CN216755429U - Energy-saving heat exchange system of methyl ethyl ketone device - Google Patents
Energy-saving heat exchange system of methyl ethyl ketone device Download PDFInfo
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- CN216755429U CN216755429U CN202220046736.2U CN202220046736U CN216755429U CN 216755429 U CN216755429 U CN 216755429U CN 202220046736 U CN202220046736 U CN 202220046736U CN 216755429 U CN216755429 U CN 216755429U
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Abstract
The utility model relates to a methyl ethyl ketone device energy saving and consumption reduction's technical field specifically is a methyl ethyl ketone device energy-conserving heat transfer system. The system comprises a sec-butyl alcohol tower, a feeding heater of a de-butenification tower, a condenser at the top of the sec-butyl alcohol tower, a reflux tank and a reflux pump which are sequentially communicated through pipelines. The material feeding heater of the sec-butyl alcohol tower heats the material fed into the sec-butyl alcohol tower by utilizing the latent heat of the steam at the top of the sec-butyl alcohol tower, and the condenser at the top of the sec-butyl alcohol tower further cools the material condensed by the material feeding heater of the sec-butyl alcohol tower so as to meet the product conveying requirement. The latent heat of the steam at the top of the sec-butyl alcohol tower is recovered, and the energy consumption of the circulating water and the steam of the butadiene removing tower is reduced; the sec-butyl alcohol tower and the feeding heater of the butylene removing tower are arranged closely to avoid overlarge pressure drop of the pipeline. Therefore, the utility model can effectively reduce the consumption of the steam in the tower kettle and the consumption of the circulating water required by the condensation of the steam on the tower top, and avoid the energy loss, thereby realizing the aim of energy conservation.
Description
Technical Field
The utility model relates to the technical field of energy conservation and consumption reduction of chemical equipment, in particular to an energy-saving heat exchange system of a methyl ethyl ketone device.
Background
With the gradual popularization of the carbon four-raw material deep processing device, the productivity utilization rate is not high, and if the energy consumption can be reduced, a stronger cost competitive advantage can be obtained in the market. The methyl ethyl ketone is one of the deep processing of the four carbon raw materials, and has necessary significance in energy conservation and consumption reduction.
In the traditional rectification process, a steam reboiler is generally adopted as a heat source, and the steam consumption is large. Therefore, how to effectively utilize the heat energy of the system better becomes the key point of attention of the process production technology in ensuring the stable operation of the device and reducing the energy consumption as much as possible.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model aims to provide an energy-saving heat exchange system for a methyl ethyl ketone device.
In order to achieve the purpose, the utility model provides the following technical scheme:
an energy-saving heat exchange system of a methyl ethyl ketone device comprises a sec-butyl alcohol tower, a feed heater of a decamethylene chloride tower, a condenser at the top of the sec-butyl alcohol tower, a reflux tank and a reflux pump which are sequentially communicated through pipelines; the upper part of one end of the reflux tank is provided with a reflux tank feeding hole, the lower part of the other end of the reflux tank is provided with a reflux tank discharging hole, and a reflux tank discharging hole pipeline is communicated with an inlet of a reflux pump; the inlet end of a feed heater of the polybutene removing tower is communicated with the top of the sec-butyl alcohol tower, and latent heat of steam at the top of the sec-butyl alcohol tower is utilized; and the condenser at the top of the sec-butyl alcohol tower is communicated between the feeding heater of the decamethylene chloride tower and the reflux tank, and the material condensed by the feeding heater of the decamethylene chloride tower is further cooled.
Further, the feeding heater of the polybutene removing tower is horizontal, and the condenser at the top of the sec-butyl alcohol tower is horizontal.
Further, the sec-butyl alcohol tower is arranged close to the feed heater of the butylene removing tower.
Furthermore, a bypass is arranged between the sec-butyl alcohol tower and a condenser at the top of the sec-butyl alcohol tower to adjust the difference of heat.
Compared with the prior art, the utility model has the beneficial effects that: the utility model discloses an energy-conserving piece-rate system is equipped with the decamethylene tower feeding heater between sec butyl alcohol tower and top of the tower condenser for the heating of decamethylene tower feeding reaches the purpose of saving steam and reduction circulating water energy consumption. In order to adjust the difference of the required heat quantity between the two, a bypass is arranged for adjustment. The whole scheme has obvious energy-saving effect.
Drawings
The utility model is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
the label in the figure is 1-sec-butyl alcohol tower, 2-butylene removing tower feeding heater, 3-sec-butyl alcohol tower top condenser, 4-reflux tank and 5-reflux pump.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments and the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention.
As shown in fig. 1, the energy-saving heat exchange system of the methyl ethyl ketone device in the embodiment includes a sec-butyl alcohol tower 1, a decamethylene-ethyl tower feeding heater 2, a sec-butyl alcohol tower top condenser 3, a reflux tank 4 and a reflux pump 5, which are sequentially communicated by pipelines; the upper part of one end of the reflux tank 4 is provided with a reflux tank feeding hole, the lower part of the other end is provided with a reflux tank discharging hole, and a discharging hole pipeline of the reflux tank 4 is communicated with an inlet of a reflux pump 5; the inlet end of a feed heater 2 of the polybutene removing tower is communicated with the top of the sec-butyl alcohol tower 1, and latent heat of steam at the top of the sec-butyl alcohol tower 1 is utilized; the sec-butyl alcohol tower top condenser 3 is communicated between the feeding heater 2 of the decamethylene chloride tower and the reflux tank 4, and the material condensed by the feeding heater 2 of the decamethylene chloride tower is further cooled.
The feeding heater 2 of the decamethylene chloride tower is horizontal, the condenser 3 at the top of the sec-butyl alcohol tower is horizontal, the sec-butyl alcohol tower 1 and the feeding heater 2 of the decamethylene chloride tower are arranged in close proximity, and a bypass is arranged between the sec-butyl alcohol tower 1 and the condenser 3 at the top of the sec-butyl alcohol tower for adjusting the heat difference.
The concrete during operation:
firstly, after the synthesized sec-butyl alcohol raw material is primarily rectified by an ether removing tower, an ether azeotrope escapes from the tower top to obtain a primary product mainly containing sec-butyl alcohol and heavy matters.
And in the second step, the primary product containing sec-butyl alcohol and heavy matters is rectified by a sec-butyl alcohol tower 1 to separate out sec-butyl alcohol as a gas phase, and the product mainly escapes from the tower top, so that the energy consumption in the process is higher. The operation pressure of the sec-butyl alcohol overhead steam is 0.02MPaG, and the overhead temperature is controlled to be about 104 ℃.
And thirdly, utilizing the latent heat of the tower top steam of the sec-butyl alcohol tower 1 and indirectly exchanging heat through a feeding heater 2 of the decamethylene chloride tower, so that the purpose of condensing the tower top steam is achieved, and the raw material of the decamethylene chloride tower which needs steam heating originally is increased in temperature to a certain extent, thereby effectively utilizing the heat energy.
Finally, the condensed sec-butyl alcohol material is further cooled to the temperature required by the product by circulating water, and a part of the condensed sec-butyl alcohol material is conveyed to be used as the reflux liquid circulation of the tower and a part of the condensed sec-butyl alcohol material is conveyed to be used as the product to be conveyed to a tank area by the collection of a reflux tank and the conveying of a reflux pump.
The novel energy-saving separation system is provided with the feeding heater of the decamethylene column between the sec-butyl alcohol column and the overhead condenser, is used for heating the feeding of the decamethylene column, and achieves the purposes of saving steam and reducing the energy consumption of circulating water. In order to adjust the difference of the required heat quantity between the two, a bypass is arranged for adjustment. The whole scheme has obvious energy-saving effect.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the present invention as defined in the accompanying claims.
Claims (4)
1. An energy-saving heat exchange system of a methyl ethyl ketone device comprises a sec-butyl alcohol tower (1), a feeding heater (2) of a polybutene removing tower, a condenser (3) at the top of the sec-butyl alcohol tower, a reflux tank (4) and a reflux pump (5) which are sequentially communicated through pipelines; the device is characterized in that the upper part of one end of the reflux tank (4) is provided with a reflux tank feeding hole, the lower part of the other end is provided with a reflux tank discharging hole, and a pipeline of the discharging hole of the reflux tank (4) is communicated with an inlet of a reflux pump (5); the inlet end of a feed heater (2) of the polybutene removing tower is communicated with the top of the sec-butyl alcohol tower (1), and latent heat of steam at the top of the sec-butyl alcohol tower (1) is utilized; the sec-butyl alcohol tower top condenser (3) is communicated between the feeding heater (2) of the polybutene tower and the reflux tank (4), and the material condensed by the feeding heater (2) of the polybutene tower is further cooled.
2. An energy-saving heat exchange system for a methyl ethyl ketone device according to claim 1, wherein the feed heater (2) of the de-butenizer is horizontal, and the condenser (3) at the top of the sec-butyl alcohol tower is horizontal.
3. An energy-saving heat exchange system for a methyl ethyl ketone device according to claim 1, wherein the sec-butyl alcohol tower (1) is arranged close to the feed heater (2) of the polybutene tower.
4. An energy-saving heat exchange system for a methyl ethyl ketone device according to claim 1, wherein a bypass is arranged between the sec-butyl alcohol tower (1) and the sec-butyl alcohol tower top condenser (3) to adjust the difference of heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220046736.2U CN216755429U (en) | 2022-01-10 | 2022-01-10 | Energy-saving heat exchange system of methyl ethyl ketone device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220046736.2U CN216755429U (en) | 2022-01-10 | 2022-01-10 | Energy-saving heat exchange system of methyl ethyl ketone device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216755429U true CN216755429U (en) | 2022-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220046736.2U Active CN216755429U (en) | 2022-01-10 | 2022-01-10 | Energy-saving heat exchange system of methyl ethyl ketone device |
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| Country | Link |
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| CN (1) | CN216755429U (en) |
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2022
- 2022-01-10 CN CN202220046736.2U patent/CN216755429U/en active Active
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