CN111575081A - Pulverized coal coke-inhibiting decoking combustion-supporting modified reinforced composite preparation - Google Patents
Pulverized coal coke-inhibiting decoking combustion-supporting modified reinforced composite preparation Download PDFInfo
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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
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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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- 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
- C10L10/12—Use of additives to fuels or fires for particular purposes for improving the cetane number
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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
- C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
- C10L2230/08—Inhibitors
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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
- C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
- C10L2230/22—Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency
Abstract
The invention discloses a pulverized coal coking-inhibiting decoking combustion-supporting modified reinforced composite preparation, which comprises the following raw materials in percentage by mass: 5 to 20 percent of deepening combustion agent, 6 to 15 percent of oxygenation catalyst, 10 to 20 percent of cracking combustion improver, 1 to 10 percent of initiator, 0.5 to 5 percent of penetrating agent, 3 to 10 percent of stabilizing agent, 5 to 15 percent of decoking agent, 2 to 10 percent of modified reinforcing agent, 0.5 to 8 percent of deactivator and 0.2 to 5 percent of regulator. The composite preparation can be applied to the production of power plant boilers, iron-making blast furnaces, cement kilns and coke ovens, and can improve the characteristics of coal powder, improve the ash fusion point of the coal powder, improve the reaction activity of the coal powder and accelerate the combustion efficiency and the combustion rate of the coal powder after being added into raw coal.
Description
Technical Field
The invention relates to the technical field of coal dust treatment in coal burning and coking equipment, in particular to a coal dust coke-inhibiting decoking combustion-supporting modified reinforced composite preparation.
Background
China has abundant coal resources and plays an extremely important role in economic construction, coal-fired equipment accounts for a large proportion in the industrial field, but because of the common practical problems of low ash melting point, high sulfur content, low heat value, large ash content and the like of China coal types, the coal-fired equipment seriously deposits slag, cokes, incompletely burns and has high slag carbon content due to the characteristics of the coal types in production operation, the safe and economic operation of the equipment is seriously influenced, and resources are seriously wasted. Along with the increase of the steel yield year by year in China, the capacity is stably kept in the world first, the demand of metallurgical coke is increased more and more, but the high-quality coking resources in China are deficient, strong-viscosity coal is scarce, the proportion of non-coking coal resources such as weak-viscosity coal and non-viscosity coal is large, the contradiction between supply and demand is increasingly prominent, and the method has important practical significance and strategic significance for improving the coking and coal blending structure and modifying the non-coking coal resources in the coking production by combining the current situation. Therefore, the development of the coking-inhibiting, decoking and flame-retardant modified composite preparation for coal dust has wide prospect and can bring important environmental and economic benefits.
In the areas of Hebei, Sichuan, Gansu and the like in recent years, products with similar effects to those of the invention are developed, but the products have single and some effects, but the effects are not outstanding, the addition amount is large, the manufacturing cost is high, the products are difficult to popularize and apply in production, the products have potential safety hazards in production, and at present, a composite preparation which integrates multiple functions of coke suppression and decoking, combustion supporting and ash removal and modification strengthening is not available at home and abroad.
The existing single-function coal powder additives comprise the following components:
1. the invention patent application (application number is 201610276728.6, application date is 2016.04.29) discloses a pulverized coal boiler decoking agent, which can realize the decoking function, but only considers decoking, has single function, is not deeply analyzed from the coal-fired coking mechanism, can not comprehensively control the coal ash melting point from the source, reduces the generation amount of coke residue, can not achieve the coke inhibiting function, and can not treat both symptoms and root causes;
2. the invention patent application (application No. 02133147.2, application date 2002.10.10) discloses a catalytic combustion improver for pulverized coal injected into a blast furnace and a production process thereof, wherein the combustion improver has a combustion-supporting effect, but the formula contains KMnO4, and the decomposition temperature of KMnO4 is only 240 ℃, so that after the combustion improver is added, a safety hazard exists in a powder making system, and besides, the circulation enrichment in the blast furnace can be caused to generate nodulation due to avoiding K element in an iron-making blast furnace, so that the furnace condition is influenced.
3. The patent application of the invention (application No. 201310026601.5, application No. 2013.01.24) discloses an anthracite pulverized coal modifier and a coal blending coking method using the modifier, but combustion-supporting and energy-saving effects are not considered, the modification operation is complicated, and the blending amount is large.
Disclosure of Invention
The invention aims to provide a pulverized coal coke-inhibiting decoking combustion-supporting modified reinforced composite preparation, in particular to a composite preparation applied to the production of power plant boilers, iron-making blast furnaces, cement kilns and coke ovens.
In order to achieve the purpose, the invention provides the following technical scheme:
a pulverized coal coking-inhibiting decoking combustion-supporting modified reinforced composite preparation comprises the following raw materials in percentage by mass: 5 to 20 percent of deepening combustion agent, 6 to 15 percent of oxygenation catalyst, 10 to 20 percent of cracking combustion improver, 1 to 10 percent of initiator, 0.5 to 5 percent of penetrating agent, 3 to 10 percent of stabilizing agent, 5 to 15 percent of decoking agent, 2 to 10 percent of modified reinforcing agent, 0.5 to 8 percent of deactivator and 0.2 to 5 percent of regulator.
As a further scheme of the invention: the composite material specifically comprises the following raw materials in percentage by mass: 18 percent of deepening combustion agent, 15 percent of oxygenation catalyst, 20 percent of cracking combustion improver, 7 percent of initiator, 5 percent of penetrating agent, 5 percent of stabilizing agent, 15 percent of decoking agent, 2 percent of modified reinforcing agent, 8 percent of deactivator and 5 percent of regulator.
As a further scheme of the invention: the composite material specifically comprises the following raw materials in percentage by mass: 5 percent of deepening combustion agent, 14.5 percent of oxygenation catalyst, 19.5 percent of cracking combustion improver, 10 percent of initiator, 4.5 percent of penetrating agent, 10 percent of stabilizing agent, 14.5 percent of decoking agent, 10 percent of modification strengthening agent, 7.5 percent of deactivator and 4.5 percent of regulator.
As a further scheme of the invention: the composite material specifically comprises the following raw materials in percentage by mass: 20% of deepening combustion agent, 12% of oxygenation catalyst, 15% of cracking combustion improver, 9% of initiator, 0.5% of penetrating agent, 10% of stabilizing agent, 15% of decoking agent, 10% of modified reinforcing agent, 3.5% of deactivator and 5% of regulator.
As a further scheme of the invention: the deepened combustion agent is composed of one or more than one of activated silicon, activated magnesium oxide and activated aluminum oxide; the oxygenation catalyst is composed of one or more of barium manganate, manganese oxide and ferrocene.
As a further scheme of the invention: the cracking combustion improver consists of one or more of boron magnesium powder, borax and acrylamide; the initiator is composed of one or more of alkoxyamine, carbazide and cyclohexylamine.
As a further scheme of the invention: the penetrating agent consists of one or more of copper nitrate, cerium nitrate, lanthanum nitrate and neodymium oxide; the stabilizer is composed of one or a mixture of two of titanium dioxide and manganese dioxide.
As a further scheme of the invention: the decoking agent is composed of one or more than one of active calcium oxide, calcium nitrate, magnesium carbonate and calcium propionate; the modified reinforcer is composed of one or more of boric anhydride, boric acid, boron oxide and carboxymethyl cellulose.
As a further scheme of the invention: the deactivator is composed of one or more of cobalt sulfate, manganese sulfate and sulfonated cobalt phthalocyanine.
As a further scheme of the invention: the regulator is composed of one or more of refined adipic acid, citric acid, succinic acid and DBA.
Compared with the prior art, the invention has the beneficial effects that: the composite preparation is added into raw coal fed into a boiler, so that the coal dust melting point can be effectively improved, coking on the heating surface of the boiler is obviously inhibited, the raw coal and the formed old coke slag are subjected to chemical reaction, and the raw coal is adsorbed and permeated into a coke layer to be subjected to dehydroxylation expansion micro-explosion and perform targeted blasting, compact holes are formed in a coke block, hard coke becomes crisp and powdery and automatically falls off, or the hard coke falls off by means of a soot blowing device and a flue gas shearing knife, and the effects of inhibiting coke and removing coke are achieved;
the composite preparation is added into blast furnace coal powder injection, so that the combustion efficiency and the combustion speed of the coal powder can be obviously accelerated, the ignition temperature of the coal powder is reduced, the coal powder is promoted to be fully combusted in a tuyere raceway, coking is avoided, the problem of tuyere burning loss is effectively solved, the generation amount of unburned coal powder is reduced, the fluidity of iron slag is enhanced, the permeability and the liquid permeability of the blast furnace are enhanced, and the stable operation of the furnace condition is promoted;
in the process of producing coal powder for combustion in a rotary kiln in the cement industry, the phenomena of skinning and coking are easy to form, the energy consumption is high, the production efficiency is low, the solid energy consumption can be reduced by adding the composite preparation in the coal powder in the decomposing furnace process, the yield is increased, the environmental pollution is reduced, the clinker quality is improved, and the equipment operation period is prolonged;
in the coal blending link of coke production in the coking industry, weakly caking coal and non-caking coal are mixed with the composite preparation at normal temperature to form modified coal, so that the caking property of the modified coal is enhanced, the modified coal can account for 20-60% of the total amount of coking coal blending, the modified coal can replace coking coal, fat coal and gas coal, and the coke produced by a coke oven according to the conventional process completely meets the standard requirement, thereby greatly reducing the production cost of coking enterprises and widening the coal resources for coal blending and coking.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
Example 1: a pulverized coal coking-inhibiting and decoking combustion-supporting modified reinforced composite preparation specifically comprises the following raw materials in percentage by mass: 18 percent of deepening combustion agent, 15 percent of oxygenation catalyst, 20 percent of cracking combustion improver, 7 percent of initiator, 5 percent of penetrating agent, 5 percent of stabilizing agent, 15 percent of decoking agent, 2 percent of modified reinforcing agent, 8 percent of deactivator and 5 percent of regulator.
Wherein the deepening combustion agent consists of 23 percent of activated silicon and 77 percent of activated magnesium oxide; the oxygen increasing catalyst consists of 44% of barium manganate and 56% of manganese oxide. The cracking combustion improver consists of boron-magnesium powder; the initiator consists of an alkoxyamine. The penetrant consists of 33% of copper nitrate, 24% of cerium nitrate and 43% of neodymium oxide; the stabilizer consists of titanium dioxide. The decoking agent consists of 63% of active calcium oxide and 37% of calcium nitrate; the modification enhancer consists of 34% of boric anhydride and 66% of boric acid. The deactivator is composed of cobalt sulfate. The regulator consists of refined adipic acid.
The preparation method of the pulverized coal coke-inhibiting decoking combustion-supporting modified reinforced composite preparation comprises the following steps: the method comprises the steps of putting a deepening combustion agent, an oxygenation catalyst, a cracking combustion improver, an initiator, a penetrating agent, a stabilizer, a decoking agent, a modification enhancer, a deactivator and a regulator in a polymerization reaction kettle according to a formula proportion, and uniformly mixing, centrifugally dewatering, drying, grinding and screening to form powdery solid. And (5) automatically filling and packaging the powdery solid into bags to form finished product packages, and storing after the finished product packages are inspected to be qualified.
Example 2: a pulverized coal coking-inhibiting and decoking combustion-supporting modified reinforced composite preparation specifically comprises the following raw materials in percentage by mass: 5 percent of deepening combustion agent, 14.5 percent of oxygenation catalyst, 19.5 percent of cracking combustion improver, 10 percent of initiator, 4.5 percent of penetrating agent, 10 percent of stabilizing agent, 14.5 percent of decoking agent, 10 percent of modification strengthening agent, 7.5 percent of deactivator and 4.5 percent of regulator.
Wherein the deepening combustion agent consists of activated magnesium oxide; the oxygen increasing catalyst is composed of manganese oxide. The cracking combustion improver consists of borax; the initiator consists of carbazide. The penetrant consists of 45% of lanthanum nitrate and 55% of neodymium oxide; the stabilizer consists of manganese dioxide. The decoking agent consists of 53 percent of magnesium carbonate and 47 percent of calcium propionate; the modified reinforcer consists of 63% of boron oxide and 37% of carboxymethyl cellulose. The deactivator consists of sulfonated cobalt phthalocyanine. The regulator consists of 50% of citric acid and 50% of succinic acid.
The preparation method of the pulverized coal coke-inhibiting decoking combustion-supporting modified reinforced composite preparation comprises the following steps: the method comprises the steps of putting a deepening combustion agent, an oxygenation catalyst, a cracking combustion improver, an initiator, a penetrating agent, a stabilizer, a decoking agent, a modification enhancer, a deactivator and a regulator in a polymerization reaction kettle according to a formula proportion, and uniformly mixing, centrifugally dewatering, drying, grinding and screening to form powdery solid.
Example 3: a pulverized coal coking-inhibiting and decoking combustion-supporting modified reinforced composite preparation specifically comprises the following raw materials in percentage by mass: 20% of deepening combustion agent, 12% of oxygenation catalyst, 15% of cracking combustion improver, 9% of initiator, 0.5% of penetrating agent, 10% of stabilizing agent, 15% of decoking agent, 10% of modified reinforcing agent, 3.5% of deactivator and 5% of regulator.
Wherein the deepening combustion agent consists of 21 percent of activated silicon, 35 percent of activated magnesium oxide and 44 percent of activated aluminum oxide; the oxygen increasing catalyst consists of 33% of barium manganate, 35% of manganese oxide and 32% of ferrocene.
The cracking combustion improver consists of 11% of boron-magnesium powder, 38% of borax and 51% of acrylamide; the initiator consists of 39% of alkoxyamine, 41% of carbohydrazine and 20% of cyclohexylamine.
The penetrant consists of 16% of copper nitrate, 14% of cerium nitrate, 30% of lanthanum nitrate and 40% of neodymium oxide; the stabilizer consists of 50% titanium dioxide and 50% manganese dioxide.
The decoking agent consists of 33% of active calcium oxide, 12% of active calcium nitrate, 15% of active magnesium carbonate and 40% of active calcium propionate; the modified reinforcer consists of 27% of boric anhydride, 33% of boric acid, 29% of boron oxide and 11% of carboxymethyl cellulose.
The deactivator is composed of 55% of cobalt sulfate, 24% of manganese sulfate and 21% of sulfonated cobalt phthalocyanine.
The regulator consists of 11% of refined adipic acid, 15% of citric acid, 34% of succinic acid and 40% of DBA.
The preparation method of the pulverized coal coke-inhibiting decoking combustion-supporting modified reinforced composite preparation comprises the following steps: the method comprises the steps of putting a deepening combustion agent, an oxygenation catalyst, a cracking combustion improver, an initiator, a penetrating agent, a stabilizer, a decoking agent, a modification enhancer, a deactivator and a regulator in a polymerization reaction kettle according to a formula proportion, and uniformly mixing, centrifugally dewatering, drying, grinding and screening to form powdery solid.
The composite preparation is added into raw coal fed into a boiler, the dosage of the composite preparation accounts for 0.5-2 ten thousandth of the total amount of the raw coal, the melting point of pulverized coal ash can be effectively improved, coking on a heating surface of the boiler is remarkably inhibited, the composite preparation and formed old coke slag are subjected to chemical reaction, are adsorbed and permeate into a coke layer to perform dehydroxylation expansion micro-explosion, and perform targeted blasting to form compact holes on a coke block, so that hard coke becomes crisp and powdery and automatically falls off, or falls off by means of a soot blower and a flue gas shearing knife, and the effects of inhibiting coke and removing coke are achieved.
The composite preparation is added into the blast furnace coal powder injection, the dosage of the composite preparation accounts for 3-5 thousandth of the total amount of the coal powder injection, the combustion efficiency and the combustion rate of the coal powder can be obviously accelerated, the ignition temperature of the coal powder is reduced, the coal powder is promoted to be fully combusted in a tuyere raceway, the coking is avoided, the problem of tuyere burning loss is effectively solved, the generation amount of unburned coal powder is reduced, the fluidity of iron slag is enhanced, the air permeability and liquid permeability of the blast furnace are enhanced, the stable operation of the furnace condition is promoted, the iron content of the blast furnace is increased by 1-3%, and the coke ratio is reduced by 5-15Kg/t.
In the process of producing coal powder for combustion in a rotary kiln in the cement industry, the phenomenon of skinning and coking is easy to form, so that the energy consumption is high, the production efficiency is low, the composite preparation is added into the coal powder in the decomposing furnace process, the using amount of the composite preparation accounts for 0.5-2 thousandth of the total amount of the coal powder, the solid energy consumption can be reduced by 5-10%, the yield is increased by 1-4%, the environmental pollution is reduced, the clinker quality is improved, and the equipment operation period is prolonged.
In the coal blending link of coke production in the coking industry, the weakly caking coal and the non-caking coal are uniformly mixed with the composite preparation of the invention at normal temperature to form modified coal, the dosage of the composite preparation accounts for 0.5-3% of the total amount of the weakly caking coal and the non-caking coal, the caking property of the composite preparation is enhanced, the modified coal can account for 20-60% of the total amount of the coking coal blending, the modified coal can replace coking coal, fat coal and gas coal, and the coke produced by the conventional process through a coke oven completely meets the standard requirements, thereby greatly reducing the production cost of coking enterprises and widening the coal resources for coal blending and coking.
The compound preparation of the invention has the following addition modes: pouring the bagged composite preparation into a bin of an electromagnetic vibration feeder, wherein the bottom opening of the bin extends into a trough of the electromagnetic vibration feeder, the bin is fixedly connected with the trough, the bottom opening of the bin can leak materials, an electromagnetic damper is arranged at the bottom of the trough, the electromagnetic damper and a coal conveying belt conveyor are controlled to start and stop simultaneously by a control box power supply, so that the composite preparation is uniformly and continuously added according to the coal quantity, no empty window exists, the current frequency of the control box power supply is adjusted according to the composite preparation quantity required by production equipment, the vibration frequency of the electromagnetic damper is controlled by the current frequency, the resonance of the trough and the bin is further connected, the vibration frequency is controlled by the size of the current frequency, the blanking quantity of the composite preparation is further determined, the uniform and continuous addition of the composite preparation is realized by adjusting the angle of a trough port, and the composite preparation falls to the surface layer of coal powder conveyed on the coal conveying belt conveyor, the coal powder added with the composite preparation is subjected to links of coal grinding, pulverization, powder making and the like, and finally enters a combustion chamber for combustion.
The composite preparation is adopted to carry out coke suppression and coke removal treatment on boilers of a Hua-electric Xisai power plant, a Datang-Huayin Jinzhushan power plant and a national electric Zhangshan power plant, the composite preparation is added according to one-ten-thousandth proportion, namely one ton of the composite preparation is added to each ten thousand tons of electric coal, after the composite preparation is used, the coke suppression and coke removal effects are obvious, coking in a burner, a water wall and a combustion preventing zone in the boiler is removed, and the safe and stable operation of a unit is guaranteed.
B, the composite preparation is adopted to carry out blending treatment on blast furnace injection coal of Shanxi Antai steel, Tang steel stainless steel and sunshine steel, the blending amount is controlled to be 3Kg per ton of coal, namely 3Kg of the composite preparation is added to each ton of injection coal, the coke entering a furnace is reduced by 10 Kg than that of iron per ton, the coal injection amount per ton of iron is increased by 8 Kg, and the iron yield is increased by 1.5%.
The composite preparation of the invention is used for adding fuel coal in cement plants in Tangshan and Shandong, the fuel consumption is reduced by 5.2 percent, and the yield is improved by 1.5 percent.
D, the composite preparation is used for coal blending modification coking of the chenchenchentai coking, the Tangshan coking and the left right coking, the crushing strength (M25) of the produced coke is 90 percent, the wear resistance strength (M10) is 8.1 percent, the reactivity CRI28 of the coke and the strength after reaction CSR62 percent, and all indexes of the coke reach the standards of national metallurgical coke quality standards GB/T1996-2003 and GB/T4000-2008.
Fully demonstrated by the application examples, the composite preparation provided by the invention has good effect in coal dust treatment, and is a powerful measure for realizing energy conservation, emission reduction and efficiency reduction.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (10)
1. The pulverized coal coking-inhibiting decoking combustion-supporting modified reinforced composite preparation is characterized by comprising the following raw materials in percentage by mass: 5 to 20 percent of deepening combustion agent, 6 to 15 percent of oxygenation catalyst, 10 to 20 percent of cracking combustion improver, 1 to 10 percent of initiator, 0.5 to 5 percent of penetrating agent, 3 to 10 percent of stabilizing agent, 5 to 15 percent of decoking agent, 2 to 10 percent of modified reinforcing agent, 0.5 to 8 percent of deactivator and 0.2 to 5 percent of regulator.
2. The pulverized coal coking-inhibiting decoking combustion-supporting modified reinforced composite preparation according to claim 1 is characterized by comprising the following raw materials in percentage by mass: 18 percent of deepening combustion agent, 15 percent of oxygenation catalyst, 20 percent of cracking combustion improver, 7 percent of initiator, 5 percent of penetrating agent, 5 percent of stabilizing agent, 15 percent of decoking agent, 2 percent of modified reinforcing agent, 8 percent of deactivator and 5 percent of regulator.
3. The pulverized coal coking-inhibiting decoking combustion-supporting modified reinforced composite preparation according to claim 1 is characterized by comprising the following raw materials in percentage by mass: 5 percent of deepening combustion agent, 14.5 percent of oxygenation catalyst, 19.5 percent of cracking combustion improver, 10 percent of initiator, 4.5 percent of penetrating agent, 10 percent of stabilizing agent, 14.5 percent of decoking agent, 10 percent of modification strengthening agent, 7.5 percent of deactivator and 4.5 percent of regulator.
4. The pulverized coal coking-inhibiting decoking combustion-supporting modified reinforced composite preparation according to claim 1 is characterized by comprising the following raw materials in percentage by mass: 20% of deepening combustion agent, 12% of oxygenation catalyst, 15% of cracking combustion improver, 9% of initiator, 0.5% of penetrating agent, 10% of stabilizing agent, 15% of decoking agent, 10% of modified reinforcing agent, 3.5% of deactivator and 5% of regulator.
5. The pulverized coal coking-inhibiting, decoking, combustion-supporting, modifying and strengthening composite preparation as claimed in claim 1, wherein the deepening combustion agent is composed of one or more of activated silicon, activated magnesium oxide and activated aluminum oxide; the oxygenation catalyst is composed of one or more of barium manganate, manganese oxide and ferrocene.
6. The pulverized coal coking-inhibiting, decoking, combustion-supporting modified and strengthened composite preparation according to claim 1, characterized in that the cracking combustion improver is composed of one or a mixture of more than one of boron-magnesium powder, borax, acrylamide; the initiator is composed of one or more of alkoxyamine, carbazide and cyclohexylamine.
7. The pulverized coal coking-inhibiting, decoking, combustion-supporting, modifying and strengthening composite preparation as claimed in claim 1, wherein the penetrating agent is composed of one or more of copper nitrate, cerium nitrate, lanthanum nitrate and neodymium oxide; the stabilizer is composed of one or a mixture of two of titanium dioxide and manganese dioxide.
8. The pulverized coal coke-inhibiting, coke-removing, combustion-supporting, modifying and strengthening composite preparation according to claim 1, wherein the decoking agent is composed of one or more of activated calcium oxide, calcium nitrate, magnesium carbonate and calcium propionate; the modified reinforcer is composed of one or more of boric anhydride, boric acid, boron oxide and carboxymethyl cellulose.
9. The pulverized coal coke-inhibiting decoking combustion-supporting modified and strengthened composite preparation as claimed in claim 1, wherein the deactivator is composed of one or more of cobalt sulfate, manganese sulfate, and cobalt phthalocyanine sulfonate.
10. The pulverized coal coke-inhibiting decoking combustion-supporting modified and strengthened composite preparation according to claim 1, wherein the modifier is composed of one or more of refined adipic acid, citric acid, succinic acid and DBA.
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