CN102249973A - Reaction apparatus and reaction method for strataflo production of N-methyl-2-pyrrolidone - Google Patents
Reaction apparatus and reaction method for strataflo production of N-methyl-2-pyrrolidone Download PDFInfo
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- CN102249973A CN102249973A CN2011101343151A CN201110134315A CN102249973A CN 102249973 A CN102249973 A CN 102249973A CN 2011101343151 A CN2011101343151 A CN 2011101343151A CN 201110134315 A CN201110134315 A CN 201110134315A CN 102249973 A CN102249973 A CN 102249973A
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- pyrrolidone
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Abstract
The invention relates to chemical equipment and a reaction method, and especially to a reaction apparatus and a reaction method for strataflo production of N-methyl-2-pyrrolidone. According to the reaction apparatus for strataflo production of N-methyl-2-pyrrolidone, a discharge outlet of a heat exchanger is connected with an inlet of a strataflo reactor. The reaction method comprises the steps of heating materials used for production of N-methyl-2-pyrrolidone, carrying out insulation on the reaction materials for reaction and producing a finished product of N-methyl-2-pyrrolidone. Utilization of a technical scheme in the invention enables radial speed of the raw materials to distribute smoothly, longitudinal diffusion not to exist and each individual strataflo reactor to have isothermal strata flowing; according to the invention, no heating is needed in the strataflo reactors and it only needs to maintain thermal balance, thereby making a breakthrough to the conventional technical idea that increase of output requires increase of caliber or lengthening of tubes.
Description
Technical field
The present invention relates to a kind of chemical industry equipment and reaction method, relate in particular to a kind of production N-methyl-2-pyrrolidone reaction unit and reaction method.
Background technology
Traditional reactor is a double tube reactor, this reactor is that heat carrier pipeline chuck material pipe forms, thermal barrier circulates in chuck, this reactor is because of heat supply in the whole process of circulation of material, and the material caliber is generally less, if increase output then need increase caliber or the lengthening pipe, caliber is excessive certainly will to cause heating uneven if increase, have thermograde, reaction can not be carried out fully, transformation efficiency is lower; Increase falls in lengthening pipe then systemic resistance, and reactor volume increases.Therefore, production capacity is restricted, and easily causes wall stream material carbonization coking in the material stream passed reaction process.
Once used still formula amination reaction device abroad, this reactor is that the material pipe volution is coiled in the still, still has thermograde and coking phenomenon, and volume is also bigger, and such reactor production capacity is still restricted.
Summary of the invention
The present invention adopts tower structure, can hang on the steel construction by a plurality of placed in-line reactors, not limited by production capacity, but prolong operating period improves device running level.
Technical scheme provided by the invention is:
A kind of laminar flow formula is produced the reaction unit of N-methyl-2-pyrrolidone, and the discharge port of heat exchanger is connected with the inlet of laminar flow formula reactor.
Preferably, the feeding mouth of heat exchanger is connected with the outlet of mixing tank.
Preferably, be connected by mixing tank between the inlet of the discharge port of heat exchanger and laminar flow formula reactor.
Preferably, laminar flow formula reactor is outside equipped with thermofin.
Preferably, heat exchanger is outside equipped with thermofin.
Preferably, mixing tank is outside equipped with thermofin.
Preferably, a plurality of laminar flow formula reactors are connected in series.
A kind of laminar flow formula is produced the reaction method of N-methyl-2-pyrrolidone, and the material of producing N-methyl-2-pyrrolidone is heated, and insulation is reacted to reaction mass then, produces N-methyl-2-pyrrolidone finished product at last.
Preferably, before being heated, mixes the material of producing N-methyl-2-pyrrolidone.
Preferably, after being heated, mixes the material of producing N-methyl-2-pyrrolidone.
It is smooth to adopt technical scheme provided by the invention can realize that the raw material radial velocity distributes, there is not longitudinal diffusion, single laminar flow formula reactor isothermal laminar flow, in laminar flow formula reactor, need not heating, only need keep heat balance, break through the technical thought that original increase output need increase caliber or lengthening pipe.
Be difficult for coking in the laminar flow formula reactor, the thermal oil consumption is less, and laminar flow is stable, and logistics is more evenly distributed, and has good mass-and heat-transfer effect, and reactor pressure decrease is low, and prolong operating period improves device running level.
Because the amination building-up reactions of N-methyl-2-pyrrolidone is thermopositive reaction, this response characteristic provides necessary condition for using laminar flow formula reactor, only needs one-time heating just can satisfy the processing requirement of subsequent reactions to temperature of reaction in reaction process.
The condition of amination building-up reactions is exactly pressure, temperature, the residence time.After mixing of materials was even, the pressure of amination building-up reactions mainly provided by the charging volume pump.Temperature is thermopositive reaction because of the amination building-up reactions, and general lagging material can satisfy processing requirement.Can satisfy fully after once being added to temperature of reaction in the reaction process.The residence time is followed the principle of first outer, calculates the volume of reactor the needed residence time by production capacity and reaction, just can guarantee the residence time.Mixing of materials is even, and after pressure, temperature, the residence time guaranteed, transformation efficiency can not be affected, and experiment has also proved this point.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of laminar flow formula reactor.
The direction of arrow is the Flow of Goods and Materials direction among the heat exchanger 2 laminar flow formula reactors 3 mixing tank figure.
Embodiment
As shown in the figure, a kind of laminar flow formula is produced the reaction unit of N-methyl-2-pyrrolidone, is connected with the feeding mouth of heat exchanger by the outlet of mixing tank, and the discharge port of heat exchanger also is connected by a mixing tank with the feeding mouth of laminar flow formula reactor.There are three laminar flow formula reactors connected in series.
Laminar flow formula reactor is outside equipped with thermofin.Heat exchanger is outside equipped with thermofin.Mixing tank is outside equipped with thermofin.
The raw material of the amination building-up reactions of N-methyl-2-pyrrolidone squeezed in the mixing tank by the charging volume pump mix, enter heat exchanger heats then.After heat exchanger heats, mix once more.Enter laminar flow formula reactor then and under equilibrium temperature, carry out the amination building-up reactions, generate finished product N-methyl-2-pyrrolidone at last.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (10)
1. the reaction unit of a laminar flow formula production N-methyl-2-pyrrolidone is characterized in that the discharge port of heat exchanger is connected with the inlet of laminar flow formula reactor.
2. produce the reaction unit of N-methyl-2-pyrrolidone according to the described a kind of laminar flow formula of claim 1, it is characterized in that the feeding mouth of heat exchanger is connected with the outlet of mixing tank.
3. produce the reaction unit of N-methyl-2-pyrrolidone according to the described a kind of laminar flow formula of claim 1, it is characterized in that, be connected by mixing tank between the inlet of the discharge port of heat exchanger and laminar flow formula reactor.
4. according to the reaction unit of claim 1 or 3 described a kind of laminar flow formulas production N-methyl-2-pyrrolidones, it is characterized in that laminar flow formula reactor is outside equipped with thermofin.
5. according to the reaction unit of claim 1 or 2 described a kind of laminar flow formulas production N-methyl-2-pyrrolidones, it is characterized in that heat exchanger is outside equipped with thermofin.
6. produce the reaction unit of N-methyl-2-pyrrolidone according to the described a kind of laminar flow formula of claim 2, it is characterized in that mixing tank is outside equipped with thermofin.
7. produce the reaction unit of N-methyl-2-pyrrolidone according to the described a kind of laminar flow formula of claim 1, it is characterized in that a plurality of laminar flow formula reactors are connected in series.
8. the reaction method of a laminar flow formula production N-methyl-2-pyrrolidone is characterized in that, the material of producing N-methyl-2-pyrrolidone is heated, and insulation is reacted to reaction mass then, produces N-methyl-2-pyrrolidone finished product at last.
9. described according to Claim 8 a kind of laminar flow formula is produced the reaction method of N-methyl-2-pyrrolidone, it is characterized in that, mixes before the material of producing N-methyl-2-pyrrolidone is heated.
10. described according to Claim 8 a kind of laminar flow formula is produced the reaction method of N-methyl-2-pyrrolidone, it is characterized in that, mixes after the material of producing N-methyl-2-pyrrolidone is heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101343151A CN102249973A (en) | 2011-05-24 | 2011-05-24 | Reaction apparatus and reaction method for strataflo production of N-methyl-2-pyrrolidone |
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| CN2011101343151A CN102249973A (en) | 2011-05-24 | 2011-05-24 | Reaction apparatus and reaction method for strataflo production of N-methyl-2-pyrrolidone |
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| CN102249973A true CN102249973A (en) | 2011-11-23 |
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| CN2011101343151A Pending CN102249973A (en) | 2011-05-24 | 2011-05-24 | Reaction apparatus and reaction method for strataflo production of N-methyl-2-pyrrolidone |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1263523A (en) * | 1998-04-09 | 2000-08-16 | 潘托希米股份有限公司 | A process for production of N-methyl pyrrolidone |
| CN1384820A (en) * | 1999-10-27 | 2002-12-11 | 巴斯福股份公司 | Process for production of N-methyl pyrrolidone using gamma butyrolactone and mixed methylamines as starting materials |
| CN1802344A (en) * | 2003-06-09 | 2006-07-12 | 韩华石油化学株式会社 | Method for recovering toluene diamine from high boiling tar residue discharged from toluene diisocyanate preparation process |
-
2011
- 2011-05-24 CN CN2011101343151A patent/CN102249973A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1263523A (en) * | 1998-04-09 | 2000-08-16 | 潘托希米股份有限公司 | A process for production of N-methyl pyrrolidone |
| CN1384820A (en) * | 1999-10-27 | 2002-12-11 | 巴斯福股份公司 | Process for production of N-methyl pyrrolidone using gamma butyrolactone and mixed methylamines as starting materials |
| CN1802344A (en) * | 2003-06-09 | 2006-07-12 | 韩华石油化学株式会社 | Method for recovering toluene diamine from high boiling tar residue discharged from toluene diisocyanate preparation process |
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Application publication date: 20111123 |