KR101240549B1 - Combustion efficiency improver for coal - Google Patents

Abstract

PURPOSE: A combustion efficiency improvement agent for coal and a coal composition for fuel including the same are provided to reduce the required amount of coal for obtaining the same steam amount by enhancing the combustion efficiency of coal, to increase the thermal conductivity of a boiler which uses the coal as fuel by removing clinkers generated on an inner wall of the boiler, to extend the lifetime of the boiler by forming a protecting film, and to prevent the environmental pollution by reducing the amount of carbon monoxide, carbon dioxide, sulfur oxide, nitrogen oxide, unburned carbon, and etc. which are generated in the coal combustion. CONSTITUTION: A combustion efficiency improvement agent for coal comprises 39-70 weight% of ozonated water in which the amount of dissolved ozon is 100-200 ppm, 4-14 weight% of hydrogen peroxide, 0.0001-0.001 weight% of manganese compounds, 8-20 weight% of triethanolamine, 8-20 weight% of alkali metal compounds, and 8-20 weight% of borax. The combustion efficiency improvement agent for coal has the specific gravity of 1.147-1.157, and the pH of 12-13.5. The alkali metal compounds are at least one compound selected from sodium hydroxide, sodium carbonate, potassium hydroxide, potassium carbonate, and lithium hydroxide. The manganese compounds are at least one compound selected from manganese hydroxide and manganese dioxide. [Reference numerals] (AA) Start; (BB) End; (S10) Preparing water of 10ppb or less of impurities; (S20) Heating to 40-80°C; (S30) Dissolving borax; (S40) Dissolving an alkali metal compound; (S50) Cooling to 12-20°C; (S60) Adjusting the dissolved ozone of water to 100-200ppm by dissolving ozone; (S70) Dissolving hydrogen peroxide; (S80) Dissolving triethanol amine; (S90) Dissolving manganese dioxide

Description

Combustion Performance Enhancer for Coal {COMBUSTION EFFICIENCY IMPROVER FOR COAL}

The present invention relates to a combustion performance improving agent for coal and a method for producing the same.

Coal has been used for the longest time in fossil fuels, and its abundance is relatively new, as it is relatively rich, evenly distributed, and inexpensive compared to oil and natural gas. However, the rapid expansion of coal utilization in the short term is difficult because coal, which is a solid fuel, is relatively inferior in thermal efficiency and has a large amount of harmful gas emitted compared to liquid fuel, petroleum or natural gas, which is a gaseous fuel. That is, coal contains a small amount of volatile substances compared to petroleum, but contains a large amount of fixed carbon and ash such as silica, alumina, titania, etc. Can be.
In this regard, the fuel additive composition of the prior art document (Korean Publication No. 10-2009-0013115) relates to a fuel additive used for liquid fossil fuels, such as heating, industrial boiler oil, engine oil and regeneration oil of transportation machinery. Specifically, the combustion efficiency is improved by adding a fuel component that promotes combustion to fuel, inducing complete combustion, suppressing generation of impurities such as scale generated in the furnace, and greatly reducing generation of air pollutants. Disclosed are fuel additives that can be enhanced.

The problem to be solved by the present invention is to provide a combustion performance improving agent for coal not only to increase the combustion efficiency, but also to reduce the discharge of air pollutants to prevent environmental pollution.

Another object of the present invention is to provide a coal composition for fuel, which not only increases combustion efficiency, but also reduces air pollutants emitted to prevent environmental pollution.

Another object of the present invention is to provide a method for producing a combustion performance improving agent for coal, which not only increases combustion efficiency, but also reduces emissions of air pollutants, thereby preventing environmental pollution.

The problems to be solved by the present invention are not limited to the above-mentioned technical problems, and other technical problems which are not mentioned can be clearly understood by those skilled in the art from the following description.

Combustion performance improving agent for coal according to an embodiment of the present invention for solving the above problems includes ozone water, hydrogen peroxide, manganese compound, triethanolamine, alkali metal compound and borax having a dissolved ozone amount of 100-200 ppm.

Coal composition for fuel according to an embodiment of the present invention for solving the above problems, coal combustion performance improving agent containing ozone water, hydrogen peroxide, manganese compound, triethanolamine, alkali metal compound and borax having a dissolved ozone amount of 100-200ppm Including water and coal, the weight ratio of the combustion performance improving agent for coal, water and coal is 1: 2-9: 1000-3000.

In the method for preparing a combustion performance improving agent for coal according to an embodiment of the present invention for solving the above problems, preparing a water in which borax is dissolved and dissolved ozone in the water to the dissolved ozone amount of the water to 100-200ppm Adjusting.

The details of other embodiments are included in the detailed description and drawings.

According to embodiments of the present invention has at least the following effects.

That is, it is possible to reduce the amount of coal used to obtain the same amount of steam by increasing the combustion efficiency of coal.

In addition, by removing the clinker generated on the inner wall of the boiler using coal as fuel to increase the thermal conductivity of the boiler and to form a protective film it is possible to extend the life of the boiler.

In addition, the combustion performance improving agent for coal according to an embodiment of the present invention, it is possible to reduce the amount of carbon monoxide, carbon dioxide, sulfur oxides, nitrates, unburned carbon, etc. generated during coal combustion to prevent environmental pollution.

Combustion performance improving agent for coal according to an embodiment of the present invention can reduce the oil content in the dust to improve the efficiency of the dust collector and reduce the dust collector.

Combustion performance improving agent for coal according to an embodiment of the present invention, the fuel cost by reducing the coal fuel, the dust treatment cost, the carbon monoxide and carbon dioxide emission measures costs, the cost for removing the clinker, the cost of stopping the boiler to remove the clinker And can reduce the accompanying costs due to environmental improvement.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the present specification.

1 is a flow chart schematically showing a method for producing a combustion performance improving agent for coal according to an embodiment of the present invention.
2 is a graph comparing boiler efficiency before and after adding a coal combustion performance improving agent to coal in a power generation boiler of Experimental Example 1. FIG.
Figure 3 is a graph comparing the temperature change of the exhaust gas per hour before and after the injection of coal combustion performance improving agent to coal in the power generation boiler of Experimental Example 1.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. &Quot; and / or "include each and every combination of one or more of the mentioned items. ≪ RTI ID = 0.0 >

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms " comprises "and / or" comprising "used in the specification do not exclude the presence or addition of one or more other elements in addition to the stated element.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used in a sense that can be commonly understood by those skilled in the art. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

Hereinafter, a coal combustion performance improving agent according to an embodiment of the present invention will be described.

Combustion performance improving agent for coal according to an embodiment of the present invention includes ozone water, hydrogen peroxide, manganese compounds, triethanolamine, alkali metal compounds and borax having a dissolved ozone amount of 100-200 ppm.

Ozone water is used to supply additional oxygen in addition to atmospheric oxygen when burning coal. Ozone contained in ozone water may be decomposed into oxygen to assist in the complete combustion of coal, as shown in Reaction Formula (1) below. That is, ozone is decomposed to oxygen in the liquid combustion performance improver, and oxygen molecules in contact with or in close proximity to coal can react with coal quickly and easily oxidize fuel. Therefore, the higher the dissolved ozone amount of ozone water may be advantageous to the oxygen supply when burning coal.

2O ₃ → 3O ₂ ----------------- Scheme (1)

In general, high concentration ozone water of more than 100ppm is toxic and is considered to be difficult to handle. In addition, excess ozone gas is generated from the ozone water may have a harmful effect on the human body. Therefore, to date, high concentration ozone water of 100 ppm or more is used only in a semiconductor cleaning process or the like in a closed space so that ozone gas does not flow out.

However, under high temperature combustion conditions according to an embodiment of the present invention, since ozone in ozone water rapidly decomposes into oxygen and directly participates in combustion reaction, even when using high concentration ozone water of 100 ppm or more, harmful effects on the human body are minimized, and ozone gas Handling is easy, such as to prevent external leakage of oil. As such a high concentration of ozone water of 100ppm or more can be treated, the oxygen supply according to the reaction formula (1) can be more smoothly and further improve the combustion efficiency of coal.

On the other hand, high concentration of ozone water of 100ppm or more is not easy to manufacture in a normal environment. However, since the solubility of ozone is increased under a basic pH environment according to an embodiment of the present invention described below, a high concentration of ozone water of 100 ppm or more can be easily prepared.

On the other hand, when the dissolved ozone amount of ozone water is too large, the repulsive force between the ozone molecules in the ozone water becomes high, and ozone is easily released from the ozone water. Ozone gas released from the ozone water increases the pressure in the combustion performance enhancer container for coal, making it difficult to store and open the container. If the dissolved ozone amount of ozone water is 200 ppm or less, the above-mentioned disadvantages can be minimized, which can be advantageous for its handling.

Ozone contained in ozone water may be decomposed into oxygen through carbon atoms. The carbon atom may be derived from coal, for example. At this time, ozone reacts with the carbon atoms of coal as in the following reaction formulas (2) to (4). Oxygen generated in Scheme (2) can perform a function of increasing the combustion efficiency of coal by directly participating in the combustion reaction. Ozone is produced in Scheme (3), but the ozone produced here can be converted back to oxygen or carbon dioxide by the reaction of Schemes (2) to (4). As the overall cyclic reaction proceeds, ozone can react with carbon to produce carbon dioxide and oxygen. The reaction proceeds in a direction that reduces the number of moles of ozone, thereby preventing the outflow of ozone gas.

2O ₃ + 2C → 2CO ₂ + 0 ₂ ----------------- Scheme (2)

2O ₃ + C → CO ₂ + 20 ₃ ----------------- Scheme (3)

2O ₃ + C → 3CO ₂ + C ----------------- Scheme (4)

Furthermore, the reaction of (2) to (4) through the carbon is an exothermic reaction, which can improve the combustion efficiency of coal by increasing the temperature inside the boiler.

Ozone contained in ozone water may be decomposed into oxygen using manganese as a catalyst. The manganese may be supplied by addition of a manganese compound such as manganese hydroxide or manganese dioxide. Thus, ozone is decomposed into oxygen at the temperature of about 50 ° C. to 150 ° C. in the presence of a manganese compound to prevent the outflow of ozone gas and at the same time directly participate in the combustion reaction to enhance the combustion efficiency of coal. Can be done.

Ozone in ozone water can be decomposed to oxygen through at least the three decomposition mechanisms described above, namely pyrolysis, carbon-based decomposition and manganese-based decomposition. The three decomposition mechanisms differ in their decomposition rate or application temperature, respectively. For example, pyrolysis may increase about 2 times as the combustion temperature increases by 10 ° C., and carbon-based decomposition may occur when the contact area between the coal combustion performance improving agent and coal, which is an embodiment of the present invention, increases. The rate can also be increased, and manganese-catalyzed decomposition is the most active and rapid decomposition of ozone to oxygen in the 50 ° C-150 ° C temperature range. Therefore, the above three decomposition mechanisms can be adjusted to suit the required combustion situation so that the combustion rate or the combustion temperature can be adjusted. For example, in processes requiring low temperature combustion, a plurality of holes may be drilled in the coal to increase the surface area, and more manganese compounds may be added as compared to other compositions. In contrast, in processes requiring high temperature combustion, the surface area of coal and the amount of manganese compound input can be minimized.

Hydrogen peroxide can promote combustion by supplying oxygen when burning coal, such as ozone water, by the reaction of the following reaction formula (5). At this time, hydrogen peroxide can be decomposed into oxygen using manganese as a catalyst. The manganese may be supplied by addition of a manganese compound such as manganese hydroxide or manganese dioxide.

2H ₂ O ₂ → 2H ₂ O + O ₂ (Mn acts as a catalyst) ----------------- Reaction Scheme (5)

The hydrogen peroxide decomposition mechanism is also a mechanism for generating oxygen, such as the ozone decomposition mechanism above, and can be used to construct a combustion profile. For example, if a large amount of manganese compound is added in a process requiring low temperature combustion, the catalyst is increased during the hydrogen peroxide decomposition reaction, and thus hydrogen peroxide may be more actively decomposed into oxygen.

As described above, the manganese compound may act as a catalyst in the decomposition reaction of hydrogen peroxide of the reaction formula (5). The manganese compound may be one or more compounds selected from manganese hydroxide and manganese dioxide. In addition, in general combustion without manganese compound, coal should be oxidized to CO ₂ and H ₂ O at a high temperature of 750-800 ° C., but in a combustion reaction in which manganese compound is added, coal is CO ₂ and CO ₂ at a low temperature below 200 ° C. It can be oxidized with H ₂ O. Therefore, the amount of fuel consumed during combustion may be small because the oxidation reaction is performed at a low temperature.

Triethanolamine is a surfactant and can increase the solubility of the additive and prevent the corrosiveness of the alkaline compound. In addition, triethanolamine may react with ozone in ozone water to produce triethanolamine oxide. That is, the oxygen radicals are fixed to the triethanolamine, so that the combustion performance improving agent for coal may act to prevent oxygen from escaping from the liquid phase before being injected into the coal and combusted.

One or more compounds selected from alkali metal compounds, such as sodium hydroxide, sodium carbonate, potassium hydroxide, potassium carbonate and lithium hydroxide, disrupt the organic structure in the coal, making the coal porous, allowing oxygen-containing additives to adhere to the surface of the coal. do. That is, the alkali metal compound having a strong reaction force increases the active site of coal together with water vapor, so that additives such as oxygen can facilitate contact with coal. In addition, the alkali metal compound may also perform a function of removing sulfur by combining with sulfuric acid gas. Specifically, sodium (Na) may be combined with gaseous sulfurous acid gas (SO ₂ ) to be introduced into solid sodium sulfate (Na ₂ SO ₄ ) to remove sulfur components in the exhaust gas.

Borax can also remove sulfur to promote combustion. The mechanism by which borax removes sulfur is shown in Scheme (6) below.

S0 ₂ + H ₂ O + O → H ₂ SO ₄ + NaB ₄ 0 ₇ 10H ₂ O → Na ₂ SO ₄ + B ₄ O ₇ 10H ₂ O ------------ Scheme (6)

In addition, borax may form a glassy film on the inner wall of the boiler together with the alkali metal compound to prevent scale and corrosion. That is, the combustion performance improving agent for coal of the present invention is a liquid at room temperature, but when heated at a high temperature of 600 ° C. or more, the coal particles change into powdery particles. The changed particles do not fuse with the ash of the metal or the ash of the refractory mortar coal. to be. Therefore, the powder particles of the combustion performance improving agent for coal of the present application may react with ash and metal components while slid to the furnace wall together with the ash of coal and serve to peel off without petrification, so that the clinker may be desorbed without growth. In addition, the combustion performance improving agent for coal herein may penetrate into the clinker that has already been produced before the input thereof, and may cause cracking to cause the clinker to collapse. Therefore, there is an effect that the temperature in the boiler rises and the lifespan of the combustion equipment and the accessory equipment is extended.

Combustion performance improving agent for coal according to an embodiment of the present invention is the content of the ozone water is 39 to 70% by weight, the content of hydrogen peroxide is 4 to 14% by weight, the content of the manganese compound is 0.0001 to 0.001% by weight The content of the triethanolamine is 8 to 20% by weight, the content of the alkali metal compound is 8 to 20% by weight, and the content of borax may be 8 to 20% by weight. In addition, the coal combustion performance improving agent according to an embodiment of the present invention may have a specific gravity of 1.1-1.25 and a pH of 12-13.5.

The specific gravity of the combustion performance improving agent for coal according to an embodiment of the present invention may be mainly adjusted by the amount of triethanolamine and borax having the largest molecular weight. However, if the amount of the triethanolamine or borax is higher than 1.25, the content of the composition other than the triethanolamine and borax may be reduced, which may be disadvantageous in terms of oxygen supply or increase in surface area of coal. In addition, when the amount of triethanolamine or borax is small and the specific gravity is less than 1.1, the weight ratio of triethanolamine or borax may be reduced, which may be disadvantageous due to inability to properly perform sulfur removal or boiler corrosion prevention. Therefore, the specific gravity can be adjusted between 1.1 and 1.25 to suit the combustion situation so that both the sulfur removal and corrosion protection function and the oxygen supply and the surface area of coal can be properly represented.

PH of the combustion performance improving agent for coal according to an embodiment of the present invention can be adjusted mainly by the alkaline metal compound. For example, it can be adjusted by the dose of sodium hydroxide or potassium hydroxide containing an OH group. However, if the pH is more than 13.5 due to the large amount of sodium hydroxide or potassium hydroxide, the boiler can be easily corroded. In addition, if the pH of the sodium hydroxide or potassium hydroxide is less than 12, it may be difficult to perform the function of removing the sulfur and increasing the surface area of the coal as well as the clinker removal function. Thus, the pH can be adjusted between 12 and 13.5 to suit the combustion situation to prevent corrosion of the boiler as well as to increase the surface area of the coal and to increase the surface area of the coal, as well as to provide adequate clinker removal.

Combustion performance improving agent for coal according to an embodiment of the present invention has a feature that does not damage the corrosion, such as boilers, even though it is a high basic material. This is because triethanolamine plays a role in preventing corrosion of the alkali metal compound, and when the weight ratio of triethanolamine and the alkali metal compound is about 8-20: 8-20, preferably about 1: 1, There may be no damage.

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Combustion performance improving agent for coal according to an embodiment of the present invention described above includes both ozone water and hydrogen peroxide as an oxygen source to assist combustion. The generation of oxygen by ozone water and the generation of oxygen by hydrogen peroxide have different mechanisms and optimum process conditions. Furthermore, the generation of oxygen by ozone water is also at least three different mechanisms that differ in optimum process conditions. The generation of oxygen through various mechanisms with different optimal process conditions may mean that the combustion rate or efficiency can be controlled, as well as the effective generation of oxygen in various environments. For example, the coal combustion environment can be changed or effectively applied to different process facilities.

Hereinafter, a coal composition for fuel according to an embodiment of the present invention will be described. Since the coal composition for fuel according to an embodiment of the present invention includes a coal combustion performance improving agent according to an embodiment of the present invention described above, the following description will focus on the differences.

Coal composition for fuel according to an embodiment of the present invention includes a coal combustion performance improving agent, water and coal, including ozone water, hydrogen peroxide, manganese compounds, triethanolamine, alkali metal compounds and borax having a dissolved ozone amount of 100-200 ppm. , The combustion ratio improver for coal, the weight ratio of water and coal is 1: 2-9: 1000-3000.

Water of the coal composition for fuel according to an embodiment of the present invention may have a dissolved oxygen amount of 80-120ppm. Therefore, the oxygen in the water together with the ozone water and hydrogen peroxide in the combustion performance improving agent for coal can directly participate in the combustion reaction to increase the combustion efficiency of the coal.

Combustion performance improving agent for coal of the coal composition for fuel according to an embodiment of the present invention is the content of ozone water is 39 to 70% by weight, the content of hydrogen peroxide is 4 to 14% by weight, the content of manganese compound is 0.0001 to 0.001 weight %, The content of triethanolamine is 8 to 20% by weight, the content of the alkali metal compound is 8 to 20% by weight, the content of borax may be 8 to 20% by weight. In addition, the coal combustion performance improving agent of the coal composition for fuel according to an embodiment of the present invention may have a specific gravity of 1.1-1.25 and a pH of 12-13.5.

The alkali metal compound of the coal composition for fuel according to an embodiment of the present invention may be at least one compound selected from sodium hydroxide, sodium carbonate, potassium hydroxide, potassium carbonate and lithium hydroxide. In addition, the manganese compound of the coal composition for fuel according to an embodiment of the present invention may be one or more compounds selected from manganese hydroxide and manganese dioxide.

Coal of the coal composition for fuel according to an embodiment of the present invention may be one or more coal selected from bituminous coal, anthracite coal, lignite, peat, peat and bituminous coal.

Hereinafter, referring to FIG. 1, a method of manufacturing a combustion performance improving agent for coal according to an embodiment of the present invention will be described.

First, water having impurities of 10 ppb or less is prepared (s10). In this case, impurities refer to all substances except water (H ₂ O). In other words, in order to make it close to pure water, the water may be first filtered through a filter to remove dust and the like, and then passed through an ion exchange resin or a semipermeable membrane to reduce the concentration of impurities to 10 ppb or less.

Next, the water from which the impurities are removed may be heated to 40-80 ° C. (s20). Subsequently, borax is dissolved (s30). When water is heated to this temperature, the solubility of borax is increased.

Thereafter, the alkali metal compound is dissolved (s40). Subsequently, the water may be cooled to 12-20 ° C. (s50). The reason for cooling water is that the lower the temperature of the solvent, the higher the solubility of the gas (solute).

Next, ozone is dissolved in water to adjust the dissolved ozone amount of water to 100-200 ppm (s60). This step may include converting oxygen in the air into ozone by injecting short-wavelength ultraviolet rays into a tube through which air passes and passing the air through the water. At this time, the reason why the short wavelength ultraviolet rays are used is that the shorter wavelength in the ultraviolet region generates ozone well.

In the next step, hydrogen peroxide may be dissolved in water (s70). Next, triethanolamine can be dissolved (s80). Subsequently, the manganese compound may be dissolved (s90).

Hereinafter, the present invention will be described in detail through experimental examples. This is for the purpose of illustrating the present invention, and thus the scope of the present invention is not limited thereto.

<Production Example>

Combustion performance improving agent for coal having a composition of Table 1 was prepared. The specific manufacturing method was as follows.

First, 7.3 tons of water having a concentration of 10 ppb or less prepared by passing water through a dust filter, an ion exchange resin and a semipermeable membrane was heated to 65 ° C. in a boiler and placed in a first reactor.

1130 kg of borax was added thereto, and water was completely dissolved by stirring while maintaining 65 ° C.

The temperature was maintained and 1444 kg of sodium hydroxide was dissolved while stirring.

The solution was cooled to 20 ° C. over 3 hours.

While maintaining the water temperature at 20 ° C, ozone generated by passing oxygen through a glass tube irradiating ultraviolet rays with a wavelength of 165 nm was supplied to the reaction tank and dissolved to form ozone water having a dissolved ozone amount of 120 ppm.

Subsequently, 524 kg of hydrogen peroxide was added and 1070 kg of triethanolamine was added thereto, followed by stirring for 2 hours. Finally, 32 g of manganese hydroxide compound was added to prepare a combustion performance improving agent for coal having a specific gravity of 1.15 and a pH of 13.2.

Composition ratio of production example subject Quantity (Kg) weight% borax 1,130 9.85% Sodium hydroxide 1,444 12.59% Hydrogen peroxide 524 4.56% Triathanolamine 1,070 9.33% Water (ozone) 7,300 63.67% Manganese hydroxide 0.032 0.0003% Gross weight 11468.032 100%

Experimental Example 1 Test of Boiler Efficiency and Exhaust Gas Temperature in a Boiler for Power Generation

The combustion performance improving agent for coal prepared according to the above production example was introduced into a power generation boiler, and the boiler efficiency before and after the introduction was compared. Specifically, the coal combustion performance enhancer above is mixed with water at the coal inlet of the power generation boiler, sprayed in a liquid state on the coal transport conveyor belt by an automatic spraying device to be evenly mixed with the coal being transported. The weight ratio of the above combustion performance improving agent for coal, water and coal was adjusted to be 1: 2-9: 1000-3000.

The graph which shows the test result in this power boiler is shown in FIG. In FIG. 2, the horizontal axis of the graph distinguishes between before and after using the combustion performance improving agent for coal, and the vertical axis represents the efficiency of the boiler. The efficiency of the boiler was calculated by the following equation.

Before using the coal combustion performance improver according to an embodiment of the present invention, the boiler efficiency was only 77.80%, but after use, the boiler efficiency was significantly increased to 87.98%.

In addition, Figure 3 is a graph comparing the temperature change of the exhaust gas per hour before and after the combustion performance improver for coal to the power plant boiler of the present experiment. As clearly shown in Figure 3, it can be seen that the temperature of the exhaust gas is increased compared to when not added after 3 hours after the combustion performance improving agent for coal.

Experimental Example 2 Corrosion Measurement Test

Combustion Performance Enhancer for Coal Maintained at 55 ° C. in a Thermostat (only pH was increased to 13.4 in Coal Combustion Enhancer Produced in Manufacturing Example) 50 kg 20 mm of previously weighed iron pieces were immersed in 4,000 cm3 and maintained for 1 week. . After one week, the iron pieces were weighed and the degree of erosion was obtained. If erosion degree exceeds 6.25mm per year, it is judged as "corrosive". In this experiment, the pH of the coal combustion improver was 13.4, and the corrosion resistance of the strong base and the corrosion test was 0 mm.

Claims (20)

Ozone water, hydrogen peroxide, manganese compounds, triethanolamine, alkali metal compounds and borax having a dissolved ozone amount of 100-200 ppm,
The content of the ozone water is 39 to 70% by weight, the content of hydrogen peroxide is 4 to 14% by weight, the content of the manganese compound is 0.0001 to 0.001% by weight, and the content of triethanolamine based on the coal combustion performance improving agent. Silver is 8 to 20% by weight, the content of the alkali metal compound is 8 to 20% by weight, the content of the borax is 8 to 20% by weight,
The coal combustion performance improving agent has a specific gravity of 1.147-1.157 and a pH 12-13.5 coal combustion performance improving agent. delete delete The method of claim 1,
The alkali metal compound is at least one compound selected from sodium hydroxide, sodium carbonate, potassium hydroxide, potassium carbonate and lithium hydroxide coal combustion performance improving agent. The method of claim 1,
The manganese compound is one or more compounds selected from manganese hydroxide and manganese dioxide combustion performance improving agent for coal. delete Combustion performance improving agent for coal, including ozone water, hydrogen peroxide, manganese compound, triethanolamine, alkali metal compound, and borax having a dissolved ozone amount of 100-200 ppm;
water; And
Including coal,
Combustion performance improving agent for the coal, the weight ratio of the water and the coal is 1: 2-9: 1000-3000,
The water has a dissolved oxygen amount of 80-120ppm,
The coal combustion performance improving agent is the content of the ozone water is 39 to 70% by weight, the content of hydrogen peroxide is 4 to 14% by weight, the content of the manganese compound is 0.0001 to 0.001% by weight, the content of the triethanolamine is 8 to 20% by weight, the content of the alkali metal compound is 8 to 20% by weight, the content of the borax is 8 to 20% by weight,
The coal combustion performance improving agent has a specific gravity of 1.147-1.157, the pH of the coal composition for fuel 12-13.5. delete delete delete delete 8. The method of claim 7,
The alkali metal compound is a coal composition for fuel is at least one compound selected from sodium hydroxide, sodium carbonate, potassium hydroxide, potassium carbonate and lithium hydroxide. 8. The method of claim 7,
The manganese compound is a coal composition for fuel is at least one compound selected from manganese hydroxide and manganese dioxide. delete delete delete delete delete delete delete

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