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  • 產(chǎn)品名稱：LGA-4000 In-Situ Gas Analysis System過程激光氣體分析系統(tǒng)

  • 產(chǎn)品型號(hào)：LGA-4000 In-Situ Gas Analysis System過程激光氣體分析系統(tǒng)
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簡單介紹：
LGA-4000 In-Situ Gas Analysis System過程激光氣體分析系統(tǒng) 利用可調(diào)諧二極管激光吸收光譜技術(shù)（TDLAS）。
詳情介紹：
LGA-4000 In-Situ Gas Analysis System過程激光氣體分析系統(tǒng)
利用可調(diào)諧二極管激光吸收光譜技術(shù)（TDLAS）。
LGA - 4000是采用由激光發(fā)射器，接收器和電子接口，以及可選的中央處理單元。發(fā)射器和接收器是直接安裝在對(duì)面一工藝管道/管道另一工作。發(fā)射器發(fā)射一個(gè)橫跨到接收單位管徑選定波長的激光束。
由此產(chǎn)生的電子信號(hào)，然后傳送到電子接口或中央處理單元。
TDLAS優(yōu)勢(shì)和好處。
提供即時(shí)響應(yīng)過程的變化。
消除了樣品處理的成本和維護(hù)問題。
可應(yīng)用于氧氣，一氧化碳，二氧化碳，甲烷，氨，氯化氫，并H2Ov分析。從背景.
消除交叉干擾氣體和粉塵，極大地提高測量精度~
TDLAS工作原理：。.
氣體分子在吸收特定波長的電磁波譜的能量。這些波長比吸收線不同，但基本上沒有吸收。
通過發(fā)送包含通過一個(gè)樣氣的興趣化合物的混合物的光束，光束和調(diào)整的波長對(duì)目標(biāo)氣體的吸收線之一，然后測量的那束的吸收，我們可以監(jiān)測濃度對(duì)在光束的路徑長度利**體。
激光器的快速調(diào)諧能力，用于快速和反復(fù)掃描跨選定氣體吸收線的波長。對(duì)于氧氣，吸收線為760納米。
在掃描過程中激光功率的發(fā)射是通過樣品氣體通過的部分是衡量一個(gè)探測器。當(dāng)波長調(diào)諧到被關(guān)閉的吸收線，發(fā)射功率比上線時(shí)較高。
通過測量離線的相對(duì)振幅進(jìn)行網(wǎng)上傳輸，采用LGA - 4000能夠提供一個(gè)準(zhǔn)確的利益和高度敏感的氣體分析。
應(yīng)用領(lǐng)域：。.
鋼鐵工業(yè)（高爐，焦?fàn)t，轉(zhuǎn)爐煤氣等）.
石化（FCC催化劑再生，SRU的尾氣處理裝置等）**％ ％**電廠（煤及重燃油鍋爐，袋式，省煤器等）.
廢棄物的能源（合成氣）生產(chǎn)。垃圾焚燒。
水泥和玻璃工業(yè);氨/尿素裝置。
相關(guān)應(yīng)用公告。
- 應(yīng)用在鋼鐵行業(yè)的LGA-3500/LGA-4000。
- 應(yīng)用在石化行業(yè)LGA-3500/LGA-4000。
- 應(yīng)用采用LGA - 4000 - 氨滑監(jiān)測。
水分版本。
- 微量氯堿，甲苯二異氰酸酯（TDI）的，以及聚氨酯工業(yè)濕度分析。
- 電子微量二氯乙烷（EDC）的，四氯化碳水分分析，小型斷路器在PVC和MDI行業(yè)。
Industrial Products

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Model LGA-4000 In-Situ Gas Analysis System

Using Tunable Diode Laser Absorption Spectroscopy (TDLAS)

The LGA-4000 is comprised of a laser transmitter, receiver with electronic interface, and optional central processing unit. The transmitter and receiver are installed directly opposite one another on the process pipe / duct work. The transmitter launches a laser beam with a selected wavelength across the diameter of the pipe to the receiver unit.

The resulting electrical signal is then sent to the electronic interface or central processing unit.

TDLAS Advantages & Benefits
  • Provides immediate response to process changes
  • Eliminates sample handling cost and maintenance issues
  • Can be applied for O2, CO, CO2, CH4, NH3, HCL, and H2Ov Analysis
  • Eliminates cross interferences from background gases and dust, significantly improving measurement accuracy

TDLAS Theory of Operation:
Gas molecules absorb energy at specific wavelengths in the electromagnetic spectrum. At wavelengths slightly different than these absorption lines, there is essentially no absorption.

By transmitting a beam of light through a sample gas mixture containing the compound of interest, and tuning the beam's wavelength to one of the target gas's absorption lines and then measuring the absorption of that beam, we can monitor the concentration of the gas of interest over the beam's path length.

The laser's fast tuning capability is used to quickly and repeatedly scan the wavelength across the selected gas absorption line. For O2, the absorption line is 760 nanometers.

During the scanning process the portion of emitted laser power that is passed through the sample gas is measured by a photodetector. When the wavelength is tuned to be off of the absorption line, the transmitted power is higher than when it is on the line.

By measuring the relative amplitudes of the off-line to on-line transmission, the LGA-4000 is able to provide an accurate and highly sensitive analysis of the gas of interest.

Application Areas:
  • Steel Industry (Blast Furnace, Coke Ovens, Converter Coal Gas, etc)
  • Petrochemical (FCC Catalyst Regeneration, SRU Tail Gas Treating Unit, etc)
  • Power Plants (Coal & Heavy-Oil Fired Boilers, Baghouse, Economizer, etc)
  • Waste-to-Energy (Syngas) Production; Waste Incineration
  • Cement & Glass Industries; Ammonia / Urea Plants

Relevant Application Bulletins

- Applying the LGA-3500/LGA-4000 in the Steel industry
- Applying the LGA-3500/LGA-4000 in the Petrochemical industry
- Applying the LGA-4000 - Ammonia Slip Monitoring

Moisture version
- Trace moisture analysis in chlorine alkali, toluene diisocyanate (TDI), and polyurethane industries
- Trace moisture analysis in electron dichloride (EDC), carbon tetrachloride, and MCB in PVC and MDI industries
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