Application of chemical cleaning method
Chemical cleaning in electric power industry
Power plant ash discharge pipeline, ash conveying pipeline cleaning, power plant condenser cleaning, power plant boiler cleaning, oil cooler cleaning, backwater pipeline cleaning, steam pipe network cleaning, cooling tower mud cleaning, crystallizer cable factory cleaning, dust collector water system cleaning, transformer water cooling system cleaning, refrigeration unit cleaning, heat exchanger cleaning, oil circuit control system cleaning, deaerator cleaning, steam turbine cleaning, air preheater cleaning.
Chemical cleaning in chemical industry
Cleaning the following equipment in chemical fertilizer, pesticide, coating, additive, rubber, plastic, chemical fiber, photosensitive material, reagent, additive, organic chemical industry, inorganic chemical industry, fine chemical industry and other enterprises: boiler cleaning, heat conduction oil furnace cleaning, reactor jacket cleaning, scale cleaning of circulating cooling water system, sludge stripping cleaning, air compressor cooler cleaning, cooler cleaning, heat exchanger cleaning, evaporator cleaning, condenser cleaning and injection molding machine cleaning. Cleaning of absorption tower, reaction tower, regeneration tower, synthesis tower, stripping tower, cooling tower and carbonization tower.
Chemical cleaning in petrochemical industry
Scale cleaning of cooling water system, heat exchanger cleaning, boiler cleaning, storage tank cleaning, oil pipeline cleaning, steam pipeline cleaning, desliming cleaning, atmospheric system anticorrosion, air compressor cleaning, oil storage tank cleaning, diesel oil storage tank cleaning, heavy oil storage tank cleaning, water storage tank cleaning, material storage tank cleaning and gas storage tank cleaning.
Chemical cleaning in pharmaceutical industry
Condenser cleaning, pipeline cleaning, reactor water jacket cleaning, mixer cleaning, heat exchanger cleaning, condenser cleaning, reactor cleaning, filter cleaning, evaporator cleaning, compressor cleaning, storage tank cleaning, boiler cleaning, distiller cleaning, central air conditioning cleaning, air duct cleaning and fan pipeline cleaning.
Chemical cleaning of textile and chemical fiber industry
Fouling cleaning, boiler cleaning, refrigerator condenser cleaning, central air conditioning cleaning, aluminum fin cleaning, cooling pipeline cleaning, ion exchanger cleaning, printing and dyeing machine cleaning, drum cleaning, dye vat cleaning, water supply and drainage pipeline cleaning, slurry pool cleaning, gas pipeline cleaning, gas holder cleaning, cooler cleaning, evaporator cleaning, humidifier nozzle cleaning, and humidified water system cleaning.
Chemical cleaning of papermaking printing
Paper mill black liquor evaporator cleaning, black liquor scale cleaning, boiler cleaning, pulp conveying pipeline cleaning, water conveying pipeline cleaning, sewage pipeline cleaning, heater cleaning, printing machine cooling system cleaning, air conditioning system cleaning, digester cleaning, pulp sterilization and anticorrosion.
Chemical cleaning of cement building materials industry
Scaling cleaning, heat exchanger cleaning, condenser cleaning, floor cleaning, conveying line cleaning, material box cleaning, cooling tank cleaning, preheater cleaning, rotary furnace cleaning, container cleaning, boiler cleaning, extruder cleaning and cooler cleaning.
Chemical cleaning in metallurgical industry
Mining equipment: air compressor cleaning, diesel engine cooling system cleaning. Concentrator: filter cleaning and pipeline cleaning. Oxygen making equipment: cleaning of circulating water pipes, coolers, cooling towers, storage tanks and air compressors. Sintering plant: water cooling system cleaning, air compressor cleaning, nitrogen compressor cleaning, oxygen compressor cleaning, oxygen pipeline cleaning, nitrogen pipeline cleaning. Mill: heat exchanger cleaning: water cooling system scale cleaning, oil system cleaning. Ironmaking plant: iron smelting furnace cleaning, water cooling system scale cleaning. Steelmaking plant: water cooling system scale cleaning, oil system cleaning. Coking plant: heat exchanger cleaning, gas pipeline cleaning, process pipeline cleaning and primary cooler cleaning. Ferroalloy factory: water cooling system scale cleaning, smelting furnace cleaning. Non-ferrous metallurgy: boiler cleaning, electric furnace cleaning, flash smelting furnace cleaning, dilution furnace cleaning, converter cooling water system cleaning, air separation equipment cleaning, intermediate frequency furnace cleaning, high frequency furnace cleaning and sintering furnace cleaning.
Chemical cleaning of food industry
Fermentation tank cleaning, fermentation tank heat exchange coil scale cleaning, bottle washing machine cleaning, hot and cold water system cleaning, boiler cleaning, production line cleaning, condenser cleaning, storage tank cleaning, cooler cleaning, crystallizer cleaning, cooling tower cleaning, evaporation tank cleaning and cold water system scale cleaning.
Chemical cleaning in machinery industry
Boiler cleaning, central air conditioning cleaning, air cooler cleaning, air compressor cleaning, hydraulic press cooling system cleaning, extruder cleaning, mold cooling system cleaning, surface cooler cleaning.
Chemical cleaning of catering industry
Steam steamer cleaning, water boiler scale cleaning, water bath furnace cleaning, tea furnace scale cleaning, ice machine scale cleaning, various water system scale cleaning, biological slime stripping cleaning, heat exchanger cleaning.
Chemical cleaning in transportation industry: ships: boiler cleaning, oil pipeline cleaning, seawater desalination system cleaning, oil tank cleaning, flasher cleaning, water storage tank cleaning, air cooler cleaning, fresh water cooler cleaning, seawater cooler cleaning. Vehicles: carbon deposit cleaning of internal combustion engine, cooling water system cleaning, vehicle appearance cleaning, vehicle water tank cleaning, cylinder water jacket cleaning, nozzle cleaning, lubrication system cleaning, water boiler scale cleaning, tea stove scale cleaning, locomotive radiator cleaning.
Chemical cleaning of coal industry
Pipelines: hot water supply pipe, underground water pipe cleaning, underground hydraulic system cleaning; Mechanical processing plant: rust removal and corrosion prevention of rails and coal loaders; Power plant: boiler cleaning, air preheater cleaning; Air compressor station: air compressor cleaning and heat exchanger cleaning.
Chemical cleaning in petroleum exploitation industry
Boiler cleaning, heat exchanger cleaning, oil pipeline cleaning, casing, conduit, water injection pipeline cleaning, oil pump cleaning, diesel engine cooling system scale cleaning, heating pipeline cleaning.
Chemical cleaning of nuclear industry
Cleaning of radioactive pollution facilities and devices; Air conditioning system cleaning.
Chemical cleaning in tobacco industry
Dryer cleaning, boiler cleaning, heat exchanger cleaning, steam pipeline cleaning, water supply pipeline cleaning, sewage pipeline cleaning, air conditioning water system descaling cleaning, humidified water system cleaning, air compressor cleaning.
Chemical cleaning of public facilities
Pipelines: water pipeline, gas pipeline, sewage pipeline cleaning, heating pipe network cleaning, radiator cleaning and descaling, heating system cleaning, heating system heat exchanger cleaning, air conditioning system cleaning; Boiler: steam boiler cleaning, hot water boiler cleaning and tea boiler cleaning; Water heater: solar water heater cleaning, gas water heater cleaning, electric water heater cleaning and heat exchanger cleaning.
Cleanliness of aviation and navigation industry
Aircraft cleaning, airport runway cleaning, ship cleaning, dock cleaning, terminal central air conditioning cleaning, ventilation pipe cleaning, fan coil cleaning.
Chemical cleaning in refrigeration and air conditioning industry
Cleaning and descaling of water chillers, cleaning of central air conditioner, cleaning of scale in chilled water and cooling water system, cleaning of condenser, cleaning of sterilization and slime in cooling tower, cleaning of fan coil and air duct; Refrigerated ice machine group.
Chemical cleaning process
1. Loop cleaning
Loop cleaning is to use the original two parallel ash discharge pipes to form a loop, and form a loop system with the cleaning pump station, add a certain concentration of acidic cleaning solution, and circulate cleaning in the ash water pipeline, and continuously replenish acid when the acidity drops to a certain extent. For a short distance single gray water pipeline, if conditions permit, temporary pipeline can be laid to form a loop for cleaning. The process needs to be carried out in the shutdown state, which is complicated and costly.
2. Open circuit cleaning
When cleaning, two ash pipes cannot form a loop, and only one ash pipe can be used for open circuit cleaning. The method is to connect one end of the ash pipe with a cleaning device, continuously prepare a certain concentration of pickling solution in a liquid preparation tank, and continuously or intermittently inject it into the ash pipe. This process needs to add a cleaning device when it is stopped, and the cost is high.
3. Don't stop chemical cleaning
In this process, under the condition of normal ash conveying without stopping, a certain amount of acid liquor is continuously injected into the ash conveying pipe, and at the same time, a certain amount of corrosion inhibitor and pipeline stripper are injected into the ash conveying pipe for open circuit cleaning. The main function of cleaning AIDS is to promote the reaction between acid liquor and ash scale in acid liquor with a certain concentration and flow rate, at the same time, increase the solubility of carbon dioxide in water, reduce the generation of gas resistance and ensure the cleaning quality of ash pipes.
The operation method is: before cleaning, estimate the required acid amount according to the total scale in the pipeline, and then calculate the acid adding speed and corrosion inhibitor and pipeline stripper adding speed for cleaning the ash conveying pipeline according to the ash water flow and acidity. During cleaning, samples are taken at the sampling point at the front end of the ash pipe every 30 minutes to detect the acidity, and the acidity is strictly controlled by adjusting the acid adding flow. In the later stage of cleaning, the pH value is sampled at the end of the ash pipe every 15 minutes. When the pH value reaches a certain value and remains unchanged for 30 minutes, it can be judged that the cleaning is over.