Contains nano fe(oh) 3 Preparation method of grafted acrylamide copolymer flocculant

A technology of acrylamide copolymer and grafted acrylamide, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problem of high dosage of organic polymer flocculants, poor removal of soluble inorganic and organic pollutants, and aluminum residues. Quantity and COD Higher Issues

A technology of acrylamide copolymer and grafted acrylamide, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problem of high dosage of organic polymer flocculants, poor removal of soluble inorganic and organic pollutants, and aluminum residues. Quantity and COD Higher Issues

CN105218758BInactive Publication Date: 2017-09-29CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Contains nano fe(oh) <sub>3</sub> Preparation method of grafted acrylamide copolymer flocculant
  • Contains nano fe(oh) <sub>3</sub> Preparation method of grafted acrylamide copolymer flocculant

Examples

Experimental program
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Effect test

Embodiment 1

[0020] 10 g FeCl 3 Dissolve in ethylene glycol, prepare 100mL of a solution with a mass concentration of 100g / L, add 100mL of FeCl 3 Add the solution into a three-necked reaction flask, slowly add 95mL of ethylene glycol solution with a NaOH mass concentration of 40g / L while stirring, react for 3 hours under rapid stirring, the reaction temperature is 130°C, then cool to room temperature, and centrifuge the reaction product Separated and washed with deionized water to obtain nano-Fe(OH) 3 . Add 20 grams of acrylamide into a three-necked reaction flask, then add 175 grams of deionized water, stir to form a solution, add 1.250 grams of trimethylhexadecyl ammonium chloride and stir, add nano-Fe(OH) 3 0.980 grams, then add 9.760 grams of dimethyl diallyl ammonium chloride, 4-vinylbenzyl alkylphenol polyoxyethylene ether (the degree of polymerization of polyoxyethylene ether is 16) 1.310 grams, stir 30 minutes, adjust The pH value of the solution is 5.5, pass N under stirring 2...

Embodiment 2

[0022] 10 g FeCl 3 Dissolve in ethylene glycol, prepare 100mL of a solution with a mass concentration of 100g / L, add 100mL of FeCl 3 Add the solution into a three-necked reaction flask, slowly add 160mL of ethylene glycol solution with a NaOH mass concentration of 40g / L while stirring, react for 2.5 hours under rapid stirring, the reaction temperature is 145°C, then cool to room temperature, and centrifuge the reaction product Separated and washed with deionized water to obtain nano-Fe(OH) 3 . Add 20 grams of acrylamide into a three-necked reaction flask, then add 240 grams of deionized water, stir to make a solution, add 2.941 grams of trimethylhexadecyl ammonium chloride and stir, add nano-Fe(OH) 3 1.872 grams, then add 16.530 grams of ethyl acrylate trimethyl ammonium chloride, 2.861 grams of 4-vinylbenzyl alkylphenol polyoxyethylene ether (the degree of polymerization of polyoxyethylene ether is 40), stir for 30 minutes, adjust The pH value of the solution is 5, pass N ...

Embodiment 3

[0024] 10 g FeCl 3 Dissolve in ethylene glycol, prepare 100mL of a solution with a mass concentration of 100g / L, add 100mL of FeCl 3 Add the solution into a three-necked reaction flask, slowly add 210mL of ethylene glycol solution with a NaOH mass concentration of 40g / L while stirring, react for 4 hours under rapid stirring, the reaction temperature is 150°C, then cool to room temperature, and centrifuge the reaction product Separated and washed with deionized water to obtain nano-Fe(OH) 3 . Add 20 grams of acrylamide into the three-necked reaction flask, then add 330 grams of deionized water, stir to make a solution, add 4.260 grams of trimethylhexadecyl ammonium chloride and stir, add nano-Fe(OH) 3 4.503 grams, then add ethyl methacrylate trimethyl ammonium chloride 23.580 grams, 4-vinylbenzyl alkyl polyoxyethylene ether (the degree of polymerization of polyoxyethylene ether is 60) 4.724 grams, stir 30 minutes, Adjust the pH value of the solution to 6.0, pass N under stir...

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Abstract

The invention discloses a preparation method of a nano-Fe(OH)3-containing acrylamide-grafted copolymer flocculant. The method is characterized in that 100 mL of a 100 g / L FeCl3 ethylene glycol solution is added to a three-neck reaction flask, 90-300 ml of a 40 g / L NaOH ethylene glycol solution is slowly added in the stirring state, the mixture reacts at the reaction temperature of 120-160 DEG C for 2-4 h in the rapid stirring state and then the product after reaction is cooled to the room temperature, reaction products are centrifugally separated and washed with deionized water, and nano-Fe(OH)3 is prepared; 20 parts of acrylamide are added to the three-neck reaction flask, then 150-600 parts of deionized water and 1.0-12 parts of trimethyl hexadecyl ammonium chloride are added, the mixture is stirred, 0.5-8 parts of the nano-Fe(OH)3 are added in the stirring state, 8-40 parts of cationic monomers and 0.8-10 parts of macromonomers are added, the mixture is stirred for 30 min, the pH value is 5-8, N2 is introduced for 30 min, 0.02-0.6 parts of an initiator, namely, potassium persulfate, is added at the temperature of 50-75 DEG C, the mixture reacts for 8-24 h, and the nano-Fe(OH)3-containing acrylamide-grafted copolymer flocculant Fe(OH)3-PAMB with excellent coagulation performance is prepared.

Description

1. Technical field [0001] The present invention relates to a kind of nano Fe (OH) containing 3 The preparation method of grafted acrylamide copolymer flocculant, this flocculant can be used in oil and gas field fracturing flowback fluid, oil and gas field produced water, printing and dyeing, papermaking, textile, steel, brewing, petrochemical, metallurgy and food and other waste water It belongs to the fields of environmental engineering, inorganic chemistry, polymer materials and oil field chemistry. 2. Technical background [0002] With the development of my country's industrial and agricultural economy and the increase in the development of oil and gas resources, the total discharge of industrial and urban domestic wastewater is increasing year by year, resulting in serious waste of water resources. Therefore, how to reduce water treatment costs and improve wastewater treatment efficiency is a protection Water resources urgently need to be solved, and the development of e...

Claims

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Application Information

Patent Timeline
29 Sep 2017
Publication
CN105218758B
IPC
C08F283/06; C08F220/56; C08F226/02; C08F220/34; C08F220/60; C08F2/44; C02F1/56
Inventors
钟传蓉; 黄晶晶