CN108358293A - The preparation method of sanitary sewage disposal composite flocculation agent based on petroleum coke - Google Patents
The preparation method of sanitary sewage disposal composite flocculation agent based on petroleum coke Download PDFInfo
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- CN108358293A CN108358293A CN201810141872.8A CN201810141872A CN108358293A CN 108358293 A CN108358293 A CN 108358293A CN 201810141872 A CN201810141872 A CN 201810141872A CN 108358293 A CN108358293 A CN 108358293A
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- petroleum coke
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
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- Environmental & Geological Engineering (AREA)
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- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention relates to technical field of sewage, more particularly to a kind of preparation method of the sanitary sewage disposal composite flocculation agent based on petroleum coke, including being ground after mixing petroleum coke with nano silicon dioxide, then the step of obtaining carbon molecular sieve, the surface modification treatment step of aluminium-magnesium silicate are handled through charing, activation and Carbon deposition, and the product mixed processing of said two devices is obtained into composite flocculation agent；The present invention passes through the mixed with nano-silicon dioxide in petroleum coke, the silicon carbide being filled in petroleum coke pore structure is formed during high-temperature process, generate CO gas simultaneously reduces petroleum coke hole diminution caused by polycondensation reaction during calcination processing during release, aluminium-magnesium silicate by modification carries out mixed processing with powdered carbon, obtained composite flocculation agent can show preferable flocculating effect in low dosage, to improve the flocculation sediment efficiency of suspended matter in sanitary sewage, difficulty is reduced for subsequent sewage disposal process.
Description
Technical field
The present invention relates to technical field of sewage, more particularly to it is a kind of based on the sanitary sewage disposal of petroleum coke with compound
The preparation method of flocculant.
Background technology
Sanitary sewage is the waste water being discharged in resident's daily life, and pollutant contained therein is mainly organic matter, such as egg
White matter, carbohydrate, fat, urea, ammonia nitrogen etc. and a large amount of pathogenic microorganisms, such as parasitic ovum and enteric infection virus,
The organic matter being present in sanitary sewage is extremely unstable, is easy corruption and generates stench.Bacterium and pathogen are in sanitary sewage
Organic matter for nutrition mass propagation, infectious disease from spreading can be caused popular.Therefore, sanitary sewage must be located before discharging
Reason.
In the processing procedure of sanitary sewage, in order to remove or reduce the turbidity or suspended matter in water, it is made to generate big
The condensate of grain accelerates the sinking speed of the impurity and sludge in sewage, is typically employed in sewage and flocculant is added.It is general next
It says, flocculant includes inorganic flocculating agent and organic flocculant two major classes.Inorganic flocculating agent is mainly by two kinds of aluminium salt and molysite, such as sulphur
Sour aluminium, polyoxygenated aluminium, iron chloride and ferrous sulfate etc.；Organic flocculant can be divided into anionic, cationic by its charging property
It is mainly (cationic by Sodium Polyacrylate, carboxymethyl cellulose (anionic), polyvinyl with nonionic three classes
Type), polyethylene oxide, polyacrylamide (nonionic) etc..
Flocculant it is various in style, be to cheap reality from single type to compound, total trend from low molecule to macromolecule
Developed with the direction of, non-toxic efficient.Inorganic flocculating agent is cheap, but will produce unfavorable shadow to human health and ecological environment
It rings；Although organic polymer coargulator dosage is few, dross yield is few, and flocculation ability is strong, and flco can be easily separated, oil removing and except suspend
Object effect is good, but the residual monomer of this kind of high polymer has " three cause " effect (causing rugged, carcinogenic, mutagenesis), thus makes its application
Range is restricted.
Invention content
For the problems of the prior art, the purpose of the present invention is to provide a kind of sanitary sewage disposals based on petroleum coke
With the preparation method of composite flocculation agent, the preparation method is simply special-shaped, and the composite flocculation agent being prepared can quickly, efficiently
Removing suspended matter, and can reuse.
To achieve the goals above, the present invention is achieved by the following scheme：
A kind of preparation method of the sanitary sewage disposal composite flocculation agent based on petroleum coke, includes the following steps：
(1) petroleum coke is crushed to and crossed 40 mesh sieve, is then mixed with nano silicon dioxide, and nano silicon dioxide weight is added
The surfactant of 0.2~0.5 times of amount of amount, stirs to obtain mixture A；
(2) mixture A is added in grinder and grinds 2~5h, be subsequently added into the oxygen of 1.2~1.5 times of amounts of petroleum coke weight
Change property medium, be stirred 30~40min, then filter, and by filter residue be washed with deionized water to filtrate pH value be 6.5~
7.0, then dry filter residue, and filter residue blasted in electric heating converter, be warming up in atmosphere of inert gases 1400~1500 DEG C into
Row charing process, then reduces temperature, is passed through activator and carries out activation process, is finally passed through Carbon deposition reagent and adjust at hole
Reason, after the completion of pending, natural cooling obtains powdered carbon；
(3) titanate coupling agent is added into aluminium-magnesium silicate, be warming up to 100~140 DEG C and insulated and stirred processing 30~
Then hydrolysis of polymaleic anhydride and N- hydroxyethyl acrylamides is added in 40min, continue 1~3h of insulated and stirred, stands and naturally cold
But to room temperature, filtering, it is 6.5~7.0 that filter residue, which is washed to filtrate pH, then dries to constant weight, is changed at 50~60 DEG C
Property processing aluminium-magnesium silicate；
(4) aluminium-magnesium silicate of modified processing in step (3) is added in the powdered carbon of step (2), in the mistake being stirred
The ethanol solution that ethylene glycol diglycidylether is sprayed into journey, it is after being uniformly mixed, mixture is vacuum dried to constant weight,
Then it is transferred to 3~5h of freezing in -20 DEG C of low temperature environment, micro mist then is made to get the compound wadding through micronizer
Solidifying agent.
In the present invention, by the way that the silicon-dioxide powdery of nano silicon dioxide and petroleum coke mixed processing, nano shape is soaked
In the hole for entering petroleum coke, during high-temperature process, the carbon in petroleum coke obtains reducing silica to be filled in oil
Silicon in burnt hole and CO gas, meanwhile, silicon carbide is obtained by the reaction in silicon and carbon during high-temperature process, forms charcoal
The framework supporting structure of molecular sieve, and the release of CO gas reduces volume of petroleum coke during calcination processing and receives
Contracting effect reduces the diminution because of the pore structure that the burning zone of petroleum coke comes.
Hydrolysis of polymaleic anhydride and N- hydroxyethyl acrylamides are introduced on the surface of aluminium-magnesium silicate, passes through surface polymer
Form flocculating effect of the enhancing aluminium-magnesium silicate to suspended matter in sewage；Then by aluminium-magnesium silicate and the above-mentioned charcoal Jing Guo modification
Powder is mixed, and obtained composite flocculation agent can show preferable flocculating effect in low dosage, dirty to improve life
The flocculation sediment efficiency of suspended matter in water reduces difficulty for subsequent sewage disposal process；The composite flocculation obtained in the present invention
Agent has stronger stability and higher structural strength can be by way of vacuum calcining in the recovery processing of sediment
Carry out the recycling of composite flocculation agent.Preferably, in the step (3), the aluminium-magnesium silicate, titanate coupling agent, water
The mass ratio for solving polymaleic anhydride and N- hydroxyethyl acrylamides is (10~25)：(0.5~2)：(5~12)：(5~12).
According to the present invention, ash content≤1.0% of petroleum coke of the present invention, moisture≤5.0%, volatile matter≤15% contains
The addition of carbon amounts >=90%, the nano silicon dioxide can select in a wider scope, and the synthetic quantity of silicon carbide
For the intensity of carbon molecular sieve after thering is direct relationship, excessive nano silicon dioxide to be added with the addition of nano silicon dioxide
Raising is not obvious, and can but waste a large amount of carbon as reducing agent so that and the yield of carbon molecular sieve reduces, preferably, this
The addition of nano silicon dioxide described in invention accounts for 1~5% of phosphorus content in petroleum coke.
In order to improve the dispersion performance of nano silicon dioxide, and immerse in the pore structure of petroleum coke convenient for it, it is described
Surfactant is added in nano silicon dioxide, the preparation method of the surfactant includes being added in sodium metasilicate acid
Substance makes its hydrolysis, and the pH value of hydrolyzation system is 3~5, and organosilicon dressing agent is then added, is stirred 1~3h, is added strong
Alkaline matter, 2~5h of stir process is up to the surfactant for nano silicon dioxide at 40~80 DEG C；
The present invention does not do the acidic materials special requirement, can promote the hydrolysis of sodium metasilicate, for example, institute
The acidic materials stated are one kind in hydrochloric acid, nitric acid, sulfuric acid.
In the present invention, the strong alkaline substance is one kind in sodium hydroxide, potassium hydroxide.
The organosilicon dressing agent is one or more organo-silicon compound, the organic functional of the organo-silicon compound
Group is one or more of methyl, ethyl, vinyl and halogenated alkyl.Specifically, can enumerate such as two silicon of hexamethyl
Azane, N, in N- dimethyl -3- TSL 8330s, a chlorine trimethyl silane and vinyl silane triisopropoxide
One kind.
After nano silicon dioxide and petroleum coke are sufficiently mixed, Oxidant is added, these Oxidants are in oil
A large amount of oxygen-containing group is generated in coke, is deviate from different forms in carbonization process, to form the pore structure compared with horn of plenty,
Volume-diminished and pore structure are brought when the further thermal decomposition for reducing petroleum coke itself and polycondensation reaction abjection volatile matter
Diminution and disappearance problem.Preferably, the Oxidant is selected from 90~98wt%H2SO4Solution, 10~30wt%
H2O2Solution, 10~50wt%HNO3One kind in solution.
The condition of charing process specifically includes in the present invention：Molding is transferred in electric heating converter, inert gas is passed through, is risen
Temperature is to 1400~1500 DEG C of progress charing process, in fact, at 600 DEG C, thermal decomposition and polycondensation can inherently occur for petroleum coke
Reaction abjection volatile matter reacts to obtain silicon carbide, so as to form charcoal through restoring obtained silicon at 1400 DEG C or more with carbon
The framework supporting structure of molecular sieve, it is ensured that carbon molecular sieve have stronger structure, the inert gas can select nitrogen or
Argon gas.
The activation condition specifically includes：The temperature of electric heating converter is reduced to 820~880 DEG C, then passes to vapor,
Using inert gas as carrier, activation process is carried out, the volume that wherein vapor accounts for inert gas is 50~80%.
The Carbon deposition tune hole processing specifically includes, and regarding benzene or methane as carrier by nitrogen or argon gas is passed through electric heating
In converter, the volumetric concentration of benzene or methane is 10~15%, after Carbon deposition tune hole is handled, by its natural cooling, you can obtain
The carbon molecular sieve.
In the present invention, by mixing powdered carbon with the aluminium-magnesium silicate Jing Guo modification, in ethylene glycol diglycidylether
Ethanol solution in, the two is mutually nested to be linked together, and the composite flocculation agent with stronger flocculating effect is obtained.As preferred
, in step (4), the powdered carbon, the aluminium-magnesium silicate of modified processing, ethylene glycol diglycidylether, ethyl alcohol mass ratio be
(25~40)：(5~12)：(1~5)：(12~33).
Compared with prior art, the present invention has the following technical effects：
In the present invention, by the mixed with nano-silicon dioxide in petroleum coke, is formed and be filled in during high-temperature process
Silicon carbide in petroleum coke pore structure, the carbon molecular sieve to make have higher intensity；Meanwhile the nanometer titanium dioxide
The filling of silicon, also will produce CO gas during being restored by carbon, and reducing petroleum coke during release exists
Hole reduces caused by polycondensation reaction during calcination processing, and the carbon molecular sieve ensured that has more dense hole
Gap structure；
Aluminium-magnesium silicate Jing Guo modification is subjected to mixed processing with powdered carbon, obtained composite flocculation agent is in low dosage
Preferable flocculating effect can be shown, is subsequent sewage to improve the flocculation sediment efficiency of suspended matter in sanitary sewage
Treatment process reduces difficulty.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Specific embodiment is closed, the present invention is furture elucidated.
The preparation method of surfactant in following embodiment 1-3 includes：1mol/L hydrochloric acid is added in 1kg sodium metasilicate
Make its hydrolysis, control hydrochloric acid additive amount that its pH value be made to be 4,50mL hexamethyldisilazane is then added and makees (purchased from blue sub- chemical industry)
For organosilicon dressing agent, it is stirred 2h, adds 300mL sodium hydroxides, the stir process 3h at 60 DEG C, you can be used for
The surfactant of nano silicon dioxide.
Embodiment 1
A kind of preparation method of the sanitary sewage disposal composite flocculation agent based on petroleum coke：
(1) petroleum coke of 10kg is crushed to and crossed 40 mesh sieve, 0.20kg nanometers are then added into the petroleum coke powder of sieving
Silica is subsequently added into 70g surfactants, stirs to get mixture A；
(2) mixture A is added in grinder and grinds 4h, be subsequently added into 8L 98wt%H2SO4Solution is stirred
Then 40min is filtered, and be 6.5 by the pH value that filter residue is washed with deionized water to filtrate, then dries filter residue；And filter residue is roused
Enter in electric heating converter, be passed through nitrogen and protected, be first warming up to 600 DEG C with 5 DEG C/min, keep 5min, then with 10 DEG C/
The speed of min is warming up to 1480 DEG C, keeps the temperature 30min, is then cooled to 820 DEG C, is passed through the mixed gas of vapor and nitrogen,
The volume ratio that middle vapor accounts for nitrogen is 50%, and ventilate 40min, then benzene is passed through with nitrogen as carrier in electric heating converter, benzene
Volumetric concentration be 13%, after being passed through 40min, close electric heating converter heating, make its natural cooling, obtain powdered carbon；
(3) 0.5kg titanate coupling agents are added into 10kg aluminium-magnesium silicates, are warming up to 120 DEG C and insulated and stirred processing
Then 5kg hydrolysis of polymaleic anhydride and 5kg N- hydroxyethyl acrylamides is added in 30min, continue insulated and stirred 2h, stands simultaneously certainly
It is so cooled to room temperature, filters, it is 7.0 that filter residue, which is washed to filtrate pH, is then dried to constant weight at 60 DEG C, obtains modification
Aluminium-magnesium silicate；
(4) powdered carbon in 5kg steps (2) is taken, the aluminium-magnesium silicate of the modification in 2kg steps (3) is added, it is mixed in stirring
The mixed liquor that 0.5kg ethylene glycol diglycidylethers and 5kg ethyl alcohol are sprayed into during conjunction, after being uniformly mixed, will mix
Object is vacuum dried to constant weight, is then transferred in -20 DEG C of low temperature environment and freezes 4h, micro mist then is made through micronizer,
Up to the composite flocculation agent.
Embodiment 2
A kind of preparation method of the sanitary sewage disposal composite flocculation agent based on petroleum coke：
(1) 10kg petroleum cokes are crushed to and crossed 40 mesh sieve, 0.27kg nanometer titanium dioxides are added into the petroleum coke powder of sieving
Then silicon is added 80g surfactants, stirs to obtain mixture A；
(2) mixture A is added in grinder and grinds 3h, be subsequently added into 8L 98wt%H2SO4Solution is stirred
Then 30min is filtered, and be 7.0 by the pH value that filter residue is washed with deionized water to filtrate, then dries filter residue；；And filter residue is roused
Enter in electric heating converter, be passed through nitrogen and protected, be first warming up to 600 DEG C with 5 DEG C/min, keep 5min, then with 10 DEG C/
The speed of min is warming up to 1450 DEG C, keeps the temperature 30min, is then cooled to 850 DEG C, is passed through the mixed gas of vapor and nitrogen,
The volume ratio that middle vapor accounts for nitrogen is 60%, and ventilate 30min, then benzene is passed through with nitrogen as carrier in electric heating converter, benzene
Volumetric concentration be 12%, after being passed through 40min, close electric heating converter heating, make its natural cooling, obtain powdered carbon；
(3) 0.67kg titanate coupling agents are added into 10kg aluminium-magnesium silicates, are warming up to 120 DEG C and insulated and stirred processing
Then 6.7kg hydrolysis of polymaleic anhydride and 6.7kg N- hydroxyethyl acrylamides is added in 30min, continue 1~3h of insulated and stirred,
Stand and cooled to room temperature, filtering, it is 6.5~7.0 that filter residue, which is washed to filtrate pH, then at 50~60 DEG C it is dry extremely
Constant weight obtains the aluminium-magnesium silicate of modification；
(4) powdered carbon in 5kg steps (2) is taken, the aluminium-magnesium silicate of the modification in 1kg steps (3) is added, it is mixed in stirring
The mixed liquor that 0.6kg ethylene glycol diglycidylethers and 4kg ethyl alcohol are sprayed into during conjunction, after being uniformly mixed, will mix
Object is vacuum dried to constant weight, is then transferred in -20 DEG C of low temperature environment and freezes 5h, micro mist then is made through micronizer,
Up to the composite flocculation agent.
Embodiment 3
A kind of preparation method of the sanitary sewage disposal composite flocculation agent based on petroleum coke：
(1) 10kg petroleum cokes are crushed to and crossed 40 mesh sieve, 0.36kg nanometer titanium dioxides are added into the petroleum coke powder of sieving
Then silicon is added 144g surfactants, stirs to obtain mixture A；
(2) mixture A is added in grinder and grinds 5h, be subsequently added into 7.5L 98wt%H2SO4Solution is stirred
Then 30min is filtered, and be 7.0 by the pH value that filter residue is washed with deionized water to filtrate, then dries filter residue；And filter residue is roused
Enter in electric heating converter, be passed through nitrogen and protected, be first warming up to 600 DEG C with 5 DEG C/min, keep 5min, then with 10 DEG C/
The speed of min is warming up to 1450 DEG C, keeps the temperature 30min, is then cooled to 850 DEG C, is passed through the mixed gas of vapor and nitrogen,
The volume ratio that middle vapor accounts for nitrogen is 80%, and ventilate 20min, then benzene is passed through with nitrogen as carrier in electric heating converter, benzene
Volumetric concentration be 15%, after being passed through 40min, close electric heating converter heating, make its natural cooling, obtain powdered carbon；
(3) 0.8kg titanate coupling agents are added into 10kg aluminium-magnesium silicates, are warming up to 120 DEG C and insulated and stirred processing
Then 4kg hydrolysis of polymaleic anhydride and 4kg N- hydroxyethyl acrylamides is added in 30min, continue insulated and stirred 3h, stands simultaneously certainly
It is so cooled to room temperature, filters, it is 6.5 that filter residue, which is washed to filtrate pH, is then dried to constant weight at 50 DEG C, obtains modification
Aluminium-magnesium silicate；
(4) powdered carbon in 5kg steps (2) is taken, the aluminium-magnesium silicate of the modification in 1.5kg steps (3) is added, is stirring
The mixed liquor that 0.38kg ethylene glycol diglycidylethers and 2.5kg ethyl alcohol are sprayed into during mixing will after being uniformly mixed
Mixture is vacuum dried to constant weight, is then transferred in -20 DEG C of low temperature environment and freezes 4h, is then made through micronizer micro-
Powder is to get the composite flocculation agent.
It is utilized respectively the composite flocculation agent that above-described embodiment 1-3 is obtained to handle the sanitary sewage of same batch 1t, add
Add 10kg amounts, and with the aluminium polychloride of equivalent (being purchased from Xinhua of Henan Gongyi City chemical plant) as a control group 1, anion poly- third
Acrylamide (be purchased from Xinhua of Henan Gongyi City chemical plant) as a control group 2, cationic polyacrylamide it is (new purchased from Henan Gongyi City
Magnificent chemical plant) as a control group 3.
Wastewater suspended substance index before and after the above-mentioned flocculant process of sampling and testing, calculates flocculant and suspended matter is gone
Except rate and it is recorded in table 1.
Table 1：
| Removal efficiency (%) | |
| Embodiment 1 | 95.87 |
| Embodiment 2 | 94.59 |
| Embodiment 3 | 94.86 |
| Control group 1 | 83.46 |
| Control group 2 | 87.51 |
| Control group 3 | 89.25 |
Can be seen that composite flocculation agent provided by the invention in conjunction with upper table data has higher flocculating effect, can be efficiently
Removal sewage in suspended matter.
The basic principles and main features and the features of the present invention of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement is both fallen in the range of claimed invention.The scope of protection of present invention is by appended claims
And its equivalent thereof.
Claims (5)
1. a kind of preparation method of the sanitary sewage disposal composite flocculation agent based on petroleum coke, it is characterised in that：Including following
Step：
(1) petroleum coke is crushed to and crossed 40 mesh sieve, is then mixed with nano silicon dioxide, and nano silicon dioxide weight is added
The surfactant of 0.2~0.5 times of amount, stirs to obtain mixture A；
(2) mixture A is added in grinder and grinds 2~5h, be subsequently added into the oxidisability of 1.2~1.5 times of amounts of petroleum coke weight
Medium is stirred 30~40min, then filters, and it is 6.5~7.0 that filter residue, which is washed with deionized water to the pH value of filtrate, is connect
Dry filter residue, and filter residue is blasted in electric heating converter, 1400~1500 DEG C are warming up in atmosphere of inert gases and is carbonized
Processing, then reduces temperature, is passed through activator and carries out activation process, is finally passed through Carbon deposition reagent and carries out adjusting hole processing, waits locating
After the completion of reason, natural cooling obtains powdered carbon；
(3) titanate coupling agent is added into aluminium-magnesium silicate, is warming up to 100~140 DEG C and insulated and stirred handles 30~40min,
Then hydrolysis of polymaleic anhydride and N- hydroxyethyl acrylamides is added, continues 1~3h of insulated and stirred, stands and naturally cool to room
Temperature, filtering, it is 6.5~7.0 that filter residue, which is washed to filtrate pH, is then dried to constant weight at 50~60 DEG C, obtains modification
Aluminium-magnesium silicate；
(4) aluminium-magnesium silicate of modified processing in step (3) is added in the powdered carbon of step (2), during being stirred
The ethanol solution of ethylene glycol diglycidylether is sprayed into, it is after being uniformly mixed, mixture is vacuum dried to constant weight, then
It is transferred to 3~5h of freezing in -20 DEG C of low temperature environment, micro mist then is made to get the composite flocculation agent through micronizer.
2. the preparation method of the sanitary sewage disposal composite flocculation agent according to claim 1 based on petroleum coke, special
Sign is：Ash content≤1.0% of the petroleum coke, moisture≤5.0%, volatile matter≤15%, phosphorus content >=90%, the nanometer
The addition of silica accounts for 1~5% of phosphorus content in petroleum coke.
3. the preparation method of the sanitary sewage disposal composite flocculation agent according to claim 1 based on petroleum coke, special
Sign is：The preparation method of the surfactant includes that acidic materials are added in sodium metasilicate makes its hydrolysis, hydrolyzation system
PH value be 3~5, then be added organosilicon dressing agent, be stirred 1~3h, add strong alkaline substance, at 40~80 DEG C
2~5h of stir process is up to the surfactant for nano silicon dioxide.
4. the preparation method of the sanitary sewage disposal composite flocculation agent according to claim 1 based on petroleum coke, special
Sign is：In step (3), the aluminium-magnesium silicate, titanate coupling agent, hydrolysis of polymaleic anhydride and N- hydroxyethyl acrylamides
Mass ratio is (10~25)：(0.5~2)：(5~12)：(5~12).
5. the preparation method of the sanitary sewage disposal composite flocculation agent according to claim 1 based on petroleum coke, special
Sign is：In step (4), the powdered carbon, the aluminium-magnesium silicate of modified processing, ethylene glycol diglycidylether, ethyl alcohol quality
Than for (25~40)：(5~12)：(1~5)：(12~33).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109433481A (en) * | 2018-09-12 | 2019-03-08 | 安徽康瑞高科新材料技术工程有限公司 | A kind of paint slag processing method |
| CN111375417A (en) * | 2018-12-29 | 2020-07-07 | 中国石油化工股份有限公司 | Catalyst for preparing high-carbon alcohol by CO hydrogenation and preparation method thereof |
| CN114505051A (en) * | 2020-10-28 | 2022-05-17 | 中国石油化工股份有限公司 | Adsorbent for treating low-COD sewage and preparation method and application thereof |
-
2018
- 2018-02-11 CN CN201810141872.8A patent/CN108358293A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109433481A (en) * | 2018-09-12 | 2019-03-08 | 安徽康瑞高科新材料技术工程有限公司 | A kind of paint slag processing method |
| CN111375417A (en) * | 2018-12-29 | 2020-07-07 | 中国石油化工股份有限公司 | Catalyst for preparing high-carbon alcohol by CO hydrogenation and preparation method thereof |
| CN111375417B (en) * | 2018-12-29 | 2022-11-11 | 中国石油化工股份有限公司 | Catalyst for preparing high-carbon alcohol by CO hydrogenation and preparation method thereof |
| CN114505051A (en) * | 2020-10-28 | 2022-05-17 | 中国石油化工股份有限公司 | Adsorbent for treating low-COD sewage and preparation method and application thereof |
| CN114505051B (en) * | 2020-10-28 | 2023-09-01 | 中国石油化工股份有限公司 | Adsorbent for treating low COD sewage and preparation method and application thereof |
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Application publication date: 20180803 |