CN105983571A - Polluted soil repairing system - Google Patents
Polluted soil repairing system Download PDFInfo
- Publication number
- CN105983571A CN105983571A CN201610543589.9A CN201610543589A CN105983571A CN 105983571 A CN105983571 A CN 105983571A CN 201610543589 A CN201610543589 A CN 201610543589A CN 105983571 A CN105983571 A CN 105983571A
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- furnace chamber
- gas
- air
- contaminated soil
- soil remediation
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- 239000002689 soil Substances 0.000 title claims abstract description 67
- 238000003795 desorption Methods 0.000 claims abstract description 46
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- 239000002737 fuel gas Substances 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 61
- 238000005067 remediation Methods 0.000 claims description 33
- 230000003134 recirculating Effects 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 18
- 239000003463 adsorbent Substances 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 12
- 241000143392 Oar Species 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 7
- 229910004682 ON-OFF Inorganic materials 0.000 claims description 4
- 238000007747 plating Methods 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 239000010410 layer Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- YXFVVABEGXRONW-UHFFFAOYSA-N toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 2
- TVFDJXOCXUVLDH-UHFFFAOYSA-N Cesium Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 210000003608 Feces Anatomy 0.000 description 1
- 229920002456 HOTAIR Polymers 0.000 description 1
- -1 NACF Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Natural products OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 235000021393 food security Nutrition 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N o-xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000002085 persistent Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000002285 radioactive Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000003802 soil pollutant Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 150000003438 strontium compounds Chemical class 0.000 description 1
- 230000004083 survival Effects 0.000 description 1
- 239000000271 synthetic detergent Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/06—Reclamation of contaminated soil thermally
- B09C1/065—Reclamation of contaminated soil thermally by pyrolysis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
Abstract
The invention relates to a polluted soil repairing system. The polluted soil repairing system comprises a thermal desorption device, a filter element adsorption device, a draught fan, a packing tower and an indication tank, which are communicated in sequence through a pipeline, wherein the thermal desorption device comprises a furnace chamber, a fuel gas heating assembly, an air inlet valve located on a side wall of the furnace chamber and heat pipes located in the furnace chamber; the top of the furnace chamber is communicated with the filter element adsorption device through a pipeline; the plurality of heat pipes are arranged; one end of each heat pipe is stuck on the bottom surface of the furnace chamber; the other ends of the heat pipes extend upward to the upper middle part of the furnace chamber; the fuel gas heating assembly is used for heating the bottom surface of the furnace chamber; the indication tank is internally provided with an adsorption indication agent; and an exhausting pipe is arranged at the top of the indication tank. The polluted soil repairing system can be used for rapidly and uniformly heating polluted soil, has good thermal desorption effect and realizes energy saving and environment friendliness.
Description
Technical field
The present invention relates to a kind of Soil Thermal desorption prosthetic appliance, belong to technical field of soil remediation.
Background technology
Soil pollutant is broadly divided into inorganic pollution and the big class of organic pollution two.Inorganic pollution mainly includes acid, alkali, heavy metal, salt, radioactive element caesium, strontium compound, contain arsenic, selenium, the compound etc. of fluorine.Organic pollution mainly include machine agricultural chemicals, phenols, cyanide, oil, synthetic detergent, 3,4-BaP and the harmful microorganism etc. being brought by municipal sewage, mud and barnyard manure.The research of contaminated soil remediation technology is started in the later stage the 70's of 20th century.Contaminated soil remediation can ensure the food security of the mankind and healthy, is significant.
Thermal desorption recovery technique is contaminated soil to be heated to enough temperature through directly heating or indirectly heat so that it is the process that contained organic pollution (material such as benzene,toluene,xylene, ethylbenzene, TPH and multiring aromatic hydrocarbon) is volatilized or separates.Thermal desorption is from the physical separating process that a certain inversion of phases is another phase by pollutant, can selectively make target contaminant volatilize by controlling the temperature of thermal desorption system and residence time of material.Soil Thermal desorption technology through engineering approaches, is widely used in the offing normal or in-situ immobilization of place organic polluted soil of high pollution, but yet suffers from that equipment price is expensive, desorption time is long, processing cost crosses the problems such as height.
Chinese patent literature CN105032913A(application number: 201510494401.1) disclose a kind of thermal desorption device, thermal desorption repair system and the thermal desorption method of contaminated soil, this thermal desorption device includes slot type speculum and thermal-collecting tube, described thermal-collecting tube is by the outer layer sleeve wearing successively from the outside to the core, intermediate casing and inner layer sleeve composition, described outer layer sleeve is transparent, it is provided with vacuum interlayer between outer layer sleeve and intermediate casing, it is heat exchange zone between described intermediate casing and inner layer sleeve, described heat exchange zone passes through the external circulating pump of pipeline and oil oven, the inner space of described inner layer sleeve is workspace.This thermal desorption repair system includes pretreatment unit, feed arrangement and described thermal desorption device, dust arrester and the exhaust treatment system being sequentially connected with.
Chinese patent literature CN102818816B(application number: 201210340236.0) the test system described in a kind of soil thermal desorption rotary furnace test system and method for testing thereof that discloses includes carrier gas device, revolution thermal desorption test device and exhaust gas processing device, described carrier gas device includes nitrogen cylinder, pressure-reducing valve and the corrosion-resistant soft air-guide pipe of air inlet, described revolution thermal desorption test device includes tubular type rotary furnace, air inlet air pressure valve, flowmeter and air pressure valve of giving vent to anger, described exhaust gas processing device includes corrosion-resistant soft air-guide pipe of giving vent to anger, condenser, Drexel bottle and active carbon adsorber.
Chinese patent literature CN104226681A(application number: 201410474990.2) disclose a kind of persistent organism contaminated soil indirect thermal desorption and dispose this device and include contaminated soil pretreatment system, feed system, thermal desorption system, discharge system, exhaust gas purification system, automatic control system；Contaminated soil pretreatment system is connected with the charging aperture of thermal desorption system by feed system, and the solids exit mouth of thermal desorption system is connected with discharge system, and the gas discharge mouth of thermal desorption system is connected with the import of exhaust gas purification system.
The Soil Thermal desorption system of above-mentioned patent document, structure is had nothing in common with each other, and is functionally all divided into two steps, and one is that heating contaminated soil makes organic pollution therein volatilize, and two is to the vent gas treatment after thermal desorption.Due to the poor thermal conductivity of soil, how heating is carried out to contaminated soil and can directly affect reparation result.The thermal desorption stove of large volume is not uniformly quick to soil heating；It is carried out continuously the thermal desorption stove operation stability difference of process, need when processing different types of soil to pre-process, to prevent the damage to equipment.
Content of the invention
The technical problem to be solved in the present invention is to provide one can heat contaminated soil quickly and evenly, and thermal desorption effect is good, and the contaminated soil remediation system adopting recirculating of energy-conserving and environment-protective.
The present invention solves that a kind of technical scheme that above-mentioned technical problem proposes is: a kind of contaminated soil remediation system adopting recirculating, including be sequentially connected logical thermal desorption device, filter core adsorbent equipment, blower fan, packed tower and index pot by pipeline；Described thermal desorption device includes furnace chamber, gas heating assembly, the air inlet valve being positioned at described furnace chamber sidewall and the heat pipe being positioned at described furnace chamber；
The top of described furnace chamber is connected with filter core adsorbent equipment by pipeline；
Described heat pipe has many, and one end of heat pipe is fitted in the bottom surface of furnace chamber, and the other end extends upwardly to the middle and upper part of furnace chamber；
Described gas heating assembly is for heating the bottom surface of described furnace chamber；
Being provided with adsorption indicator in described index pot, the top of described index pot is provided with blast pipe.
Above-mentioned heat pipe is vertically arranged in the shape of a spiral.
Filler in above-mentioned packed tower is porous stainless steel corrugated plating, is provided with, in described filter core adsorbent equipment, the filter core that multiple high polymer composite material is made.
It is additionally provided with circulated sprinkling assembly in above-mentioned packed tower, described circulated sprinkling assembly includes spray head and liquid pump, described spray head is located at the top in packed tower, and the liquid outlet of described liquid pump is connected with spray head by pipeline, and the inlet of described liquid pump is connected with the bottom of packed tower；The bottom storage of described packed tower has Adsorption of Organic solution, and the pipeline of described packed tower air inlet stretches in packed tower and is positioned at below the liquid level of Adsorption of Organic solution.
The pipeline of above-mentioned index pot air inlet stretches in index pot and is positioned at adsorption indicator；The side of described index pot offers observation window.
The top of above-mentioned blast pipe is positioned at the highest point of whole contaminated soil remediation system adopting recirculating.
Above-mentioned thermal desorption device also includes blast pipe and is positioned at rabbling mechanism and the screen frame of described furnace chamber；Described rabbling mechanism includes hollow axle and the hollow stirrer oar being fixedly connected on described hollow axle, described hollow axle is vertically arranged and two ends are connected with top and the lower rotation of described furnace chamber respectively, described hollow axle forms, with the inner chamber of hollow stirrer oar, the air channel connecting, described blast pipe is connected with described air channel, and described hollow axle and hollow stirrer oar are equipped with ventilating opening；Described screen frame is fixed with the inwall of furnace chamber and is connected and is positioned between inwall and the rabbling mechanism of described furnace chamber, and described heat pipe is fixedly connected on described screen frame；Described blast pipe is positioned at the lower section of described furnace chamber, and described gas heating assembly is used for heating described blast pipe, and described blast pipe is provided with valve.
Above-mentioned gas heating assembly includes burner, fuel gas mixer, Gas Pipe, gas valve, air hose and air valve；Described Gas Pipe is connected with two air inlets of fuel gas mixer respectively with air hose, and the gas outlet of described fuel gas mixer is connected with described burner, and described Gas Pipe is provided with gas valve, and described air hose is provided with air valve.
It is additionally provided with air heat exchanger on pipeline between above-mentioned thermal desorption device and filter core adsorbent equipment；The gas outlet of described air heat exchanger is connected with described air hose by air pump.
Above-mentioned contaminated soil remediation system adopting recirculating also includes central controller and the temperature sensor being located in described furnace chamber；The signal output part of described temperature sensor is connected with described central controller, and described central controller is for controlling the on off state of described blower fan and the on off state of air force and air valve, air inlet valve and gas valve and switch degree.
Above-mentioned contaminated soil remediation system adopting recirculating also includes the gas detection sensor being located in described blast pipe, and the signal output part of described gas detection sensor is connected with described central controller.
The present invention has a positive effect:
(1) contaminated soil is heated by the contaminated soil remediation system adopting recirculating of the present invention by thermal desorption device, the organic pollution in contaminated soil is made to volatilize, blower fan and optional equipment coordinate, so that form negative pressure in the furnace chamber of thermal desorption device, reduce the boiling point of organic pollution, making organic pollution be easier to volatilization, heat pipe makes the heating more Quick uniform of contaminated soil as heat-conducting medium.Thermal desorption device volume in the contaminated soil remediation system adopting recirculating of the present invention is relatively big, and thermal desorption effect is good, and efficiency is high, it is adaptable to the mass disposal of contaminated soil.
(2) contaminated soil remediation system adopting recirculating of the present invention uses air heat exchanger to cool down to from thermal desorption device tail gas out, organic pollution is condensed, such that it is able to adsorbed process totally, air heat exchanger, the hot-air producing is used for and combustion gas mixing, energy-conserving and environment-protective.
(3) vent gas treatment of the contaminated soil remediation system adopting recirculating of the present invention does not use the method for combustion tail gas, but filter core adsorbent equipment, spray packed tower, index pot etc. carry out adsorption treatment successively, multiple filtration, the gas cleanliness without any pollution of discharge, the discharge of tail gas can be indicated by index pot, last blast pipe arranges sensor to be monitored the discharge of tail gas, reach the effect of dual fail-safe, effectively prevent secondary pollution.
(4) contaminated soil remediation system adopting recirculating of the present invention uses the monitoring that the heating process of contaminated soil and vent gas treatment process can be automated by central controller, and intelligence degree is high.
Brief description
Contaminated soil remediation system adopting recirculating described in embodiment of the present invention is described further below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the contaminated soil remediation system adopting recirculating of embodiment 1.
Fig. 2 is the structural representation of the thermal desorption device of the contaminated soil remediation system adopting recirculating of embodiment 2.
The mark of above-mentioned accompanying drawing is as follows:
Thermal desorption device 1, furnace chamber 11, gas heating assembly 12, burner 12-1, fuel gas mixer 12-2, Gas Pipe 12-3, gas valve 12-4, air hose 12-5, air valve 12-6, rabbling mechanism 13, hollow axle 13-1, hollow stirrer oar 13-2, heat pipe 14, air inlet valve 15, screen frame 16, blast pipe 17
Air heat exchanger 2, air pump 21,
Filter core adsorbent equipment 3,
Blower fan 4,
Packed tower 5, corrugated plating 51, spray head 52, liquid pump 53, Adsorption of Organic solution 54,
Index pot 6, adsorption indicator 61, observation window 62, blast pipe 63.
Detailed description of the invention
Embodiment 1
See Fig. 1, the contaminated soil remediation system adopting recirculating of the present embodiment, including thermal desorption device the 1st, the air heat exchanger the 2nd, filter core adsorbent equipment the 3rd, blower fan the 4th, packed tower 5 and the index pot 6 that are sequentially connected by pipeline.
Thermal desorption device 1 includes that the 12nd, furnace chamber the 11st, gas heating assembly is positioned at the air inlet valve 15 of furnace chamber 11 sidewall and is positioned at furnace chamber 11 and heat pipe 14.Furnace chamber 11 is pressure heat insulation furnace chamber, and the center of top of furnace chamber 11 is connected with filter core adsorbent equipment 3 by pipeline.
Heat pipe 14 has many.One end of heat pipe 14 is fitted in the bottom surface of furnace chamber 11, and the other end extends upwardly to the middle and upper part of furnace chamber 11.Heat pipe 14 is vertically arranged and is equidistantly distributed so that contaminated soil can be heated with multiple spot, and heating is more uniformly rapid (heat pipe 14 can also be arranged in the shape of a spiral).
Gas heating assembly 12 includes burner 12-1, fuel gas mixer 12-2, Gas Pipe 12-3, gas valve 12-4, air hose 12-5 and air valve 12-6.Gas Pipe 12-3 is connected with two air inlets of fuel gas mixer 12-2 respectively with air hose 12-5, and the gas outlet of fuel gas mixer 12-2 is connected with burner 12-1, and Gas Pipe 12-3 is provided with gas valve 12-4, and air hose 12-5 is provided with air valve 12-6.
The gas outlet of air heat exchanger 2 is connected with air hose 12-5 by air pump 21.
Being provided with the filter core that multiple high polymer composite material is made in filter core adsorbent equipment 3, filter core can be the HEPA filter core of the Material claddings such as polyester fiber, NACF, glass fibre.
Blower fan 4 is to vacuumize blower fan.
The burner 12-1 of gas heating assembly 12 is for the bottom surface of heating furnace chamber 11.Filler in packed tower 5 is porous stainless steel corrugated plating 51, so that gas-liquid contact is more abundant, and the beneficially absorption of organic volatile.It is additionally provided with circulated sprinkling assembly in packed tower 5.Circulated sprinkling assembly includes spray head 52 and liquid pump 53.Spray head 52 is located at the top in packed tower 5, and the liquid outlet of liquid pump 53 is connected with spray head 52 by pipeline, and the inlet of liquid pump 53 is connected with the bottom of packed tower 5.The bottom storage of packed tower 5 has Adsorption of Organic solution 54.In the pipeline of packed tower 5 air inlet stretches into packed tower 5 and be positioned at below the liquid level of Adsorption of Organic solution 54.
It is provided with adsorption indicator 61 in index pot 6.Adsorption indicator 61 is the oxidizing agent solution of aobvious color, if containing organic pollution in index pot 6 when gas reaches, adsorption indicator 61 fades while adsorbing survival gas), in the pipeline of index pot 6 air inlet stretches into index pot 6 and be positioned at adsorption indicator 61.The side of index pot 6 offers observation window 62, for observing the color change of adsorption indicator 61.The top of index pot 6 is provided with blast pipe 63.The top of blast pipe 63 is positioned at the highest point of whole contaminated soil remediation system adopting recirculating, to prevent gas from pouring in down a chimney.
The contaminated soil remediation system adopting recirculating of the present embodiment also includes central controller, the gas detection sensor being located in blast pipe 63 and the temperature sensor being located in furnace chamber 11.The signal output part of temperature sensor is connected with central controller respectively with the signal output part of gas detection sensor.Central controller is single-chip microcomputer.nullThe charging aperture by furnace chamber 11 top for the contaminated soil remediation system adopting recirculating contaminated soil of the present embodiment，Put in furnace chamber 11，Open gas heating assembly 12 to heat contaminated soil，It is provided with temperature sensor in furnace chamber 11，The switch degree to gas valve 12-4 and air valve 12-6 for the temperature that central controller can detect according to temperature sensor is controlled，The air quantity of blower fan 4 and the intake of air inlet valve 15-1 are controlled，Thus control programming rate，Form negative pressure in making furnace chamber 11，Contaminated soil reaches and maintains assigned temperature，The organic volatile discharged，Adsorb through filter core adsorbent equipment 3 after air heat exchanger 2 condensation，Packed tower 5 circulated sprinkling adsorbs，In index pot 6, adsorption indicator 61 adsorbs，Finally discharge，Gas detection sensor can monitor the quality discharging gas，Owing to not having tail gas not burn，So secondary pollution will not be produced.Central controller can also control liquid pump 53, thus carries out Automated condtrol to the spray of packed tower 5, can also control air pump 21, thus be controlled the cooling effectiveness of air heat exchanger 2.
Embodiment 2
Seeing Fig. 2, the contaminated soil remediation system adopting recirculating remainder of the present embodiment is same as in Example 1, and difference is: thermal desorption device 1 also includes blast pipe 17 and is positioned at rabbling mechanism 13 and the screen frame 16 of furnace chamber 11.
Rabbling mechanism 13 includes hollow axle 13-1 and the hollow stirrer oar 13-2 being fixedly connected on hollow axle 13-1.Hollow axle 13-1 is vertically arranged and two ends are connected with top and the lower rotation of furnace chamber 11 respectively, and hollow axle 13-1 forms, with the inner chamber of hollow stirrer oar 13-2, the air channel connecting.Blast pipe 17 is connected with air channel.It is equipped with ventilating opening on hollow axle 13-1 and hollow stirrer oar 13-2.By the air channel air intake of rabbling mechanism 13 so that soil contacts more abundant with hot blast, the beneficially discharge of the conduction of soil heat and volatile organic matter.Rabbling mechanism 13 is the good conductor of heat, also can become the parts of uniform heat conduction when the bottom surface of furnace chamber 11 and blast pipe 17 are heated, and beneficially soil heats evenly and rapidly.
Screen frame 16 is fixed with the inwall of furnace chamber 11 and is connected and is positioned between the inwall of furnace chamber 11 and rabbling mechanism 13.Heat pipe 14 is fixedly connected on screen frame 16.Setting up screen frame 16 can increase the fixing firmness of heat pipe 14, it is to avoid in soil whipping process, opposite heat tube 14 impacts.
Blast pipe 17 is positioned at the lower section of furnace chamber 11.Gas heating assembly 12 is used for heating blast pipe 17.Blast pipe 15 is provided with valve.
Obviously, above-mentioned embodiment is only for clearly demonstrating embodiment of the present invention example, and is not the restriction to embodiment of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And these spirit belonging to the present invention are extended out obvious change or variation still in protection scope of the present invention among.
Claims (10)
1. a contaminated soil remediation system adopting recirculating, it is characterised in that: include being sequentially connected logical thermal desorption device (1), filter core adsorbent equipment (3), blower fan (4), packed tower (5) and index pot (6) by pipeline；Described thermal desorption device (1) includes furnace chamber (11), gas heating assembly (12), is positioned at the air inlet valve (15) of described furnace chamber (11) sidewall and is positioned at the heat pipe (14) of described furnace chamber (11)；
The top of described furnace chamber (11) is connected with filter core adsorbent equipment (3) by pipeline；
Described heat pipe (14) has many, and one end of heat pipe (14) is fitted in the bottom surface of furnace chamber (11), and the other end extends upwardly to the middle and upper part of furnace chamber (11)；
Described gas heating assembly (12) is used for heating the bottom surface of described furnace chamber (11)；
Being provided with adsorption indicator (61) in described index pot (6), the top of described index pot (6) is provided with blast pipe (63).
2. contaminated soil remediation system adopting recirculating according to claim 1, it is characterised in that: described heat pipe (14) is vertically arranged in the shape of a spiral.
3. contaminated soil remediation system adopting recirculating according to claim 1, it is characterised in that: the filler in described packed tower (5) is porous stainless steel corrugated plating (51), is provided with, in described filter core adsorbent equipment (3), the filter core that multiple high polymer composite material is made.
4. contaminated soil remediation system adopting recirculating according to claim 1, it is characterized in that: described packed tower is additionally provided with circulated sprinkling assembly in (5), described circulated sprinkling assembly includes spray head (52) and liquid pump (53), described spray head (52) is located at the top in packed tower (5), the liquid outlet of described liquid pump (53) is connected with spray head (52) by pipeline, and the inlet of described liquid pump (53) is connected with the bottom of packed tower (5)；The bottom storage of described packed tower (5) has Adsorption of Organic solution (54), and the pipeline of described packed tower (5) air inlet stretches in packed tower (5) and is positioned at below the liquid level of Adsorption of Organic solution (54).
5. contaminated soil remediation system adopting recirculating according to claim 1, it is characterised in that: the pipeline of described index pot (6) air inlet stretches in index pot (6) and is positioned at adsorption indicator (61)；The side of described index pot (6) offers observation window (62)；The top of described blast pipe (63) is positioned at the highest point of whole contaminated soil remediation system adopting recirculating.
6. contaminated soil remediation system adopting recirculating according to claim 1, it is characterised in that: described thermal desorption device (1) also includes blast pipe (17) and the rabbling mechanism (13) being positioned at described furnace chamber (11) and screen frame (16)；
Described rabbling mechanism (13) includes hollow axle (13-1) and the hollow stirrer oar (13-2) being fixedly connected on described hollow axle (13-1), described hollow axle (13-1) is vertically arranged and two ends are connected with top and the lower rotation of described furnace chamber (11) respectively, described hollow axle (13-1) forms, with the inner chamber of hollow stirrer oar (13-2), the air channel connecting, described blast pipe (17) is connected with described air channel, and described hollow axle (13-1) and hollow stirrer oar (13-2) are equipped with ventilating opening；Described screen frame (16) is fixing with the inwall of furnace chamber (11) to be connected and is positioned between the inwall of described furnace chamber (11) and rabbling mechanism (13), and described heat pipe (14) is fixedly connected on described screen frame (16)；Described blast pipe (17) is positioned at the lower section of described furnace chamber (11), and described gas heating assembly (12) is used for heating described blast pipe (17), and described blast pipe (15) is provided with valve.
7. contaminated soil remediation system adopting recirculating according to any one of claim 1 to 6, it is characterised in that: described gas heating assembly (12) includes burner (12-1), fuel gas mixer (12-2), Gas Pipe (12-3), gas valve (12-4), air hose (12-5) and air valve (12-6)；Described Gas Pipe (12-3) is connected with two air inlets of fuel gas mixer (12-2) respectively with air hose (12-5), the gas outlet of described fuel gas mixer (12-2) is connected with described burner (12-1), described Gas Pipe (12-3) is provided with gas valve (12-4), and described air hose (12-5) is provided with air valve (12-6).
8. contaminated soil remediation system adopting recirculating according to claim 7, it is characterised in that: it is additionally provided with air heat exchanger (2) on the pipeline between described thermal desorption device (1) and filter core adsorbent equipment (3)；The gas outlet of described air heat exchanger (2) is connected with described air hose (12-5) by air pump (21).
9. contaminated soil remediation system adopting recirculating according to claim 7, it is characterised in that: also include central controller and the temperature sensor being located in described furnace chamber (11)；The signal output part of described temperature sensor is connected with described central controller, and described central controller is used for controlling on off state and the switch degree of the on off state of described blower fan (4) and air force and air valve (12-6), air inlet valve (15-1) and gas valve (12-4).
10. contaminated soil remediation system adopting recirculating according to claim 9, it is characterised in that: also including the gas detection sensor being located in described blast pipe (63), the signal output part of described gas detection sensor is connected with described central controller.
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Address after: 214100 Jiangsu city of Wuxi province Huishan Economic Development Zone, supporting the district before Bao Lu Lu Applicant after: WUXI TAIHU LAKE RESTORATION CO.,LTD. Address before: 214200 Jiangsu province Binhu District of Wuxi City Li Xi Lu 38-7 Applicant before: WUXI TAIHU LAKE RESTORATION Co.,Ltd. |
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