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Dust cleaning method and equipment by using cloth bag of desulfurization and fluorine removal

A bag filter and bag filter technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve problems such as air pollution, achieve long service life, reduce content requirements, and achieve high desulfurization, defluorination, and dust removal efficiency. Effect

Inactive Publication Date: 2005-08-31
JIANGSU KEHANG ENVIRONMENT ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing bag filter, because the sulfur and fluorine in the dusty gas are mainly in the form of SO 2 , SO 3 , HF gas exists in the form, after bag filtration, SO 2 , SO 3 、HF gas cannot be intercepted, only dust and other particles are intercepted after being filtered by cloth bags, while SO 2 , SO 3 , HF gas passes through the cloth bag, and is discharged from the dust collector with the airflow, SO 2 , SO 3 , HF and other toxic gases are also discharged into the atmosphere, causing air pollution

Method used

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  • Dust cleaning method and equipment by using cloth bag of desulfurization and fluorine removal

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Example 1: A bag dust removal device for removing toxic substances sulfur and fluorine in dust.

[0017] Contains a container 5 for storing chemical powder. The container 5 is set on the top of the bag filter. The upper part of the container 5 is provided with an openable feeding port 4. A γ-ray level gauge 6 is installed in the container 5. The container 5 passes through the controllable valve 3. It communicates with the compressed air inlet 2 and is controlled by the control system to adjust the required pressure. There are also multiple connecting pipes 7 leading to the inner chamber of the working chamber 10 of the bag filter at the bottom of the container 5. The connecting pipes 7 are equipped with adjustable The control valve 8, the outlet end of the connecting pipe 7 is equipped with a nozzle 9, and the nozzle 9 is placed in the inner chamber of the working chamber 10 of the bag filter.

Embodiment 2

[0018] Example 2: The method of bag dust removal for simultaneously removing the toxic substances sulfur and fluorine in the dust.

[0019] First, clean the inner cavity of the working room 10 of the bag filter, and then remove the SO2 in the flue gas 2 , SO 3 The chemical powder CaO, which reacts with HF to generate non-toxic chemical substances, is added into the container 5 from the feeding port 4, and the compressed air enters the container 5 from the compressed air inlet 2 through the controllable valve 3 and through the connecting pipe 7. Under the control of the control system, The CaO powder is sent through the controllable valve 8 into the working room 10 of a certain bag filter after the dust has been cleaned and settled, sprayed out through the nozzle 9, and sprayed on the bag 11 in the working room 10 of the bag filter. On the surface, due to the homogenization and dispersion of the nozzle and the gravity of the CaO powder, the CaO powder will evenly adhere to the...

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Abstract

A cloth-bag duster for removing sulfur and fluorine compounds fume is composed of a dusting chamber, chemical powder container, compressed air source, and nozzle in said dusting chamber. Its dusting method includes spraying the chemical powder onto the surface of cloth bag, reaction between said chemical powder and water vapor in fume to obtain resultant, reaction between said resultant and the sulfur oxide and fluoride to become non-toxic chemicals, and discharging them along with the dust. It is suitable for cement production.

Description

Technical field: [0001] The invention relates to a bag dust removal method and equipment in the cement production industry, in particular to a bag dust removal method and equipment for desulfurization and fluorine removal. Background technique: [0002] my country's cement industry is a major polluter, and a large amount of waste water, dust, and harmful gases generated in the production process are discharged outside, seriously affecting people's living environment, and environmental protection is urgent. At present, the function of dust removal equipment commonly used in the cement industry only stays in the control of dust concentration. The commonly used dust removal method is to use a cloth bag to remove dust. Under the action of the main fan of the system, the dust-laden gas enters the intake pipe through the flue, and enters the dust collector from the upper part. Part of the particles directly fall into the ash hopper due to inertia, and the rest pass through the cl...

Claims

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Application Information

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IPC IPC(8): B01D46/02B01D53/82
Inventor 刘怀平
Owner JIANGSU KEHANG ENVIRONMENT ENG TECH
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