Page 28 of Pressure Vessel News

Optimizing Plate Heat Exchanger Transfer Efficiency (Part Two)

1. Improving Heat Transfer: Finding the Right Balance   Enhancing the average flow rate within the flow channel has the potential to augment the heat transfer coefficient and diminish the heat exchanger area. Nevertheless, this comes with trade-offs such as increased heat exchanger resistance, elevated power consumption by the circulating pump, and heightened equipment costs. Given that the power consumption of the circulation pump is proportional to the third power of the medium flow rate,...

Jan 02, 2019 Industrial News

Optimizing Plate Heat Exchanger Transfer Efficiency (Part One)

In recent years, plate heat exchangers have evolved into a mature technology with high heat transfer efficiency, compact design, lightweight construction, low temperature resistance coefficients, and convenient disassembly. This versatile heat exchanger type finds extensive use in the heating industry, offering various assembly methods such as detachable, welded, brazed, and plate-and-shell configurations. Detachable plate heat exchangers, known for easy disassembly, cleaning, and flexible area...

Dec 27, 2018 Industrial News

Corrosion Resistance in Air Cooled Heat Exchanger: Testing and Prevention

Corrosion rate testing plays a pivotal role in assessing the corrosion resistance of metals, offering valuable insights into changes in weight, structure, shape, surface state, and mechanical properties. In the context of air cooled heat exchanger tube bundles, three common corrosion rate tests—electrical resistance, weight loss, and linear polarization methods—provide essential data for understanding and managing corrosion of air cooled heat exchanger. 1. Corrosion Rate Test  ...

Dec 06, 2018 Industrial News

Corrosion Protection for Air Cooled Heat Exchangers (Part Two)

3. Erosion Corrosion   Erosion corrosion, encompassing erosion and wear corrosion, results from the high-speed relative motion between a metal surface and a fluid medium. The eroded metal surface appears bright, typically taking the form of grooves, valleys, or teardrops, devoid of corrosive deposits. Unlike corrosion under other stresses, factors influencing erosion corrosion are multifaceted. In addition to the chemical composition, microstructure, mechanical properties, surface roughness,...

Dec 04, 2018 Industrial News

Corrosion Protection for Air Cooled Heat Exchangers (Part One)

Air cooled heat exchangers, pivotal equipment in the petrochemical industry for heat exchange processes, face challenges in their tube bundles due to harsh conditions involving high temperatures, pressures, and corrosive environments. The corrosion performance of these tube bundles directly influences the safety and stability of equipment operation. This article meticulously analyzes common corrosion types affecting tube bundles and proposes protective measures aimed at enhancing the lifespan of...

Dec 04, 2018 Industrial News

Understanding Plate Heat Exchanger Scaling and Effective Cleaning Methods

Plate heat exchangers play a crucial role in various industrial processes, but they are susceptible to scaling issues that can significantly impact their efficiency. This article delves into the causes of scaling and explores effective cleaning methods, focusing on mechanical and chemical approaches. Causes of Plate Heat Exchanger Scaling During the operation of plate heat exchangers, the presence of calcium, magnesium, and carbonate in water leads to the formation of hard scale on the heating surface....

Nov 26, 2018 Industrial News

Steel Storage Tanks: Types, Classification and Construction

Steel storage tanks, crucial for storing liquids or gases, are indispensable across industries like petroleum, chemical, metallurgy, grain, oil, food, and transportation, contributing significantly to the national economy. Many enterprises rely on these storage tanks for normal product manufacturing. In China, oil storage primarily utilizes above-ground metal tanks. This article explores key aspects of vaulted storage tanks, internal floating roof tanks, and horizontal storage tanks commonly used...

Nov 24, 2018 Industrial News

Several Protective Measures for Maximizing Heat Exchanger Performance

Efficient heat exchanger design and operation are crucial for maximizing performance and extending the lifespan of equipment. This article outlines practical process design considerations, the use of corrosion-resistant materials, and effective protective measures to ensure optimal heat exchanger functionality. 1. Practical Process Design To enhance heat exchanger efficiency, consider the following process design tips:   Position steam on the tube side to prevent high-speed gas passage through...

Nov 09, 2018 Industrial News

Challenges in Heat Exchangers: Fouling and Corrosion Insights

Heat exchangers play a crucial role in the chemical industry, but issues like fouling and corrosion within these systems can result in compromised heat exchange efficiency, increased costs, and potential safety hazards. To address fouling and corrosion problems in heat exchangers, the following common causes are outlined for reference: 1. Fouling Issues in Heat Exchangers Fouling in heat exchangers poses significant challenges, affecting efficiency and performance. The fouling issues can be mainly...

Nov 08, 2018 Industrial News

Coal Chemical Industry Soars: Record Profits in 2018 First Half in 5 Years

  The financial statements for the first half of 2018 revealed the status of various industries in light of global economic factors, such as the increase in the global oil price. Among the industries, the petrochemical sector experienced a recovery, and the coal chemical industry also demonstrated positive performance. Since the beginning of the year, there has been a notable rebound in the stocks of the coal chemical industry. According to data from iFinD, the overall net profits of 48 coal...

Oct 17, 2018 Industrial News

Pressure Vessel Inspection: Safety and Reliability Guidelines

A pressure vessel serves as a sealed enclosure designed for the storage of gases or fluids. Operating at pressures significantly higher than the ambient pressure, these vessels pose potential dangers and can lead to fatal accidents. Therefore, it is imperative to conduct thorough inspections and safety tests on pressure vessels. Here are various aspects related to the inspection process: 1. External Inspection (In-Service Inspection)   The primary focus during external inspection, also known...

Sep 20, 2018 Industrial News

Efficient and Reliable Cement Storage Silos for Batching Plants

Cement storage silos, also known as bulk cement tanks, play a crucial role in concrete batching plants by providing secure storage for bulk materials like grain, cement, and pulverized fuel ash. Equipped with material level measuring systems and anti-blockage devices, these silos ensure efficient material handling and prevent solidification. Paired with spiral delivery pumps, they facilitate material transport to various locations. Easy to install, safe, and reliable, these silos serve as ideal...

Aug 02, 2018 Industrial News