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Summary of Control Valve Standards (4)
Valve Standards Summary: Part IV
This article is the fourth part of the Valve Standards Summary series, outlining the key international standards for valves used for process control.
American Petroleum Institute
The American Petroleum Institute (API) is a standards-setting body focused primari......
1035 
Jessica
GB 11914-89 Determination of chemical oxygen demand in water quality Dichromate method
Determination of Chemical Oxygen Demand of Water by Potassium Dichromate Method
Introduction:
The Chemical Oxygen Demand (COD) of water is an important indicator that reflects the amount of organic microbes and pollutants in the water, and is widely used as an important assessment index of water......
GB/T 15262-94 Determination of sulfur dioxide in ambient air Formaldehyde absorption-pararosaniline spectrophotometric method
GB/T 15262-94 Determination of sulfur dioxide in ambient air—Methanol absorption-pararosaniline spectrophotometric method
1. Introduction
Sulfur dioxide (SO2) is a colorless, odorless gas, which is mainly from industrial and domestic combustion sources. It is one of the major causes of air poll......
GB/T10624-1995 high-purity argon technical indicators
GB/T10624-1995, Technical Index for High Purity Argon
High purity argon is a gas used in arc welding and other industrial processes. It is a colorless, odorless and inert gas that produces a protective and non-combustible atmosphere during welding, cutting, and other metal-fabrication processes. ......
GB 15322-94 Technical requirements and test methods for combustible gas detectors
GB 15322-94 Combustible Gas Detectors Technical Requirements and Test Methods
It is most important to detect combustible gases in various industrial production processes, such as chemical and petrochemical industries, power plants, military radar and other related areas. GB 15322-94 Combustible G......
The chemical principle of surface treatment phosphating treatment
The Chemical Principles of Phosphating Treatment for Metal Surface Treatment
Metal surface treatment technology has become more and more widely used in the production and processing of metal components in recent years. Phosphating is a metal surface treatment technology that is often used. It is ......
hot corrosion
，标题为 Hot Corrosion
Hot Corrosion
Introduction
Hot corrosion is a form of corrosion that occurs when certain conditions are present. It is an aggressive form of accelerated corrosion caused by combining high temperatures (313-843 K) and water or moisture within the atmosphere, often containing......
Sulfation Roasting
Calcination or calcining is a thermal treatment process that uses extremely high temperatures to change the chemical composition of materials. Generally, calcination refers to the process of heating a solid material to a very high temperature to cause the physical and chemical changes that are not......
Artificial additional air gap crystallizer
Artificial air gap crystallizer
The artificial air gap crystallizer is a new device designed to induce crystallization in a controlled and uniform manner. It consists of a hollow cylinder with an inner diameter, filled with a liquid medium, usually water. The cylinder is then sealed and heated un......
Advantages of Ladle Injection Magnesium Desulfurization Compared with Other Desulfurization Processes
Blast Furnace Gas Desulfurization by Magnesia Injection
Abstract
The purpose of this paper is to compare the advantages and disadvantages of blast furnace gas desulfurization by magnesia injection with other desulfurization technologies. Blast furnace gas is the main by-product of the blast furn......
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