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Oil-bath type reactor used for preparing NMP

A technology of reactor and oil bath, which is applied in the field of NMP preparation, can solve the problems of unstable parameters such as bed temperature, uneven heating of materials, and affecting reaction conversion rate, etc., and achieves a compact structure, increased space, and small footprint. Effect

Active Publication Date: 2013-10-16
BINZHOU YUNENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reactor adopts a casing heating method, which makes the material heated unevenly, and the material pipeline and heating pipeline in the reactor are long, resulting in rapid heat dissipation, which not only makes the bed temperature and other parameters unstable, but also affects the reaction. The conversion rate and the reaction conversion rate are low, and cause waste of heat energy, high energy consumption and increased cost
The material pipeline has multiple U-shaped corners, and the resistance of the material at the corners is relatively large, resulting in a certain amount of energy consumption

Method used

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  • Oil-bath type reactor used for preparing NMP
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] An oil bath reactor for preparing NMP, the reactor is a hollow cylinder, and a hollow interlayer 3 is formed between the inner wall 1 and the outer wall 2 of the reactor; the interlayer 3 has a built-in vertical coil structure reaction bed 4; The upper part of the reactor is provided with a heat transfer oil outlet 5 communicated with the interlayer 3 and a material inlet 6 communicated with the reaction bed 4; Material outlet 8; the reactor is connected with a control system.

[0023] The reaction bed 4 of the vertical coil structure is composed of a spiral material coil 9 .

[0024] The interlayer 3 is provided with a supporting structure.

[0025] The support structure is a coil support plate 10, and the coil support plate 10 cooperates with the material coil 9 of the reaction bed.

[0026] One side of the coil support plate 10 is provided with a plurality of support holes 11 corresponding to the material coil 9 , and the other side is provided with a plurality of ...

Embodiment 2

[0033] An oil bath reactor for preparing NMP, the reactor is a hollow cylinder, and a hollow interlayer 3 is formed between the inner wall 1 and the outer wall 2 of the reactor; the interlayer 3 has a built-in vertical coil structure reaction bed 4; The upper part of the reactor is provided with a heat transfer oil outlet 5 communicated with the interlayer 3 and a material inlet 6 communicated with the reaction bed 4; Material outlet 8; the reactor is connected with a control system.

[0034] The reaction bed 4 of the vertical coil structure is composed of a spiral material coil 9 .

[0035] The interlayer 3 is provided with a supporting structure.

[0036] The support structure is a coil support plate 10, and the coil support plate 10 is matched with the material coil 9 of the reaction bed.

[0037] One side of the coil support plate 10 is provided with a plurality of support holes 11 corresponding to the material coil 9 , and the other side is provided with a plurality of ...

Embodiment 3

[0044] An oil bath reactor for preparing NMP, the reactor is a hollow cylinder, and a hollow interlayer 3 is formed between the inner wall 1 and the outer wall 2 of the reactor; the interlayer 3 has a built-in vertical coil structure reaction bed 4; The upper part of the reactor is provided with a heat transfer oil outlet 5 communicated with the interlayer 3 and a material inlet 6 communicated with the reaction bed 4; Material outlet 8; the reactor is connected with a control system.

[0045] The reaction bed 4 of the vertical coil structure is composed of a spiral material coil 9 .

[0046] The interlayer 3 is provided with a supporting structure.

[0047]The support structure is a coil support plate 10, and the coil support plate 10 cooperates with the material coil 9 of the reaction bed.

[0048] One side of the coil support plate 10 is provided with a plurality of support holes 11 corresponding to the material coil 9 , and the other side is provided with a plurality of h...

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Abstract

The invention specifically relates to an oil-bath type reactor used for preparing NMP, which belongs to the technical field of preparation of NMP. The oil-bath type reactor used for preparing NMP is a hollow circular column; a hollow interlayer is formed between the inner wall and the outer wall of the reactor; a reaction bed of a vertical coil pipe structure is built in the interlayer; the upper part of the reactor is provided with a heat-conduction oil outlet communicated with the interlayer and a material inlet communicated with the reaction bed, the lower part of the reactor is provided with a heat-conduction oil inlet communicated with the interlayer and a material outlet communicated with the reaction bed, and the reactor is connected with a control system. The reactor provided by the invention has the advantages of reasonable design, a compact structure, a small floor space, full reaction and a high conversion rate.

Description

technical field [0001] The invention belongs to the technical field of preparing NMP, and in particular relates to an oil bath reactor for preparing NMP. Background technique [0002] NMP is an organic compound with the Chinese name of N-methylpyrrolidone. It is widely used in the refining of high-grade lubricating oil, the synthesis of polymers, insulating materials, pesticides, pigments, cleaning agents, etc. It is used as acetylene and acetylene in the natural gas production of acetylene industry. Absorbent for higher alkynes. Wide range of applications and high demand. [0003] In the prior art, the reaction bed in the reactor for preparing NMP is a horizontal structure, and the material pipelines are intricately intersected and staggered, resulting in a large volume of the equipment and a large floor area, which increases the investment cost of the equipment and the investment in the plant. The bulky equipment increases the difficulty of equipment maintenance. The re...

Claims

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Application Information

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IPC IPC(8): B01J14/00C07D207/267
Inventor 吴兴龙徐宜彬
Owner BINZHOU YUNENG CHEM
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