KR20200113678A - Environment-friendly flammable substance combustion power improver - Google Patents

Abstract

The present invention relates to an eco-friendly combustible material combustion power improver and, more specifically, to an eco-friendly combustible material combustion power improver, which increases combustion efficiency to suppress the generation of harmful materials and facilitate combustion by adding the same to an incinerator which burns combustibles, and is improved to extend service life by minimizing oxidation and corrosion of combustion facilities.

Description

Environment-friendly flammable substance combustion power improver

The present invention relates to an eco-friendly combustible material combustion power improver, and more particularly, it is added to an incinerator that burns combustibles to increase the combustion efficiency of combustibles to facilitate combustion and to suppress the generation of harmful substances, and to prevent oxidation and corrosion of combustion facilities. It relates to an improved eco-friendly combustible material combustion power improver to minimize and extend the service life.

In general, most combustible wastes, such as food, vegetables, paper, wood, rubber, leather, and plastics, are treated through incineration.

Incineration is carried out in incinerators, and incinerators are largely divided into five types: fixed bed, stocker, kiln, multi-stage furnace and fluidized bed.

Among these, in Korea, stocker incinerators are most often used, because pretreatment processes are hardly required, power consumption is low, and operation and maintenance are advantageous.

On the other hand, when combustible waste is combusted, unburned carbon content, soot, and sludge are generated along with exhaust gases such as CO, SOx and NOx.

Particularly, a clinker is formed as a deposit of ash on the inner wall of an incinerator or pipe, which lowers combustion efficiency and incineration throughput.

In addition, sufficient temperature, combustion time, and degree of mixing (turbulence) must be satisfied for complete combustion.

However, in practice, the required combustion time differs depending on the type of waste, moisture content, and condition, and the mixing degree (turbulence) is different depending on the structure and operation method of the incinerator, so complete combustion is very difficult, and the adhesion of clinker in the incinerator cannot be prevented.

Accordingly, various studies have been conducted to improve combustion efficiency and complete combustion, and a representative example thereof is a combustion accelerator.

The combustion efficiency of the incinerator can be improved by the catalytic action of the combustion accelerator.

Many technologies for such combustion accelerators have been proposed, which are also presented in several prior patent documents.

Nevertheless, conventional combustion accelerators have a limitation in that their ability to reduce exhaust gases such as CO, SOx and NOx is low, and their ability to reduce unburned carbon content is low, so the amount of dust generated in the incinerator is high, and combustion efficiency is not significantly increased. It is not possible.

In addition, when combustibles, especially solid fuels, are burned, a high concentration of alkali chloride, such as KCl, forms a sediment, and the KCl in this sediment accelerates corrosion in the combustion facility itself when combusting, shortening the life of the facility. Cause.

Korean Patent Registration No. 10-0538120, Combustion Accelerator for Coal Korean Patent Registration No. 10-0485193, Combustion accelerator effective in removing and preventing scale and clinker generation, and reducing air pollutants Korean Patent Registration No. 10-0642146, Fuel additive composition that improves cold resistance, prevents slag, and effectively removes clinker Korean Patent Registration No. 10-0761065, Fuel additive composition Korean Patent Registration No. 10-1170519, Clinker inhibitor Korean Patent Registration No. 10-1246879, Liquid Combustion Catalyst Composition Containing Complex Metal Complex Ion Compounds Korean Patent Registration No. 10-1240549, Combustion Performance Enhancer for Coal Korean Patent Registration No. 10-1333651, Coal Combustion Enhancer Korean Patent Registration No. 10-1586430, Fuel additive composition for improving the combustion rate of pellets and coal fuel and incineration waste Korean Patent Registration No. 10-1697716, additive composition for solid fuel Republic of Korea Patent Publication No. 10-2018-0017759, Combustion promoting composition for coal and its manufacturing method Republic of Korea Patent Publication No. 10-2018-0068353, combustion accelerator Korean Patent Registration No. 10-1906760, High-functional combustion accelerator

The present invention was created to solve the problems in the prior art as described above, and is added to an incinerator that burns combustibles to increase the combustion efficiency of combustibles to facilitate combustion, while also suppressing the generation of harmful substances, and combustion facilities Its main purpose is to provide an improved eco-friendly combustible material combustion power improver so that the service life can be extended by minimizing oxidation and corrosion.

The present invention is a means for achieving the above object, in the environment-friendly combustible material combustion power improving agent used in the form of spraying during combustion in an incinerator; The eco-friendly combustible material combustion power improver is based on 100 ml of water, ferrous sulfate (FeSO ₄ .7H ₂ O) and sodium-citrate (Na-citrate: Na ₃ C ₆ H ₅ O ₇ ) of 1:3 15 g of a mixture mixed in a weight ratio; 10 g of ammonia sulfate; 5.0 ml of methanol; 2.5 g of red mercury(II) oxide; 1.5 g of ethylenediaminetetraacetic acid (EDTA); 2.5 g of borax; 2.5 g sodium hydroxide; And it provides an eco-friendly combustible material combustion power improver, characterized in that the composition of 2.5g triethanol amine.

At this time, the eco-friendly combustible material combustion power improver is formed by adding 25 m of a solution in which a bromo selenium complex salt is dissolved in an aqueous solution of cesium nitrate (Ce (NH ₄ ) ₂ (NO ₃ ) ₆ ) to 100 ml of water. have.

In addition, the environmentally friendly combustible material combustion power improver was added to 6-bromohexanoic acid (94g) to chlorobenzene (100ml), mixed, and heated at 110-120°C for 24 hours in a nitrogen atmosphere. It is also characterized in that it is formed by further adding 15 g of powder obtained by cooling at room temperature and adding ethyl acetate (50 ml) to 100 ml of water.

According to the present invention, it is added to an incinerator that burns combustibles, thereby increasing the combustion efficiency of combustibles to facilitate combustion, suppressing the generation of harmful substances, and minimizing oxidation and corrosion of combustion facilities, thereby prolonging the service life. .

Hereinafter, a preferred embodiment according to the present invention will be described in more detail.

Prior to the description of the present invention, the following specific structure or functional descriptions are exemplified only for the purpose of describing embodiments according to the concept of the present invention, and embodiments according to the concept of the present invention may be implemented in various forms, It should not be construed as being limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can apply various changes and have various forms, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention. .

The eco-friendly combustible material combustion power improver according to the present invention is used in the form of spraying when burning in an incinerator, and based on 100 ml of water, ferrous sulfate (FeSO ₄ .7H ₂ O) and sodium-citrate (Na-citrate:Na 15 g of a mixture in which ₃ C ₆ H ₅ O ₇ ) was mixed in a weight ratio of 1:3; 10 g of ammonia sulfate; 5.0 ml of methanol; 2.5 g of red mercury(II) oxide; 1.5 g of ethylenediaminetetraacetic acid (EDTA); 2.5 g of borax; It consists of 2.5 g of sodium hydroxide and 2.5 g of triethanol amine.

In this case, the ferrous sulfate (FeSO ₄ .7H ₂ O) pH adjusting agent is a weak base according to the pH of the catalyst composition controlled to the area (7-9). Since the pH upon dissolution is high compared to the nitrate or hydrochloride salt (Na ₂ CO _3, K ₂ HPO ₄ , KH ₂ PO _4, etc.) can be minimized, and sodium-citrate (Na-citrate:Na ₃ C ₆ H ₅ O ₇ ) is added for complex formation.

Thus, iron-citrate chelate compounds are generated to enhance desulfurization performance during combustion, thereby suppressing the generation of residues and debris.

In addition, the present invention has one feature to prevent corrosion of the combustion facility by converting KCl into Alkali Sulphate or HCl having less corrosiveness by adding sulfur/sulfate in an incinerator as a combustion facility.

This is because sulfur or sulfate, especially ammonia sulfate, is injected at a specific point in the combustion facility, and thus KCl is decomposed and converted into HCl through the following chemical reaction inside the combustion facility.

(Reaction Scheme)

Ammonium sulphate(AS): Direct decomposition into SO ₃

(NH ₄ ) ₂ SO ₄ → 2NH ₃ + SO ₃ + H ₂ O

Sulfur: Oxidation from S to SO ₂ and SO ₃

SO ₂ + ½ O ₂ ↔ SO ₃

Sulphation of gaseous KCl from SO ₃

2KCl + SO ₃ + H ₂ O → K ₂ SO ₄ + 2HCl

In addition, methanol (CH ₃ OH) is added to suppress the generation of harmful gases by removing NO and NO ₂ by generating HO ₂ , OH, H, O radicals in the combustion gas as follows.

CH ₃ OH + OHㆍ → CH ₂ OHㆍ + H ₂ O

CH ₂ OHㆍ + M → CH ₂ O + Hㆍ + M

CH ₂ OHㆍ + O ₂ → CH ₂ O + HO ₂ ㆍ

Hㆍ + O ₂ → OHㆍ + Oㆍ

Oㆍ + H ₂ O → 2OHㆍ

In addition, it was confirmed whether there is a change in the removal rate of NO and NO ₂ according to the injection temperature of the reducing agent compared to the case of using urea, which is a reducing agent mainly used in the past.

In addition, red mercury oxide (II) is decomposed into mercury and oxygen as it is burned and contributes to promoting combustion of the generated oxygen.

However, since it is decomposed by combustion to generate mercury, it is preferable to immediately dissociate the mercury generated after the combustion reaction by adding a certain amount of EDTA, which is a chelating agent.

At this time, ethylenediaminetetraacetic acid (EDTA) can simultaneously coordinate at the six vertices of the octahedron centered on the metal ion, and as a result, the central metal is surrounded by the ligand. Thus, EDTA has a strong affinity for certain metal ions, exists as white crystals or powders, and is very suitable for dissociating mercury.

In addition, borax decomposes as the combustion temperature increases, releasing oxygen to facilitate combustion, thereby helping to completely burn organic matter that is incompletely burned.

In addition, sodium hydroxide is added to prevent precipitation during water dispersion, and triethanol amine is added to maintain the uniform dispersibility of the composition and prevent corrosion (from pH 12 to 13.8).

In addition, in the present invention, a solution in which a bromo selenium complex salt is dissolved in an aqueous solution of cesium ammonium nitrate (Ce(NH ₄ ) ₂ (NO ₃ ) ₆ ) is dissolved in an aqueous solution of 25 m to increase the combustion efficiency, that is, combustion power by promoting oxygen generation. In addition to, an eco-friendly combustible material combustion power improving agent can be further formed.

Here, the bromo selenium complex salt refers to a bromo complex salt of selenium as a compound of tetravalent selenium, and the bromo selenium complex salt is dissolved in an aqueous solution of ammonium cesium nitrate to accelerate oxygen in the combustion environment.

In addition, in the present invention, 6-bromohexanoic acid (94g) is added to chlorobenzene (100ml) and mixed to increase combustion efficiency, that is, combustion power by promoting oxygen generation, followed by nitrogen atmosphere. Heated at 110-120° C. for 24 hours, then cooled at room temperature, and 15 g of powder obtained by adding ethyl acetate (50 ml) may be further added to 100 ml of water to further constitute an eco-friendly combustible material combustion power improver.

In addition, since the powder also performs a heating catalyst function, the combustion power of the incinerator is further enhanced.

Hereinafter, examples will be described.

[Example 1]

15 g of a mixture of ferrous sulfate (FeSO ₄ .7H ₂ O) and sodium-citrate (Na-citrate:Na ₃ C ₆ H ₅ O ₇ ) in a weight ratio of 1:3 based on 100 ml of water; 10 g of ammonia sulfate; 5.0 ml of methanol; 2.5 g of red mercury oxide (II), 1.5 g of ethylenediaminetetraacetic acid (EDTA); 2.5 g of borax; An eco-friendly combustible material combustion power improver was prepared by comprising 2.5 g of sodium hydroxide and 2.5 g of triethanol amine.

[Example 2]

In order to compare the stability of the iron chelate compound provided in Example 1 with the stability of the iron chelate compound using conventional EDTA, a catalyst solution using EDTA instead of citric acid was prepared.

EDTA chelate catalyst solution is Fe(NO ₃ ) ₃ ^. 5.15 g of 9H ₂ O (404.44 g/mol, 98%) was dissolved in 500 mL of distilled water and Na-4-EDTA ^. 6.85 g of 4H ₂ O (452.24, 99%) was added and dissolved.

The pH of the solution was adjusted to 8.5 while adding Na ₂ CO ₃ powder in small portions, and then distilled water was added to make the total amount of the solution 1000 mL to prepare a catalyst solution.

[Example 2]

In Example 1, 25 m of a solution in which a bromo selenium complex salt was dissolved in an aqueous solution of cesium nitrate (Ce(NH ₄ ) ₂ (NO ₃ ) ₆ ) was added to 100 ml of water.

[Example 3]

In Example 1, 6-bromohexanoic acid (94 g) was added to 100 ml of water, mixed with chlorobenzene (100 ml), and heated at 110-120° C. for 24 hours in a nitrogen atmosphere, and then at room temperature. After cooling at, ethyl acetate (50 ml) was added, and 15 g of the obtained powder was further added.

Then, while burning MTB (household waste) in a model incinerator (1/10 the size of an actual incinerator), experiments were conducted with a long term for each of the combustion power improvers of Examples 1,2,3.

First, it was examined whether the combustion efficiency was improved when using Examples 1, 2 and 3.

When comparing before and after the use of the combustion power improver, the combustion temperatures when using Examples 1, 2, and 3 differ according to the change in the surrounding environment of the combustion chamber, but were measured higher by 3%, 5%, and 6.5%, respectively, , In other experimental examples, it was measured higher by 10%, 15% and 17.5%, respectively.

Although there is a difference in the measured results for each experimental example, it was confirmed that there is a certain effect in improving or improving the combustion power.

In addition, as a result of checking whether there is a resolution of KCL through spectral analysis, it was confirmed that Fe(CN) ₆ ^3- was formed. Through this, it was found that there is a resolution of KCL, so that a reduction effect can be obtained.

In addition, as a result of measuring the concentration of NOx during the initial start-up and shutdown of the incinerator, it was confirmed that the concentration decreased significantly, and it was confirmed that the concentration was significantly reduced to the extent that it was mistaken that no yellow smoke was generated.

As another example, in the material of each of the above examples, water 58 to 90% by weight, sodium borate hydrate 4 to 22% by weight, sodium hydroxide 10 to 25% by weight, amine series 3 to 5% by weight, hydrogen peroxide or substitute material 1 Any one selected from among 3% by weight, or any one or more selected, may be further included, or all may be further included. On the other hand, water 58 to 90% by weight, sodium borate hydrate 4 to 22% by weight, sodium hydroxide 10 to 25% by weight, amine series 3 to 5% by weight, hydrogen peroxide or alternative material 1 to 3% by weight may be included. Is very natural.

That is, it was confirmed that eco-friendliness can be secured by using the above configuration.

Claims (3)

In the environment-friendly combustible material combustion power improving agent used in the form of spraying during combustion in an incinerator;
The eco-friendly combustible material combustion power improver based on 100 ml of water,
15 g of a mixture of ferrous sulfate (FeSO ₄ .7H ₂ O) and sodium-citrate (Na-citrate:Na ₃ C ₆ H ₅ O ₇ ) in a weight ratio of 1:3;
10 g of ammonia sulfate;
5.0 ml of methanol;
2.5 g of red mercury(II) oxide;
1.5 g of ethylenediaminetetraacetic acid (EDTA);
2.5 g of borax;
2.5 g sodium hydroxide; And
An eco-friendly combustible material combustion power improver, characterized in that composed of 2.5 g of triethanol amine.
The method according to claim 1,
The eco-friendly combustible material combustion power improver is an eco-friendly combustible material, characterized in that the bromo selenium complex salt is formed by adding 25 m of a solution dissolved in an aqueous solution of cesium nitrate (Ce (NH ₄ ) ₂ (NO ₃ ) ₆ ) to 100 ml of water. Combustion enhancer.
The method according to claim 2,
The environmentally friendly combustible material combustion power enhancer is 6-bromohexanoic acid (94g) added to chlorobenzene (100ml), mixed, heated at 110-120°C for 24 hours in a nitrogen atmosphere, and then at room temperature. An eco-friendly combustible material combustion power improving agent, characterized in that formed by further adding 15 g of powder obtained by cooling at and adding ethyl acetate (50 ml) to 100 ml of water.