CN111205934A - Cleaning agent suitable for descaling of landfill leachate evaporator, and preparation method and application thereof - Google Patents
Cleaning agent suitable for descaling of landfill leachate evaporator, and preparation method and application thereof Download PDFInfo
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- CN111205934A CN111205934A CN202010118598.XA CN202010118598A CN111205934A CN 111205934 A CN111205934 A CN 111205934A CN 202010118598 A CN202010118598 A CN 202010118598A CN 111205934 A CN111205934 A CN 111205934A
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- Prior art keywords
- landfill leachate
- cleaning agent
- evaporator
- descaling
- scale
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- 239000012459 cleaning agent Substances 0.000 title claims abstract description 48
- 239000000149 chemical water pollutant Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 12
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 11
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims description 10
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims description 2
- VHSHLMUCYSAUQU-UHFFFAOYSA-N 2-hydroxypropyl methacrylate Chemical compound CC(O)COC(=O)C(C)=C VHSHLMUCYSAUQU-UHFFFAOYSA-N 0.000 claims 1
- STNSYZSNIYTNMI-UHFFFAOYSA-N azane;[2-[bis(phosphonomethyl)amino]ethyl-(phosphonomethyl)amino]methylphosphonic acid Chemical compound N.OP(O)(=O)CN(CP(O)(O)=O)CCN(CP(O)(O)=O)CP(O)(O)=O STNSYZSNIYTNMI-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 22
- 238000001704 evaporation Methods 0.000 abstract description 9
- 230000008020 evaporation Effects 0.000 abstract description 9
- 229940120146 EDTMP Drugs 0.000 abstract description 8
- NFDRPXJGHKJRLJ-UHFFFAOYSA-N edtmp Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CCN(CP(O)(O)=O)CP(O)(O)=O NFDRPXJGHKJRLJ-UHFFFAOYSA-N 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000007086 side reaction Methods 0.000 abstract description 3
- 229920000141 poly(maleic anhydride) Polymers 0.000 abstract description 2
- BDOYKFSQFYNPKF-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(carboxymethyl)amino]acetic acid;sodium Chemical compound [Na].[Na].OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O BDOYKFSQFYNPKF-UHFFFAOYSA-N 0.000 abstract 1
- 230000003301 hydrolyzing effect Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 16
- 239000000203 mixture Substances 0.000 description 11
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 10
- 238000001035 drying Methods 0.000 description 6
- 238000000967 suction filtration Methods 0.000 description 6
- 238000005303 weighing Methods 0.000 description 6
- 239000002270 dispersing agent Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229960001484 edetic acid Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229940001593 sodium carbonate Drugs 0.000 description 1
- 229940083608 sodium hydroxide Drugs 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/37—Mixtures of compounds all of which are anionic
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/044—Hydroxides or bases
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/10—Carbonates ; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/26—Organic compounds containing nitrogen
- C11D3/33—Amino carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/008—Polymeric surface-active agents
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/04—Carboxylic acids or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/34—Derivatives of acids of phosphorus
-
- C11D2111/20—
Abstract
The invention provides a cleaning agent suitable for descaling a landfill leachate evaporator, a preparation method and application thereof, and the cleaning agent suitable for descaling the landfill leachate evaporator is characterized by comprising the following components in parts by weight: 80-90 parts of water; 5-8 parts of ethylene diamine tetraacetic acid disodium; 2-6 parts of sodium carbonate; 4-6 parts of sodium hydroxide; 0.00018 to 0.0009 portion of ethylenediamine tetramethylene phosphonic acid; 0.00045 to 0.002 portion of hydrolytic polymaleic anhydride. The invention also discloses a preparation method and application of the cleaning agent suitable for removing the scale of the landfill leachate evaporator. The cleaning agent can effectively soften and remove dirt generated by a landfill leachate evaporator in the landfill leachate treatment process, basically has no corrosion loss to evaporation equipment, has no side reaction, has simple formula and good descaling effect, and solves the problem of scaling of the landfill leachate treatment evaporator.
Description
Technical Field
The invention relates to a descaling cleaning agent technology, in particular to a cleaning agent suitable for descaling a landfill leachate evaporator, a preparation method and application thereof.
Background
The leachate is high-concentration wastewater with serious pollution and complex components, the components and water quantity of the leachate change greatly along with seasons and landfill time, the quality of the landfill leachate is more and more complex along with the increasing attention of the country to the environmental protection industry, and the environmental protection bureau continuously puts forward various regulation standards for sewage discharge control in recent years. Landfill leachate ammonia nitrogen is higher, and BOD is lower, and COD is higher, has tiny suspended particle, in the inside evaporation process of evaporimeter, can condense the difficult soluble scale on the heat exchange tube surface to the composition of scale is complicated, and the principal ingredients includes: impurities dissolved in water in an ionic or molecular state and impurities existing in a colloidal state, and components of the scale mainly exist in the forms of carbonate scale, sulfate scale and metal ions.
The heat exchange rate of the heat exchange tube of the evaporator for the landfill leachate after scaling is greatly reduced, the evaporation efficiency is seriously influenced, a large amount of resources are wasted, and even normal evaporation operation cannot be carried out. Therefore, the economic and effective chemical cleaning agent has important significance for treating the landfill leachate.
Disclosure of Invention
The invention aims to provide a cleaning agent suitable for descaling a landfill leachate evaporator, aiming at the problems that the heat exchange rate of a heat exchange tube of the landfill leachate evaporator after scaling at present is greatly reduced and the evaporation efficiency is seriously influenced, the cleaning agent can effectively soften and remove the scale generated by the landfill leachate evaporator in the landfill leachate treatment process, basically has no corrosion loss to evaporation equipment, has no side reaction, has a simple formula and a good descaling effect, and solves the scaling problem of the landfill leachate treatment evaporator.
In order to achieve the purpose, the invention adopts the technical scheme that: the cleaning agent suitable for the descaling of the landfill leachate evaporator comprises the following components in parts by weight:
further, the cleaning agent suitable for removing the scale of the landfill leachate evaporator comprises the following components in parts by weight:
further, the cleaning agent suitable for removing the scale of the landfill leachate evaporator comprises the following components in parts by weight:
the cleaning agent is suitable for cleaning the landfill leachate evaporator, sodium carbonate is added into disodium ethylene diamine tetraacetate for compound use, and the optimal dosage ratio of the disodium ethylene diamine tetraacetate to the sodium carbonate is 2: 1. The concentration of the disodium ethylene diamine tetraacetate is 5-8% by weight, preferably 6.02% by weight, and the concentration of the sodium carbonate is 2-4% by weight, preferably 3.01% by weight. Adding matched dispersing agent, ethylenediamine tetramethylene phosphonic acid (EDTMPS) and hydrolyzed polymaleic anhydride (HPMA) into an alkali solution of disodium ethylenediamine tetraacetate and sodium carbonate, wherein the adding amount of the dispersing agent in the solution is 0.00063-0.0029% by weight, and preferably 0.0018% by weight. The dispersant comprises the following components: 0.00045% EDTMPS, 0.00135% HPMA.
The invention also discloses a preparation method of the cleaning agent suitable for removing scale of the landfill leachate evaporator, which comprises the following steps: according to the weight ratio, the ethylene diamine tetraacetic acid, the sodium carbonate, the sodium hydroxide, the EDTMPS and the HPMA agents are added into water and stirred, the rotating speed of a stirrer is controlled to be 100 plus one hour/minute and 500 plus one minute, and the cleaning agent suitable for removing the scale of the landfill leachate evaporator is obtained after continuous stirring is carried out for 0.1 to 1.5 hours. The rotation speed of the stirrer is preferably controlled at 200-400 rpm, and the stirring is continued for 0.2-1 hour.
The invention also discloses the application of the cleaning agent suitable for the garbage leachate evaporator descaling in the field of the garbage leachate evaporator descaling, wherein the cleaning temperature suitable for the garbage leachate evaporator descaling is 40-100 ℃, and preferably 50-80 ℃; the cleaning method is a dynamic circulation stirring method.
The cleaning agent for descaling the garbage leachate evaporator has a scientific and reasonable formula, and a simple and feasible preparation method, can be widely applied to cleaning the garbage leachate evaporator, and has the following advantages compared with the prior art:
1) the main components of the scale formed by the garbage leachate evaporator are carbonate scale, sulfate scale and metal ions, the scale sample is very hard and is not easy to dissolve, and under the alkaline condition, the scale sample is easier to dissolve and disperse by matching with EDTMPS and HPMA in the components of the cleaning agent, so that the cleaning agent has better effect.
2) The disodium ethylene diamine tetraacetate, also called EDTA-2Na, in the components of the cleaning agent is a necessary chelating agent, and has better chelating action on most metal ions in the landfill leachate, the sodium carbonate reacts with the calcium sulfate in the landfill leachate to obtain calcium carbonate and sodium sulfate, the sodium sulfate can not react with the calcium carbonate, and the reaction from slightly soluble to insoluble can be performed to the end, the calcium sulfate scale can be converted into carbonate scale to be subjected to a liberation reaction with the disodium ethylene diamine tetraacetate, and the EDTMPS and the HPMA in the components of the cleaning agent are matched under the alkaline condition to be more easily dissolved and dispersed scale samples.
3) The invention utilizes the mixed medicament of the disodium ethylene diamine tetraacetate, the sodium carbonate and the matched dispersant as the cleaning agent to comprehensively remove the dirt attached on the heat exchange tube in the garbage leachate evaporator. The invention relates to a method for producing scale substances by a landfill leachate evaporation process, which comprises the following main components of (1) impurities dissolved in water in an ion or molecular state; (2) sulfate scale; (3) carbonate scale and evaporator internal environment characteristics: the temperature is high, and the scaling speed of the heat exchange tube is high; the MVR evaporation process has the following material characteristics: 316L, titanium material. The cleaning agent is used for cleaning the landfill leachate evaporator, and the cleaning agent has good cleaning effect on dirt in the evaporator, low cost and extremely low corrosion rate on equipment under the conditions of certain concentration and temperature, so that the problem of scaling of the landfill leachate evaporator is further solved.
In conclusion, the cleaning agent adopting the mixed medicament of the disodium ethylene diamine tetraacetate, the sodium carbonate and the matched dispersing agent can effectively soften and remove dirt generated by the landfill leachate evaporator in the landfill leachate treatment process, basically has no corrosion loss to evaporation equipment, has no side reaction, simple formula and good descaling effect, and solves the problem of scaling of the landfill leachate treatment evaporator. Thereby achieving the purposes of reducing the cost, increasing the efficiency of the evaporator and saving energy.
Detailed Description
According to the method for testing the influence of the cleaning agent on the descaling effect, the cleaning temperature is controlled to be 40-100 ℃; the cleaning method is carried out by a dynamic circulation stirring method; (1) firstly, preparing cleaning agents with different proportions, respectively adding scale samples with equal mass and equal surface area into an experimental container, placing the experimental container in a water bath with the same temperature, stirring (without touching the scale samples), carrying out scale removal reaction, detecting whether the scale samples remain or not after the reaction is finished, detecting the mass of the scale samples, carrying out suction filtration on a scale sample mixture, drying, weighing the weight of the scale samples, and analyzing the influence of the dosing concentration on the scale removal effect of the cleaning agent through experimental data. (2) Firstly, preparing a cleaning agent with the best effect, respectively adding the same amount of scale samples with the same surface area into an experimental container, placing the experimental container in water baths with different temperatures, stirring (without touching the scale samples), carrying out scale removal reaction, detecting whether the scale samples remain or not after the reaction is finished, detecting the quality of the scale samples, carrying out suction filtration on a scale sample mixture, drying, weighing the weight of the scale samples, and analyzing the influence of the reaction temperature on the scale removal effect of the scale remover according to experimental data. (3) Firstly, preparing a cleaning agent with the best descaling effect, respectively adding equivalent scale samples with the same surface area into an experimental container, placing the experimental container in a water bath with the temperature of the experimental effect, stirring (without touching the scale samples), carrying out descaling reaction until the scale samples are completely dissolved, carrying out suction filtration on a scale sample mixture after the reaction is finished, drying, weighing the weight of the mixture, recording the experimental time, and analyzing the influence of the reaction time on the descaling cleaning agent effect through experimental data.
The invention is further illustrated by the following examples:
examples 1 to 6
Examples 1-6 disclose 6 cleaning agents suitable for use in a waste leachate vaporizer, comprising the components and total formulations shown in table 1.
The preparation method of the cleaning agent suitable for the waste leachate evaporator comprises the following steps: according to the weight ratio, adding the medicaments such as disodium ethylene diamine tetraacetate, sodium carbonate, sodium hydroxide, EDTMPS, HPMA and the like into water, stirring, controlling the rotating speed of a stirrer to be 200 revolutions per minute, and continuously stirring for 0.2 hour to obtain the cleaning agent suitable for the waste leachate evaporator.
TABLE 1 weight ratio of the components in the examples
The cleaning agent suitable for the garbage leachate evaporator prepared in the examples 1-6 is used for testing the descaling effect of the scale sample generated by the MVR evaporator, and comprises the following steps:
(1) firstly, preparing cleaning agents with different dispensing ratios, respectively adding scale samples with equal mass and equal surface area into an experimental container, placing the experimental container in a water bath with the same temperature, stirring (without touching the scale samples), carrying out scale removal reaction, detecting whether the scale samples and the mass of the scale samples remain after the reaction is finished, carrying out suction filtration on a scale sample mixture, drying, weighing the weight of the scale sample mixture, analyzing the influence of dosing concentration on the scale removal effect of a cleaning agent through experimental data, selecting a formula with a better experimental effect, refining the component ratio of the agents through the experimental effect, wherein the formula components are as shown in the table below.
(2) Firstly, preparing a cleaning agent with the best effect, respectively adding scale samples with equal mass and equal surface area into an experimental container, and placing the experimental container in water baths with different temperatures, wherein the temperatures of the constant-temperature water baths are respectively 20 ℃, 30 ℃, 40 ℃, 50 ℃, 60 ℃, 70 ℃, 80 ℃, 90 ℃ and 100 ℃. Stirring (not touch dirty appearance), carrying out the scale removal reaction, after the reaction, detecting whether remaining dirty appearance, the quality of dirty appearance, carrying out the suction filtration to dirty appearance mixture, drying, weighing its weight, through experimental data, the analysis reachs the influence of reaction temperature to scale remover scale removal effect.
(3) Firstly, preparing a cleaning agent with the best descaling effect, respectively adding equivalent scale samples with the same surface area into an experimental container, placing the experimental container in a water bath with the temperature of the experimental effect, stirring (without touching the scale samples), carrying out descaling reaction until the scale samples are completely dissolved, carrying out suction filtration on a scale sample mixture after the reaction is finished, drying, weighing the weight of the mixture, recording the experimental time, and analyzing the influence of the reaction time on the descaling cleaning agent effect through experimental data.
(4) Experiments show that the cleaning agent with the following components has the best cleaning effect at the temperature of 60 ℃, and the removal rate of a scale sample reaches about 93.42% when 14.6g of scale is continuously cleaned for 45 hours.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The cleaning agent suitable for descaling the landfill leachate evaporator is characterized by comprising the following components in parts by weight:
2. the cleaning agent suitable for the descaling of the landfill leachate evaporator as recited in claim 1, comprising the following components by weight:
3. a preparation method of a cleaning agent suitable for descaling of a landfill leachate evaporator is characterized by comprising the following steps: according to the weight ratio of the claim 1 or 2, the disodium ethylene diamine tetraacetate, the sodium carbonate, the sodium hydroxide, the EDTMPS and the HPMA agents are added into water and stirred, the rotating speed of the stirrer is controlled to be 100-500 revolutions per minute, and the cleaning agent suitable for the descaling of the evaporator of the landfill leachate is obtained after continuous stirring for 0.1-1.5 hours.
4. Use of the cleaning agent for removing scale in a landfill leachate evaporator as defined in claim 1 or 2 in the field of removing scale in a landfill leachate evaporator.
5. The use according to claim 4, wherein the cleaning temperature for the descaling of the landfill leachate evaporator is 40-100 ℃; the cleaning method is a dynamic circulation stirring method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010118598.XA CN111205934A (en) | 2020-02-26 | 2020-02-26 | Cleaning agent suitable for descaling of landfill leachate evaporator, and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010118598.XA CN111205934A (en) | 2020-02-26 | 2020-02-26 | Cleaning agent suitable for descaling of landfill leachate evaporator, and preparation method and application thereof |
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| CN111205934A true CN111205934A (en) | 2020-05-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113150880A (en) * | 2021-02-05 | 2021-07-23 | 中钢集团鞍山热能研究院有限公司 | Online cleaning agent suitable for fluorenone wastewater evaporator |
| CN113415876A (en) * | 2021-06-29 | 2021-09-21 | 江苏云尚环保装备有限公司 | Scale remover for leachate anaerobic system and preparation method thereof |
| CN114350449A (en) * | 2022-01-14 | 2022-04-15 | 厦门嘉戎技术股份有限公司 | Cleaning agent and cleaning method for landfill leachate evaporator |
| CN114949939A (en) * | 2022-04-29 | 2022-08-30 | 广州安达净水材料有限公司 | Defoaming agent for landfill leachate evaporation and preparation method thereof |
-
2020
- 2020-02-26 CN CN202010118598.XA patent/CN111205934A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113150880A (en) * | 2021-02-05 | 2021-07-23 | 中钢集团鞍山热能研究院有限公司 | Online cleaning agent suitable for fluorenone wastewater evaporator |
| CN113415876A (en) * | 2021-06-29 | 2021-09-21 | 江苏云尚环保装备有限公司 | Scale remover for leachate anaerobic system and preparation method thereof |
| CN114350449A (en) * | 2022-01-14 | 2022-04-15 | 厦门嘉戎技术股份有限公司 | Cleaning agent and cleaning method for landfill leachate evaporator |
| CN114949939A (en) * | 2022-04-29 | 2022-08-30 | 广州安达净水材料有限公司 | Defoaming agent for landfill leachate evaporation and preparation method thereof |
| CN114949939B (en) * | 2022-04-29 | 2023-10-03 | 广州安达净水材料有限公司 | Defoaming agent for landfill leachate evaporation and preparation method thereof |
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