CN108398047A - A kind of antiscale using rare earth porcelain grit to non-strong base solution, descaling method - Google Patents
A kind of antiscale using rare earth porcelain grit to non-strong base solution, descaling method Download PDFInfo
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- CN108398047A CN108398047A CN201810117653.6A CN201810117653A CN108398047A CN 108398047 A CN108398047 A CN 108398047A CN 201810117653 A CN201810117653 A CN 201810117653A CN 108398047 A CN108398047 A CN 108398047A
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- rare earth
- earth porcelain
- antiscale
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- porcelain grit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G13/00—Appliances or processes not covered by groups F28G1/00 - F28G11/00; Combinations of appliances or processes covered by groups F28G1/00 - F28G11/00
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- Thermal Sciences (AREA)
- Lubricants (AREA)
Abstract
The invention belongs to the preventing fouling field of tubular heat exchanger, a kind of antiscale using rare earth porcelain grit to non-strong base solution, descaling method are disclosed, is included the following steps：Rare earth porcelain grit is injected in hot solution to be changed, and flows and mixes with hot solution to be changed.The invention also discloses a kind of rare earth porcelain grits to the application in terms of non-strong base solution antiscale, scale removal.The beneficial effects of the present invention are：Realize passivation on line, scale removal by physics mode, can Reusability, and will not foul solution and environment.
Description
Technical field
The invention belongs to the preventing fouling fields of tubular heat exchanger, utilize rare earth porcelain grit to non-strong more particularly, to a kind of
The antiscale of aqueous slkali, descaling method.
Background technology
Tubular heat exchanger is widely used in chemical industry, light industry industrial production, is generally all followed cleaning fluid and is walked shell
Journey, unclean fluid walk the principle of tube side, it is therefore an objective to convenient for cleaning tube side dirt layer.In the heat transfer process that chemical industry, light industry produce,
The arrangement of circulating mother liquor belong to it is aforementioned walk tube side principle.
General in circulating mother liquor all to contain a small amount of solid-phase component, solid-phase component occurs due to the supersaturated very little of crystallization, temperature
It when variation, crystallizes be precipitated from mother liquor soon, since crystallization precipitation process is fast, discharges and crystallize for degree of supersaturation in solution
The carrier of formation is few, mainly adheres in heat transfer tube wall, forms the dirty layer of inside pipe wall.Initial stage formed incrustation scale than relatively soft,
But with the generation of dirty layer, heat transfer condition deteriorates, and the crystallization water in incrustation scale gradually loses, and dirty layer is hardened, and is firmly attached
In in heat transfer tube wall.As dirty layer thickness gradually increases, heat transfer coefficient of heat exchanger is gradually lower, and heat-transfer effect is increasingly
Difference is forced cleaning during shutdown when serious.
Existing antiscale, scale removal method such as mainly have：High-pressure water jet snaking, scale remover scale removal and antisludging agent prevent dry
Disturb fouling.The necessary shutdown operation of high-pressure water jet snaking, and effect is worst.Scale remover is generally chemicals, such as：Hydrogen fluorine
Acid, it is best to silicate scale effect, but hydrofluoric acid has severe toxicity, is only used for the stainless steel cleaning of industrial steel plant at present,
It cannot be used for medicine, food, salt industry；Oxalic acid is toxic, it is impossible to be used in medicine, food, salt industry；Citric acid meets derusting
Ironic citrate precipitation can be generated, new dirty layer is generated；Phosphoric acid, it is irritant, it is impossible to be used in medicine, food, salt industry.Chemistry
There are usage amounts to be difficult to control for cleaning, remains the defect that can be polluted, and need scale removal of stopping, leads to production disruption.Resistance
Dirty agent is the scale removal method of semi physical half chemical, and principle is by slightly solubility inorganic salts in disperse water, inhibits or interferes with difficulty
Precipitation of the soluble inorganic salt in metal surface, fouling, but antisludging agent are mostly high polymers such as organophosphor series, poly- carboxylic etc., are
Chemicals, narrow scope of application, and there are still the defects of pollution raw material and environment.
Invention content
It is an object of the invention to overcome above-mentioned technical deficiency, propose it is a kind of using rare earth porcelain grit to non-strong base solution
Antiscale, descaling method, solution lacks good descaling effect in the prior art, and the technology of the scale removal method of pollution will not be brought to ask
Topic.
To reach above-mentioned technical purpose, technical scheme of the present invention offer is a kind of to utilize rare earth porcelain grit to non-strong base solution
Antiscale, descaling method, include the following steps：Rare earth porcelain grit is injected in hot solution to be changed, and simultaneously with hot solution to be changed flowing
Mixing.
It is a further object of the present invention to provide a kind of rare earth porcelain grits to the application in terms of non-strong base solution antiscale, scale removal.
Compared with prior art, beneficial effects of the present invention include：Passivation on line, scale removal are realized by physics mode, it can
Reusability, and will not foul solution and environment.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to this hair
It is bright to be further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
The antiscale that the present invention provides a kind of using rare earth porcelain grit to non-strong base solution, descaling method, including walk as follows
Suddenly：
Rare earth porcelain grit is injected in hot solution to be changed, and flows and mix with hot solution to be changed by step 1；Preferable diameter
The rare earth porcelain grit of about 1mm or so, general 0.5~1.5mm, in addition, the injection rate of rare earth porcelain grit is can be controlled in, to account for thermo cycler total
The volume ratio of 5%~10% volume ratio of volume, i.e., the described rare earth porcelain grit and hot solution to be changed is 1:9~19；
Step 2 filters out the rare earth porcelain grit in solution after exchanging heat；Or, the solution after export heat exchange, rare earth porcelain grit is stayed in
In thermo cycler,
Step 3 repeats step 1 and step 2, the rare earth porcelain grit in thermo cycler and another batch of thermosol to be changed newly injected
Liquid mixes；Rare earth porcelain grit is recycled once addition inside thermo cycler, be not required to be supplemented；
Wherein, the hot solution to be changed is non-strong alkali solution, i.e., all alkali that will not be reacted with rare earth porcelain grit
Class, saline solution.
The reason of fouling is to discharge degree of supersaturation after solution is heated, generates crystalline solid.Rare earth porcelain grit participates in cycle, solution
Degree of supersaturation rare earth porcelain grit can be considered as to carrier, and discharge and crystallized on rare earth porcelain grit, the initial stage of the crystallization has packet
Phenomenon is covered, but since the quality of initial stage crystallization is than more loose, and rare earth porcelain grit is in continuous shuttling movement, in solution
During washing away, rubbing, it will soon fall off from rare earth porcelain grit particle surface, and the saturation degree of solution is opposite, and
Part, the crystallization to fall off can touch relatively undersaturated solvent portions and dissolve in again wherein, realize antiscale.Another party
Face, rare earth porcelain grit can form souring to inside pipe wall in cyclic motion process, that is, take away on inside pipe wall because process stream is released
The crystallization of the degree of supersaturation and formation put avoids the crystallization continued growth on inside pipe wall, and scaled for inside pipe wall
Part is washed away, and scale removal is completed.
When the rare earth porcelain grit selects the particle size of a diameter of 0.5~1.5mm, ensure effectively to wash away tube wall offer
While, it is possible to provide enough circulations, and identify convenient for the degree of supersaturation of solution and coat crystallization.In hot solution to be changed
When given volume, with increasing for the rare earth porcelain grit amount, antiscale, scale removal effect are incremented by, but under the mobility meeting gradually of solution
Drop, and the volume ratio of the rare earth porcelain grit and hot solution to be changed is 1:9~1:It is to obtain preferable antiscale, scale removal effect when 19
Take into account the preferred section of preferable solution mobility.
Hot solution to be changed is by taking sodium-chloride water solution as an example, the antiscale of rare earth porcelain grit, scale removal effect such as 3 institute of Examples 1 to 3
Show.
Embodiment 1, when rare earth porcelain grit volume ratio is 5%, and sodium-chloride water solution volume ratio is 95%, by the time 24
After hour, fouling rate is 5g/ (m2H), after 48 hours time, fouling rate is 3g/ (m2H), by 96 hours time
Afterwards, fouling rate is 1.6g/ (m2·h)。
Embodiment 2, when rare earth porcelain grit volume ratio is 8%, and sodium-chloride water solution volume ratio is 92%, by the time 24
After hour, fouling rate is 4g/ (m2H), after 48 hours time, fouling rate is 2.2g/ (m2H), small by the time 96
Shi Hou, fouling rate are 1.2g/ (m2·h)。
Embodiment 3, when rare earth porcelain grit volume ratio is 10%, and sodium-chloride water solution volume ratio is 90%, by the time 24
After hour, fouling rate is 3.8g/ (m2H), after 48 hours time, fouling rate is 2.1g/ (m2H), by the time 96
After hour, fouling rate is 1.1g/ (m2·h)。
Hot solution to be changed is by taking aqueous sodium persulfate solution as an example, the antiscale of rare earth porcelain grit, scale removal effect such as 4~6 institute of embodiment
Show.
Embodiment 4, when rare earth porcelain grit volume ratio is 5%, and aqueous sodium persulfate solution volume ratio is 95%, by the time 24
After hour, fouling rate is 4g/ (m2H), after 48 hours time, fouling rate is 2.5g/ (m2H), small by the time 96
Shi Hou, fouling rate are 1.3g/ (m2·h)。
Embodiment 5, when rare earth porcelain grit volume ratio is 8%, and aqueous sodium persulfate solution volume ratio is 92%, by the time 24
After hour, fouling rate is 3.5g/ (m2H), after 48 hours time, fouling rate is 1.8g/ (m2H), by the time 96
After hour, fouling rate is 1.1g/ (m2·h)。
Embodiment 6, when rare earth porcelain grit volume ratio is 10%, and aqueous sodium persulfate solution volume ratio is 90%, by the time 24
After hour, fouling rate is 3.3g/ (m2H), after 48 hours time, fouling rate is 1.6g/ (m2H), by the time 96
After hour, fouling rate is 0.9g/ (m2·h)。
By Examples 1 to 6 as it can be seen that either sodium-chloride water solution or aqueous sodium persulfate solution, participate in rare earth porcelain grit
Afterwards, the fouling rate of solution is generally relatively low, and over time, and fouling rate continuously decreases, and finally tends to remain at one
Relatively low level, the physical oil production of rare earth porcelain grit, scale removal effect have some idea of.
Using the antiscale of rare earth porcelain grit, the comparison of scale removal method and common scale remover, antisludging agent, as shown in table 1：
Table 1
The present embodiment provides a kind of rare earth porcelain grits to the application in terms of non-strong base solution antiscale, scale removal.
The rare earth porcelain grit is existing conventional material on the market, is readily available in the market.Rare earth porcelain grit is by porous pottery
Porcelain raw material admixture rare earths material is refined to be formed, and appearance white, quality is hard, and particle is uniform, and micropore is flourishing, and porosity is big, circularity
It is full, there is extremely strong filtering adsorption capacity, high intensity, lower resistance, corrosion-resistant, non-toxic, regeneration is simple, service life is long
The features such as, therefore it is used as filtrate, it is widely used in the different industries such as medicine, chemical industry, oil, electric power, plating, papermaking, wine brewing not
In connatural sewage, tap water, industrial water processing.Currently, rare earth porcelain grit is also only used as filtrate.The master of rare earth porcelain grit
Want performance indicator as shown in table 2：
Table 2
The specific implementation mode of present invention described above, is not intended to limit the scope of the present invention..Any basis
The various other corresponding changes and deformation that the technical concept of the present invention is made, should be included in the claims in the present invention
Protection domain.
Claims (5)
1. a kind of antiscale using rare earth porcelain grit to non-strong base solution, descaling method, include the following steps：
Rare earth porcelain grit is injected in hot solution to be changed, and flows and mix with hot solution to be changed by step 1.
2. a kind of antiscale using rare earth porcelain grit to non-strong base solution according to claim 1, descaling method, feature exist
In：Further include,
Step 2 filters out the rare earth porcelain grit in solution after exchanging heat；
Step 3 repeats step 1 and step 2.
3. a kind of antiscale using rare earth porcelain grit to non-strong base solution according to claim 1 or 2, descaling method, special
Sign is：The volume ratio of the rare earth porcelain grit and hot solution to be changed is 1:9~19.
4. a kind of antiscale using rare earth porcelain grit to non-strong base solution according to claim 1 or 2, descaling method, special
Sign is：The particle diameter of the rare earth porcelain grit is 0.5~1.5mm.
5. a kind of rare earth porcelain grit is to the application in terms of non-strong base solution antiscale, scale removal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810117653.6A CN108398047A (en) | 2018-02-06 | 2018-02-06 | A kind of antiscale using rare earth porcelain grit to non-strong base solution, descaling method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810117653.6A CN108398047A (en) | 2018-02-06 | 2018-02-06 | A kind of antiscale using rare earth porcelain grit to non-strong base solution, descaling method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201132801Y (en) * | 2007-12-06 | 2008-10-15 | 中国石油化工股份有限公司江苏油田分公司试采二厂 | Physical scale-borer |
| CN102032835A (en) * | 2010-12-22 | 2011-04-27 | 南京中电联环保股份有限公司 | Surface anti-scaling method for evaporator for brine |
| CN102641601A (en) * | 2011-02-16 | 2012-08-22 | 俞天翔 | In-tube auto-cleaning antiscale falling-film evaporation device |
| CN102901396A (en) * | 2012-10-15 | 2013-01-30 | 江苏中圣高科技产业有限公司 | Method for strengthening heat transfer and preventing scaling by multiphase flow collaborative seed crystal |
| CN103893981A (en) * | 2012-12-31 | 2014-07-02 | 天津中科化工工程设计有限公司 | Heat-transmission concentration device with online antiscaling and descaling properties and operation method thereof |
| CN205759823U (en) * | 2016-05-12 | 2016-12-07 | 江阴市江中设备制造有限公司 | Non-scaling heats assembly, the evaporated crystallization device comprising it |
-
2018
- 2018-02-06 CN CN201810117653.6A patent/CN108398047A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201132801Y (en) * | 2007-12-06 | 2008-10-15 | 中国石油化工股份有限公司江苏油田分公司试采二厂 | Physical scale-borer |
| CN102032835A (en) * | 2010-12-22 | 2011-04-27 | 南京中电联环保股份有限公司 | Surface anti-scaling method for evaporator for brine |
| CN102641601A (en) * | 2011-02-16 | 2012-08-22 | 俞天翔 | In-tube auto-cleaning antiscale falling-film evaporation device |
| CN102901396A (en) * | 2012-10-15 | 2013-01-30 | 江苏中圣高科技产业有限公司 | Method for strengthening heat transfer and preventing scaling by multiphase flow collaborative seed crystal |
| CN103893981A (en) * | 2012-12-31 | 2014-07-02 | 天津中科化工工程设计有限公司 | Heat-transmission concentration device with online antiscaling and descaling properties and operation method thereof |
| CN205759823U (en) * | 2016-05-12 | 2016-12-07 | 江阴市江中设备制造有限公司 | Non-scaling heats assembly, the evaporated crystallization device comprising it |
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