CN108218659A - Rich advanced alkynes solvent reclamation utilizes method in gas by partial oxidation of natural acetylene technique - Google Patents
Rich advanced alkynes solvent reclamation utilizes method in gas by partial oxidation of natural acetylene technique Download PDFInfo
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- CN108218659A CN108218659A CN201611193187.7A CN201611193187A CN108218659A CN 108218659 A CN108218659 A CN 108218659A CN 201611193187 A CN201611193187 A CN 201611193187A CN 108218659 A CN108218659 A CN 108218659A
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
- C07C5/02—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation
- C07C5/08—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation of carbon-to-carbon triple bonds
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/005—Processes comprising at least two steps in series
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/11—Purification; Separation; Use of additives by absorption, i.e. purification or separation of gaseous hydrocarbons with the aid of liquids
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/148—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound
- C07C7/163—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound by hydrogenation
- C07C7/167—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound by hydrogenation for removal of compounds containing a triple carbon-to-carbon bond
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the iron group metals or copper
- C07C2523/74—Iron group metals
- C07C2523/755—Nickel
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- Oil, Petroleum & Natural Gas (AREA)
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- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The present invention provides rich advanced alkynes solvent reclamation in a kind of gas by partial oxidation of natural acetylene technique and utilizes method, the process that the product after hydrogen plus hydrogen is added to detach by the rich higher alkyne solvent after will be enriched in higher alkyne solvent filter, filtering；The effective higher alkyne eliminated in gas by partial oxidation of natural acetylene technique in rich higher alkyne solvent obtains the operation risk that purified solvent is used in the absorption of alkynes, reduction gas phase higher alkyne transmission process, while reduces environmental pollution.
Description
Technical field
The present invention relates to the methods that advanced alkynes solvent reclamation rich in a kind of gas by partial oxidation of natural acetylene technique utilizes.
Background technology
Acetylene is a kind of important basic chemical industry raw material, organic for producing vinyl chloride, vinyl acetate, 1.4- butanediols etc.
Chemicals.The method of production acetylene mainly has carbide and gas by partial oxidation of natural method at present, compared with carbide, natural gas portion
Point oxidizing process has the advantages that low energy consumption, pollution is small, can be widely used in the Western European countries.Gas by partial oxidation of natural legal system acetylene is
A certain proportion of natural gas for being preheating to certain temperature and oxygen are mixed and reacted in acetylene reaction stove, reaction product is used
The media such as water, oil are by cracked gas quenching within 100 DEG C, being sent after dedusting, cooling, compression to thick acetylene concentration device, profit
The technique that cracked gas is further separated into product acetylene gas, synthesis gas and higher alkyne gas with NMP, DMF equal solvent.It is advanced
A kind of alkynes unsaturated hydrocarbons high as reactivity, easily polymerization, decomposition, generate the polymer such as macromolecular aromatic hydrocarbon, chain hydrocarbon,
These polymer are deposited in equipment, in pipeline, are easy to cause pipe-line equipment blocking, influence device service life；And advanced alkynes
It easily explodes under high pressure, for example, when the partial pressure of diacetylene is higher than 0.02MPa (absolute pressure), explosive decomposition easily occurs.
The higher alkyne of process units is sent through acetylene tail gas dilution heat tracing to boiler combustion at present, there is not yet recycling technology
Relevant report.
Invention content
The defects of in order to overcome the prior art, the object of the present invention is to provide a kind of gas by partial oxidation of natural acetylene techniques
The method that the middle advanced alkynes solvent reclamation of richness utilizes, this method safety are good, easy to operate.
The object of the present invention is achieved like this：
A kind of method that rich higher alkyne solvent reclamation utilizes in gas by partial oxidation of natural acetylene technique, including will be enriched in
Higher alkyne solvent filter, filtering after rich higher alkyne solvent add hydrogen, plus hydrogen after product separation process；The richness is advanced
Alkynes solvent refers to the rich gas solvent obtained after compressed partial oxidation products (abbreviation cracked gas) pressurizing absorption, then passes through
Cross the solvent after synthesis gas stripping recovery acetylene；Described plus hydrogen refer to using rich advanced alkynes solvent and hydrogen nickel as
In the case of catalyst, by the unsaturated hydrocarbons in rich advanced alkynes solvent by the way that hydrogen is added to become the process of saturated hydrocarbons, wherein not
Saturated hydrocarbons is one or more mixing in acetylene, methyl alkynes, allene, vinylacetylene and diacetylene.
An embodiment according to the present invention, above-mentioned solvent are NMP or DMF.
Add hydrogen effect to increase, improve higher alkyne organic efficiency, an embodiment according to the present invention is above-mentioned to add
The temperature of hydrogen reaction is 60-130 DEG C, pressure 0.8-2.2MPa.
In order to further improve higher alkyne organic efficiency, an embodiment according to the present invention, above-mentioned hydrogenation reaction
Temperature for 70-110 DEG C, pressure 1.6-2.0MPa.
In order to improve production compliance, an embodiment according to the present invention is above-mentioned to be filtered into using activated carbon as filtering
Medium removes the impurity such as polymer, slightly solubility inorganic salts, iron oxide contained in rich higher alkyne solvent.
In order to improve the separating effect of single component, an embodiment according to the present invention, product exists after above-mentioned plus hydrogen
Absolute pressure is 0.016-0.030MPa, and temperature detaches under the conditions of being 110-160 DEG C, and the separation product is saturated hydrocarbons, benzene and water.
An embodiment according to the present invention, above-mentioned saturated hydrocarbons are ethane, propane and/or butane.
An embodiment according to the present invention, rich higher alkyne solvent in above-mentioned gas by partial oxidation of natural acetylene technique
The method of regeneration, the nmp solvent rich in higher alkyne are filtered contained to remove in rich higher alkyne solvent with activated carbon
Polymer, slightly solubility inorganic salts and/or iron oxide, rich higher alkyne solvent and hydrogen after filtering are to be in nickel
Catalyst is 70-110 DEG C in temperature, and pressure makes process of the unsaturated hydrocarbons as saturated hydrocarbons under conditions of being 1.6-2.0MPa,
Wherein unsaturated hydrocarbons is one or more mixing in acetylene, methyl alkynes, allene, vinylacetylene and diacetylene；Add hydrogen
Later solvent is 0.016-0.030MPa in absolute pressure, and temperature isolates saturated hydrocarbons, benzene and water for 110-160 DEG C of condition, wherein
Saturated hydrocarbons is ethane, propane and/or butane.
Advantageous effect
The present invention provides a kind of method that the advanced alkynes solvent reclamation of richness utilizes, by will be enriched in higher alkyne solvent filter,
Rich higher alkyne solvent after filtering add hydrogen, plus hydrogen after product separation process；Effectively eliminate gas by partial oxidation of natural
Higher alkyne in acetylene technique processed in rich higher alkyne solvent obtains purified solvent and is used for the absorption of alkynes, reduces gas
Operation risk in phase higher alkyne transmission process, while reduce environmental pollution.
The present invention by rich higher alkyne solvent filter, plus hydrogen, plus hydrogen after product detach etc. series of parameters cooperation,
It is achieved thereby that recycling the higher alkyne in gas by partial oxidation of natural acetylene technique in rich higher alkyne solvent, successfully make
For into products such as ethane, propane, butane and benzene, the efficient utilization of by-product is realized.It is molten by rich higher alkyne of the invention
The further control of the parameters such as the product separation after agent filtering plus hydrogen plus hydrogen, can realize that alkynes adds hydrogen complete, realization ethane,
Propane, butylene, butane, vinylacetylene, diacetylene, benzene are effectively detached from solvent, and solvent purity is more than 99% technology
Effect.
Description of the drawings
The process flow chart that the rich advanced alkynes solvent reclamations of Fig. 1 utilize, wherein D001-filter R001-hydrogenation reactor,
D002-gas-liquid separator, D003-vacuum separator.
Specific embodiment
In order to make the purpose of the present invention and technical solution clearer, the preferred embodiment of the present invention is carried out below detailed
Description.To illustrate that：Following embodiment is served only for that the present invention is further detailed, and it is not intended that this hair
The limitation of bright protection domain.Those skilled in the art's the above according to the present invention make some it is nonessential improvement and
Adjustment all belongs to the scope of protection of the present invention.Instrument of the present invention, raw material and reagent are commercial product.The embodiment of the present invention
In C6+ refer in molecule comprising unsaturated hydrocarbons or saturated hydrocarbons more than 6 carbon atoms.The present invention is distinguished with gas chromatograph
The composition of the rich higher alkyne solvent gas of analysis and liquid product.
Embodiment 1
The operation principle that rich advanced alkynes solvent reclamation utilizes：
As shown in Figure 1, the warp of NMP (N-Methyl pyrrolidone) solvent rich in higher alkyne sent from acetylene concentration device
After crossing filter D001 removing solid impurities and polymer, it is sent to after reactor R001 is mixed with hydrogen and is entered instead with pump
Device catalyst bed is answered to be reacted, gas-liquid separator is sent to after reaction and is detached, is generated by adding hydrogen
Alkane solubility in NMP is relatively low, so most of alkane is desorbed from solvent, as hydrogen more than needed enters gas phase, liquid
A small amount of alkane, alkene, the benzene contained in phase solvent, vacuum separator is sent to pump, temperature is 156 DEG C, pressure is
Alkane, alkene, benzene are detached with nmp solvent under the conditions of 0.023MPa, alkane, alkene, benzene enter gas phase as product gas, liquid phase
Namely regenerated nmp solvent.
The use of DMF is solvent, recycling route is identical with more than principle.
Regeneration technique：
Rich higher alkyne solvent (solvent group into be shown in Table 1) from acetylene recovery tower tower reactor after filter removes impurity,
It is reacted (reaction condition is shown in Table 2), is reacted into catalytic reactor bed layer after reactor is mixed with hydrogen by being sent into after liquid phase pump
Product after gas-liquid separator separates go out gas, liquid phase (product is shown in Table 3) into vacuum separator (separation condition is shown in Table 5), into
One step isolates remaining hydro carbons (after regeneration solvent group into be shown in Table 4), realizes the purification of solvent.
The rich higher alkyne solvent table (%) of table 1
2 reaction condition table of table
Liquid product composition table (%) of the table 3 after gas-liquid separator separates
Liquid product composition table (%) of the table 4 after vacuum separator detaches
5 separation condition list of table
With reference to embodiment 1, according to following parameter operation embodiment 2-5.
Embodiment 2
Rich higher alkyne solvent (solvent group into be shown in Table 6) from acetylene recovery tower tower reactor after filter removes impurity,
It is reacted (reaction condition is shown in Table 7), is reacted into catalytic reactor bed layer after reactor is mixed with hydrogen by being sent into after liquid phase pump
Product after gas-liquid separator separates go out gas, liquid phase (product is shown in Table 8) into vacuum separator (separation condition is shown in Table 10), into
One step isolates remaining hydro carbons (solvent group into be shown in Table 9) after regeneration, realizes the purification of solvent.
The rich higher alkyne solvent table (%) of table 6
7 reaction condition table of table
Liquid product composition table (%) of the table 8 after gas-liquid separator separates
Liquid product composition table (%) of the table 9 after vacuum separator detaches
10 separation condition list of table
Embodiment 3
Rich higher alkyne solvent (solvent group into be shown in Table 11) from acetylene recovery tower tower reactor after filter removes impurity,
It is reacted (reaction condition is shown in Table 12), is reacted into catalytic reactor bed layer after reactor is mixed with hydrogen by being sent into after liquid phase pump
Product after gas-liquid separator separates go out gas, liquid phase (product is shown in Table 13) into vacuum separator (separation condition is shown in Table 15),
Remaining hydro carbons (solvent group into be shown in Table 14) after regeneration is further separated out, realizes the purification of solvent.
The rich higher alkyne solvent table (%) of table 11
12 reaction condition table of table
Liquid product composition table (%) of the table 13 after gas-liquid separator separates
Liquid product composition table (%) of the table 14 after vacuum separator detaches
15 separation condition list of table
Embodiment 4
From the rich higher alkyne solvent of acetylene recovery tower tower reactor (solvent group into be shown in Table 16) after filter removes impurity, by
It is sent into after liquid phase pump after reactor is mixed with hydrogen and is reacted (reaction condition is shown in Table 17) into catalytic reactor bed layer, reaction production
Object after gas-liquid separator separates go out gas, liquid phase (product is shown in Table 18) into vacuum separator (separation condition is shown in Table 19), into
One step isolates remaining hydro carbons (solvent group into be shown in Table 20) after regeneration, realizes the purification of solvent.
The rich higher alkyne solvent table (%) of table 16
17 reaction condition table of table
Liquid product composition table (%) of the table 18 after gas-liquid separator separates
19 separation condition list of table
Liquid product composition table (%) of the table 20 after vacuum separator detaches
Embodiment 5
From the rich higher alkyne solvent of acetylene recovery tower tower reactor (solvent group into be shown in Table 21) after filter removes impurity, by
It is sent into after liquid phase pump after reactor is mixed with hydrogen and is reacted (reaction condition is shown in Table 22) into catalytic reactor bed layer, reaction production
Object after gas-liquid separator separates go out gas, liquid phase (product is shown in Table 23) into vacuum separator (separation condition is shown in Table 24), into
One step isolates remaining hydro carbons (solvent group into be shown in Table 25) after regeneration, realizes the purification of solvent.
The rich higher alkyne solvent table (%) of table 21
22 reaction condition table of table
Liquid product composition table (%) of the table 23 after gas-liquid separator separates
24 separation condition list of table
Liquid product composition table (%) of the table 25 after vacuum separator detaches
The further control of parameters is detached etc. by the product after higher alkyne solvent filter of the invention rich plus hydrogen plus hydrogen,
Realizing alkynes adds hydrogen complete, and ethane, propane, butylene, butane, vinylacetylene, diacetylene, benzene are effectively detached from solvent,
Solvent purity is more than 99% technique effect.
Claims (9)
1. a kind of method that rich higher alkyne solvent reclamation utilizes in gas by partial oxidation of natural acetylene technique, including will be enriched in height
Rich higher alkyne solvent after grade alkynes solvent filter, filtering adds the process of the product separation after hydrogen plus hydrogen；The advanced alkynes of richness
Hydrocarbon solvent refers to the rich gas solvent after compressed partial oxidation products, using molten after synthesis gas stripping recovery acetylene
Agent；Described plus hydrogen refers to using rich advanced alkynes solvent and hydrogen in the case of nickel is catalyst, by rich advanced alkynes
Unsaturated hydrocarbons in solvent becomes the process of saturated hydrocarbons by adding hydrogen, wherein unsaturated hydrocarbons be acetylene, methyl alkynes, the third two
One or more mixing in alkene, vinylacetylene and diacetylene.
2. the method as described in claim 1, it is characterised in that：The solvent is NMP or DMF.
3. method as claimed in claim 1 or 2, it is characterised in that：The temperature of the hydrogenation reaction is 60-130 DEG C, and pressure is
0.8-2.2MPa。
4. method as claimed in claim 3, it is characterised in that：The temperature of the hydrogenation reaction is 70-110 DEG C, and pressure is
1.6-2.0MPa。
5. the method as described in claim 1,2 or 4, it is characterised in that：Product is 0.016- in absolute pressure after described plus hydrogen
0.030MPa, temperature detach under the conditions of being 110-160 DEG C, and the separation product is saturated hydrocarbons, benzene and water.
6. method as claimed in claim 5, it is characterised in that：The saturated hydrocarbons is ethane, propane and/or butane.
7. method as claimed in claim 3, it is characterised in that：Product is 0.016-0.030MPa in absolute pressure after described plus hydrogen,
Temperature detaches under the conditions of being 110-160 DEG C, and the separation product is saturated hydrocarbons, benzene and water.
8. the method for claim 7, it is characterised in that：The saturated hydrocarbons is ethane, propane and/or butane.
9. the method as described in claim 1, it is characterised in that：Rich advanced alkynes in the gas by partial oxidation of natural acetylene technique
The method of hydrocarbon solvent regeneration, the nmp solvent rich in higher alkyne filter to remove in rich higher alkyne solvent with activated carbon
Contained polymer, slightly solubility inorganic salts and/or iron oxide, the rich higher alkyne solvent and hydrogen after filtering is bear in aluminium oxide
Load nickel is catalyst, is 70-110 DEG C in temperature, and pressure makes unsaturated hydrocarbons become saturated hydrocarbons under conditions of being 1.6-2.0MPa
Process, wherein unsaturated hydrocarbons is one or more mixed in acetylene, methyl alkynes, allene, vinylacetylene and diacetylene
It closes；Solvent after hydrogen is added in absolute pressure to be 0.016-0.030MPa, temperature for 110-160 DEG C of condition isolate saturated hydrocarbons, benzene and
Water, wherein saturated hydrocarbons are ethane, propane and/or butane.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109796295A (en) * | 2018-12-28 | 2019-05-24 | 青海盐湖工业股份有限公司 | A kind of natural gas pyrolysis acetylene concentration system and its technique |
| CN111574423A (en) * | 2019-02-15 | 2020-08-25 | 中国石油化工股份有限公司 | Method for recovering NMP solvent in process of preparing acetylene by partial oxidation of natural gas |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486625A (en) * | 2009-02-19 | 2009-07-22 | 山东科技大学 | Fractionation process for cracking gas from oxidation pyrolysis of gaseous hydrocarbon |
| US20100217053A1 (en) * | 2009-02-17 | 2010-08-26 | Cornelius Peuckert | Purification of an Aromatic Fraction Containing Acetylenes by Selective Hydrogenation of the Acetylenes |
| CN102659501A (en) * | 2012-05-07 | 2012-09-12 | 浙江大学 | Method for separating acetylene from cracked gas by solvent absorption and adsorption separation coupling |
| CN105312058A (en) * | 2014-07-03 | 2016-02-10 | 中国石油化工股份有限公司 | Diacetylene hydrogenation catalyst |
| CN105693452A (en) * | 2016-03-31 | 2016-06-22 | 北京神雾环境能源科技集团股份有限公司 | Purifying system and method for acetylene preparation from natural gas |
-
2016
- 2016-12-21 CN CN201611193187.7A patent/CN108218659A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100217053A1 (en) * | 2009-02-17 | 2010-08-26 | Cornelius Peuckert | Purification of an Aromatic Fraction Containing Acetylenes by Selective Hydrogenation of the Acetylenes |
| CN101486625A (en) * | 2009-02-19 | 2009-07-22 | 山东科技大学 | Fractionation process for cracking gas from oxidation pyrolysis of gaseous hydrocarbon |
| CN102659501A (en) * | 2012-05-07 | 2012-09-12 | 浙江大学 | Method for separating acetylene from cracked gas by solvent absorption and adsorption separation coupling |
| CN105312058A (en) * | 2014-07-03 | 2016-02-10 | 中国石油化工股份有限公司 | Diacetylene hydrogenation catalyst |
| CN105693452A (en) * | 2016-03-31 | 2016-06-22 | 北京神雾环境能源科技集团股份有限公司 | Purifying system and method for acetylene preparation from natural gas |
Non-Patent Citations (2)
| Title |
|---|
| 严红: ""乙炔装置生产堵塞原因分析及对策"", 《乙烯工业》 * |
| 张付利主编: "《有机化学》", 31 January 2010, 河南大学出版社, * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109796295A (en) * | 2018-12-28 | 2019-05-24 | 青海盐湖工业股份有限公司 | A kind of natural gas pyrolysis acetylene concentration system and its technique |
| CN111574423A (en) * | 2019-02-15 | 2020-08-25 | 中国石油化工股份有限公司 | Method for recovering NMP solvent in process of preparing acetylene by partial oxidation of natural gas |
| CN111574423B (en) * | 2019-02-15 | 2022-08-19 | 中国石油化工股份有限公司 | Method for recovering NMP solvent in process of preparing acetylene by partial oxidation of natural gas |
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