Coke oven gas oxygen analyzer (electric tar trap oxygen content analyzer) electric coke trap oxygen controller

There are three principles for the on-line oxygen analysis system of coke oven gas in a coking plant:

1. Electrochemical Oxygen Analyzer

Second, the original imported Siemens magnetic oxygen analyzer

3. Laser Analyzer (Originally Imported from Vaisala)

TR-9200 This system is a kind of electrical instrument equipment specially designed and matched for the online continuous detection of O2 content of the gas content of the electric coke catcher. It integrates machine, electricity and instrument into one, with high reliability, first-class sensors, advanced measurement technology and sophisticated sampling pretreatment. It is composed of perfect functions, safe and reliable, small maintenance, easy operation and use. Long-life process analysis system. The system adopts international advanced and first-class sampling and pretreatment technology to purify and process tar, coal dust, water vapor, naphthalene, hydrogen sulfide and other corrosive substances in coke oven gas, ensuring long-term online operation of analytical instruments. Compared with similar products, it has high technical advantages and cost-effective advantages.
Scope of application:
This device is suitable for the measurement of oxygen content in various electric coke catchers and various types of furnace gas pipelines. Through automatic analysis of oxygen content, it can realize the safety interlock control of the equipment.

Composition and function of analysis control device The device is a complete set of analysis control device of machine, electricity and instrument. The whole device is composed of analysis cabinet components (including sample purification processing unit, control purge unit and analysis proofing unit, etc.) and special sampling device components installed on the process pipeline.
Special sampling device: intrinsically safe explosion-proof. It is the first-stage sample purification processing unit of all stainless steel. Aiming at the severe working condition that the harmful components contained in the coke oven gas are extremely complicated, the international advanced scroll tube refrigeration detar, naphthalene, water vapor and dust filtering technology is adopted to achieve the purpose of primary purification of sampling and purification.
Analysis cabinet components: The analysis cabinet adopts positive pressure inflation explosion-proof structure.
The analysis cabinet contains the following units:
Pretreatment unit: the intermediate stage purification treatment of tar, naphthalene and other components is completed by special liquid filters (washing tank, mist filter, equivalent components of desulfurizer); by the condenser, peristaltic drain pump, deflow, Fine filters and other components are used to complete the fine-level purification treatment; the samples are composed of special anti-corrosion suction pumps, flow controllers, etc. to obtain gas and stabilize the flow of the sample. Ensure that the coke oven gas sample is purified, dedusted, dehumidified, In a series of links such as voltage stabilization and steady flow, the filtration accuracy can reach 0.1μ. The sample gas that meets the requirements is sent to the analytical instrument to ensure the accuracy and long-term reliability of the analytical instrument.

Analysis control interlocking unit: the oxygen analyzer completes the online continuous analysis of the oxygen content of the sample gas, and continuously outputs a 4-20 mA signal. The oxygen analyzer has an alarm output contact, which can set the alarm and interlock value within the range of the range. When the O2 concentration exceeds the limit, the alarm and interlock will be performed.
If necessary, please contact me, Zhang Bin 18789429993

Technical parameters and instructions:
Technical parameters: (working conditions of on-site sampling and analysis point of coke oven gas electric coke catcher)
Sampling point location: coke oven gas electric coke catcher outlet analysis parameter: O2 (analysis principle can be selected: electrochemical, magnetic oxygen or laser analyzer, its price is quite different)
Measuring range: O2: 0-2% (when it reaches 1%, O2 outputs the alarm node signal, free setting)
Measured gas temperature: 40 ～ 60 ℃
Dust content: trace water content: medium tar content: a small amount of other corrosive components (S O2): a small amount of crystals (naphthalene): a small amount of pipeline pressure: micro-positive pressure product details analysis cabinet components and devices technical parameters: by pre-processing Unit, power supply unit, analysis and proofreading unit.
(1) The pre-processing unit includes:
Special filter components (nai, tar), gas-liquid separator, dehumidifier, suction pump (imported parts), fine desulfurization pipe, flow regulator, etc. Through the comprehensive purification treatment of coarse and fine three-stage filtration and separation, absorption of dust, tar, naphthalene, acid mist, and cooling and dehumidifying water, it provides ultra-clean analytical gas source for analytical instruments.
(2) The power supply and control unit includes:
Power control panel (including high-performance air switch, wiring terminals), output fault alarm contact signal; with data collection, automatic processing of oxygen content content limit alarm function. Control central PLC, two-position three-way solenoid valve, etc.
(3) The analysis unit includes:
JNYQ-O-11C oxygen analyzer (imported sensor), flow meter, flow switching valve, standard sample gas, etc.
(4) Over-limit alarm function:
The analyzer performs continuous online analysis of the purified gas sample and outputs a 4-20mA signal and a passive electric shock signal. If the oxygen concentration exceeds the limit, the device immediately outputs an alarm contact signal (passive contact, capacity 1A) to ensure the safe operation of the electric coke catcher equipment.
(5) Measuring range and analysis accuracy:
Measuring object and measuring range: 0-2% O2
Accuracy: ≤ ± 1% FS
Linearity error: ≤ ± 1% FS
Device system response time: T90 ＜ 15S
(6) Signal output:
The large-screen LCD digital display on the spot shows the content of O2 and isolates and outputs to the upper computer or DCS with a 4-20mA component signal. Over-limit alarm, interlock and fault alarm signal output and capacity:
The alarm value of the oxygen concentration exceeding the limit can be set separately within the range of the instrument (the concentration alarm value is set at the factory: 0.80%, O2). The alarm signal output passive contact, capacity: 220VAC, 1A
(7) Pretreatment function of the device: stainless steel sampling probe, tertiary dust removal, sulfur removal, naphthalene removal, tar removal, acid mist removal, moisture removal, voltage stabilization, steady flow, rapid release, dust purification accuracy ≤0.1u
(8) Device maintenance cycle: ≥30 days 3. Design plan and configuration instructions
1. Configuration principles:
The important key components (such as air pump, sensor, PLC, etc.) in this analysis device are imported from the original, and other key, main and general components that can be guaranteed for long-term use are manufactured by domestic joint ventures and factories, and are minimized Operational cost of later maintenance.
2. The main technical features of this analysis device are as follows:
This device is designed according to "turnkey" engineering. In addition to the sampler and the special filter assembly, the sample gas pretreatment unit, power supply unit and analysis proofreading unit are all placed in the analysis cabinet, which has been debugged before leaving the factory. Only the user needs to install the probe, auxiliary sampling line, peripheral power supply and analysis cabinet in place. At that time, the supplier will send technicians to the site to guide the installation and commissioning.
3. The analysis cabinet is made according to the national standard, and a large observation window is opened to facilitate the operator to inspect and maintain. .
4. The system's full dry process will not affect the sampler, sampling tube, various types of pipe joints (the part in contact with the sample gas) and the suction pump are all anti-corrosion design. The pumps are made of anti-corrosion stainless steel, PTFE material or special anti-corrosion treatment, which improves the anti-corrosion of the system. Ensure the service life of the system.
5. The use of automatic dehumidifier has the characteristics of long service life, small maintenance workload, stable dehumidification effect, etc. The residual water vapor in the sample gas will be completely removed, so as to achieve the purpose of drying the sample gas and avoid the interference of water vapor on the instrument.
For technical details, please consult! Zhang Bin 15091580679 18789429993
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To make the analyzer you ordered accurate and applicable, please fill in the following:
1. The test group and its actual concentration range.
2. The required range of the analyzer.
3. The components contained in the background gas and their actual concentrations.
4. Measurement of gas contamination: such as tar mist, flue dust, corrosive components, moisture, etc.
5. Attachments are required.
6. Other requirements.