1-General Standard Name
Full-automatic chemical dosing device, boiler circulating water complete dosing equipment. Alternative names: Boiler feed water dosing device, circulating water scale inhibitor dosing station, water treatment full-automatic metering dosing skid-mounted equipment.
2- Overall Structure & Core Technical Features
1. Overall Structural Form
Skid-mounted integrated base design. Chemical tank, agitator, metering pump, pipeline valve group, filter, safety valve and control cabinet are all integrated on common steel base. Delivered as complete set with modular skid mounting; on-site only needs connecting chemical inlet, process pipeline and power supply.
2. Core Components & Functions
1：Vertical anticorrosive chemical tank Store ammonia, hydrazine, phosphate, scale inhibitor, corrosion inhibitor and other water treatment chemicals.
2：Electric agitator Stir chemicals to prevent precipitation and stratification and ensure uniform liquid concentration.
3：Metering dosing pump Accurately and quantitatively convey chemicals with continuously adjustable dosing capacity.
4：Pipeline valve group Stop valve, check valve, safety valve and needle valve for on-off, pressure relief and maintenance isolation.
5：Y-type filter Filter chemical impurities to protect metering pump and rear pipelines.
6：Liquid level sensor Real-time monitoring of tank liquid level with automatic low-level alarm for chemical replenishment reminder.
7：pH / Conductivity online instrument Collect process water quality signals as basis for automatic dosing.
8：PLC full-automatic control cabinet Automatically adjust dosing flow according to water quality parameters, local/remote control and DCS linkage.
3. Working Principle
Chemicals are stored in anticorrosive tank and stirred evenly, then quantitatively sent by metering pump into boiler feed water, boiler water and circulating cooling water systems. Online instruments collect real-time water quality indexes, and PLC automatically adjusts dosing frequency and flow to stably control water pH, alkalinity and oxygen content, inhibiting pipeline scaling, corrosion and microbial growth, realizing unattended full-automatic dosing operation.
3-Application in Russian Petrochemical & Energy Industry
1.Thermal power plants & thermal stations Feed water ammonia dosing, hydrazine dosing, boiler water phosphate dosing and circulating water scale inhibitor & bactericide dosing; widely adopted in new-built and renovation projects.
2.Petrochemical & natural gas plants Anticorrosion and scale inhibition dosing for circulating water and process water systems to ensure continuous operation of petrochemical units.
3.Coal chemical & fine chemical industry Indispensable for water quality regulation of process water and circulating water in ammonia synthesis and methanol plants.
4.Urban heating & central air conditioning Special for anticorrosion and scale prevention of central heating pipe networks and large park circulating water systems in northern Russian cities.
