What are the properties and characteristics of FRP pipes?

 (1) Light 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 caliber, the weight of FRP pipe is about 30% of that of steel pipe, so it is very convenient for transportation and installation. The length of each FRP pipe can be up to 12m, which is quick and easy to install. In addition, it can also eliminate the welding, rust prevention and anti-corrosion treatment required for steel pipe installation. The weight of the pipe is only 1/4 of that of ductile iron pipe and 1/10 of that of cement pipe, which is convenient for transportation and unloading and easy to install. The installation technology of FRP pipe is mature, convenient and fast, reducing pipe joints, speeding up the installation and improving the quality of the whole pipe

 

(2) Corrosion resistance.

Perhaps the main reason for using fiberglass reinforced plastics (FRP) is because of their inherent corrosion resistance. In many cases, they are the only material that can handle a given service environment; in other cases, their corrosion resistance combined with their economics make them the most economically acceptable solution.The corrosion resistance of FRPs is a function of the resin content and the specific resin used in the laminate. In general, the higher the resin content, the more corrosion resistant the laminate.

 

Chemically inert materials with excellent corrosion resistance and different corrosion resistant pipes are available for transporting media. The conventional thickness of the corrosion-resistant layer is 5 mm. the resin content is greater than 90%, which mainly plays a role in corrosion and leakage prevention. The choice of resin is based on the use of different types of resin. Resistant to acid, alkali, salt, seawater, untreated sewage, corrosive soil or groundwater and many chemical liquids

 

(3) High mechanical strength and designability

Good resistance to internal pressure, external pressure, and impact resistance, allowing the design and manufacture of pipes and fittings to the required pressure. The anti-corrosion layer can improve the use of FRP pipes under various conditions by adding wear-resistant materials, anti-static materials, flame retardant materials, etc.

 

The specific properties and shapes of the wound FRP pipes can be designed according to the specific use conditions.

① The winding angle when winding can be designed so that the FRP 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.

 

③Materials can be designed to achieve different corrosion resistance, flame retardancy, dielectric properties, etc.

 

④The front-end way can be designed to adapt to different installation conditions and improve the speed of project installation.

 

(4) Strong temperature adaptability

Operating temperature range: greater than -70 degrees Celsius, less than 180 degrees Celsius, can be used normally, the pipeline does not crack in the frozen medium.

 

(5) Small fluid resistance

The inner surface of FRP pipe is very smooth, the roughness coefficient is small, and the hydraulic coefficient C can be maintained in the range of 145-150 for a long time. Tested, the water friction loss coefficient f is 0.000915, which can significantly reduce the fluid pressure loss along the way and improve transportation. Capacity in more than 20%. Reduce the flow resistance, increase the flow rate and reduce energy consumption. Use smaller diameter pipe to transport the same flow of fluid, than the same size of steel pipe can improve the flow rate of about 10%; it will not scale and reduce the flow rate after long-term use. Excellent protection for cables in disturbed and heavy corrosive environments.

 

(6) Maintain water quality

The material is non-toxic. FRP pipe is made of resin as the base, glass fiber as the reinforcing material, after a special process to ensure the hygiene and non-toxic, smooth inner wall does not accumulate, does not breed microorganisms, to ensure the quality of the fluid, does not affect the water and other media to produce secondary pollution and transport drinking water, can maintain long-term water quality and hygiene. Water transmission FRP pipe adopts food-grade resin, and the testing indexes all reach international standards.

 

(7) Widely used, good weather resistance

FRP pipes have good weather resistance and are suitable for harsh environments such as deserts and saline lands.

 

(8) Material selection

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

 

(9) Low maintenance cost

The service life of FRP pipe can be more than 50 years, which greatly reduces the maintenance cost. Since FRP pipes have excellent corrosion resistance, abrasion resistance, frost resistance and pollution resistance, there is no need for rust prevention, pollution prevention, insulation, insulation and other measures and maintenance. Buried pipes do not need cathodic protection, which can save more than 70% of maintenance costs.

 

(10) Color

The appearance color of FRP pipes can be made into various colors according to the requirements of customers. The color of appearance can be changed by spraying gel coat resin to adapt to various use environments, with neat and beautiful appearance and vivid colors.

FRP Swirl Plate Product Introduction

 

 

Hebei Yongchang Composite Material Technology Co., Ltd. production of FRP swirl plate is usually installed in the swirl tower, when working, dusty flue gas rises from the bottom of the tower, due to the guiding effect of the swirl plate blade and the flue gas rotates up. So that the liquid flowing up and down the tower is sprayed into mist droplets, and there is a large contact area between the gas and liquid, the droplets are driven by the air flow to rotate, the centrifugal force generated strengthens the contact between the gas and liquid, thrown to the tower wall along the wall and down to the next layer of the tower. And then atomized by the air flow and the gas-liquid contact. Therefore, the FRP swirl plate plays a role in gas-liquid reaction and dust removal and fog removal in the tower, and whether its design is reasonable will affect the dust removal absorption effect, and it also plays a good dehydration role. Hebei Yongchang Composite Material Technology Co., Ltd. adopts special FRP swirl plate design program software, which plays an important role in its selection.

Second, the structure of the FRP swirl plate The FRP swirl plate is composed of a swirling blade, a cover cylinder, a collection tank, a special-shaped nozzle, and a circular overflow tube. Swirl plates can be divided into two types: inward and outward.

Third, the performance characteristics of the FRP swirl plate

1. FRP swirl plate is installed in the dust removal and desulfurization tower, the dust removal and desulfurization efficiency is high.

2. The resistance of dust removal and desulfurization is small, and the resistance is 800~1200Pa.

3. Low water quality requirements, dust removal and desulfurization water can be recycled, achieve high desulfurization efficiency, low operating costs;

4. Strong corrosion resistance, can be used for a long time in high temperature, strong acid, strong alkali, etc. and kinds of environment.

5. High dewatering efficiency, induced draft fan without water.

6. Easy maintenance, easy to install and disassemble the swirl plate; There are manholes at the top of the tower and above each layer of swirl plates, and auxiliary facilities such as maintenance platforms and ladders can be set up to facilitate daily maintenance.

7. Good processing effect, low operating cost, simple operation and reliable.

8. Resin adds high-strength wear-resistant acid and alkali-resistant silicon carbide material.

Fourth, the field of use OF THE FRP swirl plate is installed in a variety of absorption towers, scrubber towers and purification towers, is an important part of the tower for gas-liquid exchange and gas-water separation, desulfurization and fog removal.

Know about FRP Biogas Desulfurization Tower

 

 

Large and medium-sized biogas engineering technology is an energy engineering technology aimed at the development and utilization of organic wastes such as farm manure and kitchen waste, aiming at obtaining energy and controlling environmental pollution, and realizing a virtuous cycle of agricultural ecology. It mainly reduces the organic matter content of fecal water and waste through anaerobic fermentation and related treatment, Meet or approach the discharge standard and obtain biogas according to the technical design process requirements of the main body of anaerobic fermentation and supporting projects.

Biogas contains hydrogen sulfide gas, which must be desulfurized before combustion. In this biogas purification project, biogas treatment process steps: FRP aeration tank > FRP biogas desulfurization tower > FRP biogas washing tower。

Desulfurization process of desulfurization tower: the biogas from anaerobic biogas digester enters the desulfurization system after preliminary dehydration. Hydrogen sulfide gas contacts with desulfurizer and is removed from biogas due to redox reaction. The desulfurization system can provide the best temperature and water gas content for the desulfurization reaction. The loading process of desulfurizer can also provide the best air flow channel and effective contact area of gas-solid reaction for the desulfurization process, which can greatly improve the utilization efficiency of desulfurizer and the purification degree of biogas.

 

Dehydration, impurity removal and buffer process

The pressurized biogas enters the buffer tank to realize the effective separation of gas, liquid and solid. At the same time, the gas pressure stabilization treatment is carried out to meet the stable gas supply to the generator set and ensure the safe and efficient operation of the generator set. The separated water and particles settle to the bottom of the buffer tank through the action of gravity, and the impurity gas partially dissolved in the water is discharged from the bottom of the buffer tank with the water. The purified gas comes out from the top.