Rake Dryer: Working Principle and Industry Application Guide of High - efficiency Vacuum Drying Equipment

2025-10-22

I. Equipment Overview The rake dryer is a horizontal batch - type vacuum drying equipment designed specifically for heat - sensitive, easily oxidizable, and paste - like materials. Its core advantage lies in the low - temperature and airtight drying environment, which can effectively retain the active ingredients of the materials and avoid the risk of oxidation. The equipment uses a combined heating structure of a jacket and a stirring device, supporting heat transfer with various media such as steam, heat - conducting oil, or hot water. The material can be selected from stainless steel or carbon steel (Q235) to meet the corrosion - resistance and hygiene requirements of different industries. II. Working Principle and Technological Breakthroughs After the materials are added from the top of the drying chamber, the main shaft drives the double - helical ribbon rake teeth to rotate at a constant speed (7 - 8 revolutions per minute), causing the materials to continuously turn in the axial and radial directions. During the stirring process, the materials are in full contact with the heating jacket, the moisture evaporates due to heat, and is quickly discharged by the vacuum pump. The drying efficiency is more than 40% higher than that of traditional equipment. The technological innov...

Analysis of the Structure Principle and Application of Tubular Heat Exchangers

2025-10-18

Tubular heat exchangers (also known as shell-and-tube heat exchangers) are widely used heat exchange equipment in the industrial field. Their core function is to transfer heat between two fluids through the tube wall, which is suitable for heating, cooling, or condensation processes in industries such as chemical, petroleum, power, and food. Core Structure and Function 1. Shell: As the main framework, the shell encloses the tube bundle and accommodates the shell-side fluid. Its design needs to withstand high temperature and pressure, and the common materials are carbon steel or stainless steel. 2. Tube Bundle and Tube Sheet: The tube bundle is composed of multiple parallel heat exchange tubes, which are fixed at both ends by drilled tube sheets to form independent tube-side channels. The materials of the tube bundle can be selected from copper, titanium, etc., according to the corrosiveness of the fluid. 3. Head and Inlets/Outlets: The heads located at both ends of the shell are responsible for sealing the fluid and are equipped with inlets and outlets for the tube-side fluid to ensure the directional flow of the medium. 4. Baffles: The baffles installed inside the shell can change the flow path of the shell-side fluid, prolong the contact time, and enhance the turbulent ...

Analysis of Evaporation Equipment Types and Application Guide: How to Efficiently Select Suitable Industrial Equipment

2025-10-15

Evaporation equipment is the core device for solution concentration, crystallization, or solvent separation in industrial production. It removes solvents through the evaporation process and is widely used in industries such as chemical engineering, pharmaceuticals, food processing, and environmental protection. This article will provide readers with comprehensive application guidance from three aspects: equipment types, selection key points, and industry trends. I. Mainstream Evaporation Equipment Types and Characteristics 1. MVR Evaporator (Mechanical Vapor Recompression Evaporator) The MVR evaporator uses a mechanical compressor to pressurize and heat the secondary steam for recycling, significantly reducing energy consumption. It is suitable for high - salt wastewater treatment, biopharmaceuticals, and chemical production. For example, in chemical wastewater treatment, its energy - saving efficiency is over 40% higher than that of traditional evaporation technologies, and it reduces the reliance on additional heat sources. 2. Multi - effect Evaporator The multi - effect evaporator uses the steam generated in the previous effect to heat the subsequent units by connecting multiple evaporation units in series, which is suitable for large - scale concentration scenarios. D...

Stirring Tanks: Analysis of Core Functions, Structural Features, and Multi - industry Applications

2025-10-11

As a core equipment in the industrial mixing field, stirring tanks, with their high - efficiency material handling capabilities and flexible process adaptability, are widely used in more than ten industries such as chemical, pharmaceutical, food, and environmental protection. This article will systematically analyze the comprehensive value of this equipment from aspects such as working principle, core structure, functional advantages, and actual application scenarios. I. Core Functions and Working Principles Stirring tanks achieve the physical and chemical treatment of materials through mechanical forces. The core functions include mixing, dissolving, dispersing, heat transfer, and reaction control. Its operating mechanism is based on three mechanical effects: 1. Convective Circulation: The rotation of the stirrer creates a large - scale flow of materials, eliminating the difference in components within the tank. 2. Shearing and Crushing: The high - speed movement of the blades generates strong shear forces, breaking up solid agglomerates and improving the dispersion uniformity. 3. Molecular Diffusion: At the micro - level, it promotes the spontaneous migration of substance molecules to achieve a precise homogenization effect. II. Structural Composition and Mater...

Comprehensive Analysis of the Working Principle and Core Applications of Reactors

2025-10-08

I. Definition and Core Structure of Reactors A reactor is a core device for achieving material mixing, chemical reactions, and physical changes. Its core structure consists of a kettle body, a transmission system, a stirring device, a temperature control module, and a sealing device. Some special models are also equipped with a photocatalytic system or a high - pressure control unit. The kettle body is usually made of stainless steel, carbon steel, or composite materials to meet the characteristics of corrosion resistance, high - temperature resistance, and high - pressure resistance. Among them, the stirring system improves the reaction uniformity through designs such as anchor type, paddle type, and turbine type, while the jacket, coil, or electric heating device realizes precise temperature control. II. Main Types and Technical Characteristics 1. Tank Reactors Suitable for high - temperature and high - pressure environments, they can achieve real - time adjustment of reactant concentration, pressure, and temperature through an automated control system. They are commonly used in the preparation of polymer materials such as synthetic resins and rubbers. 2. High - Pressure Reactors Equipped with multi - layer stirring paddles and reinforced sealing structures, they ca...

A Comprehensive Analysis of the Working Principle and Applications of Plate Heat Exchangers: The Core Technology of High - efficiency Heat Exchange

2025-10-04

As an efficient heat transfer device, the plate heat exchanger has become a core component in the thermal management systems of industrial and civil fields due to its unique structure and performance advantages. This article will conduct an in - depth analysis of its working principle, application scenarios, and operation points to help readers comprehensively understand the core value of this key device. I. Analysis of Industry Application Scenarios 1. HVAC Systems In the fields of central air - conditioning and district heating, plate heat exchangers achieve precise temperature control through rapid heat exchange between refrigerants and water media. Their compact design can be effectively integrated into boiler systems to complete the cyclic heating of hot water and waste heat recovery, with the system energy efficiency increasing by about 40%. 2. Chemical Production Processes The petrochemical industry relies on its stable processing ability for corrosive media, achieving precise temperature control of acid - base solutions through multi - stage plate combinations. A typical application is the circulating cooling system of polymerization reactors, where the temperature fluctuation can be controlled within ±1℃. 3. Food and Pharmaceutical Processing The h...

High - efficiency Industrial Wastewater Treatment Equipment: Technical Analysis and Application Guide for Wastewater Evaporators

2025-10-01

In the field of industrial wastewater treatment, wastewater evaporators, as the core technological equipment for dealing with high - salinity and high - COD wastewater, have become key equipment in highly polluting industries such as chemical engineering, pharmaceuticals, and food processing, thanks to their diverse process forms and remarkable environmental benefits. This equipment achieves the goals of wastewater volume reduction, resource utilization, and up - to - standard discharge through evaporation concentration and crystallization separation. I. Core Technologies and Process Forms Wastewater evaporators mainly include processes such as triple - effect evaporators, falling - film evaporation, forced - circulation evaporation, and low - temperature evaporation. Among them, the triple - effect evaporation system is widely used due to its high energy - efficiency. This system consists of three sets of series - connected evaporators, condensers, and salt separators. When treating wastewater with a salt content of 3.5% - 25% and a COD concentration of 2000 - 10000 ppm, the energy utilization rate can be increased to more than three times that of traditional single - effect evaporators. During the operation of the triple - effect evaporator, the wastewater first enters the firs...

Shell and Tube Condensers: A Comprehensive Analysis of the Principles and Applications of High-Efficiency Heat Exchange Equipment

2025-09-27

As a key device in the field of heat exchange, shell and tube condensers are widely used in industrial production. Their main function is to quickly transfer the heat in gases or vapors, causing the medium to condense into a liquid state. Its core structure consists of parallel tubes and an external shell, and the condensation process is achieved through the efficient heat transfer between the heat source and the cooling medium. I. Working Principle and Structural Design When the shell and tube condenser is in operation, high-temperature gases or vapors flow through the inside of the tubes, while the cooling medium (such as water or air) circulates in the shell. Heat is transferred through the tube wall to the cooling medium, causing the temperature of the heat source to drop and gradually liquefy. Its high efficiency is due to the use of high thermal conductivity materials such as copper and aluminum, which can accelerate heat transfer. In addition, some shell and tube condensers are equipped with cooling fins to increase the heat dissipation area, or use fans to enhance air convection, further optimizing the heat dissipation effect. Structurally, shell and tube condensers can be divided into three categories: water-cooled, air-cooled, and evaporative: 1. Water-cooled: It re...