Method for optimizing SNCR (selective non-catalytic reduction) denitrification system of garbage incinerator by adding anionic surfactant

A technology of surfactant and waste incinerator, which is applied in the field of SNCR denitrification of waste incinerator, can solve the problems such as unfavorable promotion and use of waste incineration power station, increase the difficulty of technical process, etc., and achieve the reaction efficiency and time, low price and improved efficiency Effect

Inactive Publication Date: 2015-05-27
GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these composite additives have a variety of raw materials, which increases the difficulty of the technical process and is not conducive to their promotion and use in waste incineration power plants.

Method used

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  • Method for optimizing SNCR (selective non-catalytic reduction) denitrification system of garbage incinerator by adding anionic surfactant
  • Method for optimizing SNCR (selective non-catalytic reduction) denitrification system of garbage incinerator by adding anionic surfactant
  • Method for optimizing SNCR (selective non-catalytic reduction) denitrification system of garbage incinerator by adding anionic surfactant

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Effect test

Embodiment 1

[0027] Embodiment 1: Adding anionic surfactant to optimize the method of SNCR denitrification system of waste incinerator

[0028] 1) Mix and dilute the ammonia water from the ammonia delivery module and the soft water from the soft water delivery module in the dilution module;

[0029] 2) At the same time, the required dose of sodium lauryl polyoxyethylene ether sulfate (SLES) is delivered to the dilution module described in step 1) under the control of the calculation module, so that the anionic surfactant added to the ammonia water during the dilution process; A mixed solution of ammonia water was obtained after mixing, the temperature was 28°C, the mass fraction of ammonia water in the mixed solution was 18wt%, and the mass fraction of SLES was 0.5 wt %;

[0030] 3) Under the control of the ammonia injection module, the above ammonia-water mixed solution is sent to the furnace through compressed air (at a temperature of 21°C) for denitrification reaction with flue gas; 6 ...

Embodiment 2

[0036] Embodiment 2: Adding anionic surfactant to optimize the method of SNCR denitrification system of waste incinerator

[0037] 1) Mix and dilute the ammonia water from the ammonia delivery module and the soft water from the soft water delivery module in the dilution module;

[0038] 2) At the same time, the required dose of sodium lauryl polyoxyethylene ether sulfate (SLES) is delivered to the dilution module described in step 1) under the control of the calculation module, so that the anionic surfactant added to the ammonia water during the dilution process; A mixed solution of ammonia water was obtained after mixing, the temperature was 28°C, the mass fraction of ammonia water in the mixed solution was 18wt%, and the mass fraction of SLES was 1 wt %;

[0039] 3) Under the control of the ammonia injection module, the above ammonia-water mixed solution is sent to the furnace through compressed air (at a temperature of 21°C) for denitrification reaction with flue gas; 6 g...

Embodiment 3

[0045] Embodiment 3: Adding anionic surfactant to optimize the method of SNCR denitrification system of waste incinerator

[0046] 1) Mix and dilute the ammonia water from the ammonia delivery module and the soft water from the soft water delivery module in the dilution module;

[0047] 2) At the same time, the required dose of sodium lauryl polyoxyethylene ether sulfate (SLES) is delivered to the dilution module described in step 1) under the control of the calculation module, so that the anionic surfactant added to the ammonia water during the dilution process; After mixing, the ammonia water mixed solution was obtained, the temperature was 28°C, the mass fraction of ammonia water in the mixed solution was 18wt%, and the mass fraction of SLES was 2wt%;

[0048] 3) Under the control of the ammonia injection module, the above ammonia-water mixed solution is sent to the furnace through compressed air (at a temperature of 21°C) for denitrification reaction with flue gas; 6 gro...

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Abstract

The invention discloses a method for optimizing a SNCR (selective non-catalytic reduction) denitrification system of a garbage incinerator by adding an anionic surfactant. The method comprises the step of adding a certain amount of anionic surfactant in an ammonium water diluting process based on the existing SNCR denitrification method. After the anionic surfactant and an ammonium water solution are mixed and sprayed to a hearth, the mixture is decomposed at high temperatures to generate active free radicals such as -OH, so that the reaction efficiency and time of atomized ammonium water drops and NOx in smoke are effectively ensured, the integral denitrification efficiency of the SNCR system is improved, the optimum reaction temperature region is expanded, and moreover, no adverse influence is brought to stable combustion of the incinerator. Compared with the existing SKCR denitrification compound additives, the method disclosed by the invention is simple in process, single in additive and low in cost, and thus is a method which can effectively improve the SNCR denitrification efficiency of the garbage incinerator and has a relatively broad application prospect.

Description

technical field [0001] The invention relates to an SNCR denitrification method for a garbage incinerator, in particular to a method for optimizing the SNCR denitrification system of a garbage incinerator by adding an anionic surfactant. Background technique [0002] Municipal solid waste incineration will produce pollutants such as nitrogen oxides. If they are directly discharged into the environment without passing through the flue gas purification device, it will have a bad impact on the ecological system. Most of the existing waste incineration power plants in operation have installed selective non-catalytic reduction (SNCR) denitrification systems to deal with NO in flue gas. x , but the actual denitrification efficiency of SNCR deviates from the design value due to the variable load, complex flue gas composition, and fluctuation of the optimal reaction temperature window in actual operation, and the operating efficiency is low. [0003] In order to solve the problem of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/56B01D53/79
CPCB01D53/56B01D53/79
Inventor 李茂东杨波倪进飞马括薛峰王小聪张辉
Owner GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST
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