ABOUT LEHAI

ABOUT LEHAI

Focusing on exploring the field of specialized chemical equipment

Company News

Industry News

2024.01.17

Hunan Vacuum Unit: A Leading Player in the Environmental Protection Equipment Manufacturing Industry

Have you ever wondered how environmental protection can be linked to the mechanical manufacturing industry? Hunan Vacuum Equipment Group is a prime example—a company that stands out uniquely in the manufacturing of environmental protection equipment. Hunan Vacuum Equipment Group is a specialized enterprise dedicated to the R&D and manufacture of vacuum technology, with its products widely used in the environmental protection sector. Over the past few decades, as environmental issues have become increasingly severe and public awareness of environmental protection has grown, Hunan Vacuum Equipment Group has gradually risen to prominence. Its product lineup primarily includes vacuum pumps, vacuum systems, and various vacuum equipment. These devices play a crucial role in the environmental protection industry, effectively treating wastewater, exhaust gases, and solid waste, reducing pollutant emissions, and enhancing resource utilization efficiency. Hunan Vacuum Equipment Group’s products are not only highly favored in the domestic market but are also exported to international markets, earning widespread recognition and praise from customers around the world. The products are renowned globally for their high efficiency, reliability, and eco-friendliness. In addition, Hunan Vacuum Equipment Group places great emphasis on technological innovation and product development, continuously introducing new models and advanced technologies to meet the ever-changing demands of the market. At the same time, Hunan Vacuum Equipment Group attaches great importance to quality management and after-sales service. It boasts an experienced and highly skilled team capable of providing customers with timely technical support and solutions.

Image name

View details

Hunan Vacuum Unit: A Leading Player in the Environmental Protection Equipment Manufacturing Industry

2023.07.15

Hunan spray tower custom manufacturer—making your industrial production more environmentally friendly.

Hunan-based custom spray tower manufacturers are here to make your industrial production more environmentally friendly. In industrial production, environmental protection has always been a major concern. To reduce pollutant emissions and improve production efficiency, an increasing number of companies are turning to eco-friendly equipment. In Hunan, there are several specialized custom spray tower manufacturers dedicated to providing businesses with highly efficient and environmentally friendly spray tower solutions. As a common type of exhaust gas treatment equipment, spray towers primarily use sprayed water to wash and adsorb particulate matter and harmful gases from exhaust streams, achieving effective purification. Hunan’s custom spray tower manufacturers specialize in the R&D and production of various types of spray towers, offering personalized customization services tailored to different industrial sectors and specific exhaust gas characteristics. Compared to traditional spray towers, those manufactured by Hunan’s custom spray tower makers boast the following advantages: 1. High-efficiency purification: Utilizing advanced spray technology and high-quality packing materials, Hunan’s custom spray tower manufacturers maximize purification efficiency, ensuring that exhaust gas emissions meet national standards. 2. Energy-saving and environmentally friendly: During exhaust gas treatment, spray towers can recover and recycle some of the water used, significantly reducing water resource waste. Additionally, Hunan’s custom spray tower manufacturers offer energy-efficient models that lower energy consumption and further enhance environmental friendliness. 3. Safe and reliable: Hunan’s spray towers...

Image name

View details

Hunan spray tower custom manufacturer—making your industrial production more environmentally friendly.

2023.07.05

How to Choose a Custom Manufacturer of Hunan Spray Towers That Meets Your Requirements

How to Choose a Custom Spraying Tower Manufacturer in Hunan That Meets Your Requirements? As one of China’s renowned manufacturing hubs, Hunan boasts numerous custom spraying tower manufacturers. However, faced with such a wide array of options, selecting a Hunan-based custom spraying tower manufacturer that meets your specific requirements can be quite confusing. This article will provide you with some helpful tips to assist you in finding the right custom spraying tower manufacturer in Hunan. First and foremost, it’s crucial to choose a manufacturer with extensive experience. Experienced manufacturers are typically better equipped to understand their clients’ needs and offer more professional solutions. They have a deeper understanding of spraying tower design, manufacturing, and installation, ensuring that the products they deliver meet the required quality and performance standards. Second, checking the manufacturer’s qualifications and certifications is an important step in the selection process. A manufacturer with relevant qualifications and certifications is more likely to provide reliable products and services. For example, ISO9001 certification for quality management systems demonstrates that the manufacturer has established effective management capabilities and quality assurance measures, while environmental management system certifications (such as ISO14001) indicate that the manufacturer takes environmental protection seriously. Additionally, understanding the manufacturer’s production capacity and equipment is another key factor in making your choice. A manufacturer equipped with advanced machinery and facilities...

Image name

View details

How to Choose a Custom Manufacturer of Hunan Spray Towers That Meets Your Requirements

2023.06.25

Hunan Spray Tower Custom Manufacturer: The Latest Trends in the Environmental Protection Equipment Manufacturing Industry That You Need to Know

In the environmental protection equipment industry, custom-made spray towers from Hunan have become a topic of great interest. As environmental pollution continues to worsen, more and more businesses and governments are placing greater emphasis on the use and manufacture of environmental protection equipment. In this article, we’ll explore the topic of custom-made spray towers from Hunan and introduce the latest trends in the environmental protection equipment manufacturing industry. Who are the custom-made spray tower manufacturers in Hunan? The custom-made spray tower manufacturers in Hunan are companies specializing in the production of environmental protection equipment. Their primary product is the spray tower—a device used to purify air and exhaust gases. The function of a spray tower is to bring harmful gases into contact with water through fine water mist, thereby achieving air purification. Spray towers manufactured by these Hunan-based custom makers boast advantages such as high efficiency, energy savings, and environmental friendliness, making them highly favored by users. The Latest Trends in Environmental Protection Equipment Manufacturing With the continuous improvement of environmental regulations and growing public awareness of environmental protection, the environmental protection equipment manufacturing industry is also undergoing rapid development. Here are the latest trends in this industry: 1. Environmental protection equipment is becoming increasingly intelligent. As technology continues to advance, environmental equipment manufacturers are starting to leverage smart technologies such as IoT and cloud computing to make their products more intelligent and automated. 2. Environmental equipment manufacturers are placing greater emphasis on product quality and service. As...

Image name

View details

Hunan Spray Tower Custom Manufacturer: The Latest Trends in the Environmental Protection Equipment Manufacturing Industry That You Need to Know

2023.02.21

What are the uses of Hunan ion-exchange columns?

Ion exchange columns can be categorized, based on their application scope, into laboratory ion exchange columns and industrial ion exchange columns. Below, we’ll introduce you to the various applications of Hunan ion exchange columns. If you’re curious, hurry up and take a look! Actually, Hunan ion exchange columns primarily refer to column-type pressure vessels used for ion exchange reactions—they are the exchange devices employed in column-based ion exchange processes. These columns are commonly used in both laboratory and industrial settings. According to their regeneration methods, they can be classified into three types: internally regenerated mixed-bed columns, externally regenerated mixed-bed columns, and externally regenerated anion-resin columns. Based on their application scope, they can also be divided into laboratory and industrial categories. Typically, Hunan ion exchange columns are made of glass, with a length-to-diameter ratio (L/D) ranging from approximately 10 to 30. The upper end of the column is usually fitted with a stopper, while the lower end is designed with either a sintered glass sand plate, glass wool, strip-shaped porous ceramic plates, stainless steel plates, corrosion-resistant plastic mesh fabrics, or glass cloth—all serving as support structures for the ion exchange column. When using Hunan ion exchange columns, it’s important to note that, in addition to the main equipment, auxiliary devices such as storage tanks for acids, alkalis, and finished products, pipeline valves, flow meters, and various measuring instruments are also required. As our factory’s flagship product, we sincerely thank our new and existing customers for their strong support. While ensuring the reliability of our product quality, we also strive to offer favorable prices to our customers. If you have any technical questions about our products, feel free to reach out anytime.

Image name

View details

What are the uses of Hunan ion-exchange columns?

2023.02.13

What is the usage method for Hunan ion exchange columns?

What is the procedure for using an ion-exchange column in Hunan? In analytical work, dynamic switching is commonly employed to separate or enrich certain ions. This exchange method is carried out in an ion-exchange column, and the operational procedure is as follows: (1) Selection and Preparation of Resin: Strong-acid cation-exchange resins and strong-base anion-exchange resins are widely used in chemical analysis. The particle size distribution of commercially available exchange resins is usually not uniform enough; therefore, before use, the resin should be screened to remove particles that are either too large or too small. Alternatively, the resin can be soaked in water to select particles of a specific size, which are then allowed to swell before being set aside for later use. Typically, commercial resins contain certain impurities; thus, prior to use, these impurities must be removed by purification, followed by washing with distilled water until the solution becomes neutral. In this way, hydrogen-form cation-exchange resins containing exchangeable H+ groups or chloride-form anion-exchange resins containing exchangeable Cl- groups on their active functional groups can be obtained. If a sodium-cation exchange resin is required, the hydrogen-form cation-exchange resin can be treated with NaCl.

Image name

View details

What is the usage method for Hunan ion exchange columns?

2023.01.30

What is the principle behind Hunan ion-exchange columns?

The Chemical Dictionary explains the principle and application of Hunan ion-exchange columns. A Hunan ion-exchange column is a device in which cation- and anion-exchange resins, mixed in specific proportions, are placed together to exchange and remove ions from a fluid stream. Hunan ion-exchange column technology is widely used in water treatment applications, including water softening, desalination, production of high-purity water, industrial wastewater treatment, and recovery of heavy metals and precious metals. The water softening process has been extensively applied in boiler systems. Principle of Hunan Ion-Exchange Columns

Image name

View details

What is the principle behind Hunan ion-exchange columns?

2023.01.07

Method for manufacturing a PP reactor

The broad definition of a PP reactor refers to a vessel—whether physical or chemical—in which a stirring impeller is used to facilitate mixing and accelerate chemical reactions. Under the action of the stirring impeller, the reaction solution and solid reactants are thoroughly mixed and reacted within the reactor. Typically, a rotating shaft is vertically installed inside the reactor vessel, and stirring blades are mounted on this shaft to agitate the reactants and promote the reaction. However, if the rotational speed of the shaft becomes too high or the rotation time is prolonged, the shaft may easily swing from side to side, potentially damaging the motor and other components. Moreover, conventional stirring blades often exhibit uneven distribution. So, let’s now explore the technical implementation methods for PP reactors!

Image name

View details

Method for manufacturing a PP reactor

2022.12.23

Structure and Principle of PP Reactors

The structure of PP reaction vessels comes in two types: vertical and horizontal. The vertical stainless steel reaction vessel consists of an upper and lower seal, a cylindrical body, a jacket, a stirrer, and a power source. The central part of the vessel head is open to allow the main shaft to pass through; adjacent to this opening are arranged various functional components such as a feed inlet, a spare port, an observation window, and an inspection well—all designed for feeding materials, observing the reaction process, and facilitating inspection and maintenance. The PP reaction vessel features only one stirrer, whose diameter is slightly smaller than that of the inner cylindrical body. As it rotates, the stirrer ensures uniform mixing of all materials within the vessel. The advantage of the vertical stainless steel reaction vessel is its clean material handling; however, it requires a powerful motor and imposes higher space requirements for factory facilities when used in mass production. Now, let’s take a closer look at the structure and operating principle of the PP reaction vessel!

Image name

View details

Structure and Principle of PP Reactors

2022.12.08

Operating procedures for the PP reactor

In the operation of PP reaction vessels and deep-cold reaction vessels, it is essential to master the correct operating procedures to ensure optimal performance. Let’s now take a closer look at the operating methods for PP reaction vessels! 1. Before using the PP reaction vessel, clean it with a solvent that does not participate in the reaction. After two washes, perform GC analysis. Once the concentration of relevant impurities in the solvent falls below 0.1%, proceed to wash the vessel twice (each time with 20–30 kg) using an anhydrous solvent that does not participate in the reaction, then dry it thoroughly before use.

Image name

View details

Operating procedures for the PP reactor

2022.11.24

Steps for installing mechanical seals on PP reaction vessels

Before using the PP reactor, be sure to close the refrigerant feed valve, then turn on the mixer and add the materials. Next, connect the other steam valves and power supply to the PP reactor. Now, let’s take a closer look at the installation steps for mechanical seals used in PP reactors!

Image name

View details

Steps for installing mechanical seals on PP reaction vessels

2022.11.08

Electroplating Tanks: What are the different types of tanks used in the electroplating process?

Electroplating tanks are used to hold plating solutions for processes such as galvanizing, copper plating, nickel plating, and gold plating. The movable-cathode electroplating tank consists of a steel tank lined with soft PVC plastic, a conductive device, steam-heating tubes, and a cathode-moving mechanism. The tank body can also be made with a steel lining and rigid polyvinyl chloride. The choice of tank structure depends on the properties and temperature of the plating solution. So, what types of plating tanks are there in the electroplating process?

Image name

View details

Electroplating Tanks: What are the different types of tanks used in the electroplating process?
< 1...456...8 >