Coal Water Slurry
I. Njirimara na arụrụ arụ
Mmiri na-ekpo ọkụ bụ slurry nke coal, mmiri na obere ihe mgbakwunye kemịkal mee. Dị ka nzube ya si dị, coal-water slurry na-ekewa n'ime elu-concentration coal-water slurry mmanụ ụgbọala na coal-water slurry maka Texaco ọkụ gasification. Enwere ike ịgbanye slurry coal-water, atomize, chekwaa ma gbanye ọkụ ma kpọọ ya ọkụ n'ọnọdụ kwụsiri ike. Ihe dị ka tọn abụọ nke coal-water slurry nwere ike dochie 1 ton mmanụ mmanụ.
Mmiri mmiri na-ekpo ọkụ maka ọkụ na-arụ ọrụ na-arụ ọrụ dị elu nke ọkụ ọkụ, nchekwa ike na uru gburugburu ebe obibi, otu akụkụ dị mkpa nke nkà na ụzụ coal dị ọcha. Enwere ike ibufe slurry coal-water n'ebe dị anya site na ụgbọ njem pipeline na ntinye ego dị ala yana ụgwọ ọrụ dị ala. Enwere ike ịgba ya ọkụ ozugbo na-enweghị nkụnwụ mmiri mgbe ọ bịarutere na njedebe, na-emechikwa usoro nchekwa na njem njem.
Mmiri ga-eme ka ikpo ọkụ na-ekpo ọkụ na enweghị ike ịmepụta okpomọkụ na usoro nsure ọkụ. Ya mere, ịta nke coal kwesịrị iru ọkwa dị elu - 65 ~ 70% n'ozuzu ya. Mgbakwunye kemịkalụ dị ihe dịka 1%. Ọnwụ ọkụ nke mmiri na-akpata bụ ihe dị ka 4% nke uru calorific nke coal-water slurry. Mmiri bụ ihe a na-apụghị izere ezere na gasification. Site n'echiche a, enwere ike ibelata mkpokọta coal na 62% ~ 65%, nke nwere ike ime ka ikuku oxygen na-abawanye.
Iji kwado mmeghachi omume combustion na gasification, slurry coal-water slurry nwere ụfọdụ ihe achọrọ maka ịdị mma coal. The elu ịgba nke urughuru size nke coal-mmiri slurry maka mmanụ ụgbọala (na urughuru size na ngafe ọnụego nke bụghị ihe na-erughị 98%) bụ 300μm, na ọdịnaya nke na-erughị 74μm (200 ntupu) bụ ihe na-erughị 75%. Ịdị mma nke slurry coal-water slurry maka gasification dị ntakịrị karịa nke slurry coal-water slurry maka mmanụ. A na-ahapụ oke oke nke urughuru ka iru 1410μm (ntupu 14), na ọdịnaya nke ihe na-erughị 74μm (200 ntupu) bụ 32% ruo 60%. Iji mee ka coal-water slurry dị mfe ịgbapụta na atomize, coal-water slurry nwekwara ihe achọrọ maka mmiri.
N'ebe okpomọkụ dị n'ime ụlọ na ọnụ ọgụgụ shear nke 100s, a na-achọkarị viscosity pụtara ìhè ka ọ dị elu karịa 1000-1500mPas. Mmiri nke coal-water slurry nke a na-eji na-ebugharị pipeline dị anya na-achọ viscosity pụtara ìhè nke na-erughị 800mPa·s n'okpuru obere okpomọkụ (okpomọkụ kachasị dị ala nke afọ maka ọkpọkọ ndị e liri n'okpuru ala) na ọnụ ọgụgụ shear nke 10s-1. Tụkwasị na nke ahụ, a na-achọkwa na slurry coal-water slurry nwere obere viscosity mgbe ọ nọ na ọnọdụ na-asọ oyi, nke dị mma maka ojiji; mgbe ọ na-akwụsị na-asọpụta ma nọrọ na ọnọdụ kwụ ọtọ, ọ nwere ike igosi nnukwu viscosity maka nchekwa dị mfe.
Nkwụsi ike nke slurry coal-water slurry n'oge nchekwa na njem dị ezigbo mkpa, n'ihi na slurry coal-water slurry bụ ngwakọta nke usoro siri ike na mmiri mmiri, ọ dịkwa mfe ikewapụ ihe siri ike na mmiri mmiri, n'ihi ya, a chọrọ ka ọ ghara ịmepụta "oké mmiri ozuzo" n'oge nchekwa na njem. Ihe a na-akpọ "mmiri mmiri siri ike" na-ezo aka na mmiri ozuzo na-enweghị ike iweghachi ya na ọnọdụ mbụ ya site n'ịkpalite slurry coal-water. Ike nke coal-water slurry iji nọgide na-arụ ọrụ nke adịghị emepụta mmiri ozuzo siri ike ka a na-akpọ "nkwụsi ike" nke slurry coal-water slurry. Mmiri coal-mmiri na nkwụsi ike na-adịghị mma ga-emetụta mmepụta nke ukwuu ozugbo mmiri ozuzo na-ada n'oge nchekwa na njem.
II. Nyochaa teknụzụ Nkwadebe nke Coal-Water Slurry
Ọkpụkpọ coal-water slurry chọrọ itinye uche dị elu nke coal, nha dị mma, oke mmiri dị mma, yana nkwụsi ike dị mma iji zere oke mmiri ozuzo. Ọ ga-esi ike izute ihe niile dị n'elu n'otu oge, n'ihi na ụfọdụ n'ime ha na-amachibidoro ibe ha. Dịka ọmụmaatụ, ịba ụba nke ntinye uche ga-eme ka viscosity na-abawanye na mmiri mmiri na-emebi. Mmiri mmiri dị mma na obere viscosity ga-eme ka nkwụsi ike dịkwuo njọ. Ya mere, ọ dị mkpa iji nyochaa ntinye uche na ozugbo. NkeLonnmetermita njupụta akanwere izi ezi ruru 0.003 g/ml, nke nwere ike nweta nha njupụta ziri ezi ma jikwaa njupụta nke slurry nke ọma.
1. Họrọ nke ọma coal nke raw maka ịkụ mkpụrụ
Na mgbakwunye na imezu ihe ndị a chọrọ n'aka ndị na-arụ ọrụ n'okpuru mmiri, ịdị mma nke coal maka ịkụgharị ga-aṅa ntị na ihe ndị na-emepụta ihe - ihe isi ike nke pulping. Ụfọdụ icheku ọkụ dị mfe iji mee ka mmiri na-etinye uche dị elu nke coal-water slurry n'okpuru ọnọdụ nkịtị. Maka icheku ọkụ ndị ọzọ, ọ na-esiri ike ma ọ bụ na-achọ usoro mgbagwoju anya dị mgbagwoju anya na ọnụ ahịa dị elu iji mee ka mmiri dị elu nke coal-water slurry. Ngwongwo nke ihe eji eme ihe maka pulping nwere mmetụta dị ukwuu na ntinye ego, ọnụ ahịa mmepụta na àgwà nke coal-water slurry nke osisi pulping. Ya mere, a ga-amarịrị iwu nke ihe ọkụkụ nke coal, a ga-ahọrọkwa coal raw maka pulping dịka mkpa dị n'ezie na ụkpụrụ nke ikike teknụzụ na ezi uche akụ na ụba.
2. Ọkwa
Coal-mmiri slurry ọ bụghị nanị na-achọ ka coal urughuru size iru kpọmkwem fineness, ma na-achọ ezi urughuru size nkesa, nke mere na coal ahụ nke dị iche iche nha nwere ike jupụta onye ọ bụla ọzọ, ibelata oghere n'etiti coal ahụ, na nweta a elu "stacking arụmọrụ". Oghere ole na ole nwere ike ibelata oke mmiri a na-eji eme ihe, ọ dịkwa mfe ime ka mmiri na-ekosi ọkụ na-etinye uche dị elu. A na-akpọ teknụzụ a mgbe ụfọdụ “grading”.
3. Pulping usoro na akụrụngwa
N'okpuru nyere raw coal urughuru size e ji mara na grindability ọnọdụ, otú e si eme ka urughuru size nkesa nke ikpeazụ ngwaahịa nke coal-mmiri slurry nweta a elu "stacking arụmọrụ" na-achọ ezi uche nhọrọ nke egweri ngwá na pulping usoro.
4. Ịhọrọ Arụmọrụ-Mgbakwunye mgbakwunye
Iji mee ka slurry coal-water slurry nweta nnukwu mkpokọta, viscosity dị ala, na rheology dị mma na nkwụsi ike, a ghaghị iji obere ihe ndị na-emepụta kemịkal, nke a na-akpọ "ihe mgbakwunye". The ụmụ irighiri ihe mgbakwunye na-eme na interface n'etiti coal irighiri na mmiri, nke nwere ike ibelata viscosity, melite mgbasa nke coal ahụ na mmiri, na melite nkwụsi ike nke coal-water slurry. Ọnụ ego mgbakwunye na-abụkarị 0.5% ruo 1% nke ego coal. Enwere ọtụtụ ihe mgbakwunye dị iche iche, usoro a anaghị edozi ya, a ga-ekpebirịrị ya site na nyocha nnwale.
Oge nzipu: Feb-13-2025
