A scale inhibitor and dispersant for seawater desalination

Abstract

The invention provides a scale inhibition and dispersion agent used for sea water desalination. The scale inhibition and dispersion agent has the advantages of being low in cost, good in thermal stability, good in scale inhibition effect and the like. The scale inhibition and dispersion agent is prepared from the following components in percentage by weight: 5%-9% of poly-carboxylic acid compounds, 25%-60% of poly-sulfonic acid compounds and water. Preferably, the scale inhibition and dispersion agent further comprises 0-25% of organic phosphine compounds.

Description

technical field

[0001] The invention relates to a scale-inhibiting dispersant, in particular to a scale-inhibiting dispersant for seawater desalination. Background technique

[0002] Water is a basic natural resource necessary for life, and it is an irreplaceable important resource. The total amount of water resources on the earth is about 1.38 billion cubic kilometers, 97.5% of which are seawater, and fresh water only accounts for 2.5%. The total freshwater resources in my country are about 2.8 trillion cubic meters, accounting for 6% of global water resources. , second only to Brazil, Russia and Canada, ranking fourth in the world. my country is a country with severe drought and water shortage. The per capita water resources are only about 2100 cubic meters, which is only 1 / 4 of the world average level. It is one of the countries with the poorest per capita water resources in the world. Therefore, vigorously developing and utilizing seawater resources and developing seawa...

Examples

Embodiment 1

[0041] The proportion of each component in the antiscalant dispersant is as follows:

[0042]

Embodiment 2

[0044] The proportion of each component in the antiscalant dispersant is as follows:

[0045] Itaconic acid-sodium styrene sulfonate-methacrylic acid copolymer (PIA-SSANa-MA) 60%

[0046] Polyitaconic acid (PIA) 5%

[0047] Deionized water 35%

Embodiment 3

[0049] The proportion of each component in the antiscalant dispersant is as follows:

[0050]

technical field

[0001] The invention relates to a scale-inhibiting dispersant, in particular to a scale-inhibiting dispersant for seawater desalination. Background technique

[0002] Water is a basic natural resource necessary for life, and it is an irreplaceable important resource. The total amount of water resources on the earth is about 1.38 billion cubic kilometers, 97.5% of which are seawater, and fresh water only accounts for 2.5%. The total freshwater resources in my country are about 2.8 trillion cubic meters, accounting for 6% of global water resources. , second only to Brazil, Russia and Canada, ranking fourth in the world. my country is a country with severe drought and water shortage. The per capita water resources are only about 2100 cubic meters, which is only 1 / 4 of the world average level. It is one of the countries with the poorest per capita water resources in the world. Therefore, vigorously developing and utilizing seawater resources and developing seawa...

Examples

Embodiment 1

[0041] The proportion of each component in the antiscalant dispersant is as follows:

[0042]

Embodiment 2

[0044] The proportion of each component in the antiscalant dispersant is as follows:

[0045] Itaconic acid-sodium styrene sulfonate-methacrylic acid copolymer (PIA-SSANa-MA) 60%

[0046] Polyitaconic acid (PIA) 5%

[0047] Deionized water 35%

Embodiment 3

[0049] The proportion of each component in the antiscalant dispersant is as follows:

[0050]

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