CN110982579A - Boiler coking inhibitor and preparation method thereof - Google Patents
Boiler coking inhibitor and preparation method thereof Download PDFInfo
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- CN110982579A CN110982579A CN201911319289.2A CN201911319289A CN110982579A CN 110982579 A CN110982579 A CN 110982579A CN 201911319289 A CN201911319289 A CN 201911319289A CN 110982579 A CN110982579 A CN 110982579A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS 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
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/10—Treating solid fuels to improve their combustion by using additives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS 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
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/04—Use of additives to fuels or fires for particular purposes for minimising corrosion or incrustation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J9/00—Preventing premature solidification of molten combustion residues
Abstract
The invention discloses a boiler coking inhibitor and a preparation method thereof, and the boiler coking inhibitor comprises the following raw materials in parts by weight: the invention discloses a nitrate compound, borax, heavy oil, boric acid, active rare earth metal powder, modified nano-alumina, a combustion improver, a heat-conducting dispersant, a bulking agent and a corrosion inhibitor, and relates to the technical field of chemical products. The boiler coking inhibitor and the preparation method thereof can realize that the melting temperature of coal ash is increased by adding heavy oil into the inhibitor to form furnace ash which is fragile, powdery and low in adhesion, and is easy to remove, and simultaneously, the aim of changing a crystal nucleus structure and reducing surface tension is well achieved by adding a heat conduction dispersing agent into the inhibitor to quickly initiate crystal growth before a glassy molten phase is formed, ash particles moving along with flue gas form a cracking surface in a coke body, coke is damaged to form a hard continuous body, and the boiler coking inhibitor is easy to remove, so that the boiler coking inhibitor presents easy flowability, fragility and powdery and is easy to remove.
Description
Technical Field
The invention relates to the technical field of chemical products, in particular to a boiler coking inhibitor and a preparation method thereof.
Background
Boiler coking is a common phenomenon in the operation of a coal-fired industrial boiler, and can destroy normal combustion working conditions, reduce boiler output, destroy normal water circulation, cause pipe explosion accidents, cause the blockage of a hearth outlet to force the boiler to be stopped in serious cases, prevent boiler decoking from corroding boiler equipment, form a layer of protective film on a metal surface, reduce corrosion of a heated surface of the boiler, prolong the service life of the boiler, remove the boiler coke, remove old ash residues and coking on the heated surface of the boiler, prevent new coke blocks and accumulated ash from being generated, keep the heated surface clean, reduce thermal resistance, improve the thermal efficiency of the boiler, increase the boiler output, reduce coal consumption, simultaneously avoid fire extinguishing and furnace stopping caused by the boiler coking, prevent the boiler decoking from corroding the boiler equipment, form a layer of protective film on the metal surface, reduce corrosion of the heated surface of the boiler, prolong the service life of the boiler, and contain combustion improver and catalyst, the boiler decoking agent can also reduce the emission of sulfur dioxide, has certain environmental protection effect and is efficient, the using amount of the boiler decoking agent is one ten thousandth to two ten thousandth of the fuel amount, the adding amount is very small, and therefore in order to solve the problem of boiler coking, a coking inhibitor needs to be added into a boiler to conveniently inhibit the boiler coking.
The existing boiler coking inhibitor has poor effect of inhibiting, can not improve the melting temperature of coal ash by adding heavy oil into the inhibitor, coke the inner wall of a boiler to form fragile powdery low-adhesion easy-to-clean furnace dust, can not quickly initiate crystal growth before forming a glassy molten phase by adding a heat conduction dispersant into the inhibitor, change a crystal nucleus structure to reduce surface tension to improve the coking inhibition effect, can not realize the purpose of forming a cracking surface in a coke body to destroy coking to form a hard continuous body, and can not achieve the purpose of physically destroying the combination of furnace slag and coke dust, so that the coking presents the easy mobility, the easy-to-break performance and the powdery performance, thereby bringing great inconvenience to the boiler cleaning work of boiler cleaning personnel.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a boiler coking inhibitor and a preparation method thereof, and solves the problems that the existing boiler coking inhibitor has poor effect of inhibiting, can not improve the melting temperature of coal ash by adding heavy oil into the inhibitor, coke the inner wall of a boiler to form fragile powdery low-adhesion furnace ash which is easy to remove, can not quickly initiate crystal growth before forming a glassy molten phase by adding a heat-conducting dispersant into the inhibitor, change a crystal nucleus structure to reduce surface tension, and improve the coking inhibition effect, can not form a cracking surface in a coke body to destroy coking to form a hard continuous body, and can not physically destroy the combination of slag and coke ash to enable coking to present the purposes of easy flowability, easy fragmentation and powder.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a boiler coking inhibitor comprises the following raw materials in parts by weight: 20-30 parts of nitrate compound, 5-10 parts of borax, 10-20 parts of heavy oil, 5-10 parts of boric acid, 3-5 parts of active rare earth metal powder, 3-5 parts of modified nano alumina, 3-5 parts of combustion improver, 3-5 parts of heat conduction dispersant, 3-5 parts of bulking agent and 3-5 parts of corrosion inhibitor.
Preferably, the nitrate compound is one or more of aluminum nitrate, copper nitrate, ammonium nitrate, potassium nitrate, sodium nitrate, cerium nitrate or barium nitrate in combination.
Preferably, the combustion improver is one or a combination of potassium permanganate, potassium chlorate, potassium perchlorate or manganese oxide.
Preferably, the active rare earth metal powder is one or a combination of samarium powder and lanthanum powder.
Preferably, the bulking agent is one of sodium bicarbonate or ammonium bicarbonate.
Preferably, the corrosion inhibitor is one of benzotriazole, mercaptobenzothiazole or methylbenzotriazole.
Preferably, the heat-conducting dispersant is one or more of magnesium oxide, calcium oxide, aluminum oxide or silicon dioxide.
The invention also discloses a preparation method of the boiler coking inhibitor, which comprises the following steps:
s1, selecting and weighing raw materials: firstly, respectively measuring nitrate compound, borax, heavy oil, boric acid, active rare earth metal powder, modified nano alumina, combustion improver, heat conduction dispersant, bulking agent and corrosion inhibitor in required weight parts by using a batching device, and storing the weighed components in a storage tank for later use;
s2, preparing a base material: sequentially adding the nitrate compound, borax, heavy oil and boric acid which are measured in the step S1 into mixing and stirring equipment, pouring the heat-conducting dispersing agent which is measured in the step S1 into the mixing and stirring equipment, starting a stirring mechanism, and stirring for 30-40min at the rotation speed of 400-600r/min and the temperature of 33-40 ℃ so as to fully mix the nitrate compound, borax, heavy oil, boric acid and the heat-conducting dispersing agent, thereby completing the preparation of the base material;
s3, mixing the inhibitor primary mixture: sequentially adding the active rare earth metal powder and the modified nano alumina which are measured in the step S1 into the base material prepared in the step S2, transferring the mixture into ultrasonic oscillation mixing equipment, starting the oscillation mixing equipment to output power of 300-400W, and carrying out ultrasonic oscillation for 20-30min to fully disperse and mix the active rare earth metal powder and the modified nano alumina auxiliary material in the base material, thereby obtaining an inhibitor primary mixture;
s4, preparation of a boiler coking inhibitor: transferring the inhibitor primary mixture obtained in the step S3 to a mixing and stirring device, sequentially adding the combustion improver, the bulking agent and the corrosion inhibitor which are measured in the step S1 into the mixing and stirring device, and stirring and mixing for 1-2h at the rotation speed of 700-900r/min and the temperature of 25-33 ℃ to complete the preparation of the boiler coking inhibitor;
s5, preparation of boiler coking powder suppression agent: drying the boiler coking inhibitor prepared in the step S4 for 20-30min at the temperature of 45-50 ℃ by drying equipment, then crushing by crushing and screening equipment, screening by a screen of 200 meshes and 300 meshes, and then collecting the screened powder in a centralized manner to obtain the boiler coking inhibitor powder;
s6, post-processing: and (4) bagging and packaging the boiler coking suppression powder prepared in the step (S5) by using packaging equipment, then performing quality inspection, and after the quality inspection is qualified, taking out of a warehouse for sale or warehousing for storage.
(III) advantageous effects
The invention provides a boiler coking inhibitor and a preparation method thereof. Compared with the prior art, the method has the following beneficial effects:
(1) the boiler coking inhibitor and the preparation method thereof comprise the following raw materials in parts by weight: 20-30 parts of nitrate compound, 5-10 parts of borax, 10-20 parts of heavy oil, 5-10 parts of boric acid, 3-5 parts of active rare earth metal powder, 3-5 parts of modified nano alumina, 3-5 parts of combustion improver, 3-5 parts of heat conduction dispersant, 3-5 parts of bulking agent and 3-5 parts of corrosion inhibitor, the melting temperature of coal ash can be improved by adding the heavy oil into the inhibitor to form furnace ash which is fragile, powdery and low in adhesion, and the furnace ash is easy to remove, simultaneously the aims of changing crystal nucleus structure and reducing surface tension by quickly initiating crystal growth before forming a glassy molten phase by adding the heat conduction dispersant into the inhibitor are well achieved, ash particles moving along with smoke form a cracking surface in a coke body, damage coking to form a hard continuous body, are easy to remove, physically damage the combination of the furnace slag and the coke ash, so that the paint is easy to flow, easy to crush and powdery and easy to clean.
(2) The boiler coking inhibitor and the preparation method thereof specifically comprise the following steps: s1, selecting and weighing raw materials: firstly, respectively measuring nitrate compound, borax, heavy oil, boric acid, active rare earth metal powder, modified nano alumina, combustion improver, heat conduction dispersant, bulking agent and corrosion inhibitor in required weight parts by using a batching device, and S2, preparing base materials: sequentially adding the nitrate compound, borax, heavy oil and boric acid measured in the step S1 into a mixing and stirring device, pouring the heat-conducting dispersing agent measured in the step S1 into the mixing and stirring device, and mixing the primary mixture of the inhibitor and the heat-conducting dispersing agent in the step S3: sequentially adding the active rare earth metal powder and the modified nano alumina which are measured in the step S1 into the base material prepared in the step S2, then transferring the mixture into ultrasonic oscillation mixing equipment, and S4, preparing a boiler coking inhibitor: transferring the inhibitor primary mixture obtained in the step S3 to a mixing and stirring device, sequentially adding the combustion improver, the bulking agent and the corrosion inhibitor which are measured in the step S1 into the mixing and stirring device, and S5, preparing boiler coking powder inhibiting agent: drying the boiler coking inhibitor prepared in the step S4 for 20-30min at the temperature of 45-50 ℃ by drying equipment, and carrying out post-treatment in S6: and (4) bagging and packaging the boiler coking suppression powder prepared in the step S5 by using packaging equipment, then performing quality inspection, and after the quality inspection is qualified, taking out the boiler for sale or warehousing for storage.
Drawings
FIG. 1 is a flow chart of the preparation method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the embodiment of the present invention provides three technical solutions: a boiler coking inhibitor and a preparation method thereof specifically comprise the following embodiments:
example 1
A boiler coking inhibitor comprises the following raw materials in parts by weight: the composite material comprises 25 parts of nitrate compound, 7 parts of borax, 15 parts of heavy oil, 7 parts of boric acid, 4 parts of active rare earth metal powder, 4 parts of modified nano aluminum oxide, 4 parts of combustion improver, 4 parts of heat-conducting dispersant, 4 parts of loosening agent and 4 parts of corrosion inhibitor, wherein the nitrate compound is a composition of aluminum nitrate, copper nitrate, ammonium nitrate, potassium nitrate, sodium nitrate, cerium nitrate and barium nitrate, the combustion improver is a composition of potassium permanganate, potassium chlorate, potassium perchlorate and manganese oxide, the active rare earth metal powder is a composition of samarium powder and lanthanum powder, the loosening agent is sodium bicarbonate, the corrosion inhibitor is benzotriazole, and the heat-conducting dispersant is a composition of magnesium oxide, calcium oxide, aluminum oxide and silicon dioxide.
A preparation method of a boiler coking inhibitor specifically comprises the following steps:
s1, selecting and weighing raw materials: firstly, respectively measuring nitrate compound, borax, heavy oil, boric acid, active rare earth metal powder, modified nano alumina, combustion improver, heat conduction dispersant, bulking agent and corrosion inhibitor in required weight parts by using a batching device, and storing the weighed components in a storage tank for later use;
s2, preparing a base material: sequentially adding the nitrate compound, borax, heavy oil and boric acid which are measured in the step S1 into mixing and stirring equipment, pouring the heat-conducting dispersing agent which is measured in the step S1 into the mixing and stirring equipment, starting a stirring mechanism, and stirring for 35min at the rotation speed of 500r/min and the temperature of 36 ℃ to fully mix the nitrate compound, borax, heavy oil, boric acid and the heat-conducting dispersing agent, thereby completing the preparation of the base material;
s3, mixing the inhibitor primary mixture: sequentially adding the active rare earth metal powder and the modified nano alumina which are measured in the step S1 into the base material prepared in the step S2, transferring the mixture into ultrasonic oscillation mixing equipment, starting the oscillation mixing equipment to output the power of 350W, and carrying out ultrasonic oscillation for 25min to fully disperse and mix the active rare earth metal powder and the modified nano alumina auxiliary material in the base material, thereby obtaining an inhibitor primary mixture;
s4, preparation of a boiler coking inhibitor: transferring the inhibitor primary mixture obtained in the step S3 to a mixing and stirring device, sequentially adding the combustion improver, the bulking agent and the corrosion inhibitor which are measured in the step S1 into the mixing and stirring device, and stirring and mixing for 1.5 hours at the rotating speed of 800r/min and the temperature of 29 ℃, thus completing the preparation of the boiler coking inhibitor;
s5, preparation of boiler coking powder suppression agent: drying the boiler coking inhibitor prepared in the step S4 for 25min at the temperature of 47 ℃ by drying equipment, crushing by crushing and screening equipment, screening by a 250-mesh screen, and then collecting the screened powder in a centralized manner to obtain boiler coking inhibiting powder;
s6, post-processing: and (4) bagging and packaging the boiler coking suppression powder prepared in the step (S5) by using packaging equipment, then performing quality inspection, and after the quality inspection is qualified, taking out of a warehouse for sale or warehousing for storage.
Example 2
A boiler coking inhibitor comprises the following raw materials in parts by weight: the composite material comprises, by weight, 20 parts of a nitrate compound, 5 parts of borax, 10 parts of heavy oil, 5 parts of boric acid, 5 parts of active rare earth metal powder, 5 parts of modified nano aluminum oxide, 5 parts of a combustion improver, 5 parts of a heat-conducting dispersant, 5 parts of a loosening agent and 5 parts of a corrosion inhibitor, wherein the nitrate compound is aluminum nitrate, the combustion improver is potassium permanganate, the active rare earth metal powder is samarium powder, the loosening agent is ammonium bicarbonate, the corrosion inhibitor is mercaptobenzothiazole, and the heat-conducting dispersant is magnesium oxide.
A preparation method of a boiler coking inhibitor specifically comprises the following steps:
s1, selecting and weighing raw materials: firstly, respectively measuring nitrate compound, borax, heavy oil, boric acid, active rare earth metal powder, modified nano alumina, combustion improver, heat conduction dispersant, bulking agent and corrosion inhibitor in required weight parts by using a batching device, and storing the weighed components in a storage tank for later use;
s2, preparing a base material: sequentially adding the nitrate compound, borax, heavy oil and boric acid which are measured in the step S1 into mixing and stirring equipment, pouring the heat-conducting dispersing agent which is measured in the step S1 into the mixing and stirring equipment, starting a stirring mechanism, and stirring for 30min at the rotating speed of 400r/min and the temperature of 33 ℃ to fully mix the nitrate compound, borax, heavy oil, boric acid and the heat-conducting dispersing agent, thereby completing the preparation of the base material;
s3, mixing the inhibitor primary mixture: sequentially adding the active rare earth metal powder and the modified nano alumina which are measured in the step S1 into the base material prepared in the step S2, transferring the mixture into ultrasonic oscillation mixing equipment, starting the ultrasonic oscillation mixing equipment to output power of 300W, and carrying out ultrasonic oscillation for 20min to fully disperse and mix the active rare earth metal powder and the modified nano alumina auxiliary material in the base material, thereby obtaining an inhibitor primary mixture;
s4, preparation of a boiler coking inhibitor: transferring the inhibitor primary mixture obtained in the step S3 to a mixing and stirring device, sequentially adding the combustion improver, the bulking agent and the corrosion inhibitor which are measured in the step S1 into the mixing and stirring device, and stirring and mixing for 1h at the rotating speed of 700r/min and the temperature of 25 ℃, thus completing the preparation of the boiler coking inhibitor;
s5, preparation of boiler coking powder suppression agent: drying the boiler coking inhibitor prepared in the step S4 for 20min at the temperature of 45 ℃ by drying equipment, then crushing by crushing and screening equipment, screening by a 200-mesh screen, and then collecting the screened powder in a centralized manner to obtain boiler coking inhibiting powder;
s6, post-processing: and (4) bagging and packaging the boiler coking suppression powder prepared in the step (S5) by using packaging equipment, then performing quality inspection, and after the quality inspection is qualified, taking out of a warehouse for sale or warehousing for storage.
Example 3
A boiler coking inhibitor comprises the following raw materials in parts by weight: 30 parts of nitrate compound, 10 parts of borax, 20 parts of heavy oil, 10 parts of boric acid, 3 parts of active rare earth metal powder, 3 parts of modified nano aluminum oxide, 3 parts of combustion improver, 3 parts of heat-conducting dispersant, 3 parts of loosening agent and 3 parts of corrosion inhibitor, wherein the nitrate compound is barium nitrate, the combustion improver is manganese oxide, the active rare earth metal powder is lanthanum powder, the loosening agent is sodium bicarbonate, the corrosion inhibitor is methyl benzotriazole, and the heat-conducting dispersant is silicon dioxide.
A preparation method of a boiler coking inhibitor specifically comprises the following steps:
s1, selecting and weighing raw materials: firstly, respectively measuring nitrate compound, borax, heavy oil, boric acid, active rare earth metal powder, modified nano alumina, combustion improver, heat conduction dispersant, bulking agent and corrosion inhibitor in required weight parts by using a batching device, and storing the weighed components in a storage tank for later use;
s2, preparing a base material: sequentially adding the nitrate compound, borax, heavy oil and boric acid which are measured in the step S1 into mixing and stirring equipment, pouring the heat-conducting dispersing agent which is measured in the step S1 into the mixing and stirring equipment, starting a stirring mechanism, and stirring for 40min at the rotating speed of 600r/min and the temperature of 40 ℃ to fully mix the nitrate compound, borax, heavy oil, boric acid and the heat-conducting dispersing agent, thereby completing the preparation of the base material;
s3, mixing the inhibitor primary mixture: sequentially adding the active rare earth metal powder and the modified nano alumina which are measured in the step S1 into the base material prepared in the step S2, transferring the mixture into ultrasonic oscillation mixing equipment, starting the ultrasonic oscillation mixing equipment to output power of 400W, and carrying out ultrasonic oscillation for 30min to fully disperse and mix the active rare earth metal powder and the modified nano alumina auxiliary material in the base material, thereby obtaining an inhibitor primary mixture;
s4, preparation of a boiler coking inhibitor: transferring the inhibitor primary mixture obtained in the step S3 to a mixing and stirring device, sequentially adding the combustion improver, the bulking agent and the corrosion inhibitor which are measured in the step S1 into the mixing and stirring device, and stirring and mixing for 2 hours at the rotating speed of 900r/min and the temperature of 33 ℃ to finish the preparation of the boiler coking inhibitor;
s5, preparation of boiler coking powder suppression agent: drying the boiler coking inhibitor prepared in the step S4 for 30min at the temperature of 50 ℃ by drying equipment, then crushing by crushing and screening equipment, screening by a 300-mesh screen, and then collecting the screened powder in a centralized manner to obtain boiler coking inhibiting powder;
s6, post-processing: and (4) bagging and packaging the boiler coking suppression powder prepared in the step (S5) by using packaging equipment, then performing quality inspection, and after the quality inspection is qualified, taking out of a warehouse for sale or warehousing for storage.
Comparative experiment
A chemical industry production enterprise respectively prepares three groups of boiler coking inhibitors by adopting the preparation method of the embodiments 1-3 of the invention, simultaneously selects the coking inhibitors of the same type on the market as a control group, then introduces the four groups of selected inhibitors into the boilers of the same batch for comparison test, respectively records the coking condition in each group of boilers in the test process, and the test results are shown in Table 1.
TABLE 1 comparative experiment test results
As can be seen from Table 1, the coking inhibitor prepared by the preparation method of the embodiment 1 of the present invention has the best inhibition effect, and the coking inhibitor prepared by the preparation methods of the embodiment 2 and the embodiment 3 has the obviously improved inhibition effect compared with the coking condition of the control group, so that the present invention can achieve the purposes of increasing the melting temperature of coal ash by adding heavy oil into the inhibitor, forming furnace ash which is fragile, powdery and low in adhesion, and is easy to remove, simultaneously, rapidly initiating crystal growth before forming a glassy molten phase by adding a heat conduction dispersant into the inhibitor, changing a crystal nucleus structure and reducing surface tension, forming cracking surfaces in a coke body by ash particles moving along with flue gas, destroying coking to form hard continuous bodies, and being easy to remove, and physically destroying slag and coke ash to combine, so as to present easy flowability, easy to crush and powdery, easy to clean.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A boiler coking inhibitor, which is characterized in that: the raw materials comprise the following components in parts by weight: 20-30 parts of nitrate compound, 5-10 parts of borax, 10-20 parts of heavy oil, 5-10 parts of boric acid, 3-5 parts of active rare earth metal powder, 3-5 parts of modified nano alumina, 3-5 parts of combustion improver, 3-5 parts of heat conduction dispersant, 3-5 parts of bulking agent and 3-5 parts of corrosion inhibitor.
2. The boiler coking inhibitor according to claim 1, characterized in that: the nitrate compound is one or a combination of more of aluminum nitrate, copper nitrate, ammonium nitrate, potassium nitrate, sodium nitrate, cerium nitrate or barium nitrate.
3. The boiler coking inhibitor according to claim 1, characterized in that: the combustion improver is one or a combination of more of potassium permanganate, potassium chlorate, potassium perchlorate or manganese oxide.
4. The boiler coking inhibitor according to claim 1, characterized in that: the active rare earth metal powder is one or the combination of samarium powder or lanthanum powder.
5. The boiler coking inhibitor according to claim 1, characterized in that: the bulking agent is one of sodium bicarbonate or ammonium bicarbonate.
6. The boiler coking inhibitor according to claim 1, characterized in that: the corrosion inhibitor is one of benzotriazole, mercapto benzothiazole or methyl benzotriazole.
7. The boiler coking inhibitor according to claim 1, characterized in that: the heat-conducting dispersing agent is one or the combination of more of magnesium oxide, calcium oxide, aluminum oxide or silicon dioxide.
8. A method for preparing the boiler coking inhibitor according to any one of claims 1 to 7, characterized in that: the method specifically comprises the following steps:
s1, selecting and weighing raw materials: firstly, respectively measuring nitrate compound, borax, heavy oil, boric acid, active rare earth metal powder, modified nano alumina, combustion improver, heat conduction dispersant, bulking agent and corrosion inhibitor in required weight parts by using a batching device, and storing the weighed components in a storage tank for later use;
s2, preparing a base material: sequentially adding the nitrate compound, borax, heavy oil and boric acid which are measured in the step S1 into mixing and stirring equipment, pouring the heat-conducting dispersing agent which is measured in the step S1 into the mixing and stirring equipment, starting a stirring mechanism, and stirring for 30-40min at the rotation speed of 400-600r/min and the temperature of 33-40 ℃ so as to fully mix the nitrate compound, borax, heavy oil, boric acid and the heat-conducting dispersing agent, thereby completing the preparation of the base material;
s3, mixing the inhibitor primary mixture: sequentially adding the active rare earth metal powder and the modified nano alumina which are measured in the step S1 into the base material prepared in the step S2, transferring the mixture into ultrasonic oscillation mixing equipment, starting the oscillation mixing equipment to output power of 300-400W, and carrying out ultrasonic oscillation for 20-30min to fully disperse and mix the active rare earth metal powder and the modified nano alumina auxiliary material in the base material, thereby obtaining an inhibitor primary mixture;
s4, preparation of a boiler coking inhibitor: transferring the inhibitor primary mixture obtained in the step S3 to a mixing and stirring device, sequentially adding the combustion improver, the bulking agent and the corrosion inhibitor which are measured in the step S1 into the mixing and stirring device, and stirring and mixing for 1-2h at the rotation speed of 700-900r/min and the temperature of 25-33 ℃ to complete the preparation of the boiler coking inhibitor;
s5, preparation of boiler coking powder suppression agent: drying the boiler coking inhibitor prepared in the step S4 for 20-30min at the temperature of 45-50 ℃ by drying equipment, then crushing by crushing and screening equipment, screening by a screen of 200 meshes and 300 meshes, and then collecting the screened powder in a centralized manner to obtain the boiler coking inhibitor powder;
s6, post-processing: and (4) bagging and packaging the boiler coking suppression powder prepared in the step (S5) by using packaging equipment, then performing quality inspection, and after the quality inspection is qualified, taking out of a warehouse for sale or warehousing for storage.
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| CN111621349A (en) * | 2020-06-11 | 2020-09-04 | 上海甚恒生物科技有限公司 | Anti-coking agent for waste residue boiler and adding method |
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| CN113265292A (en) * | 2021-05-19 | 2021-08-17 | 深圳市明灯科技有限公司 | Inhibitor for treating coking of industrial boiler |
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| CN115418258A (en) * | 2022-09-14 | 2022-12-02 | 滁州智慧城市环保科技有限责任公司 | Boiler coking inhibitor and preparation method thereof |
| CN116355671A (en) * | 2023-05-11 | 2023-06-30 | 深圳市明登科技有限公司 | Boiler coking inhibitor and production process thereof |
| CN117603726A (en) * | 2024-01-17 | 2024-02-27 | 江阴盛源科技有限公司 | Coking inhibitor for ethylene unit cracking furnace and preparation method thereof |
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| CN111575081A (en) * | 2020-05-21 | 2020-08-25 | 河北丰强科技有限公司 | Pulverized coal coke-inhibiting decoking combustion-supporting modified reinforced composite preparation |
| CN111621349A (en) * | 2020-06-11 | 2020-09-04 | 上海甚恒生物科技有限公司 | Anti-coking agent for waste residue boiler and adding method |
| CN112708491A (en) * | 2020-12-15 | 2021-04-27 | 湖北美和科技有限公司 | Coking inhibitor applied to biomass fuel furnace and preparation method thereof |
| CN112708444A (en) * | 2020-12-15 | 2021-04-27 | 湖北美和科技有限公司 | Method for synthesizing coking inhibitor applied to ethylene cracking furnace |
| CN113265292A (en) * | 2021-05-19 | 2021-08-17 | 深圳市明灯科技有限公司 | Inhibitor for treating coking of industrial boiler |
| CN113265292B (en) * | 2021-05-19 | 2022-09-13 | 深圳市明灯科技有限公司 | Inhibitor for treating coking of industrial boiler |
| CN114410395A (en) * | 2022-02-16 | 2022-04-29 | 湖北美和科技有限公司 | Synthesis method of biomass boiler corrosion-inhibition ash cleaning agent |
| CN115418258A (en) * | 2022-09-14 | 2022-12-02 | 滁州智慧城市环保科技有限责任公司 | Boiler coking inhibitor and preparation method thereof |
| CN115418258B (en) * | 2022-09-14 | 2024-03-22 | 滁州智慧城市环保科技有限责任公司 | Boiler coking inhibitor and preparation method thereof |
| CN116355671A (en) * | 2023-05-11 | 2023-06-30 | 深圳市明登科技有限公司 | Boiler coking inhibitor and production process thereof |
| CN117603726A (en) * | 2024-01-17 | 2024-02-27 | 江阴盛源科技有限公司 | Coking inhibitor for ethylene unit cracking furnace and preparation method thereof |
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