Sulfur-content-free odor additive for combustible gas, and preparation method thereof

A technology of sulfur content and additives, applied in gas fuel, gas/liquid distribution and storage, fuel and other directions, can solve the problems of deviation, self-polymerization, short shelf life, etc., and achieve sufficient supply, simple production process, and adsorption. small effect

Pending Publication Date: 2022-01-21
沈阳光正工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Sulfur-free odorant, in addition to the above advantages, compared with the traditional tetrahydrothiophene odorant, should also have the following improved performance, such as the taste type deviates from the unique smell of artificial gas, and will Self-polymerization occurs, and the shelf life is relatively short

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] A preparation method of an odor additive without sulfur content for combustible gas, comprising the following steps:

[0034] Step 1. Take 30-40 parts of methyl acrylate and 55-69 parts of ethyl acrylate and pump them into the enamel kettle by a centrifugal pump, stir at a normal speed, and control the temperature change. If the temperature is higher than 40°C, reduce the stirring speed to double Stirring time or suspend stirring and wait for the temperature to drop between 10-40°C.

[0035] Step 2. Add 1.0-5.0 parts of 2-ethyl-3-methylpyrazine liquid at a certain temperature, stir at a normal speed, and control the temperature change. If the temperature is higher than 40°C, reduce the stirring speed and double the stirring time, necessary Stirring can be suspended for ten minutes when the temperature drops to 10-40°C and then continue to stir.

[0036] Step 3. Add 0.05-0.15 parts of 2,6-di-tert-butyl-4-methylphenol solid at a certain temperature, stir at a normal spee...

Embodiment 1

[0045] Step 1. Take 39 parts of methyl acrylate and 59.8 parts of ethyl acrylate and pump them into the enamel kettle by centrifugal pump, and stir for 5 minutes.

[0046] Step 2. Control the temperature and add 1.0 parts of 2-ethyl-3-methylpyrazine liquid at 35°C, and stir for 5 minutes.

[0047] Step 3. Control the temperature at 35°C and add 0.1 part of 2,6-di-tert-butyl-4-methylphenol solid, and stir for 5 minutes.

[0048] Step 4. Control the temperature at 35°C and add 0.1 part of hydroquinone, and mix and stir for 30 minutes.

[0049] Step 5. The production process should be fully explosion-proof and fully enclosed; filling and discharging.

Embodiment 2

[0051] Step 1. Take 35 parts of methyl acrylate and 59.8 parts of ethyl acrylate and pump them into the enamel kettle by a centrifugal pump, and stir for 8 minutes.

[0052] Step 2. Control the temperature and add 5.0 parts of 2-ethyl-3-methylpyrazine liquid at 35°C, and stir for 8 minutes.

[0053] Step 3. Control the temperature at 35°C and add 0.1 part of 2,6-di-tert-butyl-4-methylphenol solid, and stir for 8 minutes.

[0054] Step 4. Control the temperature at 35°C and add 0.1 part of hydroquinone, and mix and stir for 40 minutes.

[0055] Step 5. The production process should be fully explosion-proof and fully enclosed; filling and discharging.

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PUM

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Abstract

The invention belongs to the technical field of fuel gas safety products and chemical product reproducts, relates to a sulfur-content-free odor additive for combustible gas, and a preparation method thereof, and especially relates to a natural gas sulfur-free odorant and a preparation method thereof. The sulfur-content-free odor additive for the combustible gas, disclosed by the invention, is prepared from, by weight, 30 to 40 parts of methyl acrylate, 55 to 69 parts of ethyl acrylate, 1.0 to 5.0 parts of 2-ethyl-3-methylpyrazine, 0.05 to 0.15 part of 2, 6-di-tert-butyl-4-methylphenol solid and 0.05 to 1.5 parts of hydroquinone. A trace amount of the odorant is added into the gas, so that the gas can warn that the odor concentration reaches the second level or above when the explosion lower limit of the gas is 20%, the gas can be immediately smelled once being leaked, and people can give an alarm, escape and self-rescue in time, so that the occurrence of gas leakage accidents is avoided or reduced, and the loss caused by the gas leakage accidents is avoided or reduced; and compared with the existing sulfur-free odorant, the sulfur-content-free odor additive solves the problem of self-aggregation under direct sunlight.

Description

technical field [0001] The invention belongs to the technical field of gas safety products and chemical product reproducts, and relates to a sulfur-free odor additive for combustible gas and a preparation method thereof, in particular to a natural gas sulfur-free odorant and a preparation method thereof. [0002] technical background [0003] As we all know, natural gas is a kind of clean energy and a large amount of natural resources stored in nature. Human beings use natural gas to obtain huge benefits in terms of efficiency, convenience, cleanliness, and environmental protection, which is a major symbol of human civilization. With the wide application of natural gas, the safe use of natural gas is an important issue facing all mankind. Natural gas is flammable and explosive, and it is colorless and odorless. When it leaks into the air, it cannot be sensed by people, that is, it cannot be smelled or seen. Natural gas is lighter than air, and after leaking into the air, it ...

Claims

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Application Information

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IPC IPC(8): C10L3/00F17D3/12
CPCC10L3/006F17D3/12
Inventor 李晓先张旭升肖成峰单乔孟光王微牛海波
Owner 沈阳光正工业有限公司
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