form:
This product uses inorganic silicon modified resin grafted IPN polymer as film forming solution nanometer Microsilica , silicon carbide, boron nitride, fine alumina, graphite, superfine zinc oxide , titanium oxide Micropowder Zirconia, etc. coating The working principle of interaction and synergistic effect of each component makes the coating have good comprehensive properties such as low surface energy, high corrosion resistance, high hardness, and strong adhesion with the substrate.
mechanism:
The interpenetrating polymer network (IPN) based on inorganic polymer is used as the film-forming material, and the silicon containing inorganic polymer in the solution is used as the main chain. The polymer modified resin of the agricultural production system is grafted at high temperature to obtain a multi block grafting inorganic agricultural production system chelating polymer composed of alternating arrangements. It has good film-forming property, good adhesion, smooth and self-cleaning coating, and high temperature resistance, Compact film formation reduces dielectric loss rate.
Paint solid pigment , The wear-resistant ceramic functional filler is made under high temperature sealing to improve the hardness of the coating, high wear resistance, corrosion resistance, high temperature resistance, impact resistance and good ductility.
Inorganic ceramic fiber is used in the coating to increase the internal cross strength of the coating and enhance the impact resistance of the coating. The paint is also matched with appropriate pigments, solvents, additives and added with wear-resistant enhancer..
Performance:
ZS-1041 The temperature resistance range of flue gas anti-corrosion coating can reach seven hundred and fifty ℃, which can be used for a long time six hundred ℃ for normal use. The coating can withstand long-term acid immersion, alkali immersion and NaCl Immersion in solution has integrated impermeability and corrosion resistance, which can be used for various possible corrosion of equipment. The product has good wear resistance and impact resistance. In addition, and ZS-1042 It can be used together to increase wear resistance two Times more.
ZS-1041 Non combustible and fireproof smoke anti-corrosion coating; During construction, if the back of the metal substrate is welded, the front coating has an extension 1cm The area will become brittle, so it needs to be polished locally and repainted. The paint is inorganic - High temperature chelating resin in agricultural production system, the content of components in agricultural production system is low, so the coating is inorganic inert after film forming, with good aging resistance, and the measured index is higher than that in the standard 500h 。
Parameters:
Appearance: black; Composition: two-component; Main agent (slurry): curing agent (liquid) =9:1
Density: 1.6g/cm3 ； Tmax ： seven hundred ℃
Film hardness: 5H GB/T 6739-2006
adhesion one level GB/T 9286-1998
Sand falling test 3.0L/um GB/T23988-2009
Acid resistance 30d 5%H2SO4 No change in paint film GB/T 9274-1988
Alkali resistance 30d 5%NaOH No change in paint film GB/T 9274-1988
Salt fog resistance 30d 5%NaCL No change in paint film GB/T 9274-1988
Overview of product benefits:
one Long term anti-corrosion: after the agricultural production system polymer is modified by the silicon containing inorganic polymer, the coating can get the multi block copolymer composed of alternating arrangement, forming a two-dimensional network structure state in the coating space, which also forms a point maze form, and the ultra-fine powder oxide, silicon, graphite and other bodies in the coating form a dense interface transition layer in the coating, Under the common action, it effectively prevents the invasion of acid and alkali solution to the matrix. Good corrosion resistance, acid and alkali resistance, and resistance to smoke H2S 、 HF , chloride ion, sulfur dioxide, sulfur trioxide, hydrogen chloride, high-temperature water vapor and other media corrosion, to prevent condensate spot corrosion, stress corrosion, chemical corrosion, potential corrosion, etc.
two Super adhesion, high linear expansion coefficient: Zhisheng Weihua specially made inorganic -- Agricultural production system, modified chelate synthetic membrane, inorganic pigment as filler, chemical bond contained in paint composition --- Hydroxyl（ OH ）It can form a chemical bond with metal ions, and with the help of paint coupling agent, it can form a covalent chain with metal materials. The adhesion between the coating and the base material is good, and the adhesion reaches the first level. The adhesion between the coating and the matrix is strong. The metal oxide nano materials and rare earth oxide ultrafine powders contained in the coating composition help the coating form a dense interface transition layer, so that its comprehensive thermodynamic properties match the matrix ZS-1041 The anticorrosive coating for chimney flue gas also has high flexural resistance and thermal expansion resistance, which can resist the inevitable vibration of the steel chimney in operation despite its reinforcement.
three High temperature resistance: the base material and filler of the flue gas anti-corrosion coating are composed of high temperature resistant inorganic substances, and the long-term heat resistance can reach six hundred ℃, the temperature can reach eight hundred and fifty ℃。
four Wear resistance and smoothness: ceramic functional filler composed of various components can make the coating surface present low surface energy and ultra-low friction coefficient, which can make the tar and the surface in a non wetting state, thus effectively preventing the adhesion of viscous foreign matters in the chimney flue. The mutual cooperation of different materials endows the coating with good wear resistance, smooth anti-corrosion performance, and can resist the high-speed impact of smoke and dust and air flow erosion.
five Good thermal shock resistance: the flue gas temperature is always changing, and the thermal shock resistance of the coating is high. When the flue gas temperature changes, the coating does not fall off, no cracks occur, and the adhesion is good.
six Long service life: the coating has a long service life and good durability. The damaged coating can be easily repaired, and the environment is pure during preparation, coating and coating formation.
Application field:
In industry, all kinds of flue, chimney, desulfurization tower, dust remover, boiler and kiln internal equipment are resistant to high temperature, acid and alkali corrosion, abrasion and dust erosion.
1、 Corrosion prevention of flue gas pipeline:
The flue gas pipe is the flue. The flue gas after combustion will be generated during the heating process of industrial kilns or boilers. The pipe through which the flue gas passes is called the flue. The flue parallel to the ground is called horizontal flue. The flue arranged vertically with the ground is called vertical flue. The untreated flue gas generated by boiler combustion is called the original flue gas, and the flue through which the original flue gas flows is called the original flue gas. The flue gas from the original flue gas after desulfurization, denitrification and dust removal processes is called clean flue gas, and the flue through which the clean flue gas flows is called clean flue gas. The flue directly discharged without desulfurization, denitrification and dust removal process is called bypass flue.
The corrosion of flue gas can be roughly divided into two types: first, high-temperature flue gas corrosion. The corrosion mechanism is similar to high-temperature oxidation corrosion, which makes the metal substrate brittle and peeled layer by layer. Special corrosion ions in the flue gas will further accelerate the corrosion rate. For example, the original flue and tail flue belong to this kind of corrosion. 2、 Low temperature dew point corrosion. Generally, the content of corrosive medium in the flue gas is low. However, due to low temperature, the acid gas condenses into acid, which corrodes the metal at an extremely fast rate, and perforation will occur in a few days in severe cases. For example, most of the clean flue and desulfurized flue have such corrosion.
Zhisheng Weihua Anticorrosion Scheme ：
The base material shall be sandblasted and derusted first, and then coated ZS-1041 Smoke anti-corrosion coating 3-5 It can be sprayed, roller coated and brushed, with a thickness of about 300um OK.
2、 Chimney anti-corrosion:
The main function of chimney is to pull out fire and smoke, exhaust smoke and improve combustion conditions. Chimneys are generally divided into brick chimneys, steel chimneys and reinforced concrete chimneys according to their materials. The flue gas of the power plant is generally subject to denitration, dust removal and desulfurization（ GGH Heating), and then discharged through the chimney. The flue gas treatment of other industries such as chemical plants, cement plants, and steel plants is also very similar. Therefore, the temperature of the chimney is generally low, and most of the chimney flue gas temperatures are forty ℃ to eighty ℃, sulfite, sulfuric acid and hydrochloric acid all form acid liquid together with condensate in this temperature range, which can not ignore the corrosion of the chimney at all. Tears are often seen outside the chimney with poor anti-corrosion.
Chimney smoke can be divided into dry smoke, wet smoke and wet smoke according to temperature and humidity. Classification standard: ① Dry flue gas: humidity <60%RH , temperature ≥ ninety ℃ ② Wet flue gas: humidity ≥ 60%RH ， sixty ℃ ＜ temperature ＜ ninety ℃ ③ Wet flue gas: humidity saturation, temperature ≤ sixty ℃。
For direct flue gas without desulfurization, the temperature of flue gas entering the chimney is one hundred and thirty ℃, some will reach two hundred and eighty ℃, under this condition, the inner wall of the chimney is in a dry state, and there is more dust in the flue gas, which has a certain degree of erosion and abrasion on the chimney. The flue gas corrosion presents a uniform gaseous corrosion. At this time, the coating needs to be resistant to high temperature, abrasion and corrosion, ZS-1041 The flue gas anti-corrosion coating system fully meets these requirements.
Flue gas discharged after wet desulfurization, none GGH The system is heated, and the flue gas temperature is about 40-50 ℃, there is serious condensation on the inner wall of the chimney, and even chimney rain may occur. The acid liquid formed by condensation flows along the chimney wall. At this time, acid dew point corrosion and flowing water erosion corrosion are more prominent, ZS-1041 The permeability resistance and corrosion resistance of smoke anti-corrosion coating can give full play to its performance here.
The discharged flue gas after wet desulfurization GGH Heating, the temperature of flue gas entering the chimney is about eighty At about ℃, there will be slight condensation in the chimney, which may lead to ash deposition on the inner side of the chimney, and the acid liquor will be detained by the ash scale to form more serious acid dew point corrosion under the scale.
Zhisheng Weihua anti-corrosion scheme:
① Steel chimney: the base material shall be sandblasted and derusted before coating ZS-1041 Smoke anti-corrosion coating 3-5 It can be sprayed, roller coated and brushed, and the thickness shall not be less than 300um ；② Brick chimney and steel-concrete chimney: the new chimney shall be cured first twenty-eight More than days, the surface should be basically flat without large holes, and the old chimney should be sandblasted or purged to clean. Brush first ZS-1011 The oil-based transition coating penetrates into the base material as a sealing primer, and then applies ZS-1041 Smoke anti-corrosion coating 3-5 It can be sprayed, roller coated and brushed, and the thickness shall not be less than 300um ；③ For the chimney with high flow rate and large dust, the abrasion is serious, and the coating thickness shall not be less than 500um ；④ For the chimney with low temperature, it shall be properly thickened from top to bottom to lengthen the penetration path of condensed acid when flowing down, and the lower part shall not be less than 500um ；⑤ Under special conditions ZS-1041 And ZS-1042 Composite anti-corrosion process.
3、 Corrosion prevention of desulfurization fan:
Desulfurization fan（ Desulfurization fan ）Also called booster fan（ Booster Fan ） , Is used to overcome FGD The flue gas resistance of the (flue gas desulfurization) device introduces the original flue gas into the desulfurization system and stabilizes the main equipment of the boiler induced draft fan outlet pressure. As the flue gas flows through the original flue and flue gas heat exchanger（ GGH ）, absorption tower, clean flue, baffle door and other resistance equipment, booster fan shall be set to overcome the resistance of the whole desulfurization system equipment. Its operating characteristics are low pressure head, large flow and low speed. In the case of installing desulfurization device, the resistance is large, and the forced draft fan and induced draft fan of boiler cannot overcome FGD So the boiler is installed FGD For the device, desulfurization booster fan shall be installed to overcome the resistance of desulfurization device.
When the flue gas passes through the water curtain in dust removal and desulfurization, the acid gas in the flue gas becomes acidic after being dissolved in water. The flue gas passing through the desulfurization fan carries a large amount of acid water vapor, which makes the booster fan blades in the environment of acid water solution erosion for a long time. The erosion of fan impellers in continuous operation is uniform, which causes rapid corrosion of blade metal plates and greatly shortens the service life. Flue gas contains ash and various corrosive components, such as SO2 、 HCl 、 NO2 And salt spray, and even some flue gas contains hydrofluoric acid strong corrosive gas. In particular, the raw flue gas contains high sulfur, chlorine and nitrate. During the desulfurization process, it has the characteristics of alternating acid and alkali media. Therefore, the inner wall and blades of the desulfurization fan casing are severely corroded, and the requirements for painting anti-corrosion coatings on the desulfurization fan are more stringent.
Zhisheng Weihua anti-corrosion scheme:
The base material shall be sand blasted or manually polished before coating ZS-1041 Smoke anti-corrosion coating 3-5 It can be sprayed, roller coated and brushed, with a thickness of about 300um OK. Under special conditions ZS-1041 And ZS-1042 Composite anti-corrosion process.
Used on desulfurization fan zs-1041 Smoke anti-corrosion coating can greatly reduce corrosion and wear, extend service life, reduce operating costs of enterprises, and ensure safe operation.
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