Wear resistant ceramics elbow bend pipe, pipe sleeve is used as composite ceramics pipe lined steel , wildly used in power plant boiler milling system piping. When welding it, you should pay attention to these relevant standards:

1. To prevent defects such as pores and cracks, the rust, scale, oil and debris on the sides of the weld bevel must be removed and kept clean and dry before welding.

2. Titanium calcium type should be dried at 150 ° C for 1 hour, low hydrogen type should be dried at 200-250 ° C for 1 hour.

3. It can’t be heated repeatedly. Repeatedly heated will decompose the carbide, then decrease the corrosion resistance and the mechanical function, and the post-weld hardenability will be increased, then it’ll be easier to occur crack.

4. When use low-hydrogen electrode to weld, it is necessary to perform preheating above 300 °C and slow cooling at 700 °C after welding. If the weldment can’t be post-weld heat treated, you should use a chrome-nickel stainless steel electrode as weldmen instead of  low-hydrogen electrode.

5. The end of the weld should be filled. For multi-pass welding, the previous weld slag should be removed and the inter-layer temperature of the weld should be measured and recorded before the next weld. And the Interlayer temperature should be controlled at 100~250°C.

Pingxiang Chemshun ceramics supply wear resistant ceramic steel composition pipe, bend and sleeves, wear-resistant ceramics pipe lining with high hardness, superior abrasion, light weight and corrosion and chemical resistance.

If you’re interested in our products, welcome to contact with us by email [email protected] or call 0086-15879957696 (whatsapp and Wechat is same).

Shanghai International Advanced Ceramics Exhibition is sponsored by China (Shanghai) International Advanced Ceramic Industry Exhibition,Focusing on the mainstream and new trends of advanced ceramic materials and products, advanced technologies, and advanced ceramic upstream and downstream industrial chains.

As industrial ceramic manufacturer and developer , Pingxiang Chemshun Ceramics Co.,Ltd attended the 13^th Shanghai Advanced Ceramics Exhibition with booth No.H1.C273 .

Different kinds of advanced industrial ceramics products wear shown in this exhibition, such as ZTA zirconia toughened alumina ceramics, ceramic lined pipeline, SIC silicon carbide ceramics, high alumina 99.7% fine ceramics, mineral ceramic balls with zirconia, yttria-stabilized zirconia, silica, alumina material. Which attracted many visitors’ attention and negotiation, like domestic and foreign universities, research institutes, ceramic purchasing companies.Fortunately, 4 orders have been generated when exhibition closed. At the same time, we also promoted much communication with downstream raw material supplies,it is much helpful for Chemshun ceramics promotion and study.

Chemshun Ceramics another online exhibition with booth No.574212 is coming from Aug 28^th to Sep 6^th, welcome to concern on our showroom : http://chemshun-04.bossgoo.com.

Preparation before filling inert ceramic ball:

(1) The dust and sundries in the tower should be cleaned up before the ceramic ball is loaded.

(2) In the interior of the tower, mark the loading height line of each ceramic ball and catalyst according to the loading drawing.

(3) Cranes, cranes and other necessary machinery should be prepared for large-scale projects.

(4) The staff who take part in the loading of ceramic balls should have a clear division of labor and be dedicated full-time so as not to cause confusion

(5) Check whether the ceramic ball and catalyst are consistent with the requirements of the loaded porce

In the construction process:

(1) When filling the lowest layer in the tower, we should pay attention to not causing damage to other systems in the tower. After paving the first layer, we should use tools to evenly tile the layer and ensure that the surface of the layer is on the same level.

(2) After the completion of the bottom installation, the platform for easy operation of the construction personnel should be laid first, so as to avoid the horizontal movement of the porcelain ball layer caused by the workers standing directly on the porcelain ball.

(3) The thickness of each layer of porcelain ball should be accurate and uniform, and the height should be consistent with the marked horizontal line.

Points for attention:

(1) In order to facilitate the operation of staff, low-voltage lighting should be connected to the interior of the tower.

(2) Before the operation, the staff should take off the easy to fall off items with them, wear professional work clothes and take good safety measures.

(3) In strict accordance with the porcelain ball loading construction drawings, the construction must be reviewed after completion.

(4) Measure the height of the remaining space, calculate the volume of the remaining space and the amount of ceramic balls required.

(5) After the completion of the installation, the whole construction should be carefully reviewed.

                                                                                     Application of inert alumina ceramic ball

Inert alumina ceramic ball has the characteristics of high mechanical strength, long service life, good chemical stability, no chemical reaction with materials, high temperature resistance, high pressure resistance, strong acid and alkali corrosion resistance, and good thermal shock stability.

Because the chemical nature of the inert porcelain ball is relatively lazy, it obviously does not undergo chemical reactions throughout the reactor. Use a carrier to cover the catalyst without changing the catalyst. The gas or liquid in the reactor has a temperature. The filling above the ceramic ball prevents the gas or liquid from blowing directly to the catalyst, which has a protective effect on the catalyst control. The shape of the porcelain ball is conducive to the uniform distribution of gas or liquid. Promote a more complete chemical reaction.

The main function of the filled ceramic ball is to increase the distribution point of gas or liquid, and support and protect the active catalyst of chemical materials with low strength. It is mainly used in the high-temperature, high-pressure, corrosive working environment of the chemical industry, in the petroleum, chemical industry, reformers, reactors, packing towers to prevent the equipment covered by the filtered silica or form fouling or damage the catalyst carrier.

Filler ceramic balls are also commonly used in high and low temperature converters, converters, hydroconverters, desulfurization tanks and converters in chemical fertilizer plants and hot blast stoves and heating conversion equipment in the iron and steel industry. The application field is very wide.

Chemical tower packing is a kind of solid filler, because of its easy materials, convenient manufacturing, cheap, so it is widely used at present. Its function is to provide sufficient contact surface for gas and liquid, and to create conditions for strengthening its turbulence degree, so as to facilitate mass transfer. But the current chemical packing market is mixed, so we need to know our requirements before we buy chemical tower packing, but also to understand what kind of chemical packing can be used.

The efficiency of packed tower has a great relationship with the chemical packing used. Generally, the chemical packing has the following requirements:

1, chemical packing for the material processing requirements have good corrosion resistance;

2, the chemical filler is larger than the surface. That is, the surface area of packing layer per unit volume should be large;

3, the density of the chemical packing itself (including material and structure) should be small, and have enough mechanical strength;

4, chemical packing surface wettability is better, and in the structure should be conducive to close contact, promote turbulence;

5, chemical packing void rate (also known as free volume) to large. That is, the void volume of packing layer per unit volume should be large.

Random packing is the core component of the packed tower, and the mass transfer efficiency of the packing is directly related to the operation performance of the packed tower. To improve the mass transfer efficiency of the filler, it can be considered to increase the specific surface area of the tower packing, improve the surface utilization rate, increase the diffusion coefficient or reduce the thickness of the stagnant film layer.

The mass transfer efficiency of chemical packing can be improved by changing the structure of the packed column

1. One of the main factors that determine the efficiency of the packing is the length of the contact time between the gas and liquid phases on the surface of the packing. Within a certain packing height, the longer the air contact time, the higher the packing efficiency.

2. Increasing the specific surface area of the packing can improve the mass transfer efficiency, but at the same time it will increase the operating pressure drop of the tower, reduce the flux, increase the liquid holdup, and also increase the investment cost. Therefore, it is necessary to comprehensively consider various operating factors and price factors of the packed tower to determine the appropriate specific surface area of the packing. The surfaces provided by the packing are not all effective gas-liquid contact surfaces, and improving the effective utilization of the specific surface area can improve the efficiency of the packing.

3. Fillers with different structures have the same specific surface area, but their properties are different. The performance of the filler can be improved by changing the structure of the filler. This is exactly what the development of new fillers does. Increasing the number of small plates composing the filler and changing the angle of the liquid flowing along the surface of the filler can increase the gas-liquid contact time and improve the efficiency of the filler.

Chemshun Ceramics as manufacturer and supplier of chemical packing products , welcome to inquiry

Thermal power plant coal transporting pipeline required the pipes and elbows with the characters of wear-resisting, leakproof, anti-corrosion, high temperature resistance. Preventing wear and abrasion resistance is extremely serious important.

Choosing a wear abrasion high temperature and corrosion resistant material as the straight and elbows of thermal power plant is the first task of the engineers and bosses of the power plant factories. The material developed from the steel industry to industrial plastic, change lots of for the world factories and dairy life. Now we’re meeting the advanced ceramic era. The high alumina wear resistant ceramic with the excellent characters are widely used in all kind of industrial wear application instead of the steel linings.

Why choose the high alumina wear resistant ceramic as the lining of pipe and elbows of thermal power plant?

Wear-resistant alumina ceramics’ main raw material is α-Al2O3, firing at 1530-1700℃. The Rockwell hardness of HRA80-90, the wear resistance ability is equivalent to 266 times of manganese steel, and 171.5 times of high chromium cast iron, so can greatly extend the service life of the pulverized coal pipe elbow.

According to the pipe or elbows different size and shape, Chemshun Ceramics suggest engineers choose the trapezoidal alumina ceramic plate, or the weldable ceramic plate, or ceramic arc plate/tile, or alumina ceramic pipe. The ceramic lining pipe is easy to fix. It protects your pipes and elbows very well. 

Chemshun hold the second Fun Sport Games on Nov.01, 2019

In the wonderful Autumn, fun sports competition was held by Chemshun Ceramics on Nov.01, 2019. Our staffs enjoyed the competition and were awarded with gifts.
 
Accoting to this fun sports competition, our employee have relaxed themselves, released the working press. It not only help us go out the office and have fun togather, but also inhance our spirit of team-work.

Before sports – Giving a speech

Before Sports – Raising flag

The staff of Chemshun Ceramics was divided into different teams to attend the five sport programs: Making snowball; Burst balloon war; Cooperative transport balls; You direct, I walk; 4*10mm transport balls race. They were enjoyed the game and fight for team honor.

Burst balloon war

Making snow ball

You direct, I walk

Cooperative transport balls

Our team receive award

Let’s looking forward the next sport games in 2020, welcome to follow us by facebook, linkedin and our website: www.chemshun.com. Pingxiang Chemshun Ceramics Co.Ltd invite excellent you to join us, our email: [email protected]   tel:+86-799-6790781 。

(I) Safety of lifting device during filling random tower packing:

1. All construction personnel must wear safety helmets when entering the tower, personnel outside the tower and on the ground must wear safety helmets, and personnel on the tower must wear safety belts;

2. Safety devices such as the switch and overload alarm display of the elevator must be kept intact, and an empty load inspection must be carried out before daily use. It can only be used after it is normal to prevent any accidents caused by electrical failures;

3. During the lifting process, it is strictly forbidden to stand within the radius of the hanging basket to prevent accidents.

(II) Safety and fire prevention:

1. Fireworks are strictly prohibited when entering the construction site;

2. Electric welding shall not be used during the installation of packing;

(II) Packing installation method:

1. Install the random packing according to the tower equipment diagram to ensure that the packing installation height and quantity are correct;

2. Put 10 meters of tap water into the tower to buffer the force of the packing falling into the tower bottom.

3. The filling material is naturally piled into the tower;

4. When filling, it should always be poured from a certain height away from the filling layer. People should not stand directly on the filling material to prevent the filling material from being deformed by pressure and uneven density. Wooden boards should be laid on the filling material to disperse the force;

5. After each section of filling material is installed, the upper end of the chemical filling material should be checked to see if it is flat. If there is any unevenness, it should be naturally flattened with wooden strips;

6. During the filling process, other debris, packaging bags, etc. are not allowed to be left in the tower together with the filling material.