WO2013103234A1 - Fuel additive composition containing liquid crystal state of borate ions, and preparation method thereof - Google Patents

Abstract

The present invention provides a fuel additive composition having a low temperature combustion function, containing a liquid crystal state of borate ions, wherein the fuel additive composition is added to a fuel used as a combustion heat source in a furnace of a combustion engine to enable retardation of the initial combustion of fuel so as to induce low temperature combustion during a combustion process of fuel in various furnaces, prevention of slagging in a furnace, and promotion of denitrification and desulfurization effects.

Description

Combustion additive composition containing borate ion in liquid crystal state, and its manufacturing method

The present invention relates to a combustion additive composition having low temperature combustion, desulfurization and slagging reduction functions using borate ions in a liquid crystal state, and more particularly, to delay the initial combustion of fuel during combustion by fuel in various furnaces. The present invention relates to a combustion additive composition comprising borate ions in a liquid crystal state capable of inducing low-temperature combustion and preventing slagging in the furnace, as well as promoting denitrification and desulfurization effects.

In general, combustion engines containing various boilers such as fluidized bed boilers and PC boilers, as well as sinter furnaces, are fueled with ash containing fossil fuels (e.g. coal, coke, oil, etc.) or fuels containing ash such as biomass. use.

However, over time, constant temperature control becomes difficult due to changes in operating conditions. As a result, the furnace temperature rises, and if it exceeds the designed temperature range when the boiler is made, it leads to boiler accidents such as tube rupture, and also increases various environmental pollutants.

In order to reduce this accident, current methods of reducing the temperature in the furnace are to infiltrate steam warmed up to about 500 ° C or general industrial water or reduce fuel by reducing fuel.

However, the use of heated steam not only reduces the heat loss required to heat up to 500 ° C, but also reduces steam and electricity production, while increasing the cost of treating the air pollutants SO _x and NO _x .

In addition, when a fuel containing ash is added to a furnace as a combustion engine and a combustion operation is performed, the temperature in the furnace rises partially or entirely to form a high temperature, which causes slagging (names including Clinker and Fouling). There is a problem that interferes with the heat transfer of the furnace and the overall operation of the furnace.

In order to solve this problem, the soot and clinker of the furnace can be removed mainly by physical means and devices such as soot-blowers and iron rods. Thresholds occur.

As another method, there is a method of controlling the occurrence of slagging by adding a separate additive that forms a high melting point, such as magnesium oxide, into a furnace or by introducing a highly expandable silicic acid salt into the furnace.

However, when using only magnesium oxide, it is difficult to overcome the quantitative limitation in raising the melting point of the ash or inducing the expansion, and in the case of using a silicic acid salt, the viscosity is high and the slab is maintained at a high temperature of about 1300 ° C. for a long time. There is a problem that causes side effects that cause ging.

On the other hand, the combustion engine is actively contacted with fuel and oxygen at the beginning of combustion to form higher than the overall average temperature in the furnace, so that the ash is exposed for a long time at a high temperature above the melting point, so that the ash is melted and slaked around the burner. There is a problem that logging (Slagging, Clinker, Fouling) occurs.

In addition, the molten ash is blown away by the high temperature during the initial combustion of the combustion engine is attached to the components of the tube and the heater portion in the furnace to form a fouling, as well as wear or corrosion of the tube.

In addition, sulfuric acid gas or nitrate gas is generated when combustion is performed in a combustion engine. In the related art, limestone or the like is used for desulfurization or denitrification, but this lowers the melting point of ash and causes second slagging. have.

The present invention is to solve the problems of the prior art as described above, the addition of the composition of the ionic and liquid crystallized borate component to the fuel of the combustion engine (sinter furnace, boiler, etc.), the simple borate salt mixed with other materials It is differentiated from the existing patent No. 0544568 (fuel additive with improved combustion efficiency) which is a fuel additive composition using a dissolved state.

In the present invention, borates (eg, borax) are added in a liquid crystalized state to delay combustion by shielding the contact between oxygen and fuel in a section in which fuel and oxygen are actively contacted at the beginning of combustion. In particular, it is possible to induce low-temperature combustion of the initial combustion section, to equalize the combustion temperature evenly during the operation in which the combustion proceeds, to prevent the occurrence of slagging in the furnace during combustion, and to achieve the effects of desulfurization and denitrification.

In addition, the present invention prevents the increase in temperature in the furnace of the combustion engine to prevent thermal stress and abrasion or corrosion of components such as tubes (the higher the temperature of the furnace, the higher the tube of the combustion apparatus). Thermal shock and corrosion wear, etc.), and prevent the ash from melting for a long time by preventing it from being exposed to high temperatures, so that the unmelted ash is entangled with the melted ash, and a part of the ash is attached to a component such as a tube or a heater of the combustion engine. The phenomenon can be prevented.

In addition, the liquid crystal borate can form a hard FeB layer on the surface of the tube for a long time to further improve the corrosion and wear protection effect.

In order to achieve the above technical problem, the present invention provides a combustion additive composition comprising a borate ion in the liquid crystal (Liquid crystal) state.

In another aspect of the present invention, an alkali metal based borate hydrate, an alkali metal based hydroxide, and water are mixed to provide an ionizing and liquid crystallizing method of the alkali metal based borate hydrate.

According to the combustion additive composition having a low-temperature combustion function using the liquid crystal borate ion according to the present invention, since the composition of the borate ion is added as an additive in the fuel or the furnace, the low-temperature combustion of the fuel is induced while the initial combustion of the fuel is delayed. As the fuel is not burned at a lower temperature than the initial combustion temperature, the combustion temperature caused by the fuel during the combustion operation can be evenly averaged and averaged.

In addition, by preventing the melting of ash during combustion, the ash that is not melted is mixed with molten ash (Clinker, Fouling) to soften the molten ash, thereby exerting the function of easily removing clinker or fouling fused to the tube in the furnace. It is possible to prevent the temperature rise of the combustion engine and maximize the thermal efficiency of the combustion engine.

In addition, it is possible to suppress the decomposition of sulfides in the fuel or the generation of NO _x (particularly, Thermal NO _x ) in the combustion engine during combustion, thereby naturally providing the effect of desulfurization and denitrification.

In addition, since it prevents thermal stress, wear, and corrosion of components of the combustion engine in advance, there is an effect of extending the life of the combustion engine. Meanwhile, when the liquid crystal borate composition is used for a long time, a hard FeB layer may be formed on the surface of the tube to provide corrosion and wear protection.

In particular, in the case of the PC boiler, it is effective to prevent and remove the slag formed around the burner, and in the case of the fluidized bed boiler, the slag formed in the air nozzle area.

Hereinafter, the present invention will be described in detail.

The combustion additive composition of the present invention includes a borate ion in a liquid crystal state. Specifically, the present invention is to be added to the fuel and / or furnace used as a heat source in the furnace of the combustion engine, the ionized and liquid crystallized borate is applied to the additive composition to induce low-temperature combustion during the initial combustion.

The borate ions in the liquid crystal state induce low temperature combustion in the initial combustion section of the combustion engine. That is, when the fuel is heated from the combustion engine, water molecules are released from the borate ion compound to induce an endothermic reaction due to latent heat, and gradually the boron ion composition in the liquid crystal state becomes weak at high temperature and becomes weak in viscosity. By containing an extremely thin film close to water 'and evaporating to shield the contact between fuel and oxygen, combustion delay and temperature reduction functions are superior to those of simple borate salts.

In particular, the borate ions in the liquid crystal state of the present invention and the (liquid) liquid crystal composition suppress the formation of trioxide (SO ₂ + O = SO ₃ ) produced by a high temperature flame, and ammonium sulfate ( Reduce the production of fouling).

The kind of the borate ion is not particularly limited, but it is particularly preferable that it is a pentaborate ion or a tetraborate ion. In addition, the borate ion is more preferable when hydrates such as Tindal, Tincalconite, Keratin, Zincborate, borax are ionized. Furthermore, borate ions of alkaline earth metal (Mg, Ca, etc.) series are even more preferable.

In one embodiment, the borate ions are _{B (OH) 3, B (} OH) 4 -, B 5 O 6 (OH) 4 -, B 3 O 3 (OH) 4 -, B 4 O 5 (OH) 4 ^At least one selected from ^-2 and B ₃ O ₃ (OH) ₅ ^-2 , for example, B (OH) ₃ .

In particular, borate salts such as sodium metaborate tetrahydrate, Sporgite, Pentaborate, Ameghinite, Borax, Tincalconite, Inderite, Inyoite, Meyerhofferite, Kurnakovite are ionized to water and alkali metal hydroxides (e.g., NaOH, KOH, LiOH), or hydrochloric acid, nitric acid. possible one, are ionized in water by alkali metal hydrate or hydrochloric acid, B (OH) at _{pH 9.5 ~ 13.5 3, B (} OH) 4 -, B 5 O 6 (OH) 4 -, B 3 O 3 (OH) 4 ^- , B ₄ O ₅ (OH) ₄ ^-2 , B ₃ O ₃ (OH) ₅ ^-2 and the like in the liquid crystal state to have an optimum effect.

The borate ions induce low-temperature combustion in the initial combustion section of the combustion engine by crystallizing various kinds of elements, boron elements and water molecules, but the borate ions present in the liquid liquid in the liquid crystal state according to the present invention has a more excellent effect Exert.

In a preferred embodiment, the combustion additive composition of the present invention comprises at least one alkali metal ion selected from Na ⁺ , K ⁺ and Li ⁺ ; OH ^-; And H ₂ O may be further included. That is, the present invention may further include an alkali metal-based compound or ions to be added to the fuel together with the borate ions in the liquid crystal state to prevent incomplete combustion occurring in the latter half of the combustion.

It is preferable to mix alkali metal or alkaline earth compounds or ions rather than only borate ions to compensate for the disadvantage that the borate ions are reduced in exposure to high temperatures (incomplete combustion and CO gas increase or borate melting). In particular, in the present invention, by using the ionized and liquidated borate ion composition instead of conventional borate ions, slagging and clinker and fouling reduction, as well as desulfurization and denitrification effect is greatly improved.

The alkali metal compounds include sodium carbonate, potassium carbonate, sodium hydroxide, potassium hydroxide, sodium phosphate (Na ₃ PO ₄ , Na ₂ PO _4, etc.) and potassium phosphate (K ₃ PO ₄ · 3H ₂ O, K ₂ PO ₄ , KY ₂ PO _4, etc.) may be one or more metal compounds selected from the group consisting of.

Alkali metal-based compounds or ions used together with liquid carbonate borate ions promote combustion after mid-combustion while further lowering the initial combustion temperature along with the initial combustion retardation of the liquid crystalline borate ions. Alkali metal series with OH is a function of OH's stabilizing function (Radical Trap) and "H + OH → H 2 O" to interfere with fuel and oxygen contact and to promote combustion after mid-combustion.

In addition, the carbonate-based alkali metal compound generates combustion CO ₂ at an early stage, delays the initial combustion and promotes combustion by the alkali metal after mid. Phosphoric acid-based alkali metal compound forms a carbonized film with Radical Trap or the like to delay the initial combustion of the fuel and promote the post-middle combustion by the alkali metal.

In one embodiment, the use ratio of the alkali metal compound is 500 ~ 1500: 1 to the fuel weight after mixing in a weight ratio of "borate ion: magnesium compound: alkali compound = 45:40:12" by weight It is preferable to use the ratio of. However, this ratio may be applied differently depending on the fuel and furnace temperature conditions.

In addition, if less slagging is formed, it may be used in a ratio of "borate ion: alkali metal compound = 70:30" in approximately parts by weight by applying only an alkali metal compound to the borate ion. However, this ratio is also not fixed and may be applied differently according to fuel quality and operating conditions (load, etc.).

When making an ionized liquid phase using a liquid such as water, for example, a borate such as tincal of 10-hydrate tincal is mixed with potassium hydroxide (concentration of about 25 W%) in a ratio of about 'borate: potassium hydroxide = 45:50' to the weight of borate. In order to 'ionize and liquefy' the mixture containing water (about 4 times the weight-based borate), agitating for 2 ~ 3 hours at the temperature of 96 ~ 100 ℃ and pH 13 ± 0.8 .

In another preferred embodiment, the combustion additive composition of the present invention may further comprise at least one selected from ionized magnesium oxide, magnesium hydroxide, magnesium carbonate and magnesium phosphate. That is, the present invention is to add to the fuel under the combustion conditions to form a high temperature in the combustion engine for a long time, the borate ion may further include a magnesium-based compound or ions.

For example, the magnesium-based compound is mixed with borate (ion) in a ratio of 50:50 by weight, and it is preferable to apply them in a ratio of 500 to 1500: 1 relative to the weight of the fuel. However, this mixing ratio can be added or decreased depending on the furnace temperature and the ash content of the fuel.

The liquid crystal borate ions including alkali metals may be exposed to high temperatures for a long time in the combustion conditions in which high temperatures are formed for a long time, thereby degrading the anti-slag function, which is supplemented by the magnesium-based compound.

Borate and magnesium-based compounds other than the alkali metal series may be used as a solid, but are preferably used after being ionized to nitric acid or hydrochloric acid and mixed with borate ions.

In addition, the combustion additive composition of the present invention may further include zincborate or ionized Zincborate in addition to borate ions (and alkali metal compounds, magnesium-based compounds) in the liquid crystal state.

The combustion additive composition of the present invention may be used in the form of a slurry for convenience, but is most preferably used in an ionized and liquidized "liquid" form. This also gives the ability to enlarge the specific surface area of the composition relative to the fuel.

The combustion additive composition of the present invention may be mixed with a liquid such as water and then mixed with a fuel, but may be used together with the fuel in the combustion engine, or may be directly injected into or combusted in the combustion engine. That is, it is possible to mix and use beforehand before putting into a combustion engine, and can also mix and spray a composition, or to inject directly into the fuel or ash injected into a combustion engine, while fuel is injected into a combustion engine. At this time, the mixing degree of water is an amount of 3 to 15 times, more preferably 5 to 7 times the weight of the borate ions or the composition. In addition, when further mixing the water, the preferred pH level is about 9.3 to 13. However, this can be changed according to the fuel and furnace operating conditions.

As described above, the combustion additive composition of the present invention includes borate ions in a liquid crystal state, thereby effectively performing at least one or more of low temperature combustion induction, slagging reduction, SO _x reduction, and NO _x reduction in the initial combustion section. Can be.

According to another aspect of the present invention, ionizing and liquidating the alkali metal-based borate hydrate by mixing alkali metal-based borate hydrate, alkali metal-based hydroxide (eg, at least one selected from NaOH, KOH, and LiOH) and water Characterized in that, there is provided a method for producing a combustion additive composition.

The alkali metal borate hydrate is present with Na ⁺ , K ⁺ , Li ⁺ , OH ⁻ and the like after being ionized in water. On the other hand, the optimum pH for forming the liquid crystal by NaOH, KOH, LiOH, etc. in the manufacturing process is 13 ± 0.8 and the optimum temperature is 96 ~ 100 ℃.

The alkali metal borate is a liquid crystal without mixing or partially or totally dissolved with organic materials such as propylene glycol, ethylene glycol or glycerol, sorbitol, or ethanolamine having cis-diols, and low temperature function. Almost no effect. (See `` Production Example 7 '', `` Table 7 '' and `` Table 8 '' below.)

In one embodiment, the alkali metal-based borate hydrate is at least one selected from tindal, tincalconite, keratin, zincborate, borax, sodium metaborate tetrahydrate, sporgite, pentaborate, ameghinite, inderite, inyoite, meyerhofferite and kurnakovite, for example borax In this case, B (OH) ₃ , specifically 4B (OH) _3, is formed as the borate ion in the liquid crystal state.

Specifically, in the case of borax, generally water or the like _{'B 5 O 6 (OH)} 4 -' with but minimal to ionize the case of the present invention, by NaOH and / or _{KOH "Na 2 B 4 O 7} · 10H 2 O + 7H ₂ O + 2NaOH (or KOH) → 4Na (or ^{2Na + 2K) + + 4OH -} + 4B (OH) have a reaction, such as a _{3 + 10H 2 O ", Na} 2 B 4 O 7 · 10H 2 O is 4B (OH) ₃ , the molecular scale liquid crystal, grows to nanoscale and larger transparent liquid crystals. Whether it is a liquid crystal having a molecular scale, nano scale scale, or more, the effect of the present invention is not significantly different. All of them also grow into transparent crystals when dried.

In one embodiment, the combustion additive composition of the present invention may be prepared by mixing 17.5 to 25 parts by weight of an alkali metal borate hydrate and 3.7 to 7.4 parts by weight of an alkali metal hydroxide based on 100 parts by weight of water. More specifically, preferred liquid crystallization is achieved under the ratio of 81 parts by weight of water, 3 to 6 parts by weight of NaOH, and 14 to 20 parts by weight of borax.

In another embodiment, the present invention may include the step of mixing the alkali metal-based borate hydrate, alkali metal-based hydroxide and water in the production of the combustion additive composition, and then cooling the mixture. Specifically, in the present invention, growth of the crystal (liquid crystal) by mass transfer may be continued while cooling from 96 to 100 ° C to 0 ° C.

Hereinafter, the combustion state of the combustion (fuel) additive composition including the borate ion in the liquid crystal state according to the present invention was tested through the examples before and after the addition, respectively, to measure the temperature change and the emission of pollutants in the combustion engine. .

However, embodiments of the present invention may be modified in many different forms, the scope of the present invention is not limited to the embodiments described below. Embodiment of the present invention is provided to explain to those skilled in the art to understand the present invention.

Preparation Example 1 was carried out by mixing only water with borate

A 250MWh PC boiler was used as the combustion engine, and coal (IDT: 1330 ℃) was supplied as fuel. Coal and borate (5 borate: KB ₅ O ₇ · 4H ₂ O by weight) was applied using the same equipment and fuel. ) Was mixed at 500: 1 and evaluated before and after addition, respectively. The evaluation results are shown in Table 1 below.

Table 1 Borate + water

division		Before addition	After addition	Change	% Change
Temperature change (℃)	Initial temperature	1350	1310	-40	-3.0
	Mid temperature	1300	1320	20	1.5
Contaminants (ppm)	SOx	180	152	-28	-15.6
	NOx	165	141	-24	-14.5
	SO 3	17	12	-5	-29.4

(* Also SO _x in a general sense only to the SO ₂ SO ₂ in bar, the present invention for measuring the recording.)

Preparation Example 2 further includes a magnesium-based compound and an alkali metal compound in borate

We use 250Mew class PC boiler as the combustion engine and apply the same conditions, equipment and fuel to supply coal (IDT: 1322 ℃) as fuel. “Borate Tincalconite (Na ₂ B ₄ O ₇ · 5H ₂ O): Oxidation Magnesium: Sodium carbonate = 45:30:25 ”The additive composition mixed in a weight ratio of about 5 times the water in a slurry type, and then the composition containing water to the ratio of 400: 1 to the weight of coal (water Ratio), and before and after addition, respectively, were measured and evaluated. The evaluation results are shown in Table 2 below.

TABLE 2 Borate + Magnesium Oxide + Sodium Carbonate

division		Before addition	After addition	Change	% Change
Temperature change (℃)	Initial temperature	1350	1281	-69	-5.1
	Mid temperature	1300	1321	21	1.6
Contaminants (ppm)	SOx	180	134	-46	-25.6
	NOx	165	127	-38	-23.0
	SO 3	17	9	-8	-47.1
	CO	45	25	-20	-44.4

Preparation Example 3 further includes an alkali metal-based compound to deepen the combustion delay in the borate and prevent incomplete combustion occurring at a later stage.

The combustion engine was tested in a boiler using a Chinese ash coal (IDT: about 1180 ℃, ash content of about 10W%) with low melting point and high volatile matter as a steam boiler of 150ton / hr. "Tincal: Potassium hydroxide = 45:55" in a ratio of 5 times by weight of water mixed by weight to make a liquid-free liquid phase state using a spray device at a ratio of 500: 1 to the weight of the fuel The coal was fed into the coal above the coal transport feeder installed before the mill to grind the coal.

TABLE 3 Borate + Potassium Hydroxide

division		Before addition	After addition	Change	% Change
Temperature change (℃)	Initial temperature	1350	1292	-58	-4.3
	Mid temperature	1300	1325	25	1.9
Contaminants (ppm)	SOx	180	123	-57	-31.7
	NOx	165	121	-44	-26.7
	SO 3	17	10	-7	-41.2
	CO	45	29	-16	-35.6

Through Preparation Examples 1 to 3, the effects of 'borate', 'borate ion mixed with an alkali metal or magnesium compound' and 'ion and liquid crystallized borate ion composition' according to the present invention were compared and explained. As can be seen in Table 1, Table 2 and Table 3, the initial temperature reduction effect is 2.1%, 1.3%, respectively, when the magnesium compound and the alkali or the alkali is mixed with borate ions rather than using only borate only It was further enhanced.

Preparation Examples 4, 5 and 6 and Tables 4, 5 and 6 below were carried out by ionizing and liquidifying the respective compositions under the same coal and the same conditions as in the respective Preparation Examples 1, 2 and 3 above. The result proves that the effect of ionization and liquid crystallization is excellent.

Preparation Example 4 (for comparison with Preparation Example 1)

The composition sample prepared after ionization and liquid crystallization of pentaborate (KB ₅ O ₇ 4H ₂ O) and potassium hydroxide (25W%) at a ratio of 21:23 with respect to 100 by weight of water was used. Applied at a ratio of 200: 5: 1 '. In the ionization method, 6 g of potassium hydroxide was mixed with 100 g of water in a reactor, and heated to 100 ° C. at a pH of 13.5, followed by heating and agitating for 5 hours in a ratio of 21 g of a fluoroborate. It was then naturally cooled to 25 ° C. through a cooling system.

After 1 month of testing, the formed FeB was observed on the surface of the tube through SEM and elemental analysis. It was confirmed that fouling of ammonium sulfate was not formed in the air preheater.

Table 4 After liquid crystallization (5-borate + potassium hydroxide)

division		Before addition	After addition	Change	% Change
Temperature change (℃)	Initial temperature	1350	1255	-95	-7.1
	Mid temperature	1300	1315	15	1.2
Contaminants (ppm)	SOx	180	20	-160	-88.9
	NOx	165	22	-143	-86.7
	SO 3	17	6	-11	-64.7

In Preparation Example 1 and Preparation Example 4, the slagging of the bottom ash (Slagging) was collected and compared, there was a difference as shown in Figure 1 below. That is, the effect in the case of ionization and liquid crystallization was excellent.

[Revision 16.01.2013 under Rule 91]
<Slagging comparison>

[Revision 16.01.2013 under Rule 91]
Before addition: specific gravity 2.813
Borate (Manufacturing Example 1): Specific gravity 2.456
Liquidated Borate (Preparation 4): Specific Gravity 1.763

Preparation Example 5 (for comparison with Preparation Example 2)

Composition containing ions and liquid crystalline borate salts at pH 13.0 at a ratio of “Tincal: potassium hydroxide (35 W% concentration liquid) = 45: 45” (borate ion Tincalconite: magnesium oxide: sodium carbonate = 45: 30) 25) was applied as the ratio of coal: water: composition = 500: 5: 1 to the weight of coal.

Table 5 After liquefaction, “Tincalconite: Magnesium Oxide: Sodium Carbonate”

division		Before addition	After addition	Change	% Change
Temperature change (℃)	Initial temperature	1350	1265	-85	-6.3
	Mid temperature	1300	1311	11	0.8
Contaminants (ppm)	SOx	180	19	-161	-89.4
	NOx	165	17	-148	-89.7
	SO 3	17	3	-14	-82.4
	CO	45	18	-27	-60.0

Preparation Example 6 (for comparison with Preparation Example 3)

“Tincal is ionized and liquefied by the same method as Preparation Example 4 in the ratio of 'water: borate: potassium hydroxide aqueous solution (25W%) = 100: 23: 17', and the composition sample prepared by weight of 'coal: Water: composition = 500: 2: 1 '.

Table 6 After liquidation (tincal + potassium hydroxide)

division		Before addition	After addition	Change	% Change
Temperature change (℃)	Initial temperature	1350	1255	-95	-7.0
	Mid temperature	1300	1310	10	0.8
Contaminants (ppm)	SOx	180	18	-162	-90.0
	NOx	165	18	-147	-89.1
	SO 3	17	4	-13	-76.5
	CO	45	14	-31	-68.9

As shown in Table 4, Table 5 and Table 6, the initial temperature reduction function is 2.6%, 3.3%, 4.0% more enhanced than when using only the borate when the composition containing the borate liquid crystal. In addition, the shape and variation of SO _x , NO _x , SO ₃ , CO, and slagging were much better than those of borate alone.

In particular, as shown in Table 6, in the case of Preparation Example 6, the effect is superior to the case of using only borate, SO _x is 90%, NO _x is 89.1%, SO ₃ is 76.5%, CO is 68.9% in TMS value Decreased.

On the other hand, in the case of a composition containing borate ions in the liquid crystal state than the mixture of the alkali metal or magnesium compound in the borate salts, the effect was further enhanced the Preparation Examples 2, 3, 4, 5 and 6 and Table 2, Table 3, Table 4 , Table 5 and Table 6 it was found by comparison.

Preparation Example 7

When 100 g of water and 17 g of borax were ionized and liquefied at a rate of 12 g of NaOH (concentration 25 W%), 20 g of borax and 60 g of ethylene glycol were dissolved, and then 50 g of water was diluted and compared under the same conditions as in Preparation Example 1. The test yielded the results shown in Table 7 below.

In addition, in the case of preparing a composition in which the borate was dissolved in the ratio of 60 g of ethanolamine under the same conditions as in Preparation Example 1, it was as shown in Table 8 below.

TABLE 7 After ionization (borate + sodium hydroxide / borate + ethylene glycol)

division		Before addition	Ionized with ethylene glycol			When liquidated with NaOH
			Temperature	Change	% Change	Temperature	Change	% Change
Temperature change (℃)	Initial temperature	1350	1317	-33	-2.5	1198	-152	-11.3
	Mid temperature	1300	1300	0	0.0	1287	-13	-1.0
Contaminants (ppm)	SOx	180	165	-15	-9.1	25	-155	-86.1
	NOx	165	164	-One	-0.6	9	-156	-94.5
	SO 3	17	15	-2	-13.3	4	-13	-76.5

Table 8 After ionization (borate + sodium hydroxide / borate + ethanolamine)

division		Before addition	Ionized with ethanolamine			When liquidated with NaOH
			Temperature	Change	% Change	Temperature	Change	% Change
Temperature change (℃)	Initial temperature	1350	1315	-35	-2.7	1198	-152	-11.3
	Mid temperature	1300	1300	0	0.0	1287	-13	-1.0
Contaminants (ppm)	SOx	180	170	-10	-5.9	25	-155	-86.1
	NOx	165	162	-3	-1.0	9	-156	-94.5
	SO 3	17	15	-2	-13.3	4	-13	-76.5

In the above, a preferred embodiment of a fuel additive composition having a low-temperature combustion function using a borate ion in a liquid crystal state according to the present invention with respect to coal fuel has been described, but the present invention is not limited thereto, and the claims and the details of the invention are described. It is possible to carry out various modifications within the scope of the description, which also belongs to the scope of the invention is obvious.

Claims (17)

1. Combustion additive composition comprising a borate ion in the liquid crystal (Liquid crystal) state.
2. The method of claim 1,

   The borate ion is a combustion additive composition, characterized in that the pentaborate or tetraborate ion.
3. The method of claim 1,

   The borate ion is _{B (OH) 3, B (} OH) 4 -, B 5 O 6 (OH) 4 -, B 3 O 3 (OH) 4 -, B 4 O 5 (OH) 4 -2 and B ₃ Combustion additive composition, characterized in that at least one selected from O ₃ (OH) ₅ ^-2 .
4. The method of claim 3,

   The borate ion is a combustion additive composition, characterized in that B (OH) ₃ .
5. The method of claim 1,

   At least one alkali metal ion selected from Na ⁺ , K ⁺ and Li ⁺ ; OH ^-; And H ₂ O.
6. The method of claim 1,

   Combustion additive composition, characterized in that it further comprises at least one selected from ionized magnesium oxide, magnesium hydroxide, magnesium carbonate and magnesium phosphate.
7. The method of claim 1,

   Combustion additive composition characterized in that it further comprises Zincborate or ionized Zincborate.
8. The method of claim 1,

   Combustion additive composition, characterized in that the liquid form.
9. The method according to any one of claims 1 to 8,

   Combustion additive composition characterized in that it has at least one function of low temperature combustion induction, slagging reduction, SO _x reduction, and NO _x reduction of the initial combustion section.
10. A method for producing a combustion additive composition, characterized in that the alkali metal series borate hydrate is ionized and liquid crystalized by mixing an alkali metal series borate hydrate, an alkali metal series hydroxide and water.
11. The method of claim 10,

    The alkali metal-based borate hydrate is a method of producing a combustion additive composition, characterized in that at least one selected from tindal, tincalconite, keratin, zincborate, borax, sodium metaborate tetrahydrate, sporgite, pentaborate, ameghinite, inderite, inyoite, meyerhofferite and kurnakovite. .
12. The method of claim 11,

    The alkali metal-based borate hydrate is a method for producing a combustion additive composition, characterized in that borax.
13. The method of claim 12,

    4B (OH) ₃ is formed as a borate ion in a liquid crystal state.
14. The method of claim 10,

    The alkali metal hydroxide is a method of producing a combustion additive composition, characterized in that at least one selected from NaOH, KOH and LiOH.
15. The method of claim 10,

    A method for producing a combustion additive composition comprising mixing 17.5 to 25 parts by weight of an alkali metal based borate hydrate and 3.7 to 7.4 parts by weight of an alkali metal hydroxide based on 100 parts by weight of water.
16. The method of claim 10,

    The ionization and liquid crystallization is a method of producing a combustion additive composition, characterized in that carried out under the conditions of temperature of 96 ~ 100 ℃ and pH 13 ± 0.8.
17. The method of claim 10,

    A method of producing a combustion additive composition, characterized by mixing an alkali metal-based borate hydrate, an alkali metal-based hydroxide, and water and then cooling the mixture.