CN106916612A - The method that sludge water-coal-slurry slurry performance is improved by sludge pretreatment - Google Patents
The method that sludge water-coal-slurry slurry performance is improved by sludge pretreatment Download PDFInfo
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- CN106916612A CN106916612A CN201710103018.8A CN201710103018A CN106916612A CN 106916612 A CN106916612 A CN 106916612A CN 201710103018 A CN201710103018 A CN 201710103018A CN 106916612 A CN106916612 A CN 106916612A
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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
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Abstract
The present invention relates to sludge disposal technology, it is desirable to provide a kind of method that sludge water-coal-slurry slurry performance is improved by sludge pretreatment.The method is first, to conditioner is added in sludge, to be radiated using microwave after mixing, and the physics and chemical characteristic of sludge are improved by pre-processing；It is used further to be prepared into sludge water-coal-slurry with the blending of coal dust, water and slurries additive agent by pretreated conditioning sludge.The conditioner is villaumite, and its addition is the 0.5~1% of sludge quality；The frequency of microwave is 2450MHz or 900MHz, and microwave irradiation time is 0.5~3min.Simple possible of the present invention, turns waste into wealth, and has obvious social and economic benefits, and is a kind of effective minimizing, innoxious, recycling mode.Using conditioner and the dual pretreatment modification of microwave, method is easily realized, is easy to operation, but the effect highly significant for obtaining, and can increase substantially the concentration and sludge blending amount of sludge water-coal-slurry, reduces sludge water-coal-slurry viscosity.
Description
Technical field
The present invention relates to sludge disposal technology, more particularly to a kind of method for improving sludge water-coal-slurry slurry performance.Specifically
Method is first to be pre-processed sludge, then prepares sludge water-coal-slurry with the blending such as coal, water, additive, and dirt is greatly improved with this
The slurry concentration of muddy water coal slurry, increases sludge blending amount.
Background technology
China's fossil energy characteristic distributions are rich coal, oil-poor, few gas, and coal is accounted in the primary energy consumption structure of China
More than 60%, this production of energy and consumption s tructure based on coal will not change within the longer term, therefore, coal is in China
Particularly significant status is occupied in the national economic development and people's lives.Water-coal-slurry is a kind of new coal base fluid state clean fuel,
The chemical addition agent of water and 0.5-1% by the fine coal of 60-70% or so, 30-40% or so or so is constituted, and water-coal-slurry both kept
Coal original physical characteristic, can flow as liquid-fuel oil, store, stirring, spray burning and gasification again, current
Under oil supply more stressful situation, fuel oil and combustion gas can be replaced, be a kind of preferable boiler oil and gasified raw material.Water coal
Since slurry technology was born from the upper world 70-80 ages, relatively broad application, including various industrial pots have at home and abroad been obtained
Stove, station boiler, metallurgical, building materials kiln, chemical industry gasification furnace etc..
With economic and society fast development, the amount of sludge of city and Industrial Waste Water Treatments factory is also increased considerably,
Because sludge not only contains substantial amounts of organic matter, poisonous and harmful substance, such as pathogenic microorganism, bacterium, heavy metal are contained simultaneously,
Intractability is big, high cost, easily causes secondary pollution.How high-efficiency cleaning processes these sludge at low cost, makes city and work
Industry, the development sustainability of society, it has also become problem in the urgent need to address.Sludge disposal technology conventional at present have it is agricultural,
Landfill, burning etc., particularly incineration technology is considered as to compare thoroughly sludge reduction, innoxious, recycling.But one
As the sludge that dispatches from the factory of sewage treatment plant be that, by the wet mud after mechanical dehydration, moisture content still reaches more than 80%, it is difficult to enter
Row is directly burned or blends coal combustion, it is necessary to moisture is further removed to 40% or so, can just be burned or burning treatment,
But moisture is removed to 40% from 80% or so, in addition it is also necessary to consume substantial amounts of heat energy, have influence on economic benefit.In recent years by wet dirt
It is that a kind of brand-new, effective recycling sludge is utilized that mud directly prepares sludge water-coal-slurry with the material blending such as coal, water, additive
Method.The technology need not again carry out dewater treatment to the wet mud after mechanical dehydration, and the high-moisture treatment in sludge is proper also
Clear water needed for slurrying can be saved, so not only saves the heat energy of a large amount of dehydrations, and simplifies technique and technology, carries
The economy that sludge high is utilized.Additionally, water-coal-slurry of the burning containing sludge can not only process substantial amounts of sludge, and profit can be reclaimed
Its calorific value is used, the purpose for turning waste into wealth is realized.
Because mud component is sufficiently complex, after existing research shows water-coal-slurry blending sludge, slurry concentration can be significantly
Degree declines, and forming slurry viscosity can rise.Its reason is：1) in sludge compared with juicy be the cellular water (water inside microbial cell
Point), still preservation is being prepared into after water-coal-slurry in cell, it is impossible to as the Free water for flowing, improve final moisture accounting,
That is the solid concentration of slurry have dropped；2) there are a large amount of cotton-shaped tissues in sludge, this structure has powerful water absorbing capacity, quilt
The moisture of absorption can not equally be flowed freely, and reduce the moisture of lubrication, cause slurry concentration to decline or viscosity rising.
3) extracellular polymeric and the oxygen-containing functional group of particle surface in sludge has very strong hydrophily, can a large amount of beams in water-coal-slurry
Moisture is tied up, is allowed to be influenceed as Free water the concentration and viscosity of water-coal-slurry.Shown according to research, when wet mud blending amount
For 15% when (accounting of wet mud and dry pulverized coal), can make water-coal-slurry concentration decline more than 10 percentage points.And develop sludge
The purpose of water-coal-slurry is to want blending sludge quantity as much as possible, saves coal resources, economy and social benefit is improved, to reach
The purpose of energy-saving and emission-reduction.The concentration of sludge water-coal-slurry and the blending amount of sludge are how improved, sludge water-coal-slurry viscosity is reduced, is solution
The certainly key of sludge water-coal-slurry slurry performance, it has also become the hot issue of people's common concern.
Therefore, a kind of blending amount that can increase sludge in water-coal-slurry is developed, the slurry concentration of sludge water-coal-slurry, drop is improved
The technical method of the viscosity of low sludge water-coal-slurry, to extensive treatment city and industrial sludge, reduces Treatment of Sludge cost, accelerates
The minimizing of sludge, innoxious, comprehensive utilization of resources are significant.
The content of the invention
The technical problem to be solved in the present invention is to overcome deficiency of the prior art, is proposed a kind of by sludge pretreatment
The method for improving sludge water-coal-slurry slurry performance.The method can improve the concentration and blending amount of sludge water-coal-slurry, reduce sludge water
The viscosity of coal slurry.
In order to solve the above technical problems, solution of the invention is：
A kind of method that sludge water-coal-slurry slurry performance is improved by sludge pretreatment is provided, is first to be adjusted to addition in sludge
Reason agent, is radiated after mixing using microwave, and the physics and chemical characteristic of sludge are improved by pre-processing；By pretreated
Conditioning sludge is used further to be prepared into sludge water-coal-slurry with the blending of coal dust, water and slurries additive agent；
The conditioner is villaumite, and its addition is the 0.5~1% of sludge quality；The frequency of microwave be 2450MHz or
900MHz, microwave irradiation time is 0.5~3min.
In the present invention, described sludge is the activated sludge or its machine that are produced during municipal sewage or Industrial Waste Water Treatments
Tool dehydration product, moisture content more than 80%.
In the present invention, described slurries additive agent is：Methanonaphthalene sulphur sodium-SSS-sodium maleate, methylene
Base naphthalenesulfonate formaldehyde condensation compound or calcium lignosulfonate.
In the present invention, the conditioner is sodium chloride, potassium chloride or calcium chloride.
In the present invention, in the sludge water-coal-slurry being made, the mass concentration percentage of each component is：By the folding of moisture content 80%
The conditioning sludge 10~20% of calculation, coal dust 52.5~62.2%, water 17~37%, slurries additive agent 0.5~0.8%.
Inventive principle explanation：
Sludge is due to cellular waters containing a large amount of stabilizations, extremely strong in organic extracellular polymeric and hydrophily of flocculent structure
Oxygen-containing functional group, after it is prepared water-coal-slurry with coal blending, the solid phase mass concentration of slurry declines to a great extent, and have impact on mixing for sludge
Mixed amount, general mixing proportion will make that slurry viscosity is substantially increased or slurry concentration declines to a great extent below 15%, otherwise, or even
Less than 50% is down to, rational economic benefit is lost, popularization and application are had influence on.Therefore, the cell membrane for how destroying in sludge, makes
Water turns into the water for flowing freely；Flocculent structure in sludge is smashed, extracellular polymeric is destroyed, weakens moisture holding capacity；Improve or decompose
Oxygen-containing functional group in sludge, mitigates the hydrophily on mud granule surface etc., is the key for improving sludge water-coal-slurry slurry performance.This
Invention first carries out quenched pretreatment by sludge, eliminates as much as above mentioned problem, then prepares sludge water coal with coal blending again
Slurry, this is undoubtedly a kind of efficient Technology Ways for improving sludge water-coal-slurry concentration and sludge blending amount.
The present invention proposes to utilize conditioner and the dual preprocess method of microwave.Because the dielectric property of sludge is not strong,
Absorbability to microwave is weaker, and directly bad using microwave irradiation effect, villaumite conditioner can improve the dielectric property of mud, by force
Change ionic conduction, improve transformation efficiency and sludge radiation temperature of the microwave energy in sludge.Microwave have special thermal effect and
Selective heating feature etc., while sludge inside high degree of agitation can be caused, under the auxiliary of conditioner, causes localized hyperthermia and height
Pressure, the cell membrane of microorganism, decomposes oxygen-containing functional group in destruction sludge；Additionally, free radical can be produced in the radiative process of microwave
With stimulated activity oxygen, with strong oxidisability, the organic extracellular polymeric that can be decomposed and destroy in sludge；Microwave also has viscosity reduction
Effect, can reduce the steric hindrance of system, promote sludge preferably soluble in water.
Under chlorate conditioner and microwave double action, the cell membrane of microorganism will be destroyed in sludge, cell
Water outflow reaches the purpose that lubrication is played between coal particle and mud granule as the Free water needed in slurrying；Sludge
In the broken destruction of cotton-shaped tissue, extracellular polymeric is decomposed, the cell membrane, carbohydrate based on organic matter it is thin
Born of the same parents organize and grease will be decomposed, and promote irreducible water and cellular water in mud granule to be released；In HTHP and conditioning
Under agent effect, the substantial amounts of oxygen-containing functional group in mud granule surface will also be decomposed, and mud granule surface hydrophilicity is thoroughly improved；
This external radiation and conditioning can adjust sludge colloidal particle group's ordered state, overcome electric exclusion to act on and aquation, reduce
Its affinity with water, reduces the water retention property of sludge flco.Any of the above effect can efficiently improve sludge with coal into slurry
Characteristic.Blended by a certain percentage with coal, water and additive again by pretreated conditioning sludge and be prepared into sludge water-coal-slurry.
In the present invention, by adjusting the addition of water in blending procedure, make consolidating in final obtained sludge water-coal-slurry
The mass concentration of body is 55-67%.Compared with conventional sludge water-coal-slurry, by pretreated sludge water-coal-slurry slurry concentration or
Sludge blending amount can be greatly improved, and slurry viscosity declines.
Compared with prior art, technical advantage of the invention is：
(1) sludge is processed using COAL-WATER SLURRY TECHNOLOGY, method simple possible turns waste into wealth, with obvious society and economy
Benefit, is a kind of effective minimizing, innoxious, recycling mode.
(2) utilize conditioner and the dual pretreatment modification of microwave, method easily to realize, be easy to operate, but obtain
Effect highly significant, can increase substantially the concentration and sludge blending amount of sludge water-coal-slurry, reduce sludge water-coal-slurry viscosity.
Brief description of the drawings
Fig. 1 is the schematic flow sheet that sludge pretreatment prepares sludge water-coal-slurry in the present invention.
Reference：1. sludge；2. disintegrating machine；3. mixing arrangement；4. conditioner；5. microwave radiation device；6. slurrying is filled
Put；7. coal dust；8. water；9. additive；10. slurry can.
Specific embodiment
Following embodiment can make the technical staff of this professional skill field more fully understand the present invention, but not appointing
Where formula limitation is of the invention.
As shown in figure 1, the present invention carries out pretreatment modification to sludge using conditioner and microwave, sludge water-coal-slurry is improved
Slurry concentration (or reducing into slurry viscosity) and sludge blending amount.Specific method：2. 1. sludge pass through conventional disintegrating machine, makes sludge
Granular size is crushed to below 5mm, and 4. 3. neutralize powdery conditioner in mixing transposition carries out mechanical mixture, and mixing arrangement can be
Common mechanical formula mixing device；5. the sludge of blending conditioner enters back into microwave radiation device carries out quenched pretreatment, the microwave
Radiation appliance can be common microwave stove or similar device, and the residence time is 0.5-3 points in microwave, and microwave power is according to pre- place
The amount of sludge is managed to determine；6. pretreated conditioning sludge enter back into pulping device, at the same add coal dust 7., water 8. and water coal
9. slurry additive is prepared into sludge water-coal-slurry together, and pulping device can be water-coal-slurry ball mill by wet process slurrying work conventional at present
Process and equipment, water is the waste water of general industry water or suitable slurrying, and additive is conventional slurries additive agent, such as methanonaphthalene
Sulphur sodium-SSS-sodium maleate, methylene naphthalenesulfonate formaldehyde condensation compound, calcium lignosulfonate etc..Prepare what is completed
Sludge water-coal-slurry is standby in being placed in slurry can 10..
In following each embodiments, sludge is the activated sludge or its machine of generation during municipal sewage or Industrial Waste Water Treatments
Tool dehydration product, (percent mass ratio of sludge or conditioning sludge in each embodiment presses moisture content to moisture content more than 80%
80% conversion).
Embodiment 1：
Material：
Sludge be Hangzhou sewage treatment plant by the sludge after mechanical dehydration, moisture content is about 80%.Coal is Shandong Yan
State bituminous coal, air-dried moisture, ash content, volatile matter and fixed carbon are respectively 1.18%, 15.24%, 29.50% and 54.08%.Add
Plus agent is methanonaphthalene sulphur sodium-SSS-sodium maleate.
Step：
According to water coal slurry concentration is estimated, wet mud, coal (granularity≤4mm), water and additive needed for calculating slurrying
Consumption.Sludge is not pre-processed, and the sludge of respective quality, the water of coal particle and correspondence ratio, additive are loaded into frequency conversion
In planetary ball mill, shared volume is about 1/3rd of ball mill tank volume, then will be certain according to test requirements document
(diameter of big ball, middle ball and bead is respectively the steel ball of proportioning：20mm, 10mm, 6mm) add tank in, shut housing, set
After the parameters such as rotating speed, the commutation cycle of operation and the run time of ball mill, start ball mill, prepare water-coal-slurry.
Each component percent mass ratio：
Sludge：10%, coal：52.5%, water：37%, additive：0.5%.
Embodiment 2：
Material：
Sludge is the sludge after the sewage disposal of Nanjing petroleum chemical enterprise, and moisture content is about 80%.Coal is Yanzhou bituminous coal,
Air-dried moisture, ash content, volatile matter and fixed carbon are respectively 1.18%, 15.24%, 29.50% and 54.08%.Additive is
Calcium lignosulfonate.
Step：
According to water coal slurry concentration is estimated, wet mud, coal (granularity≤4mm), water and additive needed for calculating slurrying
Consumption.Sludge is not pre-processed, and the sludge of respective quality, the water of coal particle and correspondence ratio, additive are loaded into frequency conversion
In planetary ball mill, shared volume is about 1/3rd of ball mill tank volume, then will be certain according to test requirements document
(diameter of big ball, middle ball and bead is respectively the steel ball of proportioning：20mm, 10mm, 6mm) add tank in, shut housing, set
After the parameters such as rotating speed, the commutation cycle of operation and the run time of ball mill, start ball mill, prepare water-coal-slurry.
Each component percent mass ratio：
Sludge：15%, coal：56.3%, water：28%, additive：0.7%.
Embodiment 3：
Material：
Sludge be Hangzhou sewage treatment plant by the sludge after mechanical dehydration, moisture content is about 80%.Coal is Shandong Yan
State bituminous coal, air-dried moisture, ash content, volatile matter and fixed carbon are respectively 1.18%, 15.24%, 29.50% and 54.08%.Add
Plus agent is methanonaphthalene sulphur sodium-SSS-sodium maleate.Conditioner is potassium chloride.
Step：
According to water coal slurry concentration is estimated, wet mud, conditioner, coal (granularity≤4mm), water needed for calculating slurrying and
The consumption of additive.Sludge is pre-processed, and microwave dress is put into after the sludge and conditioner of respective quality are well mixed
Put modified 0.5min, microwave power 800w, frequency 2450MHz；The water of modified conditioning sludge, coal particle and correspondence ratio,
Additive is fitted into frequency conversion planetary ball mill, later the repeatedly step of embodiment 1.
Each component percent mass ratio：
Sludge：10%, coal：52.5%, water：37%, additive：0.5%；Conditioner potassium chloride quality accounts for sludge quality
0.8%.
Embodiment 4：
Material：
Sludge be Hangzhou sewage treatment plant by the sludge after mechanical dehydration, moisture content is about 80%.Coal is Shandong Yan
State bituminous coal, air-dried moisture, ash content, volatile matter and fixed carbon are respectively 1.18%, 15.24%, 29.50% and 54.08%.Add
Plus agent is sodium lignin sulfonate.Conditioner is calcium chloride.
Step：
According to water coal slurry concentration is estimated, wet mud, conditioner, coal (granularity≤4mm), water needed for calculating slurrying and
The consumption of additive.Sludge is pre-processed, and microwave dress is put into after the sludge and conditioner of respective quality are well mixed
Put modified 3min, microwave power 800w, frequency 900MHz；Modified conditioning sludge, the water of coal particle and correspondence ratio, addition
Agent is fitted into frequency conversion planetary ball mill, later the repeatedly step of embodiment 1.
Each component percent mass ratio：
Sludge：20%, coal：62.2%, water：17%, additive：0.8%；Conditioner calcium chloride quality accounts for sludge quality
0.8%.
Embodiment 5：
Material：
Sludge is the sludge after the sewage disposal of Nanjing petroleum chemical enterprise, and moisture content is about 80%.Coal is Yanzhou bituminous coal,
Air-dried moisture, ash content, volatile matter and fixed carbon are respectively 1.18%, 15.24%, 29.50% and 54.08%.Additive is
Methylene naphthalenesulfonate formaldehyde condensation compound.Conditioner is sodium chloride.
Step：
According to water coal slurry concentration is estimated, wet mud, conditioner, coal (granularity≤4mm), water needed for calculating slurrying and
The consumption of additive.Sludge is pre-processed, and microwave dress is put into after the sludge and conditioner of respective quality are well mixed
Put modified 1.5min, microwave power 800w, frequency 2450MHz；The water of modified conditioning sludge, coal particle and correspondence ratio,
Additive is fitted into frequency conversion planetary ball mill, later the repeatedly step of embodiment 1.
Each component percent mass ratio：
Sludge：15%, coal：56.3%, water：28%, additive：0.7%；Conditioner sodium chloride quality accounts for sludge quality
0.8%.
Embodiment 6：
Material：
Sludge be Hangzhou sewage treatment plant by the sludge after mechanical dehydration, moisture content is about 80%.Coal is Shandong Yan
State bituminous coal, air-dried moisture, ash content, volatile matter and fixed carbon are respectively 1.18%, 15.24%, 29.50% and 54.08%.Add
Plus agent is methanonaphthalene sulphur sodium-SSS-sodium maleate.Conditioner is sodium chloride.
Step：
According to water coal slurry concentration is estimated, wet mud, conditioner, coal (granularity≤4mm), water needed for calculating slurrying and
The consumption of additive.Sludge is pre-processed, and microwave dress is put into after the sludge and conditioner of respective quality are well mixed
Put modified 1.5min, microwave power 800w, frequency 2450MHz；The water of modified conditioning sludge, coal particle and correspondence ratio,
Additive is fitted into frequency conversion planetary ball mill, later the repeatedly step of embodiment 1.
Each component percent mass ratio：
Sludge：15%, coal：56.3%, water：28%, additive：0.7%；Conditioner sodium chloride quality accounts for sludge quality
0.5%.
Embodiment 7：
Material：
Sludge be Hangzhou sewage treatment plant by the sludge after mechanical dehydration, moisture content is about 80%.Coal is Shandong Yan
State bituminous coal, air-dried moisture, ash content, volatile matter and fixed carbon are respectively 1.18%, 15.24%, 29.50% and 54.08%.Add
Plus agent is methanonaphthalene sulphur sodium-SSS-sodium maleate.Conditioner is sodium chloride.
Step：
According to water coal slurry concentration is estimated, wet mud, conditioner, coal (granularity≤4mm), water needed for calculating slurrying and
The consumption of additive.Sludge is pre-processed, and microwave dress is put into after the sludge and conditioner of respective quality are well mixed
Put modified 1.5min, microwave power 800w, frequency 2450MHz；The water of modified conditioning sludge, coal particle and correspondence ratio,
Additive is fitted into frequency conversion planetary ball mill, and repeatedly embodiment 1 is rapid later.
Each component percent mass ratio：
Sludge：15%, coal：56.3%, water：28%, additive：0.7%；Conditioner sodium chloride quality accounts for sludge quality
1%.
The performance of sludge water-coal-slurry prepared by various embodiments is as shown in table 1.
Embodiment 1 and embodiment 2 are the performances of the sludge water-coal-slurry that sludge is not prepared by pretreatment in table 1, are implemented
Example 3 to embodiment 7 is the performance of sludge water-coal-slurry of the sludge by being prepared after conditioner and the dual pretreatment of microwave.By table
It can be seen that, by after dual pretreatment modification, under equivalent viscosities, sludge water-coal-slurry solid concentration and sludge blending are measured sludge
(such as embodiment 4 is compared with embodiment 2) is improved by a relatively large margin, and fluidity of slurry improves；Under equal sludge blending amount, sludge
(such as embodiment 5,6,7 is compared with embodiment 2, embodiment 3 and the phase of embodiment 1 for the decline that viscosity in aqueous coal slurries obtains by a relatively large margin
Than), and the mobility of slurry improves.
In sum, the present invention to sludge by after pretreatment modification, the slurry performance of sludge water-coal-slurry can obtain greatly
Width improves.
Claims (5)
1. the method that sludge water-coal-slurry slurry performance is improved by sludge pretreatment, it is characterised in that be first to be added in sludge
Conditioner, is radiated after mixing using microwave, and the physics and chemical characteristic of sludge are improved by pre-processing；By after pretreatment
Conditioning sludge be used further to coal dust, water and slurries additive agent blending be prepared into sludge water-coal-slurry；
The conditioner is villaumite, and its addition is the 0.5~1% of sludge quality；The frequency of microwave be 2450MHz or
900MHz, microwave irradiation time is 0.5~3min.
2. method according to claim 1, it is characterised in that described sludge is municipal sewage or Industrial Waste Water Treatments mistake
The activated sludge or its mechanical dehydration product produced in journey, moisture content more than 80%.
3. method according to claim 1, it is characterised in that described slurries additive agent is：Methanonaphthalene sulphur sodium-benzene
Vinyl sulfonic acid sodium-sodium maleate, methylene naphthalenesulfonate formaldehyde condensation compound or calcium lignosulfonate.
4. method according to claim 1, it is characterised in that the conditioner is sodium chloride, potassium chloride or calcium chloride.
5. the method according to Claims 1-4 any one, it is characterised in that in the sludge water-coal-slurry being made, respectively
The mass concentration percentage of component is：By conditioning sludge 10~20%, coal dust 52.5~62.2%, water that moisture content 80% is converted
17~37%, slurries additive agent 0.5~0.8%.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260555A (en) * | 2011-06-28 | 2011-11-30 | 浙江大学 | Method for changing specific physical and chemical characteristics of coal by utilizing microwave for improving slurry forming performance |
| CN103421558A (en) * | 2012-05-15 | 2013-12-04 | 通用电气公司 | Preparation apparatus and preparation method of coal water slurry |
| CN104388137A (en) * | 2014-12-12 | 2015-03-04 | 湖南科技大学 | Method for preparing high concentration sludge coal slurry from urban sludge |
| CN104962331A (en) * | 2015-07-03 | 2015-10-07 | 中国东方电气集团有限公司 | Method for preparing coal water slurry from low-rank coal |
| CN105695008A (en) * | 2014-11-27 | 2016-06-22 | 通用电气公司 | Method and apparatus for preparing coal water slurry |
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2017
- 2017-02-24 CN CN201710103018.8A patent/CN106916612B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260555A (en) * | 2011-06-28 | 2011-11-30 | 浙江大学 | Method for changing specific physical and chemical characteristics of coal by utilizing microwave for improving slurry forming performance |
| CN103421558A (en) * | 2012-05-15 | 2013-12-04 | 通用电气公司 | Preparation apparatus and preparation method of coal water slurry |
| CN105695008A (en) * | 2014-11-27 | 2016-06-22 | 通用电气公司 | Method and apparatus for preparing coal water slurry |
| CN104388137A (en) * | 2014-12-12 | 2015-03-04 | 湖南科技大学 | Method for preparing high concentration sludge coal slurry from urban sludge |
| CN104962331A (en) * | 2015-07-03 | 2015-10-07 | 中国东方电气集团有限公司 | Method for preparing coal water slurry from low-rank coal |
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