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Desulfurization denitrification agent for flue gas, production method and application thereof

A technology for desulfurization and denitrification and flue gas, which is applied in the field of dry denitrification of flue gas and dry desulfurization and denitrification agent, which can solve the problems of low operating and processing costs, high system investment costs, high operating and processing costs, and complex processes.

Inactive Publication Date: 2017-12-19
中晶昆仑实业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The desulfurization and denitrification efficiency of the SCR method is high, and the emission standard can reach 90%, but the process is complicated, the system investment cost and the subsequent operation and treatment cost are high
The SNCR method has less investment and lower subsequent operation and treatment costs, but the desulfurization and denitrification efficiency can only reach 60%, which cannot meet the increasingly stringent emission requirements

Method used

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  • Desulfurization denitrification agent for flue gas, production method and application thereof
  • Desulfurization denitrification agent for flue gas, production method and application thereof
  • Desulfurization denitrification agent for flue gas, production method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] According to the formula in Table 1, all the components were mixed evenly to obtain the desulfurization and denitrification agent F1. The desulfurization and denitrification agent is used for dry desulfurization and denitrification, and the flow velocity of the flue gas is 2.5m / s; other parameters of the flue gas inlet and flue gas outlet are shown in Tables 2 and 3. Using this desulfurization and denitrification agent for dry desulfurization and denitrification, the concentration of sulfur dioxide in the purified flue gas is 47mg / Nm 3 , the concentration of nitrogen oxides is 99mg / Nm 3 . The desulfurization efficiency reaches 97.94%, and the denitrification efficiency is 84.59%.

[0054] Table 1. Formula of desulfurization and denitrification agent F1

[0055]

[0056]

[0057] Table 2. Flue gas inlet parameters

[0058] serial number

parameter

unit

value

1

Inlet flue gas volume (working condition)

m 3 / h

780000

...

Embodiment 2

[0062] According to the formula in Table 4, all components were mixed evenly to obtain desulfurization and denitrification agent F2. Using this desulfurization and denitrification agent for dry desulfurization and denitrification, the concentration of sulfur dioxide in the purified flue gas is 34mg / Nm 3 , the concentration of nitrogen oxides is 78mg / Nm 3 . The desulfurization efficiency reaches 98.58%, and the denitrification efficiency is 88.49%. The parameters of the flue gas inlet are the same as in Example 1, and the parameters of the flue gas outlet are shown in Table 5.

[0063] Table 4. Formula of desulfurization and denitrification agent F2

[0064]

[0065] Table 5. Flue gas outlet parameters

[0066] serial number

Embodiment 3

[0068] According to the formula in Table 6, the components were mixed evenly to obtain the desulfurization and denitrification agent F3. Using this desulfurization and denitrification agent for dry desulfurization and denitrification, the concentration of sulfur dioxide in the purified flue gas is 26mg / Nm 3 , the concentration of nitrogen oxides is 66mg / Nm 3 . The desulfurization efficiency reaches 98.92%, and the denitrification efficiency is 90.23%. The parameters of the flue gas inlet are the same as in Example 1, and the parameters of the flue gas outlet are shown in Table 7.

[0069]Table 6. Formula of desulfurization and denitrification agent F3

[0070]

[0071]

[0072] Table 7. Flue gas outlet parameters

[0073] serial number

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Abstract

The invention discloses a desulfurization denitrification agent for flue gas, a production method and an application thereof. On the basis of 100 parts by weight, the desulfurization denitrification agent contains the following components: 70-90 parts of MgO, 0.1-3 parts of CaO, 2-10 parts of SiO2, 0.1-0.5 part of V2O5, 0.1-0.5 part of Fe2O3, 0.1-0.4 part of CeO2, 0.1-0.4 part of CoO, 0.1-0.4 part of Co2O3, 0.1-0.4 part of Al2O3, 5-10 parts of MnO2 and 3-8 parts of KMnO4. The desulfurization denitrification efficiency of the desulfurization denitrification agent for flue gas, disclosed by the invention, is ultrahigh.

Description

technical field [0001] The invention relates to a flue gas desulfurization and denitrification agent and its production method and application, in particular to a dry desulfurization and denitrification agent, its production method and the flue gas dry denitrification method. Background technique [0002] Air pollution control has become the subject of environmental governance in today's era. Highly polluting gases mainly include SO 2 and nitrogen oxides NO x . my country is a country with large coal reserves and output, as well as a large energy consumption country. For quite a long period of time, the pattern that my country's primary energy is dominated by coal will not change. Coal combustion produces a large amount of SO 2 and NO x If the flue gas is not controlled, it will further pollute the air quality. Therefore, reducing SO 2 and NO x emission has become a top priority. [0003] In flue gas pollutant emission control technology, SO 2 The removal technolo...

Claims

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Application Information

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IPC IPC(8): B01D53/60B01D53/90
CPCB01D53/8637B01D53/90B01D2251/10B01D2251/306B01D2251/402B01D2251/404B01D2251/602B01D2255/2065B01D2255/20723B01D2255/2073B01D2255/20738B01D2255/20746B01D2258/0283
Inventor 童裳慧
Owner 中晶昆仑实业集团有限公司
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