CN104262676A - Method for recycling superfine polyacrylamide powder - Google Patents
Method for recycling superfine polyacrylamide powder Download PDFInfo
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- CN104262676A CN104262676A CN201410522713.4A CN201410522713A CN104262676A CN 104262676 A CN104262676 A CN 104262676A CN 201410522713 A CN201410522713 A CN 201410522713A CN 104262676 A CN104262676 A CN 104262676A
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- polyacrylamide
- ultrafine powder
- superfine
- powder
- fine powder
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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Abstract
The invention relates to a method for recycling superfine polyacrylamide powder. The method comprises the following steps: adding the recovered superfine polyacrylamide powder of which the mesh number is less than 100 into a hydrolyzer, adding 2 percent of sodium carbonate hydrolysis agent, hydrolyzing the superfine polyacrylamide powder for 3 hours at the temperature of 80 DEG C, and then taking materials out; adding the materials into a granulator, and adding a granulation dispersing agent to obtain granular materials; inputting the obtained granular materials into a drying machine, and drying the granular materials to obtain a product. The method has the benefits that the superfine polyacrylamide powder of which the mesh number is less than 100 can be only sold at a low price in the prior art; by virtue of the fine powder recycling method provided by the invention, the additional value of the fine powder is increased, the net profit per ton is 4000 RMB, the superfine polyacrylamide powder is successfully fed back to the hydrolyzer in batches, the conversion rate of the fine powder is as high as 99.16 percent, the product quality is not influenced, the granulation dispersing agent is not needed to be added, more fine powder cannot be additionally generated, and the method is suitable for industrial popularization.
Description
Technical field
The invention belongs to chemical technology field, particularly relate to a kind of method recycling polyacrylamide ultrafine powder.
Background technology
Polyacrylamide (PAM) is high molecular weight water soluble polymer, has good to fall resistive, is widely used in oil production.Polyacrylamide is in process of production because the shearing of tablets press can produce a large amount of fine particles; these fine particles in drying process due to the loss of moisture can become the air inducing of the superfine dried system of dust, dust-removal system separates, after adopting in this course, to carry out the technique of twice granulation particularly serious in hydrolysis.In addition, dried polyacrylamide in crushing process because the pipe friction of the rolloff of runner milling and induced draught system also can produce a large amount of fine powders.
Particle diameter when oil field uses polyacrylamide has strict control, must control at the above particle size content≤4-5% of 18 order, the following particle size content≤4-5% of 100 order.Major cause one is that fine powder exceeds standard and can affect the mobility of product, causes the ratio of oilfield injection station product injection rate and volume of water input inharmonious, has a strong impact on the mother liquid concentration at the poly-station of note, and it is unstable to cause noting poly-viscosity; Two is that in particle diameter, fine powder exceeds standard and can affect the dissolution process of product.This is because fine powder exceeds standard and can affect the dispersion of product in water in note collecting process, cause fine powder coalescent, agglomerate periphery is surrounded by water, and the inside is the infiltration that honeycomb structure affects water, thus affect the water-soluble speed of product, be exactly we usually said " flake ".Manufacturer of the prior art be generally in crushing process by being provided with 20 orders, 100 object riddles sort out packing and undersell, this Hui Shi producer profit is affected.
Summary of the invention
The object of this invention is to provide a kind of method recycling polyacrylamide ultrafine powder, improve the output capacity of finished product, the fine powder produced is obtained effectively recycle in production process.
For realizing above-mentioned goal of the invention, technical scheme of the present invention is as follows:
Recycle a method for polyacrylamide ultrafine powder, comprise the steps:
1, the polyacrylamide ultrafine powder of recovery is added in the hydrolyzer containing polyacrylamide colloid particle in proportion, then add sodium carbonate hydrolytic reagent, 80 DEG C of Water Under solutions 3 hours, take out material;
2, above-mentioned material is added tablets press, and add granulation dispersion agent, obtain granular material;
3, by granular material input drying machine obtained above, desired product is obtained through super-dry.
Further, in described step 1 particle diameter of polyacrylamide ultrafine powder for being less than 100 orders.
Further, in described step 1, the additional proportion of polyacrylamide ultrafine powder is the 0-6% of polyacrylamide colloid particle gross weight ratio.
Further, in described step 1, the additional proportion of sodium carbonate hydrolytic reagent is 2% of polyacrylamide colloid particle gross weight ratio.
The consumption not adding the material granulation dispersion agent after the hydrolysis of polyacrylamide ultrafine powder is 0.6%-0.75%, and the usage quantity adding the material granulation dispersion agent after polyacrylamide ultrafine powder is 0.65-0.72%; Do not add the material after the hydrolysis of polyacrylamide ultrafine powder after super-dry, dehumidification system fine powder quantum of output is 40kg-55kg/T, and add the material after polyacrylamide ultrafine powder after super-dry, dehumidification system fine powder quantum of output is 40kg-60kg/T; Do not add polyacrylamide ultrafine powder and be hydrolyzed dried material after pulverizing, crushing system fine powder quantum of output is 20kg-30kg/T, and add the material after polyacrylamide ultrafine powder after pulverizing, crushing system fine powder quantum of output is 23kg-32kg/T; Not adding polyacrylamide ultrafine powder hydrolysis sampling Detection viscosity is 71.0Cp-72.5Cp, and degree of hydrolysis is 26.9%-28.1%, and adding polyacrylamide ultrafine powder hydrolysis sampling Detection viscosity is 70.5Cp-73.0Cp, and degree of hydrolysis is 27.2%-28.3%.After explanation adds polyacrylamide ultrafine powder, do not need the consumption additionally increasing granulation dispersion agent, additionally can not increase the quantum of output of fine powder yet, can not have an impact to the hydrolysis of polyacrylamide colloid particle yet.
The advantage that the present invention has and positively effect are: be less than 100 object polyacrylamide ultrafine powder and originally can only undersell, the invention provides the method that thin powder recovery utilizes, add the added value of fine powder, per tonly realize net profit 0.4 ten thousand, polyacrylamide ultrafine powder is successful backing up hydrolyzer in batches, and fine powder transformation efficiency is 99.16%, high conversion and do not affect quality product, do not need additionally to increase granulation dispersion agent, can not additionally produce more fine powders, be applicable to commercial introduction.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, but do not limit protection scope of the present invention.
Embodiment 1
The colloidal solid that 100g acrylamide content is 23% is added in hydrolyzer; the content adding polyacrylamide ultrafine powder is 0; add the sodium carbonate of 2% again as hydrolytic reagent; 3 hours are hydrolyzed at 80 DEG C; take out material and add tablets press; and add granulation dispersion agent; obtain granular material, this granular material is placed in baking oven inner drying, weighs after drying; weight 27.185g; solid content: 89.2%, yield is: 96.99%, viscosity: 71.0Cp; degree of hydrolysis: 27%, water-insoluble: 0.15%.
Embodiment 2
The colloidal solid that 100g acrylamide content is 23% is added in hydrolyzer; the content adding polyacrylamide ultrafine powder is 2%; add the sodium carbonate of 2% again as hydrolytic reagent; 3 hours are hydrolyzed at 80 DEG C; take out material and add tablets press; and add granulation dispersion agent; obtain granular material, this granular material is placed in baking oven inner drying, weighs after drying; weight 29.595g; solid content: 88.5%, yield is: 97.01%, viscosity: 71.8Cp; degree of hydrolysis: 27.5%, water-insoluble: 0.13%.
Embodiment 3
The colloidal solid that 100g acrylamide content is 23% is added in hydrolyzer; the content adding polyacrylamide ultrafine powder is 3%; add the sodium carbonate of 2% again as hydrolytic reagent; 3 hours are hydrolyzed at 80 DEG C; take out material and add tablets press; and add granulation dispersion agent; obtain granular material, this granular material is placed in baking oven inner drying, weighs after drying; weight 30.509g; solid content: 89.0%, yield is: 96.98%, viscosity: 72.0Cp; degree of hydrolysis: 27.2%, water-insoluble: 0.15%.
Embodiment 4
The colloidal solid that 100g acrylamide content is 23% is added in hydrolyzer; the content adding polyacrylamide ultrafine powder is 4%; add the sodium carbonate of 2% again as hydrolytic reagent; 3 hours are hydrolyzed at 80 DEG C; take out material and add tablets press; and add granulation dispersion agent; obtain granular material, this granular material is placed in baking oven inner drying, weighs after drying; weight 31.18g; solid content: 90.2%, yield is: 96.98%, viscosity: 70.5Cp; degree of hydrolysis: 26.9%, water-insoluble: 0.16%.
Embodiment 5
The colloidal solid that 100g acrylamide content is 23% is added in hydrolyzer; the content adding polyacrylamide ultrafine powder is 5%; add the sodium carbonate of 2% again as hydrolytic reagent; 3 hours are hydrolyzed at 80 DEG C; take out material and add tablets press; and add granulation dispersion agent; obtain granular material, this granular material is placed in baking oven inner drying, weighs after drying; weight 32.8136g; solid content: 88.7%, yield is: 97.02%, viscosity: 69.0Cp; degree of hydrolysis: 28.1%, water-insoluble: 0.10%.
Embodiment 6
The colloidal solid that 100g acrylamide content is 23% is added in hydrolyzer; the content adding polyacrylamide ultrafine powder is 6%; add the sodium carbonate of 2% again as hydrolytic reagent; 3 hours are hydrolyzed at 80 DEG C; take out material and add tablets press; and add granulation dispersion agent; obtain granular material, this granular material is placed in baking oven inner drying, weighs after drying; weight 33.636g; solid content: 89.5%, yield is: 97.11%, viscosity: 70.0Cp; degree of hydrolysis: 27.7%, water-insoluble: 0.13%.
Above embodiments of the invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (4)
1. recycle a method for polyacrylamide ultrafine powder, comprise the steps:
(1) the polyacrylamide ultrafine powder of recovery is added in the hydrolyzer containing polyacrylamide colloid particle in proportion, then add sodium carbonate hydrolytic reagent, 80 DEG C of Water Under solutions 3 hours, take out material;
(2) above-mentioned material is added tablets press, and add granulation dispersion agent, obtain granular material;
(3) by granular material input drying machine obtained above, desired product is obtained through super-dry.
2. a kind of method recycling polyacrylamide ultrafine powder according to claim 1, is characterized in that: in described step (1), the particle diameter of polyacrylamide ultrafine powder is for being less than 100 orders.
3. a kind of method recycling polyacrylamide ultrafine powder according to claim 1, is characterized in that: in described step (1), the additional proportion of polyacrylamide ultrafine powder is the 0-6% of polyacrylamide colloid particle gross weight ratio.
4. a kind of method recycling polyacrylamide ultrafine powder according to claim 1, is characterized in that: in described step (1), the additional proportion of sodium carbonate hydrolytic reagent is 2% of polyacrylamide colloid particle gross weight ratio.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410522713.4A CN104262676B (en) | 2014-09-30 | 2014-09-30 | A kind of method recycling polyacrylamide superfines |
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| CN201410522713.4A CN104262676B (en) | 2014-09-30 | 2014-09-30 | A kind of method recycling polyacrylamide superfines |
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| CN104262676A true CN104262676A (en) | 2015-01-07 |
| CN104262676B CN104262676B (en) | 2016-10-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111976057A (en) * | 2020-07-27 | 2020-11-24 | 甘肃中科聚合石油科技有限公司 | Polyacrylamide suspending agent granulation recovery unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057059A (en) * | 1990-06-04 | 1991-12-18 | 中国科学院长春应用化学研究所 | The preparation of high molecular anion type polycrylamide |
| JPH0959855A (en) * | 1995-08-11 | 1997-03-04 | Nippon Mayer Kk | Track plate for guiding spindle in torsion lace machine |
| CN1168894A (en) * | 1996-06-06 | 1997-12-31 | 山东工业大学 | Method for preparing high molecular wt. anionic polyacrylamide |
| CN1240799A (en) * | 1998-07-06 | 2000-01-12 | 中国石油天然气总公司石油勘探开发科学研究院 | Process for preparing powder-type partially hydrolytic polyacrylamide |
| CN101649022A (en) * | 2009-07-01 | 2010-02-17 | 山东宝莫生物化工股份有限公司 | Preparing method of lowering residual monomer content of ultra high molecular weight anion-type polyacrylamide |
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2014
- 2014-09-30 CN CN201410522713.4A patent/CN104262676B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057059A (en) * | 1990-06-04 | 1991-12-18 | 中国科学院长春应用化学研究所 | The preparation of high molecular anion type polycrylamide |
| JPH0959855A (en) * | 1995-08-11 | 1997-03-04 | Nippon Mayer Kk | Track plate for guiding spindle in torsion lace machine |
| CN1168894A (en) * | 1996-06-06 | 1997-12-31 | 山东工业大学 | Method for preparing high molecular wt. anionic polyacrylamide |
| CN1240799A (en) * | 1998-07-06 | 2000-01-12 | 中国石油天然气总公司石油勘探开发科学研究院 | Process for preparing powder-type partially hydrolytic polyacrylamide |
| CN101649022A (en) * | 2009-07-01 | 2010-02-17 | 山东宝莫生物化工股份有限公司 | Preparing method of lowering residual monomer content of ultra high molecular weight anion-type polyacrylamide |
Non-Patent Citations (1)
| Title |
|---|
| 张斌: "聚丙烯酰胺装置细粉回掺搅拌器的故障分析及排除措施探讨", 《科技与企业》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111976057A (en) * | 2020-07-27 | 2020-11-24 | 甘肃中科聚合石油科技有限公司 | Polyacrylamide suspending agent granulation recovery unit |
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