Coal Water Slurry
I. Zvinhu Zvenyama Nemabasa
Coal-water slurry is slurry yakagadzirwa nemarasha, mvura uye zvishoma zvemakemikari additives. Zvinoenderana nechinangwa, marasha-mvura slurry yakakamurwa kuita yakakwira-yakadzika marasha-mvura slurry mafuta uye marasha-mvura slurry yeTexaco furnace gasification. Coal-water slurry inogona kupomba, atomize, kuchengetwa uye kupiswa uye kupiswa munzvimbo yakagadzikana. Inenge matani maviri emarasha-mvura slurry anogona kutsiva 1 toni yemafuta emafuta.
Coal-water slurry yekupisa kunze kwepamusoro-kupisa kushanda zvakanaka, kuchengetedza simba uye zvikomborero zvezvakatipoteredza, chimwe chikamu chinokosha che teknolojia yemarasha yakachena. Coal-water slurry inogona kutakurwa madaro marefu nekutakura pombi nekudyara kwakaderera uye mutengo wakaderera wekushandisa. Inogona kupiswa yakananga pasina kupera mvura mumuviri mushure mekusvika pachiteshi, uye nzira yekuchengetedza uye yekufambisa yakavharwa zvizere.
Mvura inokonzeresa kurasikirwa nekupisa uye haina kukwanisa kuburitsa kupisa mukupisa. Naizvozvo, kuwanda kwemarasha kunofanirwa kusvika padanho repamusoro -- 65 ~ 70% zvakazara. Kemikari yekuwedzera inenge 1%. Kurasikirwa kwekupisa kunokonzerwa nemvura kunokwana 4% yekorific kukosha kwemarasha-mvura slurry. Mvura chinhu chisingadzivisiki mbishi mune gasification. Kubva pakuona uku, kusungirirwa kwemarasha kunogona kudzikiswa kusvika pa62% ~ 65%, izvo zvinogona kukonzera kuwedzera kutsva kweokisijeni.
Kuti ifambise kupisa uye kuita gasification, marasha-mvura slurry ine zvimwe zvinodiwa pakunatsa marasha. Muganho wepamusoro wechikamu chekukura kwemarasha-mvura slurry yehuni (iyo saizi yechidimbu ine mwero wekupasa isiri pasi pe98%) ndeye 300μm, uye zvirimo zvisingasviki 74μm (200 mesh) hazvisi pasi pe75%. Iko kunaka kwemarasha-mvura slurry yegasification yakakora zvishoma pane iyo yemarasha-mvura slurry yehuni. Muganho wepamusoro weiyo particle saizi inobvumirwa kusvika 1410μm (14 mesh), uye zvirimo zvisingasviki 74μm (200 mesh) 32% kusvika 60%. Kuti uite kuti marasha-mvura slurry ive nyore kupomba uye atomize, marasha-mvura slurry inewo zvinodikanwa zvekuyerera.
Patembiricha yemumba uye mwero wekugera we100s, iyo inooneka viscosity inowanzodiwa kuti isakwira kupfuura 1000-1500mPas. Rurasha rwemvura yemarasha runoshandiswa mukufambisa kwepombi kureba kunoda kuoneka kunoratidzika kusingapfuuri 800mPa·s pasi petembiricha yakaderera (tembiricha yakaderera pagore yepombi dzakavigwa pasi pevhu) uye mwero wekugera we10s-1. Mukuwedzera, inodiwawo kuti marasha-mvura slurry ine viscosity yakaderera kana iri mumhepo inoyerera, iyo iri nyore kushandiswa; painomira kuyerera uye iine static state, inogona kuratidza yakakwira viscosity kuitira nyore kuchengetedza.
Kugadzikana kwemarasha-mvura slurry panguva yekuchengetedza uye kutakura kwakakosha zvikuru, nokuti marasha-mvura slurry musanganiswa wezvikamu zvakasimba uye zvemvura, uye zviri nyore kuparadzanisa zvakasimba uye mvura, saka zvinodikanwa kuti hapana "kunaya kwakaoma" kunogadzirwa panguva yekuchengetedza uye kutakura. Iyo inonzi "hard precipitation" inoreva kunaya kwemvura kusingagone kudzoserwa pachimiro chayo chepakutanga nekubvongodza mvura yemarasha. Kugona kwemarasha-mvura slurry kuchengetedza kushanda kwekusagadzira mvura yakaoma inonzi "kugadzikana" kwemarasha-mvura slurry. Marasha-mvura inotsvedza nekusagadzikana kunokanganisa zvakanyanya kugadzirwa kana kunaya kwemvura kuchiitika panguva yekuchengetedza nekufambisa.
II. Mhedziso yeCoal-Water Slurry Preparation Technology
Marasha-mvura inotsvedza inoda kuwanda kwemarasha, saizi yakanaka, kuyerera kwakanaka, uye kugadzikana kwakanaka kudzivirira kunaya kwakaoma. Zvichava zvakaoma kusangana nezvose zviri pamusoro apa panguva imwe chete, nokuti zvimwe zvacho zvinorambidzwa. Semuenzaniso, kuwedzera iyo yekuisa kuchaita kuti viscosity iwedzere uye fluidity iwedzere. Yakanaka fluidity uye yakaderera viscosity ichaita kuti kugadzikana kuwedzere. Naizvozvo, zvinodikanwa kutarisa kusungwa munguva chaiyo. TheLonnmeterhandheld density mitaine huchokwadi hunosvika 0.003 g/ml, iyo inogona kuwana chaiyo density kuyerwa uye kunyatso kudzora density ye slurry.
1. Nemazvo Sarudza Marasha Mbishi eKukwenya
Pamusoro pekusangana nezvinodiwa zvevashandisi vepasi, kunaka kwemarasha ekufambisa kunofanirwawo kutarisisa kune ayo pulping zvimiro - kuoma kwekupuruzira. Mamwe marasha ari nyore kuita yakakwira-concentration marasha-mvura slurry pasi pemamiriro akajairika. Kune mamwe marasha, zvakaoma kana kuti zvinoda kuoma kwakaoma pulping process uye mutengo wepamusoro wekuita yakakwirira-concentration yemarasha-mvura slurry. Iyo pulping zvimiro zvezvakagadzirwa zve pulping zvine simba guru pakudyara, mutengo wekugadzira uye mhando yemarasha-mvura slurry ye pulping chirimwa. Nokudaro, mutemo wemarasha pulping properties unofanirwa kuve wakanyatsogadziriswa, uye marasha akasvibirira ekuputika anofanira kusarudzwa maererano nezvinodiwa chaizvo uye nheyo dzehutano hunoita uye hupfumi hwehupfumi.
2. Grading
Marasha-mvura inotsvedza haingodi saizi yemarasha kuti isvike pakunaka kwakatarwa, asi inodawo kugovaniswa kwakanaka kwechikamu, kuitira kuti zvimedu zvemarasha zvehukuru hwakasiyana zvizadze mumwe nemumwe, kuderedza mikaha pakati pezvimedu zvemarasha, uye kuwana yakakwira "stacking kunyatsoshanda". Mashoma mashoma anogona kuderedza kuwanda kwemvura inoshandiswa, uye zviri nyore kugadzira yakakwira-concentration yemarasha-mvura slurry. Iyi tekinoroji dzimwe nguva inonzi "grading".
3. Pulping process uye midziyo
Pasi peiyo yakapihwa mbishi yemarasha particle size maitiro uye grindability mamiriro, kuita sei particle size kugovera kwekupedzisira chigadzirwa chemarasha-mvura slurry kuwana yakakwirira "stacking kunyatsoshanda" kunoda zvine musoro kusarudzwa kwekukuya michina uye pulping process.
4. Kusarudza Performance-Matching Additives
Kuti uite kuti marasha-mvura slurry iwane yakakwira kutariswa, yakaderera viscosity, uye yakanaka rheology uye kugadzikana, shoma shoma yemakemikari ejenti, inonzi "additives", inofanirwa kushandiswa. Mamorekuru echiito chekuwedzera pane chinongedzo pakati pemarasha particles nemvura, izvo zvinogona kuderedza viscosity, kuvandudza kupararira kwezvikamu zvemarasha mumvura, nekuvandudza kugadzikana kwemarasha-mvura slurry. Huwandu hwekuwedzera hunowanzo 0.5% kusvika 1% yemari yemarasha. Kune akawanda marudzi ezviwedzere, uye fomula haina kugadzikwa uye inofanirwa kutemwa kuburikidza nekuyedza tsvakiridzo.
Nguva yekutumira: Feb-13-2025
