CN101270311B - Grinding burning-rate accelerator for coal, preparation method and application thereof - Google Patents

Grinding burning-rate accelerator for coal, preparation method and application thereof Download PDF

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Publication number
CN101270311B
CN101270311B CN200710087182A CN200710087182A CN101270311B CN 101270311 B CN101270311 B CN 101270311B CN 200710087182 A CN200710087182 A CN 200710087182A CN 200710087182 A CN200710087182 A CN 200710087182A CN 101270311 B CN101270311 B CN 101270311B
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coal
weight parts
weight
oil
rate accelerator
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CN101270311A (en
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卢英进
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Beijing Guocheng Huanwang Electromechanical Equipment Co., Ltd.
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BEIJING GUOCHENG HUANWANG ELECTROMECHANICAL EQUIPMENT Co Ltd
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Abstract

The invention relates to a coal mill-supporting combustion improver, and a preparation method and application thereof. The coal mill-supporting combustion improver is prepared with the following materials by weight: 45 to 55 portions of nonpolar lipophilic mineral oil, 19 to 23 portions of lipophilic vegetable oil, 16 to 20 portions of emulsifying agent, and 9 to 14 portions of hydrophilic surfactant. The coal mill-supporting combustion improver has strong diffusibility and permeability. The hydrophilic surfacant in the coal mill-supporting combustion improver is a nonpolar surfactant, and has weak dispersibility over lipophilic mixture. Accordingly, with the help of the emulsifying agent, the property of lipophilic substance is reduced, and the quality of combustion is improved.

Description

Grinding burning-rate accelerator for coal
Technical field
The present invention relates to use water-in-oil-type grinding burning-rate accelerator for coal at coal pulverizing and combustion catalysis.
Background technology
The resource-constrained of coal in the world, and storage capacity is in continuous minimizing, society increases the increasing demand of coal, the trend that coal price also rises steadily.Such reality is sought after economizing on coal on the one hand, requires on the other hand to take low-quality coal can replace high-quality coal.
The basic way that addresses these problems is; At first, reduce the fineness of coal dust; Secondly, promote the burning of coal dust, therefore improve the utilising efficiency of coal.
In order to solve first problem, a lot of in recent years researchists are attempting various methods, such as; Transform coal pulverized coal preparation system, firing system or introduce some new coal powder manufacturing apparatus and combustion equipment.
But these measures are very undesirable at economic aspect, such as; Introduce new installation, also have puzzlement such as a little funds or because the addition of various ignition dopes is too much or cost is high, so can not utilize widely.
In addition, some researchists research and develop and promote to add burning and the ignition dope of economizing on coal it to burning and use coal, aspect economizing on coal, have obtained some achievements.But the addition of ignition dope of having studied invention is too much, aspect interpolation, does not also solve addition means, so in fact nonsensical.The coal combustion-promoting agents of research invention so far all is solid particulates.
Such as; The coal combustion-promoting agents of producing in some coal combustion-promoting agents factory is to have used length through a lot of tests, but its addition is each ton coal 3%, and promptly each ton coal adds 30 kilograms ignition dope.So its traffic capacity is quite a lot of, need a lot of freight charges; Secondly, because its addition is too much,, need a lot of labours and expense at a large amount of lands used that make of coal that use then so be difficult to confirm its addition.
Particularly use the unit (fuel-burning power plant) of coal dust can not use such ignition dope certainly in a large number, so be unwilling to use.Generally speaking, regarding as does not have use value, can only do experiment in the factory that uses coal dust, in fact cannot use.At last, coal dust industry (such as; The heat power plant boiler that 50,000 KW-100,000 KW is above) in, adds ignition dope, append a lot of electric power of consumption when pulverizing, so there is not benefit economically.
Such practical demand is the appearance of material benefit, product innovation easy to use more economically, that is, provide a kind of and need not transform or introduce new installation and reduce fineness of pulverized coal and promote the incendiary ignition dope just to become the task of top priority.
Summary of the invention
One of the object of the invention provides a kind ofly need not be transformed or introduce new installation and to reduce fineness of pulverized coal, diffustivity and penetration property very strong and promote the incendiary grinding burning-rate accelerator for coal.
Above-mentioned purpose of the present invention reaches through following technical scheme:
A kind of grinding burning-rate accelerator for coal is prepared from following proportion raw material, nonpolarity oleophilicity MO 45~55 weight parts, oleophilicity vegetables oil 19~23 weight parts, emulsifying agent 16~20 weight parts, hydrophilic surfactant active's 9~14 weight parts.
A kind of optimal technical scheme is characterized in that, said nonpolarity oleophilicity MO is former oily bitumen, coal liquefaction pitch, drop slag, combustion oil, heavy oil, diesel oil, light oil, lubricating oil, machinery oil, waste oil or artificial asphalt.
A kind of optimal technical scheme is characterized in that, said oleophilicity vegetables oil is soya-bean oil preferably, loose charcoal oil, plam oil, peanut oil or Viscotrol C.
A kind of optimal technical scheme is characterized in that, the component of said emulsifying agent and proportioning are: paraffin 17-23 weight parts; Naphthols 1~4 weight part, Triple Pressed Stearic Acid and/or stearate 1~5 weight part, polyvinyl alcohol 1~3 weight part; Dipropyl amine 3~6 weight parts, X 2073 0.5~1.5 weight part, sulfonated humic acid sodium 3~7 weight parts; Hydramine 2~6 weight parts, water 50-60 weight parts.
A kind of optimal technical scheme is characterized in that, said hydrophilic surfactant active is formed by following feedstock production: the oleophilicity vegetables oil of 1~3 weight part, the nonylcarbinol of 0.5~1 weight part, 33%~34% sodium hydroxide solution 13-20 weight parts.
Beneficial effect:
Grinding burning-rate accelerator for coal of the present invention is material benefit, easy to use more economically, need not transform or introduce new installation and just can reduce fineness of pulverized coal, can promote burning and diffustivity and penetration property very strong.
Another object of the present invention provides a kind of preparation method of above-mentioned grinding burning-rate accelerator for coal.
Above-mentioned purpose of the present invention reaches through following technical scheme:
A kind of preparation method of grinding burning-rate accelerator for coal, its step is following:
1. emulsifying agent manufacturing
The weight ratio of each composition of emulsifying agent is: paraffin 17-23 weight parts, naphthols 1~4 weight part, Triple Pressed Stearic Acid and/or stearate 1~5 weight part; Polyvinyl alcohol 1~3 weight part; Dipropyl amine 3~6 weight parts, X 2073 0.5~1.5 weight part, sulfonated humic acid sodium 3~7 weight parts; Hydramine 2~6 weight parts, water 50-60 weight parts;
In water, add above-mentioned other component except that naphthols earlier, be warming up to 100 ℃, stir, kept 1-2 hour, solute is dissolved fully, add naphthols then; Continue to stir,, get emulsifier solution until the naphthols dissolving;
2. hydrophilic surfactant active's preparation
The oleophilicity vegetables oil of 1~3 weight part and the nonylcarbinol of 0.5~1 weight part are mixed, add 33%~34% sodium hydroxide solution 13-20 weight parts, heated and stirred under 100 ℃ of temperature forms yellow solid, is dissolved in water, and forms the hydrophilic surfactant active;
The step of 3. getting 16~20 weight parts 1. gained emulsion and 9~14 weight parts step 2. the hydrophilic surfactant active of gained mix, emulsion;
4. with step 3. emulsion and the oleophilicity vegetables oil of 19~23 weight parts and the nonpolarity oleophilicity MO of 45-55 weight part of gained, mix, grinding burning-rate accelerator for coal.
Another object of the present invention provides the application of above-mentioned grinding burning-rate accelerator for coal.
Above-mentioned purpose of the present invention reaches through following technical scheme:
The step that grinding burning-rate accelerator for coal provided by the invention is put into the coal pulverized coal preparation system is following;
Be positioned at the storage facilities of feeder belt below; It is connected with the intermediate storage device that is positioned at feeder belt top through pipeline; Said intermediate storage device again through pipeline be connected with the administration device of band WT-MSR between the feeder belt at it; There is outlet said administration device lower end, and grinding burning-rate accelerator for coal flows into coal mill through this outlet to be mixed with coal.
Said storage facilities is the storage tank that is provided with attemperator.
The intermediate storage device is in order to put into grinding burning-rate accelerator for coal the coal pulverized coal preparation system, and being installed as the position higher than feeder to it is the input case (disclosing) of giving nature streaming band WT-MSR for regular supply.
Grinding burning-rate accelerator for coal addition of the present invention is a 300-1200 gram/ton coal.
Beneficial effect:
The grinding burning-rate accelerator for coal diffustivity and the penetration property of the present invention's preparation are strong.Contain nonpolarity surfactant in hydrophilic surfactant active's solution in the grinding burning-rate accelerator for coal of the present invention; Therefore, more weak to the dispersiveness of oleophilicity mixture, so under the help of emulsifying agent; Can reduce the character of lipophilicity substance, also improve the incendiary quality more.
Its action principle is following:
At first, grinding burning-rate accelerator for coal of the present invention can be refined into 40-60 micron particle size with coal dust, is beneficial to burning;
Secondly, grinding burning-rate accelerator for coal of the present invention makes the incendivity that adsorb easily in charcoal crude granule surface pore, slit in the coal, diffusion improves the charcoal element again.
Also have; Grinding burning-rate accelerator for coal of the present invention can suppress to hinder charcoal crude granule incendiary mineral substance to be adsorbed on particle surface; But also suppress between the charcoal crude granule; Mutual coagulation mutually between charcoal crude granule and the mineral particle improves the comminuted of charcoal crude granule, improves the incendivity of coal with the activity of grinding burning-rate accelerator for coal.
Generally speaking, grinding burning-rate accelerator for coal of the present invention is regardless of the kind and the quality of coal, with the fineness of pulverized coal only size of accomplishing to burn, helps to catch fire, and therefore can be widely used at coal dust and utilize industry.
Through accompanying drawing and embodiment the present invention is further specified below, but and do not mean that restriction protection domain of the present invention.
Description of drawings
Fig. 1 is the structural representation of the embodiment that uses of the present invention.
Embodiment
Embodiment 1
A kind of grinding burning-rate accelerator for coal is prepared from following proportion raw material, 45 kilograms combustion oil, 23 kilograms soya-bean oil, 20 kilograms emulsifying agent, 15 kilograms hydrophilic surfactant active.
Its preparation process is following:
1. emulsifying agent manufacturing
The weight ratio of each composition of emulsifying agent is: 17 kilograms in paraffin, 1 kilogram of naphthols, 1 kilogram of Triple Pressed Stearic Acid, 1 kilogram of polyvinyl alcohol, 3 kilograms of dipropyl amines, 0.5 kilogram of X 2073,3 kilograms in sulfonated humic acid sodium, 2 kilograms of hydramine, 60 kilograms in water;
In water, add above-mentioned other component except that naphthols earlier, be warming up to 100 ℃, stir, kept 1-2 hour, solute is dissolved fully, add naphthols then; Continue to stir,, get emulsifier solution until the naphthols dissolving;
2. hydrophilic surfactant active's preparation
The nonylcarbinol of 1 kilogram oleophilicity vegetables oil and 1 kilogram is mixed, add 13 kilograms of 33%~34% sodium hydroxide solutions, heated and stirred under 100 ℃ of temperature; Form yellow solid; Be dissolved in water, form the hydrophilic surfactant active, wherein contain fatty acid sodium salt and nonylcarbinol sodium salt;
3. get 20 kilograms step 1. gained emulsion and 14 kilograms step 2. the hydrophilic surfactant active of gained mix, emulsion;
4. with step 3. emulsion and 15 kilograms the soya-bean oil and 45 kilograms the combustion oil of gained, mix, grinding burning-rate accelerator for coal 1.
Use: as shown in Figure 1; Grinding burning-rate accelerator for coal of the present invention is contained in the storage tank that is arranged in feeder belt below; It is connected with the intermediate storage jar that is positioned at feeder belt top through pipeline; Said intermediate storage jar again through pipeline be connected with the dispensing kit of band volume pump between the feeder belt at it, there is outlet said dispensing kit lower end, grinding burning-rate accelerator for coal 1 flows into coal mill through this outlet to be mixed with coal.
Embodiment 2
A kind of grinding burning-rate accelerator for coal, its preparation process is following:
A kind of grinding burning-rate accelerator for coal is prepared from following proportion raw material, 50 kilograms machinery oil, 20 kilograms loose charcoal oil, 18 kilograms emulsifying agent, 12 kilograms wetting ability interfacial agent.
1. emulsifying agent manufacturing
The weight ratio of each composition of emulsifying agent is: 19 kilograms in paraffin, 2 kilograms of naphthols, 3 kilograms of Triple Pressed Stearic Acid, 2 kilograms of polyvinyl alcohols, 4 kilograms of dipropyl amines, 1 kilogram of X 2073,5 kilograms in sulfonated humic acid sodium, 5 kilograms of hydramine, 59 kilograms in water;
In water, add above-mentioned other component except that naphthols earlier, be warming up to 100 ℃, stir, kept 1-2 hour, solute is dissolved fully, add naphthols then; Continue to stir,, get emulsifier solution until the naphthols dissolving;
2. hydrophilic surfactant active's preparation
1.5 kilograms loose charcoal oil and 0.6 kilogram nonylcarbinol are mixed 16 kilograms of the sodium hydroxide solutions of adding 33%~34%, heated and stirred under 100 ℃ of temperature; Form yellow solid; Be dissolved in water, form the hydrophilic surfactant active, wherein contain fatty acid sodium salt and nonylcarbinol sodium salt;
3. get 18 kilograms step 1. gained emulsion and 12 kilograms step 2. the hydrophilic surfactant active of gained mix, emulsion;
4. with the step 3. loose charcoal oil of emulsion and 20 kilograms of gained and 50 kilograms machinery oil, mix, grinding burning-rate accelerator for coal 2.
Embodiment 3
A kind of grinding burning-rate accelerator for coal, its preparation process is following:
A kind of grinding burning-rate accelerator for coal is prepared from following proportion raw material, 55 kilograms lubricating oil, 23 kilograms plam oil, 20 kilograms emulsifying agent, 14 kilograms hydrophilic surfactant active.
1. emulsifying agent manufacturing
The weight ratio of each composition of emulsifying agent is: 23 kilograms in paraffin, 4 kilograms of naphthols, 5 kilograms of Triple Pressed Stearic Acid, 3 kilograms of polyvinyl alcohols, 6 kilograms of dipropyl amines, 1.5 kilograms of X 2073es, 7 kilograms in sulfonated humic acid sodium, 6 kilograms of hydramine, 60 kilograms in water;
In water, add above-mentioned other component except that naphthols earlier, be warming up to 100 ℃, stir, kept 1-2 hour, solute is dissolved fully, add naphthols then; Continue to stir,, get emulsifier solution until the naphthols dissolving;
2. hydrophilic surfactant active's preparation
The nonylcarbinol of 2 kilograms plam oils and 0.8 kilogram is mixed, add 16 kilograms of 33%~34% sodium hydroxide solutions, heated and stirred under 100 ℃ of temperature; Form yellow solid; Be dissolved in water, form the hydrophilic surfactant active, wherein contain fatty acid sodium salt and nonylcarbinol sodium salt;
3. get 20 kilograms step 1. gained emulsion and 14 kilograms step 2. the hydrophilic surfactant active of gained mix, emulsion;
4. with step 3. emulsion and 23 kilograms the plam oil and 55 kilograms the lubricating oil of gained, mix, grinding burning-rate accelerator for coal 3.
Embodiment 4
A kind of grinding burning-rate accelerator for coal, its preparation process is following:
A kind of grinding burning-rate accelerator for coal is prepared from following proportion raw material, 55 kilograms former oily bitumen, 23 kilograms peanut oil, 20 kilograms emulsifying agent, 14 kilograms hydrophilic surfactant active.
1. emulsifying agent manufacturing
The weight ratio of each composition of emulsifying agent is: 23 kilograms in paraffin, 4 kilograms of naphthols, 5 kilograms of Triple Pressed Stearic Acid, 3 kilograms of polyvinyl alcohols, 6 kilograms of dipropyl amines, 1.5 kilograms of X 2073es, 7 kilograms in sulfonated humic acid sodium, 6 kilograms of hydramine, 60 kilograms in water;
In water, add above-mentioned other component except that naphthols earlier, be warming up to 100 ℃, stir, kept 1-2 hour, solute is dissolved fully, add naphthols then; Continue to stir,, get emulsifier solution until the naphthols dissolving;
2. hydrophilic surfactant active's preparation
The nonylcarbinol of 2 kilograms peanut oil and 0.8 kilogram is mixed, add 16 kilograms of 33%~34% sodium hydroxide solutions, heated and stirred under 100 ℃ of temperature; Form yellow solid; Be dissolved in water, form the hydrophilic surfactant active, wherein contain fatty acid sodium salt and nonylcarbinol sodium salt;
3. get 20 kilograms step 1. gained emulsion and 14 kilograms step 2. the hydrophilic surfactant active of gained mix, emulsion;
4. with step 3. emulsion and 23 kilograms the peanut oil and 55 kilograms the former oily bitumen of gained, mix, grinding burning-rate accelerator for coal 4.
Embodiment 5
A kind of grinding burning-rate accelerator for coal, its preparation process is following:
A kind of grinding burning-rate accelerator for coal is prepared from following proportion raw material, 55 kilograms drop slag, 23 kilograms Viscotrol C, 20 kilograms emulsifying agent, 14 kilograms hydrophilic surfactant active.
1. emulsifying agent manufacturing
The weight ratio of each composition of emulsifying agent is: 23 kilograms in paraffin, 4 kilograms of naphthols, 5 kilograms of Triple Pressed Stearic Acid, 3 kilograms of polyvinyl alcohols, 6 kilograms of dipropyl amines, 1.5 kilograms of X 2073es, 7 kilograms in sulfonated humic acid sodium, 6 kilograms of hydramine, 60 kilograms in water;
In water, add above-mentioned other component except that naphthols earlier, be warming up to 100 ℃, stir, kept 1-2 hour, solute is dissolved fully, add naphthols then; Continue to stir,, get emulsifier solution until the naphthols dissolving;
2. hydrophilic surfactant active's preparation
The nonylcarbinol of 2 kilograms Viscotrol C and 0.8 kilogram is mixed, add 16 kilograms of 33%~34% sodium hydroxide solutions, heated and stirred under 100 ℃ of temperature; Form yellow solid; Be dissolved in water, form the hydrophilic surfactant active, wherein contain fatty acid sodium salt and nonylcarbinol sodium salt;
3. get 20 kilograms step 1. gained emulsion and 14 kilograms step 2. the hydrophilic surfactant active of gained mix, emulsion;
4. with step 3. emulsion and 23 kilograms the Viscotrol C and 55 kilograms the drop slag of gained, mix, grinding burning-rate accelerator for coal 5.
Embodiment 6
A kind of grinding burning-rate accelerator for coal, its preparation process is following:
A kind of grinding burning-rate accelerator for coal is prepared from following proportion raw material, 55 kilograms heavy oil, 23 kilograms peanut oil, 20 kilograms emulsifying agent, 14 kilograms hydrophilic surfactant active.
1. emulsifying agent manufacturing
The weight ratio of each composition of emulsifying agent is: 23 kilograms in paraffin, 4 kilograms of naphthols, 5 kilograms of Triple Pressed Stearic Acid, 3 kilograms of polyvinyl alcohols, 6 kilograms of dipropyl amines, 1.5 kilograms of X 2073es, 7 kilograms in sulfonated humic acid sodium, 6 kilograms of hydramine, 60 kilograms in water;
In water, add above-mentioned other component except that naphthols earlier, be warming up to 100 ℃, stir, kept 1-2 hour, solute is dissolved fully, add naphthols then; Continue to stir,, get emulsifier solution until the naphthols dissolving;
2. hydrophilic surfactant active's preparation
The nonylcarbinol of 2 kilograms peanut oil and 0.8 kilogram is mixed, add 16 kilograms of 33%~34% sodium hydroxide solutions, heated and stirred under 100 ℃ of temperature; Form yellow solid; Be dissolved in water, form the hydrophilic surfactant active, wherein contain fatty acid sodium salt and nonylcarbinol sodium salt;
3. get 20 kilograms step 1. gained emulsion and 14 kilograms step 2. the hydrophilic surfactant active of gained mix, emulsion;
4. with step 3. peanut oil or the Viscotrol C of emulsion and 23 kilograms of gained and 55 kilograms heavy oil, mix, grinding burning-rate accelerator for coal 6.
The technical characteristic of the grinding burning-rate accelerator for coal that the present invention is prepared such as following table 1:
Table 1
Grinding burning-rate accelerator for coal Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5 Embodiment 6
Proportion: (g/cm 2) 0.94 0.96 0.95 0.98 0.98 0.97
Condensation point (℃) +5 +5 0 +10 +10 +5
Taste The natural oil flavor The oil flavor The oil flavor The natural oil flavor The natural oil flavor The natural oil flavor
Viscosity *(second) 44 55 49 58 58 53
Kinematic viscosity # (mm 2/s) 178 185 181 358 328 251
Form and color The black viscous liquid The deep yellow viscous liquid Yellow viscous liquid The black viscous liquid The black viscous liquid The black viscous liquid
Viscosity *: under 20 ℃ of temperature from the 100ml viscometer elution time (second).
Kinematic viscosity #: under 20 ℃ of temperature, measure with kinematic viscosimeter.
Result of use of the present invention:
The result of use of grinding burning-rate accelerator for coal of the present invention compares test under following condition.
The kibbler specification: small grinder is used in φ 500mm * 500mm test;
Steel ball, forging loading level: 30% of cubic capacity;
Revolution; The 48rpm/ branch;
Coal test portion granularity: below the 7mm;
Test portion amount: 5kg;
Coal kind: day coal-forming;
The pulverizing time: 20 minutes, 30 minutes.
1. according to the grinding effect of pulverizing the time
Table 2
Can find out at table 2; At the grinding burning-rate accelerator for coal of manufacturing of the present invention is that the plain ash content (mineral substance and moisture) with polar material of the charcoal of non-polar substance is well disperseed and adsorbs while emerging all coal dust surface diffusion transfers again in the coal crushing process.
Therefore pulverized coal particle also has coal particles with inhibitory phase mutual coagulation between the mineral substance (ash content) with between the pulverized coal particle, promotes coal to pulverize, its fineness of pulverized coal of more descending, and this is its feature.The test of in small-sized steel ball mill, carrying out is ground very much test again for the basis, and the result catches up with and states unanimity.
2. in same test is ground with steel ball, carried out 30 minutes, it is following that the grinding coal powder size is formed assay:
Table 3 coal powder size is formed
Find out at table 3, reduced the kindling temperature of coal, the following granule content of 60 μ m that improves combustionvelocity and combustion efficacy has improved more than 14%, and the above granule content of the 80 μ m that efficiency of combustion reduces has reduced by 5%.
3. the performance of crushing effect and the check in boiler in the mid-module process of the test
The crushing effect check
Coal-grinding type: single storehouse steel-ball type grinding machine;
Specification: φ 800mm * 1000mm (China national electric heating worker research institute semipilot factory)
Steel ball loading level: coal mill volumetrical 30%;
Utilize the following coal amount of the granularity of coal: 25mm: 30kg;
Coal kind: the coal in colliery, Yangcheng, Chinese Shanxi Province, ash content 18%;
The pulverizing time: 20 minutes.
The crush efficiency check of table 4 grinding burning-rate accelerator for coal
Grinding burning-rate accelerator for coal 3 0.09mm tail over (%) Grinding machine pressure reduction (Pa)
Blank 26.4 1360
Add 3/ ton of coal of 600 gram grinding burning-rate accelerator for coal 19.4 1250
The coal dust and the blank coal dust that add grinding burning-rate accelerator for coal of the present invention contrast, and grinding burning-rate accelerator for coal drops into kibbler together with coal as a result, cross to occur the phenomenon that the grinding machine revolution is special easily, grinding machine pressure reduction significantly descends after 20 minutes.The result has significantly descended than blank fineness of pulverized coal.The coal pulverizer unit-hour output has improved about 15% under the same situation when blank.
4. add the coal dust of pulverizing to grinding burning-rate accelerator for coal 4 of the present invention and carried out the burning product test according to the test of Guodian Inst. of Pyrology semi-plant with dwarf boiler (one dimension flame testing table) in Xi'an in the influence of boiler internal combustion; The interior temperature of the boiler of (when not adding coal grinding burning-rate accelerator 4) coal burning is 1285 ℃ in the time of barren; Temperature when adding coal grinding burning-rate accelerator 4 in the boiler is 1315 ℃, and promptly fire box temperature has improved 30 ℃.
Also have, also on average improved about 50 ℃ in the temperature of the rotary kiln in many cement mill.Such effect is that to also have such effect be to come across according to being the grinding burning-rate accelerator for coal of lining with the surface of coal dust and hole, the slit of all size.As a result, add grinding burning-rate accelerator for coal, clearly appearance is economized on coal in combustion processes.
The influence of 5 pairs of coal burnings of grinding burning-rate accelerator for coal 5. of the present invention
Add grinding burning-rate accelerator for coal of the present invention in the coal dust to and to pulverize, kindling temperature is measured the result and has been descended 30~40 ℃ than blank (using the kindling temperature tester).
6. according to 6 pairs of various corrosion of metal property checks of grinding burning-rate accelerator for coal of the present invention;
In electric heating worker research institute of Xi'an country, through using at heat power plant boiler and other roasting kilns to No. 20 steel, 120rIMoV steel; The T22 steel; The T19 steel, the TP304 steel carries out the corrodibility check test, and the result proves that fully all kinds metal is had no corrosive nature.
7. in coal pulverizer, drop into 9.06% to grinding burning-rate accelerator for coal 6 of the present invention; And carried out oven dry simultaneously; Pulverize simultaneously, in different coal pulverizers, spray into 270~450 ℃ the warm air that adds then, blast, fire, toxic gas danger etc. did not occur.
8. grinding burning-rate accelerator for coal 6 of the present invention adds the coal dust use of pulverizing, and (100MW~200MW), efficiency of combustion has on average improved more than 3% as a result at boiler.
9. grinding burning-rate accelerator for coal of the present invention adds the coal dust of pulverizing in boiler internal combustion result, and fly ash combustible material and slag unburn coal content have reduced about 6~7% than blank.
10. the coal dust that adds grinding burning-rate accelerator for coal of the present invention 6 is in the boiler internal combustion, and the result moves down than barren flame kernel, moves also very smooth.
(11) grinding burning-rate accelerator for coal of the present invention adds in the coal dust, proves to have no influence at various boilers with kiln, stove internal combustion result between long-term, and particularly furnace chamber being belonged to refractory body does not have corrosive nature.
(12) be used in rotary kiln to grinding burning-rate accelerator for coal of the present invention, according to producing cement clinker, C in burning till grog in the cement mill 3The content of S has improved 4~5%, also has the temperature of decomposing furnace to improve 40~50 ℃, and three days intensity of cement clinker have also improved more than the 5MPa.
The grinding burning-rate accelerator for coal scope of application
Grinding burning-rate accelerator for coal is used in all industrial sectors with coal dust, promptly uses in the fuel-burning power plant widely, cement mill, Iron And Steel Plant etc. and all industrial sectors that use coal dust.

Claims (7)

1. a grinding burning-rate accelerator for coal is prepared from following proportion raw material, the nonpolarity oleophilicity MO of 45 ~ 55 weight parts, the oleophilicity vegetables oil of 19 ~ 23 weight parts, the emulsifying agent of 16 ~ 20 weight parts, the hydrophilic surfactant active of 9~14 weight parts; The component of said emulsifying agent and proportioning are: paraffin 17~23 weight parts, naphthols 1~4 weight part, Triple Pressed Stearic Acid and/or stearate 1~5 weight part; Z 150PH 1~3 weight part; Dipropyl amine 3~6 weight parts, X 2073 0.5~1.5 weight part, sulfonated humic acid sodium 3~7 weight parts; Hydramine 2~6 weight parts, water 50~60 weight parts; Said hydrophilic surfactant active is formed by following feedstock production: the oleophilicity vegetables oil of l~3 weight parts, the nonylcarbinol of 0.5~l weight part, 33%~34% sodium hydroxide solution 13-20 weight part.
2. grinding burning-rate accelerator for coal according to claim 1 is characterized in that: said nonpolarity oleophilicity MO is former oily bitumen, coal liquefaction pitch, drop slag, combustion oil, heavy oil, diesel oil, light oil, lubricating oil, waste oil or artificial asphalt.
3. grinding burning-rate accelerator for coal according to claim 2 is characterized in that: said oleophilicity vegetables oil is a soya-bean oil, loose charcoal oil, plam oil, peanut oil or Viscotrol C.
4. grinding burning-rate accelerator for coal, its preparation process is following:
1. emulsifying agent manufacturing
The weight ratio of each composition of emulsifying agent is: paraffin 17~23 weight parts, naphthols 1~4 weight part, Triple Pressed Stearic Acid and/or stearate 1~5 weight part; Z 150PH 1~3 weight part; Dipropyl amine 3~6 weight parts, X 2073 0.5~1.5 weight part, sulfonated humic acid sodium 3~7 weight parts; Hydramine 2~6 weight parts, water 50~60 weight parts;
In water, add above-mentioned other component except that naphthols earlier, be warming up to 100 ℃, stir, kept 1~2 hour, solute is dissolved fully, add naphthols then; Continue to stir,, get emulsifying agent until the naphthols dissolving;
2. hydrophilic surfactant active's preparation
The oleophilicity vegetables oil of l~3 weight parts and the nonylcarbinol of 0.5~l weight part are mixed; Sodium hydroxide solution 13~20 weight parts of adding 33%~34%; Heated and stirred under 100 ℃ of temperature forms yellow solid, is dissolved in water; Form the hydrophilic surfactant active, wherein contain fatty acid sodium salt and nonylcarbinol sodium salt;
The step of 3. getting 16~20 weight parts 1. gained emulsifying agent and 9~14 weight parts step 2. the hydrophilic surfactant active of gained mix, emulsion;
4. with step 3. emulsion and the oleophilicity vegetables oil of 19~23 weight parts and the nonpolarity oleophilicity MO of 45~55 weight parts of gained, mix, grinding burning-rate accelerator for coal.
5. according to each described grinding burning-rate accelerator for coal in the claim 1~3, its step of putting into the coal pulverized coal preparation system is following:
Be positioned at the storage facilities of feeder belt below; It is connected with the intermediate storage device that is positioned at feeder belt top through pipeline; Said intermediate storage device again through pipeline be connected with the administration device of band WT-MSR between the feeder belt at it; There is outlet said administration device lower end, and grinding burning-rate accelerator for coal flows into coal mill through this outlet to be mixed with coal.
6. grinding burning-rate accelerator for coal according to claim 5 is characterized in that: said storage facilities is the storage tank that is provided with attemperator.
7. grinding burning-rate accelerator for coal according to claim 5 is characterized in that: the addition of said grinding burning-rate accelerator for coal is 300~1200 gram/ton coals.
CN200710087182A 2007-03-23 2007-03-23 Grinding burning-rate accelerator for coal, preparation method and application thereof Expired - Fee Related CN101270311B (en)

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CN102304408B (en) * 2011-08-04 2013-06-05 云南泽能科技有限公司 Carbon nanometer combustion improver and preparation method and preparation device thereof
CN103056013B (en) * 2011-10-21 2015-03-25 余柯 Physical counter lubrication technical method for improving milling efficiency of coal mill
CN103773551A (en) * 2014-02-20 2014-05-07 枣庄市荣宝莱建材科技发展有限公司 Liquid combustion improver of coal gangue and preparation method of liquid combustion improver
CN107016176A (en) * 2017-03-24 2017-08-04 杭州电子科技大学 A kind of hybrid intelligent overall boiler burning optimization method
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