CN106833778B - A kind of method that recycling sludge processing prepares water-coal-slurry - Google Patents
A kind of method that recycling sludge processing prepares water-coal-slurry Download PDFInfo
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- CN106833778B CN106833778B CN201710260454.6A CN201710260454A CN106833778B CN 106833778 B CN106833778 B CN 106833778B CN 201710260454 A CN201710260454 A CN 201710260454A CN 106833778 B CN106833778 B CN 106833778B
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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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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/004—Sludge detoxification
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
- C02F11/08—Wet air oxidation
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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
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/24—Organic compounds containing sulfur, selenium and/or tellurium
- C10L1/2431—Organic compounds containing sulfur, selenium and/or tellurium sulfur bond to oxygen, e.g. sulfones, sulfoxides
- C10L1/2437—Sulfonic acids; Derivatives thereof, e.g. sulfonamides, sulfosuccinic acid esters
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
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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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/28—Cutting, disintegrating, shredding or grinding
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses the methods that a kind of processing of recycling sludge prepares water-coal-slurry：1. sludge waste water of basic printing and dyeing tune pH value is 10.0 14.0, hydrogen peroxide is then added in sludge is stirred mixing；It is handled 2. mixed sludge enters microwave high pressure heating response device, condition is 300 800w of microwave power, 20 50MPa of pressure, 5 15min of time；3. by by the sludge of microwave treatment and waste water of basic printing and dyeing, coal, dispersant, sludge water-coal-slurry is prepared by 10 20min of ball mill ore grinding.The ingredient of sludge water-coal-slurry is：In parts by weight, 15 30 parts of sludge, 0.1 part of hydrogen peroxidase 10 .05,15 45 parts of waste water of basic printing and dyeing, 0.005 0.01 parts of dispersant, 40 60 parts of coal dust.Polyacrylamide macromolecule in sludge effectively can be degraded to small molecule by the method for sludge treatment of the present invention, improve the sludge incorporation when prepared by water-coal-slurry, improve the processing capacity of sludge, waste water of basic printing and dyeing is utilized simultaneously, the discharge for reducing waste water provides effective technological approaches for the recycling of sludge, minimizing, harmless treatment.
Description
Technical field
The present invention relates to the sides that desulfurization wastewater process field, in particular to a kind of processing of recycling sludge prepare water-coal-slurry
Method.
Background technology
With the fast development of Chinese Urbanization, industrial development is getting faster, all trades and professions generate a large amount of waste water and
Sludge, about 6,000,000 tons/year of the dewatered sludge yield of sewage treatment plant's discharge at present, and increased every year with the speed more than 10%, ring
Pollute getting worse in border.Industrial wastewater and sludge are due to moisture, content of ashes height, complicated component, it is difficult to disposition and utilization.But it
All contain a certain amount of combustable organic object, have certain calorific value and a kind of valuable resource.Waste water and sludge can be used
Water-coal-slurry is produced, efficient burning is able to, can not only be provided for the recycling of waste water and sludge, minimizing and harmless treatment
One new approach, can also be sparing in the use of coal, using water wisely, to reduce water-coal-slurry slurring cost.Water-coal-slurry is a kind of novel
Coal derived fuel, be the 1970s world oil crisis grow up, have convenient transportation, high combustion efficiency, pollutant
The advantages such as discharge capacity is low can replace fuel oil to be used for station boiler, Industrial Boiler and Industrial Stoves.China is answered extensively at present
With achieving preferable economic benefit and environmental benefit.Ended for the end of the year 2016, all kinds of pulp mill's designed productive capacities in the whole nation have surpassed
100,000,000 tons/year are crossed, however, there is slurrying coals to limit in evolution, sludge incorporation is less, water coal for COAL-WATER SLURRY TECHNOLOGY
The problems such as on the high side is starched, the further development of COAL-WATER SLURRY TECHNOLOGY industrialization is restrict.As society is to the continuous of environmental requirement
It improves, COAL-WATER SLURRY TECHNOLOGY must constantly bring forth new ideas and make a breakthrough on the basis of existing, can adapt to today's society to economy
The requirement of benefit and environmental protection.
The country is more to the research of sludge slurrying, has plenty of and directly carries out proportioning and prepare coal slurry sludge with coal, has plenty of
It is added in sludge after solid industrial chemicals is modified and prepares coal slurry again, these methods all have sludge additive amount few (10%
Below), coal-water fluid concentration low (calorific value is less than 4000kcal/kg), sludge cannot flow, and can only be stirred with finished product coal slurry after ore grinding
It mixes sludge coal slurry or the additive of the general amount of slurrying must be used.Especially polyacrylamide can be added in waste water in processing procedure
Amine, since the presence of polyacrylamide macromolecular causes the incorporation of sludge to be limited by high degree, how by polypropylene
It is to restrict the key factor that sludge quantity is mixed in coal slurry that amide macro, which is degraded to small molecule, domestic a lot of preparations at present
The patent of water-coal-slurry is all not involved with the processing of polyacrylamide macromolecules degradation problem, therefore different degrees of presence is dirty
Mud additive amount is low, and dispersant, stabilizer additive amount are excessive, and slurrying cost is caused to increase, and sludge treatment capacity is smaller.
Invention content
The method that a kind of recycling sludge provided by the invention prepares water-coal-slurry, unlike sludge is mixed coal in commonsense method
In powder or coal slurry, additive amount is relatively low, while needing more dispersant, and production cost is higher, affects the use of sludge.This hair
It is bright by sludge carry out microwave treatment, on the one hand utilize microwave fuel factor and non-thermal effect to the polyacrylamide inside sludge
Amine is degraded, and still further aspect utilizes the synergistic effect of microwave and hydrogen peroxide, further induces hydrogen peroxide oxidation degradation
Polyacrylamide, while can also play the role of sterilization to sludge using microwave.By the way that the polyacrylamide in sludge is big
Molecular degradation is small molecule, volume of the sludge in water-coal-slurry is on the one hand improved, on the other hand due to polyacrylamide itself
Also play the effect of stabilizer, that is, reduce the dosage of stabilizer in water-coal-slurry, not only to the recycling of sludge, minimizing and
Harmless treatment provides a new approach, can also be sparing in the use of coal, using water wisely, economize on agent to reduce water-coal-slurry system
Starch cost.
A kind of sludge water-coal-slurry：By weight, which includes 15-30 parts of sludge, hydrogen peroxidase 10 .05-
0.1 part, 15-45 parts of waste water of basic printing and dyeing, 0.005-0.01 parts of dispersant, 40-60 parts of coal dust.
The present invention is realized in order to preferably realize, further, the sludge is municipal sludge, and moisture percentage in sewage sludge is：80-
85%.
The present invention is realized in order to preferably realize, further, the waste water of basic printing and dyeing, pH 9.0-14.0.
The present invention is realized in order to preferably realize, further, the dispersant is naphthalene sulfonic salt, lignosulfonates
In one or two kinds of mixture.
In order to preferably realize realize the present invention, further, the coal dust be bituminous coal powder, one kind in anchracite duff or
The mixture that two kinds of person.
A kind of method that recycling sludge processing prepares water-coal-slurry, includes the following steps：
A, raw material preparation：In parts by weight, sludge 15-30 parts .05-0.1 parts of hydrogen peroxidase 10, waste water of basic printing and dyeing 15-
45 parts, 0.005-0.01 parts of dispersant, 40-60 parts of coal dust；
B, it pre-processes：Sludge waste water of basic printing and dyeing adjusts pH value to 10.0-14.0, and peroxidating is then added in sludge
Hydrogen stirs evenly；
C, microwave treatment：The sludge stirred evenly is handled by microwave high pressure heating response device；
D, ball mill ore grinding：By the sludge handled well by microwave high pressure heating response device and waste water of basic printing and dyeing, dispersion
Agent and coal dust mix in ball mill, and ball milling is carried out after mixing and obtains water-coal-slurry.
The present invention is realized in order to preferably realize, further, waste water of basic printing and dyeing described in step b, pH value 9.0-
14.0。
The present invention is realized in order to preferably realize, further, the amount that hydrogen peroxide is added described in step b is 0.05-0.1
Part.
The present invention is realized in order to preferably realize, further, the item that microwave high pressure heating response device described in step c is handled
Part is microwave power 300-800w, pressure 20-50MPa, time 5-15min.
The present invention is realized in order to preferably realize, further, dispersant described in step d is naphthalene sulfonic salt.
The present invention is realized in order to preferably realize, further, which is characterized in that coal dust described in step d is bituminous coal powder.
The present invention is realized in order to preferably realize, further, temperature is 80-100 when ball mill ore grinding described in step d
DEG C, the ore grinding time is 10-20min.
The beneficial effects of the present invention are：The method according to the invention carries out microwave high pressure heat treatment, a side to sludge
Face degrades to the polyacrylamide inside sludge using the fuel factor and non-thermal effect of microwave, and still further aspect utilizes microwave
With the synergistic effect of hydrogen peroxide, hydrogen peroxide oxidation degradation of polypropylene amide is further induced, while can also using microwave
Play the role of sterilization to sludge.By being small molecule by the polyacrylamide macromolecules degradation in sludge, improves sludge and exist
Volume in water-coal-slurry reduces the dosage of stabilizer in water-coal-slurry, not only to the recycling of sludge, minimizing and innoxious place
Reason provides a new approach, can also be sparing in the use of coal, using water wisely, economize on agent to reduce water-coal-slurry slurring cost.
Link is reacted using a sludge microwave high pressure heating is increased before existing water-coal-slurry production line；Pulping process
Simply, energy saving and slurrying cost；Sludge additive amount is high, and sludge water-coal-slurry slurry concentration has preferable up to 60%
Mobility, stability and rheological characteristic are the recycling of sludge, minimizing, innoxious while the calorific value for making full use of sludge
Provide effective technological approaches.
Specific implementation mode
The present invention is described in further detail with reference to embodiment, embodiments of the present invention are not limited thereto,
Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and customary means, various replace is made
It changes and changes, should all be included within the scope of the invention.
Embodiment 1
A kind of method that recycling sludge processing utilizes, this approach includes the following steps：
A, raw material preparation：In parts by weight, 15 parts of sludge .05 parts of hydrogen peroxidase 10,45 parts of waste water of basic printing and dyeing, dispersant
0.01 part, 60 parts of coal dust；
B, it pre-processes：Sludge waste water of basic printing and dyeing adjusts pH value to 10.8, and hydrogen peroxide is then added in sludge and stirs
It mixes uniformly；
C, microwave treatment：The sludge that hydrogen peroxide is added is handled by microwave high pressure heating response device, microwave power
For 300w, pressure 50MPa, time 15min；
D, ball mill ore grinding：By the sludge handled well by microwave high pressure heating response device and waste water of basic printing and dyeing, dispersion
Agent and coal dust mix in ball mill, and ore grinding temperature is 80 DEG C, and ore grinding 20min obtains water-coal-slurry.
Embodiment 2
A kind of method that recycling sludge processing utilizes, this approach includes the following steps：
A, raw material preparation：In parts by weight, 18 parts of sludge .06 parts of hydrogen peroxidase 10,42 parts of waste water of basic printing and dyeing, dispersant
0.009 part, 55 parts of coal dust；
B, it pre-processes：Sludge waste water of basic printing and dyeing adjusts pH value to 11.6, and hydrogen peroxide is then added in sludge and stirs
It mixes uniformly；
C, microwave treatment：The sludge that hydrogen peroxide is added is handled by microwave high pressure heating response device, microwave power
For for 400w, pressure 45MPa, time 13min；
D, ball mill ore grinding：By the sludge handled well by microwave high pressure heating response device and waste water of basic printing and dyeing, dispersion
Agent and coal dust mix in ball mill, and ore grinding temperature is 85 DEG C, and ore grinding 18min obtains water-coal-slurry.
Embodiment 3
A kind of method that recycling sludge processing utilizes, this approach includes the following steps：
A, raw material preparation：In parts by weight, 20 parts of sludge .07 parts of hydrogen peroxidase 10,40 parts of waste water of basic printing and dyeing, dispersant
0.008 part, 50 parts of coal dust；
B, it pre-processes：Sludge waste water of basic printing and dyeing adjusts pH value to 11.4, and hydrogen peroxide is then added in sludge and stirs
It mixes uniformly；
C, microwave treatment：The sludge that hydrogen peroxide is added is handled by microwave high pressure heating response device, microwave power
For 500w, pressure 40MPa, time 10min；
D, ball mill ore grinding：By the sludge handled well by microwave high pressure heating response device and waste water of basic printing and dyeing, dispersion
Agent and coal dust mix in ball mill, and ore grinding temperature is 90 DEG C, and ore grinding 15min obtains water-coal-slurry.
Embodiment 4
A kind of method that recycling sludge processing utilizes, this approach includes the following steps：
A, raw material preparation：In parts by weight, 25 parts of sludge .08 parts of hydrogen peroxidase 10,35 parts of waste water of basic printing and dyeing, dispersant
0.007 part, 45 parts of coal dust；
B, it pre-processes：Sludge waste water of basic printing and dyeing adjusts pH value to 12.2, and hydrogen peroxide is then added in sludge and stirs
It mixes uniformly；
C, microwave treatment：The sludge that hydrogen peroxide is added is handled by microwave high pressure heating response device, microwave power
For for 600w, pressure 35MPa, time 9min；
D, ball mill ore grinding：By the sludge handled well by microwave high pressure heating response device and waste water of basic printing and dyeing, dispersion
Agent and coal dust mix in ball mill, and ore grinding temperature is 95 DEG C, and ore grinding 13min obtains water-coal-slurry.
Embodiment 5
A kind of method that recycling sludge processing utilizes, this approach includes the following steps：
A, raw material preparation：In parts by weight, 27 parts of sludge .09 parts of hydrogen peroxidase 10,25 parts of waste water of basic printing and dyeing, dispersant
0.006 part, 46 parts of coal dust；
B, it pre-processes：Sludge waste water of basic printing and dyeing adjusts pH value to 13.1, and hydrogen peroxide is then added in sludge and stirs
It mixes uniformly；
C, microwave treatment：The sludge that hydrogen peroxide is added is handled by microwave high pressure heating response device, microwave power
For for 700w, pressure 30MPa, time 12min；
D, ball mill ore grinding：By the sludge handled well by microwave high pressure heating response device and waste water of basic printing and dyeing, dispersion
Agent and coal dust mix in ball mill, and ore grinding temperature is 95 DEG C, and ore grinding 13min obtains water-coal-slurry.
Embodiment 6
A kind of method that recycling sludge processing utilizes, this approach includes the following steps：
A, raw material preparation：In parts by weight, 30 parts of sludge .1 parts of hydrogen peroxidase 10,20 parts of waste water of basic printing and dyeing, dispersant
0.005 part, 40 parts of coal dust；
B, it pre-processes：Sludge waste water of basic printing and dyeing adjusts pH value to 13.8, and hydrogen peroxide is then added in sludge and stirs
It mixes uniformly；
C, microwave treatment：The sludge that hydrogen peroxide is added is handled by microwave high pressure heating response device, microwave power
For for 800w, pressure 20MPa, time 5min；
D, ball mill ore grinding：By the sludge handled well by microwave high pressure heating response device and waste water of basic printing and dyeing, dispersion
Agent and coal dust mix in ball mill, and ore grinding temperature is 100 DEG C, and ore grinding 10min obtains water-coal-slurry.
The evaluation of result of 1 example of the present invention of table
| Project | Concentration/% | Viscosity/(mPa s) | Mobility | Stability |
| Embodiment 1 | 60.6 | 1146 | A | B |
| Embodiment 2 | 59.9 | 1188 | A | B |
| Embodiment 3 | 59.2 | 1167 | A | B |
| Embodiment 4 | 59.6 | 1193 | A | A |
| Embodiment 5 | 59.4 | 1203 | A | A |
| Embodiment 6 | 58.8 | 1212 | A | A |
Conclusion：The mobility for the sludge water-coal-slurry that preparation method through the invention is prepared can be obtained according to upper table very
It is good, reach A grades, in addition the stability of sludge water-coal-slurry is also preferable, has reached B grades or more.
Note：It is the evaluation more intuitive index of slurry quality whether water-coal-slurry mobility flows smooth for characterizing slurry,
Its assay method takes ocular estimate, can be divided into A, B, C, this 4 grades of D.Wherein A is that mobility is fine, continuous to flow；B is stream
Dynamic property is preferable, semicontinuous flowing；C is to have certain fluidity, discontinuous flow；D is no mobility.
The method for estimating stability of water-coal-slurry inserts method observation using traditional stick, i.e., by the tested closed standing of water-coal-slurry sample
After for 24 hours, the precipitation status of water-coal-slurry is observed.The judgement of water coal slurry stability is divided into 4 grades；A grades keep it initial for slurry
State, no bleed and precipitation generate；B grades are there are a small amount of bleeds or a little soft precipitation to generate；C grades generate to have to precipitate, density
It is unevenly distributed, but agitated rear renewable；D grades precipitate firmly for generation partly precipitated or all.
The interpretation of result of 2 example of the present invention of table
| Project | Sludge | Hydrogen peroxide | Waste water of basic printing and dyeing | Dispersant | Coal dust | Sludge mixes ratio |
| Embodiment 1 | 15 | 0.05 | 45 | 0.01 | 60 | 20% |
| Embodiment 2 | 18 | 0.06 | 42 | 0.009 | 55 | 24% |
| Embodiment 3 | 20 | 0.07 | 40 | 0.008 | 50 | 28% |
| Embodiment 4 | 25 | 0.08 | 35 | 0.007 | 45 | 35% |
| Embodiment 5 | 27 | 0.09 | 25 | 0.006 | 46 | 37% |
| Embodiment 6 | 30 | 0.1 | 20 | 0.005 | 40 | 42% |
As a result：It can be obtained according to upper table in the sludge water-coal-slurry that preparation method through the invention is prepared, sludge is mixed
Than being both greater than 20%, the peak of test reaches 42%, this is mixed relative to existing general sludge water-coal-slurry sludge than 10% left side
The right side increases substantially.
Note：As seen from the table, sludge by microwave microwave high pressure heat treatment after and waste water of basic printing and dyeing, dispersant and
Volume is greatly improved after coal dust mixing, and in water-coal-slurry obtained, the ratio that sludge accounts for coal dust is 20-42%, than without micro-
The incorporation 5-10% of the sludge of wave processing will be higher by much.
It should be pointed out that above example is only the preferred embodiment of the present invention, the above embodiment is not construed as
Limitation of the present invention, protection scope of the present invention should be subject to the range that claim is limited.For the art
Those of ordinary skill for, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made and also answered
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of method that recycling sludge processing prepares water-coal-slurry, it is characterised in that：By weight, the water-coal-slurry is at subpackage
It includes, 15-30 parts of sludge .05-0.1 parts of hydrogen peroxidase 10,15-45 parts of waste water of basic printing and dyeing, dispersant 0.005-0.01
Part, 40-60 parts of coal dust；
The sludge is municipal sludge, and moisture percentage in sewage sludge is： 80-85%；
The waste water of basic printing and dyeing, pH 9.0-14.0；
The method that the recycling sludge processing prepares water-coal-slurry, includes the following steps：
A, raw material preparation：In parts by weight, sludge 15-30 parts .05-0.1 parts of hydrogen peroxidase 10, waste water of basic printing and dyeing 15-
45 parts, 0.005-0.01 parts of dispersant, 40-60 parts of coal dust；
B, it pre-processes：Sludge waste water of basic printing and dyeing adjusts pH values to 10.0-14.0, and peroxidating is then added in sludge
Hydrogen stirs evenly；
C, microwave treatment：The sludge stirred evenly is handled by microwave high pressure heating response device；The microwave high pressure adds
The condition of thermal reactor processing is microwave power 300-800w, pressure 20-50MPa, time 5-15 min；
D, ball mill ore grinding：By the sludge handled well by microwave high pressure heating response device and remaining waste water of basic printing and dyeing, dispersion
Agent and coal dust mix in ball mill, and ball milling is carried out after mixing and obtains water-coal-slurry.
2. the method for preparing water-coal-slurry according to a kind of recycling sludge processing described in claim 1, it is characterised in that：It is described
Dispersant is one or two kinds of mixture in naphthalene sulfonic salt, lignosulfonates.
3. the method for preparing water-coal-slurry according to a kind of recycling sludge processing described in claim 1, it is characterised in that：It is described
Coal dust is one or two kinds of mixture in bituminous coal powder, anchracite duff.
4. a kind of method that recycling sludge processing prepares water-coal-slurry according to claim 1, which is characterized in that step b
The waste water of basic printing and dyeing, pH values are 9.0-14.0.
5. a kind of method that recycling sludge processing prepares water-coal-slurry according to claim 1, which is characterized in that step b
The amount that hydrogen peroxide is added is 0.05-0.1 parts.
6. a kind of method that recycling sludge processing prepares water-coal-slurry according to claim 1, which is characterized in that step d
The dispersant is naphthalene sulfonic salt, and the coal dust is bituminous coal powder, and temperature is 80-100 DEG C when the ball mill ore grinding, ore grinding
Time is 10-20min.
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| CN107267235B (en) * | 2017-06-27 | 2019-09-17 | 中煤科工清洁能源股份有限公司 | A kind of method that more raw materials prepare novel water-coal-slurry product |
| CN110523309A (en) * | 2019-10-14 | 2019-12-03 | 中煤科工清洁能源股份有限公司 | A method of the sedimentation method of modifying of waste, reforming system and high concentration slurry is prepared using modified product |
| CN114249458B (en) * | 2021-12-21 | 2023-09-26 | 福建清源科技有限公司 | Method for cooperatively treating high-concentration polyvinyl alcohol wastewater by coal water slurry and coal water slurry |
| CN114891544A (en) * | 2022-04-29 | 2022-08-12 | 天津博诺环保技术有限公司 | Treatment method for preparing sludge coal water slurry by two-stage modification of sludge |
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