A method and device for automatic dedusting of pyrolysis gas in the production of hexafluoropropylene

A technology of automatic dust removal and hexafluoropropylene, which is applied in the direction of separation methods, chemical instruments and methods, and separation of dispersed particles, which can solve the problems of manual and regular cleaning of dust, etc.

Active Publication Date: 2016-07-13
福建三农新材料有限责任公司
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Problems solved by technology

Although the use of two-stage dust removal can improve the dust removal effect of biomass gas, the dust obtained by gravity dust collector and cyclone dust collector needs to be manually cleaned regularly, and the equipment needs to be stopped when cleaning the dust

Method used

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  • A method and device for automatic dedusting of pyrolysis gas in the production of hexafluoropropylene

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Embodiment Construction

[0023] In order to describe the technical content, achieved goals and effects of the present invention in detail, the following descriptions will be made in conjunction with the embodiments and accompanying drawings.

[0024] The most critical idea of ​​the present invention is to replace the existing packed tower or simple cyclone separator with a high-efficiency cyclone separator. The water and dust separated by the high-efficiency cyclone separator can be automatically removed. Drainage and dust cleaning will not affect the normal operation of the equipment, ensure that the equipment does not stop, and avoid manual operation, prevent the leakage of cracked gas containing highly toxic octafluoroisobutene, realize automatic dust removal of cracked gas in the production of hexafluoropropylene, and ensure the safety of the production environment safety.

[0025] The automatic dedusting method of pyrolysis gas in the production of hexafluoropropylene provided by the present inve...

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Abstract

The invention provides an automatic dust collection method and a device for cracked gas in production of hexafluoropropylene. An automatic dust collection system in the automatic dust collection method comprises an automatic dust collection device, am automatic liquid drainage device, an automatic powder discharge device and a steam washing device of the cracked gas; two high-efficiency cyclone separators and a powder bin carry out automatic dust collection operation alternately; and the automatic dust collection device comprises a left dust collection system and a right dust collection system. An outlet of an external cracked gas quenching system is divided into two branches to be connected with inlets of the left dust collection system and the dust collection system respectively; outlets of the left dust collection system and the right dust collection system are connected to an inlet of an external cracked gas neutralizing system; and the bottoms of the left dust collection system and the right dust collection system are further connected with an external sewage tank. According to the automatic dust collection method and the device, the cracked gas entering the device is discharged after automatic dust collection, and pollution discharge is carried out automatically; the left dust collection system and the right dust collection system are used in turn to ensure normal operation of equipment; manual intervention is not required; and the method and the device are safe, stable and higher in dust collection efficiency.

Description

technical field [0001] The invention relates to a dust removal method and device in the production process of chemical raw materials, in particular to an automatic dust removal method and device for pyrolysis gas in the production of hexafluoropropylene. Background technique [0002] Hexafluoropropylene is a colorless and odorless gas at room temperature, slightly soluble in ethanol and ether, and flammable. Hexafluoropropylene is one of the basic raw materials in the organic fluorine industry, and is widely used in the production of fluororubber, fluoroplastics, perfluoropropylene oxide, heptafluoropropane, and fluorosurfactants. If the human body inhales more hexafluoropropylene for a short period of time, symptoms such as dizziness, weakness, and poor sleep will appear. The Chinese invention patent with the publication number CN03117869 discloses the production method of hexafluoropropylene as follows: A, configuration of mixed gas; B, preheating; C, thermal cracking; D,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D45/12
Inventor 徐万鑫徐美燚王建建
Owner 福建三农新材料有限责任公司
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