CN202989036U - Polyacrylamide reaction kettle with anticorrosive non-stick coating on inner wall thereof - Google Patents
Polyacrylamide reaction kettle with anticorrosive non-stick coating on inner wall thereof Download PDFInfo
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- CN202989036U CN202989036U CN 201220733591 CN201220733591U CN202989036U CN 202989036 U CN202989036 U CN 202989036U CN 201220733591 CN201220733591 CN 201220733591 CN 201220733591 U CN201220733591 U CN 201220733591U CN 202989036 U CN202989036 U CN 202989036U
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Abstract
The utility model discloses a polyacrylamide reaction kettle with an anticorrosive non-stick coating on the inner wall thereof, which relates to a polyacrylamide reaction kettle, and specifically relates to a polyacrylamide reaction kettle with an anticorrosive non-stick coating on the inner wall thereof. The polyacrylamide reaction kettle is designed for solving the problem that a coating on the inner wall of the existing reaction kettle for producing polyacrylamide is single, poor in adaptability, and weak in corrosion resistance, especially 'caustic embrittlement' corrosion resistance, especially for a reaction kettle taking carbon steel for a post alkali adding process as a base material, once a coating is damaged, the carbon steel produces a degradation reaction to reacted polyacrylamide gel, thereby affecting the reaction quality, and on the other hand, when the coating on the inner wall of the reaction kettle is damaged, if enamel and teflon coatings are desired to be sprayed on the inner wall, the whole reaction kettle must be carried back to manufacturers to re-sinter, thereby causing the suspend production of the manufacturers and the heavy losses of money. The polyacrylamide reaction kettle disclosed by the utility model comprises a reaction vessel, and the inner wall of the reaction vessel is sequentially coated with an NGML metal composite coating and an FTB fluorine resin modified ceramic non-stick coating. The polyacrylamide reaction kettle disclosed by the utility model is used for carrying out polyacrylamide reaction.
Description
Technical field
The utility model relates to a kind of polyacrylamide reactor, is specifically related to a kind of inwall with the polyacrylamide reactor of anticorrosion non-sticky metallic coating.
Background technology
at present, the technique of producing the polyacrylamide employing mainly contains two kinds: front alkali and the rear alkali addition process of adding, after add the polyacrylamide colloid of alkali reaction, viscosity is very high, processing condition are: temperature 40-50 degree, pH value 5.8-6.2, therefore, require the reactor coating to have: 1, fabulous not viscosity energy, 2, the reactor base material can not produce DeR with polyacrylamide, carbon steel meeting and polyacrylamide produce DeR, as use carbon steel to do the reactor base material, requiredly add the organic or inorganic non-sticky metallic coating at steel surface, as use stainless steel to do the reactor base material, although stainless steel and polyacrylamide do not produce DeR, but the viscosity of polyacrylamide colloid is very high, also must add the organic or inorganic non-sticky metallic coating.At present, the reactor inside coating has roasting enamel, pottery; The spray polytetrafluoro, wherein the sticking characteristic of polytetrafluoro is best, but it equally with enamel all needs strict high-sintering process, when wanting again making coatings, reactor integral body must be transported back producer's sintering again, can make like this enterprise's stopping production, and then cause a large amount of losses.
add alkali cohydrolysis polymerization technique before producing polyacrylamide, reactor content is by the sodium carbonate of the acrylamide 4-5% of 24-25%, 70% water, add a small amount of sodium hydroxide, adjust pH value to 12.5-13, temperature of reaction is about 120 degree, before add the most of stainless steel that adopts of reaction vessel material that alkali is produced polyacrylamide, polymerization under these processing condition, hydrolysis is carried out in same reaction vessel, after reaction is completed, by 4 kilograms of pressure, the polyacrylamide colloid that is reacted into is released from the discharge port of bottom, can be stretched near the discharging sky when colloid is pushed out and push away sky, the stress of extruding, because the very high meeting of viscosity of polyacrylamide colloid adheres on wall of container, make near the concentration of the sodium hydroxide at weld bond discharge port place enrichment to increase, therefore near the weld bond discharge port can reach the condition of caustic embrittlement, and have the caustic embrittlement of generation corrosion cracking possible.Can emit a large amount of carbonic acid gas in hydrolysis reaction in addition, because water vapour makes titanium dioxide, the stainless steel vessel tank skin more than liquid level be produced corrosion.When the production technique adjustment need to be adjusted to rear alkali addition process to front alkali addition process, because the reactor that front adds alkali generally all is not coated with non-sticky metallic coating, therefore also need again to do non-sticky metallic coating after adjusting process, make troubles and waste to production.
The utility model content
the utility model is single for solving existing production polyacrylamide reactor inside coating, adaptability is not strong, erosion resistance particularly anti-" caustic embrittlement " corrosive nature is poor, especially rear alkali addition process is made the reactor of base material of carbon steel, in case the coating damage carbon steel can produce DeR to the polyacrylamide colloid of reaction, affect reaction mass, on the other hand when the damage of reactor inside coating, want enamel spraying and polytetrafluoro coating, must integral body transport producer's sintering again back, cause enterprise to stop production, the problem of loss substantial contribution, and then a kind of inwall is proposed with the polyacrylamide reactor of anticorrosion non-sticky metallic coating.
The utility model is to address the above problem the technical scheme of taking to be: the utility model comprises reaction vessel, scribbles successively the fluororesin modified pottery sealing of NGML metal composite coating and FTB non-sticky metallic coating on the inner side-wall of reaction vessel.
The beneficial effects of the utility model are: the utility model corrosion resistance and good, inside coating is not fragile, the sealing non-sticky metallic coating is in case can directly keep in repair at the scene after damaging, need not again to do at the scene coating, or transport reactor back former factory and keep in repair, reduce the production maintenance cost of enterprise, improved production efficiency, reduced the loss of business capital.
Description of drawings
Fig. 1 is one-piece construction schematic diagram of the present utility model, and Fig. 2 is A place enlarged view in Fig. 1.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1 and Fig. 2, the described a kind of inwall of present embodiment comprises reaction vessel 1 with the polyacrylamide reactor of anticorrosion non-sticky metallic coating, scribbles successively the fluororesin modified pottery sealing of NGML metal composite coating 2 and FTB non-sticky metallic coating 3 on the inner side-wall of reaction vessel 1.
In present embodiment, NGML metal composite coating 2 is comprised of nichrome and other trace rare earths, wherein the content of nickel accounts for 80%, chromium accounts for 20%, the fluororesin modified pottery sealing non-sticky metallic coating of FTB (3) is take the FEVE fluorocarbon resin as main film forming substance, add nano ceramics micro mist and auxiliary agent, prepare by method of modifying.
the effect of NGML metal composite coating 2 be utilize nichrome carbon steel or stainless steel body in corrosive medium such as carbonic acid gas, sodium hydroxide, the corrosive mediums such as sodium carbonate are kept apart, at first nichrome surface generates the mixolimnion of nickel oxide and chromic oxide, even oxidation occurs in chromium subsequently, generate chromium oxide layer, and the nickel chromium triangle of coatingsurface point eutectic oxide film is conducive to the chromium generation selective oxidation in coating, form the brilliant protective membrane of chromic oxide and NiCr2O4 point, make coating have good corrosion and heat resistant, alkali resistant corrodibility, thereby effectively stop carbon steel reactor and polyacrylamide to produce the generation of DeR and carbon steel and stainless steel " caustic embrittlement " corrosion cracking, NGML metal composite coating 2 has good sticking power with carbon steel and stainless steel simultaneously, the distortion of energy adaptive response still in normal range, do not stick up skin in the situation such as expand with heat and contract with cold, the destructions such as shelling, NGML metal composite coating 2 has good wear-resistant ability, NGML metal composite coating 2 is comprised of the electric arc spraying nichrome wire.
The fluororesin modified pottery sealing of FTB non-sticky metallic coating 3 has good self-cleaning performance, stain resistant and wash-resistant property, good weather resisteant, chemical resistance, have high heat stability and unreactiveness, the fluororesin modified pottery sealing of FTB non-sticky metallic coating 3 can directly keep in repair at the scene, need not again to do at the scene coating, reduce the production maintenance cost of enterprise, improved production efficiency.
Other composition and annexation are identical with embodiment one.
Embodiment two: in conjunction with Fig. 2, present embodiment is described, the described a kind of inwall of present embodiment is 0.25mm-0.35mm with the thickness of the NGML metal composite coating 2 of the polyacrylamide reactor of anticorrosion non-sticky metallic coating.
Present embodiment can reduce the porosity of NGML metal composite coating 2, process through the fluororesin modified pottery sealing of spraying FTB non-sticky metallic coating 3 again, making the liquid of non-viscous paint penetrate into the stack of NGML metal composite coating 2 goes in netted, thereby NGML metal composite coating 2 holes have been guaranteed, sealing non-sticky metallic coating 3 makes the bonding strength of the fluororesin modified pottery sealing non-sticky metallic coating 3 of FTB and NGML metal composite coating 2 very high due to the grappling effect of NGML metal composite coating 2.
Other composition and annexation are identical with embodiment one.
Embodiment three: in conjunction with Fig. 2, present embodiment is described, the described a kind of inwall of present embodiment is 0.30mm with the thickness of the NGML metal composite coating 2 of the polyacrylamide reactor of anticorrosion non-sticky metallic coating.Other composition and annexation are identical with embodiment two.
Embodiment four: in conjunction with Fig. 2, present embodiment is described, the described a kind of inwall of present embodiment is 0.25mm-0.30mm with the thickness of the fluororesin modified pottery sealing of the FTB of the polyacrylamide reactor of anticorrosion non-sticky metallic coating non-sticky metallic coating 3.Other composition and annexation are identical with embodiment one.
Embodiment five: in conjunction with Fig. 2, present embodiment is described, the described a kind of inwall of present embodiment is 0.30mm with the thickness of the fluororesin modified pottery sealing of the FTB of the polyacrylamide reactor of anticorrosion non-sticky metallic coating non-sticky metallic coating 3.Other composition and annexation are identical with embodiment four.
Claims (5)
1. an inwall is with the polyacrylamide reactor of anticorrosion non-sticky metallic coating, it comprises reaction vessel (1), it is characterized in that: scribble successively the fluororesin modified pottery sealing of NGML metal composite coating (2) and FTB non-sticky metallic coating (3) on the inner side-wall of reaction vessel (1).
2. a kind of inwall with the polyacrylamide reactor of anticorrosion non-sticky metallic coating, is characterized in that according to claim 1: the thickness of NGML metal composite coating (2) is 0.25mm-0.35mm.
3. a kind of inwall with the polyacrylamide reactor of anticorrosion non-sticky metallic coating, is characterized in that according to claim 2: the thickness of NGML metal composite coating (2) is 0.30mm.
4. a kind of inwall with the polyacrylamide reactor of anticorrosion non-sticky metallic coating, is characterized in that according to claim 1: the thickness of the fluororesin modified pottery sealing non-sticky metallic coating of FTB (3) is 0.25mm-0.30mm.
5. a kind of inwall with the polyacrylamide reactor of anticorrosion non-sticky metallic coating, is characterized in that according to claim 4: the thickness of the fluororesin modified pottery sealing non-sticky metallic coating of FTB (3) is 0.30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220733591 CN202989036U (en) | 2012-12-27 | 2012-12-27 | Polyacrylamide reaction kettle with anticorrosive non-stick coating on inner wall thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220733591 CN202989036U (en) | 2012-12-27 | 2012-12-27 | Polyacrylamide reaction kettle with anticorrosive non-stick coating on inner wall thereof |
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| CN202989036U true CN202989036U (en) | 2013-06-12 |
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| CN 201220733591 Expired - Fee Related CN202989036U (en) | 2012-12-27 | 2012-12-27 | Polyacrylamide reaction kettle with anticorrosive non-stick coating on inner wall thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104891765A (en) * | 2015-05-22 | 2015-09-09 | 成都恩承油气有限公司 | Material drying and thermolysis method |
| CN104558309B (en) * | 2013-10-15 | 2017-09-29 | 中国石油化工股份有限公司 | A kind of polymerization reaction kettle component and its application method |
| CN107281985A (en) * | 2017-07-31 | 2017-10-24 | 浙江越千树数码科技有限公司 | The glue-making tank-reactor of coating machine glue flow directing device |
-
2012
- 2012-12-27 CN CN 201220733591 patent/CN202989036U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104558309B (en) * | 2013-10-15 | 2017-09-29 | 中国石油化工股份有限公司 | A kind of polymerization reaction kettle component and its application method |
| CN104891765A (en) * | 2015-05-22 | 2015-09-09 | 成都恩承油气有限公司 | Material drying and thermolysis method |
| CN107281985A (en) * | 2017-07-31 | 2017-10-24 | 浙江越千树数码科技有限公司 | The glue-making tank-reactor of coating machine glue flow directing device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20131227 |