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  • 产品名称：LGA-4000 In-Situ Gas Analysis System过程激光气体分析系统

  • 产品型号：LGA-4000 In-Situ Gas Analysis System过程激光气体分析系统
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简单介绍：
LGA-4000 In-Situ Gas Analysis System过程激光气体分析系统 利用可调谐二极管激光吸收光谱技术（TDLAS）。
详情介绍：
LGA-4000 In-Situ Gas Analysis System过程激光气体分析系统
利用可调谐二极管激光吸收光谱技术（TDLAS）。
LGA - 4000是采用由激光发射器，接收器和电子接口，以及可选的中央处理单元。发射器和接收器是直接安装在对面一工艺管道/管道另一工作。发射器发射一个横跨到接收单位管径选定波长的激光束。
由此产生的电子信号，然后传送到电子接口或中央处理单元。
TDLAS优势和好处。
提供即时响应过程的变化。
消除了样品处理的成本和维护问题。
可应用于氧气，一氧化碳，二氧化碳，甲烷，氨，氯化氢，并H2Ov分析。从背景.
消除交叉干扰气体和粉尘，极大地提高测量精度~
TDLAS工作原理：。.
气体分子在吸收特定波长的电磁波谱的能量。这些波长比吸收线不同，但基本上没有吸收。
通过发送包含通过一个样气的兴趣化合物的混合物的光束，光束和调整的波长对目标气体的吸收线之一，然后测量的那束的吸收，我们可以监测浓度对在光束的路径长度利**体。
激光器的快速调谐能力，用于快速和反复扫描跨选定气体吸收线的波长。对于氧气，吸收线为760纳米。
在扫描过程中激光功率的发射是通过样品气体通过的部分是衡量一个探测器。当波长调谐到被关闭的吸收线，发射功率比上线时较高。
通过测量离线的相对振幅进行网上传输，采用LGA - 4000能够提供一个准确的利益和高度敏感的气体分析。
应用领域：。.
钢铁工业（高炉，焦炉，转炉煤气等）.
石化（FCC催化剂再生，SRU的尾气处理装置等）**％ ％**电厂（煤及重燃油锅炉，袋式，省煤器等）.
废弃物的能源（合成气）生产。垃圾焚烧。
水泥和玻璃工业;氨/尿素装置。
相关应用公告。
- 应用在钢铁行业的LGA-3500/LGA-4000。
- 应用在石化行业LGA-3500/LGA-4000。
- 应用采用LGA - 4000 - 氨滑监测。
水分版本。
- 微量氯碱，甲苯二异氰酸酯（TDI）的，以及聚氨酯工业湿度分析。
- 电子微量二氯乙烷（EDC）的，四氯化碳水分分析，小型断路器在PVC和MDI行业。
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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