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Antiscaling alloy

An alloy and anti-scaling technology, applied in the field of anti-scaling, can solve the problems of ineffective softening, time-consuming and labor-intensive efficiency of descaling, decrease in thermal efficiency, etc., so as to solve the problem of extra energy consumption or pollutant discharge, low price, and forming a trend reduced effect

Inactive Publication Date: 2009-09-23
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Where there is water, there is scale. From boilers to pipelines and valves, the formation of scale will cause a decrease in thermal efficiency, increase energy consumption, blockage of pipelines and failure of valves, so descaling operations must be carried out frequently
[0004] Descaling is a time consuming and inefficient operation
The use of softened water is an effective means of anti-scaling, but under the condition of a huge amount of water and the addition of various chemical substances during use, effective softening cannot be carried out at all; traditional methods of anti-scaling and descaling include the use of magnetic materials, mechanical descaling Dirt and chemical cleaning, but the effect is not ideal
Commonly used chemical cleaning methods, not only to stop boiler heating, but also environmental problems caused by emissions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of antifouling alloy, alloy composition is as shown in table 1 by weight percentage;

[0032] Table 1

[0033] C

Si

Ni

Cu

Zn

Ti

V

Cr

mn

Re

sn

Fe

0.07

0.56

23.2

41.2

14.1

4.0

0.5

4.4

3.5

0.1

0.8

margin

[0034] The anti-scaling alloy is applied to the heating furnace manifold of a water system, and samples are taken at the inlet and outlet respectively, with a flow rate of 5000m 3 / sky.

[0035] The anti-scaling alloy is specifically used in a powder state and packed in a special tank. Due to the huge surface area of ​​the powder, when water flows through the tank, it has sufficient contact with the powdered anti-scaling alloy. Through the electrochemical effect between the powdered anti-scaling alloy and water, the anti-scaling alloy releases a large number of electrons to improve the solubility of the scaling ions in the wa...

Embodiment 2

[0040] A kind of antifouling alloy, alloy composition is as shown in table 3 by weight percentage:

[0041] table 3

[0042] C

Si

Ni

Cu

Zn

Ti

V

Cr

mn

Re

sn

Fe

0.06

0.7

14.2

33.1

15.1

3.1

0.3

7.4

5.5

0.3

0.6

margin

[0043] Unlike Example 1, the antifouling alloy was used in a porous form, not in a powder state. The anti-scaling device is a tank body equipped with alloy porous blades. During use, the blades rotate and fully contact with the liquid flowing through the tank body. The alloy anti-scaling device is installed on the water system heating furnace header. Through the electrochemical effect between the alloy and water, the alloy releases a large number of electrons to improve the solubility of scale-forming ions in water.

[0044] The test data are shown in Table 4: Due to the electrostatic catalysis of the alloy, despite the large...

Embodiment 3

[0048] An anti-fouling alloy, its main characteristics are as follows:

[0049] 1) a kind of antifouling alloy, its concrete composition and the weight percent of each composition are specifically as follows:

[0050] Ni: 16%, Cu: 30%, Zn: 15%, Ti: 5%, V: 0.4%, Cr: 6%, Mn: 4%, B: 0.1%, four of La, Ce, Pr, Nd One or its combination: 0.3%, Sn: 0.2%, C≤0.10%, Si: 0.5%, Fe: balance.

[0051]2) The specific form of the anti-fouling alloy is one of the following or a combination thereof: powder, granular, spherical, porous plate, layered sprayed on the surface of other materials. The particle size of powder is required to be about 0.9-20mm; the particle size of granular is required to be about 1.5mm, and the particle size of spherical shape is required to be about 8mm.

[0052] When the use state of the anti-fouling alloy is mainly powder, the outlet or / and inlet of the anti-fouling device for containing the anti-fouling alloy is equipped with a filter screen. The pore size of th...

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Abstract

The invention provides an antiscaling alloy, which is characterized by comprising the following compositions by weight percentage: 7 to 25 percent of Ni, 15 to 45 percent of Cu, 6 to 20 percent of Zn, 3 to 8 percent of Ti, 0.1 to 0.6 percent of V, 2 to 10 percent of Cr, 1 to 6 percent of Mn and the balance of Fe. In the using process, the antiscaling alloy only has the catalyzing function, and is not consumed, so the antiscaling alloy can be used for a long time, and has convenient use and low price; and the antiscaling alloy has the advantages of antiscaling, high efficiency, environmental protection and the like, and has foreseeable enormous economic and social values.

Description

Technical field: [0001] The invention relates to material science and anti-scaling technology of liquid holding or conveying systems, and in particular provides an anti-scaling alloy which can be used for anti-scaling of pipelines, valves and boilers of liquid systems. Background technique: [0002] In the prior art, in many cases, we need to perform anti-scaling treatment on the containers or pipelines holding or transporting water or other substances. [0003] For example, in oil extraction, in order to exploit the oil reservoir as much as possible, we have adopted many physical and chemical means. Most of the methods are almost related to water, including refilling the ground with water, injecting hot water, injecting water containing various chemicals, and so on. In fact, the oil extracted from many oil fields has a water content of more than 50%, or even 95%, so oil-water separation and water recycling must be carried out. Therefore, water treatment is an important pa...

Claims

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Application Information

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IPC IPC(8): C22C38/58C22C38/50C22C38/54C22C30/00
Inventor 董加胜吕曼祺陈德敏张海峰杨柯
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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