Desalination tank membrane flexible floating roof main function: to maximize the demineralized water tank outlet demineralized water performance indicators and the inlet demineralized water indicators are consistent, to achieve the purpose of safe production.
The working principle of membrane type flexible floating roof of desalination water tank: to maximize the isolation of desalination water tank in the storage of standby desalination water and contact with the outside air, to avoid the pollution of desalination water by the CO2, SiO2 and other dusts in the air.
Membrane flexible floating roof technology description
In the liquid storage equipment, in order to prevent and reduce the vapor-liquid two-phase interface two-phase material exchange, to prevent the loss of liquid volatilization, often in the storage equipment, the installation of the internal so-called "floating roof" device floats on the surface of the liquid, so that the vapor-liquid two-phase media isolation, thereby achieving Stop and reduce the exchange of two-phase media purpose.
Membrane flexible floating top is a new type of flexible floating top developed by our company, is composed of several layers of monomer membrane, the membrane material for a strong resistance to water vapor permeability, low density, corrosion resistance, impermeable, ductility, good resilience of organic polymer materials. The floating roof has the characteristics of high covering efficiency, easy installation, maintenance-free, long service life, strong adaptability to the shape and structure of the equipment, and low price. The floating roof is suitable for covering liquid in large desalination tanks, concentrated acid tanks and concentrated alkali tanks.
Overview and characteristics of membrane type flexible floating roof
◆? Membrane material with excellent performance
The material of membrane flexible floating roof is improved on the basis of aviation material. The material has low density, good ductility, good resilience, wet resistance factor μ value is more than 4000, has excellent resistance to water vapor permeability, low thermal conductivity, wide range of temperature resistance (-50 ℃ ~ 90 ℃), excellent weather resistance, acid and alkali resistance, 30 years of aging, no deformation, free of maintenance and other characteristics. Membrane material is a long-chain organic polymer synthetic material, the material performance is stable, there will be no dissolution or small molecule precipitation phenomenon in water, acid, alkali and other media, it is very suitable for liquid (water, acid, alkali) storage equipment for the liquid surface covering material.
◆? Coverage of high efficiency, adaptability
Membrane flexible floating roof construction, the membrane area is slightly larger than the surface area of the liquid in the storage equipment, the floating roof around the inner wall of the storage equipment in contact with the part of the flexible membrane body skirt. When the liquid surface in the equipment changes, the flexible membrane body can be changed, and maintain good contact with the inner wall of the equipment to enhance the coverage of the floating roof, the actual coverage efficiency of the floating roof can reach more than 99.5%, for the surface of the irregular storage equipment, or the use of lap welding method of processing of large-scale tanks, the flexible membrane has a good adaptability to change with the shape of the liquid surface to achieve a good sealing status. Seal state. Membrane body is soft, ductility is good, when the liquid level fluctuation up and down, not only to ensure that the membrane and the good contact with the inner wall, but also will not be friction with the inner wall of the equipment, will not damage the internal surface of the storage equipment coating or corrosion-resistant layer.
Membrane flexible floating roof on the shape and structure of the equipment adaptability, it is not only applicable to the widely used vertical cylindrical tanks, but also for horizontal cylindrical, spherical, square and other different shapes of liquid storage equipment is also applicable.
At present, the floating roof has been popularized and applied in the thermal power plant demineralized water storage equipment (vertical cylindrical type), concentrated acid tank (horizontal cylindrical type), concentrated alkali tank (horizontal cylindrical type). Application shows that the application of the floating top of the demineralized water tank, the box of demineralized water in the natural storage conditions for one month, the conductivity of the water quality increased very little, no significant changes, fully meet the power plant demineralized water quality to maintain the demand. Concentrated acid tank using the floating roof, greatly reducing the acid mist out, avoiding the acid concentration and environmental pollution. After adopting the floating roof in the concentrated alkali tank, the lye (sodium hydroxide) covering ball and the respirator on the alkali tank are canceled, which avoids carbon dioxide pollution to the lye, and avoids the occurrence of crystallization of lye due to the increase of sodium carbonate content in the lye.
◆? Simple installation, safe and stable operation
Membrane flexible floating roof is a whole body composed of a single layer of membrane. Floating roof installation is simple and convenient, all
stable, in water, acid, alkali and other media there will be no dissolution or small molecules precipitation phenomenon, is very suitable for liquid (water, acid, alkali) storage equipment for the liquid surface covering materials.
◆? Coverage of high efficiency, adaptability
Membrane flexible floating roof construction, the membrane area is slightly larger than the surface area of the liquid in the storage equipment, the floating roof around the inner wall of the storage equipment in contact with the part of the flexible membrane body skirt. When the liquid surface in the equipment changes, the flexible membrane body can be changed, and maintain good contact with the inner wall of the equipment to enhance the coverage of the floating roof, the actual coverage efficiency of the floating roof can reach more than 99.5%, for the surface of the irregular storage equipment, or the use of lap welding method of processing of large-scale tanks, the flexible membrane has a good adaptability to change with the shape of the liquid surface to achieve a good sealing status. Seal state. Membrane body is soft, ductility is good, when the liquid level fluctuation up and down, not only to ensure that the membrane and the good contact with the inner wall, but also will not be friction with the inner wall of the equipment, will not damage the internal surface of the storage equipment coating or corrosion-resistant layer.
Membrane flexible floating roof on the shape and structure of the equipment adaptability, it is not only applicable to the widely used vertical cylindrical tanks, but also for horizontal cylindrical, spherical, square and other different shapes of liquid storage equipment is also applicable.
At present, the floating roof has been popularized and applied in the thermal power plant demineralized water storage equipment (vertical cylindrical type), concentrated acid tank (horizontal cylindrical type), concentrated alkali tank (horizontal cylindrical type). Application shows that the application of the floating top of the demineralized water tank, the box of demineralized water in the natural storage conditions for one month, the conductivity of the water quality increased very little, no significant changes, fully meet the power plant demineralized water quality to maintain the demand. Concentrated acid tank using the floating roof, greatly reducing the acid mist out, avoiding the acid concentration and environmental pollution. After adopting the floating roof in the concentrated alkali tank, the lye (sodium hydroxide) covering ball and the respirator on the alkali tank are canceled, which avoids carbon dioxide pollution to the lye, and avoids the occurrence of crystallization of lye due to the increase of sodium carbonate content in the lye.
◆? Simple installation, safe and stable operation
Membrane flexible floating roof is a whole body composed of a single layer of membrane. Floating roof installation is simple and convenient, all
stable, in water, acid, alkali and other media there will be no dissolution or small molecules precipitation phenomenon, is very suitable for liquid (water, acid, alkali) storage equipment for the liquid surface covering materials.
◆? Coverage of high efficiency, adaptability
Membrane flexible floating roof construction, the membrane area is slightly larger than the surface area of the liquid in the storage equipment, the floating roof around the inner wall of the storage equipment in contact with the part of the flexible membrane body skirt. When the liquid surface in the equipment changes, the flexible membrane body can be changed, and maintain good contact with the inner wall of the equipment to enhance the coverage of the floating roof, the actual coverage efficiency of the floating roof can reach more than 99.5%, for the surface of the irregular storage equipment, or the use of lap welding method of processing of large-scale tanks, the flexible membrane has a good adaptability to change with the shape of the liquid surface to achieve a good sealing status. Seal state. Membrane body is soft, ductility is good, when the liquid level fluctuation up and down, not only to ensure that the membrane and the good contact with the inner wall, but also will not be friction with the inner wall of the equipment, will not damage the internal surface of the storage equipment coating or corrosion-resistant layer.
Membrane flexible floating roof on the shape and structure of the equipment adaptability, it is not only applicable to the widely used vertical cylindrical tanks, but also for horizontal cylindrical, spherical, square and other different shapes of liquid storage equipment is also applicable.
At present, the floating roof has been popularized and applied in the thermal power plant demineralized water storage equipment (vertical cylindrical type), concentrated acid tank (horizontal cylindrical type), concentrated alkali tank (horizontal cylindrical type). Application shows that the application of the floating top of the demineralized water tank, the box of demineralized water in the natural storage conditions for one month, the conductivity of the water quality increased very little, no significant changes, fully meet the power plant demineralized water quality to maintain the demand. Concentrated acid tank using the floating roof, greatly reducing the acid mist out, avoiding the acid concentration and environmental pollution. After adopting the floating roof in the concentrated alkali tank, the lye (sodium hydroxide) covering ball and the respirator on the alkali tank are canceled, which avoids carbon dioxide pollution to the lye, and avoids the occurrence of crystallization of lye due to the increase of sodium carbonate content in the lye.
◆? Simple installation, safe and stable operation
Membrane flexible floating roof is a whole body composed of a single layer of membrane. Floating roof installation is simple and convenient, all
stable, in water, acid, alkali and other media there will be no dissolution or small molecules precipitation phenomenon, is very suitable for liquid (water, acid, alkali) storage equipment for the liquid surface covering materials.
◆? Coverage of high efficiency, adaptability
Membrane flexible floating roof construction, the membrane area is slightly larger than the surface area of the liquid in the storage equipment, the floating roof around the inner wall of the storage equipment in contact with the part of the flexible membrane body skirt. When the liquid surface in the equipment changes, the flexible membrane body can be changed, and maintain good contact with the inner wall of the equipment to enhance the coverage of the floating roof, the actual coverage efficiency of the floating roof can reach more than 99.5%, for the surface of the irregular storage equipment, or the use of lap welding method of processing of large-scale tanks, the flexible membrane has a good adaptability to change with the shape of the liquid surface to achieve a good sealing status. Seal state. Membrane body is soft, ductility is good, when the liquid level fluctuation up and down, not only to ensure that the membrane and the good contact with the inner wall, but also will not be friction with the inner wall of the equipment, will not damage the internal surface of the storage equipment coating or corrosion-resistant layer.
Membrane flexible floating roof on the shape and structure of the equipment adaptability, it is not only applicable to the widely used vertical cylindrical tanks, but also for horizontal cylindrical, spherical, square and other different shapes of liquid storage equipment is also applicable.
At present, the floating roof has been popularized and applied in the thermal power plant demineralized water storage equipment (vertical cylindrical type), concentrated acid tank (horizontal cylindrical type), concentrated alkali tank (horizontal cylindrical type). Application shows that the application of the floating top of the demineralized water tank, the box of demineralized water in the natural storage conditions for one month, the conductivity of the water quality increased very little, no significant changes, fully meet the power plant demineralized water quality to maintain the demand. Concentrated acid tank using the floating roof, greatly reducing the acid mist out, avoiding the acid concentration and environmental pollution. After adopting the floating roof in the concentrated alkali tank, the lye (sodium hydroxide) covering ball and the respirator on the alkali tank are canceled, which avoids carbon dioxide pollution to the lye, and avoids the occurrence of crystallization of lye due to the increase of sodium carbonate content in the lye.
◆? Simple installation, safe and stable operation
Membrane flexible floating roof is a whole body composed of a single layer of membrane. Floating roof installation is simple and convenient, all components are transported in from the equipment manhole door and installed at the bottom of the equipment, the installation does not require power cutting, welding, lifting and other equipment, no bracket. The floating roof is suitable for any size of liquid storage equipment, when the equipment is irregular in shape, it can be freely adjusted according to the actual situation of the equipment during installation. When the floating roof is installed, only the liquid inlet of the liquid storage equipment can be at the bottom, without any other requirements.
At present, other types of combined floating roof generally by the membrane surface, floating block (floating ring), the upper pressure ring, the lower pressure ring, sealing strips and other components through the connection of bolts or screws, plastic materials made of bolts or screws itself is limited in strength, and the degree of fastening with the pressure ring parts is limited, after a period of time after the operation of easy to loosen or break phenomenon, if you use the metal bolts or screws, when the liquid has a certain degree of corrosivity, easy to occur. If metal bolts or screws are used, when the stored liquid has a certain corrosiveness, corrosion is likely to occur, not only affecting the stability of the floating roof, but also may contaminate the stored liquid, when the floating roof is loosened or scattered, the bolts or screws and other parts may be sucked into the pump, resulting in damage to the equipment. The single-layer membrane type flexible floating top is a whole, no easy to fall off the spare parts, no loose, loose frame, fracture, parts off the possible, and the floating top and the inner wall of the equipment only produces a flexible connection, can float up and down freely, no jamming, tearing possible, no false liquid level phenomenon may arise, safe and stable operation.
◆? Maintenance-free
Single-layer membrane flexible floating roof is an organic polymer material as a whole, the structure is very simple, so the floating roof itself is maintenance-free. Currently other assembled floating roof after a certain period of operation (generally 3 ~ 5 years) shall be overhauled, the overhaul of the floating roof needs to be dismantled as a whole, due to the installation of a number of bolts or screws to connect, after the dismantling of the floating roof is difficult to re-establish, and in the overhaul of the storage equipment, it is necessary to dismantle the floating roof or the floating roof installation in the equipment inside the preinstallation of an overhaul bracket. For single-layer membrane floating roof, the membrane material flexibility, good resilience, in the storage equipment maintenance, can be rolled up inside the equipment will be stacked floating roof, equipment maintenance does not have the slightest impact, maintenance is completed, the floating roof can be restored to unfold.
Beijing OuDe RuiChuang Electric Power Science and Technology Co.