CN116925830A - Combustion improver with frit softening component and preparation method thereof - Google Patents

Combustion improver with frit softening component and preparation method thereof Download PDF

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CN116925830A
CN116925830A CN202210373475.XA CN202210373475A CN116925830A CN 116925830 A CN116925830 A CN 116925830A CN 202210373475 A CN202210373475 A CN 202210373475A CN 116925830 A CN116925830 A CN 116925830A
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frit
combustion
weight
parts
sodium
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金泰旭
金大训
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L9/00Treating solid fuels to improve their combustion
    • C10L9/10Treating solid fuels to improve their combustion by using additives
    • C10L9/12Oxidation means, e.g. oxygen-generating compounds
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L10/00Use of additives to fuels or fires for particular purposes
    • C10L10/14Use of additives to fuels or fires for particular purposes for improving low temperature properties
    • C10L10/16Pour-point depressants
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2230/00Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/08Inhibitors
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2230/00Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/22Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)

Abstract

The present invention relates to a combustion improver having a frit softening component and a method for producing the same, wherein a dissolver, a frit inhibitor, a stabilizer and an oxygen supply agent are dissolved in water in this order to produce the combustion improver, and Na which is classified as a toxic substance is used as the frit inhibitor 2 B 4 Further used is a boron compound selected from potassium pentaborate (KB) having better solubility and boron mass ratio than borax 5 O 8 ) Potassium tetraborate tetrahydrate (K) 2 B 4 O 7 ) Calcium tetraborate (CaB) 4 O 7 ) Sodium pentaborate (NaB) 5 O 8 ) Sodium hexaborate (Na) 2 B 6 O 10 ) Disodium octaborate (Na) 2 B 8 O 13 ) More than 1 of the above, a significantly smaller amount of a dissolving agent used to dissolve the frit inhibitor than before and a stabilizer used to prevent precipitation after dissolution of the frit inhibitor can be used, so that the fritThe effect of reducing the density is not inhibited, but the generation of soot and slag is sufficiently inhibited, and the production process and the production cost are also greatly reduced.

Description

Combustion improver with frit softening component and preparation method thereof
Technical Field
The present invention relates to a combustion improver having a frit softening component, which can prevent personal accidents of falling objects by reducing hardness of a frit grown in a combustion chamber, and a method for preparing the same, and relates to a combustion improver having a frit softening component, which is prepared by sequentially dissolving a dissolver, a frit inhibitor, a stabilizer, and an oxygen supplier in water, using Na, which is classified as a toxic substance, as a frit inhibitor, and a method for preparing the same 2 B 4 And potassium pentaborate (Potassium Pentaborate) (KB) as boron compound having better solubility and boron mass ratio than borax 5 O 8 ) Potassium tetraborate tetrahydrate (Potassium Tetraborate Tetrahydrate) (K) 2 B 4 O 7 ) Calcium tetraborate (Calcium Tetraborate) (CaB) 4 O 7 ) Sodium pentaborate (Sodium Pentaborate) (NaB) 5 O 8 ) Sodium hexaborate (Sodium Hexaborate) (Na) 2 B 6 O 10 ) Disodium octaborate (Sodium Octaborate) (Na) 2 B 8 O 13 ) Since the amount of the solvent used for dissolving the frit inhibitor and the amount of the stabilizer used for preventing precipitation after the dissolution of the frit inhibitor are significantly smaller than those used in the past, the effect of reducing the frit density is not inhibited, soot and slag generation are sufficiently suppressed, and the production process and production cost are greatly reduced.
Background
Various means for improving combustion efficiency in a combustion furnace for combusting various fossil fuels containing various wastes have been studied in the past in order to achieve stable combustion. Among these various means, a combustion improver which promotes complete combustion in a combustion furnace by a catalyst action is a representative example. To achieve complete combustion, 3T needs to be satisfied, i.e., sufficient Temperature (Temperature) and Time of combustion (Time), mixing or turbulence (turbulence).
However, the combustion time required for an actual incinerator is different depending on the type of waste, the water content and the state, and the turbulence level in the incinerator is different depending on the shape and operation method of the equipment and the formation of the clinker, so that it is difficult to achieve complete combustion in most incinerators.
Therefore, in order to improve the complete combustion efficiency in the field, the only method is adopted, namely, a method of appropriately controlling the combustion time and the combustion temperature is fuelled for application. In order to properly control the combustion time and the combustion temperature in this way, it is necessary to accumulate expertise of the incinerator and characteristics of the carried-in waste and fossil fuel and a sufficient Know-How (Know-How) of the on-site system, but most of the operation sites do not have such factors, but operate only by experience.
In order to solve such problems, for example, korean patent laid-open publication No. 10-0485193 (patent document 1) discloses "a flame-retardant and scale-preventing combustion improver composed of 100 to 300 parts by weight of water mixed with 100 parts by weight of a composition comprising 20 to 45 parts by weight of borax, 10 to 25 parts by weight of hydrogen peroxide, 20 to 40 parts by weight of triethanolamine, 5 to 15 parts by weight of zinc oxide (ZnO) and 1 to 8 parts by weight of manganese dioxide", korean patent laid-open publication No. 2006-0081654 (patent document 2) "a fuel additive composition for sodium hydroxide comprising 8 to 40 parts by weight of hydrogen peroxide, 8 to 40 parts by weight of an amine-based stabilizer, 10 to 40 parts by weight of borax (box), 16 to 40 parts by weight and the balance of water is disclosed.
However, in the above-exemplified prior art, borax (Na 2 B 4 ·10H 2 O), borax has a 20 ℃ standard solubility of about 3%, and is slightly low, and in order to increase the solubility of borax, it is necessary to use a considerable amount of a solvent such as sodium hydroxide (NaOH) or potassium hydroxide (KOH), and since it is not easily dissolved at normal temperature, a step of heating at 60 ℃ or higher is necessary before dissolution, and after dissolution of borax, when hydrogen peroxide is added, a severe reaction at 70 ℃ or higher is caused, and the amount of dissolved oxygen is drastically reduced, and therefore cooling is necessary before addition of hydrogen peroxide, but since borax is heated at 60 ℃ or higher for dissolution, it is necessary to start up a larger number of cooling devices.
Therefore, a heating step is necessary before the borax is dissolved, and a large number of cooling devices are required for cooling after the borax is dissolved, so that there is a problem that the manufacturing process is complicated and the manufacturing cost is increased.
In addition, the prior art has a problem of generating a large amount of sulfur oxides, and the sulfur oxides are generated in borax (Na 2 B 4 O 7 ·10H 2 O) contains Na of 0.3% or more 2 B 4 In this case, the boron is regarded as a toxic substance, and therefore, there is a risk of causing a worker's disease or inducing atmospheric pollution, and there is a problem that the amount of boron used in the combustion improver is limited, and the ratio of boron to the entire mass of borax is only 11%, and therefore, the effect of reducing the density of the frit is suppressed, and there is a problem that the generation of soot and slag cannot be sufficiently suppressed, and therefore, the structure of ultrafine particles in the combustion substance increases.
Patent literature
Korean patent No. 10-0485193
Korean patent laid-open publication No. 2006-0081654
Disclosure of Invention
The present invention has been made to solve the problems of the prior art,
the main object of the present invention is to induce complete combustion in a short period of time, suppress the growth of clinker in a burner, and dramatically improve the convenience of burner operation, and to use Na, which is not classified as a harmful substance, as a clinker inhibitor 2 B 4 Further using potassium pentaborate (Potassium Pentaborate) (KB) as boron compound with high solubility and boron mass ratio 5 O 8 ) Potassium tetraborate tetrahydrate (Potassium Tetraborate Tetrahydrate) (K) 2 B 4 O 7 ) Calcium tetraborate (Calcium Tetraborate) (CaB) 4 O 7 ) Sodium pentaborate (Sodium Pentaborate) (NaB) 5 O 8 ) Sodium hexaborate (Sodium Hexaborate) (Na) 2 B 6 O 10 ) Disodium octaborate (Sodium Octaborate) (Na) 2 B 8 O 13 ) In which an accident caused by a drop of the frit when a worker maintains the incinerator as the binding force of the frit is weakened when the burned object is converted into the frit is prevented in advance.
That is, another object of the present invention is to use potassium pentaborate (Potassium Pentaborate) (KB) as a boron compound having a remarkably high solubility as a frit inhibitor 5 O 8 ) Potassium tetraborate tetrahydrate (Potassium Tetraborate)Tetrahydrate)(K 2 B 4 O 7 ) Etc. to replace borax (Na) 2 B 4 ·10H 2 O), the frit inhibitor can be dissolved completely without using a dissolving agent, or can be dissolved only with a small amount of a dissolving agent, and is easily dissolved at ordinary temperature, so that a heating process is not required, a separate cooling is not required before hydrogen peroxide is added, or a fewer cooling device is required, the preparation process of the combustion improver becomes simple, the preparation cost can be remarkably reduced, and the mass ratio of boron to borax (Na 2 B 4 ·10H 2 O) Excellent Potassium pentaborate (Potassium Pentaborate) (KB) as boron Compound 5 O 8 ) Potassium tetraborate tetrahydrate (Potassium Tetraborate Tetrahydrate) (K) 2 B 4 O 7 ) And so on, the effect of reducing the density of the frit is not inhibited at all, the generation of soot and slag can be sufficiently inhibited, and the structure of ultrafine particles in the combustion substance is reduced.
The combustion improver composition of the present invention for achieving the above object is characterized in that,
the combustion improver comprises a dissolving agent, a frit inhibitor for inducing complete combustion and producing a frit inhibiting effect, a stabilizer for preventing decomposition of oxygen-containing substances and improving drug permeation capacity on the surface of the burned matter to activate combustion reaction, an oxygen supply agent for releasing oxygen upon permeation into fuel and thermal reaction, for increasing combustion speed and combustion efficiency,
the above-mentioned dissolving agent is 1-6 weight portions of above-mentioned dissolving agent mixed in 50-90 weight portions of water by using more than 1 kind of aqueous solution selected from silicide, sodium hydroxide (NaOH) and potassium hydroxide (KOH), and the above-mentioned frit inhibitor is made up by using Na which is classified as toxic material 2 B 4 Further using potassium pentaborate (Potassium Pentaborate) (KB) as boron compound which is superior to borax in both solubility and boron mass ratio 5 O 8 ) Potassium tetraborate tetrahydrate (Potassium Tetraborate Tetrahydrate) (K) 2 B 4 O 7 ) Calcium tetraborate (Calcium Tetrabo)rate)(CaB 4 O 7 ) Sodium pentaborate (Sodium Pentaborate) (NaB) 5 O 8 ) Sodium hexaborate (Sodium Hexaborate) (Na) 2 B 6 O 10 ) Disodium octaborate (Sodium Octaborate) (Na) 2 B 8 O 13 ) More than 1 of (C) is used, and 2 to 20 parts by weight of (C) is used as the stabilizer 2 H 6 O 2 ) Propane-1,2-diol (Propane-1, 2-diol) (C 3 H 8 O 2 ) Glycerol (C) 3 H 8 O 3 ) Ethylamine (ethyl) (C) 2 H 5 NH 2 ) Diethylamine (C) 4 H 11 N), triethylamine (C) 6 H 15 N), 2-Aminoethanol (2-amino ethanol) (C 2 H 7 NO), diethanolamine (Diethanamine) (C 4 H 11 NO 2 ) Triethanolamine (Triethane) (C) 6 H 15 NO 3 ) More than 1 of the above components is further used in an amount of 5 to 10 parts by weight, and hydrogen peroxide (Hydrogen Peroxide) (H) 2 O 2 ) Further, 3 to 20 parts by weight are used.
The method for producing a combustion improver having a frit softening composition according to the present invention, which is configured as described above, induces complete combustion in a short period of time, suppresses frit growth in a combustion furnace, and dramatically improves the convenience of the operation of the combustion furnace, wherein Na, which is not classified as a hazardous substance, is used as a frit inhibitor 2 B 4 Further using potassium pentaborate (Potassium Pentaborate) (KB) as boron compound with high solubility and boron mass ratio 5 O 8 ) Potassium tetraborate tetrahydrate (Potassium Tetraborate Tetrahydrate) (K) 2 B 4 O 7 ) Calcium tetraborate (Calcium Tetraborate) (CaB) 4 O 7 ) Sodium pentaborate (Sodium Pentaborate) (NaB) 5 O 8 ) Sodium hexaborate (Sodium Hexaborate) (Na) 2 B 6 O 10 ) Disodium octaborate (Sodium Octaborate) (Na) 2 B 8 O 13 ) More than 1 kind of the above-mentioned materials, thereby having the function of preventing the burnt material from becomingWhen changing to the clinker, the operator maintains the effect of accidents caused by the falling of the clinker when the incinerator is maintained along with the weakening of the binding force of the clinker.
That is, in the present invention, potassium pentaborate (Potassium Pentaborate) (KB) as a boron compound having a remarkably high solubility is used as a frit inhibitor 5 O 8 ) Potassium tetraborate tetrahydrate (Potassium Tetraborate Tetrahydrate) (K) 2 B 4 O 7 ) Etc. to replace borax (Na) 2 B 4 10H 2O), whereby the frit inhibitor can be dissolved even without using a dissolving agent at all, or even with a small amount of a dissolving agent, and is easily dissolved at ordinary temperature, so that a heating step is not required, a separate cooling step is not required before adding hydrogen peroxide, or a smaller cooling device is required, the production step of the combustion improver becomes simple, the production cost can be significantly reduced, and the mass ratio of boron to borax (Na 2 B 4 ·10H 2 O) Excellent Potassium pentaborate (Potassium Pentaborate) (KB) as boron Compound 5 O 8 ) Potassium tetraborate tetrahydrate (Potassium Tetraborate Tetrahydrate) (K) 2 B 4 O 7 ) And the like, whereby the effect of reducing the density of the frit is not suppressed at all, and the generation of soot and slag can be sufficiently suppressed, and the effect of reducing the structure of ultrafine particles in the combustion substance can be obtained.
Drawings
Fig. 1 shows the experimental results of the combustion speed of experimental example 1.
Fig. 2 shows the interior of a frit produced according to the invention of experimental example 2.
Fig. 3 shows the interior of the frit produced by the comparative experiment of experimental example 2.
Fig. 4 shows the frit surface generated according to the present invention of experimental example 3.
Fig. 5 shows the frit surface produced by the comparative experiment of experimental example 3.
Detailed Description
Hereinafter, the present invention will be described in more detail with reference to preferred embodiments. However, the scope of the present invention is of course not limited thereto.
In the description, the present embodiment is provided to fully inform the scope of the invention to those ordinarily skilled in the art, and the scope of the invention is defined by the claims only.
According to a preferred embodiment of the present invention, the present invention relates to a combustion improver composition and a method for producing the same, in which the combustion improver composition improves combustion efficiency by increasing combustion speed and combustion temperature of fossil fuels including waste, suppresses the generation of clinker, and can suppress combustion exhaust gas by easily adhering and separating the generated clinker and dirt.
The combustion improver according to the present invention, which reduces activation energy and maximizes oxygen supply in such a manner as to promote complete combustion, comprises a dissolving agent, a frit inhibitor for inducing complete combustion and producing a frit inhibiting effect, a stabilizer for preventing decomposition of oxygen-containing substances and improving drug permeation capacity on the surface of an incinerator to activate combustion reaction, and an oxygen supply agent for releasing oxygen upon permeation into fuel and thermal reaction to increase combustion speed and combustion efficiency.
The invention solves the problem of inhibiting the generation of the frit based on the boron component in the prior art, and adds the silicon dioxide component to inhibit the generation of the frit and reduce the hardness of the frit, and on the other hand, the invention prevents the personal accidents of falling objects caused by the early falling of the frit in the burning process and the early falling of the frit in the maintenance of the burning furnace.
First, a dissolving agent is mixed in water, and 1 or more selected from the group consisting of silicide, sodium hydroxide (NaOH), and potassium hydroxide (KOH) is used as the dissolving agent, and 6 parts by weight or less of the above-described dissolving agent is added to 50 to 90 parts by weight of water to dissolve the mixture. (step 1)
For the first step described above, it is preferable to perform it in a tank to which a jacket (socket) is attached and a stirrer is installed, 1000 to 1500kg of water is added to the tank, stirring is performed at 60 to 90rpm, and the above silicide is added to 120kg or less, or it may not be used at all.
In the above first step, after the addition of the above silicide, preferably, after further stirring for 1 hour to 1 hour for 30 minutes, a second step process in which the frit inhibitor is dissolved is performed.
In the present invention, na which is classified as a toxic substance is used as a frit inhibitor 2 B 4 In this respect, exhibit the greatest characteristics,
for this purpose, borax is not used at all, but instead, when the burned matter is converted into a frit, potassium pentaborate (Potassium Pentaborate) (KB) is used as a boron compound which is superior to borax in both solubility and boron mass ratio in order to weaken the bonding force of the frit 5 O 8 ) Potassium tetraborate tetrahydrate (Potassium Tetraborate Tetrahydrate) (K) 2 B 4 O 7 ) Calcium tetraborate (Calcium Tetraborate) (CaB) 4 O 7 ) Sodium pentaborate (Sodium Pentaborate) (NaB) 5 O 8 ) Sodium hexaborate (Sodium Hexaborate) (Na) 2 B 6 O 10 ) Disodium octaborate (Sodium Octaborate) (Na) 2 B 8 O 13 ) In order to effectively function as a frit inhibitor, it is necessary to add 2 to 20 parts by weight, preferably 3 to 18 parts by weight, to the mixture liquid in the first step. (step 2)
However, 1 or more selected as the above frit inhibitor may be added up to 20 parts by weight in view of the solubility of ionized borax,
for borax (Na) 2 B 4 ·10H 2 O) since the content of boron (B) which can be regarded as the main softening component of the frit is less than the same weight of disodium octaborate (Sodium Octaborate) (Na) 2 B 8 O 13 ) And the like, so that disodium octaborate (Sodium Octaborate) (Na) 2 B 8 O 13 ) And the like, which contains 10% more boron than borax, based on the molar ratio.
And, for borax (Na) 2 B 4 ·10H 2 O) is only soluble to about 3.7% at 20℃and therefore only a large amount of a solvent can be used, but for Potassium tetraborate tetrahydrate (Potassium Te)traborate Tetrahydrate)(K 2 B 4 O 7 ) Disodium octaborate (Sodium Octaborate) (Na) 2 B 8 O 13 ) For example, since the solubility at 20 ℃ is about 20% or more, a significantly small amount of the dissolving agent can be used, and the precipitation after dissolution is not easy.
Therefore, as the frit inhibitor, potassium pentaborate (Potassium Pentaborate) (KB) having better solubility and boron mass ratio than borax was used 5 O 8 ) Potassium tetraborate tetrahydrate (Potassium Tetraborate Tetrahydrate) (K) 2 B 4 O 7 ) Calcium tetraborate (Calcium Tetraborate) (CaB) 4 O 7 ) Sodium pentaborate (Sodium Pentaborate) (NaB) 5 O 8 ) Sodium hexaborate (Sodium Hexaborate) (Na) 2 B 6 O 10 ) Disodium octaborate (Sodium Octaborate) (Na) 2 B 8 O 13 ) In the case of 1 or more of (a), the boron content in the combustion improver can be increased by being easily dissolved even without heating, and therefore, the effect of reducing the density of the frit is not suppressed at all, but the generation of soot and slag is sufficiently suppressed, and the structure of ultrafine particles in the combustion substance can be reduced.
In order to prevent decomposition of oxygen-containing substances and to enhance the penetration ability of drugs on the surface of incinerated substances to activate combustion reaction and to prevent precipitation of dissolved frit inhibitor, it is necessary to add a stabilizer after the third step, and in the present invention, a stabilizer selected from Ethylene Glycol (C) 2 H 6 O 2 ) Propane-1,2-diol (Propane-1, 2-diol) (C 3 H 8 O 2 ) Glycerol (C) 3 H 8 O 3 ) Ethylamine (ethyl) (C) 2 H 5 NH 2 ) Diethylamine (C) 4 H 11 N), triethylamine (C) 6 H 15 N), 2-Aminoethanol (2-amino ethanol) (C 2 H 7 NO), diethanolamine (Diethanamine) (C 4 H 11 NO 2 ) Triethanolamine (Triethane) (C) 6 H 15 NO 3 ) More than 1 of (a) in order to prevent oxygen-containing substancesTo decompose and enhance the penetration ability of the chemical on the surface of the burned matter to activate the combustion reaction, it is necessary to add 5 to 10 parts by weight to the mixed solution of the third step. (step 3)
In the present invention, potassium pentaborate (Potassium Pentaborate) (KB) having significantly better solubility than borax is used as a frit inhibitor 5 O 8 ) Potassium tetraborate tetrahydrate (Potassium Tetraborate Tetrahydrate) (K) 2 B 4 O 7 ) Calcium tetraborate (Calcium Tetraborate) (CaB) 4 O 7 ) Sodium pentaborate (Sodium Pentaborate) (NaB) 5 O 8 ) Sodium hexaborate (Sodium Hexaborate) (Na) 2 B 6 O 10 ) Disodium octaborate (Sodium Octaborate) (Na) 2 B 8 O 13 ) Because of the low likelihood of precipitation of the frit inhibitor after it has been dissolved, significantly less stabilizer may be used than in the prior art.
May comprise Glycerol (C) 3 H 8 O 3 ) The glycerol used therein is typically a 3-valent alcohol, also known as glycerol, which is a colorless, viscous, hygroscopic liquid with a melting point of 17 ℃ and a boiling point of 290 ℃.
The combustion improver composition of the present invention constituted as above hardly generates nitrogen oxides, does not freeze at the average external temperature in spring and autumn, is easy to use, induces complete combustion in a short period of time, reduces the concentration of combustion exhaust gas and improves the acid making ability while suppressing the growth of frit in the combustion furnace, and can dramatically improve the convenience of the operation of the combustion furnace.
Finally, in order to increase the combustion speed and combustion efficiency by releasing oxygen when the mixed solution permeates into the fuel and reacts with heat, an oxygen-supplying agent is required to be added after the third step, and hydrogen peroxide (Hydrogen Peroxide) (H 2 O 2 ) In order to release oxygen to improve the combustion speed and the combustion efficiency when the mixed liquid permeates into the fuel to react with heat, it is necessary to add 3 to 20 parts by weight, preferably 5 to 15 parts by weight, to the mixed liquid in the third step. (step 4)
For example, hydrogen peroxide (Hydrogen Peroxide) (H) 2 O 2 ) 80 to 120kg, in which the addition of the hydrogen peroxide solution causes a severe reaction, causing the temperature of the mixed solution to rise above 70 ℃.
When the temperature is increased in this way, the melting ratio of hydrogen peroxide (Hydrogen Peroxide) is lowered, and the amount of dissolved oxygen in the solution is significantly reduced, but in the present invention, potassium pentaborate (Potassium Pentaborate) (KB) having a significantly high solubility as a boron compound is used as a frit inhibitor 5 O 8 ) Potassium tetraborate tetrahydrate (Potassium Tetraborate Tetrahydrate) (K) 2 B 4 O 7 ) Etc. to replace borax (Na) 2 B 4 ·10H 2 O), since the frit inhibitor can be dissolved by using a small amount of the dissolving agent at normal temperature, no additional processing step is required, and since a heating step is not required, a cooling device may not be started or may be started relatively little before the hydrogen peroxide solution is added.
On the other hand, sodium hydroxide (NaOH) and potassium hydroxide (KOH) may be used instead of the silica component in the first step, and in this case, it is necessary to add 6 parts by weight or less of the sodium hydroxide (NaOH) and potassium hydroxide (KOH) to 50 to 90 parts by weight of water, preferably 1 to 6 parts by weight of the sodium hydroxide (NaOH) and potassium hydroxide (KOH) to dissolve the silica component.
In the case where sodium hydroxide (NaOH) and potassium hydroxide (KOH) are used instead of the silica component in the first step, since the alkali heat reaction is caused by sodium hydroxide and potassium hydroxide and the temperature is raised to 70 ℃ or higher, the frit inhibitor can be more easily dissolved in the subsequent frit inhibitor dissolving step.
The combustion improver with a frit softening composition of the present invention having the above constitution induces complete combustion in a short period of time, reduces the concentration of combustion exhaust gas and improves the acid generating ability while suppressing the growth of frit in a combustion furnace, and dramatically improves the convenience of the operation of the combustion furnace, and the addition of a silica component to a solvent suppresses the formation of frit and reduces the hardness of frit, on the other hand, the use of a frit inhibitor containing no silicaNa classified as a harmful substance 2 B 4 Further using potassium pentaborate (Potassium Pentaborate) (KB) as boron compound with high solubility and boron mass ratio 5 O 8 ) Potassium tetraborate tetrahydrate (Potassium Tetraborate Tetrahydrate) (K) 2 B 4 O 7 ) Calcium tetraborate (Calcium Tetraborate) (CaB) 4 O 7 ) Sodium pentaborate (Sodium Pentaborate) (NaB) 5 O 8 ) Sodium hexaborate (Sodium Hexaborate) (Na) 2 B 6 O 10 ) Disodium octaborate (Sodium Octaborate) (Na) 2 B 8 O 13 ) More than 1 in the above, thereby having the effect of preventing accidents caused by the falling of the frit when the operator maintains the incinerator as the binding force of the frit is weakened when the burned object is converted into the frit.
And, potassium pentaborate (Potassium Pentaborate) (KB) as a frit inhibitor of the present invention 5 O 8 ) Potassium tetraborate tetrahydrate (Potassium Tetraborate Tetrahydrate) (K) 2 B 4 O 7 ) Disodium octaborate (Sodium Octaborate) (Na) 2 B 8 O 13 ) Unlike borax, the boron-containing composition is not limited by the amount of the composition to be used, and is excellent in the mass ratio of boron as a whole, so that the effect of reducing the density of the frit is not inhibited at all, the generation of soot and slag can be sufficiently inhibited, and the effect of reducing the structure of ultrafine particles in the combustion substance can be obtained.
The present invention will be described more specifically with reference to examples, comparative examples and experimental examples, but the scope of the present invention is not limited to these examples.
Example 1
In order to suppress the generation of a frit induced by a polymer component such as plastic in RDF burned in a solid boiler, a frit inhibitor for a polymer substance is prepared.
First, after adding 4.4 parts by weight of NaOH and 2 parts by weight of sodium silicate to 70 parts by weight of water having a water temperature of 30℃to form a dissolving agent, 2 parts by weight of sodium percarbonate, 2 parts by weight of sodium perborate and Potassium tetraborate tetrahydrate (Potassium)Tetraborate Tetrahydrate)(K 2 B 4 O 7 ) 12 parts by weight, and the reaction was promoted by intense stirring at 100RPM or more. Then, 7.5 parts by weight of hydrogen peroxide and 8 parts by weight of a stabilizer were charged to prepare a frit inhibitor for polymer fuel.
Example 2
Disodium octaborate (sodium octaborate, na) was mixed in 60 parts by weight of water having a water temperature of 30℃in the reaction tank 1 2 B 8 O 13 ) 15 parts by weight of propylene glycol (C) as a surfactant was mixed in the reaction tank 2 to suppress oxygen release of hydrogen peroxide 3 H 8 O 2 ) 10 parts by weight of hydrogen peroxide (H) 2 O 2 ) 10 parts by weight were transferred to the reaction tank 1 and passed through 5m 3 3 hours air (air) injection process per min, reacting, stirring, and preparing the frit softener.
Example 3
Sodium pentaborate (sodium pentaborate, naB) having a water solubility of 11% at 20℃was dissolved in 70 parts by weight of water at 50℃in excess 5 O 8 ) After 14 parts by weight, glycerol (C) 3 H 8 O 3 ) 8 parts by weight, and stirred for 2 hours. Thereafter, hydrogen peroxide (H 2 O 2 ) 9 parts by weight of a frit softener was produced.
Example 4
To delay the decomposition of hydrogen peroxide, 32% hydrogen peroxide (H 2 O 2 ) 11 parts by weight of potassium pentaborate (potassium pentaborate, KB) was added thereto after preparing a low concentration aqueous hydrogen peroxide solution 5 O 8 ) 14 parts by weight, and then, glycerin (C) 3 H 8 O 3 ) 5 parts by weight and triethanolamine (C) 6 H 15 NO 3 ) 5 parts by weight of a frit softener was produced.
Experimental example 1
To compare the oxygen concentration of the inventive material with the combustion rate based thereon, experiments were performed with different concentrations of sodium perborate.
The inhibitor was prepared according to example 1, and the amounts of sodium perborate added were varied, and 1,2, and 3 parts by weight were used.
For the experiment, the temperature was increased by 0.5m in an electric furnace heated at 950 degrees celsius 3 Air (Air) was injected at a flow rate of/min, and the activated carbon was pulverized to 0.5mm or less by the fuel furnace.
To prevent complete combustion of the fuel with only residual ash, a 30 minute experiment was performed. After the experiment, unburned fuel remained in the furnace, and after the furnace was cooled in a dryer (dryer) for 30 minutes, the weight was measured. The experimental results are as follows.
Blank (Blank) (g) Sample 1 (g) Sample 2 (g) Sample 3 (g) Average (g)
Initial weight 100.514 100.015 100.325 100.914 -
Weight after weight reduction 46.284 38.51 37.598 36.648 -
Decrement% 53.953 61.496 62.524 63.684 62.568
The above experiment results were obtained according to example 1, in which 12 parts by weight of potassium tetraborate and a predetermined amount of sodium perborate were used as a frit inhibitor in combination, and 1,2, and 3 parts by weight of sodium perborate were used in samples 1,2, and 3, respectively.
As shown in fig. 1, the experimental results showed that the combustion improver according to the present invention was found to have an average of 62.568% and a change rate of 8.615% compared to 53.953% when the combustion improver was not used, and therefore, the ash reduction effect and the dust reduction effect were found to be exhibited, in the amount remaining after combustion, that is, the reduction rate of the generation amount of the fly ash.
Experimental example 2
To confirm the performance of the frit softener component and its expression mechanism, the surface of the frit produced after mixing the combustion improver using sodium pentaborate as a frit inhibitor according to example 3 with coal and burning at 1100 ℃ was observed by a scanning electron microscope (SEM, scanning Electron Microscope). As a result, a large number of borate crystals as shown in fig. 2 were observed inside the frit produced.
To support the experimental results, the coal to which the combustion improver was not added was combusted under the same conditions to generate a frit, and the surface of the frit generated on the coal combusted without the addition of the frit softener was found to be free of effective boron compound crystals, and cracks in the porous portion or the frit itself were found to be free of any cracks, thus forming a very strong frit (fig. 3).
Thus, sodium pentaborate (sodium pentaborate, naB) according to example 3 was used 5 O 8 ) When the flame retardant is used as a frit inhibitor, it is confirmed that the borate crystal melts and penetrates to the surface and the inside of the frit, and the bonding force of the frit is weakened, unlike the case where the flame retardant is not used, and the borate crystallized in the inside of the frit is preferentially broken even if a weak force is applied, and the hardness of the borate crystallized in the inside of the frit is weakened.
Experimental example 3
The conventional combustion improver using borax as a frit inhibitor was superior to disodium octaborate (Sodium Octaborate) (Na 2 B 8 O 13 ) The content of boron (B) which is a main softening component of the frit used as a combustion improver for frit inhibitors is small, and disodium octaborate (Sodium Octaborate) (Na 2 B 8 O 13 ) Contains more than 10% boron based on the mole ratio.
The borax has a 20 ℃ reference solubility of about 3%, is low, and in order to increase its solubility, it is necessary to first dissolve caustic soda, caustic potash, etc. to increase its solubility, and disodium octaborate (Sodium Octaborate) (Na 2 B 8 O 13 ) Up to 22.3% at 20 c and very high solubility, there is the advantage of not requiring the addition of sodium hydroxide (NaOH caustic) or potassium hydroxide (KOH).
This advantage can be further improved by disodium octaborate (Sodium Octaborate) (Na 2 B 8 O 13 ) To demonstrate this, the following experiment was performed. Borax and disodium octaborate (Sodium Octaborate) (Na) 2 B 8 O 13 ) Respectively dissolve to 20After saturated solubility at c, the additive was prepared using the remaining raw materials. Thereafter, the surface of the frit produced after combustion at 900 ℃ after mixing coal and additives at a 1:1 ratio was observed by SEM magnification of about 100 times.
Experimental results show that disodium octaborate (Sodium Octaborate) (Na 2 B 8 O 13 ) A large amount of the crystallized boron compound shown in fig. 4 was observed on the surface of the frit of the coal, and micropores, which were judged to be generated during the oxygen release, were found on the surface.
During the accumulation of molten frit on the surface of boron compound, boron compound crystals weaken the bond between the frits, during which the bond of oxygen contained in the boron compound is broken, and voids are generated by traces of released oxygen during the release of oxygen, which also becomes a factor that causes the bond of the frit to weaken. In contrast, when the borax-based frit inhibitor is used, the surface of the frit formed after the combustion by applying the combustion improver takes a smooth form, and not only does the form of voids not appear, but also boron compound crystals cannot be found, which can be confirmed by the picture shown in fig. 5.
As is confirmed from the above examples, the combustion improver according to the present invention has the effect of inducing complete combustion in a short period of time, reducing the concentration of combustion exhaust gas and improving the acid making ability while suppressing the growth of frit in a combustion furnace, and dramatically improving the convenience of operation of the combustion furnace, adding a silica component to a dissolving agent, suppressing the formation of frit, reducing the hardness of frit, and weakening the bonding force of frit when the burned matter is converted into frit, preventing personal accidents caused by the drop of frit.
As described above, according to the technical ideas of the combustion improver having a frit softening component and the method of preparing the same of the present invention, although specifically described in the preferred embodiments, it should be noted that the above embodiments are for illustration and not limitation. It is obvious to those skilled in the art that various modifications and changes can be made within the technical spirit of the present invention, and therefore, such modifications and changes should be included in the appended claims.

Claims (2)

1. A combustion improver having a frit softening component, the combustion improver comprising a dissolving agent, a frit inhibitor for inducing complete combustion and producing a frit inhibiting effect, a stabilizer for preventing decomposition of an oxygen-containing substance and improving drug permeation capacity on the surface of an burned object to activate combustion reaction, an oxygen supply agent for releasing oxygen upon permeation into a fuel and thermal reaction to increase combustion speed and combustion efficiency, the combustion improver having a frit softening component characterized in that,
the dissolving agent is an aqueous solution of 1 or more selected from silicide, sodium hydroxide (NaOH), potassium hydroxide (KOH), and is mixed with 50 to 90 parts by weight of water to 6 parts by weight or less, and the frit inhibitor contains no Na classified as a toxic substance 2 B 4 Further used is a boron compound selected from potassium pentaborate (KB) having better solubility and boron mass ratio than borax 5 O 8 ) Potassium tetraborate tetrahydrate (K) 2 B 4 O 7 ) Calcium tetraborate (CaB) 4 O 7 ) Sodium pentaborate (NaB) 5 O 8 ) Sodium hexaborate (Na) 2 B 6 O 10 ) Disodium octaborate (Na) 2 B 8 O 13 ) More than 1 of (C) is used by dissolving 2 to 20 parts by weight at normal temperature, and the stabilizer is selected from ethylene glycol (C) 2 H 6 O 2 ) Propane-1,2-diol (C) 3 H 8 O 2 ) Glycerol (C) 3 H 8 O 3 ) Ethylamine (C) 2 H 5 NH 2 ) Diethylamine (C) 4 H 11 N), triethylamine (C) 6 H 15 N), 2-aminoethanol (C) 2 H 7 NO), diethanolamine (C) 4 H 11 NO 2 ) Triethanolamine (C) 6 H 15 NO 3 ) More than 1 of (3) and further 5 to 10 parts by weight of hydrogen peroxide (H) 2 O 2 ) Further, 3 to 20 parts by weight are used.
2. A method of producing a combustion improver having a frit softening component for inhibiting growth of a frit in a combustion chamber, the method comprising:
a first step of mixing a dissolving agent in water, wherein the dissolving agent is dissolved by adding 6 parts by weight or less of the dissolving agent to 50 to 90 parts by weight of water using 1 or more selected from silicide, sodium hydroxide (NaOH), and potassium hydroxide (KOH);
a second step of dissolving Na, which is classified as a toxic substance, in the mixed solution prepared in the first step 2 B 4 A frit inhibitor which is a substitute for a material containing no Na classified as a toxic material 2 B 4 Further used is a boron compound selected from potassium pentaborate (KB) having better solubility and boron mass ratio than borax 5 O 8 ) Potassium tetraborate tetrahydrate (K) 2 B 4 O 7 ) Calcium tetraborate (CaB) 4 O 7 ) Sodium pentaborate (NaB) 5 O 8 ) Sodium hexaborate (Na) 2 B 6 O 10 ) Disodium octaborate (Na) 2 B 8 O 13 ) More than 1 of the above are dissolved in 2 to 20 weight parts at normal temperature,
a third step of using a stabilizer selected from ethylene glycol (C) 2 H 6 O 2 ) Propane-1,2-diol (C) 3 H 8 O 2 ) Glycerol (C) 3 H 8 O 3 ) Ethylamine (C) 2 H 5 NH 2 ) Diethylamine (C) 4 H 11 N), triethylamine (C) 6 H 15 N), 2-aminoethanol (C) 2 H 7 NO), diethanolamine (C) 4 H 11 NO 2 ) Triethanolamine (C) 6 H 15 NO 3 ) More than 1 of (5) are added into the mixed solution in the second stepUp to 10 parts by weight of the total amount of the components,
a fourth step of releasing oxygen when the mixed liquid prepared in the third step permeates into the fuel to react with heat, and an oxygen supply agent for increasing a combustion speed and a combustion efficiency using hydrogen peroxide (H) 2 O 2 ) 3 to 20 parts by weight of the mixed solution of the third step is added.
CN202210373475.XA 2022-04-11 2022-04-11 Combustion improver with frit softening component and preparation method thereof Pending CN116925830A (en)

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