Simulation device for soil in-situ thermal desorption remediation and application

A simulation device, thermal desorption technology, applied in the restoration of contaminated soil, etc., can solve the problems of less research, small scale, and data that are difficult to meet the thermodynamic application research of in-situ thermal desorption restoration process

Pending Publication Date: 2020-11-06
国环危险废物处置工程技术(天津)有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In foreign countries, this type of technology evolved from engineering practice, and there are few related studies; in China, the research on this technology is still in its infancy, and the equipment used in the early research on in-situ thermal desorption repair technology at home and abroad is relatively simple , the scale is small, and the obtained data are difficult to meet the thermodynamic application research of in-situ thermal desorption repair process
In addition, in-situ thermal desorption remediation technology consumes a lot of energy, and parameter control in remediation practice is of great significance to reduce repair costs. At present, there is a lack of equipment for exploring the engineering parameters of in-situ thermal desorption remediation technology. It is determined that it will inevitably affect the restoration effect or lead to an increase in restoration costs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Simulation device for soil in-situ thermal desorption remediation and application
  • Simulation device for soil in-situ thermal desorption remediation and application
  • Simulation device for soil in-situ thermal desorption remediation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1, such as figure 1As shown, this embodiment provides a thermodynamic research device for simulating the in-situ thermal desorption repair process of soil, including an upper cover 1, an upper insulation layer 2, an open cylindrical sand tank 3, an outer insulation layer 4, and a positioning device 5. Heating well casing, heating well heating element, thermocouple, extraction well, bracket 17 and other components. During implementation, the in-situ heating simulated sand tank is placed on the support 17, and the gate valve 16 below the discharge hole 15 is closed; the soil prepared for the experiment is slowly filled into the open cylindrical sand tank 3, and a certain After measuring the soil, the soil is leveled, and then the positioning device 5 is placed on the card slot 6, and then the heating well casing 13, the extraction well casing 18, the connected thermocouple 8 and the protective casing 7 are respectively Vertically penetrate the heating well positi...

Embodiment 2

[0038] Example 2, such as figure 1 As shown, this embodiment provides an application of a simulation device for soil in-situ thermal desorption remediation for simulation research on soil remediation effects.

[0039] Method: Taking naphthalene as the target pollutant, the effect of the simulated repair of the in-situ thermal desorption repair technology carried out by the present invention was investigated.

[0040] Step 1: soil poisoning, take clean soil, dissolve an appropriate amount of naphthalene in acetone, then add the acetone solution dissolved in naphthalene and sprinkle it into the soil, after the acetone volatilizes, fully stir the soil to form poisoned soil, and then The poisonous soil was placed in a safe place and stood for 2 months. A soil sample was taken before the simulation experiment, and the naphthalene content in the soil was determined to be 268.58 mg / kg.

[0041] Step 2: Experimental device connection: place the in-situ heating simulation sand tank on...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a simulation device for soil in-situ thermal desorption remediation. The device comprises an in-situ heating simulation sand tank, a support, an upper heat preservation layer,an upper cover, a heating well, an extraction well and a temperature monitoring well; the in-situ heating simulation sand tank is a hollow open cylindrical sand tank with a bottom; the lower part ofthe in-situ heating simulation sand tank is supported by the support; the upper portion of the in-situ heating simulation sand tank is provided with a cake-shaped upper heat preservation layer; the upper cover is arranged on the upper heat preservation layer; the heating well, the extraction well and the temperature monitoring well penetrate through the upper cover and the cake-shaped heat preservation layer to extend into the in-situ heating simulation sand tank. Water, electricity and operation data acquisition for operation of the device is completed by other external systems. The device iseasy to operate, convenient to use and suitable for exploration of various types of soil remediation engineering parameters and remediation process thermodynamic research.

Description

technical field [0001] The invention relates to the field of soil ecological restoration and the field of thermodynamics application research, and belongs to a simulation device for in-situ thermal desorption restoration technology of polluted sites based on the principle of heat conduction, in particular to a thermodynamic research device for simulating the process of soil in-situ thermal desorption restoration. Background technique [0002] The results of the first national soil pollution survey show that the overall national soil environment is not optimistic. Some areas have serious soil pollution, and the quality of cultivated land soil environment is worrying. With the promulgation of the "Soil Pollution Prevention and Control Action Plan", my country's soil remediation industry has entered a stage of rapid development, and thermal desorption remediation technology has also been popularized and applied, especially in-situ thermal desorption remediation technology becaus...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/06
CPCB09C1/062B09C2101/00
Inventor 梁贤伟孙袭明李根强杜维东伉沛崧赵杰
Owner 国环危险废物处置工程技术(天津)有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products