CN104789293A - Coal combustion catalyzing and coal-saving agent and preparation method thereof - Google Patents
Coal combustion catalyzing and coal-saving agent and preparation method thereof Download PDFInfo
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- CN104789293A CN104789293A CN201510133293.5A CN201510133293A CN104789293A CN 104789293 A CN104789293 A CN 104789293A CN 201510133293 A CN201510133293 A CN 201510133293A CN 104789293 A CN104789293 A CN 104789293A
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Abstract
The invention relates to a coal combustion catalyzing and coal-saving agent and a preparation method thereof. Firstly, 10 to 30 percent of a retention agent is added into a penetrating agent, temperature is risen to be 50 DEG C, stirring is performed until a system is in a homogeneous phase, and then under the temperature condition of 50 DEG C, 1 to 10 percent of rare earth chloride, 3 to 11 percent of naphthenate, and 5 to 20 percent of acetate are sequentially added. The catalyzing and coal-saving agent provided by the invention has an obvious energy-saving effect on a circulating fluidized bed boiler and a coal-powder boiler in a present power plant, the coal combustion intensity is improved, the coal usage amount under the same generating capacity is lowered effectively, the fuel utilization is improved, the discharge value of CO2 and CO is reduced, energy is saved, discharge is reduced, and real circumstances of high energy consumption and high pollution discharge in thermal power enterprises of China are improved.
Description
Technical field
The present invention relates to coal catalytic combustion additive field, particularly relate to a kind of coal catalyticcombustion coal-saving agent being applied to circulating fluidized-bed and coal-powder boiler.
Background technology
Coal, as fossil oil, in very long geological changes process, because coalfield is subject to the effect of multiple geologic agent, in the difference of coal-forming age, coal-forming hyle, reducing degree, is added various metamorphism and deposits, causing coal in China diversification of varieties.The ature of coal formation of Coal rank varies, and the property differences such as its combustion activity, kindling temperature, combustiblecomponents are huge.Wherein as the important indicator of combustionproperty, the kindling temperature obvious difference of various ature of coal.Such as: the kindling temperature of bituminous coal is at 400 ~ 520 DEG C, and anthracitic kindling temperature then reaches 580 ~ 710 DEG C.In addition, coal volatile matter proportion, ash content proportion, also have great effect to the combustionproperty of coal.In recent years, the coal-saving agent of domestic appearance all adopts material decomposes oxygen release and raising agent explosive spalling to increase the know-why of oxygen mostly, usually mixes with Potcrate, nitrate, potassium permanganate, sodium-chlor, magnesium chloride, magnesium oxide etc.Addition large percentage, addition is generally 1% ~ 3% of coal consumption weight, such as: number of patent application 97105154.2 patent document discloses a kind of coal combustion-promoting agents, with Wingdale, sodium carbonate, Manganse Dioxide etc. for raw material, as the ignition dope of principal constituent.A kind of pulverized coal combustion improver for thermal power plant disclosed in the patent documentation of and for example number of patent application 201110439348.7, using manganese ore, saltpetre, salt of wormwood for the ignition dope as principal constituent.This series products only can be used for old boiler certain effect, does not have positive effect to recently universal high-level efficiency coal-powder boiler, circular fluid bed etc.
Current power plants boiler operation, mainly contains the types such as powder coal stove, circular fluid bed, water-coal slurry furnace, biomass boiler, sludge incinerator.Most thermal power plants, what especially large thermal power plant was the most frequently used is powder coal stove and circular fluid bed.Be seen in power plant's coal-saving agent of report now, technological line adopts material pyrolytic decomposition oxygenation or using the composite heavy metal inorganic salts of nitrate as technique means.Such as: application number 200810017237.5 patent document discloses a kind of coal-saving desulfurization additive for power plant boiler, it is the coal-saving agent calcium ammonium nitrate of certainweight per-cent, SODIUMNITRATE, potassium permanganate, ammonium nitrate, ferric oxide etc. produced as major ingredient.And for example number of patent application: a kind of efficient coal combustion energy-saving combustion adjuvant and preparation method disclosed in the patent documentation of 200810172540.2, adopts ferrocene, ground dolomite, sodium dichromate 99 to be raw material production.This type of coal-saving agent product, containing heavy metal components such as a large amount of chromium, manganese, with after be mixed into cinder, very easily permeate earth's surface, secondary pollution caused to underground water.Meanwhile, along with the application of critical, supercritical combustion equipment and COAL-WATER SLURRY TECHNOLOGY, these class methods just no longer have the desirable effect promoting coal burning utilization ratio, and all need long-term uninterrupted use continuously just can keep effect.
During coal burning in the boiler, the situation of coal and the actual operating mode of boiler also directly affect the efficiency of boiler, such as: the condition such as secondary air proportioning, material air-teturning temperature, a bed thickness in burner hearth when moisture content during coal burning, boiler operatiopn.Under current boiler technology background, new technique means must be adopted to reach the combustion utilization efficiency promoting coal, the object improved coal burning performance, increasing the sensible heat thermal value of coal when burning.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of coal catalyticcombustion coal-saving agent being applied to circulating fluidized-bed and coal-powder boiler and preparation method thereof.
The technical solution used in the present invention is:
A kind of coal burning protectional catalytic agent for coal saving, it is characterized in that, each constituent mass per-cent of described coal burning protectional catalytic agent for coal saving is:
Be detained agent 10% ~ 30%;
Rare earth chloride 1% ~ 10%;
Naphthenate 3% ~ 11%;
Acetate 5% ~ 20%;
Permeate agent 40% ~ 60%.
Described delay agent is high siliceous binding agent.
Described rare earth chloride is one or more in praseodymium chloride, Neodymium trichloride, chlorination rhenium, Cerium II Chloride, Europium trichloride.
Described naphthenate is one or more in calcium naphthenate, magnesium naphthenate, zinc naphthenate, cobalt naphthenate, naphthenic acid lithium.
Described acetate be in ironic acetate, manganous acetate, magnesium acetate, aluminum acetate one or more.
Described permeate agent is deionized water.
A kind of coal burning protectional catalytic agent for coal saving preparation method, it is characterized in that, preparation process is, first delay agent is joined in permeate agent, be warming up to 50 DEG C, the system of being stirred to is homogeneous phase, then under the temperature condition of 50 DEG C, adds rare earth chloride, naphthenate and acetate component successively again.
Described coal burning protectional catalytic agent for coal saving preparation method, after each component adds in its preparation process, adds next component again after fully stirring.
Described coal burning protectional catalytic agent for coal saving, is sprayed on coal travelling belt during application, addition is 0.05% ~ 0.3% of coal quantity.
Described coal burning protectional catalytic agent for coal saving, can stop after using three months continuously adding protectional catalytic agent for coal saving one month, be trapped in the protectional catalytic agent for coal saving component of burner hearth inside, still can keep catalyze coal combustionproperty during application.
Beneficial effect of the present invention: in protectional catalytic agent for coal saving of the present invention, chemical composition promotes oxygen molecule activity, the chemical combustion balance of coal, water, oxygen during adjustment coal burning, reduce coal kindling temperature, reduce coal oxidation endothermic heat of reaction, promote coal burning heat release acting.Simultaneously, coupling is detained agent component and is ensured that this coal burning protectional catalytic agent for coal saving is adsorbed in boiler furnace inwall at certain hour, intermittent use can reach the effect of lasting catalyticcombustion, to the circular fluid bed of current power plant and coal-powder boiler energy-saving effect remarkable, coal burning intensity can be improved, coal usage quantity under the identical generated energy of effective reduction, improves fuel availability, reduces CO
2, CO quantity discharged, energy-saving and emission-reduction, improve the real circumstances that the power consumption of China Thermal Power Enterprises is high, blowdown is many.
Embodiment
Embodiment 1
First by massfraction be 10% the siliceous binding agent of height join in the deionized water of 60%, then be warming up to 50 DEG C, stirring system is to homogeneous phase, then add successively again under 50 DEG C of conditions 2% praseodymium chloride, 2% Neodymium trichloride, 1.6% chlorination rhenium, 6% calcium naphthenate, 3.8% cobalt naphthenate, 6.6% ironic acetate and 8% aluminum acetate, after often kind of component adds, after fully stirring, add next component again.
Embodiment 2
First by massfraction be 15% the siliceous binding agent of height join in the deionized water of 53%, be then warming up to 50 DEG C, stir system to homogeneous phase.Then add successively again under 50 DEG C of conditions 2% Cerium II Chloride, 3.8% praseodymium chloride, 1.7% chlorination rhenium, 3% zinc naphthenate, 6% naphthenic acid lithium, 2.4% ironic acetate, 3.1% magnesium acetate and 10% aluminum acetate, after often kind of component adds, after fully stirring, add next component again.
Embodiment 3
First by massfraction be 25% the siliceous binding agent of height join in the deionized water of 47%, be then warming up to 50 DEG C, stir system to homogeneous phase.Then add successively again under 50 DEG C of conditions 3% Europium trichloride, 2% Neodymium trichloride, 3% Cerium II Chloride, 4% calcium naphthenate, 3% zinc naphthenate, 4% cobalt naphthenate, 4% ironic acetate and 5% magnesium acetate, after often kind of component adds, after fully stirring, add next component again.
Embodiment 4
First by massfraction be 30% the siliceous binding agent of height join in the deionized water of 40%, be then warming up to 50 DEG C, stirring body is tied to form as homogeneous phase.Then add successively again under this temperature condition 2.5% Europium trichloride, 2.5% praseodymium chloride, 5% chlorination rhenium, 3% calcium naphthenate, 6% zinc naphthenate, 1% magnesium naphthenate, 5% ironic acetate and 5% manganous acetate, after often kind of component adds, after fully stirring, add next component again.
Embodiment 5
Raw coal adds coal burning protectional catalytic agent for coal saving prepared by embodiment 1, tests the change of its calorific value with bomb method.
As shown in table 1, raw coal is analyzed with the blank phase combustion case not adding coal-saving agent after adding the coal burning protectional catalytic agent for coal saving of 0.09% embodiment 1 preparation, and with bomb method test calorific value, its calorific value improves 144cal/kg.
Calorific value change before and after the coal burning protectional catalytic agent for coal saving of preparation in table 1 raw coal interpolation embodiment 1
Embodiment 6
Shandong power plant circular fluid bed carries out industrial performance test, under warranty test coal and the basicly stable condition of boiler operatiopn operating mode, the coal burning protectional catalytic agent for coal saving of 0.05% embodiment 2 preparation is added according to the weight percent of consumption coal, boiler runs 30 days continuously, be analyzed with the blank phase combustion case not adding coal-saving agent, after correcting ature of coal and unit load influence of fluctuations, application result shows that gross coal consumption rate reduces 10.49g/kwh.
Table 2 Shandong power plant circular fluid bed adds Commercial application before and after coal burning protectional catalytic agent for coal saving
Embodiment 7
On certain power plant's coal-powder boiler, industrial performance test is carried out in Ningxia, pilot boiler main design parameters is: rated capacity 260t/h, boiler design thermo-efficiency 90.1%, brown coal design pressed by burner, fuel nozzle corner is arranged, often organize fuel nozzle and have 13 air port, 21 air ports and 32 air ports, from top to bottom spout order is followed successively by 3-2-2-1-1-2.
Under warranty test coal and the basicly stable condition of boiler operatiopn operating mode, the coal burning protectional catalytic agent for coal saving of preparation in 0.3% embodiment 4 is added according to the weight percent of consumption coal, boiler operatiopn 30 days, be analyzed with the blank phase combustion case of non-doping, after correcting ature of coal and unit load influence of fluctuations, application result shows that gross coal consumption rate reduces 11.88g/kwh.
Table 3 Shandong power plant coal-powder boiler adds Commercial application before and after coal burning protectional catalytic agent for coal saving
Claims (9)
1. a coal burning protectional catalytic agent for coal saving, is characterized in that, each constituent mass per-cent of described coal burning protectional catalytic agent for coal saving is:
Be detained agent 10% ~ 30%;
Rare earth chloride 1% ~ 10%;
Naphthenate 3% ~ 11%;
Acetate 5% ~ 20%;
Permeate agent 40% ~ 60%.
2. coal burning protectional catalytic agent for coal saving according to claim 1, is characterized in that, described delay agent is high siliceous binding agent.
3. coal burning protectional catalytic agent for coal saving according to claim 1 and 2, is characterized in that, described rare earth chloride is one or more in praseodymium chloride, Neodymium trichloride, chlorination rhenium, Cerium II Chloride, Europium trichloride.
4. coal burning protectional catalytic agent for coal saving according to claim 3, is characterized in that, described naphthenate is one or more in calcium naphthenate, magnesium naphthenate, zinc naphthenate, cobalt naphthenate, naphthenic acid lithium.
5. coal burning protectional catalytic agent for coal saving according to claim 4, is characterized in that, described acetate be in ironic acetate, manganous acetate, magnesium acetate, aluminum acetate one or more.
6. coal burning protectional catalytic agent for coal saving according to claim 5, is characterized in that, described permeate agent is deionized water.
7. the preparation method of a kind of coal burning protectional catalytic agent for coal saving in claim 1 to 6 described in any one, it is characterized in that, preparation process is, first delay agent is joined in permeate agent, be warming up to 50 DEG C, the system of being stirred to is homogeneous phase, then under the temperature condition of 50 DEG C, adds rare earth chloride, naphthenate and acetate component successively again, after each component adds, after fully stirring, add next component again.
8. the application of a kind of coal burning protectional catalytic agent for coal saving in claim 1 to 6 described in any one, is characterized in that, is sprayed on coal travelling belt or coal, and addition is 0.05% ~ 0.3% of coal quantity.
9. the application of a kind of coal burning protectional catalytic agent for coal saving in claim 1 to 6 described in any one, it is characterized in that, continuous use can stop after three months adding protectional catalytic agent for coal saving one month, is trapped in the protectional catalytic agent for coal saving component of burner hearth inside, still can keeps catalyze coal combustionproperty.
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| CN201510133293.5A CN104789293A (en) | 2015-03-25 | 2015-03-25 | Coal combustion catalyzing and coal-saving agent and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057795A (en) * | 2017-03-29 | 2017-08-18 | 合肥天沃能源科技有限公司 | A kind of additive for improving coal combustion efficiency and preparation method thereof |
| RU2791105C1 (en) * | 2022-04-29 | 2023-03-02 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ имени Гагарина Ю.А.) | Coal burning modifier |
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| US20130249457A1 (en) * | 2012-03-26 | 2013-09-26 | GM Global Technology Operations LLC | Methods, systems and apparatus for generating voltage command signals for controlling operation of an electric machine |
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| CN107057795A (en) * | 2017-03-29 | 2017-08-18 | 合肥天沃能源科技有限公司 | A kind of additive for improving coal combustion efficiency and preparation method thereof |
| RU2791105C1 (en) * | 2022-04-29 | 2023-03-02 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ имени Гагарина Ю.А.) | Coal burning modifier |
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Application publication date: 20150722 |