Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of high-efficiency composite corrosion inhibitor for coal or mineral powder transportation antifreeze

A compound corrosion inhibitor and antifreeze technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of high toxicity, pollution, environmental pollution, etc., and achieve the effect of low cost and simple preparation process

Inactive Publication Date: 2014-10-15
LANZHOU YINGWEINUO CHEM TECH
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are endless patents and documents related to antifreeze at home and abroad, and the main trend is the improvement of adding corrosion inhibitors; traditional antifreeze corrosion inhibitors, such as sodium chromate, sodium dichromate, sodium molybdate, sodium tungstate, etc. It is too toxic and will cause great pollution to the environment and is not suitable for continued use. These toxic and public hazard substances should be replaced by non-toxic or low-toxic corrosion inhibitors
Nitrite is used as the main corrosion inhibitor of ferrous metals. It has excellent corrosion inhibition effect under the working conditions of calcium chloride antifreeze, and adding sodium nitrite to calcium chloride solution will lower the freezing point, so it is used Widely used in antifreeze for coal or mineral powder transportation in winter; but nitrite has certain pollution to the environment, especially because of its carcinogenic effect, foreign countries have asked to stop using it

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
  • Preparation method of high-efficiency composite corrosion inhibitor for coal or mineral powder transportation antifreeze
  • Preparation method of high-efficiency composite corrosion inhibitor for coal or mineral powder transportation antifreeze
  • Preparation method of high-efficiency composite corrosion inhibitor for coal or mineral powder transportation antifreeze

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Preparation of antifreeze for coal or mineral powder transportation

[0020] Add 250g of anhydrous calcium chloride in a 1500mL three-necked flask with a mechanical stirring device, then add 550g of water, stir to make it dissolve; add 50g of urea in another 300mL three-necked flask of the same device, then add 100g of water, stir Make it dissolve; then add it to the calcium chloride solution, filter to remove the water-insoluble matter.

[0021] 2. Preparation of high-efficiency composite corrosion inhibitor for coal or mineral powder transportation antifreeze

[0022] (1) Add 3g of aminotrimethylene phosphonic acid, 1g of zinc sulfate, 0.5g of triethanolamine, 0.5g of sodium benzoate, and 0.5g of cinnamic acid into five 50mL three-necked flasks equipped with a mechanical stirring device, and then respectively Add 15g, 5g, 2.5g, 2.5g, 2.5g of water, stir to dissolve; obtain solutions of aminotrimethylene phosphonic acid, zinc sulfate, triethanolamine, sodium benzo...

Embodiment 2

[0028] 1. Preparation of antifreeze for coal or mineral powder transportation

[0029] Add 250g of anhydrous calcium chloride in a 1500mL three-necked flask with a mechanical stirring device, then add 550g of water, stir to make it dissolve; add 50g of urea in another 300mL three-necked flask of the same device, then add 100g of water, stir Make it dissolve; then add it to the calcium chloride solution, vacuum filter to remove the water-insoluble matter.

[0030] 2. Preparation of high-efficiency composite corrosion inhibitor for coal or mineral powder transportation antifreeze

[0031] (1) Add 3g of aminotrimethylene phosphonic acid, 1g of zinc sulfate, 0.5g of triethanolamine, 0.8g of sodium benzoate, and 0.8g of cinnamic acid into five 50mL three-necked flasks equipped with a mechanical stirring device, and then respectively Add 15g, 5g, 2.5g, 4g, 4g of water, stir to dissolve; respectively obtain amino trimethylene phosphonic acid, zinc sulfate, triethanolamine, sodium b...

Embodiment 3

[0037] 1. Preparation of antifreeze for coal or mineral powder transportation

[0038] Add 250g of anhydrous calcium chloride in a 1500mL three-necked flask with a mechanical stirring device, then add 550g of water, stir to make it dissolve; add 50g of urea in another 300mL three-necked flask of the same device, then add 100g of water, stir Make it dissolve; then add it to the calcium chloride solution, vacuum filter to remove the water-insoluble matter.

[0039] 2. Preparation of high-efficiency composite corrosion inhibitor for coal or mineral powder transportation antifreeze

[0040] (1) Add 3g of aminotrimethylene phosphonic acid, 1g of zinc sulfate, 0.5g of triethanolamine, 1g of sodium benzoate, and 1g of cinnamic acid into five 50mL three-neck flasks equipped with a mechanical stirring device, and then add 15g and 5g of , 2.5g, 5g, 5g of water, stir to dissolve; respectively obtain solutions of amino trimethylene phosphonic acid, zinc sulfate, triethanolamine, sodium ...

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 preparing a special high-efficiency composite corrosion inhibitor for coal or mineral powder transportation antifreeze. Anhydrous calcium chloride is dissolved in a three-necked flask to make it an aqueous solution, and the dissolved urea solution is added under stirring. Then add amino trimethylene phosphonic acid, zinc sulfate, triethanolamine, benzotriazole, sodium benzoate, cinnamic acid and other solutions in sequence under stirring. The present invention selects non-toxic anti-corrosion raw materials, makes them produce synergistic effects through scientific compounding, and achieves the minimum usage amount in the early stage of the same effect. This special high-efficiency composite corrosion inhibitor has a good anti-corrosion effect when added to the antifreeze liquid for coal or mineral powder transportation in winter, and the anti-corrosion effect on metal equipment meets the requirements of relevant standards and meets the requirements of the Ministry of Railways TB / T3208-2008 for bulk particle cargo transportation. Antifreeze technical conditions; and has the characteristics of simple preparation process, low production cost, non-flammable, non-toxic, odorless and tasteless.

Description

technical field [0001] The invention relates to the technical field of coal or mineral powder transportation, in particular to the development of a special high-efficiency composite corrosion inhibitor for coal or mineral powder transportation antifreeze. Background technique [0002] The moisture-containing coal and mineral powder transported in winter are easy to freeze in the vehicle, which brings great difficulties to winter transportation and unloading, and also causes huge economic losses to users such as railways, coal mines, ports or mineral powder and coal, seriously affecting vehicles. Turnover and transportation efficiency; therefore, in recent years, when transporting coal and mineral powder and other goods in winter, a large number of winter coal or mineral powder transportation antifreeze are used to prevent them from freezing in the vehicle and solve the difficulties in the transportation of water-containing coal and mineral powder and other goods . The meth...

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): C09K3/18
Inventor 石辉文苏玲
Owner LANZHOU YINGWEINUO CHEM TECH