CN103007842A - Methyl nitrite synthesis reactor - Google Patents
Methyl nitrite synthesis reactor Download PDFInfo
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- CN103007842A CN103007842A CN201210574294XA CN201210574294A CN103007842A CN 103007842 A CN103007842 A CN 103007842A CN 201210574294X A CN201210574294X A CN 201210574294XA CN 201210574294 A CN201210574294 A CN 201210574294A CN 103007842 A CN103007842 A CN 103007842A
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Abstract
The invention discloses a methyl nitrite synthesis reactor. One side of the top part at the middle section of a reactor is provided with a methanol inlet; one side at the lower section of the reactor is provided with a reaction gas inlet which is communicated with a sintered gas phase nozzle; a kettle liquid collector is arranged at the lower part of the sintered gas phase nozzle; a kettle liquid outlet which is communicated with a kettle liquid circulating pump through a pipeline is arranged at the bottom of the kettle liquid collector; the kettle liquid circulating pump is communicated with a kettle liquid cooler through the pipeline; the kettle liquid cooler is communicated with a Venturi atomizer through the pipeline; and the Venturi atomizer is arranged on the side wall at the lower section of the reactor. According to the methyl nitrite synthesis reactor, methanol and the reaction gas react in the reactor; and the liquid in the kettle liquid collector is pumped through the kettle liquid circulating pump, cooled by circulating water through the kettle liquid cooler, and injected in a mist state again from the upper part at the lower section of the reactor through the Venturi atomizer, thereby enhancing the reaction mass transfer effect of methanol and nitrogen oxides, lowering the system temperature, preventing over-high temperature and improving the reaction conversion rate.
Description
Technical field
The present invention relates to a kind of reactor, particularly relate to a kind of methyl nitrite synthesis reactor.
Background technology
Methyl nitrite main reaction: 4NO+O
2+ 4CH
3OH=4CH
3ONO+2H
2O
Side reaction: 3NO
2+ H
2O=2HNO
3+ NO
This exothermic heat of reaction amount is large, in order to improve the yield of methyl nitrite, need to react at a lower temperature.Pre-existing reactors can't cool off timely, therefore causes reaction temperature too high, and yield is low.
Summary of the invention
The technical problem to be solved in the present invention provide a kind of simple in structure, prevent excess Temperature, improve the methyl nitrite synthesis reactor of reaction conversion ratio.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of methyl nitrite synthesis reactor, comprise the reactor epimere that is made into integration from top to bottom, reactor stage casing and reactor hypomere, the top of reactor epimere is provided with the reaction gas outlet, in the reactor epimere gas-liquid separator is set, top one side in reactor stage casing is provided with the methyl alcohol import, set gradually drip tray in the reactor stage casing from top to bottom, distributor and structured packing, one side of reactor hypomere arranges reaction gas inlet, reaction gas inlet is communicated with sintered type gas phase nozzle, sintered type gas phase nozzle below arranges the still collection, still collection bottom arranges the outlet of still liquid, the outlet of still liquid is communicated with still liquid circulating pump by pipeline, still liquid circulating pump is communicated with still liquid cooler by pipeline, still liquid cooler is communicated with venturi scrubber by pipeline, venturi scrubber is installed on the reactor hypomere sidewall, and the outlet of venturi scrubber is positioned at the top of sintered type gas phase nozzle.
Methyl nitrite synthesis reactor of the present invention, the tower diameter of wherein said reactor epimere and reactor hypomere is greater than the reactor stage casing.
Methyl nitrite synthesis reactor of the present invention, wherein said structured packing adopt woven wire to make.
Methyl nitrite synthesis reactor of the present invention, methyl alcohol and reaction gas are at the reactor internal reaction, liquid in the still collection is extracted out by still liquid circulating pump, after being cooled with circulating water by still liquid cooler, nebulizing from the top of reactor hypomere by venturi scrubber sprays into again, strengthens the reaction mass transfer effect of methyl alcohol and nitrogen oxide, reduce simultaneously system temperature, prevent excess Temperature, the methyl nitrite decomposition explosion improves reaction conversion ratio.
Below in conjunction with accompanying drawing methyl nitrite synthesis reactor of the present invention is described further.
Description of drawings
Fig. 1 is the structural representation of methyl nitrite synthesis reactor of the present invention.
The specific embodiment
As shown in Figure 1, methyl nitrite synthesis reactor of the present invention comprises reactor epimere 1, reactor stage casing 2 and the reactor hypomere 3 that is made into integration from top to bottom, the tower diameter of reactor epimere 1 and reactor hypomere 3 is greater than reactor stage casing 2, the top of reactor epimere 1 is provided with reaction gas outlet 11, the reactor epimere 1 interior gas-liquid separator 12 that arranges, gas-liquid separator adopts conventional silk screen separator.Top one side in reactor stage casing 2 is provided with methyl alcohol import 21, set gradually drip tray 22 in the reactor stage casing 2 from top to bottom, distributor 23 and structured packing 24, structured packing adopts woven wire to make, one side of reactor hypomere 3 arranges reaction gas inlet 31, reaction gas inlet 31 is communicated with sintered type gas phase nozzle 32, sintered type gas phase nozzle 32 belows arrange still collection 33, still collection 33 bottoms arrange still liquid outlet 34, still liquid outlet 34 is communicated with still liquid circulating pump 35 by pipeline, still liquid circulating pump 35 is communicated with still liquid cooler 36 by pipeline, still liquid cooler 36 is communicated with venturi scrubber 37 by pipeline, and venturi scrubber 37 is installed on the reactor hypomere sidewall.
The production process of methyl nitrite synthesis reactor of the present invention is as follows:
Methyl alcohol enters in the reactor from methyl alcohol import 21, and for methyl nitrite reacts the methyl alcohol of supplying raw materials, reaction gas inlet 31 is communicated with sintered type gas phase nozzle 32, and reactor hypomere inner bottom part liquid material floods sintered type gas phase nozzle, NO:12% in the unstripped gas, O during production
2: 2%, MN:2%, CO:25%, all the other are indifferent gas, unstripped gas autoreaction gas import 31 enters, and enters in the reactor by sintered type gas phase nozzle 32, produces methyl nitrite with methyl alcohol reaction in small bubbling form and the tower in reactor.Liquid in the still collection 33 is extracted out by still liquid circulating pump 35, after being cooled with circulating water by still liquid cooler 36, nebulize from the top of reactor hypomere by venturi scrubber 37 and again to spray into, strengthen the reaction mass transfer effect of methyl alcohol and nitrogen oxide, reduce simultaneously system temperature, prevent excess Temperature, the methyl nitrite decomposition explosion improves reaction conversion ratio.
Set gradually drip tray 22, distributor 23 and structured packing 24 in the reactor stage casing from top to bottom, promote the unreacted material to continue reaction, prevent that moisture and nitric acid that tower reactor generates from rising to reactor epimere top, methyl nitrite then together goes out cat head with gaseous form and circulating air, in the reactor epimere gas-liquid separator is set, by gas-liquid separation, removes the methyl alcohol drop of carrying secretly in the circulating air, it is freely descended in tower, again participate in reaction.Gas is gone out from cat head, through recirculated water and chilled brine cooling, behind the methyl alcohol of separating and condensing, advances next procedure; Condensation methyl alcohol is sent into the fresh methanol groove.
Methyl nitrite is gas at normal temperatures, follows recyclegas and rises in tower, and unreacted NO, O2, methyl alcohol continue reaction at the stage casing filler, and all O2 react and produce MN at last.
Above-described embodiment is described preferred embodiment of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (3)
1. methyl nitrite synthesis reactor, it is characterized in that: comprise the reactor epimere that is made into integration from top to bottom, reactor stage casing and reactor hypomere, the top of reactor epimere is provided with the reaction gas outlet, in the reactor epimere gas-liquid separator is set, top one side in reactor stage casing is provided with the methyl alcohol import, set gradually drip tray in the reactor stage casing from top to bottom, distributor and structured packing, one side of reactor hypomere arranges reaction gas inlet, reaction gas inlet is communicated with sintered type gas phase nozzle, sintered type gas phase nozzle below arranges the still collection, still collection bottom arranges the outlet of still liquid, the outlet of still liquid is communicated with still liquid circulating pump by pipeline, still liquid circulating pump is communicated with still liquid cooler by pipeline, still liquid cooler is communicated with venturi scrubber by pipeline, venturi scrubber is installed on the reactor hypomere sidewall, and the outlet of venturi scrubber is positioned at the top of sintered type gas phase nozzle.
2. methyl nitrite synthesis reactor according to claim 1, it is characterized in that: the tower diameter of described reactor epimere and reactor hypomere is greater than the reactor stage casing.
3. methyl nitrite synthesis reactor according to claim 2 is characterized in that: described structured packing adopts woven wire to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210574294XA CN103007842A (en) | 2012-12-26 | 2012-12-26 | Methyl nitrite synthesis reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210574294XA CN103007842A (en) | 2012-12-26 | 2012-12-26 | Methyl nitrite synthesis reactor |
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| CN103007842A true CN103007842A (en) | 2013-04-03 |
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| CN201210574294XA Pending CN103007842A (en) | 2012-12-26 | 2012-12-26 | Methyl nitrite synthesis reactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111269127A (en) * | 2020-04-23 | 2020-06-12 | 江苏凯美普瑞工程技术有限公司 | Nitric acid purification process and device for methyl nitrite regeneration section |
| CN111530407A (en) * | 2020-04-30 | 2020-08-14 | 中国神华煤制油化工有限公司 | Esterification reactor and esterification reaction method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6191302B1 (en) * | 1997-10-21 | 2001-02-20 | Ube Industries, Ltd. | Process for producing alkyl nitrite |
| CN101314569A (en) * | 2008-07-04 | 2008-12-03 | 天津大学 | Reaction system and preparation method for nitrous alkyl ester |
| CN102807492A (en) * | 2012-08-30 | 2012-12-05 | 安徽淮化股份有限公司 | Process device for producing methyl nitrite |
| CN203030263U (en) * | 2012-12-26 | 2013-07-03 | 安阳盈德气体有限公司 | Methyl nitrite synthesis reactor |
-
2012
- 2012-12-26 CN CN201210574294XA patent/CN103007842A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6191302B1 (en) * | 1997-10-21 | 2001-02-20 | Ube Industries, Ltd. | Process for producing alkyl nitrite |
| CN101314569A (en) * | 2008-07-04 | 2008-12-03 | 天津大学 | Reaction system and preparation method for nitrous alkyl ester |
| CN102807492A (en) * | 2012-08-30 | 2012-12-05 | 安徽淮化股份有限公司 | Process device for producing methyl nitrite |
| CN203030263U (en) * | 2012-12-26 | 2013-07-03 | 安阳盈德气体有限公司 | Methyl nitrite synthesis reactor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111269127A (en) * | 2020-04-23 | 2020-06-12 | 江苏凯美普瑞工程技术有限公司 | Nitric acid purification process and device for methyl nitrite regeneration section |
| CN111530407A (en) * | 2020-04-30 | 2020-08-14 | 中国神华煤制油化工有限公司 | Esterification reactor and esterification reaction method |
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Application publication date: 20130403 |