TDLS8000在线气体分析仪

横河电机的新TDLS™8000功能强大,将诸多先进工业特性集成于一台耐用设备中。其平台设计适用于现场测量,无需进行样品抽取和样品处理。利用非接触式传感器,TDLS8000可以在腐蚀性、刺激性、高粉尘浓度等多种严苛工艺环境中进行测量。第一代平台已在O2CO、CH4NH3H2O及其他多种NIR (近红外)吸收气体的测量方面得到检验。经过改进,第二代平台可靠性更佳,更易安装和维护,同时仍满足甚至超出了设计的应用需求。

激光分析仪性能值得信赖,而且经过专门设计,易于操作和维护,可将用户的诸多需求集成于一台耐用设备中。

 

 

特点

  • SIL2 TruePeak与智能激光技术相结合
  • 直观触摸屏HMI
  • HART和Modbus TCP通信标准
  • 8级自动增益,满足高难度应用。
  • 完全可现场修复,能够存储50天的数据和光谱图。
  • 设计紧凑,一人即可安装,无损坚固性。
  • 场所分类:2区/Div.2或1区/Div.1

系统配置

高可靠性

  • 参比室
    激光模块内的参比室确保微量测量时的峰值锁定。
  • 自动增益
    利用自动增益功能,透光率动态变化时能够有较广的信号范围。

  • 校验
    可以按用户的规定每天、每周或每月进行手动、远程或自动校验。
  • SIL2认证
    IEC61508 SIL设计和认证,用于单台分析仪时符合SIL2级别;用于双分析仪时符合SIL3级别。

TruePeak

通过TruePeak可以测量吸收峰的面积。这样可以消除改变背景气体造成的影响,进行简单的压力、温度补偿。

直观触摸屏HMI

  • HMI具有7.5英寸彩色LCD触摸屏
    操作简单
    提供趋势图等诸多信息,无需PC维护。
    可远程安装

    TDLS8000 TouchScreen
  • 微型显示器
    对光简单,两端显示激光透光率。
    TDLS8000 display

标准规格

测量对象 燃烧废气和过程气体中O2, CO, CO CH4, CO2, CO + CO2, H2O, NH3, NH3 + H2O, H2S, HCl 的浓度
测量系统 可调谐二极管激光分光光度法
测量组分和范围 测量组分 最小范围 最大范围
O2 0-1% 0-25%
CO(ppm) 0-200 ppm 0-10,000 ppm
CO+CH4 CO 0-200 ppm 0-10,000 ppm
CH4 0-5 %
NH3 0-30 ppm 0-50,000 ppm
H2O (ppm) in non HC 0-30 ppm 0-30,000 ppm
H2O (ppm) in HC 0-30 ppm 0-30,000 ppm
CO (%) 0-20 % 0-50 %
CO (%) + CO2 (%) 0-30 % 0-100 %
 NH3 + H2O NH3 0-30 ppm 0-5,000 ppm
H2O 0-5 % 0-50 %
H2S 0-5 % 0-100 %
CO2 (%) 高量程 0-1 % 0-5 %
CO2 (%) 扩展量程 0-30 % 0-50 %
H2O (%) 0-10 % 0-100 %
HCl 0-50 ppm 0-5,000 ppm
输出光程 激光单元和传感器控制单元之间的光距离。标准:0.5~6 m,最大30 m
输出信号 2 点, 4 to 20 mA DC
输出类型:气体浓度、透光率、过程气体温度、过程气体压力
输出范围:3.0~21.6 mA DC
数字通信 HART, 以太网
接点输出 2 点,接点额定值: 24 V DC, 1 A
DO;
功能:警告/标定/校验/预热/维护时激活
故障;
功能:正常状态时激活,故障状态或系统断电时不激活
阀门控制输出
功能:为零点气体、量程气体或校验气体激活标定或验证电磁阀
输出信号;各端子最大24 V DC, 500 mA
报警 警告:
气体浓度低/高、透光率低、过程压力低/高、过程温度低/高、需要校验、校验失败、零点/量程标定错误、非过程报警、外部报警
故障;
激光器模块温度低/高、激光温度低/高、检测器信号高、峰值中心超出范围、参比峰值高度低、吸收率过高、透光率损耗、参比透光率低、参比峰值高度高、激光单元故障、激光器模块故障、文件访问错误、E2PROM访问错误。
接点输入
数字输入)

功能;
外部报警/标定开始/校验开始/流路切换
接点规格:
零点电压接点输入
I输入信号:断开信号≥100 kΩ,闭合信号≤200 Ω
输入信号
模拟输入)
点,4 to 24 mA DC
输入类型:过程气体温度、过程气体压力
自诊断功能 激光单元温度、传感器控制单元温度、激光温度、检测器信号电平、内存读/写功能、峰值锁定条件
标定 标定方法:零点/量程标定
标定模式:手动、自动、本地启动 (HMI)
校验 校验方法:最多ints
校验模式:手动、自动、本地启动 (HMI)
电源 24 V DC ±10%
预热时间 5 分钟
保护等级 IP66, NEMA Type 4X
危险区域等级 Division 1,1区;防爆/隔爆型;FM, cFM, ATEX, IECEx (申请中)
Division 2,   2区;阻燃型/Type n;FM, cFM, ATEX, IECEx, KOSHA, NEPSI
过程气体条件 过程气体温度:最高1500℃
过程气体压力最高 1 MPa,最低90 kPa
过程气体含尘量:不超过 20 g/m3 
安装条件                环境运行温度:-20 to 55℃
存储温度:-30 to 70℃
湿度:40℃(无结露)时为0 ~ 95%RH
气体接口:1/4 NPT 或 Rc1/4
吹扫气体:
   推荐的吹扫气体
   O2 测量:N2 (纯度≥99.99%,取决于应用)
 H2O ppm 测量: N2 (纯度≥99.99%,所含H2O<20 ppm,用于通入烘干机)
CO, CO CH4, CO2, CO+CO2, NH3, NH3+H2O, H2S, HCl;
   N2 (纯度≥99.99%,取决于应用)或仪表空气。CO, NH3测量: N2 (纯度≥99.99%,取决于应用)或仪表空气
吹扫气体流量:
   光学系统5-20 L/min
   过程窗口5-30 L/min 
吹扫气体接口:
   1/4NPT (-G1, -C2, -D2, -C2, -D1, -C1),
   Rc1/4 (-G2, -S2, -E2, -J2, -E1, -J1)

性能

测量气体 重复性 线性
O2 读数的± 1%  ± 0.01% O2浓度值中的较大者 满量程的± 1% 
CO (ppm) 读数的± 2% ± 1 ppm CO浓度值中的较大者 满量程的± 1%
CO + CH4 CO 读数的± 1%  ± 1 ppm CO浓度值中的较大者 满量程的± 2%
CH4 读数的± 4%  ± 0.02% CH4浓度值中的较大者 满量程的± 4% 
NH3 读数的± 2% ± 1 ppm NH3浓度值中的较大者 满量程的± 2% 
非HC中的H2O浓度 (ppm)      读数的± 2% ± 0.1 ppm H2O浓度值中的较大者 满量程的± 1% 
HC中的H2O浓度 (ppm)         读数的± 2% ± 0.1 ppm H2O浓度值中的较大者 满量程的± 1% 
CO (%) 读数的± 1%   ± 0.01% CO浓度值中的较大者 满量程的± 1% 
CO (%) + CO2 (%) CO 读数的± 1%   ± 0.1% CO浓度值中的较大者 满量程的± 1%
CO2 读数的± 1% ± 0.1% CO2浓度值中的较大者 满量程的± 1% 
NH3 + H2O NH3 读数的± 2%  ± 1 ppm NH3浓度值中的较大者 满量程的± 2% 
H2O 读数的± 4%   ± 0.05% H2O浓度值中的较大者 满量程的± 2% 
H2S 读数的± 1%   ± 0.005% H2S浓度值中的较大者 满量程的± 1% .
CO2 (%) 高浓度范围 读数的± 1%   ± 0.005% CO2浓度值中的较大者 满量程的± 1% 
CO2 (%) 延伸浓度范围 读数的± 1%   ± 0.02% CO2浓度值中的较大者 满量程的± 1%
H2O (%) 读数的± 1%   ± 0.004% H2O浓度值中的较大者 满量程的± 1% 
HCL 读数的± 1%   ± 2.5 ppm H2O浓度值中的较大者 满量程的± 2% 

YH8000 HMI单元

YH8000是波长可变半导体激光光谱仪TDLS8000的专用HMI。

  • HMI触摸屏为7.5英寸彩色LCD
  • 操作简单
  • 可远程安装
  • 最多可连接4个单元

规格

显示器 7.5英寸TFT彩色LCD触摸屏面板,640×480像素(VGA)
通信 以太网:RJ-45接口,通信速度:100 Mbps
外壳防护等级 IP65, NEMA Type 4X
重量 4 kg
安装方式 带倾斜功能的分析仪安装(前面、左侧、右侧)、管装或盘装
接线口 1/2NPT or M20 x 2
安装条件 运行温度:-20~55
存储温度:-30~70℃
湿度:10~90% RH (40℃,无结露)
电源 24 V DC ±10%
危险区域等级 Division 2,2区:阻燃型/Type n;FM、cFM、ATEX、IECEx、KOSHA、NEPSI

TDLS8000结构简单坚固,性能可靠,所需的维护操作更少

火焰加热器燃烧安全和生命周期管理

横河电机的TDSL8000通过CO+CH4测量提供可靠的信息,以实现:

Fired Heater Combustion Safety and Lifecycle Management

  • 提高燃烧效率
  • 提升安全性
  • 延长线圈及线圈挂架的寿命
  • 提高过程加热的产能

 

限制氧气浓度

O2测量用于安全和过程监控方面横河电机的TDLS8000氧气浓度计可以实现:

Limited O2 Concentration

  • 无采样系统运行
  • 快速响应分析
  • 无干扰分析
  • 更少的维护操作

 

概述:

Fired heaters are used for various processes in oil refining and petrochemical plants.

概述:

In maintaining and managing industrial plants, monitoring waste water pH/ORP is both a legal obligation and an unavoidable necessity for protecting the environment. Monitoring without an attentive eye can lead to severe consequences.

行业:
概述:

Considering safety and environmental issues such as combustion efficiency and decreasing NOX and CO in exhaust gas, it has become important to control O2 concentration in garbage incineration processes.

概述:

H2S management of exhaust gas in black liquor recovery boilers is required to meet an environmental regulations.

概述:

Industrial Combustion sources such as thermal cracking furnaces and, process heaters play a critical role in the process industry.

概述:

The ammonia (NH3) gas is injected to remove the NOx and thus reduce the NOx concentration in the stack flue gas. With conventional NH3 analyzers that perform measurements indirectly, NH3 concentrations are obtained through a sampling system. Therefore, there are problems with the maintenance and running costs of the sampling system, and time delays in measurement. The TDLS200 Laser Analyzer is the solution to all these problems.

行业:
概述:

O2 measurement in hydrocarbon vapor is used for safety monitoring in vacuum distillation columns in petroleum refining. With conventional paramagnetic oxygen analyzers, O2 concentrations are obtained through an extractive sampling system, which conditions the sample prior to being analyzed.

概述:

Storage tanks are used in a variety of industries ranging from holding crude oil to holding feedstock for vinyl chloride monomer (VCM).

概述:

If water is present after the dry chlorine tower in brine electrolysis plants, the downstream compressor is corroded or the product quality is deteriorated. The moisture level is measured before and after the compressor to prevent the corrosion of the compressor and the deterioration of quality.

概述:

O2 measurement is used to safely recover flue gas containing a high concentration of CO from a converter furnace. With conventional paramagnetic oxygen analyzers, O2 concentrations are obtained through a sampling system to recovery flue gas. Therefore, there are problems with the maintenance and running costs of the sampling system, and time delays in measurement.

行业:
概述:

Spectrometric technology can assess many critical characteristics about products, but it has limits. It can be challenging to determine when the line has been crossed

行业:
概述:

With fired heaters, users hope to get greater efficiency and reduced emissions but often are disappointed. Given the number of fired heaters operating every day and their importance in the process industries, any improvements realized across the board will have huge impacts. More units can reach their potential with some simple changes in work practices and technology upgrades.

概述:

SABIC is a global manufacturer of polymer resins, film and sheet products, special additives, and chemical intermediates. With operations in more than 50 countries, the company has an enormous variety of processes and plant designs to make its range of products. With so many plants, processes and products, there are frequent opportunities to make improvements with hardware and instrumentation.

A case in point is a reaction process in which oxygen gas is sparged into the reactor, and there is a resulting outlet gas stream. Proper and timely measurement of the oxygen content in this outlet stream is of key importance for reaction control and safety. Reaction progress, control of raw materials input, and reaction sequencing are all affected and dependent on the value of the oxygen concentration reading. The reactor contents and outlet stream can also be in the flammable range depending on conditions, so safety and process considerations call for continuous monitoring of the vent line contents.

A Two-Fold Measuring Function

The safety considerations of monitoring oxygen content in the vent line are very important. As long as the oxygen level remains below a limit, the mixture can be kept below the flammable range and will not undergo combustion. If the process allows the concentration to exceed this limit, it shuts off the oxygen flow to the sparging headers. But this safety consideration is only one of the reasons the measurement is important.

Secondly, the amount of oxygen bubbling through the liquid is an indicator of what is happening in the reaction. Oxygen consumption depends on reaction chemistry and it is a direct indication of the status of the process. Accurate reading of overhead oxygen content is especially important for control of reactant addition and temperature control.

The Challenges of Consistent Measurement

Technologies to measure oxygen in a gas stream are not new, and there are countless applications in chemical manufacturing and other industries where oxygen levels need to be monitored. Combustion processes of any size invariably use some type of oxygen sensor in the flue gas stream to maintain efficiency.

SABIC’s situation proved to be more challenging than most typical applications due to a mix of specific conditions. For many years operators struggled while working with paramagnetic and electrochemical cell sensors due to degradation of the cells, moisture and debris from the process. These sensors are both very common and used in a wide variety of oxygen measuring applications, but they have some key limitations that became apparent when reviewing this process.

Paramagnetic analyzers are sensitive to vibrations and cross-contamination from other gases. Although the application for these reactors does not call for measuring trace amounts of oxygen, there are also sensitivity issues at very low concentrations. Electrochemical cells should be replaced routinely and have sensitivity to different pressures, temperatures and cross-contamination.

Our sampling systems experienced high failure rates with electrochemical components including sampling lines being plugged from the process, filter element clogging, and failing pumps. Moreover, since an individual test during production took more than two minutes, a possibility existed that a climbing oxygen level may not be identified soon enough.

Paramagnetic and electrochemical cell oxygen analyzers have a three-month verification frequency, and the manufacturers recommended maintaining this regimen precisely. Although the testing does not take long, production was delayed in some situations while performing the verification. Delays and Emergency work due to the failures of these types of analyzers resulted in a significant amount of lost production. Due to these and other issues, a more robust oxygen analyzer technology was required.

Tuning in to Laser Technologies

One technology used commonly in combustion processes is tunable diode laser (TDL) spectroscopy, capable of detecting and measuring a variety of gasses, including oxygen, within many contexts. Theoretically, it has the capability to measure oxygen when mixed with toluene, but there was some concern about it being practical for this specific application.

A TDL analyzer sends a beam with a controlled wavelength range through the gas being analyzed to determine which products are present based on which specific wavelengths of light are absorbed. The problem in this case related to the duct size, because the transmitter and receiver should be a minimum distance apart to ensure adequate absorption.

The duct diameter here was less than half the normally recommended distance, so there was some concern as to whether it would deliver its full degree of accuracy, or even work at all. SABIC’s engineers felt the potential benefits to be gained were more than enough to justify installing one analyzer as a test. The performance would be easy to evaluate since the existing sensors were still fully operational and working in parallel.

After two weeks of operation, it was clear the Yokogawa TDL analyzers were performing very well (Figure 1). It was true that they were not delivering the full degree of precision they were capable of due to the short scanning distance, but the precision was high enough to satisfy the needs of the process.

Figure 1. While the duct size for this application was smaller than is usually recommended for TDL analyzers, the tunable diode lasers reliably provided readings with a high enough degree of accuracy for the application, while eliminating the maintenance problems associated with the earlier sensing technologies.

Once installed, the new analyzers proved very reliable and required far less validation and maintenance than the earlier technologies. One issue proved to be debris carried into the duct from the process blocking the light transmission path between the transmitter and receiver. Adjustments to a nitrogen purging system and better control of the process itself minimized this effect, leading to virtually trouble-free operation.

Facilitating the Safety Function

All of these TDL analyzers have been installed for over two years now, with no failures due to the TDLA’s to date. Some units were outfitted with the Yokogawa TDLS200 analyzer, while others were outfitted with the Yokogawa TDLS8000 models. There are other manufacturers of this technology but we chose Yokogawa for this application.

There have been occasional visibility blockage incidents, but these are rare after adjustments to the purge system. Overall, these TDL analyzers have supported higher levels of production, and added another layer of protection to the unit.

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