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Method for automatic collection of ash sample at ash discharge port of coal-fired boiler dry type dust remover

A technology of dry dust collector and coal-fired boiler, which is applied in the direction of sampling device, etc., to achieve the effect of convenient layout, spacious site and uniform particle size

Inactive Publication Date: 2015-11-25
解海龙
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to overcome the shortcomings of traditional sampling methods, the present invention proposes a brand new sampling method

Method used

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  • Method for automatic collection of ash sample at ash discharge port of coal-fired boiler dry type dust remover
  • Method for automatic collection of ash sample at ash discharge port of coal-fired boiler dry type dust remover
  • Method for automatic collection of ash sample at ash discharge port of coal-fired boiler dry type dust remover

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Experimental program
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Effect test

Embodiment approach

[0023] 1. Pneumatic sampling method

[0024] Such as figure 2 Shown: When the compressed air (6) passes through the nozzle (10), a negative pressure is formed at its outlet, and the fly ash (2) is sucked into the sampling funnel (7) and mixed with the compressed air (6) into the diffuser (9), after being pressurized by the diffuser tube (9), it leaves the sampling part (4), and after separation, it becomes ash sample (5) and provides it to the detection instrument. Controlling the switch of compressed air valves (such as solenoid valves) as needed can realize the process of continuously providing ash samples to the testing instruments.

[0025] 2. Electromechanical sampling method

[0026] Such as image 3 As shown: the motor (12) drives the screw device (11) or the crank link mechanism (14), due to the rotation of the screw device (11) or the reciprocating movement of the sampling scraper piston (13), it will fall into the sampling funnel (7 ) fly ash (2) is pushed to th...

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Abstract

A method for automatic collection of an ash sample at an ash discharge port of a dry type dust remover is mainly used for collection of a coal-fired boiler combustion product-the fly ash sample; the method can avoid a lot of shortcomings of poor sample representative, tube blocking and low device reliability of a traditional flue sampling method. The method is characterized in that a sampling point is removed to an outlet below an ash dropping hopper of the first-level dry type dust remover from a flue, the fly ash at the outlet is automatically extracted according to the detection required quantity and time interval by a power-driven or pneumatic way and is delivered to a testing instrument, and online testing of the combustible substance content or other components in the boiler fly ash is carried out.

Description

technical field [0001] The invention relates to an automatic sampling method of fly ash, the combustion product of a large coal-fired boiler. The method will be used for on-line detection of combustible content or other components in the boiler fly ash. Background technique [0002] On-line detection of combustible content of fly ash in combustion products is an important basis for optimizing combustion control of coal-fired boilers. Whether representative ash samples can be collected automatically and continuously is the key to detection. Traditional sampling methods and their limitations are as follows: [0003] 1. The common feature is that the sampling point is arranged in the flue (usually at the exit of the flue), and the ash sample is extracted from the flowing flue gas and separated to obtain the ash sample, which belongs to "point" sampling. Due to the structure of the flue, there are not enough straight pipe sections at the sampling point. Under the action of unev...

Claims

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Application Information

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IPC IPC(8): G01N1/10G01N1/14
Inventor 王金铭解海龙
Owner 解海龙
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