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Method for preparing antiseptic agent

A preservative and piping technology, applied in chemical instruments and methods, lighting and heating equipment, components of steam boilers, etc., can solve problems such as water level control failures

Inactive Publication Date: 2002-10-02
MIURA COMPANY LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, in the case of using a coating-type preservative, there is an example where a coating is formed on the water level electrode (omitted in the figure) that controls the water level in the boiler 21 described above, causing a malfunction in the water level control.

Method used

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  • Method for preparing antiseptic agent
  • Method for preparing antiseptic agent
  • Method for preparing antiseptic agent

Examples

Experimental program
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Embodiment

[0027] Hereinafter, specific examples of the present invention will be described. figure 1 It is an explanatory diagram schematically showing the structure of the first embodiment of the present invention. In addition, this is only an illustration and does not limit the scope of the present invention.

[0028] first, figure 1 Among them, the boiler 1 and the load equipment 2 are connected together through the steam pipe 3, and the load equipment 2 and the water supply tank 4 are connected together through the return water pipeline 5, and the lower part of the above water supply tank 4 and the above boiler 1 is connected by a water supply pump 6. The water supply pipes 7 are connected together. And in the said water supply tank 4, the supplementary water supplied from the raw water piping 8 and the return water supplied from the said return water piping 5 are mixed. Further, a steam trap 9 is provided on the return water pipe 5, and the steam and water are separated by the...

no. 1 example

[0034] Soft water is supplied to a small once-through boiler with an evaporation rate of 500kg / h at a pressure of 8kg / cm 2 It operates while continuously generating steam. Then, as a preservative, add 100 mg / liter (per liter of water supply) of 2-amino-2-methylpropanol to the steam piping (add 100 mg of preservative to the steam piping per liter of water supply) . At this time, the sample (mild steel 50 mm x 25 mm x 1 mm) was immersed in backwater, and the corrosion rate (mdd) was measured for 48 hours. The results are shown in Table 1. Here, the water used for the water supply is water softened from tap water in Matsuyama City, Aimei Prefecture. Furthermore, the water quality thereof is pH: 8.1, electrical conductivity: 250 μs / cm. M Alkalinity: 50mgCaCO 3 / Lift.

no. 2 example

[0036] Soft water is supplied to a small once-through boiler with an evaporation rate of 500kg / h at a pressure of 8kg / cm 2 It operates while continuously generating steam. Then, as a preservative, 100 mg / liter (per liter of water supply) of 2-amino-2-methylpropanol (100 mg per liter of water supply) was added to the steam trap preservatives). At this time, the sample (mild steel 50 mm x 25 mm x 1 mm) was immersed in backwater, and the corrosion rate (mdd) was measured for 48 hours. The results are shown in Table 1. Here, the water used for the water supply is water softened from tap water in Matsuyama City, Aimei Prefecture. Furthermore, the water quality thereof is pH: 8.1, electrical conductivity: 250 μs / cm. M Alkalinity: 50mgCaCO 3 / Lift.

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Abstract

A preservative filling method is provided, which can fill the preservative necessary for the anticorrosion of steam piping and / or return water piping without waste, and will not cause failure of water level control. In the boiler equipment equipped with return water piping 5, add anti-corrosion agent to steam piping 3 or return water piping 5.

Description

technical field [0001] The present invention relates to a filling method of an antiseptic for suppressing corrosion of steam pipes and / or return pipes of boiler equipment equipped with return pipes. Background technique [0002] Conventionally, there is a boiler facility that supplies steam from a boiler to load equipment, recovers the steam that has been heat-exchanged in the load equipment as return water, and reuses it for boiler water supply. Such boiler equipment as image 3 As shown, the steam supplied from the boiler 21 to the load equipment 23 through the steam pipe 22 performs heat exchange in the load equipment 23, and the return water after the heat exchange is in the water supply tank 25 through the return water pipe 24 and is supplied from the raw water pipe 26. Raw water is mixed, and water is supplied to the boiler 21 from the water supply pipe 27 . [0003] The steam pipe 22 and the return water pipe 24 in this boiler equipment may be affected by the lowerin...

Claims

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Application Information

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IPC IPC(8): F22B37/00C23F11/00C23F14/02F22B37/56F22D11/00
CPCC02F2303/08C23F11/00
Inventor 中岛纯一
Owner MIURA COMPANY LIMITED
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