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Normal position zero gas back-blowing type CEMS (continuous emission monitoring system) probe on-line calibration method and device

An on-line technology for calibration devices and probes, which is applied to measuring devices, material analysis through optical means, instruments, etc., can solve problems such as the inability to balance the intake of flue gas, and achieve avoiding direct contact with flue gas, long service life, and guaranteed reliability effect

Active Publication Date: 2014-07-23
天津市蓝宇科工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] From the experimental results in Table 1, it can be seen that the air intake of back blowing gas alone cannot be balanced with the air intake of flue gas

Method used

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  • Normal position zero gas back-blowing type CEMS (continuous emission monitoring system) probe on-line calibration method and device
  • Normal position zero gas back-blowing type CEMS (continuous emission monitoring system) probe on-line calibration method and device
  • Normal position zero gas back-blowing type CEMS (continuous emission monitoring system) probe on-line calibration method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0048] Embodiment: As shown in the figure, an in-situ zero-gas blowback CEMS probe online calibration device includes a direct-measurement flue gas probe 1, a probe chassis 2, a blocking device and a calibration pool 5;

[0049] The direct-measurement flue gas probe 1 is a pipe body, and its front end is provided with a measurement area 6. The measurement area is a measurement port with an opening downward, and air curtain generators 9 are respectively embedded in the probes 1 before and after the measurement area. , the air curtain generator 9 communicates with the purified compressed air input pipe 10; wherein, the air curtain generator 9 located at the rear end of the measurement area 6 is embedded with an ultraviolet quartz window 8, and the ultraviolet quartz window 8 is sealed with an O-ring 26 and is located at the probe 1 There is an ultraviolet quartz lens 7 embedded in the groove at the top, and the ultraviolet quartz lens 7 is sealed with an O-ring 26; a convex lens ...

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Abstract

The invention discloses a normal position zero gas back-blowing type CEMS (continuous emission monitoring system) probe on-line calibration method and device, and belongs to fume on-line continuous monitoring and calibrating. According to the device, a probe is not extracted, a probe measuring region is provided with a shield, pressure for providing a system for performing back-blowing is regulated through shielding the probe measuring region, excessive back-blowing is performed on the measuring region, and fume in the measuring region is evacuated; zero air is fully filled in a calibration pond, the zero creep calibration operation is performed on the system, the calibration pond is fully filled with range point standard air, and the range drifting calibration operation is performed; the calibration is finished, the calibration pond is filled with the zero air again; and finally, the shield in the measuring region is withdrawn, the compressed air back-blowing pressure is regulated, and the system is at a normal measuring condition. The normal position zero air back-blowing type CEMS probe on-line calibration method and device provided by the invention can perform completed original light path on-line calibration under the condition that the probe is not extracted in a measuring system, and a measuring light path and a calibration light path are completely consistent.

Description

technical field [0001] The invention belongs to a method and device for on-line continuous monitoring and calibration of flue gas, in particular to an on-line calibration method and a calibration device of an in-situ zero-gas backflush type CEMS probe. Background technique [0002] Harmful gases emitted by stationary pollution sources are mainly composed of sulfur dioxide, SO 2 Composed of nitrogen oxides and NOx, they are the main polluting gases that cause air pollution. The country's investment in and emphasis on flue gas monitoring is gradually increasing. For the direct-measurement flue gas sampling probe, due to the direct contact with the flue gas and the influence of the harsh environment of the flue gas, online calibration is required. At present, enterprises and scientific research institutes at home and abroad have little research on online calibration of direct-measurement flue gas continuous monitoring. The online calibration implementation forms of various man...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/00G01N21/33
Inventor 赵玉梅陈洋张弛王臣
Owner 天津市蓝宇科工贸有限公司
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