Stable ultra-low emission pulse-jet bag-type dust collector

Abstract

The invention relates to a stable ultra-low emission pulse-jet bag-type dust collector which comprises lifting devices and a plurality of rows of pulse-jet bag-type dust collectors. Each pulse-jet bag-type dust collector comprises a plurality of dust chambers; each dust chamber comprises an upper box, a middle box and an ash hopper; a movable progressive bag jetting device is arranged above each upper box; a plurality of clustered modular filter bag assemblies are arranged in each middle box; the plurality of clustered modular filter bag assemblies are jointed and mounted at a transfer storageposition; each clustered modular filter bag assembly comprises a tube nest and through holes for hanging of filter bags are formed in the tube nest in the form of an N1*N2 array; a uniform rising-airflow distribution channel is disposed between the filter bag assemblies; an air outlet channel and an air inlet channel are formed between the plurality of rows of dust collectors; the air inlet channel is connected to each dust chamber through a branch air inlet pipe and an air inlet valve is arranged on the branch air inlet pipe; an intake air balancing guide plate is arranged in front of an airinlet; and a descending off-line valve is mounted on the top of each upper box. According to the invention, ultra-low emission of the stable ultra-low emission pulse-jet bag-type dust collector is realized.

Description

technical field [0001] The invention relates to the technical field of environmental protection equipment, in particular to a pulse-jet bag-type dust collector capable of stabilizing ultra-low emissions. Background technique [0002] The pulse bag filter is a bag filter that removes dust by pulse back blowing. The pulse-jet bag-type dust collector adopts the technology of blowing and cleaning dust one by one with a large-flow pulse valve. Compared with other dust collectors in China, it has the characteristics of large dust-cleaning capacity and high dust-cleaning efficiency. The flue gas dust removal effect for the boiler is extremely obvious. It is of great significance to environmental protection, energy saving and emission reduction, and clean production. [0003] But at present, the structure of the pulse jet bag filter has the following shortcomings: [0004] 1. The pulse injection device of the pulse injection bag filter adopts the method of setting multiple rows o...

AI Technical Summary

Problems solved by technology

The fixed blowing pipe installed above the opening of each row of cloth bags will hinder and interfere with the smooth gas flow field in the upper box of the dust collector, that is, the air intake chamber

[0005] 2. The cross-sectional area of ​​the air inlet of each chamber of the pulse jet bag filter is too small, resulting in uneven air distribution and excessive resistance of the dust collector. At the same time, large particles in the flue gas cannot be fully and effectively settled and separated.

[0006] 3. Manually open the top cover of the upper box and replace the cloth bag. The labor intensity of the operators is high, and there are certain safety hazards in high-altitude operations.

In addition, in order to facilitate the manual opening and handling of the top cover of the upper box, the top cover adopts a small cover, which may easily cause the problem of high air leakage rate of the dust collector.

[0007] 4. The off-line valve used in the existing multi-chamber pulse-jet bag filter cannot effectively automatically adjust the valve opening degree, and the pressure difference between each chamber of the dust collector cannot realize the automatic balance adjustment function, which will cause multi-chamber pulse jet The resistance of each chamber of the bag filter is unbalanced, which cannot ensure that each chamber of the pulse jet bag filter can fully exert the dust removal efficiency, and cannot meet the ultra-low emission requirements stably and reliably

[0008] 5. The bag mouth of the filter bag and the flower plate are fixed and sealed. Due to the deformation of the bag mouth of the filter bag or the swing of the filter bag, the sealing gap between the bag mouth of the filter bag and the flower plate increases, resulting in poor sealing, and the discharge of the dust collector exceeds the standard, which cannot meet the national regulations. ultra-low emission requirements

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