Nitrogen oxide da ke cikin hayaki na kwal mai ƙonewa yana da mahimmanci ga gurɓataccen iska, kuma kula da yawan hayaki na NOx a cikin tsarin ƙonewa na kwal yana da mahimmanci ga dokokin kare muhalli na ƙasashe. Zaɓin Catalytic Reduction (SCR) da Zaɓin Non-Catalytic Reduction (SNCR) fasahohin ne halin yanzu hayaki gas denitration mainstream fasahohi. Ta hanyar allurar ammonia ko urea a cikin gas mai hayaki, manyan abubuwan da ke ciki NH3 suna aiki da sinadarai tare da nitrogen oxide don samar da N2 da H2O marasa lalacewa ga muhalli. Don ingantaccen ingancin amfani da ammonia da rage fitar da NH3 da amfani, dole ne a saka idanu a ainihin lokacin da aka rage na NH3 a cikin hayaki. A yau da kullun, an shigar da na'urar sa ido ta ammonia gudu a ƙarshen amsawar sakewa bayan allurar ammonia (a ƙarƙashin alamar).

Typical kwal wutar lantarki tashar SCR denitration tsari Chart

Matsalolin hanyoyin nazarin ammonia na gargajiya
Taimakon shigarwa kai tsaye, daidaito na buɗewar rami yana da mahimmanci, a ƙarƙashin yanayin shigarwa mai wuya, kamar rawar jiki, fadada da raguwa, da sauransu, daidaito na haske na kayan aiki yana da wuya ya cimma buƙatun amfani, yana shafar kwanciyar hankali da daidaito na tsarin kai tsaye.
Tsarin bincike na kan layi ba zai iya shiga gas don bincike da daidaitawa ba
NH3kusa da infrared binciken samuwa sha spectrum ne m, sha peak ne kananan, m ga sauran gas bangarori tsangwama
NH3 kusa da infrared bincike kayan aiki auna ƙasa iyaka 1ppm, low ƙuduri

Bayanan fasaha na Tunable Semiconductor Laser Absorption Spectrum (TDLAS)

A halin yanzu, ingantaccen, ingantaccen hanyar gwajin gwajin ammonia mai zafi shine hanyar gwajin TDLAS. TDLAS ya fi son masu amfani saboda ƙananan sassan da ke lalacewa, ba tare da buƙatar rage samfurin gas ba. Ka'idarsa ta asali ita ce daidaita takamaiman tsawon raƙuman laser na semiconductor, don haka zai iya tsabtace layin sha gas da aka auna, hasken watsawa bayan sha gas ya karɓi na'urar ganowa ta hanyar photoelectric, ta hanyar kulle-phase amplifier module don cire harmonic ɓangare na watsawa, kuma ya juya bayanan matattarar gas da aka auna.

Shanghai QCL-TDLAS fasaha amfanin
Shanghai Cluster ya yi amfani da fasahar QCL-TDLAS, layin spectrum na manufa shine mafi ƙarfin ƙwayoyin ammonia a cikin matsakaicin yanayin infrared. Binciken kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwayoyin kwa Kasuwanci kamfanin juyin juya hali ta amfani da kasa da kasa manyan semiconductor QCL a matsayin tushen laser, hadewa da kwanciyar hankali da kuma amintacce optical hanyar zane da kuma musamman siginar sarrafawa fasahar, sa TDLAS gani hasken hankali fasahar cimma da ba a taɓa gani ba daidaito da kuma kwanciyar hankali, magance kusa da infrared ammonia mita rashin kwanciyar hankali, low daidaito halin yanzu, zai iya cikakken biyan bukatun kasuwa.

Kwatancen ƙarfin kusan infrared (a cikin blue frame) na ammonia kwayoyin tare da tsakiyar infrared (a cikin ja frame) sha spectrum line

Amfaninsamfurin

magancebabban sashe na tsarin nazarin laser na in-situ, ƙarancin ƙarancin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin; Hanyar rawar jiki, canjin zafin jiki na muhalli, wanda ke haifar da hanyar damuwa canji da sauran dalilai da ke haifar da rashin daidaitaccen haske; High ƙura, high ruwa a kan laser ganowa tasiri laser watsa; Tura gas ƙura da lalata gas absorbs a kan ruwan tabarau samaniya, haifar da ruwan tabarau mayar da hankali, staining tasiri laser ganowa; Ba za a iya yin matsalolin aikace-aikace kamar online calibration ba.
Hanyar ma'auni ta laser tana amfani da hanyar samfurin fitarwa, ta cire hayaki daga hayaki kuma bayan cire ƙura, tsabtace shi a cikin dakin nazarin gas, ta amfani da fasahar TDLAS don gwaji. Tsarin samfurin yana tare da zafi duk lokacin, bayanan matattarar gas da za a auna suna da gaskiya da abin dogaro. Na'urar za a iya daidaitawa da kuma daidaitawa tare da misali gas ganowa. Ingantaccen kauce wa tasirin rawar jiki na hayaki, haɓaka zafi da sauran dalilai a kan gano laser. Ya dace da sa ido kan tushen gurɓataccen hayaki a cikin mummunan muhalli da rikitarwa.
Tsarin tsarin yana da sauƙin kulawa, daidaitawa, tsaftacewa, da haɓaka aiki

ShanghaiIntegrated QCL-TDLAS kwatanta da generic NH3 gwajin fasahar

fasahasigogi

Ka'idar ma'auni Ƙarin ƙarni na biyu na fasahar ƙididdigar ƙididdigar ƙididdigar ƙididdigar ƙididdigar ƙididdigar ƙididdigar ƙididdigar ƙididdigar ƙididdigar ƙididdigar ƙididdigar ƙididdigar ƙididdigar ƙididdigar

Technical nuna alama

Ma'auni kewayon 0 ~ 10ppm, 0 ~ 100ppm (More ma'auni zaɓi)
Amsa lokaci ≤10s
Kuskuren layi ≤KusKuskuren ±1% FS
Maimaitawa ≤1% FS
Ma'aunin yawo ≤±1% FS / rabin shekara
Ganowa ƙasa iyaka 0.01ppm
Calibration / Maintenance lokaci ≤2 sau / shekara
Pre-dumama lokaci ≤30min
Data m kudi ≤1 sau / rabin shekara
Karfin motsa jiki ≤7mm / s (zai iya jure motsa jiki na gaba ɗaya)
Ginin-data ajiya damar 8GB, ci gaba da ajiya 2 years data a al'ada aiki yanayin

Yanayin aiki
Wutar lantarki 200 ~ 240 VAC 50Hz
Anti-blowing Gas tsabtace kayan aiki da matsa iska
yanayin zafin jiki -10 ℃ ~ 50 ℃ (ba condensation)
Gas zafin jiki 100 ~ 600 ℃
ikon amfani <1.5KW

Pre-sarrafawa

samfurin siffar girma 1700 × 600 × 600mm (tsayi × fadi × zurfi)
Hanyar sarrafawa Kai tsaye fitarwa (zafi da danshi hanyar)
Sampling kwararar Babu musamman bukatun
Samfurin zafin jiki ≥ 180 ℃ (babu sanyi maki duk lokacin)
abun ciki Babu condensation kawar da ruwa
tacewa ƙura tacewa daidaito < 0.5μm
aiki dubawa mutum-injin hulɗa (HMI)
Kariya Matsayi IP54

siginar dubawa

Analog yawan fitarwa 2 hanyoyin 4-20mA fitarwa (keɓe iyakar kaya 750Ω)
Digital fitarwa Standard RS485 Modbus, zaɓi Ethernet
Relay fitarwa 3 hanyar fitarwa

Shigarwa

Shigarwa Hanyar Shigarwa
Samfurin bincike docking flange DN65 PN16 (GB HG20592-97)

Masana'antu aikace-aikace

Heat wutar lantarki tashar denitration tsari sashi

Samanti juyawa tandu denitration tsari
sharar gida konewa Plant