CN102505122B - Glauberite pipeline scale descaling agent and application thereof - Google Patents
Glauberite pipeline scale descaling agent and application thereof Download PDFInfo
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- CN102505122B CN102505122B CN201110297647.1A CN201110297647A CN102505122B CN 102505122 B CN102505122 B CN 102505122B CN 201110297647 A CN201110297647 A CN 201110297647A CN 102505122 B CN102505122 B CN 102505122B
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- glauberite
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- agent
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- GYZGFUUDAQXRBT-UHFFFAOYSA-J calcium;disodium;disulfate Chemical compound [Na+].[Na+].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GYZGFUUDAQXRBT-UHFFFAOYSA-J 0.000 title claims abstract description 45
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 50
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims abstract description 21
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims abstract description 21
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims abstract description 11
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 8
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 8
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 7
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 7
- 239000011734 sodium Substances 0.000 claims description 24
- 150000003839 salts Chemical class 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 239000002253 acid Substances 0.000 abstract description 6
- 241001131796 Botaurus stellaris Species 0.000 abstract description 4
- 239000008139 complexing agent Substances 0.000 abstract description 3
- 230000005764 inhibitory process Effects 0.000 abstract description 2
- 239000013049 sediment Substances 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 abstract description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract 2
- 239000000920 calcium hydroxide Substances 0.000 abstract 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract 2
- 235000011116 calcium hydroxide Nutrition 0.000 abstract 2
- 229960001484 edetic acid Drugs 0.000 abstract 2
- 239000000243 solution Substances 0.000 abstract 2
- 239000007832 Na2SO4 Substances 0.000 abstract 1
- 239000012670 alkaline solution Substances 0.000 abstract 1
- 229910052925 anhydrite Inorganic materials 0.000 abstract 1
- 238000004090 dissolution Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
- 238000002203 pretreatment Methods 0.000 abstract 1
- 230000001131 transforming effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 239000011575 calcium Substances 0.000 description 13
- 238000005303 weighing Methods 0.000 description 13
- 239000012467 final product Substances 0.000 description 11
- 238000002360 preparation method Methods 0.000 description 11
- 239000010802 sludge Substances 0.000 description 11
- 238000002474 experimental method Methods 0.000 description 10
- 238000001556 precipitation Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 7
- 229910052719 titanium Inorganic materials 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- 239000012071 phase Substances 0.000 description 5
- 230000003381 solubilizing effect Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000000536 complexating effect Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 239000010440 gypsum Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 101150096185 PAAS gene Proteins 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002455 scale inhibitor Substances 0.000 description 1
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Detergent Compositions (AREA)
Abstract
The invention discloses a glauberite pipeline scale descaling agent and application thereof. The descaling agent comprises the following components in percentage by weight: 10-25% of NaOH, 5-15% of Na2S2O35H2O, and 0.05-0.5% of sodium polyacrylate. The descaling agent provided by the invention can be used for transforming insoluble CaSO4 into soluble Ca(OH)2 and Na2SO4; a proper amount of Na2S2O35H2O serving as a complexing agent is added and complexed with Ca<2+> in Ca(OH)2 to form a more stable complex, a new precipitate is prevented from generating, and a dissolution reaction is promoted to happen; a proper amount of EDTA (ethylene diamine tetraacetic acid) and a proper amount of polyacrylamide are added to realize a more remarkable scale inhibition effect; and acid is not contained in the components of the descaling agent, and no acid is generated in the descaling process, so that the descaling agent has small corrosive influence on a salt manufacturing pipeline and small influence on the mechanical performance of the salt manufacturing pipeline; and after being subjected to simple sediment treatment, a residual solution obtained after filtering can be returned to a bittern pre-treatment system, so that the alkaline solution in the residual solution can be utilized, so that sewage is hardly drained, and the descaling agent is environmentally-friendly.
Description
Technical field
The present invention relates to a kind of chemical detergent, particularly a kind of chemical detergent of removing glauberite.
Background technology
Glauberite is the double salt of sodium sulfate and calcium sulfate, and chemical formula is xNa
2sO
4yCaSO
4nH
2o.And the calcium sulfate wherein solubleness in water is in Table 1.
The solubleness of table 1 calcium sulfate under differing temps
From table 1, the solubleness of calcium sulfate in water is less, and variation with temperature exists extreme value.When temperature is more than 40 ℃, the solubleness of calcium sulfate in water is along with the rising of temperature reduces.Therefore, in heating tube, because pipe surface temperature is high, when the calcium ion in solution and sulfate ion concentration are when higher, easily Precipitation.
At Salt Industry, especially, after vacuum salt production system operation some cycles, part salt making equipment (the particularly water back of Heat Room) can produce scale formation in various degree, and this is the ubiquitous problem of Salt Industry.In order not affect normal production run, enhance productivity, need to regularly carry out dirty removing processing.
Present inventor carries out composition analysis for the pipeline dirt of vacuum salt production equipment especially and detects discovery, the composition of this dirt layer is mainly glauberite, and the classical group of this glauberite becomes calcium sulfate mass content >=60%, and sodium sulfate quality content >=10%, take calcium sulfate as main.
For the research of glauberite dirt, the people such as Zhu Jingquan utilize Na
2sO
4-CaSO
4-NaCl-H
2o quarternary phase diagram has been set forth the physical and chemical condition that glauberite forms, and points out: due to CaSO
4solubleness very little, so the phase region of gypsum occupies most areas in whole phase region, the phase region of other material is very little.In glauberite phase region, Ca
2+and Na
+mol ratio be 1:486～l:6920, the liquid phase composition that forms glauberite will have high Na+ content and extremely low Ca
2+content, and the bittern in salt industry meets such condition undoubtedly, has the condition that forms glauberite dirt.
The people such as Liu Chenglin point out, with the raising of temperature, and the range extension of glauberite phase region.Therefore, temperature is higher, is more conducive to separating out of glauberite, and this can be interpreted as mainly Precipitation in heating tube of what glauberite dirt.Meanwhile, the people such as Liu Chenglin point out, under certain condition, glauberite and gypsum be Precipitation simultaneously, and both amount of substances are identical, often separate out 1 mol Na that is:
2sO
4caSO
4, separate out 1 mol Na simultaneously
2sO
4, in theory, now Na in precipitation system
2sO
4content be 34.3%, CaSO
4content be 65.7%, approach with the composition of glauberite dirt in heating tube.
Therefore, tentatively infer, in heating tube, the formation of glauberite dirt is because the temperature of water back is higher, is generally 70～130 ℃, Ca in bittern
2+and Na
+mole smaller, meet the condition that glauberite is separated out, and when sodium-chlor is separated out, saltcake and gypsum are separated out simultaneously.
And for the ducted typical glauberite dirt of salt manufacturing, current removing method mainly adopts high pressure water descaling method, a kind of method that adopts physics to wash away is removed, although this method is more friendly to environment, high to the better simply equipment scale removal of structure efficiency.But, to the inapplicable high pressure water descaling method of the more complicated equipment of structure, for densification and the very high dirt layer of hardness, hydraulic pressure is too low can not meet scale removal requirement, and adopts higher hydraulic pressure, for the security of equipment, has impact, equipment has destroyed possibility, also just indirectly causes cost to increase.
If adopt chemical cleaning method, at present not relevant research report also, trace it to its cause, be on the one hand owing to there being following technical barrier: calcium sulfate belongs to strong acid salt, therefore, adopt traditional pickling descaling strong acid poor to the salt making equipment pipeline dirt solute effect take calcium sulfate as master, simultaneously because the material of water back material generally adopts i.e. 2205 duplex stainless steels of titanium material or 2205DSS(), especially easily there is hydrogen embrittlement in titanium in acidic medium, and therefore traditional pickling descaling agent prescription can not be applicable to solve this technical problem.
Summary of the invention
One of goal of the invention of the present invention is the problem for above-mentioned existence, and a kind of be applicable to remove glauberite pipeline dirt and Novel descaling agent that can corrosion pipeline are provided.
The technical solution used in the present invention is such: a kind of Glauberite pipeline scale descaling agent, comprises the following component of meter in mass ratio:
NaOH： 10-25%
Na
2S
2O
3·5H
2O: 5-15%
Sodium polyacrylate: 0.05-0.5%.
Contriver, through great many of experiments, has selected a kind of scale remover take NaOH as host, and its resisting scales is: CaSO
4+ 2NaOH=Ca (OH)
2+ Na
2sO
4
By reaction (its essence is solubilizing reaction), by insoluble CaSO
4be converted into soluble Ca (OH)
2and Na
2sO
4; In addition, in order to prevent the generation of new precipitation, and for Ca (OH)
2the consideration of electrolytic equilibrium, adds Na
2s
2o
35H
2o is as complexing agent, and determined a comparatively suitable add-on by great many of experiments, allows itself and Ca (OH)
2ca
2+carry out complexing, form more stable complex compound, prevent that new precipitation from generating, and promote the generation of solubilizing reaction; But, through research, find, in this case, the Ca that part is tiny
2+powder still can again be reunited and be formed new dirt layer, so the present invention has also added the sodium polyacrylate (being PAAS) of 0.05-0.5%, because contriver studies, finds that appropriate sodium polyacrylate has dissemination to precipitation, can prevent tiny Ca
2+powder is again reunited and is formed dirt layer.
As preferably: the EDTA that also comprises 0.01-0.2%.Adding of appropriate EDTA can further complexing Ca (OH)
2ca
2+, prevent that new precipitation from generating, and promote the generation of solubilizing reaction.
Further: the polyacrylamide that also comprises 0.05-0.1%.Adding of appropriate polyacrylamide can prevent that new precipitation from generating, and promotes the generation of solubilizing reaction better.
Another object of the present invention is to provide a kind of application of above-mentioned Glauberite pipeline scale descaling agent; The technical scheme adopting is: the usage quantity when being applied to the scale removal of glauberite pipeline dirt, the scale remover using is (10-50) with the mass ratio of dirt layer: 1.
As preferably: this scale remover is particularly useful for consisting of calcium sulfate mass content >=60%, and the glauberite pipeline dirt of sodium sulfate quality content >=10%.
In sum, owing to having adopted technique scheme, the invention has the beneficial effects as follows: scale remover provided by the present invention can be by insoluble CaSO
4be converted into soluble Ca (OH)
2and Na
2sO
4; Add appropriate Na simultaneously
2s
2o
35H
2o is as complexing agent, allows itself and Ca (OH)
2in Ca
2+carry out complexing, form more stable complex compound, prevent that new precipitation from generating, and promote the generation of solubilizing reaction; Adding of appropriate EDTA and polyacrylamide, make scale inhibition effect more obvious; Meanwhile, owing to not containing acid in the moiety of this Scale inhibitors, in scale removal process, do not generate acid, so very little to the infection of salt manufacturing pipeline, simultaneously very little on the mechanical property impact of salt manufacturing pipeline yet yet.
In addition, the raffinate after scale removal, after simple sediment is processed, can be got back to bittern pretreatment system and utilize alkali lye wherein, almost there is no sewage discharge, environmental friendliness.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Embodiment 1:
(1) a glauberite eliminating sludge in pipe agent, the formula adopting consists of
NaOH：20g
Na
2S
2O
3.5H
2O：12g
H
2O：68g
Preparation method: will directly be dissolved in the water of above-mentioned quality after above-mentioned two kinds of component accurate weighings and get final product.
During use, this scale remover is 30:1 with dirt layer mass ratio.
Embodiment 2:
The agent of a kind of glauberite eliminating sludge in pipe, the formula adopting consists of
NaOH：10g
Na
2S
2O
3.5H
2O：5g
H
2O：85g
Preparation method: will directly be dissolved in the water of above-mentioned quality after above-mentioned two kinds of component accurate weighings and get final product.
During use, this scale remover is 50:1 with dirt layer mass ratio.
Embodiment 3
The agent of a kind of glauberite eliminating sludge in pipe, the formula adopting consists of
NaOH：25g
Na
2S
2O
3.5H
2O：15g
H
2O：60g
Preparation method: will directly be dissolved in the water of above-mentioned quality after above-mentioned two kinds of component accurate weighings and get final product.
During use, this scale remover is 40:1 with dirt layer mass ratio.
Embodiment 4
The agent of a kind of glauberite eliminating sludge in pipe, the formula adopting consists of
NaOH：25g
Na
2S
2O
3.5H
2O：15g
Sodium polyacrylate: 0.05g
H
2O：59.95g
Preparation method: first by said components accurate weighing, then sodium polyacrylate is configured to 5% solution, then dissolves under the water-bath of 80 ℃ and get final product.
During use, this scale remover is 40:1 with dirt layer mass ratio.
Embodiment 5
The agent of a kind of glauberite eliminating sludge in pipe, the formula adopting consists of
NaOH：25g
Na
2S
2O
3.5H
2O：15g
Sodium polyacrylate: 0.5g
H
2O：59.5g
Preparation method: first by said components accurate weighing, then sodium polyacrylate is configured to 5% solution, then dissolves under the water-bath of 80 ℃ and get final product.
During use, this scale remover is 40:1 with dirt layer mass ratio.
Embodiment 6
The agent of a kind of glauberite eliminating sludge in pipe, the formula adopting consists of
NaOH：25g
Na
2S
2O
3.5H
2O：15g
Sodium polyacrylate: 0.25g
H
2O：59.75g
Preparation method: first by said components accurate weighing, then sodium polyacrylate is configured to 5% solution, then dissolves under the water-bath of 80 ℃ and get final product.
During use, this scale remover is 40:1 with dirt layer mass ratio.
Embodiment 7
The agent of a kind of glauberite eliminating sludge in pipe, the formula adopting consists of
NaOH：25g
Na
2S
2O
3.5H
2O：15g
Sodium polyacrylate: 0.05g
EDTA：0.01g
H
2O：59.94g
Preparation method: first by said components accurate weighing, then sodium polyacrylate is configured to 5% solution, then dissolves under the water-bath of 80 ℃ and get final product.
During use, this scale remover is 40:1 with dirt layer mass ratio.
Embodiment 8:
The agent of a kind of glauberite eliminating sludge in pipe, the formula adopting consists of
NaOH：25g
Na
2S
2O
3.5H
2O：15g
Sodium polyacrylate: 0.05g
EDTA：0.2g
H
2O：59.75g
Preparation method: first by said components accurate weighing, then sodium polyacrylate is configured to 5% solution, then dissolves under the water-bath of 80 ℃ and get final product.
During use, this scale remover is 40:1 with dirt layer mass ratio.
Embodiment 9
The agent of a kind of glauberite eliminating sludge in pipe, the formula adopting consists of
NaOH：25g
Na
2S
2O
3.5H
2O：15g
Sodium polyacrylate: 0.05g
EDTA：0.01g
Polyacrylamide: 0.05g
H
2O：59.89g
Preparation method: first by said components accurate weighing, then sodium polyacrylate is configured to 5% solution, then dissolves under the water-bath of 80 ℃ and get final product.
During use, this scale remover is 40:1 with dirt layer mass ratio.
Embodiment 10
The agent of a kind of glauberite eliminating sludge in pipe, the formula adopting consists of
NaOH：25g
Na
2S
2O
3.5H
2O：15g
Sodium polyacrylate: 0.05g
EDTA：0.01g
Polyacrylamide: 0.1g
H
2O：59.84g
Preparation method: first by said components accurate weighing, then sodium polyacrylate is configured to 5% solution, then dissolves under the water-bath of 80 ℃ and get final product.
During use, this scale remover is 40:1 with dirt layer mass ratio.
Embodiment 11
The agent of a kind of glauberite eliminating sludge in pipe, the formula adopting consists of
NaOH：25g
Na
2S
2O
3.5H
2O：15g
Sodium polyacrylate: 0.05g
EDTA：0.01g
Polyacrylamide: 0.08g
H
2O：59.86g
Preparation method: first by said components accurate weighing, then sodium polyacrylate is configured to 5% solution, then dissolves under the water-bath of 80 ℃ and get final product.
Embodiment 12
Descale effect contrast, the scale remover of embodiment 1-11 gained is carried out to scale removal contrast experiment, during scale removal, dirt layer consists of: calcium sulfate mass content is 72%, sodium sulfate quality content is 14%, all the other are crystal water and free-water, take 24 hours as point of observation, using descaling rate as the parameter of weighing descale effect, described descaling rate is: (quality of particle diameter part more than 10mm after the quality-scale removal of dirt layer) × 100%/dirt layer quality, and the experimental result obtaining is as table 2:
Table 2: descale effect contrast and experiment
Embodiment 13
Descale effect contrast, the scale remover of embodiment 1-11 gained is carried out to scale removal contrast experiment, during scale removal, dirt layer consists of: calcium sulfate mass content is 85%, sodium sulfate quality content is 10%, all the other are crystal water and free-water, take 24 hours as point of observation, using descaling rate as the parameter of weighing descale effect, described descaling rate is: (quality of particle diameter part more than 10mm after the quality-scale removal of dirt layer) × 100%/dirt layer quality, and the experimental result obtaining is as table 3:
Table 3: descale effect contrast and experiment
As can be seen from Table 3: even the quality of calcium sulfate reaches 90% in glauberite pipeline dirt, adopt scale remover of the present invention still can reach good descale effect.
Embodiment 14
Scale remover of the present invention is for the corrosion experiment of salt manufacturing pipeline
The scale remover formula that the present embodiment adopts embodiment 1,5,11 to provide is tested, and adopts respectively titanium material pipeline and 2205 duplex stainless steels (2205DSS) to test,
Table 4: the corrosion experiment result of scale remover of the present invention to salt manufacturing pipeline
From table 4, titanium material and 2205DSS are all more stable in scale remover of the present invention, and scale remover is very little to the infection of salt manufacturing pipeline.
Embodiment 15
Scale remover of the present invention is for the hardness impact experiment of salt manufacturing pipeline
The scale remover formula that the present embodiment adopts embodiment 1,2,11 to provide is tested, and adopts respectively titanium material pipeline and 2205 duplex stainless steels (2205DSS) to test,
Table 5: experiment of hardness result
From table 5, after titanium material soaks in scale remover of the present invention, hardness has reducing to a certain degree, and with the increase of NaOH concentration, hardness further reduces, but the amplitude reducing is less, consider test error, after thinking that titanium material soaks in formula system, performance there is no noticeable change.And after 2205DSS soaks in scale remover of the present invention, hardness changes hardly.
Claims (5)
1. a Glauberite pipeline scale descaling agent, is characterized in that: comprise the following component of meter in mass ratio:
NaOH： 10-25%
Na
2S
2O
3·5H
2O: 5-15%
Sodium polyacrylate: 0.05-0.5%.
2. Glauberite pipeline scale descaling agent according to claim 1, is characterized in that: the EDTA that also comprises 0.01-1%.
3. Glauberite pipeline scale descaling agent according to claim 2, is characterized in that: the polyacrylamide that also comprises 0.05-0.1%.
4. the application of the Glauberite pipeline scale descaling agent described in claims 1 to 3 any one, is characterized in that: the usage quantity when being applied to the scale removal of glauberite pipeline dirt, the scale remover using is (10-50) with the mass ratio of dirt layer: 1.
5. the application of Glauberite pipeline scale descaling agent claimed in claim 4, is characterized in that: be applied to glauberite pipeline dirt glauberite consist of calcium sulfate mass content >=60% and sodium sulfate quality content >=10%.
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| CN105238384A (en) * | 2015-10-30 | 2016-01-13 | 中国石油天然气股份有限公司 | Preparation method for precipitation inhibitor used for sandstone acidification |
| CN110143676A (en) * | 2019-06-13 | 2019-08-20 | 科得邦（江苏）环境科技有限公司 | The nontoxic scale preventative and preparation method thereof being concentrated for halogen transportation pipeline and bittern evaporation |
| CN111252913A (en) * | 2020-03-02 | 2020-06-09 | 西南交通大学 | Composite scale inhibitor for concrete drainage pipeline and application thereof |
| CN113751441B (en) * | 2021-09-09 | 2022-10-11 | 吉林吉恩镍业股份有限公司 | Method for cleaning scale on inner wall of evaporator in nickel sulfate production process |
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| CN101622199A (en) * | 2007-01-11 | 2010-01-06 | 纳尔科公司 | Suppressing dirt in desalination system forms and sedimentary method |
| CN101844834A (en) * | 2010-06-04 | 2010-09-29 | 内蒙古天晨科技有限责任公司 | Low-phosphorous reverse osmosis membrane antisludging agent |
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