CN110948732A - Method for quickly carrying out ball-piling reaction on polyacrylamide in aqueous solution - Google Patents
Method for quickly carrying out ball-piling reaction on polyacrylamide in aqueous solution Download PDFInfo
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- CN110948732A CN110948732A CN201911099524.XA CN201911099524A CN110948732A CN 110948732 A CN110948732 A CN 110948732A CN 201911099524 A CN201911099524 A CN 201911099524A CN 110948732 A CN110948732 A CN 110948732A
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- polyacrylamide
- aqueous solution
- reaction
- reaction vessel
- balling
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 63
- 229920002401 polyacrylamide Polymers 0.000 title claims abstract description 53
- 239000007864 aqueous solution Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000009471 action Effects 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 239000007789 gas Substances 0.000 claims description 29
- 239000007788 liquid Substances 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 230000002572 peristaltic effect Effects 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 abstract description 22
- 230000000694 effects Effects 0.000 abstract description 12
- 239000013043 chemical agent Substances 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 125000004442 acylamino group Chemical group 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/08—Making granules by agglomerating smaller particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
- B29K2033/26—Polymers of acrylamide or methacrylamide
Abstract
The invention discloses a method for quickly carrying out a ball-piling reaction on polyacrylamide in an aqueous solution, which comprises the following steps: placing a polyacrylamide aqueous solution in a reaction vessel; connecting an ultrasonic generator and a rod-type ultrasonic transducer, and immersing the rod-type ultrasonic transducer in the polyacrylamide aqueous solution in the reaction vessel; and starting the ultrasonic generator, and stacking the polyacrylamide in the aqueous solution into balls under the action of ultrasonic waves. According to the technical scheme, the rod type ultrasonic transducer is adopted to release ultrasonic waves into the polyacrylamide solution of the reaction container, the cutting effect in a small range is realized, the polyacrylamide balling speed is high, the balling effect is good and stable, and the problem that the plate type ultrasonic transducer and the groove type ultrasonic transducer are quickly cut up again to form a large ball after forming a piled ball is avoided. The technical scheme does not introduce chemical agents, has low treatment cost and does not have the possibility of secondary pollution.
Description
Technical Field
The invention is used in the field of water treatment, and particularly relates to a rapid ball-piling reaction method for polyacrylamide in an aqueous solution.
Background
Polyacrylamide is called as 'all-industry auxiliary agent', and the structural unit of the polyacrylamide contains acylamino, so that the polyacrylamide has good water solubility and can be widely applied to industries such as oil exploitation, water treatment, medical treatment, textile, coating, agricultural soil, papermaking, food, mine, metallurgy and the like. The polyacrylamide is divided into four types of anion, cation, nonionic and zwitterionic types according to the ionic characteristics, and the application fields of different types of polyacrylamide are distinguished. However, whatever the type of polyacrylamide, its morphology in aqueous solution strongly affects its application properties. If the spatial morphology of the polyacrylamide-containing sewage can be controlled before the sewage is treated, a corresponding treatment method can be pertinently adopted to improve the sewage treatment efficiency. At present, no method for repeatedly controlling the appearance of polyacrylamide in a water body without introducing a chemical agent is disclosed and reported.
Disclosure of Invention
The invention aims to solve at least one of the technical problems in the prior art, and provides a method for quickly piling polyacrylamide in an aqueous solution, which can realize the quick piling reaction of polyacrylamide without introducing a chemical agent, greatly improves the balling speed and has good effect.
The technical scheme adopted by the invention for solving the technical problems is as follows: a rapid heap ball reaction method for polyacrylamide in an aqueous solution comprises the following steps:
placing a polyacrylamide aqueous solution in a reaction vessel;
connecting an ultrasonic generator and a rod-type ultrasonic transducer, and immersing the rod-type ultrasonic transducer in the polyacrylamide aqueous solution in the reaction vessel;
and starting the ultrasonic generator, and stacking the polyacrylamide in the aqueous solution into balls under the action of ultrasonic waves.
Preferably, the reaction vessel is connected with a circulation pipeline, a gas source is connected into the circulation pipeline through a gas-liquid slug flow forced mixing pipe, a circulation pump pumps the aqueous solution in the reaction vessel to flow along the circulation pipeline, and an air inlet valve of the gas source is opened to enable the gas to be mixed into the aqueous solution through the gas-liquid slug flow forced mixing pipe.
Preferably, the gas of the gas source is oxygen or nitrogen.
Preferably, at least part of the circulation line is immersed in a water bath tank.
Preferably, the aqueous solution in the reaction vessel is heated using a water bath.
Preferably, reaction vessel adopts closed reaction jacket cup, closed reaction jacket cup includes interior cup and outer cup, outer cup cover is in outside interior cup, form the water jacket between interior cup and the outer cup, the water jacket has constant temperature water import and constant temperature water export, reaction vessel's top rim of a cup is equipped with detachable cup stopper, rod-type ultrasonic transducer passes the cup stopper cartridge is in reaction vessel.
Preferably, the circulating pump adopts a peristaltic pump.
One of the above technical solutions has at least one of the following advantages or beneficial effects: according to the technical scheme, the rod type ultrasonic transducer is adopted to release ultrasonic waves into the polyacrylamide solution of the reaction container, the cutting effect in a small range is realized, the polyacrylamide balling speed is high, the balling effect is good and stable, and the problem that the plate type ultrasonic transducer and the groove type ultrasonic transducer are quickly cut up again to form a large ball after forming a piled ball is avoided. The technical scheme does not introduce chemical agents, has low treatment cost and does not have the possibility of secondary pollution.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural view of a reaction apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view showing the structure of a reaction vessel of the reaction apparatus according to the embodiment shown in FIG. 1;
FIG. 3 is a microscopic structure diagram of an ultrasonic stack ball 5min later according to an embodiment of the present invention;
FIG. 4 is a microscopic structure diagram of the ultrasonic reactor ball after 8min in the embodiment of the present invention;
FIG. 5 is a microscopic structure diagram of the ultrasonic reactor ball after 12min in the embodiment of the invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the present invention, if directions (up, down, left, right, front, and rear) are described, it is only for convenience of describing the technical solution of the present invention, and it is not intended or implied that the technical features referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, it is not to be construed as limiting the present invention.
In the invention, the meaning of "a plurality" is one or more, the meaning of "a plurality" is more than two, and the terms of "more than", "less than", "more than" and the like are understood to exclude the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the present invention, unless otherwise specifically limited, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.
Referring to fig. 1, an embodiment of the present invention provides a device for rapid polyacrylamide ball reactor reaction in aqueous solution, comprising a reaction vessel 1, an ultrasonic generator 2 and a rod-type ultrasonic transducer 3, wherein the ultrasonic generator 2 is connected with the rod-type ultrasonic transducer 3, and the rod-type ultrasonic transducer 3 is inserted into the reaction vessel 1. When the reaction device is used for processing the polyacrylamide solution, the polyacrylamide solution is placed in the reaction container 1, and the ultrasonic generator 2 releases ultrasonic waves into the polyacrylamide solution through the rod type ultrasonic transducer 3 to continuously ball the polyacrylamide.
The outer side of the reaction vessel 1 is provided with a water jacket which is provided with a constant temperature water inlet 11 and a constant temperature water outlet 12, when the ball stacking treatment is carried out, constant temperature water flows in through the constant temperature water inlet 11 and flows out through the constant temperature water outlet 12, the polyacrylamide solution is ensured to be at a constant temperature, for example, the constant temperature is about 30 ℃, so that the ball forming speed is accelerated, and the ball forming stability is improved.
Referring to fig. 2, the reaction vessel 1 comprises an inner cup body 13 and an outer cup body 14, the outer cup body 14 is sleeved outside the inner cup body 13, a water jacket is formed between the inner cup body 13 and the outer cup body 14, a detachable cup plug 15 is arranged at the top cup opening of the reaction vessel 1, and the reaction vessel 1 is closed to ensure that liquid cannot spill out in the process. The rod-type ultrasonic transducer 3 is inserted into the reaction vessel 1 through the cup plug 15. The reaction vessel 1 has lower cost and simple and convenient operation.
Referring to fig. 1, a reaction vessel 1 is connected with a circulation pipeline 4, a circulation pump 5 is arranged on the circulation pipeline 4, the circulation pump 5 can adopt a peristaltic pump, and the reaction vessel further comprises a gas source, wherein the gas source is connected into the circulation pipeline 4 through a gas-liquid slug flow forced mixing pipe 6 so as to mix the solution with the introduced gas and enhance the ultrasonic cavitation effect.
Wherein the gas source comprises an oxygen tank 71 and/or a nitrogen tank 72, and is provided with an air inlet valve 73 and a gas flow meter 74 to accurately control the amount of gas injected into the solution.
Referring to fig. 1, a water bath tank 8 is further included, and at least a portion of the circulation line 4 is immersed in the water bath tank 8. The solution in the circulating pipeline 4 is heated by the water bath tank 8, and the solution is kept at a specific temperature, so that the balling speed and the balling effect of the polyacrylamide are accelerated.
Referring to fig. 1, the reactor further comprises a lifting platform 9, the reactor 1 is arranged on the lifting platform, and the height of the reactor 1 is adjusted by the lifting platform 9.
Referring to fig. 1, an embodiment of the present invention further provides a method for rapid pilling of polyacrylamide in an aqueous solution, including the following steps:
placing a polyacrylamide aqueous solution in a reaction vessel;
connecting an ultrasonic generator with a rod-type ultrasonic transducer, and soaking the rod-type ultrasonic transducer in a polyacrylamide aqueous solution in a reaction container;
starting the ultrasonic generator, and stacking polyacrylamide in the aqueous solution into balls under the action of ultrasonic waves.
The reaction method adopts the rod-type ultrasonic transducer 3 to release ultrasonic waves into the polyacrylamide solution of the reaction container 1, realizes the cutting action in a small range, has high polyacrylamide balling speed and good and stable balling effect, and avoids the problem that the plate-type ultrasonic transducer and the groove-type ultrasonic transducer are quickly cut again to form large balls after forming piled balls. The technical scheme does not introduce chemical agents, has low treatment cost and does not have the possibility of secondary pollution.
Referring to fig. 1, in some embodiments, during the polyacrylamide ball-stacking reaction, the reaction vessel is connected to a circulation pipeline, a gas source is connected to the circulation pipeline through a gas-liquid slug flow intensive mixing pipe, the circulation pump pumps the aqueous solution in the reaction vessel to flow along the circulation pipeline, and an air inlet valve of the gas source is opened to mix the gas into the aqueous solution through the gas-liquid slug flow intensive mixing pipe. The gas source connects the gas into the circulating pipeline 4 through the gas-liquid slug flow strong mixing pipe 6 and mixes the gas with the solution in the circulating pipeline 4, the gas source mixes the gas into the solution, and the gas forms tiny bubbles in the solution. Then the solution flows into the reaction container 1, the rod-type ultrasonic transducer 3 emits ultrasonic waves into the reaction container 1, and the movement direction and the vibration direction of the ultrasonic waves are consistent in the process of propagating in water to form dilatational waves. When the sound pressure amplitude of the negative pressure half period formed by the sparse wave exceeds the internal static pressure of the liquid, the tiny bubbles (called 'cavitation nuclei') existing in the liquid are rapidly increased. In the sound wave positive pressure phase which is obtained successively, the bubbles are instantaneously collapsed, the theoretical pressure value of a tiny extreme environment formed by collapse can reach dozens of megapascals, the temperature can reach hundreds of degrees centigrade, and the carbon-carbon bond of the organic matter can be broken to realize the degradation. The solution in the reaction container 1 is driven by a circulating pump 5 to circulate continuously, and the action is repeatedly carried out in the circulating solution, so that the continuous, sufficient and uniform degradation of polyacrylamide in the solution into balls is realized.
Wherein, the gas of the gas source is oxygen or nitrogen. The air outlet speed of the air source is controlled to be about 300ml/min through the air inlet valve. The peristaltic pump is adopted as the circulating pump, the speed of the peristaltic pump is 100r/min, and in the embodiment, the mixing ratio of the gas in the water solution is better, and the ultrasonic cavitation effect is better.
In some embodiments, referring to fig. 1, at least part of the circulation line is immersed in a water bath tank to keep the aqueous solution at a constant temperature, for example, at 30 ℃.
In some embodiments, the aqueous solution in the reaction vessel is heated with a water bath to maintain the aqueous solution at a constant temperature, for example, at 30 ℃ prior to the ultrasonic reactor bulb reaction.
The reaction method greatly improves the balling speed of the polyacrylamide and has good balling effect.
In order to better understand the technical scheme of the invention, the invention is further illustrated by the following examples, but the invention is not limited to the following examples.
(1) The non-ionic polyacrylamide with the molecular weight of 1000 ten thousand is used for preparing the aqueous solution with the concentration of 1000 mg/L.
(2) Connecting an ultrasonic generator and a rod type ultrasonic transducer, adding a certain amount of water into a water bath tank, starting an instrument heating power supply, and controlling the temperature of a constant-temperature water bath to be 30 ℃ and keeping the temperature constant;
(3) regulating the speed of the peristaltic pump to be 100r/min, the ultrasonic time of the ultrasonic generator to be 8min and the gas inlet and outlet speed to be about 300 ml/min;
(4) connecting a reaction container filled with 200ml of polyacrylamide aqueous solution with an upper rod type ultrasonic transducer;
(5) after the position of the reaction container is adjusted, starting a peristaltic pump, and opening an air inlet valve of an air source and an ultrasonic generator;
(6) after the ultrasonic time is 5min, 8mi and 12min, the ultrasonic generator, the air inlet valve and the peristaltic pump are closed;
(7) the closed reaction vessel was disassembled, the sample solution was taken out, and the microstructure was observed and photographed.
(8) As can be seen from the comparison of the ball stacking effects of fig. 3, 4 and 5, the effect of fig. 4 is the best, i.e., the optimal ultrasonic ball stacking time of the present embodiment is 8min, which is greatly increased compared to the ball stacking time of the previous ball stacking method.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (7)
1. A rapid heap ball reaction method for polyacrylamide in an aqueous solution is characterized by comprising the following steps:
placing a polyacrylamide aqueous solution in a reaction vessel;
connecting an ultrasonic generator and a rod-type ultrasonic transducer, and immersing the rod-type ultrasonic transducer in the polyacrylamide aqueous solution in the reaction vessel;
and starting the ultrasonic generator, and stacking the polyacrylamide in the aqueous solution into balls under the action of ultrasonic waves.
2. The method for rapid heap balling of polyacrylamide in aqueous solution as claimed in claim 1 wherein: connecting the reaction container with a circulating pipeline, connecting a gas source into the circulating pipeline through a gas-liquid slug flow strong mixing pipe, pumping the aqueous solution in the reaction container by a circulating pump to flow along the circulating pipeline, and opening an air inlet valve of the gas source to enable the gas to be mixed into the aqueous solution through the gas-liquid slug flow strong mixing pipe.
3. The method for rapid heap balling of polyacrylamide in aqueous solution as claimed in claim 2 wherein: the gas of the gas source is oxygen or nitrogen.
4. The method for rapid heap balling of polyacrylamide in aqueous solution as claimed in claim 2 wherein: immersing at least a portion of the circulation line in a water bath tank.
5. The method for rapid heap balling of polyacrylamide in aqueous solution as claimed in claim 1 wherein: the aqueous solution in the reaction vessel was heated using a water bath.
6. The method for rapid heap balling of polyacrylamide in aqueous solution as claimed in claim 5 wherein: the reaction vessel adopts a closed reaction jacket cup, the closed reaction jacket cup comprises an inner cup body and an outer cup body, the outer cup body is sleeved outside the inner cup body, a water jacket is formed between the inner cup body and the outer cup body, the water jacket is provided with a constant-temperature water inlet and a constant-temperature water outlet, a detachable cup plug is arranged at the top cup opening of the reaction vessel, and the rod type ultrasonic transducer penetrates through the cup plug and is inserted in the reaction vessel.
7. The method for rapid heap balling of polyacrylamide in aqueous solution as claimed in claim 2 wherein: the circulating pump adopts a peristaltic pump.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911099524.XA CN110948732B (en) | 2019-11-12 | 2019-11-12 | Method for quickly carrying out ball-piling reaction on polyacrylamide in aqueous solution |
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| CN201911099524.XA CN110948732B (en) | 2019-11-12 | 2019-11-12 | Method for quickly carrying out ball-piling reaction on polyacrylamide in aqueous solution |
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| CN110948732A true CN110948732A (en) | 2020-04-03 |
| CN110948732B CN110948732B (en) | 2021-06-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111659482A (en) * | 2020-06-11 | 2020-09-15 | 南昌航空大学 | Device for quickly and accurately controlling temperature of quartz microbalance flow cell and construction method thereof |
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| CN205076858U (en) * | 2015-09-18 | 2016-03-09 | 中国石油化工股份有限公司 | Polyacrylamide equipment among magnetic field, ultrasonic wave and laser processing oilfield produced liquid |
| CN107674165A (en) * | 2017-11-06 | 2018-02-09 | 重庆大学 | A kind of method for triggering matrix polymerization method synthesizing cationic polyacrylamide using ultrasonic wave |
| CN108249539A (en) * | 2018-01-03 | 2018-07-06 | 广东石油化工学院 | PAM molecules spherical shape and net form accumulation body pattern controllable method repeatedly in a kind of aqueous solution |
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2019
- 2019-11-12 CN CN201911099524.XA patent/CN110948732B/en active Active
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|---|---|---|---|---|
| CN205076858U (en) * | 2015-09-18 | 2016-03-09 | 中国石油化工股份有限公司 | Polyacrylamide equipment among magnetic field, ultrasonic wave and laser processing oilfield produced liquid |
| CN107674165A (en) * | 2017-11-06 | 2018-02-09 | 重庆大学 | A kind of method for triggering matrix polymerization method synthesizing cationic polyacrylamide using ultrasonic wave |
| CN108249539A (en) * | 2018-01-03 | 2018-07-06 | 广东石油化工学院 | PAM molecules spherical shape and net form accumulation body pattern controllable method repeatedly in a kind of aqueous solution |
Non-Patent Citations (1)
| Title |
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| 刘春: "《机械工程测试技术》", 31 August 2006, 北京理工大学出版社 * |
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| CN111659482A (en) * | 2020-06-11 | 2020-09-15 | 南昌航空大学 | Device for quickly and accurately controlling temperature of quartz microbalance flow cell and construction method thereof |
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