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 egwu 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
