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Regeneration method of filler of styrene polymerization inhibitor (TBC) removal tower

A technology of styrene and polymerization inhibitor, which is applied in the field of regeneration of styrene polymerization inhibitor removal tower packing, can solve problems such as reducing work efficiency, and achieve the effects of improving efficiency, improving adsorption effect, and increasing practicability

Active Publication Date: 2022-02-25
宁波利万新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the process of large-capacity removal, repeated replacement of packing will obviously greatly reduce the overall work efficiency. Therefore, we propose a regeneration of packing method to effectively solve some problems existing in the prior art

Method used

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  • Regeneration method of filler of styrene polymerization inhibitor (TBC) removal tower
  • Regeneration method of filler of styrene polymerization inhibitor (TBC) removal tower
  • Regeneration method of filler of styrene polymerization inhibitor (TBC) removal tower

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Embodiment 1

[0051] see Figure 1-9 , a kind of styrene polymerization inhibitor (TBC) removes the regeneration method of tower filler, comprises the following steps:

[0052] S1. Filling: through the filling pipe 2 installed on the outer end wall above the tank body 1, fill a plurality of collision-removing balls 4 on the barrier grid 3;

[0053] S2. Feeding: Inject the styrene solution containing the polymerization inhibitor into the bottom end of the tank body 1 through the feed pipe 5 installed on the outer end wall below the tank body 1;

[0054] S3, TBC removal: the liquid-phase styrene containing TBC passes through the Al2O3 filler layer, TBC is adsorbed on the surface of the filler, and styrene is purified;

[0055] S4, regeneration: 1) adsorption: after running for a period of time, the Al2O3 filler is gradually saturated, and the purification effect of styrene becomes poor, so it needs to be regenerated. At this time, the styrene in the absorption tower needs to be emptied;

[...

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Abstract

The invention discloses a regeneration method of a filler of a styrene polymerization inhibitor (TBC) removal tower, and belongs to the field of chemical production, the method for replacing the filler on a traditional filler tower is improved, a hot nitrogen purging analysis method is adopted for regeneration, and nitrogen at a certain temperature and flow passes through the filler tower; the polymerization inhibitor TBC adsorbed on the filler is blown away together with styrene so that the saturation degree of the filler in the packed tower is reduced, the monomer styrene containing the polymerization inhibitor entering subsequently can be effectively adsorbed, the replacement of the tower filler is reduced, the efficiency of high-capacity removal operation is improved, meanwhile, the hot nitrogen carrying the styrene and the polymerization inhibitor TBC is condensed and separated by the condenser, and thus the polymerization inhibitor TBC is desorbed and regenerated, the polymerization inhibitor TBC is reutilized, and the concept of environment-friendly production is met.

Description

technical field [0001] The invention relates to the field of chemical production, more specifically, to a regeneration method for removing a styrene polymerization inhibitor (TBC) from a tower filler. Background technique [0002] Polystyrene (Polystyrene, abbreviated as PS) refers to a polymer synthesized by free radical addition polymerization of styrene monomer. Its chemical formula is (C8H8)n. It is a colorless and transparent thermoplastic with light weight and low price. Inexpensive, low water absorption, good coloring, dimensional stability, good electrical properties, transparent products, easy processing and other advantages, it is widely used in many fields such as modern materials and modern daily necessities. [0003] In the production process of styrene, the raw material of polystyrene, in order to prevent the self-polymerization of styrene during storage and transportation, a certain amount of polymerization inhibitor TBC is usually added, and at the same time,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D15/20B01J20/08B01J20/34
CPCB01D15/203B01J20/08B01J20/3433B01J20/3483Y02W30/62
Inventor 陈洪辉陈赟苏灿孙号飞盖尊波陆好皓林远亮陈晶晶
Owner 宁波利万新材料有限公司
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