Na limestone-gypsum wet flue gas desulfurization usoro, ịnọgide na-enwe àgwà nke slurry dị oké mkpa maka nchekwa na kwụsiri ike ọrụ nke dum usoro. Ọ na-emetụta ngwa ngwa ndụ ogologo oge, nrụpụta desulfurization, yana ịdị mma sitere na ngwaahịa. Ọtụtụ ụlọ ọrụ ọkụ na-elelị mmetụta nke ion chloride na slurry na sistemụ FGD. N'okpuru ebe a bụ ihe egwu nke oke ion chloride, isi mmalite ha na usoro nkwalite ndị akwadoro.
I. Ihe ize ndụ nke oke chloride ion
1. Accelerated corrosion of metal Components in the Absorber
- Chloride ion na-emebi igwe anaghị agba nchara, na-akụda oyi akwa passivation.
- Ọnụnọ dị elu nke Cl⁻ na-ebelata pH nke slurry, na-eduga na corrosion metal izugbe, nrụrụ crevice, na corrosion nrụgide. Nke a na-emebi akụrụngwa dịka nfuli slurry na ndị na-akpasu iwe, na-ebelata nke ukwuu ndụ ha.
- N'oge imewe absorber, ikike Cl⁻ a na-anabata bụ ihe a ga-echebara echiche. Nkwenye chloride dị elu chọrọ ihe ndị ka mma, na-abawanye ọnụ ahịa. Dịka, ihe ndị dị ka 2205 igwe anaghị agba nchara nwere ike ijikwa mkpokọta Cl⁻ ruo 20,000 mg / L. Maka itinye uche dị elu, a na-atụ aro ihe ndị siri ike dị ka Hastelloy ma ọ bụ nickel alloys.
2. Mbelata iji Slurry na-abawanye yana oriri reagent/ ike
- Chlorides na-adịkarị dị ka calcium chloride na slurry. Ọnụnọ nke calcium ion dị elu, n'ihi mmetụta ion a na-ahụkarị, na-egbochi mgbasa nke limestone, na-ebelata alkalinity ma na-emetụta mmeghachi omume mwepụ SO₂.
- Chloride ion na-egbochikwa nnabata anụ ahụ na kemịkal nke SO₂, na-ebelata arụmọrụ desulfurization.
- Mfefe Cl⁻ nwere ike ime ka afụ guzosie ike n'ime ihe na-ekpo ọkụ, na-eduga n'ife mmiri, ịgụ ọkwa mmiri ụgha na cavitation mgbapụta. Nke a nwedịrị ike ime ka slurry na-abanye n'ọdụ ụgbọ mmiri flue gas.
- Ọnụnọ nke chloride dị elu nwekwara ike bute mmeghachi omume mgbagwoju anya siri ike na ọla dị ka Al, Fe, na Zn, na-ebelata mmeghachi omume nke CaCO₃ na n'ikpeazụ na-ebelata arụmọrụ slurry.
3. Mbelata ogo Gypsum
- Mmụba Cl⁻ dị elu na slurry na-egbochi mgbasa SO₂, na-eduga n'ọdịnaya CaCO₃ dị elu na gypsum na akụrụngwa mmiri na-adịghị mma.
- Iji mepụta gypsum dị elu, a na-achọkwu mmiri ịsa ahụ, na-emepụta usoro ọjọọ na ịba ụba chloride na mmiri mmiri, na-eme ka ọgwụgwọ ya sie ike.
II. Isi mmalite nke ion chloride na Absorber Slurry
1. FGD Reagents, etemeete Water, na Coal
- Chlorides na-abanye na sistemụ site na ntinye ndị a.
2. Iji Cooling Tower Blowdown dị ka Usoro Mmiri
- Mmiri na-agbawa agbawa na-enwekarị ihe dị ka 550 mg/L nke Cl⁻, na-enye aka na nchịkọta Cl⁻ slurry.
3. Arụmọrụ Electrostatic Precipitator na-adịghị mma
- Uzuzu uzuzu na-abawanye na-abanye n'ime ihe na-ebu ihe na-ebu chlorides, nke na-agbaze na slurry ma gbakọta.
4. Mkpofu mmiri na-adịghị mma
- Ọdịda ịwụpụ mmiri mkpofu desulfurization n'otu nhazi yana ihe achọrọ na-eduga na mkpokọta Cl⁻.
III. Usoro iji chịkwaa ion chloride na Absorber Slurry
Ụzọ kachasị dị irè iji chịkwaa oke Cl⁻ bụ ịbawanye mmịpụta nke mmiri mkpofu desulfurization ma na-ahụ na nrube isi n'ụkpụrụ mwepụ. Usoro ndị ọzọ akwadoro gụnyere:
1. Na-ebuli Filtrate Water Jiri
- Belata oge nzagharị filtrate ma jikwaa nbata nke mmiri jụrụ oyi ma ọ bụ mmiri ozuzo n'ime sistemu slurry iji kwado nguzozi nke mmiri.
2. Belata mmiri ịsacha gypsum
- Machie ọdịnaya gypsum Cl ka ọ bụrụ ebe ezi uche dị na ya. Mụbaa mwepụ nke Cl⁻ n'oge mmiri na-ekpochapụ site na iji gypsum slurry ọhụrụ dochie slurry mgbe ọkwa Cl⁻ gafere 10,000 mg/L. Jiri otu ihe nyochaa ọkwa slurry Cl⁻mita njupụta inlinema mezie ọ̀tụ̀tụ̀ mkpofu mmiri na-adịghị ọcha otú ahụ.
3. Mee ka nlekota chloride siri ike
- Na-anwale ọdịnaya chloride slurry mgbe niile wee mezie arụmọrụ dabere na ọkwa sọlfọ coal, ndakọrịta ihe yana ihe sistemụ chọrọ.
4. Control Slurry density na pH
- Jikwaa njupụta slurry n'etiti 1080-1150 kg/m³ na pH n'etiti 5.4-5.8. Wetuo ala pH kwa oge iji meziwanye mmeghachi omume n'ime ihe ntinye.
5. Gbaa mbọ hụ na ọ na-arụ ọrụ nke ọma nke ọkụ eletrik
- Gbochie ụmụ irighiri uzuzu na-ebu oke chloride ịbanye n'ime ihe na-ekpo ọkụ, nke ga-agbaze ma ọ bụghị na-agbakọta na slurry.
Mmechi
Ion chloride karịrị akarị na-egosi mwepu mmiri mkpofu ezughi oke, na-eduga n'ibelata nrụpụta desulfurization na enweghị aha n'usoro. Njikwa chloride dị irè nwere ike ịkwalite nkwụsi ike na arụmọrụ sistemụ. Maka azịza ahaziri ahazi ma ọ bụ ịnwaleLonnmeter's ngwaahịa na ọkachamara remote debugging support, kpọtụrụ anyị maka a free consultation na slurry njupụta nha ngwọta.
Oge nzipu: Jan-21-2025
