Method for removing thick-layer limescale at bottom of boiler

A boiler bottom and scale technology, which is applied in the direction of boiler cleaning equipment, etc., can solve the problems of uneven heating, short descaling time, and affecting the heat transfer effect of the boiler, and achieve good scale inhibition performance, short descaling time, and good descaling The effect of the dirt effect

Inactive Publication Date: 2016-05-25
雷春生
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention: for the current scaling layer below 5mm, it can be completed by chemical treatment alone, but when the scaling reaches more than 5mm, it is difficult to complete the general chemical treatment, and thick scale not only affects the heat transfer of the boiler effect, and it will lead to the problem of uneven heating and explosion. A method for removing thick scale by using a combination of chemical and physical methods is provided. The present invention solidifies the prepared viscous liquid on the needle and inserts the needle into the scale. , and add soft water to heat, so that the solid on the needle melts and contacts with the interface to remove the scale, and prepares an antiscalant and smears it on the bottom of the pot after descaling for protection. The present invention combines chemical and physical methods. The scale also has a good descaling effect, and the descaling time is short, and the prepared scale inhibitor has good scale inhibition performance for protection, and is biodegradable and non-toxic

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0026] First weigh 5g of butter, 20g of tung oil, 15g of tea oil and 6g of glycerin in a 1000mL three-neck flask, stir it mechanically for 10 minutes to mix it well, then put the flask into a water bath at 55°C, and add 2g of diamino Diphenylmethane curing agent, continue to stir for 1 hour and then heat up to 70°C, then add 5g of shellac adhesive, stir at 600r / min for 10min, cool to room temperature after stirring, to obtain viscous liquid; pour the viscous liquid Put it into a tall beaker, take 30 needles with a length of 5 cm and a diameter of 2.5 mm and soak them in the viscous liquid, soak 3 needles at a time, take them out after soaking for 5 minutes, put the taken out needles into a petri dish, and then transfer Put it in a refrigerator at -10°C for solidification, take it out after 8 hours of solidification; add 10g of maleic anhydride and 40mL of distilled water into a 500mL three-neck flask, put the flask in a 50°C water bath, stir for 30min, then cool to room tempera...

example 2

[0029]First, weigh 6g of butter, 23g of tung oil, 17g of tea oil and 6.5g of glycerin in a 1000mL three-neck flask, mechanically stir for 15min to fully mix, then put the flask into a 60°C water bath, and add 2.5g of Diaminodiphenylmethane curing agent, continue to stir for 1.5h and then heat up to 75°C, then add 5.5g of shellac adhesive, stir for 13min at 650r / min, and cool to room temperature after stirring to obtain a viscous liquid; Pour the viscous liquid into a tall beaker, take 35 needles with a length of 5 cm and a diameter of 2.5 mm and soak them in the viscous liquid, soak 3 needles at a time, take them out after soaking for 6 minutes, and put the taken out needles into a petri dish After that, move it to a refrigerator at -8°C for solidification, take it out after 9 hours of solidification; add 11g of maleic anhydride and 50mL of distilled water into a 500mL three-neck flask, put the flask in a 55°C water bath, stir for 35min, and then cool to room temperature, then...

example 3

[0032] First, weigh 8g of butter, 25g of tung oil, 20g of tea oil and 7g of glycerin in a 1000mL three-neck flask, stir it mechanically for 20min to make it fully mixed, then put the flask into a water bath at 65°C, and add 3g of diamino Diphenylmethane curing agent, continue to stir for 2 hours and then heat up to 80°C, then add 6g of shellac adhesive, stir at 700r / min for 15min, cool to room temperature after stirring, to obtain viscous liquid; pour the viscous liquid Put 40 needles with a length of 5 cm and a diameter of 2.5 mm into the viscous liquid for soaking in a tall beaker, soak 4 needles at a time, take out after soaking for 7 minutes, put the taken out needles into a petri dish, and then transfer Put it in a refrigerator at -5°C for solidification, take it out after 10 hours of solidification; add 12g of maleic anhydride and 60mL of distilled water into a 500mL three-neck flask, put the flask in a 60°C water bath, stir for 40min, then cool to room temperature, and t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for removing thick-layer limescale at the bottom of a boiler, and belongs to the field of limescale removing. According to the method, a prepared viscous solution is cured on a needle, the needle is inserted into the limescale, soft water is added, and heating is conducted, so that a solid on the needle is melted and makes contact with an interface, and then the limescale is disengaged; a scale inhibitor is prepared, and the boiler bottom subjected to limescale removing is smeared with the scale inhibitor to be protected. According to the method for removing the thick-layer limescale at the bottom of the boiler, a chemical method is combined with a physical method, a good descaling effect on the limescale with large thickness is achieved, the descaling time is short, the good scale inhibition performance is achieved due to the fact that the prepared scale inhibitor is used for protection, biodegradability is achieved, and toxicity does not exist.

Description

technical field [0001] The invention discloses a method for removing thick-layer scale at the bottom of a boiler, belonging to the field of scale removal. Background technique [0002] Under the action of high-temperature circulation, boiler water is very easy to form dirt on the inner wall of the boiler and pipes (usually [0003] Often carbonates), a large number of practical experience and lessons show that with the continuous increase of the thickness of the dirt on the inner wall of boilers and pipelines, the dirt will inevitably have a negative impact on many parameters such as the flow rate of circulating water and heat conduction. Practical experience It shows that if the water is directly added to the boiler without treatment or treatment is not in place, scale will be formed on the heating surface of the boiler after high temperature operation, and it will gradually thicken as time goes by. Theoretical research shows that the thermal conductivity of scale is It is...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): F22B37/54
CPCF22B37/54
Inventor 雷春生王志慧
Owner 雷春生
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap