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) kaʻina hana.

Me nā holomua ʻenehana a pau i ka hoʻomohala ʻana i nā kumu ikehu hou i ke kenekulia i hala, hoʻokahi mea i loli nui ʻole ʻo ko mākou hilinaʻi ʻana i nā wahie mōʻalihaku, ʻoi aku ka lanahu, e hoʻoulu i ka uila. ʻOi aku ma mua o ka hapalua o ka uila ma ʻAmelika Hui Pū ʻIa mai ka lanahu. ʻO kekahi o nā hopena o ka puhi ʻana i ka lanahu i nā mea kanu mana ʻo ia ka hoʻokuʻu ʻana o ke kinoea sulfur dioxide (SO 2).

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Pum TL FGD

Ma kahi o 140 mau mea kanu mana hou i ka paipu ma ʻAmelika wale nō, ke alakaʻi nei nā hopohopo e pili ana i ka hoʻokō ʻana i nā lula ea maʻemaʻe ma ʻaneʻi a puni ka honua i ke ala no nā mea kanu mana hou a i loaʻa - i lako me nā ʻōnaehana "scrubbing" kiʻekiʻe. Hoʻopau ʻia ʻo SO2 mai ke kinoea puhi e nā ʻano hana like ʻole i kapa ʻia ʻo ka flue gas desulfurization (FGD). Wahi a ka Energy Information Administration, e hāʻawi ana i nā helu ikehu no ke aupuni US, ua manaʻo ʻia nā pono e hoʻonui i kā lākou mau mea FGD i 141 gigawatts o ka hiki ke hoʻokō i nā hana mokuʻāina a i ʻole federal.

Hiki i nā ʻōnaehana FGD ke hoʻohana i nā kaʻina hana maloʻo a pulu paha. ʻO ke kaʻina hana FGD pulu maʻamau ka hoʻohana ʻana i kahi ʻoluʻolu holoi (maʻa mau i ka limestone slurry) e hoʻomoʻa i ka SO2 mai ke kahawai o waho. E hoʻoneʻe ke kaʻina FGD maʻemaʻe ma luna o 90% o ka SO2 i loko o ke kinoea a me nā mea ʻala. I loko o kahi hoʻololi kemika maʻalahi, ua hoʻololi ʻia ka limestone i loko o ka slurry i ka calcium sulfite i ka wā e hana ai ka limestone slurry me ke kinoea puhi i loko o ka absorber. I loko o nā ʻāpana FGD he nui, puhi ʻia ka ea i loko o kahi ʻāpana o ka absorber a hoʻoneʻe i ka calcium sulfite i ka calcium sulfate, a laila hiki ke kānana a hoʻoheheʻe ʻia e hana i kahi mea maloʻo, ʻoi aku ka paʻa o ka mea hiki ke hoʻolei ʻia i loko o nā waihona ʻāina a kūʻai ʻia paha he huahana no ka hana ʻana i ka sima, gypsum wallboard a i ʻole he mea hoʻohui fertilizer.

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Pump Slurry

Pum koho no FGD

No ka mea, pono e neʻe pono kēia slurry limestone ma o ke kaʻina hana ʻoihana paʻakikī, ke koho ʻana i nā pamu a me nā kiwi kūpono - me ka maka i ko lākou kumukūʻai holoʻokoʻa a me ka mālama ʻana - he mea koʻikoʻi.

Hoʻomaka ke kaʻina hana FGD i ka wā e hoʻemi ʻia ai ka nui o ka meaʻai limestone (pōhaku) ma ka ʻoki ʻana iā ia i loko o ka wili pōpō a laila hui pū ʻia me ka wai i loko o kahi pahu hoʻolako slurry. ʻO ka slurry (e pili ana i 90% wai) a laila kaomi i loko o ka pahu absorption. Ma muli o ka loli ʻana o ka limestone slurry, hiki i nā kūlana suction ke hiki ke alakaʻi i ka cavitation a me ka pau ʻole o ka pauma.

ʻO kahi hoʻonā pauma maʻamau no kēia noi ʻo ia ke kau ʻana i kahi slurry pump carbide e kū i kēia mau ʻano kūlana. Pono e hana ʻia nā pāpaʻi metala i hoʻopaʻa ʻia e kū i ka lawelawe slurry abrasive koʻikoʻi loa a ua hoʻolālā ʻia hoʻi e maʻalahi loa e mālama a palekana. ʻO ka mea koʻikoʻi i ka ʻenekinia o ka pāpaʻi he mau papa hana kaumaha a me nā kumu, nā ʻāpana pā mānoanoa ʻē aʻe a me nā ʻāpana aahu maʻalahi. He mea koʻikoʻi ka noʻonoʻo ʻana i ke kumukūʻai o ke ola holoʻokoʻa i ka wā e kuhikuhi ana i nā pamu no nā kūlana hana koʻikoʻi e like me ka lawelawe FGD. He mea maikaʻi nā paila chromium alloy kiʻekiʻe ma muli o ka pH corrosive o ka slurry.

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Pump Slurry

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 >slurry pumps ʻo ia ka hopena maikaʻi loa e hoʻomake ai. Eia hou, no ka hoʻokō ʻana i ka noʻonoʻo ʻana i ke kumukūʻai o ke ola, pono e hoʻolako ʻia nā paila me nā impellers nui-diameter no ka haʻahaʻa haʻahaʻa o ka hana ʻana a me ka lōʻihi o ke ola ʻana, a me nā mea hoʻololi ʻia i ke kahua no ka mālama wikiwiki ʻana. I loko o kahi hale hoʻoheheʻe ahi maʻamau, e hoʻohana ʻia ʻelua a ʻelima mau pamu i kēlā me kēia hale kiaʻi ehu.

Ma muli o ka ʻohi ʻia ʻana o ka slurry ma lalo o ka hale kiaʻi, koi ʻia nā pamu hou i hoʻopaʻa ʻia no ka lawe ʻana i ka slurry i nā pahu mālama, nā loko huelo, nā keʻena mālama ʻōpala a i ʻole nā ​​kaomi kānana. Ma muli o ke ʻano o ke kaʻina hana FGD, loaʻa nā kumu hoʻohālike ʻē aʻe no ka hoʻokuʻu ʻana i ka slurry, ka hoʻihoʻi ʻana i ka scrubber a me nā noi ʻaila.

If you want to know more information about the best FGD pump, welcome to >kāhea iā mā˚ou i kēia lā a i ʻole e noi i kahi ʻōlelo.