OXT1000 zirconia analyzer for thermal power plants

In thermal power plants, boiler combustion efficiency is a key factor affecting the overall economic and environmental performance of the power plant. The OXT1000 zirconia analyzer is installed with a straight in flange, and the online monitoring of flue gas oxygen content is the core indicator of combustion efficiency, which directly affects whether the fuel is fully burned and whether the emissions meet the standards. The OXT1000 zirconia analyzer adopts flange installation, direct insertion zirconia probe, stainless steel protective tube, LCD LCD display, supports Chinese and English switching, multiple output interfaces: 4-20mA output, supports HART protocol, RS485 communication full function, high-precision measurement: accuracy up to 1%, range 0-25%, high temperature resistance design: flue gas temperature resistance 0-700 degrees, suitable for high temperature environment in power plants, insertion depth length 0-1500mm can be customized, protective tube material can be selected from 316L or 304 stainless steel,OXT1000 Zirconia Analyzer Model: OXT1PA, OXT1PB, OXT1PC, OXT1PD, OXT1PE

Selection case:

Case 1: 125MW Unit of Heze Power Plant - Leakage Diagnosis and Energy Consumption Optimization

During operation at Heze Power Plant, it was found that the oxygen content was only 4.0% under high load, and the unit consumption of the air supply fan increased abnormally by 0.45 kWh/tq. Based on the abnormal exhaust temperature (21 ℃ lower on side A than side B), it is preliminarily determined that the preheater is leaking air. After the thermal test confirmed that the air leakage rate of the preheater on side A was as high as 18%, the power plant shut down and sealed the air leakage pipeline. After processing, the power consumption rate of air supply under the same load and oxygen content decreased by 0.029%, and the power consumption rate of induced draft decreased by 0.009%, with significant comprehensive energy-saving benefits.

The factory uses zirconia oxygen signal for air volume command correction, and dynamically adjusts the opening of the air supply fan spoon tube through the air supply control system to achieve air oxygen balance.

Case 2: A 350MW unit at a power plant in Shanxi Province

A power plant in Shanxi has installed two sets of zirconia analyzers on both sides of the flue from the outlet of the economizer to the inlet of the air preheater, using low selection or average values as control signals.

The OXT1000 zirconia analyzer is selected, which has the characteristics of corrosion resistance, high temperature resistance, and maintenance free, and is suitable for complex boiler operating conditions.

After three years of operation, the stability of air supply regulation has significantly improved, meeting the demand for load changes and maintaining stable equipment performance.

Case 3: 300MW Heating Unit Wind Oxygen Cascade Control of Harbin Heat Company

Harbin Heat Company's 300MW heating unit innovatively adopts a wind oxygen cascade control system architecture

The system adopts a load oxygen function relationship to dynamically set the target value (such as 3.5% oxygen corresponding to a load of 1000t/h), and avoids the risk of oxygen deficiency caused by coal quality fluctuations through oxygen rich combustion control.

Main technical parameters:

**LCD display * *, supports switching between Chinese and English

**Multiple output interfaces * *: 4-20mA output, supporting HART protocol, RS485 communication with full functionality

**High precision measurement * *: accuracy up to 1%, range 0-25%

**High temperature resistant design: Smoke can withstand temperatures from 0 to 700 degrees Celsius, suitable for high temperature environments in power plants

**Flexible configuration * *: The insertion depth length can be customized from 0-1500mm, and the protective tube material can be selected from 316L or 304 stainless steel

The OXT1000 zirconia analyzer has been widely used in enterprises such as Datang Power, Xiexin Power, Yangmei Group, Guoneng Power, and China Resources Power.

Selection Notice:

(1) Smoke medium

(2) Smoke pressure

(3) Range of measurement

(4) Flange size

(5) Insertion depth length