As new coal-fired power plants come online to meet the growing demand for electricity in the United States and around the world, there is an increasing need to clean plant emissions to meet clean air regulations. Special pumps and valves help to efficiently operate these scrubbers and handle the abrasive slurry used in the flue gas desulfurization (>FGD) habka.

Iyada oo dhammaan horumarka tignoolajiyada ee horumarinta ilaha tamarta cusub ee qarnigii la soo dhaafay, hal shay oo aan wax badan iska beddelin waa ku tiirsanaanta shidaalka fosil, gaar ahaan dhuxusha, si loo dhaliyo koronto. In ka badan kala badh korontada Maraykanka waxay ka timaadaa dhuxusha. Mid ka mid ah natiijooyinka dhuxusha gubanaya ee dhirta tamarta ayaa ah sii deynta sulfur dioxide (SO 2) gaaska.

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TL FGD Pump

Iyada oo ku saabsan 140 warshad koronto oo cusub oo dhuxusha ah oo ku yaal dhuumaha Mareykanka oo keliya, welwelka ku saabsan la kulanka xeerarka hawada nadiifka ah ee halkan iyo adduunka oo dhan ayaa horseed u ah warshado koronto oo cusub iyo kuwa jira - oo lagu qalabeeyay qiiqa sare ee nidaamyada "xoqidda". SO2 ayaa hadda laga saaray gaaska flue iyadoo la adeegsanayo habab kala duwan oo loo yaqaan 'flue gas desulfurization' (FGD). Marka loo eego Maamulka Macluumaadka Tamarta, oo siiya tirakoobka tamarta dowladda Mareykanka, yutiilitida ayaa la filayaa inay kordhiyaan tas-hiilaadkooda FGD ilaa 141 gigawatts oo awood ah si ay ugu hoggaansamaan dadaallada gobolka ama federaalka.

Nidaamyada FGD waxay isticmaali karaan hababka qalalan ama qoyan. Habka FGD ee qoyan ee ugu caansan wuxuu isticmaalaa xal xoqid ah (sida caadiga ah slurry dhagax nuurad ah) si uu SO2 uga nuugo qulqulka gaaska ka baxsan. Habka FGD ee qoyan wuxuu ka saari doonaa in ka badan 90% SO2 ee gaasta flue iyo walxaha qayb ka ah. Fal-celin kiimikaad oo fudud, dhagaxa nuuradda ku jira slurry waxa loo beddelaa kaalshiyam sulfite marka slurry dhagaxa limestone uu la falgalo gaaska flue ee nuugeeyaha. Qaybo badan oo FGD ah, hawada waxaa lagu afuufo qayb ka mid ah nuugista oo oksidhiye kalsiyum sulfite ilaa kalsiyum sulfate, ka dibna si fudud ayaa loo sifeyn karaa oo laga saari karaa si ay u sameeyaan qalajiye, walxo xasiloon oo lagu tuuri karo qashinka ama la iibin karo sida alaabta lagu sameeyo sibidhka, gidaarka gypsum ama sida wax lagu daro bacriminta.

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Bamka dareeraha ah

Xulashada bamka ee FGD

Sababtoo ah slurry dhagax-dhagaxeedkan wuxuu u baahan yahay inuu si hufan ugu socdo geeddi-socod adag oo warshadeed, xulashada bambooyin sax ah iyo mashiinnada - iyadoo isha lagu hayo wadarta kharashka wareegga nolosha iyo dayactirka - waa muhiim.

Habka FGD wuxuu bilaabmaa marka quudinta nuuradda (dhagaxa) la yareeyo cabbirka iyada oo lagu burburiyo mashiinka kubbadda ka dibna lagu qaso biyaha haanta sahayda dareeraha ah. Biyo-mareenka (qiyaastii 90% biyaha) ayaa markaa lagu shubaa haanta nuugista. Maaddaama joogteynta slurry slurry ay u janjeerto inay is beddesho, xaaladaha nuugista ayaa dhici kara, taas oo keeni karta dalool iyo bam-beel.

Xalka bamka caadiga ah ee codsigan waa in lagu rakibo bamka dareeraha carbide si uu ugu adkaysto xaaladahan. Bambooyin biraha sibidhka ah ayaa loo baahan yahay in la soo saaro si ay ugu adkeystaan ​​adeegga dheecaanka xoqida ee ugu daran waxaana sidoo kale loogu talagalay inay noqdaan kuwo aad u fudud in la ilaaliyo oo ammaan ah. Baahida injineernimada bamka ayaa ah fiimyada xajka culus iyo shafka, qaybaha derbiga dhumuc weyn leh iyo qaybo si fudud loo beddeli karo. Wadarta tixgalinta qiimaha meertada nolosha ayaa aad muhiim u ah marka la tilmaamayo matoorada xaaladaha adag ee shaqada sida adeega FGD. Bambooyin sare oo chromium aloy ah ayaa ku habboon sababtoo ah pH-ka wasakhaysan ee dareeraha.

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Bamka dareeraha ah

The slurry must be pumped from the absorber tank to the top of the spray tower, where it is sprayed downward as a fine mist that reacts with the upward-moving flue gas. Since pumping volumes typically range from 16,000 to 20,000 gallons of slurry per minute with heads between 65 and 110 feet, rubber-lined >bambooyin slurry waa xalka ugu fiican ee bamgareynta. Mar labaad, si loo daboolo tixgalinta qiimaha meertada nolosha, bambooyinku waa in lagu qalabeeyaa dhexroor-ballaaran si ay u hooseeyaan xawaaraha shaqada iyo cimriga dheer ee cimriga, iyo caag-goboleedka lagu bedeli karo dayactir degdeg ah. Warshada tamarta dhuxusha lagu shido ee caadiga ah, laba ilaa shan bambooyin ayaa loo isticmaali doonaa munaaraddii buufinta kasta.

Maadaama slurry lagu soo ururiyo xagga hoose ee munaaradda, bambooyin dheeraad ah oo caag ka samaysan ayaa loo baahan yahay si ay u rartaan taangiyada kaydinta, balliyada dabada, goobaha lagu daweeyo qashinka ama makiinada shaandhada. Iyada oo ku xidhan nooca habka FGD, moodooyinka kale ee bamka ayaa diyaar u ah dareeraha dareeraha ah, ka soo kabashada qashinka hore iyo codsiyada kaydka saliidda.

If you want to know more information about the best FGD pump, welcome to >nala soo xiriir maanta ama codso xigasho.