CN116376608A - Coal water slurry additive taking papermaking black liquor as raw material and preparation method thereof - Google Patents
Coal water slurry additive taking papermaking black liquor as raw material and preparation method thereof Download PDFInfo
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- CN116376608A CN116376608A CN202310012007.4A CN202310012007A CN116376608A CN 116376608 A CN116376608 A CN 116376608A CN 202310012007 A CN202310012007 A CN 202310012007A CN 116376608 A CN116376608 A CN 116376608A
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- black liquor
- water slurry
- additive
- mass
- coal water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000003245 coal Substances 0.000 title claims abstract description 34
- 239000000654 additive Substances 0.000 title claims abstract description 33
- 230000000996 additive effect Effects 0.000 title claims abstract description 28
- 239000002002 slurry Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000002994 raw material Substances 0.000 title claims description 15
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 239000003250 coal slurry Substances 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 239000003054 catalyst Substances 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 3
- 239000000843 powder Substances 0.000 claims description 13
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 238000001694 spray drying Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 2
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims 2
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 5
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229930040373 Paraformaldehyde Natural products 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229940015043 glyoxal Drugs 0.000 description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 229920002866 paraformaldehyde Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 description 2
- 229910000342 sodium bisulfate Inorganic materials 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-M naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-M 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920001467 poly(styrenesulfonates) Polymers 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 229940006186 sodium polystyrene sulfonate Drugs 0.000 description 1
- HIEHAIZHJZLEPQ-UHFFFAOYSA-M sodium;naphthalene-1-sulfonate Chemical compound [Na+].C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 HIEHAIZHJZLEPQ-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006277 sulfonation reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
-
- 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
- C10L1/146—Macromolecular compounds according to different macromolecular groups, mixtures thereof
-
- 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
- C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
- C10L2230/04—Catalyst added to fuel stream to improve a reaction
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
Abstract
The invention discloses a water-coal-slurry additive synthesized by papermaking black liquor and a preparation method thereof, which comprises the following specific steps: (1) Heating 100 parts by mass (dry weight) of papermaking black liquor to 30-70 ℃, adding 10-20 parts by mass of sulfonating agent, uniformly stirring, then continuously heating to 70-100 ℃, and preserving heat for 30-120 minutes; (2) Cooling to 40-80 ℃, adding 5-10 parts by mass of catalyst and 5-10 parts by mass of cross-linking agent, heating to 80-110 ℃, and preserving heat for 10-90 minutes; (3) Cooling to 20-50 ℃, adding 5-10 parts by mass of catalyst, and drying the feed liquid to obtain the solid-containing 85-100% coal water slurry additive. The additive is applied to the coal water slurry industry, can effectively improve the concentration and stability of the coal water slurry, reduces the transportation cost of the coal water slurry, and further improves the production efficiency. In addition, the product mainly uses papermaking waste liquid, reduces energy consumption and manufacturing cost, has social significance of energy conservation and emission reduction, and is simple in preparation method and convenient to operate.
Description
Technical Field
The invention belongs to the field of coal water slurry additives, and particularly relates to a coal water slurry additive taking papermaking black liquor as a raw material and a preparation method thereof.
Background
The water-coal slurry is a new-type coal-base liquid fuel raised in 70 years, and is made up by using 65% of coal, 34% of water and 1% of chemical additive through a certain preparation process, and its ash content and sulfur content are low, and its flame centre temperature is low, combustion efficiency is high, and smoke dust and SO 2 NO and NO X Discharge ofThe amount is lower than that of fuel oil and fire coal. Many countries have studied, developed and reserved as a fuel technology using coal instead of oil based on long-term energy strategic consideration, and have been commercially used.
At present, the main source of the papermaking black liquor is papermaking industry waste pulp, and most of the papermaking black liquor is burned after alkali recovery, so that serious environmental pollution is caused, and great waste of resources is also caused. Therefore, the papermaking waste liquid is effectively utilized, and the corresponding water-coal-slurry additive product is developed, so that the cost performance of the water-coal-slurry dispersing agent can be improved, and the water-coal-slurry dispersing agent has obvious economic benefit, environmental benefit and social benefit.
Disclosure of Invention
To achieve the above object, the present invention provides the following solutions.
A water coal slurry additive taking papermaking black liquor as a raw material and a preparation method thereof specifically comprise the following steps:
(1) Heating 100 parts by mass (dry weight) of papermaking black liquor to 30-70 ℃, adding 10-20 parts by mass of sulfonating agent, uniformly stirring, then continuously heating to 70-100 ℃, and preserving heat for 30-120 minutes;
(2) Cooling to 40-80 ℃, adding 5-10 parts by mass of catalyst and 5-10 parts by mass of cross-linking agent, heating to 80-110 ℃, and preserving heat for 10-90 minutes;
(3) Cooling to 20-50 ℃, adding 5-10 parts by mass of catalyst, and drying the feed liquid to obtain the solid-containing 85-100% coal water slurry additive.
Preferably, the black liquor comprises an aqueous solution of a black liquor dry powder or a liquid black liquor; more preferably, in the aqueous solution of the papermaking black liquor dry powder, the mass ratio of the papermaking black liquor dry powder to water is 1:2-4.
Optimally, in the aqueous solution of the papermaking black liquor dry powder, the mass ratio of the papermaking black liquor dry powder to water is 1:3.
Preferably, the sulfonating agent comprises one or more of formaldehyde, paraformaldehyde, glyoxal.
Preferably, the cross-linking agent comprises one or more of maleic anhydride, methyl methacrylate, acrylonitrile.
Preferably, the catalyst comprises one or more of hydrogen peroxide, sodium persulfate and liquid alkali.
Preferably, in the step (1), the temperature before adding the sulfonating agent is 50-70 ℃, and the heat preservation time after adding the sulfonating agent is 50-70 minutes.
Preferably, in the step (2), the temperatures before and after the catalyst and the crosslinking agent are added are 60-80 ℃ and 85-105 ℃ respectively, and the incubation time is 10-30 minutes.
Preferably, in the step (3), the temperature is reduced to 30-45 ℃.
Preferably, in the step (3), the drying is spray drying.
In this scheme, the first step is basically sulfonation reaction, and the second step is crosslinking reaction and partial graft copolymerization reaction, thereby generating more complex hydrophilic molecular structure.
Compared with the prior art, the invention has the following advantages:
1. for the traditional coal water slurry, the common coal water slurry additives comprise naphthalene sulfonate polymer, sodium polystyrene sulfonate, sodium lignin sulfonate and the like, the addition amount is about 0.5% -1%, and most additives are poor in single use effect and need to be added with a part of stabilizers and other auxiliary additives. The product has the characteristics of wide single application range, small addition amount, good stability of the coal water slurry product, good fluidity and low price.
2. The papermaking black liquor dry powder and the liquid papermaking black liquor used in the invention are directly provided by papermaking enterprises, can be directly used for experimental reaction without any treatment, and meet the production requirements of workshops. In addition, the process uses papermaking black liquor to make a certain contribution to environmental protection and high-value utilization.
3. Finally, the product manufactured by the process has good application performance, which shows that the process can provide corresponding help for optimizing the later-stage coal water slurry additive.
Detailed Description
The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention. The experimental methods, in which specific conditions are not noted in the following examples, were selected according to conventional methods and conditions, or according to the commercial specifications.
Example 1
A water coal slurry additive taking papermaking black liquor as a raw material and a preparation method thereof specifically comprise the following steps:
(1) Adding an aqueous solution of papermaking black liquor dry powder (100 g of papermaking black liquor dry powder and 400g of deionized water) into the bottom of a kettle, heating to 70 ℃, adding 10g of sulfonating agent formaldehyde, heating to 90 ℃, and preserving heat for 60 minutes;
(2) Cooling to 80 ℃, adding 10g of liquid alkali and 8g of maleic anhydride, heating to 95 ℃, and preserving heat for 10 minutes;
(3) Cooling to 40 ℃, adding 10g of hydrogen peroxide, and spray-drying to obtain the coal water slurry additive with the solid content of 95%.
Example 2
A water coal slurry additive taking papermaking black liquor as a raw material and a preparation method thereof specifically comprise the following steps:
(1) Adding an aqueous solution of papermaking black liquor dry powder (100 g of papermaking black liquor dry powder and 300g of deionized water) into the bottom of a kettle, heating to 65 ℃, adding 10g of paraformaldehyde, heating to 90 ℃, and preserving heat for 70 minutes;
(2) Cooling to 80 ℃, adding 8g of hydrogen peroxide and 8g of methyl methacrylate, heating to 95 ℃, and preserving heat for 10 minutes;
(3) Cooling to 40 ℃, adding 10g of liquid alkali, and spray drying to obtain the coal water slurry additive with the solid content of 95%.
Example 3
A water coal slurry additive taking papermaking black liquor as a raw material and a preparation method thereof specifically comprise the following steps:
(1) Adding 500g of liquid papermaking black liquor (100 g of dry weight) into the bottom of a kettle, heating to 70 ℃, adding 7g of glyoxal, heating to 80 ℃, and preserving heat for 70 minutes;
(2) Cooling to 70 ℃, adding 5g of sodium bisulfate and 4g of liquid alkali, 7g of acrylonitrile, heating to 90 ℃, and preserving heat for 20 minutes;
(3) Cooling to 45 ℃, adding 5g of sodium bisulfate and 4g of liquid alkali, and spray-drying to obtain the coal water slurry additive with the solid content of 95%.
Comparative example 1
Sodium naphthalene sulfonate polymer (commercial coal water slurry additive).
Effect of the invention
Coal water slurry experiments were conducted by using Yanzhou coal and elm coal provided by Jining Ming's New Material Co., ltd as raw materials, respectively adding samples of examples 1 to 3 and comparative example 1 as additives, and testing the properties of the obtained coal water slurry according to national standard GB/T18856.6-2002, and specific results are shown in tables 1 to 2.
Table 1 results of coal-water slurry experiments
Table 2 experimental results of Ulmin coal water slurry
From the above detection results, it can be seen that: compared with the comparative example, the addition of 0.18% of the water-coal-slurry additive is applied to the Yanzhou coal and the elm woody coal, the product consumption is less, the pulping concentration is slightly good, the viscosity is slightly low, the water-separating rate and the stability are slightly good, the water-coal-slurry additive prepared by modifying papermaking black liquor is proved to be mixed, the cost can be reduced, the aim of high-efficiency utilization of biomass resources is achieved, and the produced water-coal-slurry product has high concentration, low viscosity, good fluidity and good stability.
The foregoing has shown and described the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A water coal slurry additive taking papermaking black liquor as a raw material and a preparation method thereof are characterized by comprising the following specific steps:
(1) Heating 100 parts by mass (dry weight) of papermaking black liquor to 30-70 ℃, adding 10-20 parts by mass of sulfonating agent, uniformly stirring, then continuously heating to 70-100 ℃, and preserving heat for 30-120 minutes;
(2) Cooling to 40-80 ℃, adding 5-10 parts by mass of catalyst and 5-10 parts by mass of cross-linking agent, heating to 80-110 ℃, and preserving heat for 10-90 minutes;
(3) Cooling to 20-50 ℃, adding 5-10 parts by mass of catalyst, and drying the feed liquid to obtain the solid-containing 85-100% coal water slurry additive.
2. The additive for coal water slurry using black paper making liquid as raw material and its preparing process according to claim 1, wherein the black paper making liquid comprises aqueous solution of dry powder of black paper making liquid or liquid black paper making liquid; wherein, in the aqueous solution of the papermaking black liquor dry powder, the mass ratio of the papermaking black liquor dry powder to water is 1:2-4.
3. The additive for coal water slurry using papermaking black liquor as raw material and preparation method thereof according to claim 1, wherein the cross-linking agent comprises one or more of maleic anhydride, styrene, methyl methacrylate and acrylonitrile.
4. The additive for coal water slurry using papermaking black liquor as raw material and preparation method thereof according to claim 1, wherein the catalyst comprises one or more of hydrogen peroxide, sodium persulfate and liquid alkali.
5. The additive for coal water slurry using papermaking black liquor as raw material and its preparation method as claimed in claim 1, wherein in the step (1), the temperature before adding the sulfonating agent is 50-70 ℃, and the heat preservation time after adding the sulfonating agent is 50-70 minutes.
6. The additive for coal water slurry using papermaking black liquor as raw material and its preparation method as claimed in claim 1, wherein in the step (2), the temperatures before and after adding the catalyst and the cross-linking agent are respectively 60-80 ℃ and 85-105 ℃, and the heat preservation time is 10-30 minutes.
7. The additive for coal water slurry prepared from papermaking black liquor as a raw material and a preparation method thereof according to claim 1, wherein in the step (3), the temperature is reduced to 30-45 ℃; the drying adopts spray drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310012007.4A CN116376608A (en) | 2023-01-05 | 2023-01-05 | Coal water slurry additive taking papermaking black liquor as raw material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310012007.4A CN116376608A (en) | 2023-01-05 | 2023-01-05 | Coal water slurry additive taking papermaking black liquor as raw material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116376608A true CN116376608A (en) | 2023-07-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310012007.4A Pending CN116376608A (en) | 2023-01-05 | 2023-01-05 | Coal water slurry additive taking papermaking black liquor as raw material and preparation method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN116376608A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101322927A (en) * | 2008-07-29 | 2008-12-17 | 华南理工大学 | Coal water slurry dispersing agent made from black-liquor of straw pulping in paper-making and preparation thereof |
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| CN111088086A (en) * | 2019-12-31 | 2020-05-01 | 宁波中科远东催化工程技术有限公司 | Lignin-humic acid based dispersing agent and preparation method and application thereof |
| CN111575069A (en) * | 2020-04-27 | 2020-08-25 | 黎茜茜 | Preparation method of composite coal water slurry additive |
| CN212205335U (en) * | 2020-04-09 | 2020-12-22 | 南京中衡元环保科技有限公司 | Water-coal-slurry gasification coarse slag dewatering and drying treatment system |
| CN112442399A (en) * | 2020-08-26 | 2021-03-05 | 安徽鑫固环保股份有限公司 | Method for synthesizing dispersing agent from phenol-containing wastewater |
| JP7056987B1 (en) * | 2020-11-11 | 2022-04-19 | ▲広▼西大学 | Method for preparing amphipathic lignin nanomaterials from pulped black liquor, amphipathic lignin nanomaterials, sludge cleaner |
| CN115418255A (en) * | 2022-09-13 | 2022-12-02 | 南京大学 | Synthetic method for preparing coal water slurry additive by oxidizing, grafting and modifying papermaking black liquor and using method thereof |
-
2023
- 2023-01-05 CN CN202310012007.4A patent/CN116376608A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101322927A (en) * | 2008-07-29 | 2008-12-17 | 华南理工大学 | Coal water slurry dispersing agent made from black-liquor of straw pulping in paper-making and preparation thereof |
| CN108587709A (en) * | 2018-05-18 | 2018-09-28 | 萧县沃德化工科技有限公司 | The method that beta naphthal waste liquor and reaction residue prepare slurries additive agent |
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| CN111575069A (en) * | 2020-04-27 | 2020-08-25 | 黎茜茜 | Preparation method of composite coal water slurry additive |
| CN112442399A (en) * | 2020-08-26 | 2021-03-05 | 安徽鑫固环保股份有限公司 | Method for synthesizing dispersing agent from phenol-containing wastewater |
| JP7056987B1 (en) * | 2020-11-11 | 2022-04-19 | ▲広▼西大学 | Method for preparing amphipathic lignin nanomaterials from pulped black liquor, amphipathic lignin nanomaterials, sludge cleaner |
| CN115418255A (en) * | 2022-09-13 | 2022-12-02 | 南京大学 | Synthetic method for preparing coal water slurry additive by oxidizing, grafting and modifying papermaking black liquor and using method thereof |
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