|Industrial dust treatment equipment series|
|Welding fume exhaust gas treatment series|
|Grinding polishing dust removal equipment|
|Stand-alone dust collector|
|Spiral duct and accessories series|
How to do the anticorrosion work of the dust removal system pipes?
Piping system corrosion protection is an important measure to ensure the normal operation and service life of the system, especially for pipeline systems that transport corrosive gases. The main method of anticorrosion is to use anticorrosive coatings and anticorrosive materials.
Anticorrosive coatings are composed of three parts: the main film-forming materials (synthetic resin, natural resin, drying oil and synthetic resin modified oil)), auxiliary film-forming materials (filler, thinner, curing agent, plasticizer, desiccant, improvement Agents, etc.).) And secondary film-forming materials (coloring pigments, anticorrosive pigments).
Coating protection can be divided into two types of internal corrosion protection and external corrosion protection. Internal corrosion protection is to coat the inner wall of pipes and equipment with a coating to isolate the corrosion of the internal corrosive medium. External anticorrosion is to paint on the outer walls of pipes and equipment to isolate the corrosive medium from the atmosphere and play a decorative role. The application purpose is different, and the requirements for selecting the coating are also different.
When conveying corrosive gaseous media in the dedusting equipment pipeline system, anticorrosive materials can be used to treat the pipeline and equipment. Commonly used anticorrosive materials include rigid polyvinyl chloride plastic, glass steel and other composite lining materials.
Rigid PVC plastic (hard? Torr 0 has the advantages of strong acid and alkali resistance, good physical and mechanical properties, smooth surface, easy secondary processing and molding, and convenient construction and maintenance. However, its operating temperature requirements are below 601, linear expansion The coefficient is large.
FRP is lightweight, high strength, good chemical resistance, good electrical insulation, 90% temperature resistance? 1 8.01, easy to process. However, the price is relatively expensive and it smells good during construction.
7号钢聚氯乙烯等复合防腐材料。 In addition, stainless steel plate, plastic composite steel plate and glass. No. 7 steel and other composite anticorrosive materials can also be used . Pipes and equipment can also be lined with rubber or cast stone.
How to do the anticorrosion work of the dust removal system pipes? What are the explosion-proof measures for the dust removal system pipes?
When the conveying medium contains flammable gas or flammable and explosive dust, the following explosion-proof measures shall be taken in the design of the pipeline system.
Strengthen the detection and control of combustible substance concentrations
In order to prevent the concentration of flammable substances in the pipeline system from reaching the explosive concentration, the necessary detection equipment should be set up to continuously monitor the working status of the system and realize automatic alarm. When designing the system air volume, in addition to meeting the purification requirements, the fuel concentration in the system should also be checked. If necessary, the design air volume should be increased to ensure that the fuel concentration in the transport gas is below the lower explosive concentration limit.
Eliminate fire sources
Strictly control the sources of ignition that may cause an explosion ... If explosion-proof fans are used, direct or shaft transmission is used; explosion-proof electrical components, switches, and motors are used; foreign objects such as iron filings are removed before entering the system.
Fire and explosion protection measures
When designing a flammable gas pipeline, the minimum flow velocity in the pipeline should be greater than the flame propagation speed during gas combustion to prevent flame propagation. The pipeline is equipped with a flame arrestor with multilayer metal mesh or gravel; in a local location (dead corner) of the pipeline system Install explosion-proof holes or explosion-proof doors; connection water seals and overflow water seals used in gas pipelines can also be discharged to a certain extent.
When the pipes and equipment are not properly sealed, combustion and explosion may occur due to gas or oil leakage. Therefore, the tightness of the equipment system must be guaranteed.
The piping system cannot be absolutely closed, so the workshop ventilation must be strengthened to ensure that the concentration of combustible substances in the workshop does not reach dangerous levels. In addition, for a workshop that emits a large amount of flammable gas in the event of an accident with corpse equipment or a malfunction of the system, an emergency exhaust system should be provided for emergency use.
Dongguan Yuchen Machinery Co., Ltd. provides customers with various industry pollution control problems, professionally provides solutions and the most advantageous services, and creates a clean and beautiful environment for each enterprise!
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