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Flue gas desulfurizing and denitrifying technology in thermal power plant

A technology for desulfurization and denitrification and thermal power plants, which is applied in the field of flue gas desulfurization and denitrification process in thermal power plants. It can solve the problems that cannot meet the needs of the market, the flue gas desulfurization and denitrification process is complicated, and the desulfurization and denitrification efficiency are general. It achieves good chemical adsorption and powerful The effect of adsorption force and prolonging the active time

Inactive Publication Date: 2019-07-19
合肥俄弈电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing flue gas desulfurization and denitrification process is relatively complicated, and the desulfurization efficiency and denitrification efficiency in the flue gas after the desulfurization and denitrification treatment process are average, which cannot meet the needs of the market.

Method used

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  • Flue gas desulfurizing and denitrifying technology in thermal power plant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A thermal power plant flue gas desulfurization and denitration process includes the following steps:

[0023] (1) Cool the original flue gas to 95.5°C, and then pass the cooled flue gas into activated carbon at room temperature for primary filtration treatment to obtain primary filtered flue gas;

[0024] (2) Continue to pass the first-stage filtered flue gas obtained above into the steel slag composite system to obtain the second-stage filtered flue gas; the temperature of the steel slag composite system is 30℃, the humidity is 25%, and the first-stage filtered flue gas inflow rate is 0.8 m³ / h;

[0025] In parts by weight, steel slag 42, vermiculite powder 10, montmorillonite 11, and illite powder 4 are uniformly mixed together, then ground, and passed through an 800-mesh sieve to obtain a mixed powder. The mixed powder is added to the ethanol solution. Add 2.5% melamine of its mass to the ethanol solution, heat to 55°C, stir at 250r / min for 45min, then prepare a sodium bica...

Embodiment 2

[0029] A thermal power plant flue gas desulfurization and denitration process includes the following steps:

[0030] (1) Cool the original flue gas to 97°C, and then pass the cooled flue gas into activated carbon at room temperature for primary filtration treatment to obtain primary filtered flue gas;

[0031] (2) Continue to pass the first-level filtered flue gas obtained above into the steel slag composite system to obtain the second-level filtered flue gas; the temperature of the steel slag composite system is 32℃, the humidity is 30%, and the first-level filtered flue gas flow rate is 0.8 m³ / h;

[0032] In parts by weight, steel slag 45, vermiculite powder 14, montmorillonite 15, and illite powder 6 are uniformly mixed together, then ground and passed through an 800-mesh sieve to obtain a mixed powder. The mixed powder is added to the ethanol solution. Add 3% melamine by mass to the ethanol solution, heat to 55°C, stir at 250r / min for 45min, then prepare a sodium bicarbonate sol...

Embodiment 3

[0037] A thermal power plant flue gas desulfurization and denitration process includes the following steps:

[0038] (1) Cool the original flue gas to 96°C, and then pass the cooled flue gas into activated carbon at room temperature for primary filtration treatment to obtain primary filtered flue gas;

[0039] (2) Continue to pass the first-stage filtered flue gas obtained above into the steel slag composite system to obtain the second-stage filtered flue gas; the temperature of the steel slag composite system is 31℃, the humidity is 28%, and the first-stage filtered flue gas flow rate is 0.8 m³ / h;

[0040] The steel slag 43, the vermiculite powder 12, the montmorillonite 13, and the illite powder 5 are uniformly mixed together in parts by weight, then ground, and passed through an 800-mesh sieve to obtain a mixed powder. The mixed powder is added to the ethanol solution. Add 2.8% melamine by mass to the ethanol solution, heat to 55°C, stir at 250r / min for 45min, then prepare a sodi...

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Abstract

The invention discloses a flue gas desulfurizing and denitrifying technology in a thermal power plant. The flue gas desulfurizing and denitrifying technology comprises the following steps: (1), cooling raw flue gas, and inflating the flue gas into activated carbon at normal temperature for first-stage filtration treatment to obtain first-stage filtered flue gas; (2), continuing inflating the obtained first-stage filtered flue gas into a steel slag composite system to obtain second-stage filtered flue gas; (3), continuing inflating the obtained second-stage filtered flue gas into tetramethyl guanidine lactate-modified starch to obtain third-stage filtered flue gas. By the flue gas desulfurizing and denitrifying technology, the efficiency of removing nitric oxide and sulfur dioxide from theflue gas is high; when the flue gas desulfurizing and denitrifying technology is used for treating the flue gas, the high removing efficiency can be maintained for a long time.

Description

Technical field [0001] The invention belongs to the field of environmental protection, and specifically relates to a flue gas desulfurization and denitration process for thermal power plants. Background technique [0002] In recent years, with the increasingly stringent environmental regulations and the gradual increase in fuel prices, energy conservation and environmental protection have received extensive attention, and higher requirements have been placed on the emission of high-temperature flue gas from thermal power plants and the energy conservation and consumption reduction in flue gas treatment. It is the emission of NOx in the flue gas that has caused great concern in the society. In addition to the traditional dust removal and desulfurization treatment, the flue gas also needs denitration treatment to ensure SO 2 And NO X Both can meet emission standards. [0003] However, the existing flue gas desulfurization and denitrification process is relatively complicated, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/81B01D53/60
CPCB01D53/04B01D53/60B01D53/81B01D2253/102B01D2257/404B01D2258/0283
Inventor 万思露
Owner 合肥俄弈电器有限公司
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