CN209530462U - A kind of processing unit of Soil Thermal desorption gas - Google Patents

A kind of processing unit of Soil Thermal desorption gas Download PDF

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Publication number
CN209530462U
CN209530462U CN201822145106.7U CN201822145106U CN209530462U CN 209530462 U CN209530462 U CN 209530462U CN 201822145106 U CN201822145106 U CN 201822145106U CN 209530462 U CN209530462 U CN 209530462U
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CN
China
Prior art keywords
thermal desorption
desorption gas
soil thermal
gas
processing unit
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Expired - Fee Related
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CN201822145106.7U
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Chinese (zh)
Inventor
邓一荣
李朝晖
李洪伟
周海燕
吕明超
陆海建
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GUANGDONG PROVINCIAL ACADEMY OF ENVIRONMENTAL SCIENCE
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GUANGDONG PROVINCIAL ACADEMY OF ENVIRONMENTAL SCIENCE
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Priority to CN201822145106.7U priority Critical patent/CN209530462U/en
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Abstract

The utility model discloses a kind of processing unit of Soil Thermal desorption gas, which includes the deduster being sequentially communicated, heat exchanger, absorbent charcoal adsorption tank and plasma purifier.Wherein, deduster is used to collect the dust in Soil Thermal desorption gas, heat exchanger be used for by Soil Thermal desorption gas vapor and VOCs/SVOCs volatile ingredient cool and to form condensate liquid, absorbent charcoal adsorption tank is for adsorbing the condensed foul odour of soil thermal desorption gas, plasma purifier is used to adsorb the remaining tail gas in soil thermal desorption gas, deduster has air inlet, plasma purifier has exhaust outlet, gas is passed through by air inlet and successively by deduster, heat exchanger, absorbent charcoal adsorption tank and plasma purifier are simultaneously discharged from the exhaust outlet.The processing unit clean-up effect of the Soil Thermal desorption gas is good, and Soil Thermal desorption gas after processing can achieve discharge standard.

Description

A kind of processing unit of Soil Thermal desorption gas
Technical field
The utility model relates to technical field of soil remediation more particularly to a kind of processing units of Soil Thermal desorption gas.
Background technique
With quickly propelling for Chinese society economy and urbanization process, more and more cities all suffer from industrial structure weight The problem of new adjustment, city layout are planned again, original place is gradually moved away from large quantities of heavily contaminated industrial enterprises of main city zone, part Polluted enterprises are in long-term production history, due to mishandling, leakage, shortage environment supervision etc., in place soil A large amount of poisonous and harmful substances are inside left, these place soil are generally organic by volatile organic matter (VOCs) and half volatile The pollution of object (SVOCs), adversely affects ecological environment, endangers body health of people, it would be highly desirable to carry out nothing to soil Evilization repair process promotes socio-economic development in favor of urban industrial structure adjustment.
The recovery technique type that contaminated site uses is more, and wherein thermal desorption technology is since treatment effeciency is high, repairing efficiency Short, high treating effect is widely used in the recovery project in many retired places of industry.Thermal desorption technology was repaired Cheng Zhong, for the thermal desorption volatilization gas of generation there are many processing mode, dividing from cooling method has directly spray and indirect condensing Two ways.Mode good cooling results directly being sprayed, but sewage load is big, shower water has the risk flowed backward and enter equipment, and The silt timing carried secretly in water need to be handled.Indirect condensing mode condensation water quantity is few, cooling water and Soil Thermal desorption gas Do not contact, can be recycled for a long time, but have tail gas clean-up unclean, be unable to reach discharge standard, treatment effeciency it is low and Effect is unobvious, is unfavorable for the defect of energy economy & environment benefit.
Utility model content
For overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of Soil Thermals that clean-up effect is good The processing unit of desorption gas.
The purpose of this utility model adopts the following technical scheme that realization:
A kind of processing unit of Soil Thermal desorption gas, including the dedusting for collecting the dust in Soil Thermal desorption gas Device, for by Soil Thermal desorption gas vapor and VOCs/SVOCs volatile ingredient cool and to form changing for condensate liquid Hot device, the absorbent charcoal adsorption tank for adsorbing the condensed foul odour of Soil Thermal desorption gas and described for adsorbing The plasma purifier of remaining tail gas in Soil Thermal desorption gas, the deduster offer be connected for for Soil Thermal The air inlet and gas outlet that desorption gas enters, the heat exchanger have the first entrance and first outlet being connected, institute First entrance to be stated to be connected to the gas outlet, the absorbent charcoal adsorption tank has the second entrance and second outlet being connected, The second entrance is connected to the first outlet, and the plasma purifier has the third entrance being connected and exhaust Mouthful, the third entrance is connected to the second outlet.
Further, the deduster is cylindrical in shape, and the outside wall surface of the deduster is arranged with heating jacket.
Further, the heat exchanger is gas flow Demountable spiral-plate heat exchanger.
Further, the absorbent charcoal adsorption tank includes tank body and the installation component being arranged in the inner cavity of tank body, institute Installation component is stated the inner cavity is separated into the ventilation unit for being used for entering for Soil Thermal desorption gas and is used to install active carbon Filling part, the ventilation unit is connected with the filling part, and the side wall of the tank body offers the second entrance and institute Second outlet is stated, the second entrance is connected to the ventilation unit, and the second outlet is connected to the filling part, the tank body Be also provided with inlet port and outlet port, the feed inlet is set to the top of the tank body and be connected to the filling part, it is described out Material mouth is set to the bottom of the tank body and is connected with the filling part.
Further, the installation component include from top to the gradually smaller cone in bottom, the top of the cone with Bottom is open setting, and its top and bottom penetrates through;The top of the cone is connected to the feed inlet, the cone The side wall at top is bonded with the side wall of the tank body, and the bottom of the cone is connected to the discharge port.
Further, the side wall at the top of the cone is flexibly connected with the side wall of the tank body, the bottom of the cone Side wall connect with the edge movable of the discharge port.
Further, the plasma purifier includes the high voltage power supply for power supply, and the high voltage power supply uses plate Formula plasma discharge module.
Further, further include the cyclic water tank that cooling water is provided for the heat exchanger, cooling tower and be mounted on cooling Circulating pump on tower, the cyclic water tank be suitable for be connected to the heat exchanger, the cyclic water tank, cooling tower and circulating pump according to Secondary connection, the circulating pump are connected to the heat exchanger.
It further, further include condensation water tank for accepting condensate liquid, the condensation water tank is suitable for and the heat exchanger Connection.
It further, further include air-introduced machine and the exhaust tube being connected, the air-introduced machine is suitable for being connected to exhaust outlet.
Compared with prior art, the utility model has the beneficial effects that: by deduster, heat exchanger, absorbent charcoal adsorption tank with And plasma purifier is arranged to be sequentially connected logical state, when handling Soil Thermal desorption gas, by by gas by air inlet It is passed through and is successively discharged by deduster, heat exchanger, absorbent charcoal adsorption tank and plasma purifier and from exhaust outlet, make soil Thermal desorption gas is by going chalk dust removing, removal vapor and VOCs/SVOCs volatile ingredient, removal foul odour and removal Vent gas treatment makes Soil Thermal desorption gas reach discharge standard, and processing Soil Thermal desorption gas is high-efficient and good purification.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the processing unit of Soil Thermal desorption gas of the utility model;
Fig. 2 is the cross-sectional view of the absorbent charcoal adsorption tank in the processing unit of Soil Thermal desorption gas shown in FIG. 1.
In figure: 1, deduster;2, heat exchanger;3, absorbent charcoal adsorption tank;31, tank body;32, component is installed;33, active carbon; 34, second entrance;35, second outlet;36, bottom cover;37, top cover;4, plasma purifier;5, air-introduced machine;6, condensation water tank;7, Cyclic water tank;8, cooling tower;9, circulating pump.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the utility model, it should be noted that Under the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new Embodiment.
Referring to Fig. 1, a kind of processing unit of Soil Thermal desorption gas of the utility model is shown, which includes successively Deduster 1, heat exchanger 2, absorbent charcoal adsorption tank 3 and the plasma purifier 4 of connection.Wherein, deduster 1 is for collecting soil Dust in thermal desorption gas, heat exchanger 2 be used for by Soil Thermal desorption gas vapor and VOCs/SVOCs be volatilized into Point cool to form condensate liquid, absorbent charcoal adsorption tank 3 for adsorbing the condensed foul odour of soil thermal desorption gas, wait from Sub- clarifier 4 is used to adsorb the remaining tail gas in soil thermal desorption gas, and deduster 1 has the air inlet and outlet being connected Mouthful, air inlet is used to enter for Soil Thermal desorption gas, and heat exchanger 2 has the first entrance and first outlet being connected, the One entrance is suitable for be connected to gas outlet, absorbent charcoal adsorption tank 3 with the second entrance 34 and second outlet 35 that are connected, wait from Sub- clarifier 4 has third entrance and exhaust outlet, and third entrance is suitable for being connected with second outlet 35, handles soil thermal desorption When gas, Soil Thermal desorption gas can be passed through by air inlet and successively by deduster 1, heat exchanger 2, absorbent charcoal adsorption tank 3 with And plasma purifier 4 and from exhaust outlet be discharged.
It is appreciated that electric precipitator 1 or cyclone dust collectors 1, the dedusting effect of both dedusters 1 can be used in deduster 1 Rate is high, and resistance is low, and maintenance and management is convenient, to be conducive to improve the treatment effeciency of Soil Thermal desorption gas.Heat exchanger 2 can be adopted With spray column, Soil Thermal desorption gas is sprayed by spray liquid, removes the VOCs/SVOCs in Soil Thermal desorption gas Then volatile ingredient reuses the vapor in the filling adsorption Soil Thermal desorption gas being mounted in spray column.Plasma is net Changing device 4 can be used dielectric barrier discharge ion purifier, and dielectric barrier discharge ion reactor can generate greatly under atmospheric pressure The low temperature plasma of volume, high-energy density is in contact, so as to avoid electrode with discharge gas since electrode is not direct Etching problem.
By gas is passed through by air inlet and successively by deduster 1, heat exchanger 2, absorbent charcoal adsorption tank 3 and wait from Sub- clarifier 4 is simultaneously discharged from exhaust outlet, makes Soil Thermal desorption gas by removing chalk dust removing, removal vapor and VOCs/SVOCs Volatile ingredient, removal foul odour and removal vent gas treatment, make Soil Thermal desorption gas reach discharge standard, handle Soil Thermal Desorption gas is high-efficient and good purification.
Preferably, deduster 1 is cylindrical in shape, and the outside wall surface of the deduster 1 is arranged with heating jacket.It can be introduced at air inlet Thermal desorption system flue gas is carried out the pre-heat treatment to heating jacket, is heated using the preheating of heating jacket to 1 cylinder of deduster Heat preservation makes 1 disabler of deduster to avoid the condensation of 1 internal steam of deduster.
Preferably, heat exchanger 2 has gas flow, which is installed in interior heat exchanger 2 using dismountable mode, The heat exchanger 2 is gas flow Demountable spiral-plate heat exchanger 2, can be periodically right by setting detachable for gas flow Gas flow carries out cleaning and maintenance, and heat exchanger 2 is made to keep higher heat exchange efficiency, and reduces the gas flow blocking of heat exchanger 2 Risk, reduce the failure rate of equipment.
Referring to fig. 2, it is preferable that absorbent charcoal adsorption tank 3 includes tank body 31 and the installation being arranged in the inner cavity of tank body 31 Component 32, tank body 31 are hollow structure, and second entrance 34 and second outlet 35 are oppositely arranged on the side wall of tank body 31.Specifically Ground, tank body 31 are also provided with feed inlet and discharge port, and feed inlet, which is located at the top of tank body 31 and is covered by top cover 37, to be closed, and is discharged Mouth, which is located at the bottom of tank body 31 and is covered by bottom cover 36, to be closed, and tank body 31, top cover 37 and bottom cover 36 enclose closed inner cavity, installation portion Inner cavity is separated into the ventilation unit for being used for entering for Soil Thermal desorption gas and the filling part for being used to install active carbon 33 by part 32, is led to Wind portion is interconnected with filling part, and second entrance 34 is connected to ventilation unit, and second outlet 35 is connected to filling part, feed inlet and go out Material mouth is connected with filling part.By the way that second entrance 34 and second outlet 35 are oppositely arranged, can be formed gas to circulation Wind makes the gas into filling part be easier to be discharged from second outlet 35.
Active carbon 33 in the tank body 31 is packed into from the top of tank body 31, when needing replacing active carbon 33, opens bottom cover 36, It is directly poured out from the discharge port of the bottom of tank body 31 using the gravity of active carbon 33 itself, easy to operate, clearance time is short, also not Need to expend a large amount of labour.
Installing component 32 includes from top to the gradually smaller cone in bottom, and the top and bottom of cone is that opening is set It sets, and its top and bottom penetrates through;The side wall at the top of cone is bonded with the side wall of tank body 31, and the top of cone and feed inlet connect Logical, the bottom of cone is connected to discharge port;Active carbon 33 enters from the top of cone, pours out from the bottom of cone.
Cone is set as gradually becoming smaller from top to bottom, when replacing waste and old active carbon 33, the active carbon of cone base After 33 discharges, the active carbon 33 on top can quickly slide along the side wall of cone, so that replacement active carbon 33 is more convenient, activity The discharge of charcoal 33 also more thoroughly, noresidue.
Top of the filling part by tank body 31, the over top positioned at cone tank body 31 side wall and cone inside side The bottom of wall and cone encloses;Active carbon 33 is poured into from the top of tank body 31, inside cone, from the bottom of cone It pours out in portion.
In the side wall and tank body 31 of tank body 31 below outside side wall of the ventilation unit by cone, the top positioned at cone Side bottom wall encloses, so that ventilation unit is annular groove shape.The side wall of cone is equipped with the ventilation hole of hollow out, and ventilation unit is by logical Air holes is connected to filling part.Ventilation unit is set as annular groove shape, can increase draught area, so that Soil Thermal to be clean is de- Attached gas enters the inside of active carbon 33 deeper into ground, and clean-up effect is more preferable, and purification efficiency is higher.
The side wall at the top of cone is flexibly connected with the side wall of tank body 31, the side wall of the bottom of cone and the edge of discharge port It is flexibly connected, to make cone that can dismantle or install from discharge port.Specifically, pass through the side wall and tank at the top of setting cone The side wall of body 31 is flexibly connected, and the side wall of the bottom of cone and the edge movable of discharge port connect, so that waste and old cone It can take out from the discharge port of the bottom of tank body 31, then new cone is re-released by feed inlet or discharge port again In tank body 31.More specifically, the shabby cone fallen in part is discharged with active carbon 33 when clearing up waste and old active carbon 33, remain Remaining part can also easily take out from discharge port, simple, convenient quick, it is not necessary to replace entire tank body 31, save production cost.
Preferably, plasma purifier 4 includes the high voltage power supply for power supply, which uses plate-sheet-type plasma Discharge module.Rapidly and efficiently with purified treatment, easy to clean, no material consumption loss, maintenance cost is extremely low, than traditional honeycomb electric field There is apparent advantage.
Preferably, the processing unit of this soil thermal desorption gas further includes providing the cyclic water tank of cooling water for heat exchanger 2 7, cooling tower 8 and the circulating pump 9 being mounted on cooling tower 8, cyclic water tank 7 is suitable for being connected to heat exchanger 2, cyclic water tank 7, cold But tower 8 and circulating pump 9 are sequentially communicated, and circulating pump 9 is connected to heat exchanger 2.Cooling water can be recycled, and greatly reduce cooling The consumption of water and sewage load, realization recycle water resource and heat exchange efficiency can be improved.
In addition, the processing unit of this soil thermal desorption gas further includes the condensation water tank 6 for accepting condensate liquid, the condensation Water tank 6 is suitable for being connected to heat exchanger 2.By the way that condensation water tank 6 is arranged, condensation water tank 6 individually accepts condensate liquid, and realization is collected separately Condensate liquid can reduce sewage load.
Secondly, the processing unit of this soil thermal desorption gas further includes air-introduced machine 5 and the exhaust tube that is connected, air-introduced machine 5 are suitable for being connected to the exhaust outlet of plasma purifier 4.
As shown in Figure 1, by the dust collection in Soil Thermal desorption gas and discharging it into thermal desorption system by deduster 1 Heating cavity, the gas after dedusting enter the heat exchanger 2 of rear class, by the vapor and VOCs/SVOCs in Soil Thermal desorption gas Volatile ingredient cools to form condensate liquid, and condensate liquid flow to condensation water tank 6, and the cooling circulating water of heat exchanger 2 is by cyclic water tank 7 It provides, recirculated water is sent into heat exchanger 2 by circulating pump 9 after the cooling of cooling tower 8, and the water after heat exchange heating flows back to cyclic water tank 7 again; The condensed residual odor gas of Soil Thermal desorption gas is purified through absorbent charcoal adsorption tank 3 and is pre-processed, then through plasma purifier 4 Processing, final qualified discharge, clean-up effect are good.
Above embodiment is only preferred embodiments of the present invention, cannot be protected with this to limit the utility model Range, the variation of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacement belong to In the utility model range claimed.

Claims (10)

1. a kind of processing unit of Soil Thermal desorption gas, which is characterized in that including for collecting in Soil Thermal desorption gas The deduster of dust, for by Soil Thermal desorption gas vapor and VOCs/SVOCs volatile ingredient cool and to be formed The heat exchanger of condensate liquid, absorbent charcoal adsorption tank and use for adsorbing the condensed foul odour of Soil Thermal desorption gas In the plasma purifier for adsorbing the remaining tail gas in the Soil Thermal desorption gas, the deduster offers the use being connected Air inlet and gas outlet in the entrance of heat supply desorption gas, the heat exchanger go out with the first entrance being connected and first Mouthful, the first entrance is connected to the gas outlet, and the absorbent charcoal adsorption tank has the second entrance and second being connected Outlet, the second entrance is connected to the first outlet, the plasma purifier with the third entrance being connected and Exhaust outlet, the third entrance are connected to the second outlet.
2. a kind of processing unit of Soil Thermal desorption gas as described in claim 1, which is characterized in that the deduster is in cylinder The outside wall surface of shape, the deduster is arranged with heating jacket.
3. a kind of processing unit of Soil Thermal desorption gas as described in claim 1, which is characterized in that the heat exchanger is gas Body runner Demountable spiral-plate heat exchanger.
4. a kind of processing unit of Soil Thermal desorption gas as described in claim 1, which is characterized in that the activated carbon adsorption Tank includes tank body and the installation component being arranged in the inner cavity of tank body, and the inner cavity is separated by the installation component to be used to supply The ventilation unit that Soil Thermal desorption gas enters and the filling part for installing active carbon, the ventilation unit and the filling part phase Connection, the side wall of the tank body offer the second entrance and the second outlet, the second entrance and the ventilation Portion's connection, the second outlet are connected to the filling part, and the tank body is also provided with inlet port and outlet port, the feed inlet Set on the tank body top and be connected to the filling part, the discharge port be set to the tank body bottom and with the filling Portion is connected.
5. a kind of processing unit of Soil Thermal desorption gas as claimed in claim 4, which is characterized in that the installation component packet It includes from top to the gradually smaller cone in bottom, the top and bottom of the cone is open setting, and its top and bottom Perforation;The top of the cone is connected to the feed inlet, and the side wall at the top of the cone is bonded with the side wall of the tank body, The bottom of the cone is connected to the discharge port.
6. a kind of processing unit of Soil Thermal desorption gas as claimed in claim 5, which is characterized in that the top of the cone Side wall be flexibly connected with the side wall of the tank body, the edge movable of the side wall of the bottom of the cone and the discharge port connects It connects.
7. a kind of processing unit of Soil Thermal desorption gas as described in claim 1, which is characterized in that described plasma cleaning Device includes the high voltage power supply for power supply, and the high voltage power supply uses plate-sheet-type plasma discharge module.
8. a kind of processing unit of Soil Thermal desorption gas as described in claim 1, which is characterized in that further include being changed to be described Hot device provides cyclic water tank, cooling tower and the circulating pump being mounted on cooling tower of cooling water, the cyclic water tank be suitable for The heat exchanger connection, the cyclic water tank, cooling tower and circulating pump are sequentially communicated, and the circulating pump and the heat exchanger connect It is logical.
9. a kind of processing unit of Soil Thermal desorption gas as described in claim 1, which is characterized in that further include for accepting The condensation water tank of condensate liquid, the condensation water tank are suitable for being connected to the heat exchanger.
10. a kind of processing unit of Soil Thermal desorption gas as claimed in any one of claims 1-9 wherein, which is characterized in that also Including air-introduced machine and the exhaust tube being connected, the air-introduced machine is suitable for being connected to the exhaust outlet.
CN201822145106.7U 2018-12-20 2018-12-20 A kind of processing unit of Soil Thermal desorption gas Expired - Fee Related CN209530462U (en)

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Application Number Priority Date Filing Date Title
CN201822145106.7U CN209530462U (en) 2018-12-20 2018-12-20 A kind of processing unit of Soil Thermal desorption gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822145106.7U CN209530462U (en) 2018-12-20 2018-12-20 A kind of processing unit of Soil Thermal desorption gas

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Publication Number Publication Date
CN209530462U true CN209530462U (en) 2019-10-25

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Granted publication date: 20191025