Solvent oil-gas reclaiming device

Abstract

The invention discloses a solvent oil-gas recovering device, wherein the oil-gas can be desorbed and recovered under a lower vacuum condition completely. The invention adopts an oil-gas isolation technology of combination of a traditional condenser and a jacket cooling metal wire net membrane filter, thereby realizing composite multistage condensation reclaiming; and meanwhile a heater is arranged outside the lower part of an absorption tank, and the heater is controlled by a micro computer to heat the absorption tank after an adsorbing material is saturated under on-line monitoring, so that the technical problems that a drying vacuum pump has a lower vacuum degree and the absorbing material is desorbed incompletely are solved effectively. The whole set of the device provided by the invention has a high atomization integration level, a saved investment, security and reliability; the recovering effect of the absorbing material is higher than 99%; the oil-gas reclaiming rate is more than 99%; and the gas emission pollutant can reach the national standard completely.

Description

technical field [0001] The invention relates to a solvent oil gas recovery device, in particular to a solvent oil gas recovery device in volatile chemical solvents. Background technique [0002] In many aspects of daily life and chemical production and storage, the volatilization and waste of chemical solvents such as oil and gas and the hidden safety hazards caused by them have always been difficult technical problems for people to solve, especially some flammable, explosive, toxic, low boiling point and volatile compounds. How to manage and recycle them at low cost, safely and efficiently, so as to save resources and benefit from safety and environmental protection has always been the desire of people. At present, the general methods for recycling such solvents at home and abroad are as follows: [0003] 1. Condensation recovery method. This method needs to use a large number of traditional condensers, and the equipment occupies a large area, requires a large investm...

AI Technical Summary

Problems solved by technology

The condensation recovery efficiency of this method is low (less than 50%), regeneration and desorption is incomplete, which affects the recovery rate of solvent and the standard discharge of air

[0008] Since the above single process is difficult to meet environmental protection emission standards, solid usually adopts a combination of several processes, although the emission standards can be improved to varying degrees, but there are still some disadvantages to varying degrees

As disclosed in CN101259947 "gas station oil gas recovery device and its condensation adsorption integration method" and CN101402001 disclosed "oil gas recovery treatment device and condensation adsorption method thereof" both adopted the secondary condensation process and an integrated process method of an adsorber, An adsorber cannot guarantee the continuous work and operation of the entire device, that is, when the adsorbent in an adsorber reaches saturation, it cannot guarantee the adsorption work while desorbing

At the same time, there are disadvantages that the solvent cannot be completely desorbed and the adsorption material can be completely regenerated under the condition of low vacuum negative pressure.

Another example is CN102151414A disclosed "oil gas recovery device and adsorption and desorption switching device using condensation adsorption method". ice clogged passage

At the same time, due to the technical reasons of the dry vacuum pump itself, it is impossible to generate a high vacuum, so each regeneration and desorption is not complete, which will inevitably affect the adsorption of the next cycle, and even affect the recovery rate of the solvent and the standard discharge of air.

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