CN205869060U - Thermal desorption integration treatment device - Google Patents

Thermal desorption integration treatment device Download PDF

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Publication number
CN205869060U
CN205869060U CN201620499682.XU CN201620499682U CN205869060U CN 205869060 U CN205869060 U CN 205869060U CN 201620499682 U CN201620499682 U CN 201620499682U CN 205869060 U CN205869060 U CN 205869060U
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China
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treatment unit
waste residue
cylinder
outlet
transporter
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CN201620499682.XU
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Inventor
高琍玲
杨生哲
裴启东
朱文浩
王伟
孟藤藤
蔡亚菱
周雨
徐瑶
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JIANGSU XINGUANG ENVIRONMENTAL PROTECTION ENGINEERING Co Ltd
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JIANGSU XINGUANG ENVIRONMENTAL PROTECTION ENGINEERING Co Ltd
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Abstract

The utility model discloses a thermal desorption integration treatment device, including screening plant, conveyer, spray set, heat treatment unit, filter equipment, condensing equipment, enrichment device, PLC control system, establish ties in proper order screening plant, conveyer, heat treatment unit, spray set are located the conveyer top, and heat treatment unit's tail gas export is connected with filter equipment, condensing equipment, enrichment device through the pipeline in proper order, heat treatment unit's waste residue export is connected with waste residue conveyer, and waste residue conveying dress divide into two the tunnel, conveys all the way to the waste residue collecting pit, and convey to heat treatment unit on another way, PLC control system carries out real -time supervision and control to each device of the aforesaid.

Description

A kind of thermal desorption integrated treatment unit
Technical field
This utility model relates to a kind of dystopy contaminated soil remediation technology, is specifically related to one and makes soil by high-temperature heating In desorption of contaminants out, the device separated and recovered by tail gas enriching apparatus.
Background technology
Soil is positioned at the center of natural environment, is the material bases depended on for existence of the mankind, is in connection natural environment The inorganic world and the key link of bios, biosphere and non-biosphere.Its basis as agricultural production and the weight of environmental key-element Want ingredient, carry the pollutant from each side of about 90 % in environment.In recent years, modern industrial society's day is increasingly While reaching, entering the pollutant in soil the most increasing, the reparation of contaminated soil has become Present Domestic outer shroud safeguarding the Graduate Record Examination and has studied carefully Focus.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of close-coupled processing dress of thermal desorption Put.
For reaching above-mentioned purpose, this utility model is to be realized by following technical scheme.
A kind of thermal desorption integrated treatment unit, including screening plant, transporter, spray equipment, thermal treatment unit, mistake Filter device, condensing unit, enriching apparatus, PLC control system;It is sequentially connected in series screening plant, transporter, thermal treatment unit, spray Shower device is positioned at above transporter, the offgas outlet of thermal treatment unit by pipeline successively with defecator, condensing unit, richness Acquisition means connects;The waste residue outlet of thermal treatment unit is connected with waste residue transporter, and waste residue transmits dress and is divided into two-way, and a road is transmitted To waste residue collecting pit, another road is sent to thermal treatment unit;Above-mentioned each device is monitored and controls by PLC control system in real time System.
The most described thermal treatment unit includes the outlet of charging aperture, cylinder, actuating device, heating element heater, waste residue, tail gas Outlet;Charging aperture import is positioned at transporter end, and charging aperture outlet extends to cylinder import, and heating element heater is positioned under cylinder Portion, actuating device drives rollers roll, waste residue outlet to be positioned at drum outlet, and offgas outlet is positioned at above cylinder import;Cylinder enters Mouth, drum outlet are provided with obturator.
The inclined shape of the most described cylinder, cylinder import is higher than cylinder import, or cylinder is horizontal, drums inside Spiral guiding plate is installed.
The most described defecator uses sack cleaner, removes the dust more than 0.11 mm.
The most described PLC control system is to temperature, pressure in charging, air inlet, the parameter of electrical equipment, thermal treatment unit The parameters such as power, rotating speed, residence time of material are monitored and controlled in real time.
Thermal desorption recovery technique passes through directly or indirectly heat exchange, pollution medium and contained organic pollution thereof is added Heat is to enough temperature, so that the process that organic pollution is volatilized from pollution medium or separates.Thermal desorption system is Pollutant become the physical separating process of another phase from an inversion of phases, and thermal desorption is not to burn, because repair process does not go out The now destruction to organic pollution, but can have selection by the temperature and residence time of material controlling thermal desorption system Be pollutant volatilized rather than aoxidized, these organic pollutions of degrading.
Additionally provide a kind of thermal desorption integral treatment method further, comprise the following steps:
(1) granule in contaminated soil is removed more than granules such as the rubble of 2cm, concrete;
(2) step (1) process after stain soil is mixed with surfactant;
(3) the contaminated soil heating that will process through step (2);
(4) step (3) is heated gas filtration, the jet condensation evaporated, collects condensed fluid, condensed fluid has been passed through Machine solvent, dissolves the Organic substance in condensed fluid, exhaust emissions.
In the most described step (2), surfactant is cetyl trimethylammonium bromide, alkyl phenol polyvinylether OP-15, sodium chloride 1:3~10:6 in mass ratio~30 is configured to confection.
In the most described step (2), contaminated soil mixes with surfactant 100:2 in mass ratio~15.
In the most described step (3), heating-up temperature is 100 ~ 350 DEG C, and heat time heating time is 10 ~ 40 minutes, material stop Time is 40~60 minutes.
In the most described step (4), organic solvent uses the organic solvent such as diesel oil or kerosene that volatility is relatively low.
This method uses the mode adding surfactant in contaminated soil, and in the thermal treatment unit of closed Carry out pressurized, heated, make organic pollution that boiling point is higher can the most relatively low at a temperature of evaporate, and whole process is all Have under PLC control system and control, the real-time processing procedure that contaminated soil is monitored and controlled.So can locate fast and efficiently Reason has the place being mixed with organic pollutants pollution.
Beneficial effect: compared with prior art, the utility model has the advantage of:
1) have employed novel surfactant formula, the airtight intensification of negative pressure, the organic pollution making chloride class can be Desorb under lower temperature, while reducing energy consumption, decrease the probability that two English generate;
2) the novel mixed surfactant of interpolation is used can to strengthen the energy of desorption of organic pollution in interstices of soil Power;
3) use PLC integral control system, can be monitored protecting to the parameter processed in work in each time period Deposit, and in time technological parameter can be adjusted according to these data, add operability;
4) use tail gas enrichment and separation device, pollutant are carried out enriching and recovering, improves the recycling performance of resource, fall The low probability causing secondary pollution.
Accompanying drawing explanation
The thermal desorption performance of organic pollution under Fig. 1 difference thermal desorption temperature;
The thermal desorption performance of organic pollution under Fig. 2 difference time of staying;
Fig. 3 thermal desorption integrated processing technique flow chart;
Fig. 4 thermal treatment unit structural representation;
Wherein 1. charging aperture, 2. cylinder, 3. gear drive, 4. heating element heater, 5. waste residue outlet, 6. tail gas Outlet.
Detailed description of the invention
Below in conjunction with example, the utility model is described in further detail.
Pollution by pesticides place, Jiangsu, in soil, major pollutants are Polychlorinated biphenyls, polycyclic aromatic hydrocarbon, chlorinatedorganic.Warp Site investigation finds with risk assessment, and on-site soil is by the organic contamination based on VOCs and SVOCs, local pollution The degree of depth is up to 6 m below earth's surface, and soil property is based on silty clay.
A kind of thermal desorption integrated treatment unit, including vibrosieve, feed belt, spray equipment, thermal treatment unit, belt Cleaner unit, spray condenser, enriching apparatus, PLC control system;It is sequentially connected in series vibrosieve, feed belt, thermal treatment unit, spray Shower device is positioned at above feed belt, and the offgas outlet 6 of thermal treatment unit is condensed with belt cleaner unit, spray successively by pipeline Device, enriching apparatus connect;The waste residue outlet 5 of thermal treatment unit is connected with waste residue feed belt, and waste residue transmits dress and is divided into two-way, and one Road transfers to waste residue collecting pit, and another road is sent to thermal treatment unit;Above-mentioned each device is monitored by PLC control system in real time And control.
Thermal treatment unit includes that charging aperture 1, cylinder 2, gear drive 3, heating element heater 4, waste residue outlet 5, tail gas go out Mouth 6;Charging aperture 1 import is positioned at transporter end, and charging aperture 1 outlet extends to cylinder 2 import, and heating element heater 4 is positioned at cylinder 2 Bottom, gear drive 3 drives cylinder 2 to roll, and waste residue outlet 5 is positioned at cylinder 2 and exports, and offgas outlet 6 is positioned at cylinder 2 import Top;Cylinder import, drum outlet are provided with obturator.The inclined shape of cylinder 2, cylinder 2 import is higher than cylinder 2 import, or rolling Cylinder 2 is horizontal, and cylinder 2 is internally installed spiral guiding plate.
Spray condenser is mainly made up of drainer, pressure-relief valve, water injector, captation, surge tank and maintenance door. Organic exhaust gas entrance drainer entered water injector condensation and together entered captation with water.
Embodiment 1
Pretreatment contaminated soil, entered granule in vibrosieve equipment removal soil and was more than the rubble of 2cm, concrete etc. Grain;Cetyl trimethylammonium bromide, alkyl phenol polyvinylether OP-15, sodium chloride 1:6:18 in mass ratio are configured to mixing Medicament;Soil through screening passes through belt transmission, is positioned at the spray thrower spray confection above conveyer belt, is mixed with medicament Soil be sent to thermal treatment unit, thermal treatment unit carries out closed processes, and by PLC control system to charging, air inlet, electrically In the parameter of equipment, thermal treatment unit, the parameter such as temperature, pressure, rotating speed, residence time of material is monitored and controlled in real time, fortune During row cylinder import, drum outlet is airtight, by offgas outlet evacuation, heating-up temperature is 300 DEG C, and the soil time of staying is 30 Minute, pressure is-200~-50Pa, and cylinder 2 rotating speed is 3.8~4.1r/min, after completing the process of a collection of contaminated soil, opens rolling Cylinder 2 outlet is by soil from waste residue outlet 5 eliminating, PLC control system detection the soil after processing is the most up to standard, if up to standard by giving up One tunnel of slag transporter is sent to waste residue collecting pit, if the most up to standard being turned by another road of waste residue transporter is sent to heat treatment Unit processes again.The organic gas evaporated enters sack cleaner through piping, removes the dust more than 0.11 mm, The most again by condensate recycling device, the liquid through the generation of condensing unit enters tail gas enriching apparatus, tail gas enriching apparatus In diesel oil dissolve the Organic substance in condensed fluid according to the similar principle mixed.VOCs clearance in contaminated soil is 85%, SVOCs clearance is 92%.
Embodiment 2
Substantially the same manner as Example 1 except that cetyl trimethylammonium bromide, the poly-second of alkyl phenol in confection Alkene ether OP-15, the mass ratio of sodium chloride are 1:3:6, and in thermal treatment unit, heating-up temperature is 100 DEG C, and the time of staying is 10 minutes, Pressure is-200~-50Pa, and cylinder 2 rotating speed is 3.8~4.1r/min, uses kerosene in tail gas enriching apparatus.In contaminated soil VOCs clearance be 18%, SVOCs clearance is 38%.
Embodiment 3
Substantially the same manner as Example 1 except that cetyl trimethylammonium bromide, the poly-second of alkyl phenol in confection Alkene ether OP-15, the mass ratio of sodium chloride are 1:10:30, and in thermal treatment unit, heating-up temperature is 350 DEG C, and the time of staying is 40 Minute, pressure is-200~-50Pa, and cylinder 2 rotating speed is 3.8~4.1r/min, uses kerosene in tail gas enriching apparatus.Polluted Soil VOCs clearance in earth is 94%, and SVOCs clearance is 98%.
This utility model is illustrated according to above-described embodiment, it will be appreciated that above-described embodiment limits the most in any form Determine this utility model, the technical scheme that all employing equivalents or equivalent transformation mode are obtained, all fall within of the present utility model Within protection domain.

Claims (5)

1. a thermal desorption integrated treatment unit, it is characterised in that include screening plant, transporter, spray equipment, Re Chu Reason unit, defecator, condensing unit, enriching apparatus, PLC control system;It is sequentially connected in series screening plant, transporter, Re Chu Reason unit, spray equipment is positioned at above transporter, the offgas outlet of thermal treatment unit by pipeline successively with defecator, cold Solidifying device, enriching apparatus connect;The waste residue outlet of thermal treatment unit is connected with waste residue transporter, and waste residue transporter is divided into two Road, a road is sent to waste residue collecting pit, and another road is sent to thermal treatment unit;PLC control system carries out reality to above-mentioned each device Time monitor and control.
A kind of thermal desorption integrated treatment unit the most according to claim 1, it is characterised in that described thermal treatment unit bag Include charging aperture, cylinder, actuating device, heating element heater, waste residue outlet, offgas outlet;Charging aperture import is positioned at transporter end, Charging aperture outlet extends to cylinder import, and heating element heater is positioned at cylinder bottom, and actuating device drives rollers roll, waste residue outlet position In drum outlet, offgas outlet is positioned at above cylinder import;Cylinder import, drum outlet are provided with obturator.
A kind of thermal desorption integrated treatment unit the most according to claim 2, it is characterised in that described cylinder is inclined Shape, cylinder import is higher than cylinder import, or cylinder is horizontal, and drums inside is provided with spiral guiding plate.
A kind of thermal desorption integrated treatment unit the most according to claim 1, it is characterised in that described defecator uses Sack cleaner, removes the dust more than 0.11 mm.
A kind of thermal desorption integrated treatment unit the most according to claim 1, it is characterised in that described PLC control system Temperature, pressure, rotating speed, the parameter of residence time of material in charging, air inlet, the parameter of electrical equipment and thermal treatment unit are carried out It is monitored and controlled in real time.
CN201620499682.XU 2016-05-26 2016-05-26 Thermal desorption integration treatment device Active CN205869060U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105855284A (en) * 2016-05-26 2016-08-17 江苏新光环保工程有限公司 Thermal desorption integrated treatment method and device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105855284A (en) * 2016-05-26 2016-08-17 江苏新光环保工程有限公司 Thermal desorption integrated treatment method and device

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