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Coal-saving desulfurization additive for power plant boiler

A technology of additives and boilers, applied in fuel additives, petroleum industry, fuels, etc., can solve problems such as high coal ash content, blockage of boiler injection ports, and inconvenience in production and life

Inactive Publication Date: 2008-07-30
SHAANXI E LEELY POWER DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the coal combustion process of coal-fired boilers, due to the large ash content of coal and low calorific value, coking often occurs in the boiler. In severe cases, the boiler is forced to shut down, which brings inconvenience to production and life
At the same time, coal produces SO during the combustion process 2 and a few SO 3 Discharged into the atmosphere, seriously polluting the atmosphere
[0004] In order to vigorously carry out clean production and reduce pollutant emissions, at present, coal-fired boilers are generally installed with flue gas desulfurization devices. Although the installation of such desulfurization devices for coal-fired boilers has some effect on desulfurization, the existing combustion process and equipment need to be changed. And the desulfurization effect is not very obvious, and it does not play a combustion-supporting role in the combustion of boiler coal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Each raw material is weighed according to the following weight percentage:

[0018] Calcium Oxide 30% Silica 3% Calcium Ammonium Nitrate 8% Sodium Nitrate 12%

[0019] Potassium permanganate 9% Ammonium nitrate 9% Iron oxide 6% Aluminum oxide 9%

[0020] Activated Charcoal 7% Borax 7%.

[0021] The preparation process of this embodiment is as follows: Weigh the raw materials according to the above weight percentages and mix them, pulverize the mixture with a pulverizer to a powder with a particle size of 80-100 mesh, put the powder in a stirrer and stir for 25 minutes, and after passing the inspection, Packaged into a finished product.

Embodiment 2

[0023] Each raw material is weighed according to the following weight percentage:

[0024] Calcium Oxide 50% Silica 4% Calcium Ammonium Nitrate 6% Sodium Nitrate 10%

[0025] Potassium permanganate 5% Ammonium nitrate 5% Iron oxide 5% Aluminum oxide 5%

[0026] Activated Charcoal 5% Borax 5%.

[0027] The preparation process of this embodiment is the same as that of Example 1.

Embodiment 3

[0029] Each raw material is weighed according to the following weight percentage:

[0030] Calcium Oxide 25% Silica 2% Calcium Ammonium Nitrate 6% Sodium Nitrate 10%

[0031] Potassium permanganate 6% Ammonium nitrate 6% Iron oxide 8% Aluminum oxide 15%

[0032] Activated Charcoal 10% Borax 12%.

[0033] The preparation process of this embodiment is the same as that of Example 1.

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Abstract

The invention discloses a power plant boiler used coal-saving desulfurating additive, which is prepared by mixing calcium oxide, silicon dioxide, calcium ammonium nitrate, sodium nitrate, potassium permanganate, ammonium nitrate, iron oxide, alumina, activated carbon and borax by curtain weight percentages; and then using a pulverizing mill to pulverize the mixture into power, the granularity of which is 80-100 MU; putting the power into a stirrer and stirring the power; packing the power into finished product after the power is tested to be qualified. The invention has obvious sulfur capturing and desulfurizing effects, can save energy and support combustion, can lower the blackness of the exhausted smoke, can clear ashes and remove coke, and need not change the existing combustion process and equipment. The invention is in particular applicable for the coals with high ash content, high sulfur content and low volatile constituent content. The invention can reduce equipment leakage accident caused by poor quality of coal, can ensure the safe operation of the boiler effectively, can ensure the safe operation of electric generating set, therefore being worthy to be spread by all thermal power plants.

Description

technical field [0001] The invention relates to a coal-burning additive, in particular to a coal-saving desulfurization additive for boilers in power plants. Background technique [0002] my country's energy production and consumption are dominated by coal, which accounts for more than 70% of my country's energy consumption. 80% of coal consumption is used for combustion, and coal combustion is the main source of sulfur dioxide and nitrogen oxides in the atmosphere. Sulfur dioxide and soot emissions from coal combustion account for 80-90% of the total emissions. [0003] During the coal combustion process of coal-fired boilers, due to the large ash content of coal and low calorific value, coking often occurs in the boiler. In severe cases, the boiler is forced to shut down, which brings inconvenience to production and life. At the same time, coal produces SO during the combustion process 2 and a few SO 3 Discharged into the atmosphere, seriously polluting the atmosphere....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L10/04
Inventor 沈立新
Owner SHAANXI E LEELY POWER DEV
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