The General Assembly elected 46 representatives from Tiantai County to attend the 6th Taizhou People’s Congress in accordance with the law. Comrade Chen Shuanglian of our company was successfully elected after being reviewed and confirmed by the Standing Committee of the Taizhou People’s Congress.

This is both a personal honor and an enterprise honor.

Since its establishment, Yanpai Co., Ltd. has always kept in mind its responsibilities as a social citizen, abide by the Constitution and laws, closely follow the pace of the Communist Party of China, conscientiously implement Xi Jinping Thought on Socialism with Chinese Characteristics for a New Era, actively practice the “Four Consciousnesses”, and support The party’s line, principles and policies are pioneering and enterprising, working hard, overcoming difficulties, striving for excellence, and helping to develop and build a modern city of harmony.

2021 has come to a successful end. In the past year, Yanpai has been successfully listed on the Shenzhen Stock Exchange (stock code: 301081), adding a splendid touch to the company’s development history.

This is not only relying on the unity of all Yanpai people, the hard work and struggle day and night, but also on the trust and support of Yanpai from All walks of life and even overseas compatriots.

In the coming new year, all Yanpai people will continue to adhere to the quality policy of “rigoroutpu tthe quality,technology build the brand “, in order to achievethe vision of “becoming a world-class leading enterprise providing solid-liquid separation and air filtration products”  works tirelessly.

I wish you: a happy and happy family, auspicious and prosperous Year of the Tiger! Happy Chinese New Year and auspicious Year of the Tiger!

In the filtration industry, Yanpai Co., Ltd. has become a world-class manufacturer and is a leading enterprise in China’s industrial cloth industry. Quality assurance, “Yan brand” brand reputation in the domestic and foreign filter cloth market. The company currently has two production plants and three wholly-owned subsidiaries: Shanghai Yanpai Filter Cloth Co., Ltd., Mid-Atlantic Industrial Textiles Co., Ltd., and Zhejiang Yanpai Technology Co., Ltd., with sales outlets all over the world.

Filter application

The filters produced by Yan brand are widely used in pulp dehydration, ore washing dehydration, phosphogypsum dehydration, urban sludge dehydration, petrochemical sludge dehydration, clothing washing sludge dehydration, power plant desulfurization gypsum dehydration, potash filtration, juice pressing, etc. dozens of working conditions.

At the same time, it can meet the needs of customers for highly customized products, and it is perfectly suitable for ten products including vacuum belt filters, belt filter presses, vertical filter presses, flat disc/disc filters, centrifuges, and drum machines. More than one mainstream filter equipment.

     

Application equipment and model

Sludge dewatering belt
(equipment: belt filter press)Product model: YP601, YP602, YP602A,

YP603, YP603A, YP604, YP607,

YP608,YP613,YP626,YP702

mineral separation zoneProduct model: YP605, YP609, YP617,

YP620, YP622, YP623, YP623A

Desulfurization and denitrification belt
(Equipment: vacuum filter press) Product model: YP605, YP617, YP620A, YP623

Juice Press Belt
(equipment: belt filter press)
Product model: YP608, YP626

Wear-resistant and high-efficiency dewatering mesh belt series—YP601

Product features: excellent water permeability, good stability, not easy to discount.
Product features: excellent permeability, good stability, not easy to be curved and deformed.
Product use: suitable for papermaking sewage, red mud dewatering in aluminum plants, printing and dyeing sewage, electroplating sewage, tailings sewage and other dewatering fields that require high sludge filter cake stripping.
Product use: suitable for papermaking wastewater, aluminum plant red mud dewatering, printing and dyeing wastewater, electroplating wastewater and tailing water, such area of the filter cake stripping to demand higher sludge dewatering.
Application equipment: belt filter press.Applications: belt type filter press.

1.2
Wear-resistant and high-efficiency dewatering mesh belt series—YP608

Product Features: Excellent water permeability, good stability, not easy to discount.

Product features: good permeability, good stability, not easy to be curved and deformed.

Product use: suitable for papermaking sewage, red mud dewatering in aluminum plants, printing and dyeing sewage, electroplating sewage, tailings sewage and other dewatering fields that require high sludge filter cake stripping.

Product use: suitable for papermaking wastewater, aluminum plant red mud dehydration, printing and dyeing wastewater, electroplating wastewater and tailing water area of the filter cake stripping to demand higher sludge dewatering.

Application equipment: belt filter press.

Applications: belt type filter press.
1.4
High pressure mesh belt series—YP626

Product features: Excellent water permeability and wear resistance, and the herringbone pattern design has better peelability.

Product features: Excellent water permeability and the wear-resisting performance, the design of herringbone is better off.

Product use: It is mainly used in the dewatering fields of urban sewage, ceramic sludge, coal washing sludge, etc., which require high water permeability, thick sludge particles, and thick mud cakes.

Product use: Mainly for urban sewage, pottery and porcelain of sludge and coal slime on permeability requirements higher, sludge and mud cake with thicker grain thicker area of dehydration.

Application equipment: belt filter press, sludge dewatering machine, double-screen pulp washer.

Applications: machine, double net pulp washing machine. Belt type filter press, the sludge dewatering.

TWO

Vacuum drying

Vacuum Drying Class
2.1

High temperature mesh belt series—YP656A

Product Features: Good dimensional stability and temperature resistance.

Product features: Good dimensional stability and heat resistance properties.

Product use: used for drying of materials in food or medical fields.

Product use: Used for food or dry in the field of medical materials.

Application equipment: vacuum belt dryer.

Applications: Vacuum belt drying machine.

Product Features: Good dimensional stability and mesh flatness.

Product features: Good dimensional stability and surface roughness.

Product use: mine screening.

Product use: Mine sieving.

Application equipment: Linear screen.

Applications: Linear sieve.
3.3

High-strength anti-hydrolysis mesh belt series—YP607

Product Features: Excellent dimensional stability, not easy to deform.

Product features: Good dimensional stability, not easy to be curved and deformed.

Product use: used in the gravity dehydration and concentration section of filter presses and other equipment.

Product use: Applied to the filter press equipment such as gravity dehydration enrichment period.

Application equipment: belt filter press, sludge dewatering machine.

Applications: Belt type filter press, the sludge dewate ring machine.

Product Features: Good dimensional stability and mesh flatness.

Product features: Good dimensional stability and surface roughness.

Product use: Phosphorus and potassium fertilizer filtration.

Product use: Phosphate, potash filtering.

Application equipment: vacuum belt conveyor.

Applications: Vacuum belt conveyor.
4.2
High-precision desulfurization mesh belt series—YP617

Product features: high retention precision, good filtering effect and long service life.

Product features: Intercept high accuracy, good filtering effect, long service life.

Product Usage :

1. Widely used in the desulfurization process of major power plants, chemical plants, iron and steel plants, etc.

2. It is used in industries such as fly ash and other materials with fine particles and need to use wet filtration process.

Product use:

1.Widely used in power plant, chemical plant, steel mills such as desulfurization process.

2. The application in materials such as fine particles of fly ash, requiring wet filtration process.

Application equipment: vacuum belt conveyor.

Applications: Vacuum belt conveyor.
4.3
High-strength desulfurization mesh belt series—YP623

mechanical damage

Its main performance is the wear and tear of the non-woven layer of the filter medium, which is caused by uneven airflow distribution and dust erosion on the surface of the filter cloth under high filtration wind speed; or because the filter cloth is not installed in place, the friction between the filter cloth and the damage , or the installation of the injection tube is not vertical, resulting in holes in the range of 30 to 40 cm of the mouth, resulting in loss of filtration performance. The polypropylene filter cloth is close to zero emission and can meet the strictest environmental protection standards; it has good ash cleaning performance, can provide higher ventilation, or can reduce the pressure difference. Environmental filter cloth is a filter medium woven from natural fibers or synthetic fibers. Include wire mesh or strainer.

Specifically, at the mouth of the damaged cloth, the cloth bag is damaged, the lower part of the broken filter cloth, and the bottom of the filter cloth is damaged.

filter bag mouth

The damage to the bag mouth of the filter cloth is mostly in the range of 30-40cm downward from the bag mouth, which is mainly manifested in the blowing off of the bottom layer of the filter material. Most of them are caused by high compressed air, skewed blowpipe, and deformation of the faceplate. During the installation process, attention should be paid to the installation quality.

Filter bag body position

Due to the long-time pulse injection, the contact part of the filter cloth and the skeleton is worn, and obvious wear marks appear in the horizontal and vertical rib directions. Attention should be paid to the size of the filter cloth and the skeleton, the surface finish of the dust removal skeleton, etc.

The bottom of the filter cloth is damaged

A worn bottom of the filter cloth is more common, possibly because the bottom of the bag cage is too small or the filter cloth is so long that the bag cage can only support the bottom of the bag. When the action is too large and the inner side of the filter cloth is worn, the filter cloth is cleaned and filtered. Or excessive dust accumulation forms eddy current wear filter cloth.

For chemical corrosion filter cloth:

Chemical etching is the most obvious manifestation of strength in acid etching, alkaline etching, oxidation and corrosion of discarded dust bags, especially as a result of corrosion of the filter cloth hydrolysis loss, can withstand the load, thereby losing filter performance. This phenomenon is mainly due to the selection problem with the cloth or the use of environmental conditions exceeding the range of the fiber, resulting in filter cloth performance and failure loss.

Acid corrosion of filter cloth

High temperature filter materials generally have acid corrosion, mainly sulfur oxides. Especially in the flue gas desulfurization of coal-fired boilers, high-sulfur coal is used, and the content of sulfur oxides in the flue gas is high, reaching 50000 mg/nM3. In high temperature environments, sulfurous acid and sulfuric acid are formed from sulfur oxides, causing corrosion and failure of filter materials. If the flue gas contains HF, the glass fiber filter material cannot be used, which is easily corroded by acid, resulting in the failure of the filter material.

The operating temperature of the control flue gas is generally above the acid dew point. If the temperature is lower than the acid dew point, the filter system must be closed to avoid corrosion of the filter cloth. Acidic liquids include hydrochloric acid, sulfuric acid, nitric acid, and hydrofluoric acid.

Alkali corrosion of filter cloth

Most of them appear in the production process of sodium salt and ammonia chemical industry, such as sodium chloride, ammonia water, sodium carbonate and other working conditions. There are few areas of flue gas dust removal such as power plants, cement plants, waste incineration plants, and steel plants.

Oxidation and corrosion of filter cloth

Oxidative corrosion damage refers to a certain amount of oxidant, due to oxidative corrosion mainly used in PPS-based filter media filters, will cause the oxide-based filter material PPS nitrogen oxides, oxygen, ozone damage, concentrated sulfuric acid.

Many customers are very troubled when choosing the filter cloth of the filter press. Is there a filter cloth that is durable and suitable for their own filtering, and the price is moderate?

Yes, many people have experienced this kind of trouble. For the choice of filter cloth for filter press, I personally think the following points need to be paid attention to:

1. All kinds of minerals need high air permeability due to large processing capacity, easy to clean the filter cake, and low labor intensity of workers. There are two types here, one is economical and cheap. This kind of filter cloth is generally made of non-woven fabrics. Generally, non-woven fabrics with low grams are not durable, especially for dry discharge of various tailings. If non-woven fabrics of lower quality are selected, several pieces need to be replaced every day Dozens of dollars are not only not cheap, but also reduce production efficiency, increase the labor intensity of workers, and easily make operators feel tired, thereby increasing the negative emotions of operators, which may cause some losses to the enterprise, so cheap nonwovens Not only is the cloth not cheap, but it increases the cost, loses the enthusiasm of the workers, or causes unnecessary losses to the enterprise.

So I recommend high-strength yarn 750g non-woven fabric, this non-woven fabric is durable and has good filtering effect. If you have customers who are troubled by this matter, you can choose to try it. Applicable industries: concentrates, tailings, coal washing, etc. of various non-ferrous metal ores.

The disadvantage of this filter cloth is that after the filter cloth is used for a period of time, the filter cake is not easy to fall off. Compared with other filter cloths, it will increase the labor intensity of workers. The advantage is that the price is relatively cheap.