat conduction, and accelerating decomposition speed.

Inactive Publication Date: 2007-03-21
郴州市宇洁环保建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it plays a certain role in desulfurization and coal saving, it lacks the effects of coke cleaning and corrosion inhibition on the boiler itself

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Type A high-efficiency coal additives:

[0030] CaO 32%-33% NH 4 HCO 3 3%-3.5%

[0031] ZnO 1%-2% SiO 2 1%-1.5%

[0032] NaHCO 3 5%-6% KAl(SO 4 ) 2 12H 2 O 5%-9%

[0033] Acidified coal gangue 3%-5% NaNO 3 , 21%-22%

[0034] Fe 2 o 3 1%-1.5% MgO 2%-9%

[0035] KCl 1-1.5% KMnO 4 0-1%

[0036] Humic acid 12%-15%

[0037] This dosage form is suitable for coal with heat below 4000 kcal / kg and sulfur content below 1%. The mixing ratio with coal is: the dosage of type A coal additive is 0.8% of the amount of coal burned.

Embodiment 2

[0039] Type B high-efficiency coal additives:

[0040] CaO 44%-50% NH 4 HCO 3 4%-6%

[0041] ZnO 1%-1.5% SiO 2 1%-2.5%

[0042] NaHCO 3 5%-9% KAl(SO 4 ) 2 12H 2 O 5%-7%

[0043] Acidified coal gangue 3%-4% NaNO 3 , 8%-9%

[0044] Fe 2 o 3 1%-1.2% MgO 2%-8%

[0045] KCl 1-1.3% KMnO 4 0-0.5%

[0046] Humic acid 15%-18%

[0047] This dosage form is suitable for use with coal with heat above 6000 kcal / kg and sulfur content above 1.6%. The mixing ratio with coal is: the dosage of type A coal additive is 1.2% of the amount of coal burned.

Embodiment 3

[0049] C-type high-efficiency coal additives:

[0050] CaO 37%-44% NH 4 HCO 3 4%-5%

[0051] ZnO 1.5%-2% SiO 2 2.5%-4%

[0052] NaHCO 3 5%-5.5% KAl(SO 4 ) 2 12H 2 O 5%-6%

[0053] Acidified coal gangue 3%-3.5% NaNO 3 , 8%-10.5%

[0054] Fe 2 o 3 1%-1.5% MgO 2%-10%

[0055] KCl 1-1.5% KMnO 4 1-1.5%

[0056] Humic acid 13%-17%

[0057] This dosage form is suitable for the use of coal with a heat content of 4000-6000 kcal / kg and a sulfur content below 1.5%. The mixing ratio with coal is: the dosage of type A coal additive is 1% of the amount of coal burned. This agent has wide adaptability , The cost is in the middle.

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PUM

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Abstract

The high efficiency coal additive consists of desulfurizer, leavening agent, combustion adjuvant, smoke suppressor and corrosion inhibitor mixed together. The desulfurizer contains CaO, NH4HCO3, ZnO and SiO2; the leavening agent contains NaHCO3, KAl(SO4)2 .12H2O and acidified coal gangue; the combustion adjuvant contains Fe2O3, MgO, KCl, KMnO4 and NaNO3; the corrosion inhibitor is humic acid and NaNO3; and the smoke suppressor is also KMnO4. The high efficiency coal additive is mixed directly with coal for boiler, furnace, kiln, oven, etc. Detection shows that the high efficiency coal additive can result in desulfurizing rate of 85 %, save coal rate by14.77 %, raise heat efficiency by 9.19 %, lower carbon content of coal slag by 14.86 %,and reduce smoke, scale and corrosion by 90 %.

Description

technical field [0001] The invention relates to a high-efficiency coal additive, which is suitable for burning coal such as industrial boilers, power station furnaces, cellar furnaces, steam furnaces and living coal. Background technique [0002] Industrial coal combustion is a large energy consumer and the main source of SO2 polluted air. At present, coal additives in the market have a better single effect, but a poor overall effect. [0003] Chinese invention patent application No. 95115467.2 discloses a "coal additive", which is simply mixed with potassium permanganate, sodium nitrate (or potassium nitrate), and potassium chloride in an appropriate proportion, and its additive potassium chloride accounts for more than 80%. Its chlorine content is too high, it is highly corrosive to metal objects, it is inconvenient to store, and the desulfurization effect is not good. [0004] Chinese invention patent application number 03124816.0 discloses a "coal additive". Limestone...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/10
Inventor 袁伍基谭福梅袁明飞
Owner 郴州市宇洁环保建材有限公司
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