Polymerization inhibitor for 1,3-butadiene and a method of inhibiting polymerization of 1,3-butadiene by imputing thereof

A technology of polymerization inhibitor and butadiene, applied in chemical instruments and methods, excavation, hydrocarbons, etc., can solve the problems of factory operation interruption, equipment explosion, huge factory cost, etc., and achieve excellent polymerization inhibition effect, Stable operation, excellent fouling prevention effect

Inactive Publication Date: 2008-01-16
YEOCHUN NCC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, unless the conventional technical problems described above are overcome, stable operation cannot be expected until the scheduled maintenance interval
[0013] Moreover, due to the large amount of organic fouling, causing unexpected interruption of plant operation, huge costs and even the risk of explosion of equipment can be incurred in the plant
Because of the interruption of the operation of the plant for the production of 1,3-butadiene, the operating rate of each upstream and downstream plant in the process flow diagram of the petrochemical industry has been greatly affected

Method used

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  • Polymerization inhibitor for 1,3-butadiene and a method of inhibiting polymerization of 1,3-butadiene by imputing thereof
  • Polymerization inhibitor for 1,3-butadiene and a method of inhibiting polymerization of 1,3-butadiene by imputing thereof
  • Polymerization inhibitor for 1,3-butadiene and a method of inhibiting polymerization of 1,3-butadiene by imputing thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Relative to the total amount of C4 mixture introduced, 30 ppm of polymerization inhibitor containing 15wt% of TBC, 75wt% of DEHA and 10wt% of IBA enters the extractive distillation pump including liquid phase and gas phase through the feed pump for polymerization inhibitor And periodically evaluate to check the condition and amount of polymer accumulation. The results are shown in Table 1.

Embodiment 2

[0074]Except that the composition and mixing ratio of the polymerization inhibitor were changed so that the polymerization inhibitor contained 15 wt% TBC, 75 wt% DEHA, and 10 wt% IPA, the state and amount of polymer accumulation were periodically checked in the same manner as in Example 1. The results are shown in Table 1.

Embodiment 3

[0076] Except that the composition and mixing ratio of the polymerization inhibitor were changed so that the polymerization inhibitor contained 15 wt% BHT, 75 wt% DEHA, and 10 wt% IPA, the condition and amount of polymer accumulation were periodically checked in the same manner as in Example 1. The results are shown in Table 1.

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Abstract

Disclosed are a polymerization inhibitor of 1,3-butadiene comprising alkylphenol based anti- fouling agent containing one to two hydroxyl groups, amine based anti-fouling agent and organic solvent and a method of inhibiting polymerization of 1,3-butadiene by using the above inhibitor. The polymerization inhibitor and the method of inhibiting polymerization of 1,3-butadiene of the present invention with excellent inhibition of polymerization and prevention of fouling make it possible to extract and distill 1,3-butadiene product with high purity by inhibiting poly not merization of 1,3-butadiene in a wide range of temperature from liquid phase to gaseous phase, prevent operational stoppage of a factory for manufacturing 1,3-butadiene in emergency possible to occur due to fouling, and to ensure stable operation thereof for a long term.

Description

Technical field [0001] The present invention relates to a polymerization inhibitor for 1,3-butadiene and a method for inhibiting the polymerization reaction of 1,3-butadiene by introducing the polymerization inhibitor, and more specifically, to a new kind of A polymerization inhibitor for preventing and preventing the generation of fouling during the preparation of 1,3-butadiene, and a method for inhibiting the polymerization reaction of 1,3-butadiene by introducing the above-mentioned polymerization inhibitor into an extractive distillation column. Background technique [0002] In factories producing styrene monomer and isoprene, as well as mixed C4 raffinate and used as a raw material for a variety of synthetic resins, the product is unsaturated hydrocarbons. It is also prone to polymerization during normal operation and serious problems such as fouling of organic substances occur. For example, it is known that the fouling generated in the extractive distillation tower can bloc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/38
CPCC08F36/06C07C7/20C07C11/167C08F2/38E02B3/129E02B3/14E02B3/16E02D17/205E02D2600/20
Inventor 沈映宇林成焕李春宰安汉哲
Owner YEOCHUN NCC
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