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Explosive type back-blowing method

A back-purging and filter technology, which is applied in separation methods, chemical instruments and methods, liquid/fluid solid measurement, etc., can solve problems that affect the stable operation of analytical instruments, cannot be blown clean of dirt, and filter blockage, etc., to achieve The effect of reducing labor intensity, improving operation rate and reducing failure rate

Inactive Publication Date: 2007-07-11
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The disadvantages of the above two back-purging methods are: when the back-flushing gas reaches the outer wall of the filter element, the energy has been reduced to a very low level, and the dirt hanging on the outer wall cannot be blown away. Over time, the filter will be blocked and affect The stable operation of the analytical instrument

Method used

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  • Explosive type back-blowing method

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Embodiment Construction

[0011] As shown in Figure 1, a blasting back-purging method, the process pipeline 1 is connected to the filter 2, the filter 2 is provided with a heater 3 outside, and electromagnetic valves SV1 and SV3 are arranged between the filter 2 and the analysis instrument 5; Solenoid valves SV2 and SV4 are connected between SV1 and SV3, the other end of solenoid valve SV2 is connected to the filter, the other end of solenoid valve SV4 is connected to nitrogen storage tank 4, and an electric control pneumatic ball valve is added between the process pipeline and the filter SV5.

[0012] Its working process is described as follows:

[0013] Normal operating state: solenoid valves SV2 and SV4 are closed, SV1, SV3 and SV5 are opened, and the sample gas enters the analysis instrument through the filter.

[0014] Back purge state: (back purge control is controlled by programmable controller)

[0015] 1) Explosive purge filter element: solenoid valves SV2 and SV3 are closed, SV1 and SV4 are...

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Abstract

The explosive anti negative sweeping has filters on the process tunnel, heater outside the filter, electromagnetic valve SV1 and SV3 between the heater and analysis instrument, SV2 an SV4 connected between the SV1 and SV3, the other end of the SV2 connected to the filter, the other end of the SV4 connected with the nitrogen storage can, and a electric control pneumatic ball valve SV5 being set between the process tunnel and the filter. It has good sweeping effect. It improves the operation rate of the equipment, reduces the failure rate, ensures the stable running, improves economic benefits, and alleviates labor of the maintaining staff.

Description

technical field [0001] The invention relates to the technical field of application of industrial on-line gas composition analysis instruments, and can be widely used in the stable operation of analysis instruments under various complex process conditions. Background technique [0002] At present, the sample gas pretreatment device of the domestic industrial online gas composition analysis instrument mostly adopts the sampling method of sample gas filtration, and the cleaning of the filter adopts the gas back-purging method. There are two kinds of back-purging methods: 1. Continuous filter Purging of the filter; 2. Continuous and pulsed cleaning of the filter. [0003] The disadvantages of the above two back-purging methods are: when the back-flushing gas reaches the outer wall of the filter element, the energy has been reduced to a very low level, and the dirt hanging on the outer wall cannot be blown away. Over time, the filter will be blocked and affect The stable operati...

Claims

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Application Information

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IPC IPC(8): G01F15/12B01D46/42
Inventor 叶建伟赵斌
Owner ANGANG STEEL CO LTD