Common Leakage Of FRP Storage Tanks And Repair Methods

 

 

This article mainly discusses the common leakage phenomenon of FRP storage tanks and analyzes its causes. Eventually, we hope to find out the repair methods.

 

Bottom plate leakage

In general, the visual manifestation of bottom plate leakage is the corrosion phenomenon on the ground. At this time, we should first check the outside of the tank to find the leakage point and consider whether the damage of the tank is caused by the bump during the lifting process; secondly, we should consider whether the leakage is caused by the air holes inside the bottom plate due to the unqualified manufacturing process.

Solution: Open a manhole side window of about one person's shoulder width (diameter φ400) on the side of the tank, enter the tank to find the leak point, and reinforce the leak point and the entire bottom of the tank, the inner wall of the tank bottom upward within 1 meter of the all-around cladding for repair. After completion, fill with water and test for 48 hours without leakage to solve.

 

Flange Leakage

Flange leakage is generally caused mostly by defects in the production of the flange, as shown in Figure 3, the flange was found to be leaking drop by drop to the lower exterior.

Solution: The leaking flange will be cut and replaced, bearing in mind that when replacing the internal and external flange body and tank are required to wrap, and internal wrapping is completed to leave the tank inside the mouth to avoid blocking the flow of liquid.

 

Side window manhole bolt drip

If the tank comes with a side manhole, after finding the side manhole bolt dripping, you need to consider two problems: first, whether the bolt is not tightened or the gasket is damaged; second, whether the manhole flange has cracks.

Solution: Replace the gasket for the tightened bolt. If the problem is not found to be solved, remove the blind plate and find that the flange is cracked, the flange should be cut down and re-wrapped, and replaced.

 

 

In order to prevent the phenomenon of leakage, should do a good job of daily maintenance.

Maintenance of FRP storage tank

 

1. To prevent the work apparatus from hitting the tank wall. The use of ladders, metal parts equals the contact part of the tank wall to add soft pads to protect the inner wall from being scratched and bruised.

2. Enter the FRP acid and alkali tank maintenance, should first close all feed valves, empty and clean the tank. After testing to confirm that there is no toxic gas in the tank, no lack of oxygen to enter the tank. Enter the tank should wear soft-soled shoes, strap on the safety belt, and the other end of the safety belt tied to the top of the tank. Pay attention to the ventilation inside the tank. Into the tank operation, there must be personnel outside the tank under supervision.

3. Outdoor use of glass fiber reinforced plastic storage tanks will be used for many years due to aging of the outer surface layer, resulting in resin layer peeling or fiber exposure. It is recommended that every two or three years the outer surface of the tank should be painted or resin to prevent aging and extend service life.

4. FRP tank maintenance can not be loaded at will on the top of the tank but is also not allowed to apply external force on the receiver.

5. FRP tanks outside climbing ladders, cages, guardrails before climbing should be carefully checked whether safe and reliable, there is an abnormal situation is strictly prohibited to climb the use.

 

We are an FRP storage tank supplier, please feel free to contact us if you need them.

Do You Know The Differences Between GRP And FRP?

 

 

The term FRP is often used interchangeably when referring to GRP, a broader generic term more commonly used for engineering materials used in a wide range of industrial applications. The term FRP is often used interchangeably when referring to GRP.

 

What is GRP?

 

GRP stands for Glass Reinforced Plastics. It is also known as glass fiber, composite plastic, or FRP. it is strong, extremely light, and versatile. the behavior of GRP is different from that of traditional thermoplastics used in everyday products. This means that it has properties that can be used in a range of applications in many industries.

 

What is FRP?

 

FRP stands for Fiber Reinforced Polymer. FRP is a composite material formed from a polymer matrix reinforced with fibers. While the fibers used are usually glass fibers, such as GRP, other fibers such as carbon, aramid, or basalt are also used.

 

What is Fiber Reinforced Plastics used for?

 

GRP is used in a range of different applications. In many industries, products made partially or completely from GRP are useful. For example:

1. Non-slip protection for refurbishing wet and dry floors

2. Handrails

3. Sports equipment such as kayaks

4. Electronic enclosures

5. Safety grating for industrial and public areas

6. Helicopter rotor blades and wind turbine blades

7. Water pipes or drain covers

 

 

What are the properties of Fiber Reinforced Plastics?

 

GRP has many valuable properties that make it very useful in industries around the world. These properties include

Thermal insulation

FRP has a low thermal conductivity of 1.25 to 1.67 kJ/(mhK) at room temperature, 1/100 to 1/1000 that of metal, making it an excellent thermal insulation material. In the case of transient ultra-high temperature, it is an ideal material for thermal protection and ablation resistance and can protect the spacecraft to withstand the high-speed airflow above 2000℃.

High strength to weight ratio

The relative density is between 1.5~2.0, only 1/4~1/5 of carbon steel, but the tensile strength is close to or even exceeds that of carbon steel, and the specific strength can be compared with that of advanced alloy steel.

Corrosion resistance

FRP is a good corrosion-resistant material, with good resistance to the atmosphere, water, and general concentration of acids, alkalis, salts, as well as a variety of oils and solvents. It has been applied to all aspects of chemical corrosion resistance and is replacing carbon steel, stainless steel, wood, non-ferrous metals, etc.

Good electrical properties

It is an excellent insulating material, used to make insulators. Good dielectric properties can still be protected under high frequency. Good microwave permeability has been widely used in radar radome. Good heat and sound insulation effect.

Easy to mold

① The molding process can be flexibly selected according to the shape, technical requirements, usage, and quantity of the product.

② The process is simple and can be molded in one go, with outstanding economic effects, especially for products with complex shapes and small quantities that are not easy to mold, highlighting its process superiority.

 

What are the production methods of Fiber Reinforced Plastics?

 

Basically, there are two major categories, namely wet contact molding and dry pressurized molding. If we divide by process characteristics, there are hand paste molding, RTM method, lamination molding, molding, extrusion and pulling method, winding molding, etc. Hand- glued molding includes a bag-pressing method, hand-gluing method, a spraying method, wet-gluing low-pressure method, and mold-free hand-gluing method.

 

We are an FRP pipes manufacturer, please feel free to contact us if you need them.

FRP Biogas Desulfurization Scrubber

FRP Biogas Desulfurization Scrubber   FRP scrubbers tower    FRP Desulfurization Tower

 

Diameter: DN1600*20000

Medium: Biogas desulfurization and purification

The main body of the glass fiber reinforced plastic biogas desulfurization tower includes a washing tower, a hydrogen sulfide sampling and monitoring system, a lye configuration tank, a water supply and softening device, a liquid level control system, supports and connectors. The desulfurization system realizes fully automatic operation by monitoring the hydrogen sulfide concentration of the outgoing gas and the pH value. During operation, the biogas passes through the desulfurization tower from bottom to top, and the Na2CO3 solution (or NaOH solution) is sprayed from the top down to make the H2S gas and the lye have a sufficient chemical reaction in the packing area to achieve the effect of purifying the biogas.

 

Yongchang provides customers with the following products as well as their installation and after-sales service:1. FRP storage tanks, specifically designed for producing FRP containers with a diameter of 25000mm (5000 cubic meters) or less.

2. Pipelines, including FRP process pipelines and FRP sand pipelines.

3. FRP and plastic composite products, including FPR\PP, FPR\PVC, FPR\CPVC, FPR\PVDF, etc.

4. FRP desulfurization devices, i.e. humidification towers, desulfurization towers, slurry tanks, thickeners, oxidation tanks, venturi tubes, flues, chimneys, spray pipelines, biogas purification and treatment facilities, etc.

5.Transfer of production technology of a complete set of microcomputer controlled filament winding equipment, and the relevant guidance and training.We are based on integrity, cherishing our reputation, delivering high-quality products, and providing the best after-sales service as a return to customers. We sincerely welcome customers from all walks of life to visit our company and give valuable advice.

https://www.yongchangfrp.com/product-frp-biogas-desulfurization-scrubber.html

 

 

 

 

 

Glass Fiber Reinforced Plastic Brewing Food Tank FRP Brewing Food Tank

Glass Fiber Reinforced Plastic Brewing Food Tank     FRP Brewing Food Tank    acid storage tank manufacturer

 

Specification: DN3600*7000

Medium: vinegar, soy sauce, etc.

Yongchang FRP fermentation tank is suitable for low-salt solid-state fermentation, high-salt dilute state fermentation, solid-dilute fermentation and other soy sauce and vinegar fermentation stages, as well as the holding and precipitation of soy sauce and vinegar. The inside of the tank is smooth and easy to clean. The internal fittings are designed All consider the design of no sanitary dead corners. For the fermentation tanks with light requirements, the top of the fermentation tank is treated with light transmission.

 

Advantages of FRP storage tank:

(1) High strength

The density is between 1.5~2.0, only 1/4~1/5 of carbon steel, but the tensile strength is close to or even higher than that of carbon steel

(2) Good corrosion resistance

(3) Good electrical performance

(4) Safe for environment

(5) Light Weight – easier handling

(6) Smooth Inner Surface – lower sludge formation, lower cleaning costs

It is an excellent insulating material used to make insulators.

 

Fiberglass storage tank application

Media that can be stored: inorganic acids, organic acids, bases and hydroxides, elements, gases, and other inorganic compounds, alcohols, aldehydes, ketones, ethers, esters, hydrocarbons and petroleum products, halogen-containing organic compounds and other organic compounds, etc. medium. 

 

https://www.yongchangfrp.com/product-glass-fiber-reinforced-plastic.html

FRP/ PP, PVC Composite Pipe

FRP/ PP, PVC Composite Pipe       FRP Composite Storage Tank      fiberglass tank manufacturers

 

Product Description

If you have any questions about product parameters, you can contact us at any time!

 

Yongchang FRP composite pipes take full advantage of the corrosion resistance of pp, pvc, and PE, and the high strength and temperature resistance of frp, thereby expanding the application range of single pp, pvc, and PE pipes, mainly used in food, pharmaceutical and chemical industries, etc. industry.

 

FRP Pipe Performance and Characteristics

(1) Corrosion Resistance:

Most FRP pipe selection resins, glass fiber reinforced materials and composite structures are considered suitable for chemical applications to provide consistent corrosion resistance. There are still some extreme chemical services, special structures and alternative resins should be considered.

Chemically inert material, excellent corrosion resistance, and different corrosion-resistant pipelines can be selected according to the conveying medium. The conventional thickness of the corrosion-resistant layer is 5mm. The resin content is greater than 90%, which mainly plays the role of anti-corrosion and anti-leakage. The choice of resin is based on the use of different types of resin. Resistant to acid, alkali, salt, sea water, untreated sewage, corrosive soil or groundwater and many chemical fluids

(2) High Mechanical Strength and Strong Designability

The internal pressure resistance, external pressure resistance and impact resistance are all good, and pipes and fittings can be designed and manufactured according to the required pressure. The anti-corrosion layer can improve the use effect of FRP pipes under various conditions by adding wear-resistant materials, anti-static materials, and flame retardant materials.

According to the specific use situation, the specific performance and shape of the winding FRP pipe can be designed:

①The winding angle during winding can be designed so that the fiberglass steel pipe has different longitudinal/circular strength distribution;

②The wall thickness of the FRP pipe can be designed so that the FRP pipe can withstand different internal and external pressures;

③The materials can be designed to achieve different corrosion resistance, flame retardancy, dielectric purposes, etc.;

④The head-end method can be designed to adapt to different installation conditions to increase the speed of engineering installation.

(3) Strong Temperature Adaptability

Operating temperature range: greater than -70 degrees Celsius and less than 180 degrees Celsius, it can be used normally, and the pipeline will not crack under freezing media.

(4) Small Fluid Resistance

The inner surface of the FRP pipeline is very smooth, the roughness coefficient is small, and the water conservancy coefficient C can be kept in the range of 145-150 for a long time. The water friction loss coefficient f is 0.000915 after testing, which can significantly reduce the fluid pressure loss along the way and improve the transportation. Ability is above 20%. Reduce flow resistance, increase flow rate, and reduce energy consumption. Using smaller diameter pipes to transport fluids of the same flow rate can increase the flow rate by about 10% compared with steel pipes of the same specification; it does not scale and does not reduce the flow rate after long-term use. The protection of cables in the environment of interference and heavy corrosion has a good effect;

(5) Lightweight and High, Easy to Transport And Install (<20% of steel, 10% of concrete)

The specific gravity of frp pipe is 1.7-1.9. Compared with other material pipes of the same pressure and same diameter, the weight of FRP pipe is about 30% of that of steel pipe, so transportation and installation are very convenient. Each FRP pipe can reach 12m in length, and installation is quick and easy. In addition, it can eliminate the welding, rust prevention, and anticorrosion treatment required for the installation of steel pipes. The weight of the pipe is only 1/4 of the ductile iron pipe of the same specification and length, and 1/10 of the cement pipe. It is convenient to transport and unload, and is easy to install. FRP pipeline installation technology is mature, convenient and fast, reducing pipeline joints, accelerating installation speed, and improving the quality of the entire pipeline

(6) Maintain Water Quality

The material is non-toxic. The glass fiber reinforced plastic pipe is made of resin as the matrix and glass fiber as the reinforcing material through a special process to ensure that it is hygienic and non-toxic, the inner wall is smooth and does not accumulate, does not breed microorganisms, ensures the quality of the fluid, and does not affect water and other The medium produces secondary pollution and transports drinking water, which can maintain long-term water quality and sanitation. The water-conveying glass fiber reinforced plastic pipes are made of food-grade resin, and various testing indicators have reached international standards.

(7) Very Versatile and Good Weather Resistance

Yongchang FRP pipes have good weather resistance and are suitable for harsh environments such as deserts and saline-alkali;

(8) Material Selection

Resin selection: base resin made of epoxy vinyl resin and phenolic vinyl resin. The fiber is non-alkali fiber or ECR fiber. Meet various anti-corrosion requirements.

(9) Life

The service life of FRP pipes can reach 50 years or more, which obviously reduces a lot of maintenance costs.

(10) Color

The exterior color of FRP pipes can be made into various colors according to user requirements. The exterior color can be changed by spraying gel coat resin to meet various use environments, and the exterior is neat, beautiful, and obvious in color.

 

If you have any questions about the usage scenarios and fields of FRP pipes, you can contact us, and you will receive expert answers within 24 hours!

 

https://www.yongchangfrp.com/product-frp-pp-pvc-composite-pipe.html

 

FRP Desulfurization Spray Pipe fiberglass tank manufacturing

FRP Desulfurization Spray Pipe     fiberglass tank manufacturing      FRP Biogas Desulfurization Scrubber

 

Product Description

If you have any questions about product parameters, you can contact us at any time!

Product features of Yongchang FRP spray coating

Corrosion resistance: Epoxy vinyl ester resin is used for pipeline lining to resist the corrosion of sulfur-containing and fluorine-containing flue gas and liquids in thermal power plants. Heat resistance: Pipeline lining resin adopts epoxy vinyl ester resin with HDT (Heat Deflection Temperature) of 110℃, and its instantaneous temperature resistance can reach 220℃.

Wear resistance: Wear-resistant fillers are added when the pipe is made, and the inner surface layer and outer surface layer have a low roughness coefficient. It has excellent wear resistance in a liquid with a solid content of 15%. Thermal shock resistance: made of epoxy vinyl resin The resulting FRP has good thermal shock resistance and can avoid delamination under thermal shock conditions when the temperature reaches 200°C. Widely used in desulfurization and denitration projects in power plants

FRP Pipe Application

Fiberglass reinforced pipe is widely used in various industries with its excellent product performance. And played an important role in various industries.

 

Petroleum, chemical, pharmaceutical, biogas industries: such as chlor-alkali, potassium sulfate fertilizers, papermaking, acid regeneration systems.

 

Water treatment industry: such as seawater desalination, industrial wastewater treatment output and input, and pure water systems.

 

Liquid transportation industry: urban water supply, urban drainage, irrigation system.

 

Power industry: flue gas flue, desulfurization system, circulating water, cable pipe, glass fiber reinforced plastic chimney.

 

Environmental protection: sewage odor recovery, workshop waste gas treatment, factory air purification, biogas desulfurization and purification.

 

FRP round pipes are used in petroleum, chemical, mining, metal production, power plants, flue gas desulfurization (FGD), pulp and paper mills, and drainage.

 

Our Yongchang glass fiber reinforced plastic / FRP pipes are designed and manufactured according to customer requirements, with various sizes and configurations. We can manufacture pipelines of any specification and pressure, and can be made into composite pipelines such as PVC/FRP, PP/FRP, PVDF/FRP, etc. according to the conditions of use. Our designers can calculate the hoop stress, axial stress, and bending Poisson's ratio coefficient of the product according to your available space, chemical fluid requirements and applicable natural conditions, and then give the product selection, product thickness, and layering. Detailed manufacturing process parameters. All of our designed pipes meet industry standards, such as ASTM D2996-filament wound "glass fiber" (glass fiber reinforced thermosetting resin) pipe standard specification for filament wound pipe. According to user requirements, various standard fiberglass reinforced pipes and fiberglass fittings can be produced according to ISO 7370, ANSI/AWWA C950, AWWA M45, AWWA C590, ISO 10467, BS 5480, ASTM D2996, ASTM D2907.

Regarding this FRP Pipe, if you have any questions, please contact us and we will be happy to answer you!

 

https://www.yongchangfrp.com/product-frp-desulfurization-spray-pipe.html

 

FRP Composite Storage Tank Vertical FRP Tank

FRP Composite Storage Tank      Vertical FRP Tank       FRP Acid / Alkali Storage Tank

 

FRP storage tank is currently the leading industry standard sealing device on the market. Due to its lightweight, sturdy and viable fiberglass design, Fiber Reinforced Plastic Tank provides safe storage without the risk of corrosion or bacterial contamination.

 

Specification: 3200*6500

Medium: concentrated nitric acid.

 

FRP nitric acid storage tanks have good corrosion resistance. 50% or less of nitric acid can be made of FRP materials. Compared with aluminum cans and stainless steel tanks, FRP nitric acid storage tanks have relatively low cost, simple process and long service life. Concentrated nitric acid storage tanks need double-layer composite tanks. If the temperature requirements are high, the lining needs to be made of PVDF material to meet the requirements.

 

The Yongchang-branded glass fiber reinforced plastic (FRP) storage tanks are well designed and manufactured according to customer demand, with various shapes, sizes and configurations. We can manufacture storage tanks of any specification and pressure, which can be made into composite containers such as PVC/FRP, PP/FRP, PVDF/FRP according to the conditions of use. Our designers can calculate the hoop stress, axial stress, and bending Poisson’s ratio coefficient of the product according to your available space, chemical storage requirements and applicable natural conditions, and then give the detailed manufacturing process parameters, such as product selection, product thickness, and layering. All of our designed containers meet industry standards, such as ASTM D3299 for filament-wound storage tanks and ASTM D4097 for contact molded storage tanks.

 

In addition, FRP storage tanks are our best-selling products worldwide, please contact us in time if you need them!

 

https://www.yongchangfrp.com/product-frp-composite-storage-tank.html