CN106753623A - A kind of water-coal-slurry for coal water slurry boiler and preparation method thereof, application system - Google Patents
A kind of water-coal-slurry for coal water slurry boiler and preparation method thereof, application system Download PDFInfo
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- CN106753623A CN106753623A CN201611187626.3A CN201611187626A CN106753623A CN 106753623 A CN106753623 A CN 106753623A CN 201611187626 A CN201611187626 A CN 201611187626A CN 106753623 A CN106753623 A CN 106753623A
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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
- C10L1/00—Liquid carbonaceous fuels
- C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
- C10L1/326—Coal-water suspensions
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Abstract
The invention provides a kind of water-coal-slurry for coal water slurry boiler, including the coal of 50~80 weight portions, the water of 20~50 weight portions, the dispersant of 0.1~0.5 weight portion and 0.01~0.04 weight portion stabilizer.Present invention also offers a kind of water-coal-slurry application system.The present invention is optimized adjustment to the component of water-coal-slurry, and matched combined is carried out on specific coal-water fluid-fired boiler, not only to the quality requirements reduction of water-coal-slurry feed coal, but also can effectively solve the problem that raw water coal slurry is unable to reach thoroughly circulating combustion problem in burner hearth.This kind of cool water mixture burning temperature is lower, produces thermal NO less.The water-coal-slurry application system that the present invention is provided can produce the water-coal-slurry for being available for coal water slurry boiler to use using more low-quality raw coal, it is ensured that the stable operation of boiler, and heat production and discharge can be up to state standards.
Description
Technical field
The present invention relates to energy-conserving and environment-protective technical fiel, it is related to a kind of for the water-coal-slurry of coal water slurry boiler and its preparation side
Method, application system, more particularly to a kind of water-coal-slurry for fluid bed coal water slurry boiler and preparation method thereof, application system.
Background technology
Water-coal-slurry is new Coal-based Liquid Fuel, and it has the same mobility of oil, and calorific value is equivalent to oily half, quilt
Referred to as liquid coal product.COAL-WATER SLURRY TECHNOLOGY is one is related to the systems technology of multi-door subject, economical (efficiency of combustion
It is high), security, popularity, the features such as high efficiency and the feature of environmental protection (pollutant emission is low).Its ash content and sulfur content are low, during burning
Flame kernel temperature is relatively low, high combustion efficiency, flue dust, SO2And NOXDischarge capacity is below fuel oil and fire coal.Many countries are based on length
The energy strategy of phase considers, is studied, developed and laid in as the fuel technology with coal for replacing oil.
The water-coal-slurry research work of China is started in the end of the seventies, the beginning of the eighties, synchronous with foreign countries.China is a richness
Coal, few gas, oil-poor country, therefore in recent years, the water-coal-slurry technology of preparing and combustion technology of China have developed rapidly, and reach state
International standard.Successively complete the engineering that Industrial Boiler, station boiler, heater for rolling steel, heat-treatment furnace, stove etc. use water-coal-slurry
Experiment, water-coal-slurry is just recognized as novel environment friendly fuel by increasing enterprise, can be further excellent using COAL-WATER SLURRY TECHNOLOGY
Change the product structure of coal enterprise, improve economic benefit of coal enterprises.Water-coal-slurry is divided into fuel water-coal-slurry and gasification by purposes
With water-coal-slurry, be a kind of low stain, high efficiency and can pipeline generation oil coal based fluid fuel, water-coal-slurry is a kind of most real
Coal based fluid fuel, be also one kind prepare it is relatively easy, be readily transported storage, safe and reliable low stain novel clean combustion
Material.Therefore COAL-WATER SLURRY TECHNOLOGY is the important component of current clean coal technology, is also most real, most commercioganic 21 century
Clean coal technology, very important status is occupied in the energy strategy of China.In the long run, with the hair of national economy
Exhibition, China's energy supply and demand contradiction will be increased further, and constraint of the environment to fuel is also further strengthened, and the usage amount of water-coal-slurry will
Progressively increase.Therefore, the application prospect of water-coal-slurry is boundless.
However, existing water-coal-slurry is high to feed coal quality requirements calorific value, ash content is few, and requires processing fine size, make
Used time easily causes the blocking of boiler slurry rifle, burner hearth coking, and then causes production application system operation unstable.
Therefore, how a kind of extensive low-quality coal of utilization resource is provided and produces the technology of preparing of water-coal-slurry, and combine
Fluid bed coal water slurry boiler is capable of the application system of stable operation, it has also become scientific research personnel's research and development in clear energy sources water-coal-slurry field
Emphasis.
The content of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of water coal for fluid bed coal water slurry boiler
Slurry and preparation method thereof, it is especially useful in water-coal-slurry of suspension fluidization or recirculating fluidized bed coal water slurry boiler and preparation method thereof.This
The water-coal-slurry and water-coal-slurry application system of design are invented, is produced in the case of the relatively low feed coal of the extensive, quality using resource
Water-coal-slurry, when being applied to fluidized-bed combustion boiler, it can be ensured that the stable operation of boiler, and heat production and discharge index reach state
Family's standard.
The invention provides a kind of water-coal-slurry for coal water slurry boiler, including：
Preferably, the addition of the coal is 60~66 weight portions.
Preferably, the water-coal-slurry is fuel coal water slurry；
The maximum particle diameter of coal is less than or equal to 0.5mm in the water-coal-slurry；
In the water-coal-slurry, particle diameter is that the quality of 100~300 μm of coal accounts for the mass ratio of coal more than or equal to 45%.
Preferably, the species of the coal includes one or more in bituminous coal, ub-bituminous coal, lignite and semicoke.
Preferably, the stabilizer is including in ferrous sulfate, dimethyl carbonate, sodium carboxymethylcellulose and polyacrylamide
One or more；
The dispersant includes one or more in naphthalene sulfonate, lignosulfonates and sulfonated humic acid.
Preferably, the calorific value of the water-coal-slurry is more than or equal to 3600kcal/kg；
The ash content of the water-coal-slurry is 6%~20%；
The viscosity of the water-coal-slurry is less than or equal to 1500mpas.
The invention provides a kind of preparation method of the water-coal-slurry for coal water slurry boiler, comprise the following steps：
A) ball milling will be carried out by just broken raw coal, water and dispersant, after screening filtering, obtains semi-finished product slurry；
B after semi-finished product slurry and the stabilizer mixing for) obtaining above-mentioned steps, shearing, homogeneous obtains water-coal-slurry.
Preferably, the maximum particle diameter of the semi-finished product slurry is less than or equal to 0.5mm；
In the semi-finished product slurry, particle diameter is that the quality of 100~300 μm of coal accounts for the mass ratio of coal more than or equal to 45%.
Preferably, it is described to be mixed into stirring mixing；
The rotating speed of the stirring is 24~59 revs/min；
The rotating speed of the shearing is 1290~1440 revs/min.
Present invention also offers a kind of water-coal-slurry application system, including the water-coal-slurry described in above-mentioned technical proposal any one
Or the water-coal-slurry prepared by above-mentioned technical proposal any one, and coal-water fluid-fired boiler；
The coal-water fluid-fired boiler includes suspension flow fluidized bed boiler and/or fluidised form reconstruction cycle fluidized-bed combustion boiler.
The invention provides a kind of water-coal-slurry for coal water slurry boiler, including 50~80 weight portions coal, 20~50 weights
Measure the stabilizer of the water, the dispersant of 0.1~0.5 weight portion and 0.01~0.04 weight portion of part.Present invention also offers one
Plant water-coal-slurry application system, including the water-coal-slurry described in above-mentioned technical proposal any one or above-mentioned technical proposal any one institute
The water-coal-slurry of preparation, and coal-water fluid-fired boiler；The coal-water fluid-fired boiler includes that suspension flow fluidized bed boiler and/or fluidised form reconstruct are followed
Circulation fluidized bed boiler.Compared with prior art, the present invention is for existing water-coal-slurry is high to feed coal quality requirements calorific value, ash content
It is few, and requirement processing fine size, and the blocking of boiler slurry rifle, burner hearth coking are easily caused when in use, and then cause production to be answered
With the unstable defect of system operation, the component to water-coal-slurry is optimized adjustment, and in specific coal-water fluid-fired boiler
On carry out matched combined, not only reduce requirement of the water-coal-slurry to feed coal quality, but also effectively solve raw water coal slurry
Be beyond one's reach circulating combustion in burner hearth, causes the problem of energy waste.This kind of water-coal-slurry and its application system ignition temperature
It is lower, produce thermal NO less.
The water-coal-slurry application system that the present invention is provided can be produced using more low-quality feed coal and be available for water-coal-slurry pot
The water-coal-slurry that stove is used, it is ensured that the stable operation of boiler, and heat production and discharge can be up to state standards.
Test result indicate that, the grain size parameter of the water-coal-slurry is that 150 mesh lead to sieve rate 35%~45%, and burning is used
When, particulate matter, sulfur dioxide, nitrogen oxides, mercury and mercuric compounds discharge index, the discharge for being below national standard requirement refer to
Mark.
Brief description of the drawings
Fig. 1 is the preparation technology general flow chart of the water-coal-slurry provided by the present invention for coal water slurry boiler.
Specific embodiment
In order to further appreciate that the present invention, the preferred embodiments of the invention are described with reference to embodiment, but
It is it should be appreciated that these descriptions are simply to further illustrate the features and advantages of the present invention rather than to patent requirements of the present invention
Limitation.
The all raw materials of the present invention, originate to it and are not particularly limited, commercially buying or according to people in the art
Known to member prepared by conventional method.
The all raw materials of the present invention, are not particularly limited, present invention preferably employs technical pure or water-coal-slurry field to its purity
Conventional purity.
The invention provides a kind of water-coal-slurry for coal water slurry boiler, including：
The present invention is not particularly limited to the coal, with the species of coal well known to those skilled in the art, this area
Technical staff can be selected and be adjusted according to practical situations, raw material condition and product requirement, coal of the present invention
Species preferably include in bituminous coal, ub-bituminous coal, lignite and semicoke one or more.The present invention does not have to the usage amount of the coal
Have especially limitation, those skilled in the art can be selected according to practical situations, raw material condition and product requirement and
Adjustment, by optimum organization, with reference to appropriate coal-water fluid-fired boiler, the consumption of the coal is preferably 50~80 weight to the present invention
Part, or 53~75 weight portions, or 55~70 weight portions, or 60~66 weight portions.
The present invention is not particularly limited to the addition of the water, and those skilled in the art can be according to practical application feelings
Condition, raw material condition and product requirement are selected and adjusted, and the present invention passes through optimum organization, with reference to appropriate combusting coal water slurry pot
Stove, the addition of the water is preferably 20~50 weight portions, or 25~47 weight portions, or 30~45 weight
Part, or 34~40 weight portions.
The present invention is not particularly limited to the dispersant, and the species with dispersant well known to those skilled in the art is
Can, those skilled in the art can be selected and be adjusted, this hair according to practical situations, raw material condition and product requirement
The bright dispersant preferably includes one or more in naphthalene sulfonate, lignosulfonates and sulfonated humic acid, more preferably
Naphthalene sulfonate, lignosulfonates or sulfonated humic acid.The present invention is not particularly limited to the usage amount of the dispersant, ability
Field technique personnel can be selected and be adjusted according to practical situations, raw material condition and product requirement, and the present invention passes through
Optimum organization, with reference to appropriate coal-water fluid-fired boiler, the consumption of the dispersant is preferably 0.1~0.5 weight portion, or
0.15~0.45 weight portion, or 0.17~0.4 weight portion, or 0.2~0.35 weight portion.
The present invention is not particularly limited to the stabilizer, and the species with dispersant well known to those skilled in the art is
Can, those skilled in the art can be selected and be adjusted, this hair according to practical situations, raw material condition and product requirement
The bright stabilizer preferably include one kind in ferrous sulfate, dimethyl carbonate, sodium carboxymethylcellulose and polyacrylamide or
It is various, more preferably ferrous sulfate, dimethyl carbonate, sodium carboxymethylcellulose or polyacrylamide.The present invention is to the stabilization
The usage amount of agent is not particularly limited, and those skilled in the art can want according to practical situations, raw material condition and product
Ask and selected and adjusted, by optimum organization, with reference to appropriate coal-water fluid-fired boiler, the consumption of the stabilizer is excellent for the present invention
Elect 0.01~0.04 weight portion as, or 0.013~0.035 weight portion, or 0.015~0.03 weight portion,
It can be 0.018~0.025 weight portion.
The present invention is not particularly limited to the coal water slurry boiler, is with coal water slurry boiler well known to those skilled in the art
Can, those skilled in the art can be selected and be adjusted, this hair according to practical situations, raw material condition and product requirement
It is bright by optimum organization, with reference to appropriate coal-water fluid-fired boiler, the coal water slurry boiler is preferably fluid bed coal water slurry boiler, more
Be particularly preferred as suspension flow fluidized bed boiler and/or fluidised form reconstruction cycle fluidized-bed combustion boiler, most preferably suspension flow fluidized bed boiler or
Fluidised form reconstruction cycle fluidized-bed combustion boiler.
The present invention is not particularly limited to the particle diameter of the water-coal-slurry, and those skilled in the art can be according to practical application feelings
Condition, raw material condition and product requirement are selected and adjusted, and the present invention passes through optimum organization, with reference to appropriate combusting coal water slurry pot
Stove, the maximum particle diameter of coal is preferably smaller than equal to 0.5mm, more preferably less than or equal to 0.4mm in the water-coal-slurry, more preferably less than etc.
In 0.3mm.In the water-coal-slurry, particle diameter is that the quality of 100~300 μm of coal preferably accounts for the mass ratio of coal more than or equal to 45%,
More preferably greater than it is equal to 50%, most preferably equal to or more than 55%.
The present invention is not particularly limited to the other conditions of the water-coal-slurry, and those skilled in the art can answer according to actual
Selected and adjusted with situation, raw material condition and product requirement, water-coal-slurry of the present invention is preferably fuel coal water slurry.
The calorific value of water-coal-slurry of the present invention is preferably greater than or equal to 3600kcal/kg, more preferably greater than equal to 3800kcal/
Kg, most preferably equal to or more than 4000kcal/kg；The ash content of the water-coal-slurry is preferably 6%~20%, more preferably 8%~
18%, most preferably 10%~15%；The viscosity of the water-coal-slurry is preferably smaller than equal to 1500mpas, more preferably less than or equal to
1400mpas, more preferably less than equal to 1300mpas.
The present invention passes through the optimization and refinement in component, in conjunction with appropriate coal-water fluid-fired boiler so that the present invention is provided
Water-coal-slurry can relatively low additive and it is more coarse grained on the basis of, still ensure that the stable operation of boiler, and
Heat production and discharge can be up to state standards；Effectively solve that existing water-coal-slurry is high to feed coal quality requirements calorific value, ash
Divide few, and require processing fine size, and easily cause the blocking of boiler slurry rifle, burner hearth coking when in use, and then cause production
The defect of application system fluctuation of service, but also effectively solve raw water coal slurry be beyond one's reach in burner hearth circulation combustion
Burn, cause the problem of energy waste.This kind of water-coal-slurry and its application system ignition temperature are lower, produce thermal NO compared with
It is few.With operating cost is low and the wide advantage of application prospect.
Present invention also offers a kind of preparation method of the water-coal-slurry for coal water slurry boiler, comprise the following steps：
A) ball milling will be carried out by just broken raw coal, water and dispersant, after screening filtering, obtains semi-finished product slurry；
B after semi-finished product slurry and the stabilizer mixing for) obtaining above-mentioned steps, shearing, homogeneous obtains water-coal-slurry.
The present invention and is previously used for coal water slurry boiler to the range of choice and optimum principle of the raw material in the preparation method
Water-coal-slurry in range of choice it is consistent with optimum principle, this is no longer going to repeat them.
The present invention will carry out ball milling by just broken raw coal, water and dispersant first, after screening filtering, obtain semi-finished product
Slurry.
The present invention to it is described it is just broken be not particularly limited, with just broken condition well known to those skilled in the art and set
Standby, those skilled in the art can be selected and be adjusted according to practical condition, raw material condition and product requirement,
Granularity after being crushed at the beginning of of the present invention is preferably smaller than equal to 5mm, more preferably less than or equal to 4mm, is most preferably less than equal to
3mm。
The present invention is not particularly limited to the ball milling, and the condition and equipment with ball milling well known to those skilled in the art are
Can, those skilled in the art can be selected and be adjusted, this hair according to practical condition, raw material condition and product requirement
The equipment of the bright ball milling is preferably wet ball mill；Granularity after the ball milling is preferably 500~75 μm, more preferably 355
~85 μm, most preferably more preferably 330~95 μm, 300~100 μm.
The present invention is not particularly limited to the equipment and operating procedure of the screening filtering, is known with those skilled in the art
Screening the step of filter and equipment, those skilled in the art can be according to practical condition, raw material condition and product
Product requirement is selected and adjusted, and the equipment of screening filtering of the present invention is preferably vibratory sieve；Grain after the screening filtering
Degree is preferably 400~75 μm, more preferably 355~85 μm, most preferably more preferably 330~95 μm, 300~100 μm；It is described
Coarse granule after screening filtering preferably mixes with the raw material after ball milling again, and screening filtering is carried out again.
After the semi-finished product slurry and stabilizer that the present invention obtains above-mentioned steps mix, shearing, homogeneous obtains water-coal-slurry.
The present invention is not particularly limited to the equipment and operating procedure of the mixing, with well known to those skilled in the art mixed
The step of conjunction and equipment, those skilled in the art can enter according to practical condition, raw material condition and product requirement
Row selection and adjustment, mixing of the present invention are preferably stirring mixing.The present invention does not have to the design parameter of the stirring mixing
Especially limitation, with mixing parametric well known to those skilled in the art, those skilled in the art can be according to actual production feelings
Condition, raw material condition and product requirement are selected and adjusted, and the rotating speed of stirring mixing of the present invention is 24~59 revs/min,
More preferably 29~54 revs/min, most preferably 34~49 revs/min.
The present invention is not particularly limited to the design parameter of the shearing, with the ginseng of shearing well known to those skilled in the art
Number, those skilled in the art can be selected and be adjusted according to practical condition, raw material condition and product requirement,
Shearing of the present invention is preferably high shear treatment, and the rotating speed of the shearing is preferably 1290~1440 revs/min, more preferably
1330~1400 revs/min, most preferably 1350~1380 revs/min.
Referring to Fig. 1, Fig. 1 is the preparation technology general flow chart of the water-coal-slurry provided by the present invention for coal water slurry boiler.
Present invention also offers a kind of water-coal-slurry application system, including the water-coal-slurry described in above-mentioned technical proposal any one
Or the water-coal-slurry prepared by above-mentioned technical proposal any one, and coal-water fluid-fired boiler.
Coal-water fluid-fired boiler of the present invention is preferably fluid bed coal water slurry boiler, more preferably specifically includes suspension fluidization bed
Boiler and/or fluidised form reconstruction cycle fluidized-bed combustion boiler, most preferably suspension flow fluidized bed boiler or fluidised form reconstruction cycle fluid bed pot
Stove.
Above-mentioned steps of the present invention provide it is a kind of for the water-coal-slurry of coal water slurry boiler and the water-coal-slurry application system, this
Invention requires processing fine size for existing water-coal-slurry is high to feed coal quality requirements calorific value, ash content is few, and makes
Used time easily causes the blocking of boiler slurry rifle, burner hearth coking, and then causes the unstable defect of production application system operation, to water-coal-slurry
Component be optimized adjustment, and matched combined is carried out on specific coal-water fluid-fired boiler, not only reduce water-coal-slurry
Requirement to feed coal quality, but also effectively solve raw water coal slurry and be beyond one's reach in burner hearth circulating combustion, cause
The problem of energy waste.This kind of water-coal-slurry and its application system ignition temperature are lower, produce thermal NO less.This hair
The water-coal-slurry application system of bright offer can produce the water coal for being available for coal water slurry boiler to use using more low-quality feed coal
Starch, it is ensured that the stable operation of boiler, and heat production and discharge can be up to state standards.
Test result indicate that, the grain size parameter of the water-coal-slurry is that 150 mesh lead to sieve rate 35%~45%, and burning is used
When, particulate matter, sulfur dioxide, nitrogen oxides, mercury and mercuric compounds discharge index, the discharge for being below national standard requirement refer to
Mark.
In order to further illustrate the present invention, what is with reference to embodiments the present invention provided is a kind of for coal water slurry boiler
Water-coal-slurry and preparation method thereof, application system are described in detail, but it is to be understood that these embodiments are with skill of the present invention
Implemented under premised on art scheme, given detailed implementation method and specific operating process, simply to further illustrate
The features and advantages of the present invention, rather than limiting to the claimed invention, protection scope of the present invention is also not necessarily limited to following
Embodiment.
Embodiment 1
The feed coal of the present embodiment is Shandong Xin Wen pit coals, its full water Mt=11%, and analysis water is Mad=5%, is received
Base ash content Aar=16.45%.
The described method comprises the following steps：
Coal grain of the particle diameter less than 3mm will be crushed at the beginning of new river in Shangdong Province pit coal；
By the coal grain less than 3mm with water, dispersant according to 65.7:34.1:0.2 mass ratio input ball mill is ground mixed
After closing screening filtering, semi-finished product slurry is obtained；
The semi-finished product slurry that above-mentioned steps are obtained, then put into 0.03 mass ratio stabilizer mixed, after homogeneous,
Obtain water-coal-slurry finished product；
Above-mentioned water coal slurry concentration is 62.4wt%, coal dust maximum particle diameter≤0.5mm, the coal dust accounting of 50~150 mesh particle diameters
It is 52.84%, the coal dust accounting below 150 mesh is 39.15%, and viscosity is 1050mpas, is had good stability.
Embodiment 2
The feed coal of the present embodiment is Yangquan Shanxi coal, its full water Mt=6.65%, and analysis water is Mad=2.03%,
As-received ash content Aar=18.21%.
The described method comprises the following steps：
Coal grain of the particle diameter less than 3mm will be crushed at the beginning of Yangquan Shanxi coal；
By the coal grain less than 3mm with water, dispersant according to 66.3:33.5:0.25 mass ratio input ball mill is ground
After mixing screening filtering, semi-finished product slurry is obtained；
The semi-finished product slurry that above-mentioned steps are obtained, then put into 0.035 mass ratio stabilizer mixed, homogeneous
Afterwards, water-coal-slurry finished product is obtained；
Above-mentioned water coal slurry concentration is 63wt%, coal dust maximum particle diameter≤0.5mm, and the coal dust accounting of 50~150 mesh particle diameters is
51.23%, the coal dust accounting below 150 mesh is 40.25%, and viscosity is 986mpas, is had good stability.
Embodiment 3
The feed coal of the present embodiment is Factory, Shenmu, Shanxi coal, its full water Mt=15.9%, and analysis water is Mad=3.13%,
As-received ash content Aar=15.35%.
The described method comprises the following steps：
Coal grain of the particle diameter less than 3mm will be crushed at the beginning of Factory, Shenmu, Shanxi coal；
By the coal grain less than 3mm with water, dispersant according to 65.4:34.3:0.3 mass ratio input ball mill is ground mixed
After closing screening filtering, semi-finished product slurry is obtained；
The semi-finished product slurry that above-mentioned steps are obtained, then put into 0.04 mass ratio stabilizer mixed, after homogeneous,
Obtain water-coal-slurry finished product；
Above-mentioned water coal slurry concentration is 61.5wt%, coal dust maximum particle diameter≤0.5mm, the coal dust accounting of 50~150 mesh particle diameters
It is 52.22%, the coal dust accounting below 150 mesh is 34.81%, and viscosity is 715.7mpas, is had good stability.
Water-coal-slurry CFBB, the water-coal-slurry being made of the conventional coal being used in China region, its
Grain thing, sulfur dioxide, nitrogen oxides, mercury and mercuric compounds discharge index, are below the discharge index of national standard requirement.Referring to
Table 1, table 1 is that coal water slurry boiler discharge prepared by the embodiment of the present invention 1~3 discharges contrast with national standard.
Coal water slurry boiler discharge and national standard prepared by 1 embodiment of the present invention of table 1~3 discharges contrast
A kind of water-coal-slurry for coal water slurry boiler for providing the present invention above and preparation method thereof, application system are carried out
Detailed introduction, specific case used herein is set forth to principle of the invention and implementation method, and the above is implemented
The explanation of example is only intended to help and understands the method for the present invention and its core concept, including best mode, and also causes ability
Any technical staff in domain can put into practice the present invention.It should be pointed out that for those skilled in the art,
Without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls
Enter in the protection domain of the claims in the present invention.The scope of patent protection of the present invention is defined by the claims, and may include
Those skilled in the art it is conceivable that other embodiment.If these other embodiments have is not different from claim text
The structural element of word statement, or if they include being wanted with the equivalent structure of the character express without essence difference of claim
Element, then these other embodiments also should be comprising within the scope of the claims.
Claims (10)
1. a kind of water-coal-slurry for coal water slurry boiler, it is characterised in that including：
2. water-coal-slurry according to claim 1, it is characterised in that the addition of the coal is 60~66 weight portions.
3. water-coal-slurry according to claim 1, it is characterised in that the water-coal-slurry is fuel coal water slurry；
The maximum particle diameter of coal is less than or equal to 0.5mm in the water-coal-slurry；
In the water-coal-slurry, particle diameter is that the quality of 100~300 μm of coal accounts for the mass ratio of coal more than or equal to 45%.
4. water-coal-slurry according to claim 3, it is characterised in that the species of the coal include bituminous coal, ub-bituminous coal, lignite and
One or more in semicoke.
5. water-coal-slurry according to claim 1, it is characterised in that the stabilizer include ferrous sulfate, dimethyl carbonate,
One or more in sodium carboxymethylcellulose and polyacrylamide；
The dispersant includes one or more in naphthalene sulfonate, lignosulfonates and sulfonated humic acid.
6. the water-coal-slurry according to Claims 1 to 5 any one, it is characterised in that the calorific value of the water-coal-slurry more than etc.
In 3600kcal/kg；
The ash content of the water-coal-slurry is 6%~20%；
The viscosity of the water-coal-slurry is less than or equal to 1500mpas.
7. the preparation method of a kind of water-coal-slurry for coal water slurry boiler, it is characterised in that comprise the following steps：
A) ball milling will be carried out by just broken raw coal, water and dispersant, after screening filtering, obtains semi-finished product slurry；
B after semi-finished product slurry and the stabilizer mixing for) obtaining above-mentioned steps, shearing, homogeneous obtains water-coal-slurry.
8. preparation method according to claim 7, it is characterised in that the maximum particle diameter of the semi-finished product slurry is less than or equal to
0.5mm；
In the semi-finished product slurry, particle diameter is that the quality of 100~300 μm of coal accounts for the mass ratio of coal more than or equal to 45%.
9. preparation method according to claim 7, it is characterised in that described to be mixed into stirring mixing；
The rotating speed of the stirring is 24~59 revs/min；
The rotating speed of the shearing is 1290~1440 revs/min.
10. a kind of water-coal-slurry application system, it is characterised in that including water-coal-slurry or power described in claim 1~6 any one
Profit requires the water-coal-slurry prepared by 7~9 any one, and coal-water fluid-fired boiler；
The coal-water fluid-fired boiler includes suspension flow fluidized bed boiler and/or fluidised form reconstruction cycle fluidized-bed combustion boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611187626.3A CN106753623A (en) | 2016-12-20 | 2016-12-20 | A kind of water-coal-slurry for coal water slurry boiler and preparation method thereof, application system |
Applications Claiming Priority (1)
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| CN107760398A (en) * | 2017-12-06 | 2018-03-06 | 青岛特利尔环保股份有限公司 | A kind of rough water-coal-slurry and its preparation method and application |
| CN112143535A (en) * | 2020-09-25 | 2020-12-29 | 江苏天脉化工有限公司 | Coal water slurry additive and preparation method thereof |
| CN112852511A (en) * | 2020-12-03 | 2021-05-28 | 青岛特利尔环保集团股份有限公司 | Composite slurry fuel and preparation method thereof |
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| CN112852511A (en) * | 2020-12-03 | 2021-05-28 | 青岛特利尔环保集团股份有限公司 | Composite slurry fuel and preparation method thereof |
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