CN102924218B - Multifunctional antioxidant for benzene preparing device and using method thereof - Google Patents
Multifunctional antioxidant for benzene preparing device and using method thereof Download PDFInfo
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- CN102924218B CN102924218B CN201210444707.2A CN201210444707A CN102924218B CN 102924218 B CN102924218 B CN 102924218B CN 201210444707 A CN201210444707 A CN 201210444707A CN 102924218 B CN102924218 B CN 102924218B
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- oxidation inhibitor
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- benzene
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- preparing device
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Abstract
The invention relates to a multifunctional antioxidant for a benzene preparing device and a using method thereof. The multifunctional antioxidant comprises a phenolic compound, an amine compound and organic solvent. The multifunctional antioxidant for the benzene preparing device overcomes the shortcoming that the existing antioxidant can only reduce polymerization speed, cannot prolong the polymerization induction period, is large in dosage, and the like. Therefore, operation time of the benzene preparing device is effectively prolonged, yield of the benzene preparing device and product quality are improved, and the production process of the benzene preparing device can gain good economical benefits.
Description
technical field:
The present invention relates to a kind of preparation and using method thereof of the superpower multi-functional oxidation inhibitor for benzene production equipment
background technology:
Benzene production equipment be byproduct pyrolysis gasoline take ethylene unit as raw material, production purified petroleum benzin is major product, the multiple petrochemicals of by-product simultaneously, as products such as C5, C9, toluene, C8.
In above-mentioned production process, be very easy to occur radical polymerization owing to containing a large amount of active C5 diolefins (cyclopentadiene, pentadiene, isoprene etc.) in pyrolysis gasoline, generate foulant colloid, the equipment such as blocking pipe, pump and tower, especially in the situation that aerobic exists, its reaction is more prone to carry out, and the increase of gum level, both easily cause catalyst surface coking, affected hydrogenation activity and the selectivity of catalyzer.Convert gasoline when colloid Gao Shihui causes C7, C8 product can not send refinery to mix on the other hand, thereby affect gasoline output.Particularly the depentanizer cycle of operation shorter, all need every year to switch maintenance.And the return tank recycle pump of tower, the outer line sending pump of product and product are sent the frequent blockage phenomenon of pipeline outside, and this has become a current large bottleneck that affects benzene production equipment long-period stable operation.
summary of the invention:
The object of the present invention is to provide a kind of preparation and using method thereof of the superpower multi-functional oxidation inhibitor for benzene production equipment.Adopt phenols and aminated compounds to carry out composite, form a kind of compound superpower multi-functional oxidation inhibitor, thereby effectively extend the working time of benzene production equipment, improve output and the quality of benzene, make the production process of benzene production equipment obtain better economic benefit.
Invention main points:
The present invention is a kind of high-efficiency anti-oxidant for benzene production equipment, effective constituent comprises A component, B component and organic solvent, the mass ratio that it is characterized in that A component and B component is 0.1 ~ 10:1, be preferably 0.8 ~ 2:1, wherein A component is phenolic compound, can be selected from the one in 2,6 ditertiary butyl p cresol and 4-methylol-2,6 di t butyl phenol; B component is aminated compounds, can be selected from N, N ˊ-diphenyl ethylene diamine, N, N ˊ-diphenylprop diamines and N, the one in N ˊ-di-o-tolyl-ethylene-diamine.Organic solvent is C
5~ C
10hydro carbons, its consumption is not strict with, and makes A, B two components dissolve completely and have suitable viscosity, preferably makes kinematic viscosity remain on≤5mm in the time of 40 ℃ of above-mentioned oxidation inhibitor
2the scope of/s is for well.
The present invention also provides a kind of using method of the multi-functional oxidation inhibitor for benzene production equipment, and oxidation inhibitor of the present invention is added in depentanizer feeding line pyrolysis gasoline to be not less than the mass concentration of 1ppm.
The present invention obtains on the Research foundation that produces reason and active C5 diolefin polymerization mechanism to causing active C5 diolefin polymerization, research shows to cause the factor aerobic, superoxide, metallic impurity, high temperature of active C5 diolefin polymerization etc., and active C5 diolefin polymerization is followed radical polymerization mechanism.
Active C5 diolefin can catalysis generate free radical in higher temperature or contacting metal, and accelerates polyreaction process by two kinds of modes.If there is the existence of superoxide, free radical and monomer reaction generate peroxy radical, and peroxy radical will further react with diolefin and generate more free radical.Once and produced free radical, will polymerization reaction take place, number of free radical is higher, the speed of polyreaction is just faster.Oxidation inhibitor of the present invention contains metal passivation composition, can generate stable complex compound with metal ion-chelant, suppresses metal ion and causes free radical generation; Also contain peace and quiet dispersion component, this composition can be adsorbed on the tiny polymer surfaces having formed in the material of upstream and form protective membrane, stops polyreaction to continue to occur; The most important thing is that the resistance to the oxygen inhibiting polymerization composition containing in oxidation inhibitor of the present invention is high temperature resistant, can fully catch peroxy radical, thereby effectively suppress active C5 diolefin polymerization.In oxidation inhibitor of the present invention, between two class components, synergistic effect is obvious, and to subsequent product, without any detrimentally affect, and oxidation inhibitor of the present invention also has the advantage that cost is low.
embodiment:
Embodiment 1-10:
Under constantly stirring, in mass, at commercially available 2# solvent, (be commodity row number, major ingredient is C
5~ C
10hydro carbons) in add respectively the A component shown in table 1, B component, it is mixed, make multi-functional oxidation inhibitor of the present invention.
The component of table 1: embodiment 1 ~ 10 oxidation inhibitor and proportioning (in table, data are mass fraction)
Embodiment 11:
The oxidation inhibitor of example 1 is joined and evaluates that (evaluating raw material is the pyrolysis gasoline material of industrial actual benzene production equipment in raw material by 500ppm, its quality group becomes: 33.11% benzene, 31.09% C5+ C6 are following, 15.98% toluene, 4.45% C6+C9 non-aromatics and 2.41% dicyclopentadiene etc.), be that 95 ℃, pressure are under 2.5Mpa condition in temperature, after 12 hours, be 1.1mg/100ml according to GB/T 509-88 standard test gum level.
Embodiment 12:
The oxidation inhibitor of example 2 is joined and evaluates that (evaluating raw material is the pyrolysis gasoline material of industrial actual benzene production equipment in raw material by 250ppm, its quality group becomes: 33.11% benzene, 31.09% C5+ C6 are following, 15.98% toluene, 4.45% C6+C9 non-aromatics and 2.41% dicyclopentadiene etc.), be that 95 ℃, pressure are under 2.5Mpa condition in temperature, after 12 hours, be 1.2mg/100ml according to GB/T 509-88 standard test gum level.
Embodiment 13:
The oxidation inhibitor of example 3 is joined and evaluates that (evaluating raw material is the pyrolysis gasoline material of industrial actual benzene production equipment in raw material by 150ppm, its quality group becomes: 33.11% benzene, 31.09% C5+ C6 are following, 15.98% toluene, 4.45% C6+C9 non-aromatics and 2.41% dicyclopentadiene etc.), be that 95 ℃, pressure are under 2.5Mpa condition in temperature, after 12 hours, be 1.5mg/100ml according to GB/T 509-88 standard test gum level.
Embodiment 14:
The oxidation inhibitor of example 4 is joined and evaluates that (evaluating raw material is the pyrolysis gasoline material of industrial actual benzene production equipment in raw material by 100ppm, its quality group becomes: 33.11% benzene, 31.09% C5+ C6 are following, 15.98% toluene, 4.45% C6+C9 non-aromatics and 2.41% dicyclopentadiene etc.), be that 95 ℃, pressure are under 2.5Mpa condition in temperature, after 12 hours, be 1.2mg/100ml according to GB/T 509-88 standard test gum level.
Embodiment 15:
The oxidation inhibitor of example 5 is joined and evaluates that (evaluating raw material is the pyrolysis gasoline material of industrial actual benzene production equipment in raw material by 50ppm, its quality group becomes: 33.11% benzene, 31.09% C5+ C6 are following, 15.98% toluene, 4.45% C6+C9 non-aromatics and 2.41% dicyclopentadiene etc.), be that 95 ℃, pressure are under 2.5Mpa condition in temperature, after 12 hours, be 1.2mg/100ml according to GB/T 509-88 standard test gum level.
Embodiment 16:
The oxidation inhibitor of example 6 is joined and evaluates that (evaluating raw material is the pyrolysis gasoline material of industrial actual benzene production equipment in raw material by 50ppm, its quality group becomes: 33.11% benzene, 31.09% C5+ C6 are following, 15.98% toluene, 4.45% C6+C9 non-aromatics and 2.41% dicyclopentadiene etc.), be that 95 ℃, pressure are under 2.5Mpa condition in temperature, after 12 hours, be 1.4mg/100ml according to GB/T 509-88 standard test gum level.
Embodiment 17:
The oxidation inhibitor of example 7 is joined and evaluates that (evaluating raw material is the pyrolysis gasoline material of industrial actual benzene production equipment in raw material by 50ppm, its quality group becomes: 33.11% benzene, 31.09% C5+ C6 are following, 15.98% toluene, 4.45% C6+C9 non-aromatics and 2.41% dicyclopentadiene etc.), be that 95 ℃, pressure are under 2.5Mpa condition in temperature, after 12 hours, be 1.19mg/100ml according to GB/T 509-88 standard test gum level.
Embodiment 18:
The oxidation inhibitor of example 8 is joined and evaluates that (evaluating raw material is the pyrolysis gasoline material of industrial actual benzene production equipment in raw material by 5ppm, its quality group becomes: 33.11% benzene, 31.09% C5+ C6 are following, 15.98% toluene, 4.45% C6+C9 non-aromatics and 2.41% dicyclopentadiene etc.), be that 95 ℃, pressure are under 2.5Mpa condition in temperature, after 12 hours, be 1.5mg/100ml according to GB/T 509-88 standard test gum level.
Embodiment 19:
The oxidation inhibitor of example 9 is joined and evaluates that (evaluating raw material is the pyrolysis gasoline material of industrial actual benzene production equipment in raw material by 10ppm, its quality group becomes: 33.11% benzene, 31.09% C5+ C6 are following, 15.98% toluene, 4.45% C6+C9 non-aromatics and 2.41% dicyclopentadiene etc.), be that 95 ℃, pressure are under 2.5Mpa condition in temperature, after 12 hours, be 1.41mg/100ml according to GB/T 509-88 standard test gum level.
Embodiment 20:
The oxidation inhibitor of example 10 is joined and evaluates that (evaluating raw material is the pyrolysis gasoline material of industrial actual benzene production equipment in raw material by 20ppm, its quality group becomes: 33.11% benzene, 31.09% C5+ C6 are following, 15.98% toluene, 4.45% C6+C9 non-aromatics and 2.41% dicyclopentadiene etc.), be that 95 ℃, pressure are under 2.5Mpa condition in temperature, after 12 hours, be 1.20mg/100ml according to GB/T 509-88 standard test gum level.
Blank simultaneous test
Toward evaluating, in raw material, (evaluating raw material is not the pyrolysis gasoline material of industrial actual benzene production equipment, its quality group becomes: 33.11% benzene, 31.09% C5+ C6 are following, 15.98% toluene, 4.45% C6+C9 non-aromatics and 2.41% dicyclopentadiene etc.) add any oxidation inhibitor, be that 95 ℃, pressure are under 2.5Mpa condition in temperature, after 12 hours, be 2.56mg/100ml according to GB/T 509-88 standard test gum level.
Can find out from above applicating evaluating experiment, blank contrast experiment's result, use after superpower multi-functional oxidation inhibitor of the present invention, gum level obviously reduces, and shows that the polymerization of active C5 diolefin has obtained effective inhibition, shows that oxidation inhibitor of the present invention is effective.The invention described above obtains oxidation inhibitor and measures by GB/T 509-88 standard in addition, and kinematic viscosity is≤5mm all in the time of 40 ℃
2/ s, is starkly lower than the viscosity of the oxidation inhibitor of current employing.Approximately low 15% left and right of oxidation inhibitor cost ratio import oxidation inhibitor of the present invention in addition.
Claims (7)
1. for the multi-functional oxidation inhibitor of benzene production equipment, formed by A component and B component and organic solvent, it is characterized in that: the mass ratio of A component and B component is 0.1 ~ 10:1;
Wherein: A component is 2,6 ditertiary butyl p cresol and 4-methylol-2,6 di t butyl phenol; B component is N, N ˊ-diphenyl ethylene diamine, N, N ˊ-diphenylprop diamines and N, N ˊ-di-o-tolyl-ethylene-diamine; Organic solvent is C
5~ C
10hydro carbons.
2. according to the multi-functional oxidation inhibitor of the benzene production equipment of claim 1, it is characterized in that: the mass ratio of A component and B component is 0.8 ~ 2:1.
3. according to the multi-functional oxidation inhibitor of benzene production equipment of claim 1 or 2, it is characterized in that: said organic solvent, its consumption is the kinematic viscosity remain on≤5mm of oxidation inhibitor in the time of 40 ℃
2the scope of/s.
4. for a using method for the multi-functional oxidation inhibitor of benzene production equipment, the oxidation inhibitor of claim 1 or 2 or 3 is added in depentanizer feeding line pyrolysis gasoline to be not less than the mass concentration of 1ppm.
5. according to the using method of claim 4, it is characterized in that: oxidation inhibitor is added in depentanizer feeding line pyrolysis gasoline with the mass concentration of 1～2000ppm.
6. according to the using method of claim 4 or 5, it is characterized in that: oxidation inhibitor is added in depentanizer feeding line pyrolysis gasoline with the mass concentration of 1～1000ppm.
7. according to the using method of claim 6, it is characterized in that: oxidation inhibitor is added in depentanizer feeding line pyrolysis gasoline with the mass concentration of 1～500ppm.
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|---|---|---|---|
| CN201210444707.2A CN102924218B (en) | 2012-11-09 | 2012-11-09 | Multifunctional antioxidant for benzene preparing device and using method thereof |
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| CN201210444707.2A CN102924218B (en) | 2012-11-09 | 2012-11-09 | Multifunctional antioxidant for benzene preparing device and using method thereof |
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|---|---|
| CN102924218A CN102924218A (en) | 2013-02-13 |
| CN102924218B true CN102924218B (en) | 2014-07-09 |
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| CN103553862A (en) * | 2013-11-19 | 2014-02-05 | 北京斯伯乐科技发展有限公司 | Preparation method and using method of pentadiene polymerization inhibitor for cyclopentene device |
| CN115651657B (en) * | 2022-11-03 | 2024-02-09 | 北京斯伯乐科学技术研究院 | Preparation and application methods of deoxidizer for methanol-to-olefin device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613621A (en) * | 2008-06-26 | 2009-12-30 | 中国石油化工股份有限公司 | Splitting gas is selected hydrogenation and separation method |
| CN102234543A (en) * | 2010-04-20 | 2011-11-09 | 中国石油化工股份有限公司 | Method for prolonging service life of pyrolysis gas mixed phase hydrogenation catalyst |
| CN102531822A (en) * | 2011-11-28 | 2012-07-04 | 天津市瑞德赛恩新材料开发有限公司 | Aldehyde and ketone inhibitor for alkaline washing tower of ethylene unit |
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2012
- 2012-11-09 CN CN201210444707.2A patent/CN102924218B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613621A (en) * | 2008-06-26 | 2009-12-30 | 中国石油化工股份有限公司 | Splitting gas is selected hydrogenation and separation method |
| CN102234543A (en) * | 2010-04-20 | 2011-11-09 | 中国石油化工股份有限公司 | Method for prolonging service life of pyrolysis gas mixed phase hydrogenation catalyst |
| CN102531822A (en) * | 2011-11-28 | 2012-07-04 | 天津市瑞德赛恩新材料开发有限公司 | Aldehyde and ketone inhibitor for alkaline washing tower of ethylene unit |
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Address after: 100028 No. 232 Canbo Road, A District, Miyun Industrial Development Zone, Beijing. Patentee after: Beijing SBL Science and Technology Academy Address before: 100028 Chaoyang District, Beijing Shuguang Xili a third estate A block 1203 Patentee before: Beijing SBL Science and Technology Academy |
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