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Synergy scale inhibition heavy metal remover of wet desulphurization system and preparation method thereof

A heavy metal and remover technology, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve problems such as nozzle fouling, nozzle clogging, inability to effectively remove scale samples, etc., and achieve the effect of increasing solubility

Inactive Publication Date: 2017-09-08
北京可林维尔化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sediment and dust depend on each other and firmly adhere to trays and nozzles, causing fouling of trays and nozzles, clogging nozzles and trays
The scale inhibitors in the prior art cannot effectively remove scale samples, and the effect needs to be improved; therefore, the development of new scale inhibitors is a direction that requires efforts

Method used

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  • Synergy scale inhibition heavy metal remover of wet desulphurization system and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment provides a synergistic and scale-inhibiting heavy metal remover. The raw material components are calculated in parts by weight and include:

[0036] 15 parts by weight of 2-hydroxyphosphonoacetic acid, 8 parts by weight of polyepoxysuccinic acid, 25 parts by weight of glutaric acid, and 20 parts by weight of sodium sulfide.

[0037] All the raw material components are mixed uniformly to obtain a synergistic anti-scaling heavy metal remover.

Embodiment 2

[0039] This embodiment provides a synergistic and scale-inhibiting heavy metal remover. The raw material components are calculated in parts by weight and include:

[0040] 10 parts by weight of 2-hydroxyphosphonoacetic acid, 10 parts by weight of polyepoxysuccinic acid, 20 parts by weight of glutaric acid, and 25 parts by weight of sodium sulfide.

[0041] All the raw material components are mixed uniformly to obtain a synergistic anti-scaling heavy metal remover.

Embodiment 3

[0043] This embodiment provides a synergistic and scale-inhibiting heavy metal remover. The raw material components are calculated in parts by weight and include:

[0044] 20 parts by weight of 2-hydroxyphosphonoacetic acid, 5 parts by weight of polyepoxysuccinic acid, 30 parts by weight of glutaric acid, and 15 parts by weight of sodium sulfide.

[0045] All the raw material components are mixed uniformly to obtain a synergistic anti-scaling heavy metal remover.

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Abstract

The invention relates to a synergy scale inhibition heavy metal remover of a wet desulphurization system and a preparation method thereof. The synergy scale inhibition heavy metal remover comprises the following raw materials by weight: 10-20 parts of a chelating agent, 5-10 parts of a dispersing agent, 20-30 parts of a desulphurization synergist and 15-25 parts of the heavy metal remover. The preparation method comprises the following steps: uniformly mixing all raw materials. The provided synergy scale inhibition heavy metal remover has the functions of scale inhibition, and corrosion prevention and inhibition, and is capable of improving the utilization ratio of limestone, chelating and fixing the heavy metals in the slurry liquid in gypsum, reducing the blocking, scaling, corrosion and abrasion of a desulphurization nozzle, improving the desulphurization efficiency of a desulfurizing tower, reducing the scaling, corrosion and abrasion of a slurry circulating pump and an impeller, reducing the maintenance and replacement of spare parts in the desulphurization system, reducing the use dosage of the limestone, reducing the environment pollution caused by the external discharge of the heavy metals in desulphurization waste liquid, and reducing the desulphurization cost.

Description

Technical field [0001] The invention relates to the technical field of scale inhibitor preparation, in particular to a heavy metal remover for synergistic scale inhibition of a wet desulfurization system and a preparation method thereof. Background technique [0002] After the boiler's flue gas desulfurization system is put into operation, there will be problems with desulfurization pipelines, trays, tower walls, and nozzle fouling. Tray fouling causes increased operating resistance, and nozzle fouling and spray unevenness increase negative force, desulfurization The efficiency drops and the operation cycle is shortened. Generally, it is necessary to stop the operation of the desulfurization system at an interval of two months, and it takes a few days to clean the trays, which puts a lot of pressure on the environmental protection work of the enterprise and increases the maintenance cost. It is found through the test panel that the main component of the scale sample is sulfate, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/50B01D53/80
CPCB01D53/502B01D53/80B01D2251/404B01D2251/606B01D2258/0283
Inventor 王振江王方圆王学博
Owner 北京可林维尔化工有限公司