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Leakage detecting fluorescent powders and preparation method therefor

A fluorescent powder and leak detection technology, which is applied to chemical instruments and methods, luminescent materials, and detects the appearance of fluid at the leak point, etc., can solve the problems of labor-intensive, time-consuming, and difficult to completely search manually, and achieve easy to find, The effect of fine and uniform particle size

Active Publication Date: 2016-02-24
SUZHOU JINGTIAN ENVIRONMENTAL PROTECTION TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the field of flue gas environmental protection treatment, there are mainly two methods for the leakage defects of filter components: 1. Use manual search, which consumes a lot of manpower and time. The filtration of large flue gas treatment equipment There are tens of thousands of filter units in the unit, and most of the filter units are of the external filter type. A large amount of dust will adhere to the outer surface of the filter unit. It is difficult to find out the leakage defect manually, and the working environment is also very harsh; 2 , Use the existing luminous powder / fluorescent dyes on the market to search, each flue gas treatment equipment will be equipped with an inspection door at the front end, use luminous powder / fluorescent dyes as a dust medium, simulate the actual operation of the flue gas treatment equipment In the working condition, the luminous powder / fluorescent dye is inhaled into the flue gas treatment equipment. If the filter unit has a leakage defect, the luminous powder will pass through the leaking position to find the leak point, but the luminous powder and fluorescent pigment exist or have poor temperature resistance or are toxic. Harmful, and fluorescent performance decay and other disadvantages that are not suitable for the use of leak detection in flue gas treatment systems;
[0003] Most of the fluorescent pigments in the prior art have poor temperature resistance and cannot meet the application of leak detection in the dust removal system. When the temperature reaches or exceeds the melting point of the fluorescent pigment, the fluorescent pigment will change from solid to liquid and adhere to the surface of the filter unit. Damage to the filter components seriously affects the use

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  • Leakage detecting fluorescent powders and preparation method therefor

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Effect test

Embodiment 1

[0021] Get 1kg of heavy calcium carbonate and 1kg of fluorescent pigment to mix, and its mixing ratio is 1:1, and wherein fluorescent pigment selects the group that contains emission fluorescence in the molecule, as carbonyl, nitrogen-nitrogen double bond, carbon-nitrogen double bond etc., this embodiment Among them are fluorescent groups with hydroxyl groups, auxochrome groups, auxochrome groups that redshift the spectrum and increase fluorescence efficiency, choose primary amino groups, and use polyacrylate resin as the carrier resin;

[0022] The preparation method of the above-mentioned leak detection fluorescent powder comprises the following steps:

[0023] S1: Pre-mixing, take calcium carbonate and fluorescent pigments and put them into a mixing machine and stir until they are evenly mixed, and some particles of calcium carbonate and fluorescent pigments are agglomerated;

[0024] S2: The agglomerated particle material is crushed and sieved, and the mixture obtained in ...

Embodiment 2

[0027] Take 5kg of heavy calcium carbonate and 1kg of fluorescent pigments and mix them in a mixing ratio of 1:5. Fluorescent pigments are selected among them. Amine-based, polyamide resin is selected as the carrier resin of the fluorescent pigment.

[0028] The preparation method of the above-mentioned leak detection fluorescent powder comprises the following steps:

[0029] S1: Pre-mixing, take calcium carbonate and fluorescent pigments and put them into a mixing machine and stir until they are evenly mixed, and some particles of calcium carbonate and fluorescent pigments are agglomerated;

[0030] S2: The agglomerated particle material is crushed and sieved, and the mixture obtained in S1 is put into the sieving equipment for crushing and sieving until the mixture passes through the sieving equipment. At this time, the particles agglomerated with calcium carbonate and fluorescent pigments are dispersed and fluorescent The resin particles are wrapped by calcium carbonate pa...

Embodiment 3

[0033] Take 11kg of heavy calcium carbonate and 1kg of fluorescent pigments and mix them in a mixing ratio of 1:11. The fluorescent pigments are selected to contain carbon-nitrogen double bond groups that emit fluorescence in the molecules, and the color-aiding groups in the molecules are primary The carrier resin of the amine-based fluorescent pigment is polyurethane resin.

[0034] The preparation method of the above-mentioned leak detection fluorescent powder comprises the following steps:

[0035] S1: Pre-mixing, take calcium carbonate and fluorescent pigments and put them into a mixing machine and stir until they are evenly mixed, and some particles of calcium carbonate and fluorescent pigments are agglomerated;

[0036] S2: The agglomerated particle material is crushed and sieved, and the mixture obtained in S1 is put into the sieving equipment for crushing and sieving until the mixture passes through the sieving equipment. At this time, the particles agglomerated with c...

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Abstract

The invention provides leakage detecting fluorescent powders and a preparation method therefor. The leakage detecting fluorescent powders comprise calcium carbonate and a fluorescent pigment, wherein the calcium carbonate and the fluorescent pigment have a weight ratio of 1: (1-38). The preparation method comprises the following steps: S1, premixing, putting calcium carbonate and a fluorescent pigment in a material mixing machine to stir until the mixture is uniformly mixed, wherein part of calcium carbonate granules and fluorescent pigment granules are agglomerated; and S2, crushing and sieving the agglomerated granules. According to the leakage detecting fluorescent powders provided by the invention, the fluorescent pigment and the calcium carbonate are mixed in a certain proportion, the fluorescent pigment granules are wrapped by the calcium carbonate granules, and the fluorescent pigment granules are not directly contacted; as the calcium carbonate is high-temperature resistant, the problems that the fluorescent pigment is softened in a high-temperature environment of 270 DEG C and is sticky to equipment are eliminated, and it is ensured that, light beams with specific wavelengths, released by excitation of the fluorescent pigment through a fluorescent lamp, can be captured. The product is environmentally-friendly, non-toxic and fine and uniform in grain size. The leakage detecting fluorescent powders can easily reach every fine leak along with an air flow, so that a leakage source is quite easily found, and the leakage detecting fluorescent powders are suitable for leakage detection of various smoke treatment systems.

Description

technical field [0001] The invention relates to the detection field of flue gas filtering treatment equipment, in particular to a leak detection fluorescent powder and a preparation method thereof. Background technique [0002] At present, in the field of flue gas environmental protection treatment, there are mainly two methods for the leakage defects of filter components: 1. Use manual search, which consumes a lot of manpower and time. The filtration of large flue gas treatment equipment There are tens of thousands of filter units in the unit, and most of the filter units are of the external filter type. A large amount of dust will adhere to the outer surface of the filter unit. It is difficult to find out the leakage defect manually, and the working environment is also very harsh; 2 , Use the existing luminous powder / fluorescent dyes on the market to search, each flue gas treatment equipment will be equipped with an inspection door at the front end, use luminous powder / flu...

Claims

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Application Information

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IPC IPC(8): C09K11/02C09K11/06C09B69/10G01M3/20
Inventor 陈强马隆高董丹丹郭燕
Owner SUZHOU JINGTIAN ENVIRONMENTAL PROTECTION TECH DEV CO LTD