Recycling device for solvents with high viscosity in dangerous waste treatment field, skid-mounted structure and method thereof

Abstract

The invention provides a recycling device for solvents with high viscosity in dangerous waste treatment field, a skid-mounted structure and a method thereof. The recycling device comprises a rectifying tower; a gaseous phase outlet of the rectifying tower is connected with a condenser; the condenser is connected with a reflux ratio control device; one outlet of the reflux ratio control device is connected with a liquid backflow inlet while the other outlet is respectively connected with an effluent collecting device, a transition distilling collecting device and a product collecting device; the bottom of the rectifying tower is directly arranged on a rectifying kettle; a falling-film evaporator is arranged on the rectifying kettle; an outlet of the rectifying kettle is respectively connected with the falling-film evaporator and an evaporator through pipelines; the evaporator is connected with the condenser; the condenser is connected with the product collecting device. Such a set of device can be used for separating and recycling different solvents with high viscosity from effluents from different sources or containing different components; the materials with high viscosity can beeffectively prevented from adhering to the interior of the device and consequently reducing the separation efficiency and blocking the equipment pipelines; the skid-mounted structure of the recyclingdevice can be conveniently mounted, dismounted and moved; the equipment arrangement is intensive; less area is occupied.

Description

technical field [0001] The invention belongs to the technical field of hazardous waste treatment, and in particular relates to a high-viscosity solvent recovery device in the field of hazardous waste treatment, its skid-mounted structure and method. Background technique [0002] Hazardous waste refers to hazardous waste, which refers to waste with hazardous characteristics that is included in the national hazardous waste list or identified according to the national hazardous waste identification standards and identification methods. In industrial production, a large amount of hazardous waste is often produced, including solid waste and liquid waste. Waste, liquid waste is mainly the waste liquid discharged by industry, and the waste liquid often contains a large amount of liquid that can be used as a solvent. These solvents still have usable value. If they are directly disposed of as waste, it will cause a waste of resources. It is necessary to recycle it. According to the ...

AI Technical Summary

Problems solved by technology

Some solvents in the industry have relatively high viscosity, such as propylene glycol methyl ether acetate, propylene glycol monoether acetate, etc. When separating and recovering such solvents, due to their high viscosity, their fluidity is poor, the surface tension of the solvent is large, and it is easy to Adhesion in separation equipment, thus causing great difficulty in separating and recovering such solvents from hazardous waste

Therefore, there is a lack of devices in the prior art that can separate and recover different high-viscosity solvents from waste liquids of different sources and different compositions using a set of devices

[0004] In addition, most of the hazardous waste solvent recovery and treatment devices in the prior art are installed in fixed positions, and the installation, connection, and disassembly of various equipment are very inconvenient. When the waste liquid is processed, the waste liquid needs to be transported to a fixed location for processing, and the operation is also difficult. Very inconvenient, and the installation of each device in the device is scattered, occupying a large area

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