Low-Temperature Oxygen and PSA (Pressure Swing Adsorption) are two common air separation technologies.

Low-temperature oxygen is used to separate oxygen and nitrogen in the air through low-temperature fractionation. The process exploits differences in the boiling points of air to separate gas components by cooling the air to a liquefied state and then gradually raising the temperature. Under low temperature conditions, oxygen in the air liquefies earlier, while nitrogen remains in a gaseous state. The liquid oxygen is then separated by distillation and collected.

 PSA uses the selective adsorption properties of adsorbents to separate oxygen and nitrogen. In the PSA oxygen generator process, air passes through a pressure swing adsorption tower composed of adsorbents. Adsorbents have different adsorption capacities for oxygen and nitrogen. During the adsorption stage, the adsorbent selectively adsorbs nitrogen while oxygen passes through. Then, during the pressure shift phase, the pressure is reduced so that the adsorbent releases the adsorbed nitrogen, making it available for adsorption sites again.

 Therefore, cryogenic oxygen and PSA are two different air separation processes. Low-temperature oxygen mainly relies on the boiling point difference of the gas, while PSA nitrogen generator uses the selective adsorption of the gas by the adsorbent to achieve separation. The choice of which process to use depends on the needs and technical requirements of the specific application.

Cleanroom Wall System: Enhancing Cleanroom Efficiency

Cleanrooms play a crucial role in various industries that require controlled and sterile environments, such as cleanroom manufacturing companies, industrial clean rooms, clean room laboratories, and clean rooms for semiconductor and pharmaceutical applications. The foundation of an efficient cleanroom lies in its wall systems, particularly the cleanroom wall panels and modular partition walls.

Cleanroom wall panels, often referred to as sandwich panels, are specifically designed to meet the stringent requirements of cleanroom environments. These panels consist of a high-pressure laminate (HPL) sandwiched between two layers of durable materials. The HPL surface provides a clean and smooth finish, making it easy to maintain cleanliness and preventing microbial growth.

Leading cleanroom panel manufacturers focus on producing high-quality panels that offer excellent insulation, air-tight seals, and structural stability. These specialized cleanroom panels are engineered to meet industry standards and regulations, ensuring the integrity of the cleanroom environment.

Modular cleanroom panels revolutionize the construction process by providing flexibility and ease of installation. These panels can be easily assembled and disassembled, allowing for quick modifications and reconfigurations of cleanroom layouts. With their modular design, cleanroom partitions can be effortlessly created, enabling the creation of separate areas within the cleanroom for different operations.

Cleanroom partition walls not only provide structural support but also aid in maintaining the cleanliness of the controlled environment. The partition walls are designed to minimize air leakage, ensuring an optimal airflow pattern and controlling contamination risks. These walls can be equipped with integrated pass-throughs, windows, and utilities such as electrical outlets and ventilation systems, further enhancing the functionality of the cleanroom.

With the right cleanroom wall system in place, cleanroom operators can achieve superior contamination control, maintain critical cleanliness levels, and promote efficient workflow. The selection of suitable cleanroom panels and partition walls should take into account factors such as material compatibility, fire resistance, sound insulation, and overall system integrity.

In conclusion, cleanroom wall systems, including cleanroom wall panels and modular partition walls, are essential components that contribute to the success of cleanroom environments. They provide a durable, customizable, and efficient solution for cleanroom manufacturing companies, industrial clean rooms, cleanroom laboratories, and cleanrooms for semiconductor and pharmaceutical applications. By investing in high-quality cleanroom wall systems, companies can ensure the integrity of their operations and meet the stringent requirements of their respective industries.

Our modern manufacturing and scientific research fields have increasingly high demands for a clean environment. In the process of building a clean room, the choice of clean walls is crucial. Fortunately, there are many excellent cleanroom panel manufacturers that offer a variety of high-quality cleanroom panels to suit different needs.

Clean room panels are widely used in pharmaceutical, biotechnology, food processing, aerospace and other industries to ensure a dust-free and sterile environment during production processes. Clean room walls are the foundation for building a clean room, and their quality and performance directly determine the effectiveness of the clean room.

In order to meet the clean room needs of various industries, we are fortunate to have many professional clean room panel manufacturers. They are committed to developing and manufacturing high-quality cleanroom panels that meet customers' specific requirements.

Cleanroom panels are a multi-functional wall material with features such as dustproof, mildewproof, fireproof, and sound insulation. These boards usually use high-density core materials, such as magnesia boards or rock wool boards, and the outer surfaces are often coated with anti-static and anti-corrosion coatings to ensure the overall performance of the clean room.

Cleanroom panel manufacturers offer various types of cleanroom panels such as cleanroom wall panels, cleanroom partitions, and cleanroom wall systems. These panels can be customized according to customer needs to ensure that the functionality and effectiveness of the cleanroom are maximized.

Cleanroom panel manufacturers also provide customers with comprehensive pre-sales and after-sales services, including cleanroom design consultation, installation guidance and maintenance support. Their professional team will provide the best solution based on project requirements and ensure that the quality and performance of clean room panels meet industry standards.

All in all, cleanroom panel manufacturers play a vital role in the cleanroom construction process. They provide high-quality clean room panels that can meet the clean room requirements of different industries. Whether it is clean room wall panels, clean room partitions, or clean room wall systems, they can provide customers with customized solutions. By cooperating with clean room panel manufacturers, we can build a more complete and efficient clean environment and promote the development of technology and manufacturing.

HPL Cleanroom Wall: Efficient and Hygienic Solution for Clean Environments
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The design and construction of cleanrooms require meticulous attention to detail to maintain the highest standards of cleanliness and contamination control. One essential component in creating a clean and controlled environment is the HPL (High-Pressure Laminate) cleanroom wall system. With its exceptional properties and versatility, HPL is becoming increasingly popular in cleanroom applications.

HPL false ceilings and walls offer a range of benefits that make them ideal for cleanroom environments. The HPL ceiling acts as an overhead barrier, effectively sealing the area and preventing contaminants from entering the controlled environment. Its durable and non-porous surface is resistant to dirt, bacteria, and chemical agents, ensuring easy cleaning and maintenance.

The cleanroom HPL partition walls provide a modular and flexible solution for space division within the cleanroom facility. These partition walls are designed to seamlessly integrate with the cleanroom infrastructure, creating separate zones while maintaining the required cleanliness levels. The HPL partition walls offer excellent sound insulation properties, helping to minimize noise transmission between different areas of the cleanroom.

The cleanroom HPL walls themselves are constructed using high-pressure laminates that are engineered to meet the stringent hygiene standards of clean environments. These panels are smooth, homogeneous, and non-shedding, preventing the release of particles into the air. The HPL material is also resistant to scratches, impact, and chemical agents, ensuring long-lasting durability.

The HPL partition wall system offers versatility in design and customization. It can be tailored to meet specific cleanroom requirements, providing options for different finishes, colors, and accessories. This flexibility allows for easy integration of utilities, such as electrical wiring, ventilation ducts, and plumbing, within the cleanroom walls.

Furthermore, the HPL partition system is designed for easy installation and reconfiguration. With its modular nature, the cleanroom layout can be adjusted and modified as needed, providing adaptability to changing operational needs. The quick installation process minimizes downtime during construction or renovation projects.

To ensure the highest quality and performance, it is crucial to source HPL cleanroom wall systems from reputable manufacturers with expertise in cleanroom solutions. These modular clean room manufacturers understand the unique requirements of clean environments and provide certified products that comply with industry standards.

In conclusion, the utilization of HPL cleanroom wall systems, including HPL false ceilings and partition walls, is a smart choice for creating efficient and hygienic cleanroom environments. With their excellent properties of durability, cleanliness, and customization, HPL walls contribute to maintaining the integrity and performance of cleanroom facilities. By working with trusted cleanroom solution providers, such as modular laboratory buildings manufacturers, organizations can ensure the successful implementation of cleanroom projects that meet the stringent requirements of their industries.

What is a Multi-layer Radio Shuttle Car? And what’s the working principle of it?

Hi, in today’s blog, I hope to be able to introduce you to the Multi-layer Radio Shuttle Car. Multi-layer Radio Shuttle Car is an advanced logistics equipment that is widely used in the warehousing and logistics industry. By combining with WCS (Warehouse Controlling System) and WMS (Warehouse Managing System), it can bestly save manual time and costs of an enterprise while mostly improve high density storage utility rates. It is efficient, intelligent and flexible, and can greatly improve the storage efficiency and logistics operation efficiency of the warehouse.

Our Multi-layer Radio Shuttle Car adopts advanced automation technology and can automatically complete the storage and retrieval tasks of goods in the whole warehouse system. It can flexibly adjust its travel path according to the layout of the warehouse and the characteristics of the goods, thereby saving time and space to the maximum extent. Our multi-layer radio shuttle car are also equipped with advanced sensors and navigation systems, which can accurately identify the location and status of goods to ensure the safety and integrity of the goods.

This kind of multi-layer radio shuttle car has multi-layer storage function and can store and manage multiple types of goods at the same time. Its storage levels can be adjusted according to customers’ actual needs to meet the storage needs of different warehouses. Besides, multi-layer radio shuttle car can also carry out intelligent sorting and distribution according to the characteristics and needs of goods, improving the efficiency and accuracy of logistics.

Such kind of multi-layer radio shuttle car also has good scalability and customizability. It can be customized according to the needs of different warehouses to meet the special needs of different industries and enterprises. Our multi-layer radio shuttle car can also be seamlessly connected with other logistics equipment and systems to realize automation and intelligence of the entire logistics process.

In short, the kingmoresmart multi-layer radio shuttle car is an advanced logistics equipment that is not only efficient, but also intelligent and flexible. It can greatly improve the storage efficiency and logistics operation efficiency of the warehouse, saving costs and improving competitiveness for enterprises. And it is also a great trend to realize automated management of warehouse and storage system in the future!

If you are interested in our multi-layer radio shuttle car, we will be very happy to provide you with more detailed information and technical support.

Thank you for your attention and look forward to further cooperation with you!

Lightning protection projects and facilities must be installed inside and outside the building to prevent lightning intrusion. However, problems of varying degrees will occur during the actual construction process, including the following situations;
1. Construction not according to drawings
According to regulations, during the construction of buildings, construction should be carried out in strict accordance with the construction drawings that have passed technical review. It is not allowed to add or delete items at will, cut corners, etc. However, during the inspection of the lightning protection device  construction site, it was found that some projects were not carried out according to the design drawings. During construction, the distance between the down conductors set exceeds the design range, and the down conductors are not set at the corners of the building.
2. Irregular welding of lightning protection device
Lightning protection grounding welding of buildings always accompanies the whole process of construction. The quality of welding directly determines the quality of lightning protection projects. In building design, basic steel mesh is often used as the grounding body. In actual inspection, problems existing in it are: Welding, the welding between the main steel bars of the down conductor and the grounding body, and the welding between the main bars of the ground beam, the overlap length often does not meet the specified standards; the specifications of the lap steel bars do not meet the requirements.
3. No reserved points for equipotential connection
The lightning protection effect of a building mainly depends on whether the equipotential connections formed between the non-charged metal objects and the charged metal objects in the building can become a unified whole. Therefore, during the construction process of the building, the equipotential reserve end should be set with enough points at necessary locations as reserves.
4. Failure to install surge protector as required

The settings of surge protectors, low-voltage power distribution grounding forms, shielding measures, installation techniques, and pipeline laying are inconsistent with the standard requirements for lightning protection design. The low-voltage power distribution system introduced into the building should be installed with corresponding surge protectors and floor lighting systems (electrical equipment). Surge protectors should be installed in the power control cabinet. Cable TV, broadband network, and telephone lines in buildings should be equipped with signal arresters when entering the building.

Jinli  is a company integrating R&D, production, and sales. Since its establishment in 2006, it has 18 years of experience in producing surge protectors. The lightning protection department consists of a technical department and a construction department. Among them, there are 10 technicians and 20 construction workers. The construction personnel have been selected and trained at all levels and operate in strict accordance with the construction requirements to avoid appeal issues.

Reducing the working pressure of the air separation equipment can reduce the unit energy consumption of the product. The working pressure of the full low-pressure air separation equipment is close to the working pressure of the lower tower, while the working pressure of the small air separation equipment is much higher than the pressure of the lower tower. The working pressure is low, and the unit cooling capacity generated by expansion is also small. In order to maintain the balance of cooling capacity, it is first required that the unit cooling loss is also small. For large-scale air separation equipment, the unit cooling loss decreases as the unit capacity increases. At the same time, a smaller hot end temperature difference is also selected during design. The unit cooling loss due to incomplete heat exchange is relatively small, which is a good way to reduce the working pressure. Favorable conditions were created.

In addition, the low working pressure requires the expander to have high efficiency so that it can produce a larger cooling capacity under the same pressure difference. As the capacity of the turboexpander increases, the optimal rotation speed decreases and the efficiency increases. Therefore, it is most suitable for large-scale air separation equipment, making it possible to reduce working pressure.

For small air separation equipment, the cooling loss is relatively large. Even if a turbine expander is used, the speed is as high as 105r/min or more, the efficiency is low, and the maintenance and management requirements are very high. In addition, for large-scale air separation equipment, the amount of expansion is small relative to the amount of process air. The expanded and refrigerated air can still participate in distillation and extract oxygen from it. If a small air separation equipment adopts a low-pressure process, because the amount of expansion gas required to generate refrigeration capacity is large and cannot be fully involved in the distillation, the oxygen extraction rate will be very low, and the energy consumption per unit product will still be high. Therefore, the full low-pressure process is most suitable for large and medium-sized air separation plants.

At present, with the adoption of molecular sieve adsorption purification and booster turbine processes, as well as the advancement of plate-fin heat exchanger technology, the minimum capacity of low-pressure air separation equipment has been designed to 340m3/h oxygen production and 800m3/h nitrogen production (KDON -340/800), the exhaust pressure of the air compressor is 0.59MPa.

What is the pressure swing adsorption molecular sieve purification process, and what are its characteristics compared with the temperature swing adsorption purification process?

Molecular sieves have the function of selective adsorption of mixed gases, and their adsorption capacity changes with changes in temperature and pressure. Its adsorption capacity increases at low temperature and high pressure, and decreases at high temperature and low pressure. Temperature swing adsorption (TSA) is based on the principle that molecular sieves adsorb at room temperature and desorb at high temperatures, while pressure swing adsorption (PSA) is based on the principle that molecular sieves adsorb at high pressure and desorb at low pressure.

The so-called pressure swing adsorption molecular sieve purification process is to use the molecular sieve pressure swing adsorption process to remove water, carbon dioxide, and hydrocarbons in the air, eliminating the need for air pre-cooling systems and regeneration heaters, as shown in Figure 15.

Use 1% to 1.5% purified air to regenerate molecular sieves. The general switching cycle is 9 to 14 minutes. There are 2 to 6 adsorbers according to the specifications of the air separation unit. The adsorbent capacity is 4 times that of the TSA adsorbent of similar air separation units. Each adsorbent is The container is equipped with 6 switching valves.

Compared with TSA, the advantages of PSA are:

     1) Simplify the process and eliminate the need for equipment such as air cooling towers, evaporative cooling towers, low-temperature water pumps, and regenerative heaters;

     2) There is no steam consumption required for TSA heating regeneration. For a 60,000m3/h air separation unit, 1,800kg/h of steam (approximately 1,000kW·h/h) can be saved.

Its disadvantages are:

     1) Air switching loss is 1% to 1.5% and consumes 400kW more power;

     2) The switching cycle is short and the switching valve is prone to failure;

     3) It is difficult to completely desorb the regenerated molecular sieve at room temperature, which will affect the adsorption performance of the molecular sieve and bring some harmful gases into the air separation unit, which will have a certain impact on the safety of large-scale air separation units;

     4) The investment is slightly larger.

What is a crop? Which crops were first cultivated by the Chinese?

In daily life, rice, soybean, wheat and corn are all major crops in my country. They are essential foods in our daily diet and play an important role in our daily life. So does anyone know which rice, wheat, corn, and soybean are the earliest cultivated by the Chinese?

Rice: It is one of the staple foods for half of the world's population at present. In addition to the daily consumption of rice, it can also be used for brewing and sugar making as industrial raw materials. Rice husks and rice straws can be used as livestock feed.

Corn: native to Central and South America, my country's main producing areas are in the northeast, north and southwest mountainous areas.

Soybeans: most commonly used to make various soy products, extract soybean oil, brew soy sauce and extract protein. Soybean has been cultivated in China for 5,000 years and is one of the important food crops.

Wheat: It belongs to the grass family, and the Mesopotamia is the first area in the world where wheat was grown.

Among rice, wheat, corn, and soybeans, rice is the earliest cultivated by the Chinese. Rice has appeared in the Yangtze River Basin of China as early as 7,000 years ago.

Crops are green plants cultivated by human beings called crops, while crops cultivated in larger areas are called crops. At present, there are about 1,500 species of plants cultivated by humans, which can be roughly divided into three categories: crops, horticultural crops and forest trees.

The basis and method of crop classification:

1. Classification according to the physiological and ecological characteristics of crops

1. According to the requirements of crops for temperature conditions

Temperature-loving crops: The temperature and accumulated temperature required in the whole growth period are high, and the minimum temperature for growth and development is 10 °C, such as rice, corn, cotton, sorghum, millet, peanut, tobacco, sugarcane, sesame, jute, kenaf Wait;

Cold-resistant crops: The temperature and accumulated temperature required for the whole growth period are relatively low, and the minimum temperature for their growth and development is about 1-5 °C, such as wheat, barley, rye, oats, rape, broad beans, and glutinous seeds.

2. According to the response of crops to photoperiod

Long-day crops: crops that are suitable for growth and development under long-light conditions and can promote development by extending the light are called long-day crops, such as wheat, barley, rye, rape, etc.

Short-day crops: crops that are suitable for growth and development under long-dark conditions and can promote development by extending the dark time are called short-day crops, such as rice, corn, cotton, sorghum, peanut, soybean, tobacco, jute, raw hemp Wait.

Neutral crops: There are no strict requirements on the length of light, such as peas, buckwheat, etc., which are called neutral crops.

Fixed-day crops: The length of sunshine needs to be controlled within a certain period of time to complete its growth cycle. For example, some varieties of sugarcane can only bloom under the conditions of 12 hours and 45 minutes of sunshine length.

3. According to the characteristics of crops' carbon dioxide assimilation pathway

Three-carbon (C3) crops: The carbon dioxide compensation point of photosynthesis is high, and there is strong photorespiration, such as rice, wheat, cotton, soybean, and tobacco.

Four-carbon (C4) crops: The carbon dioxide compensation point of photosynthesis is low, and the photosynthetic intensity is higher than that of three-carbon crops under high temperature and strong light, such as corn, sorghum, sugarcane, etc.

Crassulaceae (CAM) crops: stomata open at night, absorb carbon dioxide, and store it in the plant. During the day, the pores are closed, and the carbon dioxide in the plant is used for photosynthesis. Its plants include sedum, sisal, pineapple, orchid, etc.

2. Classification according to the characteristics of agricultural production

1. The sowing period is divided: spring crops, summer crops, autumn crops, winter crops;

2. Classification of sowing density: densely planted crops and row crops;

3. Harvest season division: summer crops, autumn crops;

4. Stem height division: tall crops, dwarf crops, creeping crops

5. Classification of root growth characteristics: tap root crops, fibrous root crops, and root crops

3. According to the combination of use and botanical system

1. Food crops

Cereals: barley, wheat, rice, corn, sorghum, millet, chestnut

Legume crops: soybean, mung bean, pea, broad bean

Potato crops: sweet potato, potato, taro

2. Cash crops

Fiber crops: cotton, kenaf, ramie

Oil crops: rape, peanut, sunflower, sesame

Sugar crops: sugar cane, sugar beet

Favorite crops: tobacco, coffee, tea

3. Feed and green manure crops

Legumes: Aozi, Alfalfa, Vetch, etc.;

Poaceae: Sudan grass, ryegrass, brome grass, etc.,

Others: red weed, water hyacinth, water lotus, water peanut, etc.

4. Special crops

The main ones are: reed, mat grass, mint, spearmint, mulberry, rubber, pepper, star anise, cinnamon, etc.

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In recent years, with the emergence of XP600 print head, DX5 print head has gradually withdrawn from the market. XP600 has been rejected and misunderstood since it appeared, and is now slowly being accepted. Why?

Everyone knows that XP600 is actually used to replace DX5, so in the design of xp600, there are many similarities with DX5.

1. The printing effect is very similar between the two above, and the naked eye can hardly tell the difference.

2. Above the printing speed, the printing speed of xp600 is slightly slower than that of dx5, but there is no big difference.

3. In terms of service life, DX5 is generally about 1 year, and xp600 is generally 8 months. There are also some people who replace the print head for about 3 months. This is mainly about how to use and maintain the print head.

4. In terms of price, the price of DX5 is 5-6 times that of XP600, that is, you can buy 5-6 pcs of sinodigitech XP600 print heads if you buy one DX5 print head. The price difference is clear at a glance.

5. XP600 Eco solvent printing machine are also cheaper than DX5 Eco solvent printing machine, and the various configurations are different, and the prices are also different.

Many people will buy products that suit them based on the price/performance ratio. XP600 is undoubtedly their best choice. Coupled with the continuous increase in the price of dx5, many people will choose XP600.

There are certain requirements for the quality and price of flex printing machine in India market, and high-quality and low-cost products are the most needed in each market. Let’s take a look at the views of our Indian customers.

Recently, we received feedback from our customers in India and sent us videos and pictures to express their recognition of our machines.