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Corrosion and scale inhibitor for reuse of reclaimed water from production wastewater as circulating cooling water

A technology of circulating cooling water and corrosion and scale inhibitor, applied in the field of corrosion and scale inhibitor, can solve the problems of shutdown equipment, damage, numerous impurity ions, etc., and achieve good scale inhibition effect

Inactive Publication Date: 2013-04-24
天津科维津宏环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Reuse of reclaimed water has huge environmental and economic benefits, and is an advanced technology that is purely green and environmentally friendly. However, due to the complex sources of wastewater discharged by enterprises and different treatment processes, the quality of treated water varies and is poor. Its own characteristics have a very bad impact on the circulating water system. A little carelessness will seriously affect the treatment effect of the circulating water, and then seriously affect the operation of the production system, resulting in production stoppage or equipment damage, which seriously restricts the recycling of reclaimed water. Scope of application and usage
[0003] Corrosion and scale inhibitors in the industry cannot solve the problems of unstable water quality and numerous impurity ions in the process of treating industrial wastewater into reclaimed water, and cannot effectively control the trace substances in the circulating water system, such as phosphate, calcium and magnesium. Severe scaling and corrosion caused by ions, alkalinity, chloride ions, and various flora and algae

Method used

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  • Corrosion and scale inhibitor for reuse of reclaimed water from production wastewater as circulating cooling water

Examples

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Effect test

Embodiment 1

[0025] Corrosion and scale inhibitors for reclaimed water from production waste water used in circulating cooling water, composed of the following raw materials:

[0026] ATMP is 100kg; PBTC is 100kg; KW-923 is 460kg; copper corrosion inhibitor is 10kg; deionized water is 340kg, just mix the above raw materials evenly, and heat it properly when stirring, preferably below 50°C, after stirring evenly The discharge temperature should be below 40°C.

Embodiment 2

[0028] Corrosion and scale inhibitors for reclaimed water from production waste water used in circulating cooling water, composed of the following raw materials:

[0029] 60kg for ATMP; 60kg for HEDP; 300kg for KW-923; 0.5kg for copper corrosion inhibitor; 300kg for deionized water. Stir the above raw materials evenly. When stirring, you can heat it appropriately, preferably below 50°C, stir evenly The final discharge temperature should be below 40°C.

Embodiment 3

[0031] Corrosion and scale inhibitors for reclaimed water from production waste water used in circulating cooling water, composed of the following raw materials:

[0032] 120kg for ATMP; 120kg for hydrolyzed polymaleic anhydride; 490kg for KW-923; 13kg for copper corrosion inhibitor; 460kg for deionized water. Stir the above materials evenly, and heat them appropriately when stirring, preferably below 50°C , After stirring evenly, the discharge temperature should be below 40°C.

[0033] In the above three embodiments, the preparation method of KW-923 referred to comprises the following steps:

[0034] 1) Raw material preparation and dosing

[0035] a. Primer preparation and dosing: First, 300kg of deionized process water and 75kg of isopropanol are sucked into the reaction kettle through a vacuum pump in sequence, so that the liquid level in the reaction kettle is above the minimum liquid level of stirring, and then from the inlet of the reaction kettle Add 115kg maleic anhy...

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Abstract

The invention discloses a corrosion and scale inhibitor for the reuse of reclaimed water from production wastewater as circulating cooling water, which comprises the following raw materials by weight: an organic phosphonic acid corrosion and scale inhibitor, PBTC, KW-923, a copper corrosion inhibitor, and deionized production water; the corrosion and scale inhibitor is based on the high-efficientdispersant of KW-923, and is combined with other components such as organic phosphonic acid and copper corrosion inhibitors; through the adsorption and chelation with inorganic scaling microcrystals such as calcium carbonate and calcium phosphate, and organic microparticles in water, the invention can effectively prevent calcium carbonate and calcium phosphate crystals and organic particles from scaling, effectively reduce the corrosion rates of carbon steel and copper, and has good effect of scale inhibition and corrosion inhibition.

Description

technical field [0001] The invention belongs to the technical field of corrosion and scale inhibitors, in particular to a corrosion and scale inhibitor for reclaiming reclaimed water from production waste water for circulating cooling water. Background technique [0002] Reuse of reclaimed water has huge environmental and economic benefits, and is an advanced technology that is purely green and environmentally friendly. However, due to the complex sources of wastewater discharged by enterprises and different treatment processes, the quality of treated water varies and is poor. Its own characteristics have a very bad impact on the circulating water system. A little carelessness will seriously affect the treatment effect of the circulating water, and then seriously affect the operation of the production system, resulting in production stoppage or equipment damage, which seriously restricts the recycling of reclaimed water. Scope of application and usage. [0003] Corrosion an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/14
Inventor 李光海吕萍窦泽权
Owner 天津科维津宏环保科技有限公司
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