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Tetramethyl guanidine hydroxy-acid salt composite desulfurizing agent and preparation method thereof

A technology of tetramethylguanidine hydroxy acid salt and tetramethylguanidine, which is applied in the field of desulfurizer and its preparation, can solve the problem of secondary pollution of by-products, such as low desulfurization efficiency, etc. The effect of secondary pollution and high recycling value

Active Publication Date: 2011-02-23
王传良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of secondary pollution by by-products and low desulfurization efficiency of the existing desulfurization technology, the present invention provides a tetramethylguanidine hydroxy acid salt composite desulfurizer and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Take by weighing 1219.00 kilograms (industrial grade) of 1,1,3,3-tetramethylguanidine, add in the enamel reactor of 3000 liters, under stirring, add 1090.00 kilograms of α-glycolic acid (industrial product) at normal temperature, heat up Stir and react at 60°C for 4 hours to obtain 2309 kg of viscous reactants. Under stirring, add 1.00 kg of free radical inhibitor iso-Vc, 4.00 kg of metal ion complexing agent EDTA, viscosity reducer hydroxyethylethylenediamine and 50.00 kg of the condensate of glyoxal was stirred at 60°C for 6 hours, then lowered to 5°C and stirred for 5 hours to obtain 2364 kg of liquid composition.

[0018] The liquid composition was subjected to SO2 absorption measurement, and its saturated absorption was 25.5% by weight, and the saturation time was 2.5 hours.

[0019] Use this liquid composition for 10000M 3 / h flue gas desulfurization device desulfurization. Absorb under normal pressure, the absorption temperature is 60°C. SO in the imported flu...

Embodiment 2

[0021] Weigh 1219.00 kilograms (industrial grade) of 1,1,3,3-tetramethylguanidine, add in the enamel reactor of 3000 liters, under stirring, add 1000.00 kilograms of α-hydroxy propionic acid (industrial product) under normal temperature, The temperature was raised to 70°C and the reaction was stirred for 2 hours to obtain 2219 kg of viscous reactant. Under stirring, add 0.50 kg of free radical inhibitor phthalophenol, 2.00 kg of metal ion complexing agent sodium gluconate, 40.00 kg of condensate of viscosity reducer hydroxyethyl ethylenediamine and glyoxal, at a temperature of 60 ° C Stir for 8 hours, then lower the temperature to 0°C and stir for 5 hours to obtain 2261.5 kg of liquid composition.

[0022] Subject this liquid composition to SO 2 Absorption determination, its saturated absorption is 33.5% (weight), saturated

[0023] The time is 1.5 hours.

[0024] Use this liquid composition for 10000M 3 / h flue gas desulfurization device desulfurization. Absorption under...

Embodiment 3

[0026] Accurately weigh 1219.00 kilograms (industrial grade) of 1,1,3,3-tetramethylguanidine, add in the enamel reaction kettle of 3000 liters, under stirring, add 670.00 kilograms of L-malic acid (industrial product) under normal temperature, The temperature was raised to 40°C and the reaction was stirred for 5 hours to obtain 1889 kg of viscous reactant. Under stirring, add 0.40 kg of free radical inhibitor phthalophenol, 3.00 kg of metal ion complexing agent sodium gluconate, 60.00 kg of condensate of viscosity reducer hydroxyethylethylenediamine and glyoxal, at a temperature of 60 ° C Stir for 4 hours, then lower the temperature to 5°C and stir for 5 hours to obtain 1952.4 kg of liquid composition.

[0027] Subject this liquid composition to SO 2 According to the absorption measurement, the saturated absorption is 35.5% (weight), and the saturation time is 3.0 hours.

[0028] Use this liquid composition for 10000M 3 / h flue gas desulfurization device desulfurization. A...

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PUM

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Abstract

The invention discloses a tetramethyl guanidine hydroxy-acid salt composite desulfurizing agent and a preparation method thereof. The tetramethyl guanidine hydroxy-acid salt composite desulfurizing agent comprises the following components in percentage by mass: 50 to 85 percent of 1,1,3,3-tetramethyl guanidine, 10 to 45 percent of Alpha-hydroxy acid, 0.01 to 1 percent of free radical inhibitor, 0.05 to 2 percent of metal ion complexing agent, and 1 to 5 percent of viscosity reducer, wherein the Alpha-hydroxy acid is one or mixture of more than one of glycolic acid, Alpha-hydracrylic acid, Alpha-hydroxybutyric acid, phenyllactic acid, malic acid, citric acid and Alpha-hydroxy diacid. The desulfurizing agent has the advantages of high desulphurization effect, high by-product recovery value,light secondary pollution, reproducible and recycling absorption liquid and the like, has good economic benefit and environmental protection effect, and can be widely used in the thermal power generation field.

Description

Technical field [0001] The invention relates to a desulfurizer and a preparation method thereof, in particular to a tetramethylguanidine hydroxy acid salt composite desulfurizer and a preparation method thereof. Background technique [0002] Currently, due to the massive use of coal as fuel in most countries, the direct consequence of which is SO 2 The continuous increase of air pollution has aggravated the air pollution. Others such as smelting and phosphate fertilizers also produce a large amount of SO 2 industrial waste gas. SO 2 It is the root cause of acid rain. According to the statistics of 77 cities in my country in 1994, the annual average pH of precipitation is 3.84-7.54, 48.1% of which have an annual average pH lower than 5.6, and 81.6% of cities have experienced acid rain. Acid rain has become an important factor restricting economic and social development, and excessive SO 2 will cause harm to human health, SO 2 Easily soluble in human blood and other mucus...

Claims

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Application Information

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IPC IPC(8): B01D53/14
Inventor 王传良
Owner 王传良
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