Heat exchange system angin heat carrier atan tui hmangin scale chu awlsam takin heat exchange tubes chunglamah a innghat a ni. Descaling hi hun rei tak chhung tih a nih loh chuan heat exchange tubes chunglama scale siam chu a thim zual zel ang a, heat transfer efficiency a nghawng ang a, fully automatic heat exchanger pawh a tichhia ang. Chuvangin, a hman hunah chuan a .Automatic heat exchanger a awm vek bawk.,regular descaling neih a ngai a ni. Chuti a nih chuan, descaling method hman tlanglawn ber berte chu engte nge ni?
manual emaw mechanical emaw hmanga siam a ni. Pipe te chu a khar deuh a, a bawlhhlawh chuan manual emaw mechanical emaw hmangin scraping leh wire brushing ang chi hmangin tihfai theih a ni a, compressed air, high-pressure water, leh steam te chu tihfai nan a inkawp thei bawk. Pipe te chu nasa taka bawlhhlawh emaw, block vek emaw a nih chuan pipe water drill (pipe auger tia hriat bawk) chu hman theih a ni.
Flushing method pahnih a awm a. A hmasa ber chu countercurrent flushing a ni a, a tlangpuiin operation lai emaw, downtime hun rei lo te chhunga hman thin a ni. Thil hmanrua chu tihchhiat a ngai lo va, mahse countercurrent bypass line chu pre-install a ngai a ni. Hetiang method hi scaling a nasat loh chuan a tangkai zawk. A pahnihna chu high-pressure water jet flushing a ni. Rotating water jet head hrang hrang hi heat exchanger hrang hrang, rigid emaw flexible emaw atan hman a ni a, 10 MPa atanga 200 MPa thleng adjustable pressure a awm bawk. High-pressure water jet hi pipe inkar, pipe chhunga bawlhhlawh paih nan leh shell-a bawlhhlawh paih chhuahna atan a tha hle. High-pressure water jet flushing of heat exchangers hi a hlawk hle a, hman a ni nasa hle bawk.
1. Inbuatsaih hmasak (scale characteristics leh hmanrua dinhmun chiang zawka siam) .
Scale Sampling leh Analysis: Laboratory test hmangin a component pawimawh ber berte chu ruat la, tihfai dan tur thlang rawh.
Equipment Status Inspection: Heat exchange tube te hi a chhe em, a leak nge a block tih enfiah la, chu chu pressure gauge difference hmanga teh theih a ni ang
Cleaning plan siam rawh: Analysis result atanga tihfai dan tur ruat la, emergency plan siam rawh.
2.Core tihfai dan: Chemical tihfai dan .
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Scale chi hrang hrang . |
Thianghlimna atana hman tur agents te . |
Thil hman tur hman tur . |
Fimkhur tur . |
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Carbonates (80% aia tam chhiar dan) . |
Hydrochloric acid (5%-10% concentration), citric acid (8%-12%) a awm bawk. |
Carbon steel, stainless steel . |
Hydrochloric acid hi corrosion awm lohna turin corrosion inhibitor (hexamethylenetetramine ang chi) hmanga dah a ngai a; Citric acid hi acid-sensitive material atan a tha hle. |
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Sulfate/Silicate (thlipui nei) . |
Sulfamic acid (10%-15%) + fluoride (Auxiliary) a awm a. |
Stainless steel, copper alloy . |
Silica scale solidify loh nan fluoride concentration chu khauh taka control a ngai ( 2% aia tlem emaw 2% aia tlem emaw) a ni tur a ni. |
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Mixed scale 1000 a ni. |
Compound tihfai nana hman tur (hydrochloric acid + citric acid + corrosion inhibitor ang chi) |
Carbon steel, stainless steel . |
Corrosion resistance verify turin test tlemte a ngai a (coupon test: corrosion rate 0.1mm/year aia tlem emaw a tlukpui emaw a tling) |
3.Tisa lam tihfai (mild scale emaw sensitive materials emaw atan a tha) .
Taksa tihfai hian chemical agents a mamawh lo va, scale a lo chhuahna hmun emaw, material chu acid-resistant a nih loh emaw scene-ah a tha hle. (High-pressure water jet tihfai, mechanical scraper tihfai, leh ultrasonic tihfai te hi duhthlan tur a ni)
4.Cleaning hnua pawm leh nitin anti-scaling measures .
Thianghlimna (cleaning effect) pawm (visual inspection, performance test) .
Nitin anti-scaling measures (scale regeneration tihtlem, unit tui inlet-a water softener dah)
Heat exchanger tube-a scaling hi tui quality tha lo vang a ni ber a, chu chuan scale leh grease a siam a, chu chu coking, precipitation, leh adhesion angin a lo awm a ni. Chemical descaling hman dan tur chu scaling substances te thlirlet leh test hmasak a ngai a ni. Scaling substances awm dan hriatthiamna chuan tihfai nan solvent dik tak a siam thei ang. Alkaline tihfai hi sulfate leh silicate scale atan hman a ni tlangpui a, acid tihfai erawh carbonate scale atan hman a ni thung. Grease leh coking hi sodium hydroxide, sodium carbonate, laundry detergent, liquid detergent, sodium silicate, leh tui hmanga siam cleaning solution hmangin ratio bik hmangin paih theih a ni.
Fully automatic heat exchanger chhunga scale lakchhuah nan descaling method hrang hrang hman theih a ni. Descaling method tin hian characteristic hrang hrang an nei a, chuvangin i dinhmun tak tak a zirin descaling method dik tak i thlang thei ang. Chubakah, fully automatic heat exchanger enkawl leh service-naah, regular descaling bakah, fully automatic-a failure rate tihhniam nan maintenance measure dang pawh a ngai bawk.Heat Exchanger 1000 a ni.leh a rawngbawlna nun pawh a tizau bawk.