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

A polymerization inhibitor and butadiene technology, applied in chemical instruments and methods, excavation, hydrocarbons, etc., can solve problems such as equipment explosion, factory operation interruption, huge factory costs, etc., and achieve stable operation and excellent fouling prevention. , Excellent polymerization inhibition effect

Inactive Publication Date: 2012-05-23
YEOCHUN NCC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[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

[0074]Relative to the total amount of introduction of the C4 mixture, 30 ppm of a polymerization inhibitor comprising 15 wt% of TBC, 75 wt% of DEHA and 10 wt% of IBA was passed through the feeding pump for the polymerization inhibitor into the extractive distillation pump comprising liquid and gas phases and is periodically assessed to detect the condition and amount of polymer buildup. The results are shown in Table 1.

Embodiment 2

[0076] In addition to changing the composition and mixing ratio of the polymerization inhibitor so that the polymerization inhibitor contains 15 wt% of TBC, 75 wt% of DEHA and 10 wt% of IPA, the condition and amount of polymer accumulation were periodically detected in the same manner as in Example 1 . The results are shown in Table 1.

Embodiment 3

[0078] The condition and amount of polymer accumulation were periodically checked in the same manner as in Example 1, except that the composition and mixing ratio of the polymerization inhibitor was changed so that the polymerization inhibitor contained 15 wt% of BHT, 75 wt% of DEHA and 10 wt% of IPA. 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 kind of polymerization inhibitor of 1,3-butadiene and the method for inhibiting the polymerization reaction of 1,3-butadiene by introducing the polymerization inhibitor, and more specifically, relate to a kind of new used in A polymerization inhibitor for preventing and preventing fouling during the preparation of 1,3-butadiene, and a method for inhibiting the polymerization of 1,3-butadiene by introducing the above polymerization inhibitor into an extractive distillation tower. Background technique [0002] In plants that manufacture styrene monomer and isoprene and 1,3-butadiene that is part of the mixed C4 raffinate and used as a raw material for various synthetic resins, the products are unsaturated hydrocarbons that even It is also prone to polymerization and serious problems such as fouling of organic matter occur during normal operation. For example, fouling from extractive distillation columns is known to clo...

Claims

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Application Information

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Patent Type & Authority Patents(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