CN114561236A - Environment-friendly additive suitable for combustible gas leakage warning - Google Patents
Environment-friendly additive suitable for combustible gas leakage warning Download PDFInfo
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- CN114561236A CN114561236A CN202210082132.8A CN202210082132A CN114561236A CN 114561236 A CN114561236 A CN 114561236A CN 202210082132 A CN202210082132 A CN 202210082132A CN 114561236 A CN114561236 A CN 114561236A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
- C10L2230/10—Function and purpose of a components of a fuel or the composition as a whole for adding an odor to the fuel or combustion products
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses an environment-friendly additive suitable for combustible gas leakage warning, which is prepared by compounding 80-90% of odorous agent, 5-20% of synergist and 1-10% of stabilizer, wherein the odorous agent consists of a component A and a component B, the component A consists of one or more of acrylic acid C1-C6 alkyl ester, crotonic acid C1-C4 alkyl ester and pentenoic acid C1-C4 alkyl ester, and the component B consists of amide compounds and nitrogen-containing heterocyclic compounds. The environment-friendly additive does not contain sulfur, avoids corrosion to equipment pipelines, can meet the environment-friendly requirement, can play a role in synergy, can achieve a grade of odor of 3-4 at a lower concentration, has good stability, and has a good application prospect when being used as a combustible gas leakage warning additive.
Description
Technical Field
The invention relates to the technical field of environment protection and safety of combustible gas, in particular to an odorant for warning leakage of combustible gas such as natural gas, methane, hydrogen and the like.
Background
At present, most fuel gas used by people is odorless, and in order to ensure that the fuel gas is detected by people at the initial stage of leakage, namely when the explosion limit is not reached, a fuel gas alarm agent with odor is very necessary to be added into the fuel gas. For example, natural gas is colorless and odorless, is inflammable and explosive, and once leakage is difficult to detect in the process of transportation or use, even a trace amount of leakage can be timely detected and remedied after odorous agents for warning gas leakage are added. The addition of odorants is of crucial importance since natural gas concentrations should be detectable when they reach 20% of the lower explosive concentration. The requirement that will satisfy when selecting the gas odorant is more, will mix together gas and the odorant that concentration is lower, will guarantee that the gas has a special warning stink, also will guarantee simultaneously that the odorant can not harm human body, gas management and gas equipment. CJJ/T148-2010 town gas odorizing technical regulation has the following requirements on the quality of the gas odorizing agent: (1) odorant odors should be clearly distinguished from other odors in everyday environments and the odor disappears slowly; (2) under the conditions of temperature and pressure in the gas pipeline system, the odorizing agent should not condense; (3) the degree of the odorant dissolved in water should not be more than 2% (mass fraction); (4) in the period of validity, the odorizing agent stored under the conditions of normal temperature and normal pressure is not decomposed and deteriorated; (5) under the conditions of temperature and pressure of pipeline transportation, the odorizing agent should not have any chemical reaction with the fuel gas and should not cause reaction; (6) the odorizing agent should not produce solid precipitates after combustion; (7) the odorizing agent and its combustion products should not corrode or damage the materials and delivery and distribution systems with which it comes into contact; (8) the odorizing agent should have a level that is noticeable in the air.
At present, the odorizing agent adopted by domestic and overseas town gas is tetrahydrothiophene (abbreviated as THT). The odorization standard is 16-25mg/Nm3Its odor is considered to be the closest to that of the gas being treated. Meanwhile, as the chemical property of the tetrahydrothiophene is very stable, the tetrahydrothiophene is the most stable compound in a plurality of odorants, and compared with other odorants, the tetrahydrothiophene has the advantages of excellent oxidation resistance, stable chemical property and long lasting time of odor retention.
However, the molecular formula of tetrahydrothiophene contains sulfur, and the existence of sulfur not only corrodes equipment pipelines to a certain extent, but also generates sulfur dioxide after being combusted with fuel gas, and certain environmental pollution is caused. With the increasing concern of global and regional environmental problems, the environmental pollution damage caused by natural gas and biomass fuel industries is gradually shown, which leads to the continuous departure of relevant stricter standards and regulations, and in the case of natural gas, new gas quality standards specify that the total sulfur content is not higher than 20mg/m3. The standard has high requirements on the desulfurization of sulfur-containing gas, and the desulfurization process technology or desulfurization solvent needs to be upgraded to realize the standard. Therefore, the search for a sulfur-free substitute product of tetrahydrothiophene will become a great trend in the market.
Disclosure of Invention
The invention provides an environment-friendly additive for warning combustible gas leakage, which is prepared by compounding an odor agent, a synergist and a stabilizer, wherein the mass fraction of each component is as follows: 80-90% of odor agent, 5-20% of synergist and 1-10% of stabilizer, wherein the odor agent is composed of a component A and a component B, the component A is one or more of C1-C6 alkyl acrylate, C1-C4 alkyl crotonate and C1-C4 alkyl pentenoate, and the component B is composed of an amide compound and a nitrogen-containing heterocyclic compound. The environment-friendly additive provided by the invention contains no sulfur in components, so that corrosion to equipment pipelines is avoided, the product can meet the environment-friendly requirement, the components can play a role in synergy, the odor grade can reach 3-4 grade at a lower concentration, the product has better stability, and the environment-friendly additive has a very good application prospect as a combustible gas leakage warning additive and higher popularization value.
In order to solve the above technical problems, the present invention provides an environment-friendly additive for warning of leakage of combustible gas, the specific composition and content of which are as follows:
an environment-friendly additive suitable for warning of combustible gas leakage is prepared by compounding an odor agent, a synergist and a stabilizer; the mass fraction of each component is as follows: 80-90% of odor agent, 5-20% of synergist and 1-10% of stabilizer.
Preferably, the odorant consists of a component a and a component B; the component A is composed of one or more of C1-C6 alkyl acrylate, C1-C4 alkyl crotonate and C1-C4 alkyl pentenoate; the component B consists of an amide compound and a nitrogen-containing heterocyclic compound.
Preferably, the mass fraction of the component A in the odor agent is 40-60%, and the balance is the component B; the mass ratio of the amide compound to the nitrogen-containing heterocyclic compound in the component B is 0.5-3: 1.
Preferably, the amide compound is one or more of N, N-dimethylformamide and N, N-dimethylacetamide; the nitrogen-containing heterocyclic compound is pyridine.
Preferably, the synergist is composed of one or more of C1-C4 alkyl substituted pyrazine, double C1-C4 alkyl substituted pyrazine, single C1-C4 acyl substituted pyrazine, double C1-C4 acyl substituted pyrazine and C3-C9 carboxylic acid.
Preferably, the stabilizer consists of one or more of hydroquinone, antioxidant 2246 and vitamin E.
Preferably, the synergist is any one or two of 2-methylpyrazine and valeric acid; the stabilizer is an antioxidant 2246.
The strength of the odor was determined according to the Sales rating adopted in the guideline for natural gas-gas odorization, ISO/TS 169922, the odor rating of the additive being 3-4.
The invention has the beneficial effects that:
the invention provides an environment-friendly additive for warning combustible gas leakage, which is prepared by compounding a smelly agent, a synergist and a stabilizer, wherein the mass fractions of the components are as follows: 80-90% of odor agent, 5-20% of synergist and 1-10% of stabilizer, wherein the odor agent consists of a component A and a component B; the component A is composed of one or more of C1-C6 alkyl acrylate, C1-C4 alkyl crotonate and C1-C4 alkyl pentenoate; the component B consists of an amide compound and a nitrogen-containing heterocyclic compound. The environment-friendly additive provided by the invention does not contain sulfur components, so that corrosion to equipment pipelines is avoided, the product can meet the environment-friendly requirement, the components can play a role in synergy, the odor grade can reach 3-4 grade at a lower concentration, and the environment-friendly additive has good stability and has a good application prospect as a combustible gas leakage warning additive.
Detailed Description
The present invention is further described below, and the scope of protection of the present invention is not limited to the following:
example 1:
weighing 1.0g of methyl acrylate, 2.0g of ethyl acrylate, 1.0g of 1.0g N, N-dimethylformamide and 1.0g of pyridine, uniformly mixing the above substances, then adding 0.1g of antioxidant 2246 and 1g of 2-methylpyrazine into the mixture, and uniformly stirring and mixing to form the composite additive.
Example 2:
weighing 3.0g of methyl 3-butenoate, 1.0g of 1.0g N, N-dimethylformamide and 1.0g of pyridine, uniformly mixing the above substances, adding 0.1g of antioxidant 2246 and 1g of 2-methylpyrazine into the mixture, and uniformly stirring and mixing to form the composite additive.
Example 3:
weighing 3.0g of methyl 2-pentenoate, 1.0g of 1.0g N, N-dimethylformamide and 1.0g of pyridine, uniformly mixing the above substances, adding 0.1g of antioxidant 2246 and 1g of 2-methylpyrazine into the mixture, and uniformly stirring and mixing to form the composite additive.
Example 4:
weighing 1.0g of methyl acrylate, 2.0g of ethyl acrylate, 0.7g N, N-dimethylformamide and 1.4g of pyridine, uniformly mixing the above substances, then adding 0.1g of antioxidant 2246 and 1g of 2-methylpyrazine into the mixture, and uniformly stirring and mixing to form the composite additive.
Example 5:
weighing 1.0g of methyl acrylate, 2.0g of ethyl acrylate, 1.5g of 1.5g N, N-dimethylformamide and 0.5g of pyridine, uniformly mixing the above substances, then adding 0.1g of antioxidant 2246 and 1g of 2-methylpyrazine into the mixture, and uniformly stirring and mixing to form the composite additive.
Example 6:
weighing 1.0g of methyl acrylate, 2.0g of ethyl acrylate, 1.0g of 1.0g N, N-dimethylformamide and 1.0g of pyridine, uniformly mixing the above substances, then adding 0.1g of antioxidant 2246 and 1g of valeric acid into the mixture, and uniformly stirring and mixing to form the composite additive.
Comparative example 1:
weighing 1.0g of methyl acrylate, 2.0g of ethyl acrylate and 2.0g of pyridine, uniformly mixing the above substances, then adding 0.1g of antioxidant 2246 and 1g of 2-methylpyrazine into the mixture, and uniformly stirring and mixing to form the composite additive.
Comparative example 2:
weighing 1.0g of methyl acrylate, 2.0g of ethyl acrylate and 2.0g of 2.0g N, N-dimethylformamide, uniformly mixing the above substances, then adding 0.1g of antioxidant 2246 and 1g of 2-methylpyrazine into the mixture, and uniformly stirring and mixing to form the composite additive.
The first application embodiment:
GB50028-2006 "town gas design Specification" has the following definitions for odorants: an organic compound or mixture with strong odor. When added to gas at very low concentrations, the gas is given a particular unpleasant warning odor so that the leaking gas is perceived when it reaches its lower explosive limit of 20% or a harmful concentration acceptable to humans. The olfactive intensity of the odorant means the intensity of the odor causing the odorant to be perceived. However, the discrimination and strength of the odor are determined according to individual differences, and the odor strength is determined according to the Sales grade adopted in the guidance for natural gas-gas odorization ISO/TS 169922, and the grade is 0-5. As shown in table 1:
TABLE 1
| Grade of odor | Sense of smell |
| 0 | Without bad smell |
| 0.5 | Very faint odor (lower limit of perception of odor) |
| 1 | Faint odor |
| 2 | Moderate odor (warning odor grade) |
| 3 | Strong stink smell |
| 4 | The odor is very strong |
| 5 | Maximum odor (Upper limit of odor feeling) |
When the odor grade reaches grade 2, normal people with normal olfaction ability can detect the existence of gas in the air.
In the application example of the present invention, ethanol was selected as a diluted solution, and the composite additives prepared in the above examples 1 to 7 and comparative examples 1 to 2 were further diluted to 10mg/m3The concentration of the complex additive solution is 10mg/m3The compound additive solution is evenly sprayed on filter paper, 40 independent testees are selected to smell, the smell grade of each tester is recorded, and finally, the average value is calculated. The results obtained are shown in table 2:
TABLE 2
The odor of the diluted composite additive prepared in the embodiments 1 to 6 is very strong, the obtained smell level is 3-4, N-dimethylformamide is not added in the comparative example 1, pyridine is not added in the comparative example 2, and the prepared composite additive has weak odor, so that the preparation method shows that the odor has a synergistic effect when methyl acrylate, ethyl acrylate, N-dimethylacetamide and pyridine are mixed in a proper proportion and used as an odor agent, the odor level of the product can be improved, and the odor has a very high application prospect when the odor is used as a combustible gas leakage warning additive.
Application example two:
the composite additive solution prepared in example 1 of the present invention was left for the same time to examine the stability of the formulation with the change in the content of the main ingredient.
The detection method comprises the following steps:
the composite additive solution prepared in example 1 was left at 20 ℃ for 20 days and 40 days, respectively, and then sampled to detect the contents of the main components.
Temperature rise investigation: the composite additive solution prepared in example 1 was left at 45 ℃ for 20 days and 40 days, respectively, and then sampled to determine the content of the main component. The results are shown in Table 3.
TABLE 3
As can be seen from Table 3, the composite additive provided by the invention has better stability.
The invention discloses an environment-friendly additive suitable for combustible gas leakage warning, which is prepared by compounding 80-90% of odorous agent, 5-20% of synergist and 1-10% of stabilizer, wherein the odorous agent consists of a component A and a component B, the component A consists of one or more of acrylic acid C1-C6 alkyl ester, crotonic acid C1-C4 alkyl ester and pentenoic acid C1-C4 alkyl ester, and the component B consists of amide compounds and nitrogen-containing heterocyclic compounds. The environment-friendly additive does not contain sulfur, avoids corrosion to equipment pipelines, can meet the environment-friendly requirement, can play a role in synergy, can achieve a grade of odor of 3-4 at a lower concentration, has good stability, and has a good application prospect when being used as a combustible gas leakage warning additive.
Thus, it will be appreciated by those skilled in the art that while embodiments of the invention have been illustrated and described in detail herein, many other variations and modifications can be made which will conform to the principles of the invention, and may be directly ascertained or derived from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (9)
1. The environment-friendly additive suitable for warning the leakage of combustible gas is characterized in that the high-calorific-value environment-friendly additive is prepared by compounding an odor agent, a synergist and a stabilizer; the mass fraction of each component is as follows: 80-90% of odor agent, 5-20% of synergist and 1-10% of stabilizer.
2. The environmentally friendly additive suitable for use in a combustible gas leak warning of claim 1, wherein the odorant consists of a component a and a component B; the component A is composed of one or more of C1-C6 alkyl acrylate, C1-C4 alkyl crotonate and C1-C4 alkyl pentenoate; the component B consists of an amide compound and a nitrogen-containing heterocyclic compound.
3. The environmentally friendly additive suitable for a combustible gas leakage warning according to claim 2, wherein the mass fraction of the component A in the odorant is 40-60%, and the balance is the component B; the mass ratio of the amide compound to the nitrogen-containing heterocyclic compound in the component B is 0.5-3: 1.
4. The environmentally friendly additive suitable for use in a combustible gas leak warning of claim 2, wherein the amide compound is one or more of N, N-dimethylformamide and N, N-dimethylacetamide; the nitrogen-containing heterocyclic compound is pyridine.
5. The environmentally friendly additive for providing a combustible gas leak warning as set forth in claim 1, wherein said synergist is comprised of one or more of C1-C4 alkyl substituted pyrazines, di C1-C4 alkyl substituted pyrazines, mono C1-C4 acyl substituted pyrazines, di C1-C4 acyl substituted pyrazines, and C3-C9 carboxylic acids.
6. The environmentally friendly additive for warning of combustible gas leakage of claim 1, wherein the stabilizer is composed of one or more of hydroquinone, antioxidant 2246 and vitamin E.
7. An environmentally friendly additive suitable for use in a combustible gas leak warning according to claim 5, wherein the synergist is preferably either or both of 2-methylpyrazine and pentanoic acid.
8. The environmentally friendly additive suitable for use in flammable gas leak warnings as claimed in claim 6, wherein said stabilizer is preferably an antioxidant 2246.
9. An eco-friendly additive suitable for use in combustible gas leak warning as claimed in claims 1 to 7 wherein the strength of the odour is determined according to the Sales scale adopted in the guide for natural gas-gas odorisation (ISO/TS 169922), said additive having an odour rating of 3 to 4.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117903857A (en) * | 2024-03-19 | 2024-04-19 | 辽宁厚安科技有限公司 | Sulfur-free odorizing agent ingredient preparation process |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10240028A1 (en) * | 2002-08-27 | 2004-03-11 | Symrise Gmbh & Co. Kg | Mixture e.g. for odorizing liquefied gas comprises at least two alkyl acrylates, sulfur compound, third component and optionally an antioxidant |
| US7108803B1 (en) * | 1998-08-17 | 2006-09-19 | Symrise Gmbh & Co. Kg | Gas odorization method |
| CN1898366A (en) * | 2003-12-19 | 2007-01-17 | 西姆莱斯有限责任两合公司 | Odorisation of fuel gas with low-sulphur content odorisers |
| DE202006018157U1 (en) * | 2006-11-28 | 2007-03-22 | Symrise Gmbh & Co. Kg | Odorant, useful in fuel gas, comprises acrylic acid methyl ester and/or acrylic acid ethyl ester, 2,3-methylethylpyrazine, hydroquinone monomethylether and tertiary-butylhydroxytoluene and/or butylhydroxyanisole |
| US20090300987A1 (en) * | 2006-06-26 | 2009-12-10 | Arkema France | Mixture to add odour to an odourless combustible gas |
| CN101608118A (en) * | 2008-06-19 | 2009-12-23 | 中国石油天然气股份有限公司 | Inhibitor for preventing formation of natural gas hydrate in high-sulfur-content acid gas field |
| CN102149797A (en) * | 2008-07-11 | 2011-08-10 | 英诺斯派克燃料专业有限责任公司 | Fuel composition with enhanced low temperature properties |
| CN113956904A (en) * | 2021-11-25 | 2022-01-21 | 沈阳光正工业有限公司 | Sulfur-free odor additive for combustible gas and preparation method thereof |
-
2022
- 2022-01-24 CN CN202210082132.8A patent/CN114561236B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7108803B1 (en) * | 1998-08-17 | 2006-09-19 | Symrise Gmbh & Co. Kg | Gas odorization method |
| DE10240028A1 (en) * | 2002-08-27 | 2004-03-11 | Symrise Gmbh & Co. Kg | Mixture e.g. for odorizing liquefied gas comprises at least two alkyl acrylates, sulfur compound, third component and optionally an antioxidant |
| CN1898366A (en) * | 2003-12-19 | 2007-01-17 | 西姆莱斯有限责任两合公司 | Odorisation of fuel gas with low-sulphur content odorisers |
| US20090300987A1 (en) * | 2006-06-26 | 2009-12-10 | Arkema France | Mixture to add odour to an odourless combustible gas |
| DE202006018157U1 (en) * | 2006-11-28 | 2007-03-22 | Symrise Gmbh & Co. Kg | Odorant, useful in fuel gas, comprises acrylic acid methyl ester and/or acrylic acid ethyl ester, 2,3-methylethylpyrazine, hydroquinone monomethylether and tertiary-butylhydroxytoluene and/or butylhydroxyanisole |
| CN101608118A (en) * | 2008-06-19 | 2009-12-23 | 中国石油天然气股份有限公司 | Inhibitor for preventing formation of natural gas hydrate in high-sulfur-content acid gas field |
| CN102149797A (en) * | 2008-07-11 | 2011-08-10 | 英诺斯派克燃料专业有限责任公司 | Fuel composition with enhanced low temperature properties |
| CN113956904A (en) * | 2021-11-25 | 2022-01-21 | 沈阳光正工业有限公司 | Sulfur-free odor additive for combustible gas and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117903857A (en) * | 2024-03-19 | 2024-04-19 | 辽宁厚安科技有限公司 | Sulfur-free odorizing agent ingredient preparation process |
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