CN103542766A - Coating on heat exchange sheet of heat exchange device and method for removing dirt - Google Patents
Coating on heat exchange sheet of heat exchange device and method for removing dirt Download PDFInfo
- Publication number
- CN103542766A CN103542766A CN201210390828.3A CN201210390828A CN103542766A CN 103542766 A CN103542766 A CN 103542766A CN 201210390828 A CN201210390828 A CN 201210390828A CN 103542766 A CN103542766 A CN 103542766A
- Authority
- CN
- China
- Prior art keywords
- coating
- heat
- heat exchanger
- exchanger fin
- dirt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
This invention discloses a coating on heat exchange sheet of a heat exchange device and a method for removing dirt, which can resolves the problem that the dirt is easily formed and is not easily removed or is only washed by a machine. The technical scheme is that the coating on the heat exchange sheet of the heat exchange device has the heat exchange sheet which is the heat exchange sheet of the gas-gas heat exchange device in the FDG of the heat power station. The coating is constituted by at least one kind of hydrophobe molecule /or at least one surfactants. Furthermore, the coating average weight per area is in a range of 0.001-10000g/m2. The coating discloses by the invention prevent the dirt formed on the surface from adhering to the heat exchange sheet so as to achieve easy washing or online washing.
Description
Technical field
The invention relates to and reduce fouling in material formation and a kind of method of removing the fouling on gas-gas heat-exchanger rig of the adhesion of gas-gas heat-exchanger rig.
Background technology
The flue gas desulfur device heat power station in worldwide is widely used.This device is removed the sulfur dioxide in flue gas, to reduce its discharge in atmosphere.In concrete operations, the flue gas that coal combustion produces is by the absorption tower of a lime or lime stone, and the sulfur dioxide in flue gas is absorbed by lime or lime stone, and clean flue gas is discharged.
In current most of desulfurizer, have gas-gas heat-exchanger rig (english abbreviation GGH), this heat-exchanger rig carries out heat exchange low-temperature flue gas after entering the former flue gas of high temperature before absorption tower and desulfurization desulfurization out later, and flue gas after low-temp desulfurization is heated up.The height that the effect heating up is to allow the flue gas that ejects from chimney rise is higher, thereby reduces the formation of gypsum rain.In addition, flue gas cool-down before desulfurization is conducive to improve to the operating efficiency of desulfuration absorbing tower, because operating efficiency is higher at low temperatures on absorption tower.This heat-exchanger rig has great surface area, is disc in the cylindric inner rotation of a sealing.Disk is divided into two parts, and a part is at the low-temperature space (flue gas after desulfurization) of high humidity, and a part is in the little high-temperature region of humidity.This heat-exchanger rig often can be blocked, and the chemical substance resulting in blockage has calcium carbonate, calcium sulfate, calcium sulfite, alumino-silicate etc., the residual calcium carbonate granule that the ash content of these materials after from coal combustion or come from come in from flue gas band after desulfurization.Owing to carrying the wet of solid constituent and the alternately heat exchange on the heat exchanger fin of heat-exchanger rig of dry air-flow, heat exchanger fin can constantly deposit many black dirts, and the composition of black dirt is exactly calcium carbonate, iron oxide, calcium sulfate, calcium sulfite, alumino-silicate etc.Long-pending being accumulated to of black dirt to a certain degree will be caused the obstruction of heat-exchanger rig.Once heat-exchanger rig stops up, the power plant frequent stop cleaning of having to, whole cleaning process is not only time-consuming but also damage heat-exchanger rig.Often first use chemical agent that dirty bull pine is soft, then with 100-400 atmospheric high pressure water washing, hard scale is rinsed from heat exchanger fin.Water under high pressure heat exchanging device more than 200kg has infringement, once heat exchanger fin occurs to change in damage, is expensive, takes a lot of work and time-consuming process.And the more important thing is; above cleaning method must be shut down heat-exchanger rig can carry out; because this soaking and washing method need to keep black dirt to soak moistening a period of time in cleaning liquid; and the online temperature of heat-exchanger rig more than at least 80 ℃ non-stop-machine time; and both sides wind speed is very large; the moisture of cleaning fluid is understood the infiltration of evaporating rapidly and cannot keep black dirt, and on-line cleaning cannot be carried out.Therefore, be badly in need of a kind of easy method and remove the fouling on heat-exchanger rig heat exchanger fin.
Summary of the invention
The invention provides a kind of method that is coated in coating on heat-exchanger rig heat exchanger fin and removes fouling, it can solve the easy fouling that prior art exists, and fouling is easy cleaning not, and can only stop cleaning etc. problem.
In order to solve the problems of the technologies described above, technical scheme of the present invention is, a kind of coating being coated on heat-exchanger rig heat exchanger fin, described heat exchanger fin is the heat exchanger fin on the gas-to-gas heat exchanger in the flue gas desulfur device of heat power station, described coating comprises molecule and/or a kind of surfactant of at least one hydrophobic, and the average weight of the coating in unit are is at 0.001-10000g/m
2.
Coating average weight refers to the average weight of coating active principle, and heat exchanger fin is coated coated with rear, and under heat-exchanger rig normal working temperature, 1 hour Hou， unit's heat exchanger fin apparent surface is amassed the weight increasing because of coating active principle.Active principle is for volatile solvent, for example the emulsification together with water of high boiling mineral oil is used as to coated substance later, water is wherein exactly solvent, do not belong to active principle, because the water capacity is easily volatilized under heat-exchanger rig operating temperature, and the mineral oil of higher boiling (being greater than 150 ℃) belongs to active principle.
Described surfactant is a kind of nonionic surface active agent, and this molecule has at least one chain that includes ethyoxyl or propoxyl group, and has at least one simultaneously and contain fragrance or the aliphatic group of straight chain.
The HLB index of described surfactant is less than 16.
The HLB index of described surfactant is less than 5.
Described surfactant is the polyethylene glycol of molecular weight between 100-10000000, or the APEO of molecular weight between 100-10000000.
Described hydrophobic molecule is to comprise one or more of following molecule, aliphatic acid, fat oil, vegetable oil, animal tallow oil, plants essential oil, vegetable oil, silicone oil, coal tar, mineral oil, solvent naphtha, benzinum.
The solubility of described hydrophobic molecule in water is less than the every 100g water of 5g, is preferably less than the every 100g water of 1g.
One or more that described surfactant molecule contains following functional group: straight chained alkyl, branched alkyl, aromatic radical, halogen substituted straight chain alkyl, halogen replace branched alkyl, halogen substituted aromatic base, carboxyl, sulfonic group, phosphate, sulfuric ester, organophosphor, organic amino group, organic quaternary ammonium salt.
A sweep-out method of removing dirt on heat-exchanger rig heat exchanger fin, described sweep-out method comprises the following steps:
A. clean or had on dirty heat exchanger fin spraying or watered pouring, or atomizing spray last layer coating, described coating comprises molecule and/or a kind of surfactant of at least one hydrophobic, the average weight of the coating in unit are is at 0.05g-2000g/m
2, described coating makes the generation dirt in coating can not secure adhesion;
B. allow follow-up dirt deposition on the cated heat exchanger fin of tool, deposit thickness is less than 100g/cm
2, then,
C. use compressed air, or steam, or vibration of ultrasonic wave, or pressure is processed and is made it loosening and dirt is washed away from heat exchanger fin dirt at a water more than atmospheric pressure.
The deposit thickness of dirt is preferably less than 10g/cm
2in time, starts to remove.
Described sweep-out method is applied in described heat-exchanger rig and does not shut down on-line operation state or shut down not running status.
The invention relates to and reduce fouling in material formation and a kind of method of removing the fouling on gas-gas heat-exchanger rig of the adhesion of gas-gas heat-exchanger rig.
As technical scheme of the present invention, layer of hydrophobic molecule can be coated in to heat-exchanger rig heat exchanger fin surface.This molecule has reduced the bonding force between black dirt and heat-exchanger rig heat exchanger fin, thereby it is not firm that black dirt is adhered to, and is easy to desorption from heat exchanger fin and gets off.Desorption mode can be selected high, normal, basic setting-out, or high steam, or compressed air etc.Preferred pressure is at the atmospheric mesolow water of 50-100.This coating need to have the covering of certain minimum thickness, so just can make surface hydrophobic substantially.From coat weight per unit area, say, need 0.001g to 10000g/m
2, preferably 0.05g is to 2000g/m
2.Although coating is continuous continual uniform fold preferably, inhomogeneous covering also can reduce dirty secure adhesion to a certain extent.Uniform fold preferably.Secure adhesion refers to and at 10 atmospheric pressure, cannot make under with the flushing water of downforce dirt because of flushing desorption.Such dirt is called firm dirt.The quality that depends on heat exchanger fin surface enamel, is greater than 100 atmospheric pressure or press waters more than 200 atmospheric pressure also can be used.The general water of mesolow power that uses in order to protect enamel to tend to.
The definition in the present invention of hydrophobic molecule refers to that the solubility of the aqueous solution of this molecule is lower than the every 100g water of 5g.Hydrophobicity molecule can be selected from following molecule, aliphatic acid, fat oil, vegetable oil, animal tallow oil, plants essential oil, vegetable oil, silicone oil, mineral oil, solvent naphtha, benzinum, and all kinds of petrochemical industry or the derivative oil of coal.The effect of the biochemical key of vitrified enamel on black dirt composition and heat-exchanger rig heat exchanger fin surface of substantially getting along well of these molecules, thus stop dirt in the adhesion on heat exchanger fin surface.The combination of above molecule also can be used the composition of making coatings.Because the hot-side temperature of heat-exchanger rig is higher, preferably the boiling point of hydrophobic molecule is greater than 120 ℃.As technical scheme of the present invention, surfactant molecule can be replaced to hydrophobic molecule, or surfactant molecule is used together with hydrophobic molecule.The hydrophilic hydrophobic balance index (HLB value) of surfactant is preferably below 16, most preferably below 5.0.For example, many ionics and nonionic molecule can be used, the Triton DF12 of Tao Shi for example, DF-16, DF-20, Tergitol L-XX series, polymerization ethyoxyl-isopropoxy activating agent (EO-PO), the Pluronic series activating agent of BASF (BASF) company, Tao Shi Tergitol NP series (alkane phenolic group polymeric oxygen vinethene series), the alkyl polymeric oxygen vinethene of straight chain or side chain, polyethylene glycol or the APEO of molecular weight between 100 to 10000000.The representative of the surfactant of anionic is alkyl benzene sulphonate or alkylbenzenesulfonate, alkyl sulfonic acid or alkylsulfonate, carboxylic acid or carboxylate, the organic phosphorus compound of the alkyl that contains straight chain or side chain or phosphate, the organic phosphorus compound that contains aromatic group or phosphate.The representative of cationic surfactant is organic amine and quaternary ammonium salt.Amphoteric surfactant (Zwitterionic) be can use in addition, an anionic group and a cation group on a molecule, except hydrophobic chain, also included.The surfactant molecule of the aromatic group that the branched alkyl that the straight chained alkyl that contains halogen replacement or halogen replace or halogen replace also can be used as coating molecule and uses.
As the special case of surfactant, the HLB of polyethylene glycol or APEO is greater than 16, and still, due to the existence of ethyoxyl, the characteristic surfactant-like under its high temperature, is the surfactant under the present invention defines, and can be used as coating material of the present invention.
The present invention for dirty composition comprise following one or more, flue gas puts through firepower the dirt that power plant soot and desulphurization system are brought, and comprises calcium sulfate, calcium sulphate dihydrate, half-H 2 O calcium sulphate, calcium silicates, ca aluminosilicate, iron oxide, calcium carbonate, calcium bicarbonate, calcium sulfite, calcium bisulfite, magnesium sulfite, magnesium bisulfite, magnesium silicate, magnesium carbonate, magnesium bicarbonate, magnesium sulfite, magnesium bisulfite, aluminium oxide, aluminium hydroxide, iron oxide, metal phosphate etc.Other similar inorganic scales also can stop it at heat exchange surface, to adhere to by this method, at this, differ and one have given an example.
Thereby the invention still further relates to a kind of dirt that stops and at heat exchange surface, adhere to the method that can remove easily, the method consists of following steps:
A. by the method for spray or drip washing, totally or there iing the heat exchanger fin surface of dirt deposition to apply one deck coating, then
B. allow follow-up dirt deposition on cated heat exchanger fin, deposit thickness is less than 100g/cm
2, then,
C. use compressed air, or steam, or pressure is processed and is made it loosening and dirt is washed away from heat exchanger fin dirt at a water more than atmospheric pressure.
The method of this scale removal molecule used with consumption with the same above.Merit attention and be; because clean again after soaking a period of time; can clean at hot operation state, the inventive method can be used under online non-stop-machine situation completely simultaneously, and heat-exchanger rig can on-line cleaning in the situation that of rotation flue gas turnover simultaneously heat-exchanger rig in other words.This on-line cleaning mode can greatly reduce the stop cleaning time of power plant, more produces economic benefit ，Rang power plant and sends out electricity more, has avoided the equipment loss of switch boiler, the expense of simultaneously having saved off-line cleaning frequency.Certainly, this method also can be used after shutting down, for example, after dirt runs up to certain thickness, heat-exchanger rig is quit work to rinse.Optimization model of the present invention is stop cleaning not online.
The specific embodiment
Embodiment
The composition of heat-exchanger rig scale inhibition coated substance is listed in following table.
TRITON DF12 in upper table is a kind of Tao Shi aliphatic chain APEO.
Mineral oil in upper table is that petrochemical industry extracts the higher boiling oil that the later dregs of fuel oil refine generation again.
Simulate the material composition of heat-exchanger rig fouling and on heat-exchanger rig heat exchanger fin, simulate the method for fouling.
Typical heat-exchanger rig black dirt has the gypsum composition ash content of holding concurrently.General heat-exchanger rig fouling be take gypsum composition as main, and the ash content of alumino-silicate is auxiliary.Be below composition and the method for simulation black dirt: with 50 parts of water, 30 parts of cement flours, 20 parts of dead plasters mix, form paste, be then coated in clean heat-exchanger rig heat exchanger fin surface.This mixture is coated in the lip-deep region of heat-exchanger rig heat exchanger fin of a 20cm * 20cm (this heat exchanger fin size is at 40cm * 60cm, and surface scribbles enamel protective layer).Before applying simulation black dirt, first in the region of 20cm * 20cm, apply the composition in embodiment 1-5, unit are coated weight is controlled at 20g/m
2, namely there is 0.8g left and right on 20cm * 20cm area.What painting method was used is atomizing.100 ℃ of bakings 10 minutes in baking oven after having sprayed, and then apply simulation black dirt, coating method is to smear gently with glass stirring rod, the about 1-2mm of smearing thickness.Simulation black dirt after smearing at room temperature solidifies and tests for 5 days later again.As a comparison, get another clean heat exchanger fin, do not do scale inhibition coating and process, directly apply simulation black dirt.
Scale inhibition coating is rinsed the impact evaluation of black dirt effect to water.
Approximately 10 atmospheric pressure of flushing water pressure, the about 3mm of water column opening.Washing time continued for approximately 10 seconds.Result is as following table:
| Composition | Result |
| Embodiment 1 | 100% rinses well |
| Embodiment 2 | 100% rinses well |
| Embodiment 3 | 100% rinses well |
| Embodiment 4 | 100% rinses well |
| Embodiment 5 | Being greater than 80% rinses well |
| Contrast blank (without scale inhibition coating) | Be less than 20% black dirt desorption |
By above several examples, can find out that oils, surfactant, polyethylene glycol have the effect that well prevents that black dirt from adhering to.And contrast blank only has edge to be seldom partly rinsed totally, most of area still simulated black dirt and covers.By above experiment, fully show, coating of the present invention can make the dirt generating substantially not adhere to completely thereon, thereby reaches the object of easy cleaning and on-line cleaning.
Sweep-out method of the present invention comprises the following steps:
A. clean or had on dirty heat exchanger fin spraying or watered pouring, or atomizing spray last layer coating, described coating comprises molecule and/or a kind of surfactant of at least one hydrophobic, the average weight of the coating in unit are is at 0.05g-2000g/m
2, described coating makes the generation dirt in coating can not secure adhesion;
B. allow follow-up dirt deposition on the cated heat exchanger fin of tool, deposit thickness is less than 100g/cm
2, then,
C. use compressed air, or steam, or vibration of ultrasonic wave, or pressure is processed and is made it loosening and dirt is washed away from heat exchanger fin dirt at a water more than atmospheric pressure.
Claims (10)
1. the coating being coated on heat-exchanger rig heat exchanger fin, it is characterized in that: described heat exchanger fin is the heat exchanger fin on the gas-to-gas heat exchanger in the flue gas desulfur device of heat power station, described coating comprises molecule and/or a kind of surfactant of at least one hydrophobic, and the average weight of the coating in unit are is at 0.001-10000g/m
2.
2. a kind of coating being coated on heat-exchanger rig heat exchanger fin according to claim 1, it is characterized in that: described surfactant is a kind of nonionic surface active agent, this molecule has at least one chain that includes ethyoxyl or propoxyl group, and has at least one simultaneously and contain fragrance or the aliphatic group of straight chain.
3. a kind of coating being coated on heat-exchanger rig heat exchanger fin according to claim 1 and 2, is characterized in that: the HLB index of described surfactant is less than 16.
4. a kind of coating being coated on heat-exchanger rig heat exchanger fin according to claim 1 and 2, is characterized in that: the HLB index of described surfactant is less than 5.
5. a kind of coating being coated on heat-exchanger rig heat exchanger fin according to claim 1, it is characterized in that: described surfactant is the polyethylene glycol of molecular weight between 100-10000000, or the APEO of molecular weight between 100-10000000.
6. a kind of coating being coated on heat-exchanger rig heat exchanger fin according to claim 1, it is characterized in that: one or more that described surfactant molecule contains following functional group: straight chained alkyl, branched alkyl, aromatic radical, halogen substituted straight chain alkyl, halogen replace branched alkyl, halogen substituted aromatic base, carboxyl, sulfonic group, phosphate, sulfuric ester, organophosphor, organic amino group, organic quaternary ammonium salt.
7. a kind of coating being coated on heat-exchanger rig heat exchanger fin according to claim 1, it is characterized in that: described hydrophobic molecule is to comprise one or more of following molecule, aliphatic acid, fat oil, vegetable oil, animal tallow oil, plants essential oil, vegetable oil, silicone oil, coal tar, mineral oil, solvent naphtha, benzinum.
8. a kind of coating being coated on heat-exchanger rig heat exchanger fin according to claim 1, is characterized in that: the solubility of described hydrophobic molecule in water is less than the every 100g water of 5g, is preferably less than the every 100g water of 1g.
9. a sweep-out method of removing dirt on heat-exchanger rig heat exchanger fin, is characterized in that, described sweep-out method comprises the following steps:
A. clean or had on dirty heat exchanger fin spraying or watered pouring, or atomizing spray last layer coating, described coating comprises molecule and/or a kind of surfactant of at least one hydrophobic, and the average weight of the coating in unit are is at 0.05g-2000g/m
2, described coating makes the generation dirt in coating can not secure adhesion;
B. allow follow-up dirt deposition on the cated heat exchanger fin of tool, deposit thickness is less than 100g/cm
2, then,
C. use compressed air, or steam, or vibration of ultrasonic wave, or pressure is processed and is made it loosening and dirt is washed away from heat exchanger fin dirt at a water more than atmospheric pressure.
10. sweep-out method according to claim 9, is characterized in that, the deposit thickness of dirt is preferably less than 10g/cm
2in time, starts to remove, and described sweep-out method is applied in described heat-exchanger rig and does not shut down on-line operation state or shut down not running status.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261670910P | 2012-07-12 | 2012-07-12 | |
| US61/670910 | 2012-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103542766A true CN103542766A (en) | 2014-01-29 |
Family
ID=49966464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210390828.3A Pending CN103542766A (en) | 2012-07-12 | 2012-09-29 | Coating on heat exchange sheet of heat exchange device and method for removing dirt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103542766A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113369263A (en) * | 2021-05-24 | 2021-09-10 | 龙佰四川钛业有限公司 | Method for removing calcium sulfate scale |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1077474A (en) * | 1993-04-19 | 1993-10-20 | 武汉恒进通用电气公司 | Water repelling anti-fouling flash color paint |
| CN1654562A (en) * | 2005-01-04 | 2005-08-17 | 华南理工大学 | Steaming type anti-corrosion anti-scale heat conducting coating on surface of condenser coil pipe |
| CN1827656A (en) * | 2004-11-01 | 2006-09-06 | 国家淀粉及化学投资控股公司 | Hydrophobically modified polymers |
| CN101501437A (en) * | 2006-06-23 | 2009-08-05 | 埃克森美孚研究工程公司 | Reduction of fouling in heat exchangers |
| CN101545739A (en) * | 2008-03-28 | 2009-09-30 | 三菱电机株式会社 | Coating composition, heat exchanger, and air-conditioner |
| CN101857770A (en) * | 2010-05-27 | 2010-10-13 | 北京航空航天大学 | Hydrophobic coating material for geothermal water conveying metal pipe and one-step film forming method for preparing hydrophobic coating |
-
2012
- 2012-09-29 CN CN201210390828.3A patent/CN103542766A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1077474A (en) * | 1993-04-19 | 1993-10-20 | 武汉恒进通用电气公司 | Water repelling anti-fouling flash color paint |
| CN1827656A (en) * | 2004-11-01 | 2006-09-06 | 国家淀粉及化学投资控股公司 | Hydrophobically modified polymers |
| CN1654562A (en) * | 2005-01-04 | 2005-08-17 | 华南理工大学 | Steaming type anti-corrosion anti-scale heat conducting coating on surface of condenser coil pipe |
| CN101501437A (en) * | 2006-06-23 | 2009-08-05 | 埃克森美孚研究工程公司 | Reduction of fouling in heat exchangers |
| CN101545739A (en) * | 2008-03-28 | 2009-09-30 | 三菱电机株式会社 | Coating composition, heat exchanger, and air-conditioner |
| CN101857770A (en) * | 2010-05-27 | 2010-10-13 | 北京航空航天大学 | Hydrophobic coating material for geothermal water conveying metal pipe and one-step film forming method for preparing hydrophobic coating |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113369263A (en) * | 2021-05-24 | 2021-09-10 | 龙佰四川钛业有限公司 | Method for removing calcium sulfate scale |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101537310A (en) | Semidry premodulation limestone-gypsum flue gas desulfurizing method | |
| CN107327863A (en) | Suitable for the flue gas purification system and flue gas purifying method of gas turbine | |
| CN107282381A (en) | Surface treatment method before launching tube guide rail thermal spraying | |
| CN103542766A (en) | Coating on heat exchange sheet of heat exchange device and method for removing dirt | |
| CN201586619U (en) | Treatment steam/waste liquid recovery device before coating | |
| CN106076643A (en) | A kind of regular polygon honeycomb fashion wet dust collection pole plate cleans device | |
| CN101914416B (en) | Water-based neutral cleaning agent and application thereof in cleaning GGH heat exchange component | |
| CN204042943U (en) | Desulfurization system for thermal power plant | |
| CN205127717U (en) | Supporting sea water desulfurization system of coal -fired power unit | |
| CN208088010U (en) | Papermaking drying portion exhaust air deodorization takes off bletilla afterheat utilizing system | |
| CN108786388A (en) | A kind of removing method of wet type desulfurizing flue gas water mist | |
| CN210845774U (en) | Desulfurization and denitrification flue gas whitening system | |
| CN204193712U (en) | A kind of dust-removing and desulfurizing integrated device processing medium small boiler, kiln gas | |
| CN203017937U (en) | Anti-blocking device of stepping type defogger | |
| CN106424019A (en) | Dry ice cleaning machine | |
| CN204421041U (en) | A kind of degree of depth synergy treating apparatus of desulfurizing tower exiting flue gas | |
| CN210145833U (en) | White smoke plume remove device with thick liquid cooling tray | |
| CN111659231B (en) | Flue gas desulfurization and fog dispersal device | |
| CN203458971U (en) | Novel desulfurization tower | |
| CN202803086U (en) | Online cleaning device for desulfurization flue gas heat exchanger | |
| CN201688426U (en) | High-temperature flue gas quenching chamber | |
| CN101653693A (en) | Energy-saving emission-reducing desulfurization and dust removal process for flue gas of coal-fired furnace | |
| CN110130139A (en) | Papermaking drying portion's exhaust air deodorization takes off bletilla waste heat utilization equipment | |
| CN205549900U (en) | Novel efficient demister | |
| CN213537612U (en) | Concentrated water crystallization unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140129 |