A cikin limestone-gypsum wet flue gas desulfurization tsarin, kiyaye ingancin slurry yana da mahimmanci ga aminci da kwanciyar hankali na dukan tsarin. Yana tasiri kai tsaye tsawon rayuwar kayan aiki, ingancin desulfurization, da ingancin samfur. Yawancin tsire-tsire masu ƙarfi suna raina tasirin ions chloride a cikin slurry akan tsarin FGD. A ƙasa akwai haɗarin ions chloride da ya wuce kima, tushen su, da matakan inganta matakan da aka ba da shawarar.
I. Haɗari na Maɗaukakin Chloride Ions
1. Gaggauta Lalacewar Abubuwan Karfe a cikin Mai Sha
- Chloride ions suna lalata bakin karfe, suna rushe layin wucewa.
- Babban taro na Cl⁻ yana rage pH na slurry, yana haifar da lalatawar ƙarfe gabaɗaya, ɓarna ɓarna, da lalata damuwa. Wannan yana lalata kayan aiki kamar slurry pumps da masu tayar da hankali, yana rage tsawon rayuwarsu.
- A lokacin ƙirar abin sha, ƙaddamarwar Cl⁻ da aka yarda shine babban abin la'akari. Haƙurin chloride mafi girma yana buƙatar mafi kyawun kayan aiki, haɓaka farashi. Yawanci, kayan kamar 2205 bakin karfe na iya ɗaukar nauyin Cl⁻ har zuwa 20,000 mg/L. Don mafi girma da yawa, ana ba da shawarar ƙarin kayan aiki masu ƙarfi kamar Hastelloy ko na tushen nickel.
2. Rage Amfani da Slurry da Ƙarfafa Amfani da Reagent/Makamashi
- Chlorides galibi suna kasancewa azaman calcium chloride a cikin slurry. Babban maida hankali na ion alli, saboda tasirin ion na yau da kullun, yana hana rushewar farar ƙasa, rage alkalinity kuma yana shafar halayen cirewar SO₂.
- Hakanan ions na chloride yana hana sha ta jiki da sinadarai na SO₂, yana rage tasirin desulfurization.
- Excess Cl⁻ na iya haifar da samuwar kumfa a cikin abin sha, yana haifar da ambaliya, karatun matakin ruwa na ƙarya, da cavitation na famfo. Wannan na iya haifar da slurry shiga cikin bututun hayaƙi.
- Babban adadin chloride kuma yana iya haifar da halayen haɗaɗɗiya mai ƙarfi tare da karafa kamar Al, Fe, da Zn, yana rage tasirin CaCO₃ kuma a ƙarshe yana rage ƙimar amfani da slurry.
3. Tabarbarewar ingancin Gypsum
- Matsakaicin adadin Cl⁻ a cikin slurry yana hana rushewar SO₂, yana haifar da mafi girman abun ciki na CaCO₃ a cikin gypsum da ƙarancin dewatering Properties.
- Don samar da gypsum mai inganci, ana buƙatar ƙarin ruwan wankewa, haifar da mummunan zagayowar da ƙara yawan ƙwayar chloride a cikin ruwa mai tsabta, yana dagula maganinsa.
II. Tushen Chloride ions a cikin Slurry Absorber
1. FGD Reagents, Ruwan kayan shafa, da Kwal
- Chlorides suna shiga tsarin ta waɗannan abubuwan shigar.
2. Amfani da Cooling Tower Blowdown azaman Tsarin Ruwa
- Ruwan busawa yawanci ya ƙunshi kusan 550 MG/L na Cl⁻, yana ba da gudummawa ga tarin Cl⁻ slurry.
3. Rashin Aiki na Electrostatic Precipitator
- Ƙarar ƙurar ƙura da ke shiga cikin abin sha yana ɗaukar chlorides, wanda ke narkewa a cikin slurry kuma ya tara.
4. Rashin isassun Ruwan Shara
- Rashin fitar da ruwan sharar gida a kowane ƙira da buƙatun aiki yana haifar da tarin Cl⁻.
III. Matakan Sarrafa ions na Chloride a cikin Slurry Absorber
Hanyar da ta fi dacewa don sarrafa wuce kima Cl⁻ ita ce ƙara yawan zubar da ruwa na desulfurization yayin da tabbatar da bin ka'idodin fitarwa. Sauran matakan da aka ba da shawarar sun haɗa da:
1. Inganta Amfani da Ruwan Tace
- Rage lokacin sake zagayowar tacewa da sarrafa shigar ruwa mai sanyaya ko ruwan sama cikin tsarin slurry don kiyaye daidaiton ruwa.
2. Rage Ruwan Wanke Gypsum
- Iyakance abun ciki na gypsum Cl⁻ zuwa kewayo mai ma'ana. Ƙara cirewar Cl⁻ yayin dewatering ta hanyar maye gurbin slurry tare da sabon gypsum slurry lokacin da matakan Cl⁻ ya wuce 10,000 mg/L. Saka idanu matakan Cl⁻ slurry tare dainline yawa mitada daidaita yawan fitar da ruwan sha kamar yadda ya kamata.
3. Ƙarfafa Kulawar Chloride
- Gwajin slurry chloride akai-akai kuma daidaita ayyuka dangane da matakan sulfur na kwal, dacewa da kayan aiki, da buƙatun tsarin.
4. Sarrafa Slurry Density da pH
- Kula da slurry yawa tsakanin 1080-1150 kg/m³ da pH tsakanin 5.4-5.8. Lokaci-lokaci rage pH don inganta halayen a cikin abin sha.
5. Tabbatar da Aiki da kyau na Electrostatic Precipitators
- Hana barbashin ƙurar da ke ɗauke da babban adadin chloride shiga cikin abin sha, wanda in ba haka ba zai narke ya taru a cikin slurry.
Kammalawa
Yawan ions na chloride yana nuna rashin isassun magudanar ruwa, wanda ke haifar da raguwar ingancin desulfurization da rashin daidaituwar tsarin. Ingantacciyar kulawar chloride na iya haɓaka kwanciyar hankali da inganci sosai. Don ingantattun mafita ko don gwadawaLonnmeterSamfuran tare da goyan bayan ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararru, tuntuɓar mu don shawarwari kyauta kan hanyoyin auna slurry.
Lokacin aikawa: Janairu-21-2025
