Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Corrosion-resistant and scale-inhibiting cleaning agent for medium-high pressure boiler and preparation method of corrosion-resistant and scale-inhibiting cleaning agent

A medium-high pressure, cleaning agent technology, applied in the preparation of detergent mixture composition, detergent composition, detergent compounding agent, etc., can solve the problem of no cleaning and dissolution effect of scaling, no steam pipeline corrosion and deposition control, Heat wastage and other issues

Active Publication Date: 2021-09-14
安徽省复和利泰节能环保科技有限公司
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the chemical treatment for medium and high pressure boiler water vapor circulation process adopts the chemical treatment scheme of inorganic ammonia water and inorganic phosphate. This chemical treatment method is to generate soft scale by reacting with calcium and magnesium scale-forming ions, and then remove it through sewage discharge. To achieve scaling control, although it can control hardness ion scaling to a certain extent, the control effect on other water slag deposits is limited, and there is no cleaning and dissolving effect on the formed scaling. Frequent blowdown can realize the elimination of water slag, resulting in a large waste of heat
This kind of solution often needs to shut down the boiler for cleaning when dealing with the fouling in the boiler caused by long-term operation. However, the time cost and cost of shutting down for cleaning are quite high, which seriously reduces the efficiency and profit of the boiler.
In addition, traditional chemical treatment solutions do not have the ability to control corrosion and deposition of steam pipelines

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Corrosion-resistant and scale-inhibiting cleaning agent for medium-high pressure boiler and preparation method of corrosion-resistant and scale-inhibiting cleaning agent
  • Corrosion-resistant and scale-inhibiting cleaning agent for medium-high pressure boiler and preparation method of corrosion-resistant and scale-inhibiting cleaning agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A medium and high pressure boiler anti-corrosion and scale-inhibiting cleaning agent, the preparation method comprising the following steps:

[0030] Step S1: Put 1% polyaspartic acid into a clean and dry reactor, add deionized water and heat up to 50-60°C to dissolve, and keep the temperature of the reactor;

[0031] Step S2: Add 0.5% polyol phosphate into the reactor, then add 1% sodium humate dropwise into the reactor, stir and keep warm for 1-2 hours;

[0032] Step S3: Dissolve tallow amine and triethylenediamine in a small amount of deionized water at room temperature at a mass ratio of 1:1 to make an organic corrosion inhibitor base liquid, and then add 5% diethylhydroxylamine and 5% organic corrosion inhibitor base solution, stir and heat up to 70-80°C, keep warm for 2-3 hours;

[0033] Step S4: Add 0.5% polyoxyethylene polyoxypropylene glyceryl ether into the reaction kettle, pressurize after stirring, release the pressure after 1-2 hours and cool naturally to ...

Embodiment 2

[0035] A medium and high pressure boiler anti-corrosion and scale-inhibiting cleaning agent, the preparation method comprising the following steps:

[0036] Step S1: Put 1% polyaspartic acid into a clean and dry reactor, add deionized water and heat up to 50-60°C to dissolve, and keep the temperature of the reactor;

[0037] Step S2: Add 0.1% polyol phosphate into the reactor, then add 1% sodium humate dropwise into the reactor, stir and keep warm for 1-2 hours;

[0038] Step S3: Dissolve tallow amine and triethylenediamine in a small amount of deionized water at room temperature at a mass ratio of 1:1 to make an organic corrosion inhibitor base liquid, and then add 10% diethylhydroxylamine and 12% organic corrosion inhibitor base solution, stir and heat up to 70-80°C, keep warm for 2-3 hours;

[0039] Step S4: Add 0.5% polyoxyethylene polyoxypropylene glyceryl ether into the reaction kettle, pressurize after stirring, release the pressure after 1-2 hours and cool naturally t...

Embodiment 3

[0041] A medium and high pressure boiler anti-corrosion and scale-inhibiting cleaning agent, the preparation method comprising the following steps:

[0042] Step S1: Put 1% polyaspartic acid into a clean and dry reactor, add deionized water and heat up to 50-60°C to dissolve, and keep the temperature of the reactor;

[0043] Step S2: Add 0.1% polyol phosphate into the reactor, then add 1% sodium humate dropwise into the reactor, stir and keep warm for 1-2 hours;

[0044] Step S3: Dissolve tallow amine and triethylenediamine in a small amount of deionized water at room temperature at a mass ratio of 1:1 to make an organic corrosion inhibitor base liquid, and then add 15% diethylhydroxylamine and 18% organic corrosion inhibitor base solution, stir and heat up to 70-80°C, keep warm for 2-3 hours;

[0045] Step S4: Add 0.5% polyoxyethylene polyoxypropylene glyceryl ether into the reaction kettle, pressurize after stirring, release the pressure after 1-2 hours and cool naturally 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

PropertyMeasurementUnit
Corrosion rateaaaaaaaaaa
Login to View More

Abstract

The invention discloses a corrosion-resistant and scale-inhibiting cleaning agent for a medium-high pressure boiler and a preparation method of the corrosion-resistant and scale-inhibiting cleaning agent, and belongs to the technical field of boiler cleaning and scale inhibition. The corrosion-resistant and scale-inhibiting cleaning agent comprises the following components in percentage by mass: 0.01%-5% of organic phosphate, 0.1%-10% of a dispersing agent, 0.1%-3% of a chelating agent, 1%-20% of an organic corrosion inhibitor, 1%-20% of diethyl hydroxylamine, 0.01%-2% of a defoaming agent, and the balance of deionized water. When acting on boiler water, the corrosion-resistant and scale-inhibiting cleaning agent for the medium-high pressure boiler can disperse and thin formed pipe wall sediments such as metal oxide, silicon scale and calcium scale, realizes descaling on the water side of the boiler without shutdown, cleans the metal surface to recover the optimal efficiency of heat conduction, improves the heat efficiency of the boiler, and also has the effects of long-acting scale inhibition, boiler water vapor quality improvement and boiler pollution discharge reduction; and when acting on feed water, the corrosion-resistant and scale-inhibiting cleaning agent can eliminate the acid gas, feed water dissolved oxygen can be removed, and a layer of organic monomolecular protective film is attached to the inner wall of the pipeline to inhibit corrosion of the pipeline.

Description

technical field [0001] The invention relates to the technical field of cleaning and scaling of boilers, in particular to an anti-corrosion and scaling cleaning agent for medium and high pressure boilers and a preparation method thereof. Background technique [0002] Boilers with a rated pressure of 2.9-10.8MPa are called medium and high-pressure boilers. This type of boiler is widely used in high-energy-consuming enterprises such as thermal power, petrochemical, chemical, and steel. As a kind of evaporator, the boiler water is in the process of continuous concentration during the process of producing steam. With the continuous operation, the hardness, silicon salt, iron filings and other scaling factors entrained in the water will inevitably gather and deposit, forming a scaling trend. Once the scaling is formed, it will not only greatly affect the heat transfer efficiency of the boiler, but also cause corrosion and perforation under the scale, or even a tube burst accident....

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
IPC IPC(8): C11D1/72C11D3/37C11D3/36C11D3/30C11D3/33C11D3/60C02F5/14C23F11/14
CPCC11D1/722C11D3/3719C11D3/362C11D3/30C11D3/33C11D3/364C02F5/14C23F11/141C11D2111/20
Inventor 顾万华彭馥频
Owner 安徽省复和利泰节能环保科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com