CN202478773U

CN202478773U - Tail gas recycling device after regeneration of active carbon catalyst

Info

Publication number: CN202478773U
Application number: CN2012200844355U
Authority: CN
Inventors: 林世和; 阮善禄
Original assignee: JIANGXI TIANTIAN CHEMICAL CO Ltd
Current assignee: JIANGXI TIANTIAN CHEMICAL CO Ltd
Priority date: 2012-03-08
Filing date: 2012-03-08
Publication date: 2012-10-10
Anticipated expiration: 2022-03-08

Abstract

The utility model relates to a tail gas recycling device after the regeneration of an active carbon catalyst. The device is characterized by comprising a regenerator (1), a thin-wall catcher (2) and a cloth-bag dust collector (3), wherein a tail gas outlet of the regenerator (1) is connected with an inlet of the thin-wall catcher (2) through a pipeline; and an outlet of the thin-wall catcher (2) is connected with an inlet of the cloth-bag dust collector (3) through a pipeline. The device provided by the utility model is provided with the catcher and the cloth-bag dust collector, the carbide impurity gases discharged after the catalyst regeneration are collected and recycled by the catcher, and the trace impurities are collected by the cloth-bag dust collector, thus the resource waste is reduced, and the environmental pollution is effectively avoided.

Description

The device for recovering tail gas of activated-carbon catalyst regeneration

Technical field

The utility model relates to a kind of device for recovering tail gas, is specifically related to a kind of device for recovering tail gas of activated-carbon catalyst regeneration, is mainly used in the tail gas recycle of the regeneration of gas phase chlorination activated-carbon catalyst in the fragrant nitrile chlorinated derivative process.

Background technology

Virtue nitrile chlorinated derivative (like termil, tetrachloro-p-phenylene's dimethoxy nitrile, tetrachloro phthalonitrile, Perchlorobenzonitrile etc.) is important Organic Chemicals, is widely used in the production of agricultural chemicals, coating.The preparation method of this compounds all adopts the gas phase chlorination production technology both at home and abroad at present, and the general active carbon that adopts one or more alkali metal of absorption or alkaline earth metal chloride is as catalyst in the production.Because amount of activated is bigger in such reaction, and easy inactivation, need to consider the regeneration problem of active carbon.

Lot of domestic and foreign document (like USP4485050, USP5789582, ZL200610039639.6) has been done play-by-play to this compounds gas phase chlorination technology, but announces very few to the renovation process of its catalyst.The general thermal regeneration technology that adopts makes the attached regeneration of active carbon desorption through heat temperature raising in special-purpose firing equipment in the industry; Since in the fragrant nitrile chlorinated derivative production process temperature high, chlorine and phase transition process arranged; Thereby being prone to enclose material and carbide impurity on the activated-carbon catalyst, Regeneration Treatment directly discharging meeting causes environment and has a strong impact on.

Summary of the invention

The purpose of the utility model is to overcome above-mentioned deficiency, and a kind of device for recovering tail gas that can effectively avoid the activated-carbon catalyst regeneration of environmental pollution is provided.

The purpose of the utility model is achieved in that a kind of device for recovering tail gas of activated-carbon catalyst regeneration; It comprises regenerator, thin-walled trap and sack cleaner; Said regenerator tail gas outlet links to each other with the import of thin-walled trap through pipeline, and said thin-walled trap outlet links to each other with the sack cleaner import through pipeline.

Compared with prior art, the beneficial effect of the utility model is:

The utility model, preparation trap and sack cleaner, the carbide foreign gas of emitting behind the catalyst regeneration is collected through trap and is reclaimed, and trace impurity is collected through sack cleaner again, not only reduces the wasting of resources, and effectively avoids environmental pollution.

Description of drawings

Fig. 1 is the structural representation of the device for recovering tail gas of the utility model activated-carbon catalyst regeneration.

Wherein:

The 1--regenerator;

2--thin-walled trap;

The 3--sack cleaner.

The specific embodiment

Referring to Fig. 1; The device for recovering tail gas of a kind of activated-carbon catalyst regeneration that the utility model relates to; It is made up of regenerator 1, thin-walled trap 2 and sack cleaner 3; Said regenerator 1 tail gas outlet links to each other with 2 imports of thin-walled trap through pipeline, and said thin-walled trap 2 outlets link to each other with sack cleaner 3 imports through pipeline.

After the activated-carbon catalyst regeneration in the regenerator 1, the carbide foreign gas of emitting gets into thin-walled trap 2 condensing and recycling, and final micro-carbide is collected through sack cleaner 3.

Claims

1. the device for recovering tail gas of activated-carbon catalyst regeneration; It is characterized in that: it comprises regenerator (1), thin-walled trap (2) and sack cleaner (3); The outlet of said regenerator (1) tail gas links to each other with thin-walled trap (2) import through pipeline, and said thin-walled trap (2) outlet links to each other with sack cleaner (3) import through pipeline.