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

Special lithium bromide solution for adsorption refrigerator and preparation method thereof

An absorption refrigerator and lithium bromide technology, applied in chemical instruments and methods, heat exchange materials, etc., can solve problems such as peeling off shells, poor adhesion between oxide film and base layer, poor heat resistance stability of corrosion inhibitors, etc. , to achieve the effects of not easy to deteriorate, outstanding passivation characteristics, and good corrosion resistance

Inactive Publication Date: 2014-01-15
昆山市周市溴化锂溶液厂
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a special lithium bromide solution for absorption refrigerators, which solves the problem of poor thermal stability of corrosion inhibitors in the lithium bromide solution special for absorption refrigerators in the prior art, and unsatisfactory adhesion between the oxide film and the base layer. Defects such as peeling and shelling are prone to occur

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
  • Special lithium bromide solution for adsorption refrigerator and preparation method thereof
  • Special lithium bromide solution for adsorption refrigerator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Dissolve 4g of hydrobromic acid in 50g of deionized water to make a hydrobromic acid solution; use 25g, 22g, 7g, and 5g of the above-mentioned hydrobromic acid solution with 15g of lithium molybdate, 10g of lithium tungstate, and manganese nitrate 1g and 1g of lithium dihydrogen phosphate are mixed until dissolved to prepare lithium molybdate solution, lithium tungstate solution and lithium dihydrogen phosphate solution respectively;

[0022] (2) Add lithium tungstate solution into the reaction kettle, heat to 40°C, add lithium dihydrogen phosphate solution dropwise while stirring, mix well, and keep warm for 60 minutes;

[0023] (3) After completing step (2), add the remaining manganese nitrate solution dropwise while stirring, then add dilute nitric acid to adjust the pH value of the solution to 1-2; continue stirring for 15 minutes, add lithium molybdate solution dropwise, and stir for 60 minutes ;

[0024] (4) Place it for more than 24 hours, adjust the pH to 8...

Embodiment 2

[0028] (1) Dissolve 8g of hydrobromic acid in 60g of deionized water to make a hydrobromic acid solution; use 25g, 38g, 3g, and 2g of the above-mentioned hydrobromic acid solution with 20g of lithium molybdate, 30g of lithium tungstate, and 1g of nitric acid respectively Manganese and 2g lithium dihydrogen phosphate are mixed until dissolved, as lithium molybdate solution, lithium tungstate solution, manganese nitrate solution and lithium dihydrogen phosphate solution;

[0029] (2) Add lithium tungstate solution to the reaction kettle, heat to 60°C, add lithium dihydrogen phosphate solution dropwise while stirring, mix well, and keep warm for 75 minutes;

[0030] (3) After completing step (2), add the remaining manganese nitrate solution dropwise while stirring, then add dilute nitric acid to adjust the pH value of the solution to 1-2; continue stirring for 30 minutes, add lithium molybdate solution dropwise, and stir for 75 minutes ;

[0031] (4) Place it for more than 24 ho...

Embodiment 3

[0035] (1) Dissolve 15g of hydrobromic acid in 80g of deionized water to make a hydrobromic acid solution; use 45g, 30g, 10g, and 10g of the above-mentioned hydrobromic acid solution with 35g of lithium molybdate, 20g of lithium tungstate, and 3g of nitric acid respectively Manganese and 5g lithium dihydrogen phosphate are mixed until dissolved, as lithium molybdate solution, lithium tungstate solution, manganese nitrate solution and lithium dihydrogen phosphate solution;

[0036] (2) Add lithium tungstate solution to the reaction kettle, heat to 80°C, add lithium dihydrogen phosphate solution dropwise while stirring, mix well, and keep warm for 90 minutes;

[0037] (3) After completing step (2), add the remaining manganese nitrate solution dropwise while stirring, then add dilute nitric acid to adjust the pH value of the solution to 1-2; continue stirring for 45 minutes, add lithium molybdate solution dropwise, and stir for 90 minutes ;

[0038] (4) Place it for more than 24...

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 belongs to the technical field of air conditioning refrigeration and particularly relates to a special lithium bromide solution for an adsorption refrigerator and a preparation method thereof. The special lithium bromide solution for the adsorption refrigerator comprises a corrosion inhibitor which accounts for 1 to 3.5 percent of the total mass of the lithium bromide solution. The corrosion inhibitor comprises the following raw material components in parts by mass: 15 to 35 parts of lithium molybdate, 10 to 50 parts of lithium tungstate, 1 to 5 parts of lithium dihydrogen phosphate, 4 to 15 parts of hydrobromic acid, 0.5 to 2 parts of zinc dihydrogen phosphate and 0.5 to 2 parts of manganous nitrate. The special lithium bromide solution for the adsorption refrigerator is excellent in combination of a passive film layer and an inner cavity material, has more excellent corrosion resistance and good temperature resistance and stability.

Description

technical field [0001] The invention belongs to the technical field of air-conditioning and refrigeration, and in particular relates to a special lithium bromide solution for absorption refrigerators and a preparation method thereof. Background technique [0002] The lithium bromide absorption refrigerator uses lithium bromide solution as the absorbent and water as the refrigerant, and uses water to evaporate and absorb heat under high vacuum to achieve the purpose of refrigeration. In order to make the refrigeration process go on continuously, the evaporated refrigerant water vapor is absorbed by the lithium bromide solution, and the solution becomes thinner. This process occurs in the absorber, and then the solution is heated to make it The water separates and the solution becomes thicker, this process takes place in the generator. The steam obtained in the generator is condensed into water in the condenser, and then sent to the evaporator for evaporation after throttling...

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): C09K5/04
Inventor 吴冬琪
Owner 昆山市周市溴化锂溶液厂
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