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

Gas mixture substituting for MAPP gas

A technology of gas mixtures and mixtures, applied in the direction of gas fuel, petroleum industry, fuel, etc., can solve the problems of unrealistic industrial production, achieve the effects of easy portability, wide sources, and reduced production costs

Active Publication Date: 2011-03-23
NINGBO KOMANS REFRIGERATION IND
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Foreign MAPP gas is a mixture of propyne, propadiene and part of liquefied petroleum gas. The first two components are very rare in my country. They are only used in laboratories, and industrial production is not realistic enough.

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

Embodiment 1

[0017] The liquefied gas that replaces MAPP can be obtained by mixing three liquefied gases of propane, propylene and dimethyl ether in a mass ratio of 1:2:2. Without pure oxygen for combustion, its actual combustion temperature can reach 1358 degrees Celsius.

[0018] 1. Combustion performance test and tools:

[0019] 1) Thermometer accuracy: ±1°C. Measuring range: (0~100)℃.

[0020] 2) High-precision thermometer: 0.1°C (below 1000°C). 1°C (above 1000°C). Conditions of use: 0 ~ 50 ℃ cold junction temperature: automatic compensation.

[0021] 3) Pressure gauge: Accuracy 5psi, measurement range: (0~500)psi.

[0022] 4) Electronic balance precision: 0.1g.

[0023] 5) Stopwatch, welding torch, ignition equipment.

[0024] 6) Weigh the empty bottle, take its weight after filling it with the liquefied gas that replaces MAPP, and record relevant data (see Table 1).

[0025] Table 1

[0026] Tare (g)

[0027] Test during combustion: torch weight: 377g;

[0028] U...

Embodiment 2

[0037] Mix the three liquefied gases of propane, propylene and dimethyl ether in a mass ratio of 1:2.36:2, that is, the ratio of propane to dimethyl ether remains unchanged, and the content of propylene is adjusted to account for 44% of the total components, which can replace MAPP gas gas mixture. Without pure oxygen for combustion, its actual combustion temperature can reach above 1350 degrees Celsius.

Embodiment 3

[0039] Mix the three liquefied gases of propane, propylene and dimethyl ether at a mass ratio of 1:1.69:2, that is, the ratio of propane to dimethyl ether remains unchanged, and the content of propylene is adjusted to account for 36% of the total components, which can replace MAPP gas gas mixture. Without pure oxygen for combustion, its actual combustion temperature can reach above 1350 degrees Celsius.

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
melting pointaaaaaaaaaa
boiling pointaaaaaaaaaa
flash pointaaaaaaaaaa
Login to View More

Abstract

The invention relates to an MAPP gas which is formed by mixing propane, propylene and dimethyl ether according to a certain proportion, wherein, the propane takes up 18 to 22 percent of the total components, the propylene takes up 36 to 44 percent of the total components, and the dimethyl ether takes up 36 to 44 percent of the total components. By using special welding sets and packing containers, the actual combustion temperature of the MAPP gas can reach above 1350 DEG C (in general, the actual combustion temperature of liquid gas is 600 to 800 degrees) in the situation that no pure oxygen is used for supporting combustion. The MAPP gas of the invention has wide and stable source of raw materials, low price, higher security, easy carrying, and no phenomena such as black smoke and tempering, etc. in the combustion process, and is a solder brazing gas which can be directly used for brazing without the help of oxygen.

Description

(1) Technical field [0001] The invention relates to an industrial welding and cutting gas, which is especially suitable for gas flame brazing. (2) Background technology [0002] MAPP gas is a special gas mixture for brazing and brazing. Foreign MAPP gas is a mixture of propyne, propadiene and part of liquefied gas. The first two components are very rare in my country and can only be used in laboratories. Industrial production is not realistic enough. Therefore, it is necessary to find a new gas mixture with wide sources and low cost to replace the MAPP gas whose main components are propyne and propadiene. (3) Contents of the invention [0003] The object of the present invention is to provide a gas mixture which is high in safety, stable in flame temperature and low in cost and is suitable for various brazing occasions to replace MAPP gas. [0004] The technical scheme adopted in the present invention is: [0005] A gas mixture replacing MAPP gas is formed by mixing pro...

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 Patents(China)
IPC IPC(8): C10L3/00
Inventor 沈金娥
Owner NINGBO KOMANS REFRIGERATION IND
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