ES367247A1 - Dealkylation of alkylaromatic hydrocarbons - Google Patents
Dealkylation of alkylaromatic hydrocarbonsInfo
- Publication number
- ES367247A1 ES367247A1 ES367247A ES367247A ES367247A1 ES 367247 A1 ES367247 A1 ES 367247A1 ES 367247 A ES367247 A ES 367247A ES 367247 A ES367247 A ES 367247A ES 367247 A1 ES367247 A1 ES 367247A1
- Authority
- ES
- Spain
- Prior art keywords
- toluene
- dealkylation
- benzene
- column
- fed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000020335 dealkylation Effects 0.000 title abstract 5
- 238000006900 dealkylation reaction Methods 0.000 title abstract 5
- 229930195733 hydrocarbon Natural products 0.000 title abstract 2
- 150000002430 hydrocarbons Chemical class 0.000 title abstract 2
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract 15
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 12
- 238000005194 fractionation Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 229910002651 NO3 Inorganic materials 0.000 abstract 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 abstract 1
- POEGSEYQPUAOAY-UHFFFAOYSA-J O(Cl)Cl.[Zr+4].S(=O)(=O)([O-])[O-].S(=O)(=O)([O-])[O-] Chemical compound O(Cl)Cl.[Zr+4].S(=O)(=O)([O-])[O-].S(=O)(=O)([O-])[O-] POEGSEYQPUAOAY-UHFFFAOYSA-J 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 239000004927 clay Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000000746 purification Methods 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 abstract 1
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 abstract 1
- PCRXGECPBFQIJM-UHFFFAOYSA-K titanium(3+) chloride sulfate Chemical compound [Cl-].S(=O)(=O)([O-])[O-].[Ti+3] PCRXGECPBFQIJM-UHFFFAOYSA-K 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
- C07C15/02—Monocyclic hydrocarbons
- C07C15/04—Benzene
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S203/00—Distillation: processes, separatory
- Y10S203/11—Batch distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Benzene is produced from toluene during a process in which a feed-stock containing toluene is fed at 10 into a fractionation column 11, into which is also fed at 12 a dealkylation effluent comprising benzene, effluent 12 preferably being introduced above feed 10 as shown. The fractionation column has two (or more) reboilers 23 and 24 positioned below the feed point 10. From column 11 the following streams are taken: an overhead 13 of light hydrocarbons a first side-cut 14 of product benzene a second side-cut 16 of toluene (preferably taken between the two reboilers) and a bottoms fraction 15. The toluene cut is fed via 19 to dealkylation reactor 29, which may be thermal or catalytic, preferably the latter, and which preferably operates in the presence of hydrogen 27. After separation, stripping and optional clay treatment to remove colour impurities, the dealkylation effluent enters column 11 as above. The reboilers are preferably internally located in column 11 as shown, and liquid wells 25 and 26 may be provided to maintain liquid seals over the reboiler tubes, the lower well 26 being fed by recycling part of the bottoms fraction. Preferred dealkylation catalysts comprise a silica sol together with one of the following Group IV salts: tin chloride, nitrite or sulphate titanium chloride, nitrate or sulphate zirconium oxychloride, oxybromide or oxyiodide. The scheme enables simultaneous purification of the feed and the effluent to be effected. The claims are not limited to the production of benzene from toluene.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US72971968A | 1968-05-16 | 1968-05-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES367247A1 true ES367247A1 (en) | 1972-01-16 |
Family
ID=24932297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES367247A Expired ES367247A1 (en) | 1968-05-16 | 1969-05-14 | Dealkylation of alkylaromatic hydrocarbons |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3558729A (en) |
| JP (1) | JPS518928B1 (en) |
| BR (1) | BR6908912D0 (en) |
| DE (1) | DE1923564B2 (en) |
| ES (1) | ES367247A1 (en) |
| FR (1) | FR2011841A1 (en) |
| GB (1) | GB1214955A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5843860B2 (en) | 2010-08-10 | 2016-01-13 | アーエスエス・アインリヒトゥングスシステム・ゲーエムベーハー | Seat furniture items |
| KR101810938B1 (en) * | 2012-12-19 | 2017-12-20 | 테크닙 프로세스 테크놀로지 인코포레이티드 | Method for reducing energy consumption in a process to purify styrene monomer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3193594A (en) * | 1961-09-29 | 1965-07-06 | Union Oil Co | Manufacture of naphthalene |
| US3310593A (en) * | 1965-06-23 | 1967-03-21 | Gulf Research Development Co | Method for improving the quality of dealkylated aromatic compounds |
-
1968
- 1968-05-16 US US729719A patent/US3558729A/en not_active Expired - Lifetime
-
1969
- 1969-05-06 GB GB23019/69A patent/GB1214955A/en not_active Expired
- 1969-05-08 DE DE19691923564 patent/DE1923564B2/en active Granted
- 1969-05-14 ES ES367247A patent/ES367247A1/en not_active Expired
- 1969-05-16 BR BR20891269A patent/BR6908912D0/en unknown
- 1969-05-16 JP JP44037441A patent/JPS518928B1/ja active Pending
- 1969-05-16 FR FR6915844A patent/FR2011841A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE1923564A1 (en) | 1970-12-03 |
| DE1923564C3 (en) | 1973-12-20 |
| FR2011841A1 (en) | 1970-03-13 |
| DE1923564B2 (en) | 1973-05-24 |
| JPS518928B1 (en) | 1976-03-22 |
| GB1214955A (en) | 1970-12-09 |
| US3558729A (en) | 1971-01-26 |
| BR6908912D0 (en) | 1973-02-15 |
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