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Energy saving reforming system of rectifying tower in production of ethyl acetate

An energy-saving transformation, ethyl acetate technology, applied in the preparation of carboxylate, distillation adjustment/control, fractionation and other directions, can solve the problems of increased energy consumption, low separation rate of methyl acetate, etc. quality, the effect of improving the ethyl ester content

Active Publication Date: 2013-09-04
谦信化工集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention aims to overcome the deficiencies of the prior art, especially for a rectification column energy-saving transformation that can solve the problems of low separation rate of methyl acetate in the traditional ethyl ester production process, solve the problems of increased energy consumption, and realize energy-saving production. system

Method used

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  • Energy saving reforming system of rectifying tower in production of ethyl acetate
  • Energy saving reforming system of rectifying tower in production of ethyl acetate
  • Energy saving reforming system of rectifying tower in production of ethyl acetate

Examples

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Embodiment 1

[0022] The specific scheme of this embodiment is: as figure 2 As shown, a rectification tower energy-saving transformation system in the production of ethyl acetate includes a rectification tower 6, and a tower top condenser device 1, a tower top cooler 2, and a condensate are connected in series on the top of the rectification tower in sequence. Collection tank 3, reflux pump 4, tower top phase separator 5, the gaseous phase and the material with methyl ester from the top of the rectification tower pass through the top condenser device, tower top cooler, condensate collection tank, reflux pump and The top phase separator is then returned to the top of the rectification column. The top condenser device is composed of two sequentially connected top condensers. Each top condenser cools the gas phase material through water cooling and controls the temperature of the gas phase material; The tower top condenser is respectively connected with the tower top cooler, and the first tow...

Embodiment 2

[0030] This embodiment 2 is improved on the basis of embodiment 1. Specifically, the two tower top condensers in embodiment 1 are changed into three tower top condensers, and the condensate timing extraction port is set at the third tower top. On the condenser, the rectification tower energy-saving transformation system in the production of ethyl acetate in this embodiment 2 is also a set of 50,000 t / a ethyl acetate rectification tower system.

[0031] The condensing area in the prior art is 160m 2 The single overhead condenser of the tower is replaced by three overhead condensers, and the condensation area of ​​the three overhead condensers is 120 m 2 、40m 2 and 20 m 2 .

[0032]By controlling the amount of circulating condensed water in each overhead condenser, the temperature of the condensate at the outlet of the first overhead condenser is between 68°C and 72°C, and the temperature of the liquid at the outlet of the second overhead condenser is controlled at 65°C to...

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Abstract

The invention discloses an energy saving reforming system of a rectifying tower in the production of ethyl acetate. The system is characterized in that: a tower top condenser apparatus, a tower top cooler, a condensate liquid collection tank, a reflux pump and a tower top phase separator which are connected in series are arranged on the top of the rectifying tower in order; a gaseous material with methyl esters, which is from the top of the rectifying tower, goes through the tower top condenser apparatus, the tower top cooler, the condensate liquid collection tank, the reflux pump and the tower top phase separator in order and is refluxed to the inside of the rectifying tower top; the tower top condenser apparatus comprises at least two tower top condensers which are connected in order; each tower top condenser cools the gaseous material and controls the temperature of the gaseous material through water cooling; the tower top condensers are respectively connected with the tower top cooler; the tower top condensers are mutually connected with each other; the last tower top condenser is provided with a condensate liquid timing picking port; and heat exchange areas of the tower top condensers are gradually reduced in order. The system obviously reduces the content of the methyl esters in refluxed esters, the gas load of the rectifying tower and the energy consumption of the whole production system.

Description

technical field [0001] The invention relates to an energy-saving production transformation system of a rectification tower in ethyl acetate, in particular to transform the condensation system of the ethyl acetate rectification tower, transforming a single tower top condenser into multiple tower top condensers, and the improved Multiple tower top condensers are connected in sequence to realize staged condensation and staged recovery of gas phase materials. The system controls the temperature of the condensate by controlling the flow of circulating cooling water, so that the gas phase components are condensed in stages, and at the same time, the material rich in methyl ester components is extracted in the last stage overhead condenser to control the circulation in the system. amount of methyl ester. Background technique [0002] Ethyl acetate is one of the most widely used fatty acid esters. It has excellent solubility and is a fast-drying industrial solvent. It is widely use...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D3/14B01D3/32B01D3/42C07C69/14C07C67/54
CPCY02P20/10Y02P20/50
Inventor 赵楚榜于冬娥朱宏文汪尚飞张浩宁
Owner 谦信化工集团有限公司
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