He Hihia Noi o kahi Hale Hana Mana Ponoʻī ma kahi ʻOihana Pepa ma Fujian

ʻO kekahi ʻoihana kuleana palena ʻoihana pepa ma ka Panalāʻau ʻo Fujian kekahi o nā ʻoihana hana pepa nui loa ma ka panalāʻau a he ʻoihana panalāʻau koʻikoʻi e hoʻohui ana i ka hana pepa nui me ka hui pū ʻana o ka wela a me ka hana mana. ʻO ka huina kūkulu o ka papahana e komo pū ana me ʻehā mau seti o "630 t/h high-temperature and high-pressure multi-fuel circulating fluidized bed boilers + 80 MW back-pressure steam turbines + 80 MW generators," me hoʻokahi paila e lawelawe ana ma ke ʻano he ʻāpana kākoʻo. Hoʻokō ʻia ka papahana i ʻelua mau pae: ʻo ka pae mua he ʻekolu mau seti o ka hoʻonohonoho lako i ʻōlelo ʻia ma luna, ʻoiai ʻo ka pae ʻelua e hoʻohui i hoʻokahi set hou aʻe.

He kuleana koʻikoʻi ka loiloi ʻana i ka maikaʻi o ka wai i ka nānā ʻana i ka paila, no ka mea, pili pololei ka maikaʻi o ka wai i ka hana paila. Hiki i ka maikaʻi ʻole o ka wai ke alakaʻi i nā hana pono ʻole, nā pōʻino o nā lako, a me nā pōʻino palekana no nā limahana. ʻO ka hoʻokō ʻana i nā mea hana nānā ʻana i ka maikaʻi o ka wai ma ka pūnaewele e hōʻemi nui i ka pilikia o nā hanana palekana e pili ana i ka paila, no laila e hōʻoiaʻiʻo ana i ka hana palekana a paʻa o ka ʻōnaehana paila.

Ua hoʻohana ka ʻoihana i nā mea hana loiloi maikaʻi wai a me nā mea ʻike kūlike i hana ʻia e BʻOQUMa ka nānā ʻana i nā palena e like me ka pH, ka conductivity, ka oxygen i hoʻoheheʻe ʻia, ka silicate, ka phosphate, a me nā sodium ions, hōʻoiaʻiʻo ia i ka hana palekana a paʻa o ka paila, hoʻolōʻihi i ke ola lawelawe o nā lako, a hōʻoiaʻiʻo i ka maikaʻi o ka mahu.

Nā Huahana i Hoʻohana ʻia:
Mea loiloi pH pūnaewele pHG-2081Pro
Mea Loiloi Hoʻokele Pūnaewele DDG-2080Pro
ʻĪLIO-2Mea kālailai oxygen hoʻoheheʻe pūnaewele 082Pro
Mea kālailai silicate pūnaewele GSGG-5089Pro
Mea kālailai Phosphate Pūnaewele LSGG-5090Pro
Mea kālailai ion sodium pūnaewele DWG-5088Pro

ka waiwai pH: Pono e mālama ʻia ka pH o ka wai paila i loko o kahi pae (maʻamau 9-11). Inā haʻahaʻa loa ia (ʻakika), e hōʻino ia i nā ʻāpana metala o ka paila (e like me nā paipu kila a me nā pahu mahu). Inā kiʻekiʻe loa ia (alkalica ikaika), hiki ke hoʻokuʻu i ka ʻili pale ma luna o ka ʻili metala, e alakaʻi ana i ka hōʻino alkaline. Hiki i ka pH kūpono ke kāohi i ka hopena hōʻino o ke kalapona dioxide manuahi i loko o ka wai a hōʻemi i ka pilikia o ka scaling paipu.

ʻO ke alakaʻi: Hōʻike ke alakaʻi i ka nui o nā ion i hoʻoheheʻe ʻia i loko o ka wai. ʻO ke kiʻekiʻe o ka waiwai, ʻoi aku ka nui o nā haumia (e like me nā paʻakai) i loko o ka wai. Hiki i ka alakaʻi kiʻekiʻe loa ke alakaʻi i ka scaling boiler, ka wikiwiki o ka palaho, a hiki ke hoʻopilikia i ka maikaʻi o ka mahu (e like me ka lawe ʻana i nā paʻakai), hoʻemi i ka pono wela, a hiki ke hana i nā hanana palekana e like me ka pahū ʻana o nā paipu.

ʻOkikene i hoʻoheheʻe ʻia: ʻO ka ʻokikene i hoʻoheheʻe ʻia i loko o ka wai ke kumu nui o ka pala o ka ʻokikene o nā metala paila, ʻoi aku hoʻi i nā economizers a me nā paia i hoʻomaʻalili ʻia e ka wai. Hiki iā ia ke alakaʻi i ka lua a me ka lahilahi o ka ʻili metala, a i nā hihia koʻikoʻi, ka liki ʻana o nā lako. Pono e kāohi i ka ʻokikene i hoʻoheheʻe ʻia ma kahi pae haʻahaʻa loa (maʻamau ≤ 0.05 mg/L) ma o ka mālama ʻana i ka deaeration (e like me ka deaeration thermal a me ka deaeration kemika).

Silicate: He maʻalahi ka silicate e hoʻoheheʻe me ka mahu ma lalo o ke ana wela a me ke kaomi kiʻekiʻe, e waiho ana ma nā ʻaoʻao turbine e hana i ka silicate scale, kahi e hōʻemi ai i ka pono o ka turbine a hoʻopilikia pū i kāna hana palekana. Hiki i ka nānā ʻana i ka silicate ke kāohi i ka ʻike silicate i loko o ka wai paila, hōʻoia i ka maikaʻi o ka mahu, a pale i ka scaling turbine.

ʻAʻa Phosphate: ʻO ka hoʻohui ʻana i nā paʻakai phosphate (e like me ka trisodium phosphate) i ka wai paila hiki ke hana me nā ion calcium a me magnesium e hana i nā phosphate precipitates palupalu, e pale ana i ka hoʻokumu ʻia ʻana o ka unahi paʻakikī (ʻo ia hoʻi, "phosphate scale prevention treatment"). ʻO ka nānā ʻana i ka nui o ke aʻa phosphate e hōʻoiaʻiʻo ana e noho mau ana ia i loko o kahi pae kūpono (maʻamau 5-15 mg/L). Hiki i nā pae kiʻekiʻe loa ke alakaʻi i ka lawe ʻia ʻana o ke aʻa phosphate e ka mahu, ʻoiai ʻo nā pae haʻahaʻa loa ʻaʻole hiki ke pale pono i ka hoʻokumu ʻia ʻana o ka unahi.

ʻIona sodium: ʻO nā iona sodium he mau iona i hoʻokaʻawale ʻia e ka paʻakai i loko o ka wai, a hiki i ko lākou ʻike ke hōʻike pololei ʻole i ke kiʻekiʻe o ka nui o ka wai paila a me ke kūlana o ka paʻakai i lawe ʻia e ka mahu. Inā kiʻekiʻe loa ka nui o nā iona sodium, hōʻike ia ua nui ka nui o ka wai paila, kahi e maʻalahi ai ke kumu o ka scaling a me ka corrosion; ʻo ka nui o nā iona sodium i loko o ka mahu e alakaʻi pū i ka hōʻiliʻili paʻakai i loko o ka turbine mahu, e hoʻopilikia ana i ka hana o nā lako.