CN103298918B - The gasification system of the manufacture method of low-grade coal slurry, the manufacturing installation of low-grade coal slurry and low grade coal - Google Patents
The gasification system of the manufacture method of low-grade coal slurry, the manufacturing installation of low-grade coal slurry and low grade coal Download PDFInfo
- Publication number
- CN103298918B CN103298918B CN201280005354.4A CN201280005354A CN103298918B CN 103298918 B CN103298918 B CN 103298918B CN 201280005354 A CN201280005354 A CN 201280005354A CN 103298918 B CN103298918 B CN 103298918B
- Authority
- CN
- China
- Prior art keywords
- low
- grade coal
- coal slurry
- water
- slurry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
- C10J3/506—Fuel charging devices for entrained flow gasifiers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0903—Feed preparation
- C10J2300/0906—Physical processes, e.g. shredding, comminuting, chopping, sorting
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0903—Feed preparation
- C10J2300/0909—Drying
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/094—Char
Abstract
The object of the present invention is to provide and be suitable for according to the high concentration of slurry of the gasification of pressurized-gasification furnace and the simple preparation process of low viscous low-grade coal slurry and manufacturing installation and possess the gasification system of such manufacturing installation.The manufacture method of low-grade coal slurry of the present invention has: carry out heat drying to the low grade coal after coarse reduction, simultaneously using the water vapour of discharging from low grade coal the first operation as condensing hot air furnace; With in the low grade coal after heat drying process, be added on the water of condensation and dispersion agent that obtain in the first operation, by second operation of wet pulverization method by low-grade coal slurry.Again, the manufacturing installation of low-grade coal slurry of the present invention has: the drying installation low grade coal after coarse reduction being carried out to heat drying; The water vapour of being discharged from low grade coal by heat drying is carried out as water of condensation the condensate water recovery device that reclaims; With in the low grade coal after heat drying, add water of condensation and dispersion agent, by the wet pulverization device of low-grade coal slurry.
Description
Technical field
The present invention relates to the method and apparatus being suitable for the slurries of the fuel of pressurized-gasification furnace for the low grade coal manufacture such with brown coal.Again, the present invention relates to the gasification system possessed with the low grade coal of such slurries pressurized-gasification furnace that is fuel.
Background technology
In recent years, the consumption of worldwide energy resource expands and advances just rapidly, and the price as the oil of main energy sources, coal or Sweet natural gas etc. constantly rises.Therefore, these energy how are effectively used to become major issue.
As the coal that general fuel uses, except generating efficiency and cost, also from conveying or the angle consideration of preserving the secure context such logistics, use the pitch coal of golf calorific value.But along with the economic growth of emerging nation, the supply and demand of pitch coal worldwide go short of.
On the other hand, the reserve of the low grade coal calculated headed by brown coal, secondary brown coal or secondary pitch coal is the scale of the reserve more than 6,000 hundred million tons exceeding the such high grade coal of pitch coal.But low grade coal is high due to water ratio, when therefore it can be used as the fuel of boiler for power generation etc., thermo-efficiency is low, thus cost of electricity-generating uprises.Again, because brown coal reactivity is high, and when making it dry, the danger of spontaneous combustion uprises, and therefore conveying and storage difficulties, be not almost utilized at present.
Again, coal generates electricity the carbonic acid gas (CO caused
2) output be in the trend of global sharp increase, it becomes the important factor causing global greenhouse effect.Due to the CO of the per unit thermal value of coal
2output than oil or Sweet natural gas many, therefore reduction CO
2while the requirement of output is surging, the developed country headed by Japan is suppressing the use of coal.
The such low grade coal of brown coal is the promising fuel source that price is very cheap, reserve is also many, but due to problem as described above, practical situation are that it is not used effectively.Therefore, about near colliery by brown coal hydrogasification, and utilize the method for synthesis gas obtained, carry on technical development." synthesis gas " refer to coal or the such hydrocarbon polymer of Sweet natural gas for raw material and manufacture containing hydrogen (H
2) and carbon monoxide (CO), carbonic acid gas (CO
2) or the raw gas of methane etc., be the general name of the unstripped gas for ammonia synthesis, methanol-fueled CLC or hydrogen manufacture etc.
Particularly, near colliery, low grade coal such for brown coal is gasified, Separation and Recovery CO from the synthesis gas generated
2after, as without CO
2synthesis gas utilize method receive much concern.Such as, by brown coal hydrogasification, separation and purification hydrogen from the synthesis gas obtained, carries its post liquefaction as liquid hydrogen, and the method for fuel utilization as internal combustion turbine or gas engine, can predict that it will realize in the hydrogen society in future.
About the technology using coal gasification furnace to gasify to pitch coal, wet pulverization pitch coal and being liquefied by its water slurry, blows oxygen-blown gasifier for the wet method of the pitch coal of supply water slurry liquefaction while oxygen supply and operates as business machine in the vapourizing furnace run under High Temperature High Pressure.Again, the broken pitch coal of fine powder, with gas delivery coal dust and the method being supplied to vapourizing furnace also operate as business machine.
Use pressurized-gasification furnace when gasifying to pitch coal, if add water and the such additive of dispersion agent in pitch coal after being pulverized and make pitch coal become slurries, then to operate and conveying becomes easy.Again, because the price of per unit heat is low compared with heavy oil etc., therefore the fuel of oil receives much concern as an alternative.
When being supplied as slurries to pressurized-gasification furnace by coal, Low Viscosity Ratio is easier to operation and conveying, but during concentration of slurry (coal concentration) step-down, Energy efficiency declines.Particularly, when the low grade coal that brown coal are such, higher than the water ratio of pitch coal due to it, when therefore concentration of slurry reduces, Energy efficiency significantly declines.Therefore, high density is being sought and the manufacture method of low viscous low-grade coal slurry.
At this, patent documentation 1 discloses a kind of method, namely use low grade coal as feed coal, under the preferred apparent viscosity of about 1000cP, for the purpose of the slurries of the containing ratio obtaining coal as far as possible high (about 70 % by weight), two stages are divided into by mixing when mixing dewatered cake, water and dispersion agent, do not add dispersion agent in the first phase or carry out mixing with filter cake and water after a small amount of interpolation dispersion agent under immobilising degree, add dispersion agent when mixing thing becomes pasty state and carry out mixing further.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 11-335680 publication.
Summary of the invention
The problem that invention will solve
Brown coal also reach 30 ~ 70% due to water ratio, thus when adding water further and making its water slurry liquefy, total moisture (moisture in brown coal contained by inside and the summation as the moisture of the brown coal outside of the dispersion medium of slurries) in slurries becomes high, heats a large amount of in pressurized-gasification furnace is consumed because moisture evaporates, thus Energy efficiency becomes extremely low.Therefore, low grade coal water slurry such for brown coal high for water ratio is liquefied, is supplied to the method for carrying out in pressurized-gasification furnace gasifying, almost never studied in the past.
Fig. 2 is the outline process picture sheet of the manufacture method of slurries disclosed in patent documentation 1.Even if pulp manufacturing processes disclosed in patent documentation 1 adopts high-hygroscopicity and water ratio high (30 ~ 70 % by weight) and surface is hydrophilic brown coal or secondary pitch coal, also high density slurries can be manufactured.
In patent documentation 1(claim 3) disclosed in pulp manufacturing processes in, in the first operation (pulverizing process), in brown coal or secondary pitch coal, add water, by wet method crude pulverize prepare lower concentration slurries (10 ~ 40 % by weight).But the incomplete situation of water resource infrastructure is more near colliery, can predicts and guarantee that a large amount of water is very difficult.
Secondly, in the second operation (modified process), carried out the slurries of modification by hot-water cure (pressure be 12 ~ 15MPa, temperature be 250 ~ 330 DEG C), carry out dewatering in the 3rd operation (dehydration procedure) and become dewatered cake.But, because dewatered cake does not have mobility, thus its operation and difficulty of transportation.Then after the 4th operation (the first compounding procedure) mixing dewatered cake, it is again slurried, but owing to becoming the mashed prod not having mobility, thus its operation and conveying become difficulty.Again, in mixing, cannot expect brown coal etc. to be carried out fine powder broken.
In addition, in the 5th operation (the second compounding procedure), add dispersion agent and preparation aqueous slurry, but be difficult to dispersion agent to disperse equably in mixing.
The object of the present invention is to provide and be suitable for according to the high concentration of slurry of the gasification of pressurized-gasification furnace and the simple preparation process of low viscous low-grade coal slurry.
The means of dealing with problems
The present inventor is intently studied to solve the above-mentioned conventional art problem manufacturing low-grade coal slurry.Consequently, find it is not add water to the low grade coal after pulverizing it is slurried from outside, if but the water vapour produced during dehydration by evaporation after heat drying low grade coal is utilized as condensing hot air furnace, then can reduce the moisture contained by inside of low grade coal, and increase the moisture as the low grade coal outside of dispersion medium.Again, found by so operation, though when using low grade coal as feed coal, the total moisture in slurries is also identical with conventional art, and can obtain low viscosity and operation and conveying are easy to slurries, thus completes the present invention.
Specifically, the present invention relates to and have: heat drying is carried out to the low grade coal after coarse reduction, simultaneously using the water vapour of discharging from low grade coal the first operation as condensing hot air furnace; With in the low grade coal after heat drying process, be added on the water of condensation and dispersion agent that obtain in the first operation, by the manufacture method of wet pulverization by the low-grade coal slurry of the second operation of low-grade coal slurry.
In the first operation, the water contained by low grade coal inside after coarse reduction is discharged as water vapour, thus dry low grade coal.Again, owing to being blocked the fine structure on low grade coal surface by heating tar ingredients, or surface hydrophilicity functional group becomes hydrophobic functional groups, therefore also can expect that the water of discharging is absorbed again by low grade coal.
At this, low grade coal refers to brown coal, secondary pitch coal, secondary brown coal or their Mixture Density Networks, but preferably the present invention is specially adapted to brown coal.
In the second operation, after low grade coal after wet pulverization modification, it is slurried, but cool by being recovered in the water vapour (self discharges water) of discharging from low grade coal in the first operation, and utilize after it can be used as water of condensation to reclaim, even near the colliery that water resources is less, also can low-grade coal slurry be prepared.
Preferably, the heat drying of described first operation is undertaken by the indirect heating process of more than 100 DEG C less than 200 DEG C.
Preferably, the water ratio of the low grade coal after described first operation is less than 15 % by weight.The water ratio of the low grade coal herein addressed refers to that the moisture weight contained by low grade coal inside accounts for the per-cent of low grade coal gross weight.
Preferably, the concentration of slurry in described second operation is less than more than 40 % by weight 65 % by weight.The concentration of slurry herein addressed refers to the weight percent that the dry coal base (weight after moisture content being converted as 0 % by weight, i.e. dry base (drybasis)) of low grade coal contained in slurries calculates.
Preferably, the manufacture method of described low-grade coal slurry has after described second operation, the slurries obtained is carried out further to the 3rd operation of high-speed stirring process.By carrying out high-speed stirring process, the stability of slurries increases, thus also can preserve before slurries are supplied to pressurized-gasification furnace.
Preferably, described dispersion agent is polystyrene type dispersion agent, naphthene sulfonic acid class dispersion agent, methacrylic dispersion agent or sulfomethylated lignin acids dispersion agent, and the addition added to slurries is less than more than 0.2 % by weight 2 % by weight of the dry weight relative to low grade coal.
Again, the present invention relates to and have: the drying installation low grade coal after coarse reduction being carried out to heat drying; The water vapour of being discharged from low grade coal by heat drying is carried out as water of condensation the condensate water recovery device that reclaims; With in the low grade coal after heat drying, add water of condensation and dispersion agent, by the manufacturing installation of the low-grade coal slurry of the wet pulverization device of low-grade coal slurry.
Preferably, described drying installation is that larger-scale unit is easy to indirect heating type drying installation.
Preferably, the manufacturing installation of low-grade coal slurry of the present invention also possesses dry ground device low grade coal being carried out to coarse reduction.
Preferably, the manufacturing installation of low-grade coal slurry of the present invention has the whipping appts slurries obtained by described wet pulverization device being carried out further to high-speed stirring process.
Again, the present invention relates to and have: the manufacturing installation of described low-grade coal slurry; To the conveying pipe arrangement that the slurries obtained from described wet pulverization device or described whipping appts are carried; And the gasification system to the low grade coal of pressurized-gasification furnace that the slurries by the conveying of conveying pipe arrangement gasify.
Above-mentioned purpose of the present invention, other objects, feature and advantage, with reference on the basis of accompanying drawing, can be able to clear and definite from the detailed description of following preferred example.
Invention effect
According to the present invention, the high concentration of slurry and low viscous low-grade coal slurry that are suitable for according to the gasification of pressurized-gasification furnace can be manufactured simply.Again, low grade coal that also can be such to the brown coal be not almost used effectively in the past, uses pressurized-gasification furnace to gasify expeditiously.
Accompanying drawing explanation
Fig. 1 is the summary construction diagram of an example of the device of the manufacture method illustrated for implementing low-grade coal slurry of the present invention;
Fig. 2 is the outline process picture sheet of the manufacture method of low-grade coal slurry disclosed in patent documentation 1.
Embodiment
Below, the present invention is explained.In addition, the invention is not restricted to following record.
Fig. 1 is the summary construction diagram of an example of the device of the manufacture method illustrated for implementing low-grade coal slurry of the present invention.First, low grade coal is by dry ground device 1 coarse reduction.Now, preferably, low grade coal is more than 70 % by weight by the particle (being the particle of the sieve of 3mm by mesh size) of coarse reduction to be granularity be below 3mm, and preferably granularity is the particle of below 3mm is more than 90 % by weight.
Then, the low grade coal after coarse reduction is supplied to indirect heating type drying installation 2, thus dried.As indirect heating type drying installation 2, such as, vapour pipe drying machine (steamtubedryer), single shaft indirect heating type drying machine or twin shaft indirect heating type drying machine can be used.Preferably, heat drying condition is temperature is more than 100 DEG C less than 200 DEG C.By carrying out drying under such temperature condition, granularity is almost constant, but the moisture contained by low grade coal inside is externally discharged (dehydration by evaporation) as water vapour.
Preferably, low grade coal is by indirect heating type drying installation 2, and being dried to moisture content is less than 15 % by weight, and preferably less than 10 % by weight.Again, according to heating condition, due to the fine structure on coking coal component blocks low grade coal surface, the moisture after therefore discharging becomes and is difficult to again be absorbed by low grade coal, and the hydrophobicity that it is expected to low grade coal surface also increases.With the dried low grade coal of indirect heating type drying installation 2 through transfer roller 4, be supplied to wet pulverization device 5.
On the other hand, the water vapour of discharging from the low grade coal after coarse reduction in indirect heating type drying installation 2, cools after being supplied to condensate water recovery device 3, is recovered as water of condensation.All or part of of water of condensation after recovery is also supplied to wet pulverization device 5 with dispersion agent.Then, by wet pulverization device 5, the broken low grade coal of fine powder, thus preparation low-grade coal slurry.
As condensate water recovery device 3, such as, air-cooled condenser or water-cooled condenser can be used.As wet pulverization device 5, such as, ball mill by wet process or medium stirring-type pulverizer can be used.In addition, remaining water of condensation, can discard, and also may be used for any other purposes.
Preferably, regulate the water yield being supplied to wet pulverization device 5, with the concentration making low-grade coal slurry concentration be calculated as the scope of 40 ~ 65 % by weight with dry coal base (drybasis), when only when water shortage, adding the water of aequum with the water of condensation after reclaiming with additive method.Again, preferably, the broken low-grade coal slurry of fine powder is that the low grade coal particle (by 200 object low grade coal particles) of less than 74 μm accounts for 30 ~ 90% of low grade coal particle entirety to make particle diameter.
As dispersion agent, polystyrene type dispersion agent, naphthene sulfonic acid class dispersion agent, methacrylic dispersion agent or sulfomethylated lignin acids dispersion agent can be used.Preferably, add dispersion agent, to make its concentration in low-grade coal slurry be less than more than 0.2 % by weight 2 % by weight of the dry weight relative to the low grade coal contained in low-grade coal slurry.
Except dispersion agent, by adding the such stablizer of carboxymethyl cellulose and/or the such thickening material of xanthan gum in low-grade coal slurry, also can improve the stability of slurries further.Preferably, regulating stabilizer or thickening material, to make its concentration in low-grade coal slurry be 0.001 ~ 0.05 % by weight.
By the low-grade coal slurry that the present invention obtains, even if its total moisture is identical with low-grade coal slurry in the past, but moisture contained by low grade coal inside is less, and the amount as the water of dispersion medium is more.Therefore, be in a ratio of high density and low viscosity with low-grade coal slurry in the past, there is the physical properties of the gasification be suitable for according to pressurized-gasification furnace.
In the present invention, when carrying out slurried after the low grade coal after mixing water and coarse reduction, owing to also adding dispersion agent simultaneously, therefore different from the method disclosed in patent documentation 1, dispersion agent can be scattered in slurries equably.
As patent documentation 1, when wet pulverization lower concentration slurries, form the size-grade distribution that micropartical is less.In contrast, in the present invention, due to the Di grade Mei – water mixture that wet pulverization concentration is very high, the low grade coal therefore after wet pulverization forms the more desirable size-grade distribution of micropartical.
The low-grade coal slurry obtained by wet pulverization device 5 is stored in slurry tank 6.Preferably, the low-grade coal slurry in slurry tank 6 is in advance by stirrer 7(low-speed mixer) stir.Thereafter, by possessing the conveying pipe arrangement 9 of conveying pump 8, this low-grade coal slurry is supplied to whipping appts 10 from slurry tank 6.By using whipping appts 10(homogenizer) high-speed stirring process is carried out to low-grade coal slurry, the stability of low-grade coal slurry can be increased, thus low grade coal can be prevented to be separated.
As whipping appts 10, the tempering tank of line mixer (linemixer) or band homogenizer can be used.When using line mixer, preferably rotating speed is 500 ~ 5000rpm, and the residence time of low-grade coal slurry is 10 seconds ~ 2 minutes.Low-grade coal slurry (finished product slurries) after high-speed stirring process, by possessing the conveying pipe arrangement 13 of conveying pump 12, is supplied to pressurized-gasification furnace.
In addition, whipping appts 10 is arbitrary structures, when the low-grade coal slurry in slurry tank 6 being supplied to immediately pressurized-gasification furnace and being such, also can not arrange whipping appts.Now, low-grade coal slurry, by conveying pipe arrangement 9, is supplied to pressurized-gasification furnace from slurry tank 6.
Be supplied to the low-grade coal slurry of pressurized-gasification furnace (the coal pressurized-gasification furnace of wet method coal-supply way), be vaporized at this place, be transformed to synthesis gas.The synthesis gas obtained is separation of C O or CO as required
2such impurity, refines as hydrogen.Preferably, to the CO after separation
2being fixed.Again, preferably, the CO after separation is oxidized to CO
2afterwards to its being fixed.Like this, the system will gasified in pressurized-gasification furnace as the low grade coal of raw material is formed.
[embodiment]
(the first operation)
Use the brown coal of the proterties shown in hammer mill his-and-hers watches 1 (brown coal (LoyYang brown coal) are produced in Australia) to carry out coarse reduction, the particle being below 3mm to make granularity be more than 90 % by weight the particle of the sieve of 3mm (be by mesh size be more than 90 % by weight of brown coal entirety).Brown coal after coarse reduction are fed into indirect heating type drying machine (Kawasaki Heavy Industries manufacture small steam pipe drying machine), under 0.1MPa, the condition of 180 DEG C dry one hour, obtain the drying brown coal that total moisture is 10 % by weight.The water vapour of discharging from indirect heating type drying machine, is cooled by water-cooled condenser, reclaims as water of condensation.
[table 1]
。
(the second operation)
Add water of condensation and polystyrene type dispersion agent in 3kg drying brown coal after, be fed into ball mill by wet process (φ 300mm × L300mm, volume are about 21L).Regulating the addition of water of condensation, is 49 % by weight of the gross weight relative to brown coal (dry coal base), water of condensation and polystyrene to make water of condensation.Again, the polystyrene type dispersion agent relative to drying brown coal 0.7 % by weight is added.
Batch-type pulverizing is carried out to the water of condensation be fed in ball mill by wet process and polystyrene type dispersion agent, obtain by 200 object brown coal be brown coal entirety 85 % by weight brown coal slurries.The concentration of these brown coal slurries is calculated as 50 % by weight with dry coal base, and apparent viscosity is 100sec in velocity of shear
-1, temperature is for 1.8Pas(1800cP under the condition of 25 DEG C).Again, by these brown coal slurries in the polythene container that internal volume is 500mL in left at room temperature (room temperature) after 7 days, brown coal sinkability is about 10 capacity %.
(the 3rd operation)
Homogenizer (Spectrum Lai Mikesi Co., Ltd. (PRIMIXCorporation) manufactures, T.KHOMOMIXERMARK II 2.5 type) is used further, with 1000rpm high-speed stirring process one minute to the brown coal slurries of obtain 50 in above-mentioned second operation.The apparent viscosity of the brown coal slurries after high-speed stirring process is 100sec in velocity of shear
-1, temperature is for 1.2Pas(1200cP under the condition of 25 DEG C).By the brown coal slurries after high-speed stirring process in the polythene container that internal volume is 500mL in left at room temperature (room temperature) after 7 days, brown coal sinkability is about 7 capacity %.Like this, the brown coal slurries confirming to obtain in the second operation are by carrying out high-speed stirring process further, and stability increases.
According to the above description, to those skilled in the art, many improvement of the present invention and other examples are apparent.Therefore, above-mentioned explanation is explained as just example, and provides to instruct to those skilled in the art for the purpose of enforcement most preferred form of the present invention.Without departing from the spirit of the present invention, the particular content of its structure and/or function can have material alteration.
Industrial applicability
The gasification system of the manufacture method of low-grade coal slurry of the present invention, the manufacturing installation of low-grade coal slurry and low grade coal is useful at fuel or energy field.
Nomenclature
1: dry ground device;
2: indirect heating type drying installation;
3: condensate water recovery device (condenser);
4: transfer roller;
5: wet pulverization device;
6: slurry tank;
7: stirrer (low-speed mixer);
8,12: conveying pump;
9,13: conveying pipe arrangement;
10: whipping appts (homogenizer);
11: motor.
Claims (9)
1. a manufacture method for low-grade coal slurry, is characterized in that, the manufacture method of described low-grade coal slurry has:
Be the operation of more than 90 % by weight with the particle making particle diameter be below 3mm by means of only dry ground device coarse reduction low grade coal;
Heat drying is carried out to the low grade coal after coarse reduction, simultaneously using the water vapour of discharging from low grade coal the first operation as condensing hot air furnace; With
In low grade coal after heat drying process, be added on the water of condensation and dispersion agent that obtain in the first operation, by second operation of wet pulverization by low-grade coal slurry;
The heat drying of described first operation is undertaken by indirect heating process;
The water ratio of the low grade coal after described first operation is less than 15 % by weight.
2. the manufacture method of low-grade coal slurry according to claim 1, is characterized in that, the heat drying of described first operation is undertaken by the indirect heating process of more than 100 DEG C less than 200 DEG C.
3. the manufacture method of low-grade coal slurry according to claim 1, is characterized in that, the concentration of slurry in described second operation is less than more than 40 % by weight 65 % by weight.
4. the manufacture method of low-grade coal slurry according to claim 1, is characterized in that,
Described dispersion agent is polystyrene type dispersion agent, naphthene sulfonic acid class dispersion agent, methacrylic dispersion agent or sulfomethylated lignin acids dispersion agent,
Described dispersion agent is less than more than 0.2 % by weight 2 % by weight of the dry weight relative to low grade coal to the addition that slurries add.
5. the manufacture method of the low-grade coal slurry according to any one in Claims 1-4, is characterized in that, the manufacture method of described low-grade coal slurry has after described second operation, the slurries obtained is carried out to the 3rd operation of high-speed stirring process.
6. a manufacturing installation for low-grade coal slurry, is characterized in that, the manufacturing installation of described low-grade coal slurry has:
Coarse reduction low grade coal is the dry ground device of more than 90 % by weight with the particle making particle diameter be below 3mm, carries out described coarse reduction by means of only described dry ground device;
Heat drying is carried out to the low grade coal after coarse reduction until water ratio is the indirect heating type drying installation of less than 15 % by weight;
The water vapour of being discharged from low grade coal by heat drying is carried out as water of condensation the condensate water recovery device that reclaims; With
In low grade coal after heat drying, add water of condensation and dispersion agent, by the wet pulverization device of low-grade coal slurry.
7. the manufacturing installation of low-grade coal slurry according to claim 6, is characterized in that, the manufacturing installation of described low-grade coal slurry has the whipping appts slurries obtained by described wet pulverization device being carried out further to high-speed stirring process.
8. a gasification system for low grade coal, is characterized in that, the gasification system of described low grade coal has:
The manufacturing installation of low-grade coal slurry according to claim 6;
To the conveying pipe arrangement that the slurries obtained from described wet pulverization device are carried; With
To the pressurized-gasification furnace that the slurries by the conveying of conveying pipe arrangement gasify.
9. a gasification system for low grade coal, is characterized in that, the gasification system of described low grade coal has:
The manufacturing installation of low-grade coal slurry according to claim 7;
To the conveying pipe arrangement that the slurries obtained from described whipping appts are carried; With
To the pressurized-gasification furnace that the slurries by the conveying of conveying pipe arrangement gasify.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-012154 | 2011-01-24 | ||
| JP2011012154A JP6134088B2 (en) | 2011-01-24 | 2011-01-24 | Gasification method for low-grade coal slurry and gasification system for low-grade coal |
| PCT/JP2012/000103 WO2012101964A1 (en) | 2011-01-24 | 2012-01-11 | Low-grade coal slurry production method, low-grade coal slurry production device, and low-grade coal gasification system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103298918A CN103298918A (en) | 2013-09-11 |
| CN103298918B true CN103298918B (en) | 2016-01-13 |
Family
ID=46580545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280005354.4A Active CN103298918B (en) | 2011-01-24 | 2012-01-11 | The gasification system of the manufacture method of low-grade coal slurry, the manufacturing installation of low-grade coal slurry and low grade coal |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6134088B2 (en) |
| CN (1) | CN103298918B (en) |
| AU (1) | AU2012210131B2 (en) |
| WO (1) | WO2012101964A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9404055B2 (en) | 2013-01-31 | 2016-08-02 | General Electric Company | System and method for the preparation of coal water slurries |
| CN104449917B (en) * | 2014-11-18 | 2016-04-13 | 中国五环工程有限公司 | High-concentration coal-water slurry method is prepared in the upgrading of brown coal low temperature |
| CN104449918B (en) * | 2014-11-18 | 2016-04-27 | 中国五环工程有限公司 | High-concentration coal-water slurry method is prepared in the upgrading of brown coal high temperature |
| CN104449916B (en) * | 2014-11-18 | 2016-04-13 | 中国五环工程有限公司 | In brown coal, high-concentration coal-water slurry method is prepared in warm upgrading |
| CN104371779B (en) * | 2014-11-18 | 2016-05-04 | 中国五环工程有限公司 | Low-order coal is prepared method and the system thereof of high-concentration coal-water slurry |
| CN105695011B (en) * | 2016-03-16 | 2017-12-12 | 中国石油大学(华东) | One kind gasification auxiliary pulping system and its application method |
| CN108795522B (en) * | 2018-06-23 | 2021-12-03 | 台州泰捷化工科技有限公司 | Coal water slurry additive and preparation method thereof |
| CN108865304B (en) * | 2018-06-23 | 2021-04-30 | 佛山市天亿化工有限公司 | Amide group-containing coal water slurry additive and preparation method thereof |
| CN108795517B (en) * | 2018-06-23 | 2021-11-09 | 泉州市联政信息科技有限公司 | High-molecular coal water slurry additive and preparation method thereof |
| KR20230067743A (en) * | 2021-11-08 | 2023-05-17 | 주식회사 선진티에스 | Combined system of coal-gasifier and blast-furnace using water-free coal and method using the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0096584A2 (en) * | 1982-06-07 | 1983-12-21 | Foster Wheeler Energy Corporation | Gasification process |
| CN101168694A (en) * | 2006-10-27 | 2008-04-30 | 神华国际贸易有限责任公司 | Hot forming method and device without bonding agent for low metamorphic coal |
| CN101899338A (en) * | 2010-07-28 | 2010-12-01 | 江阴市中立机械工业有限公司 | Coal-water slurry slurrying system and method for coal chemical industry |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5945395A (en) * | 1982-09-08 | 1984-03-14 | Electric Power Dev Co Ltd | Preparation of highly concentrated slurry of coal |
| JPS62131095A (en) * | 1985-12-04 | 1987-06-13 | Mitsubishi Heavy Ind Ltd | Production of highly concentrated coal-water slurry |
-
2011
- 2011-01-24 JP JP2011012154A patent/JP6134088B2/en active Active
-
2012
- 2012-01-11 AU AU2012210131A patent/AU2012210131B2/en active Active
- 2012-01-11 CN CN201280005354.4A patent/CN103298918B/en active Active
- 2012-01-11 WO PCT/JP2012/000103 patent/WO2012101964A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0096584A2 (en) * | 1982-06-07 | 1983-12-21 | Foster Wheeler Energy Corporation | Gasification process |
| CN101168694A (en) * | 2006-10-27 | 2008-04-30 | 神华国际贸易有限责任公司 | Hot forming method and device without bonding agent for low metamorphic coal |
| CN101899338A (en) * | 2010-07-28 | 2010-12-01 | 江阴市中立机械工业有限公司 | Coal-water slurry slurrying system and method for coal chemical industry |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2012210131B2 (en) | 2016-04-21 |
| AU2012210131A1 (en) | 2013-08-15 |
| CN103298918A (en) | 2013-09-11 |
| WO2012101964A1 (en) | 2012-08-02 |
| JP6134088B2 (en) | 2017-05-24 |
| JP2012153761A (en) | 2012-08-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103298918B (en) | The gasification system of the manufacture method of low-grade coal slurry, the manufacturing installation of low-grade coal slurry and low grade coal | |
| Svoboda et al. | Pretreatment and feeding of biomass for pressurized entrained flow gasification | |
| US8049049B2 (en) | Method of upgrading biomass, upgraded biomass, biomass water slurry and method of producing same, upgraded biomass gas, and method of gasifying biomass | |
| DK1931753T3 (en) | PROCESS FOR THE GENERATION OF METHANE AND / OR FROM BIOMASS methane hydrates | |
| US9353325B2 (en) | Process for modifying fuel solids | |
| US20090200211A1 (en) | Process for improved liquefaction of fuel solids | |
| US6664302B2 (en) | Method of forming a feed for coal gasification | |
| US9879194B2 (en) | Method for reforming coal using palm residue | |
| US20140054503A1 (en) | Apparatus and method for upgrading coal | |
| KR20170069544A (en) | Method for Producing Coal-Biomass Mixed Fuel with High Biomass Content | |
| JP2005205252A (en) | High-concentration slurry containing biomass, method for preparing high-concentration slurry and method for manufacturing biomass fuel | |
| CN105051166A (en) | Mxture and apparatus for blending non-aqueous slurries | |
| CN103282469B (en) | The gasification system of the manufacture method of low-grade coal slurry, the manufacturing installation of low-grade coal slurry and low grade coal | |
| JP2012172076A (en) | Coal upgrading system, dewatering system of carbon-containing substance, and solvent circulation system for upgrading of carbon-containing substance | |
| US9714394B2 (en) | Method for producing ashless coal | |
| CA2788471A1 (en) | Apparatus and method for upgrading coal | |
| JP2018012756A (en) | Method for producing gasification raw material and gasification raw material production device | |
| JPS609077B2 (en) | Fuel composition and method for producing the same | |
| WO2022085793A1 (en) | Slurry fuel, production method for slurry fuel, and production method for slurry fuel and bio-oil | |
| AU2002248786B2 (en) | Method of forming a feed for coal gasification | |
| KR101461012B1 (en) | Coal Modification Process using Waste heat recovery | |
| KR101325032B1 (en) | Modification method for coal | |
| He | The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technologies | |
| Elsayed | Studio teorico-sperimentale sulla gassificazione in letto fluido di miscele acqua/biomassa/carbone Characterization of Solid Fuel slurries for feeding fluidized bed gasifiers | |
| JP2015040275A (en) | Charcoal slurry fuel and method and apparatus for production of the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |