CN103724496A - Technology for synthesizing organic macromolecular flocculating agent based on control of monomer concentration - Google Patents
Technology for synthesizing organic macromolecular flocculating agent based on control of monomer concentration Download PDFInfo
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- CN103724496A CN103724496A CN201210414967.5A CN201210414967A CN103724496A CN 103724496 A CN103724496 A CN 103724496A CN 201210414967 A CN201210414967 A CN 201210414967A CN 103724496 A CN103724496 A CN 103724496A
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Abstract
The invention discloses a technology for synthesizing an organic macromolecular flocculating agent. The technology comprises the following steps: (a) measuring a certain quantity of polyacrylamide, formaldehyde, dimethylamine and hydrochloric acid for a standby purpose, wherein the polyacrylamide accounts for 20% of the total quantity in a percentage by mass; (b) putting the formaldehyde in a reaction container; (c), slowly adding the polyacrylamide and a catalyst into the reaction container, and agitating while adding; (d), then putting the reaction container in a water bath to be heated; (e), next, adding the dimethylamine into the reaction container; (f), cooling and then adding the hydrochloric acid to carry out quaterisation; (g), finally, evaporating, concentrating and filtering to obtain a target product. A qualified organic macromolecular flocculating agent can be successfully synthesized. The synthesizing technology has the advantages of simplicity, high synthesis conversion rate and convenience for manual operation. The synthesis cost of the organic macromolecular flocculating agent is greatly lowered, and the reaction efficiency and the performance of the product are further increased and improved through controlling monomer concentration in the synthesis process.
Description
Technical field
The present invention relates to a kind of organic polymer coargulator synthesis technique based on controlling monomer concentration.
Background technology
Flocculation agent totally can be divided into inorganic flocculating agent and organic floculant two classes according to its chemical composition.Wherein inorganic flocculating agent comprises again inorganic flocculant and inorganic polymer flocculant; Organic floculant comprises again Syn-Organic flocculants, natural organic high-molecular flocculant and microbial flocculant.
Organic polymer coargulator comes across the 1950's, and their application are had a bright future, and develop very fast.Water supply purifies, water/oil systems breakdown of emulsion, and oily(waste)water is processed, the aspects such as waste water renewable resources and sludge dewatering; Also can be used as the mud conditioner of oilfield development process, selective water shutoff agent, water filling thickening material, the softening agent of textile printing and dyeing process, antistatic agent and general sterilization, sterilizing agent etc.
Organic polymer coargulator has natural polymer and the large class of synthetic polymer two.Chemical structure, can be divided into following 3 types: (1) polyamine type-low molecular weight cationic type ionogen; (2) quaternary ammonium type-the change of molecular weight scope is large, and has higher cationic; (3) multipolymer-molecular weight of acrylamide is higher, can to millions of, several, necessarily all with the formulation of emulsus or powdery, sell by hundreds of thousands of, more inconvenient in use, but flocculating property is good.According to containing after different functional group's dissociations the charged situation of particle, can be divided into cationic, anionic, the large class of non-ionic type 3.In organic polymer coargulator macromole, can be with-COO-,-NH-,-SO
3,-the hydrophilic radicals such as OH, have the various structures such as chain, ring-type.Because its active group is many, molecular weight is high, has consumption few, and scum silica frost output is few, the features such as flocculation ability is strong, and flco is easily separated, and oil removing and oil removal are effective, in Refinery Wastewater, other trade effluent, in high suspended matter waste water and solid-liquid separation, cationic flocculant has purposes widely.Particularly acrylamide row organic polymer coargulator is high with its molecular weight, and flocculation bridge formation ability demonstrates by force the superiority in water treatment.
Flocculent precipitation is to select inorganic flocculating agent (as Tai-Ace S 150) and organic anion type flocculation agent Polyacrylamide (PAM) to be mixed with the aqueous solution to add in waste water, just can produce compression double electric layer, make the suspended particulates loss of stability in waste water, the mutual coagulation of micelle thing phase increases particulate, forms flocs unit, alumen ustum.Flocs unit is grown up and under action of gravity, depart from aqueous phase precipitation after certain volume, thereby removes a large amount of suspended substances in waste water, thereby reaches the effect of water treatment.For improving separating effect, can add in good time, in right amount coagulant aids.Sewage after processing be in colourity, substantially can reach emission standard containing aspects such as chromium, suspension content, can beyond row or the re-injection water that recovers the oil as man-made injection.
The molecular mass of flocculation agent, molecular structure and shape and with group, the activity of flocculation agent is had to impact.In general, molecular weight is larger, and flocculation activity is higher; Linear molecule flocculation activity is high, molecular band side chain or crosslinked more, and flocculence is poorer; Bacterium for producing flocculant is in late stage of culture, and cell surface vegetables water-based strengthens, and the flocculation agent activity of generation is also higher.Surface tissue and the electric charge of processing colloid ion in water body also have impact to flocculating effect.Some reports are pointed out, the positively charged ion in water body, particularly Ca
2+, Mg
2+existence can effectively reduce colloid surface negative charge, promote " bridges formation " formation.In addition, high density Ca
2+existence can also protect flocculation agent not to be subject to the effect of degrading enzyme.Microbial flocculant flocculation scope is wide, flocculation activity is high, and action condition is extensive, is scarcely subject to the impact of ionic strength, pH value and temperature, therefore can be widely used in sewage and Industrial Wastewater Treatment.The advantage that microbial flocculant is efficient, safe, free from environmental pollution, also has huge potential using value in fields such as medicine, food-processing, biological product separation.
Making a general survey of the present situation of flocculation agent can find out, flocculation agent various in style, and from low molecule to polymer, from single type to compound, total trend is the future development to cheap practical, non-toxic efficient.Inorganic flocculating agent low price, but can have a negative impact to human health and ecotope; Although organic polymer coargulator consumption is few, scum silica frost output is few, and flocculation ability is strong, flco is easily separated, oil removing and oil removal are effective, but the residual monomer of this class superpolymer has " three cause " effect (causing rugged, carcinogenic, mutagenesis), thereby its range of application is restricted; Microbial flocculant is because there not being secondary pollution, easy to use, and application prospect is tempting.Microbial flocculant may replace or partly replace in future traditional inorganic polymer and Syn-Organic flocculants.The development and application of microbial flocculant is in the ascendant, and a wide prospect has been shown in the development that its characteristic and advantage are water technology.
In the synthesis process of organic polymer coargulator, there is very large impact to the reaction efficiency of building-up process and product performance in monomer concentration, so, must determine a suitable monomer concentration.
Summary of the invention
The object of the invention is to overcome the shortcoming and defect of above-mentioned prior art, a kind of organic polymer coargulator synthesis technique based on controlling monomer concentration is provided, this synthesis technique can successfully synthesize qualified organic polymer coargulator, and synthesis technique is simple, Synthesis conversion is high, is convenient to workman's operation, greatly reduces the synthetic cost of organic polymer coargulator, and in building-up process, pass through to control monomer concentration, thereby further improve reaction efficiency and product performance.
Object of the present invention is achieved through the following technical solutions: a kind of organic polymer coargulator synthesis technique based on controlling monomer concentration, comprises the following steps:
(a) measure a certain amount of polyacrylamide, formaldehyde, dimethylamine, hydrochloric acid standby, according to mass percent meter, polyacrylamide accounts for 15%～25% of total amount;
(b) formaldehyde is placed in to reaction vessel;
(c) in reaction vessel, slowly add polyacrylamide and catalyzer, when adding, stir;
(d) then, reaction vessel being placed in to water-bath heats;
(e) then, in reaction vessel, add dimethylamine;
(f) cooling, then add hydrochloric acid quaternized, and control quaterisation temperature is 40 ℃～50 ℃;
(g) last, through evaporation concentration, filtration, obtain target product.
Described reaction vessel is beaker.
According to mass percent meter, polyacrylamide accounts for 20% of total amount.
According to mass percent meter, polyacrylamide accounts for 18% of total amount.
According to mass percent meter, polyacrylamide accounts for 23% of total amount.
In sum, the invention has the beneficial effects as follows: can successfully synthesize qualified organic polymer coargulator, and synthesis technique is simple, Synthesis conversion is high, be convenient to workman's operation, greatly reduce the synthetic cost of organic polymer coargulator, and in building-up process, pass through to control monomer concentration, thereby further improve reaction efficiency and product performance.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.
Embodiment 1:
The synthesis technique of a kind of organic polymer coargulator the present invention relates to, comprises the following steps:
(a) measure a certain amount of polyacrylamide, formaldehyde, dimethylamine, hydrochloric acid standby, according to mass percent meter, polyacrylamide accounts for 20% of total amount;
(b) formaldehyde is placed in to reaction vessel;
(c) in reaction vessel, slowly add polyacrylamide and catalyzer, when adding, stir;
(d) then, reaction vessel being placed in to water-bath heats;
(e) then, in reaction vessel, add dimethylamine;
(f) cooling, then add hydrochloric acid quaternized;
(g) last, through evaporation concentration, filtration, obtain target product.
Due in the synthesis process of organic polymer coargulator, on synthetic transformation efficiency and product performance, there is very large impact in monomer concentration, in order to obtain best monomer concentration, the present invention has done monomer concentration to synthetic reaction efficiency and the impact of product performance, result is known by experiment: along with the increase of monomer concentration, the reaction efficiency of building-up process is improved, but, when monomer concentration is increased to a certain degree, increase again monomer concentration, reaction efficiency can become, therefore should consider production cost and reaction efficiency.
To sum up, in the present embodiment, according to mass percent meter, polyacrylamide accounts for 20% of total amount.
Embodiment 2:
The difference of the present embodiment and embodiment 1 is only, in the present embodiment, according to mass percent meter, polyacrylamide accounts for 18% of total amount, and other parts of the present embodiment are identical with embodiment 1, repeat no more.
Embodiment 3:
The difference of the present embodiment and embodiment 1 is only, this enforcement, and according to mass percent meter, polyacrylamide accounts for 23% of total amount, and other parts of the present embodiment are identical with embodiment 1, repeat no more.
The above, be only preferred embodiment of the present invention, not the present invention done to any pro forma restriction, every foundation technical spirit of the present invention, and any simple modification, equivalent variations that above embodiment is done, within all falling into protection scope of the present invention.
Claims (5)
1. the organic polymer coargulator synthesis technique based on controlling monomer concentration, is characterized in that, comprises the following steps:
(a) measure a certain amount of polyacrylamide, formaldehyde, dimethylamine, hydrochloric acid standby, according to mass percent meter, polyacrylamide accounts for 15%～25% of total amount;
(b) formaldehyde is placed in to reaction vessel;
(c) in reaction vessel, slowly add polyacrylamide and catalyzer, when adding, stir;
(d) then, reaction vessel being placed in to water-bath heats;
(e) then, in reaction vessel, add dimethylamine;
(f) cooling, then add hydrochloric acid quaternized, and control quaterisation temperature is 40 ℃～50 ℃;
(g) last, through evaporation concentration, filtration, obtain target product.
2. the organic polymer coargulator synthesis technique based on controlling monomer concentration according to claim 1, is characterized in that, described reaction vessel is beaker.
3. the organic polymer coargulator synthesis technique based on controlling monomer concentration according to claim 1, is characterized in that, according to mass percent meter, polyacrylamide accounts for 20% of total amount.
4. the organic polymer coargulator synthesis technique based on controlling monomer concentration according to claim 1, is characterized in that, according to mass percent meter, polyacrylamide accounts for 18% of total amount.
5. the organic polymer coargulator synthesis technique based on controlling monomer concentration according to claim 1, is characterized in that, according to mass percent meter, polyacrylamide accounts for 23% of total amount.
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| CN201210414967.5A CN103724496A (en) | 2012-10-15 | 2012-10-15 | Technology for synthesizing organic macromolecular flocculating agent based on control of monomer concentration |
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| CN201210414967.5A CN103724496A (en) | 2012-10-15 | 2012-10-15 | Technology for synthesizing organic macromolecular flocculating agent based on control of monomer concentration |
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Application publication date: 20140416 |