3. Stripping Valves for Purification Unit 3.1 Process Introduction and Characteristics The CO conversion process is an important purification step in the coal chemical industry. In the conversion process, to reduce the NH₃ content in the conversion condensate system, a condensate stripping system is established. The low-temperature conversion condensate has a high NH₃ content and needs to be sent to the stripping tower to remove dissolved NH₃. The low-temperature conversion condensate enters the...
Selection of Valves for Harsh Working Conditions in Coal Chemical Industry Read
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Introduction Swing check valves play a crucial role in various piping systems by preventing backflow and ensuring the efficient operation of fluid transport systems. They are designed to allow fluid to flow in one direction while automatically closing to prevent reverse flow, thus protecting equipment and maintaining system integrity. In this article, we will explore what swing check valves are, the different types available, installation considerations, and their advantages and disadvantages. What...
Understanding Swing Check Valves: A Comprehensive Overview Read
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Abstract: After nearly 20 years of development, the coal chemical industry has gradually advanced and improved, achieving major breakthroughs in key equipment and technology. This paper focuses on the use of valves in black water systems of gasification units in the coal chemical industry under harsh working conditions. It analyzes the valve performance issues during unit operation, considering the process flow and actual usage, and proposes corrective measures. 1. Overview The coal...
Black Water Valves for Gasification Units Read
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Abstract: The ball valve was modeled in 3D using Solidworks software, its structural characteristics were analyzed, and the casting process was designed. The casting process was simulated using Huazhu CAE casting simulation software, and the process was optimized based on the simulation results. The simulation results show that, in the casting process, the risers at the shaft holes on both ends of the ball valve are too small; the shrinkage feeding channel is uneven, and the distance between...
Research on Casting Process of Ball Valve Castings for Hydropower Equipment Read
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Gate Valve Overview Gate valves are an indispensable equipment in the industrial field and are widely used to control the flow of liquids and gases. It works by allowing or blocking the flow of fluid through a gate (or wedge) that rises and falls. In the closed state, the gate is effectively sealed with the seat, preventing the flow of fluid completely. This design allows gate valves to provide excellent sealing and the lowest pressure drop when fully opened, which is why they are favored. Whether...
Key Differences Between NRS and OS&Y Gate Valves Read
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Pilot operated valves are used in industrial control systems to precisely regulate fluid flow and pressure in various processes. Due to their high precision control and high flow handling capacity, pilot operated valves have become the preferred equipment in many industries. Definition of Pilot Operated Valve Pilot operated valve is a control device that operates a larger main valve through a small control valve. Usually, it uses pressure signals or electrical signals to adjust the state of the...
Functions and Selection Guide for Pilot Valves in Industrial Control Read
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Abstract: Natural gas is one of the main energy sources in China and is widely used worldwide. One of the primary methods of transporting natural gas is through pipelines. Pipeline transport is not only convenient and fast but also highly safe. It is currently one of the most commonly used methods for energy transport. However, pipeline transport still faces issues such as significant energy waste and leakage during transmission. As a key device for controlling the inflow and outflow of natural...
Maintenance of Long-Distance Natural Gas Pipeline Valves Read
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Block and bleed ball valves are important components in industrial systems and are widely used in gas and fluid handling processes that require reliable isolation and safe venting. This article will explore in depth the functions, main features, advantages, disadvantages, and selection criteria of these valves. With a comprehensive understanding of these aspects, users can make more informed decisions for their industrial systems. What are Block and Bleed Ball Valves and Bleed Ball Valves? Block...
A Comprehensive Overview of Block and Bleed Ball Valve Read
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Full bore check valves, also known as full-port check valves, are an important fluid control device specifically designed to prevent backflow without significantly limiting flow. It ensures that the fluid maintains maximum flow efficiency in the piping system while minimizing pressure drop. The working principle of the full bore check valve is: when the inlet pressure exceeds the outlet pressure, the valve automatically opens to allow the fluid to flow forward; When the outlet pressure is higher...
Everything You Should Know About Full Bore Check Valves Read
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