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Manufacturing method of boiler spent smoke desulfurizer using salt mud

A boiler flue gas and production method technology, applied in the field of desulfurizers and boiler flue gas desulfurizers, can solve environmental pollution and other problems, and achieve the effect of reducing air pollution

Inactive Publication Date: 2008-06-25
张长江
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The discharge of salt mud will cause serious pollution to the environment. The comprehensive utilization of salt mud has been a long-term concern of chlor-alkali production enterprises. Some use salt mud to make plastic rubber packing, and some use salt mud to make magnesium oxide as refractory materials. Yes, but there is no report on using salt mud to make boiler flue gas desulfurizer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0007] Example 1, a kind of salt mud is used as the manufacture method of boiler flue gas desulfurizer, described salt mud contains calcium oxide 35%, silicon oxide 5%, magnesium oxide 15%, sodium chloride 3%, water 42%, the above-mentioned Weigh 100 kg of salt mud, add 30 kg of quicklime powder, stir evenly, send it to a dryer for drying treatment, and then weigh: 70 kg of salt mud after treatment, 15 kg of hexamethylenetetramine, 15 kg of sodium tetraborate After mixing evenly, crush to 100-200 mesh. Add 3 times the amount of sulfur in the coal to the coal, stir evenly, and burn in the furnace with the coal.

example 2

[0008] Example 2, a kind of salt mud is used as the manufacture method of boiler flue gas desulfurizer, described salt mud contains calcium oxide 30%, silicon oxide 6%, magnesium oxide 20%, sodium chloride 4%, water 40%, the above-mentioned Weigh 100 kg of salt mud, add 35 kg of quicklime powder, stir evenly, send it to a dryer for drying treatment, and then weigh: 80 kg of salt mud after treatment, 10 kg of hexamethylenetetramine, 10 kg of sodium tetraborate After mixing evenly, crush to 100-200 mesh. Add 3 times the amount of sulfur in the coal to the coal, stir evenly, and burn in the furnace with the coal.

[0009] The present invention is carried out respectively with 2.84% and 2.48% sulfur content in coal.

[0010] The desulfurization effect is as follows:

[0011] Before desulfurization After desulfurization

[0012] Sulfur content in coal Sulfur content in ash Sulfur content in ash Desulfurization rate (%)

Embodiment

[0013] Example 12.84 0.28 2.15 65.8

[0014] Example 22.48 0.22 1.71 60.1

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PUM

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Abstract

A process for preparing the desulfurizing agent of boiler fume from salty mud which contains calcium oxide, silicon oxide, magnesium oxide, sodium chloride and water includes such steps as adding calcium line to said salty mud, stirring, drying, proportionally mixing with hexamethylene tetraamine and sodium tetraborate, stirring and pulverizing. It can be mixed with coal to reduce sulfur by 55-66%.

Description

technical field [0001] The invention relates to a desulfurizer, in particular to a boiler flue gas desulfurizer made from waste residue and salt mud in the chlor-alkali industry, and belongs to the technical field of chemical industry. Background technique [0002] Salt mud in the chlor-alkali industry is the slurry discharge produced during the brine refining process of caustic soda and soda ash. The clarified brine obtained after brine refining and separation is refined brine, and the precipitated discharge is called salt mud. The produced salt mud mainly contains calcium oxide, silicon oxide, magnesium oxide and sodium chloride. The discharge of salt mud will cause serious pollution to the environment. The comprehensive utilization of salt mud has been a long-term concern of chlor-alkali production enterprises. Some use salt mud to make plastic rubber packing, and some use salt mud to make magnesium oxide as refractory materials. However, there is no report on the use of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/50
Inventor 张长江谭文哲周丽路桃妮杨卫明兰建平卫红勤刘文韦淑坤兰海霞
Owner 张长江