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Wet flue gas desulfurization system online decontamination scale inhibitor and preparation method thereof

A technology of wet flue gas desulfurization and anti-scaling agent, which is applied in the preparation of detergent mixture composition, chemical instruments and methods, detergent composition, etc., can solve the problems of high investment and operation cost of treatment equipment, and achieve the improvement of material Composition and composition, accelerated desulfurization reaction, and effect of reducing surface tension

Inactive Publication Date: 2018-08-17
JILIN ELECTRIC POWER RES INST LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, desulfurization wastewater must be set up separately, and the investment and operation costs of treatment equipment are relatively high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0014] A preparation method of online decontamination and antiscaling agent for wet flue gas desulfurization system, comprising the following steps,

[0015] Step 1. Add 50-100 mg of tritylene phosphate, 700-1000 mg of sodium octadecyl sulfate, 200-400 mg of quaternary sodium ammonium, and 700-100 mg of sodium lauryl sulfate into 1 L of distilled water at 50-70 °C under continuous stirring. 1000mg, stirred for 10 minutes at a stirring speed of 80-100r / min to obtain mixture 1;

[0016] Step 2: Heat the mixture 1 in the step 1 to 80-100°C, then stir at a speed of 160-200r / min, add 30-40g of sodium phytate and 2-3g of sodium methacrylate in sequence during stirring , 10-25 mg of potassium stearate, 10-18 g of tetrasodium EDTA, and stirred for 5-8 minutes to obtain mixture 2;

[0017] Step 3, uniformly cooling the mixture 2 in the step 2 to normal temperature (15-25° C.) at a cooling rate of 10-15° C. / h.

Embodiment 1

[0019] In 1L of 50% distilled water which was continuously stirred, 50 mg of triglyceride phosphate, 700 mg of sodium octadecyl sulfate, 200 mg of quaternary ammonium sodium, and 700 mg of sodium lauryl sulfate were successively added, and stirred for 10 minutes at a stirring speed of 80 r / min to obtain mixture 1;

[0020] Heat the mixture 1 to 80°C, and then stir at a speed of 160r / min. During stirring, add 30g of sodium phytate, 2g of sodium methacrylate, 10mg of potassium stearate, and 10g of tetrasodium EDTA in sequence, and stir for 5 minutes to obtain mixture 2;

[0021] The mixture 2 was uniformly cooled to normal temperature (15-25°C) at a cooling rate of 10°C / h.

Embodiment 2

[0023] Into 1L of distilled water at 70°C with continuous stirring, add 100 mg of tritylene phosphate, 1000 mg of sodium octadecyl sulfate, 400 mg of quaternary ammonium sodium, and 1000 mg of sodium lauryl sulfate in sequence, and stir for 10 minutes at a stirring speed of 100 r / min. Mixture 1 is obtained;

[0024] Heat the mixture 1 to 100°C, and then stir at a speed of 200r / min. During stirring, add 40g of sodium phytate, 3g of sodium methacrylate, 25mg of potassium stearate, and 18g of tetrasodium EDTA, and stir for 8 minutes to obtain mixture 2;

[0025] The mixture 2 was uniformly cooled to normal temperature (15-25°C) at a cooling rate of 15°C / h.

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Abstract

The invention discloses a wet flue gas desulfurization system online decontamination scale inhibitor and a preparation method thereof, belongs to the field of chemical treatment agents, and particularly relates to a wet flue gas desulfurization system online decontamination scale inhibitor and a preparation method thereof. 700-1000mg of 100% mass lauryl sodium sulfate, 200-400mg of 100% mass quaternary ammonium sodium, 300-600mg of 100% mass sodium stearyl sulfate, 2-3g of 100% mass methacrylic sodium, 10-18g of 100% mass EDTA (ethylene diamine tetraacetic acid) tetrasodium, 30-40g of 100% mass phytic acid sodium salt hydrate, 50-100mg of 100% mass tributyl phosphate, 10-25mg of 100% mass potassium stearate and the rest distilled water are added into each liter of distilled water. The scale inhibitor is applicable to running wet flue gas desulfurization system online scale prevention and decontamination, the scale inhibitor is used once every 3-6 months, 0.1L of decontamination agent is added into 1L of slurry, the scale inhibitor is directly added into desulfurization slurry and used for 3-4 times every year, impurity deposition rate is reduced by 85% or more, and system blockingrate is reduced by 90% or more.

Description

technical field [0001] The invention belongs to the field of chemical treatment agents, in particular to an online decontamination and antiscaling agent for a flue gas desulfurization system and a preparation method thereof. Background technique [0002] With the implementation and implementation of increasingly stringent environmental protection policies, the role of desulfurization equipment for industrial boilers is becoming more and more significant. Since wet flue gas desulfurization is a typical gas-liquid reaction, it has the advantages of high efficiency, stable operation, fast reaction rate, and high utilization rate of desulfurizer. Therefore, wet flue gas desulfurization is the most widely used, and its market share accounts for about 90%. [0003] However, the process has the following problems: 1) the waste liquid treatment is difficult and expensive; 2) the slurry is highly corrosive, and the system is frequently blocked. This is mainly because wet flue gas de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D10/04
CPCC11D10/04C11D1/62C11D1/146C11D2111/20
Inventor 张春波王久生刘熙旸张建新赵维愚周诗宇董冠良杨雪胡婧婷田姝
Owner JILIN ELECTRIC POWER RES INST LTD
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