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Unit for preparing diester-based material, and system for preparing diester-based material, comprising same

A technology of production system and base material, applied in the field of diester-based material production system, can solve the problems such as no alternative scheme proposed, achieve the effect of reducing the amount of coolant and improving economic feasibility

Active Publication Date: 2021-11-26
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no alternatives have been proposed to utilize the heat processed in the process

Method used

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  • Unit for preparing diester-based material, and system for preparing diester-based material, comprising same
  • Unit for preparing diester-based material, and system for preparing diester-based material, comprising same
  • Unit for preparing diester-based material, and system for preparing diester-based material, comprising same

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0094] In the simulation using the above program, by coupling the figure 1 The three production units shown and image 3 A production system of one production unit (thus, a total of 4 production units coupled) is shown for simulation. Apply as shown in Table 1 below image 3 The sequence of production units shown, and the heat exchangers applied were also used for simulation as shown in Table 1 below.

[0095] The dicarboxylic acid is terephthalic acid, the primary alcohol is 2-ethylhexanol as a raw material, and the molar ratio of the two raw materials is set to 1:3. The temperature of the organic layer containing the primary alcohol discharged through the organic layer line 141 was set to 40° C., and the amount of coolant consumed in the condenser 15 and the amount of steam used in the entire production system were confirmed. Assuming that Comparative Example 1 is 100%, the values ​​in Table 1 below are relative values ​​(%).

[0096] [Table 1]

[0097]

[0098] Ref...

experiment example 2

[0100] In the simulation using the above program, by coupling the figure 1 The three production units shown and image 3 A production system of one production unit (thus, a total of 4 production units coupled) is shown for simulation. Apply as shown in Table 2 below image 3 The sequence of production units shown, and the heat exchangers applied were also used for simulation as shown in Table 2 below.

[0101] The dicarboxylic acid is terephthalic acid, the primary alcohol is 2-ethylhexanol as a raw material, and the molar ratio of the two raw materials is set to 1:3. Set the temperature of the organic layer containing the primary alcohol discharged through the organic layer line 141 to 40° C., and confirm the amount of coolant consumed in the condenser 15 and the energy consumed to produce utilities (high-temperature water or steam) in the entire process amount. Assuming that Comparative Example 1 is 100%, the values ​​in Table 2 below are relative values ​​(%).

[0102...

experiment example 3

[0106] In the simulation using the above program, by coupling the figure 1 Two or three production units shown and image 3 Production systems of one or two production units (thus, a total of 4 production units coupled) are shown for simulation. Apply as shown in Table 3 below image 3 The sequence of production units shown, and the heat exchangers applied were also used for simulation as shown in Table 3 below.

[0107] The dicarboxylic acid is terephthalic acid, the primary alcohol is 2-ethylhexanol as a raw material, and the molar ratio of the two raw materials is set to 1:3. The temperature of the organic layer containing the primary alcohol discharged through the organic layer line 141 was set to 40° C., and the amount of the coolant consumed in the condenser 15, the amount of steam entering the reaction vessel, the amount of steam used in the entire production system were confirmed. and the amount of energy consumed to produce utilities (high temperature water or ste...

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Abstract

The present invention relates to a continuous preparation system, and to a diester-based material preparation unit included therein, comprising: a reaction device for esterifying a dicarboxylic acid and a primary alcohol; a column for performing gas-liquid separation on a primary alcohol and water having flowed therein; a heat exchange device for recovering the heat of the gaseous line of the column; a condenser provided at the rear end of the heat exchange device so as to liquefy a mixture of gaseous primary alcohol and water; and a layer separator for separating a layer from the mixture of the liquefied primary alcohol and water, wherein the heat exchange device comprises a first heat exchanger for performing heat exchange with the material injection line of the reaction device, a second heat exchanger for performing heat exchange with a line through which a low-temperature stream flows in a process, and / or a second heat exchanger for performing heat exchange with the condensed water generated in the process. The present invention can reduce the amount of refrigerant, reduce the steam amount in a reactor and improve heat efficiency of the entire process.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2019-0080462 filed with the Korean Intellectual Property Office on July 4, 2019, the entire disclosure of which is incorporated herein by reference. technical field [0003] The present invention relates to a diester-based material production unit with an improved heat exchange system and a diester-based material production system comprising the diester-based material production unit. Background technique [0004] By the 20th century, phthalate-based plasticizers accounted for 92% of the world plasticizer market (Mustafizur Rahman and Christopher S. S. Brazel, "Plasticizer Market: Evaluation of Traditional Plasticizers and Research Trends to Address New Challenges," Progress in Polymer Science, 2004, Vol. 29, pp. 1223-1248 "(The plasticizer market: anassessment of traditional plasticizers and research trends to meet new challenges)), and is used t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/03C07C67/08C07C67/48C07C67/52C07C67/58C07C69/80C07C69/75
CPCC07C67/03C07C67/08C07C67/48C07C67/52C07C67/58C07C2601/14C07C69/80C07C69/75Y02P20/50B01D3/009B01D3/06Y02P20/10C07C69/82B01J2219/00033B01J2219/0004B01J2219/00306B01J2219/00495B01D17/0214B01D19/0036B01J19/0013B01J19/245B01J19/2465B01J2219/00108C07C67/475B01J2219/00087
Inventor 郑在勋李成圭秋渊旭李硕九
Owner LG CHEM LTD
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