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Biogas generating pit sealing paint and preparation method thereof

A technology for sealing coatings and biogas tanks, applied in coatings and other directions, can solve problems such as affecting the development of biogas, sealing is not resistant to corrosion, etc., and achieve the effect of shortening construction time and improving sealing performance

Active Publication Date: 2013-01-30
GUANGXI FORESTRY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country started to develop biogas from the 1930s to the end of the 1970s, and experienced three ups and downs. One of the main reasons is that it is sealed and not resistant to corrosion. "gas pool" is "good for one year, leaks for two years, unusable for three years and four years", which seriously affects the development of biogas

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1, according to the provisions of NY / T 860-2004 Household Digester Sealing Coating, the operation examples are as follows:

[0012] (1) After foaming 100kg polyvinyl alcohol with 584kg water at room temperature for 4 hours, put it into the reactor and spray steam (steam produced by ordinary steam boiler) in the coil to heat and stir for 2 hours, and the pressure is controlled Within 0.25Mp.

[0013] (2) Soak 4kg of hydroxypropyl methylcellulose in 6kg of warm water at 60°C for 1.2 hours.

[0014] (3) Put the soaked hydroxypropyl methylcellulose into the reactor and mix it well with polyvinyl alcohol, heat the steam and stir for 1.2 hours, and control the pressure within 0.25Mp.

[0015] (4) Soak 2kg of dispersible rubber powder in 4kg of warm water at 60°C to make a paste.

[0016] (5) After mixing the above materials and taking them out of the oven for 12 hours, add 0.1kg of chlorine dioxide disinfectant and 1kg of acid toner (acid iron red toner) to adjus...

Embodiment 2

[0017] Embodiment 2, according to the provisions of NY / T 860-2004 Household Digester Sealing Coating, the operation example is as follows:

[0018] (1) After foaming 100kg polyvinyl alcohol with 610kg water at room temperature for 4 hours, put it into the reactor and spray steam (steam produced by ordinary steam boiler) in the coil to heat and stir for 2 hours, the pressure is controlled Within 0.25Mp.

[0019] (2) Soak 4.2kg of hydroxypropyl methylcellulose in 6.3kg of warm water at 60°C for 1.5 hours.

[0020] (3) Put the soaked hydroxypropyl methylcellulose into the reactor and mix it well with polyvinyl alcohol, heat the steam and stir for 1.5 hours, and control the pressure within 0.25Mp.

[0021] (4) Soak 2.1kg of dispersible rubber powder with 4.2kg of warm water at 60°C to make a paste.

[0022] (5) Mix the above materials and take them out of the oven for use.

Embodiment 3

[0023] Embodiment 3, according to the provisions of NY / T 860-2004 Household Digester Sealing Paint, the operation example is as follows:

[0024] (1) After foaming 100kg polyvinyl alcohol with 555kg water at room temperature for 4 hours, put it into the reactor and spray steam (steam produced by ordinary steam boiler) in the coil to heat and stir for 2 hours, and the pressure is controlled Within 0.25Mp.

[0025] (2) Soak 3.8kg of hydroxypropyl methylcellulose in 5.7kg of warm water at 60°C for 1 hour.

[0026] (3) Put the soaked hydroxypropyl methylcellulose into the reactor and mix it well with polyvinyl alcohol, heat the steam and stir for 1 hour, and control the pressure within 0.25Mp.

[0027] (4) Soak 1.9kg of dispersible rubber powder with 3.8kg of warm water at 60°C to make a paste.

[0028] (5) After mixing the above materials and taking them out of the oven for 12 hours, add 0.1kg of chlorine dioxide disinfectant and 1kg of acid toner (acid iron red toner) to adjus...

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PUM

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Abstract

The invention discloses a biogas generating pit sealing paint. The biogas generating pit sealing paint is prepared by mixing polyvinyl alcohol, hydroxyl-propyl-methyl cellulose, dispersible rubber powder and hydrosolvent in a weight part ratio of the polyvinyl alcohol to the hydroxyl-propyl-methyl cellulose to the dispersible rubber powder to the hydrosolvent of 1:(0.04+ / -0.002):(0.02+ / -0.001):(5.94+ / -0.3). The biogas generating pit sealing paint accords with the national standard, and has the following two important properties: (1) the impermeability is less than or equal to 2.50 percent; and (2) the drying time (actual drying time) is less than or equal to 8.2 hours. When the biogas generating pit sealing paint is applied to construction of a biogas generating pit, the sealing performance of the biogas generating pit can be effectively improved, and the construction time can be shortened.

Description

technical field [0001] The invention relates to the technical field of biogas engineering construction, in particular to a biogas pond sealing coating for biogas pond construction and a preparation method thereof. Background technique [0002] The quality of biogas digesters is an important guarantee for the healthy development of biogas, and the sealing coating of biogas digesters is an essential and important material to ensure the quality of biogas digesters. From the beginning of the 1930s to the end of the 1970s, my country experienced three ups and downs in the development of biogas. One of the main reasons is that it is sealed and not resistant to corrosion. "Gas pool" is "good for one year, leaks for two years, and unusable for three years and four years", which seriously affects the development of biogas. There are mainly two types of biogas tank sealing coatings currently used: one is cement-blended coating (Type I coating), that is, the coating and cement need to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D129/04C09D101/26C09D7/12
Inventor 李金怀马奎秦文弟徐铁纯甘福丁李勇江
Owner GUANGXI FORESTRY RES INST