CN206970683U - A kind of system of recycling super enriching plant cutting - Google Patents
A kind of system of recycling super enriching plant cutting Download PDFInfo
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- CN206970683U CN206970683U CN201720345259.9U CN201720345259U CN206970683U CN 206970683 U CN206970683 U CN 206970683U CN 201720345259 U CN201720345259 U CN 201720345259U CN 206970683 U CN206970683 U CN 206970683U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a kind of system of recycling super enriching plant cutting.The system includes drying unit, pyrolysis installation, leaching device, purifier, electrochemical depositer and direct-combustion boiler.Pyrolysis installation is connected with drying unit, leaching device and direct-combustion boiler respectively, and purifier is connected with leaching device and electrochemical depositer respectively, and direct-combustion boiler is also connected with drying unit.Super enriching plant cutting is pyrolyzed by the utility model, and heavy metal and pyrolysis oil gas are further handled, both solved the pollution problem of heavy metal, the valuable resources such as metal and superheated steam can be provided again, and realized the unification of environment and economic benefit.
Description
Technical field
The utility model belongs to agricultural resources technical field and contaminated soil remediation field, in particular it relates to a kind of money
The system that sourceization utilizes super enriching plant cutting.
Background technology
Phytoremediation is a kind of method of heavy-metal contaminated soil reparation, by development in recent years, phytoremediation technology
The spies such as the compatibility with permanent, governance process the original position of its regulation effect, the inexpensive cost for the treatment of cost and the aesthetics of environment
Point, one of main path of contaminated soil improvement is increasingly becoming, and has initially entered industrialization initial stage.In China native country
Have found ciliate desert-grass (enrichment arsenic), Berkheya coddii plants (enriching nickel), Sedum alfredii Hance (Zn accumulation), Brassicacam
A variety of super enriching plants such as pestris (enriched lead or cadmium).Prior art is concentrated mainly on the screening of super enriching plant, chelating lures
Lead reparation, Arbuscular Mycorrhizal Fungi reinforcing, gene technology, agronomy management and field measure etc..And on restoration of soil polluted by heavy metal after
Plant harvest thing Treatment and recovery technology, research report both domestic and external is seldom, and is essentially all that simple experiment is visited
Rope.
With realizing super enriching plant cutting effective processing and recycling, it is that phytoremediation technology system needs perfect one
Individual difficult point, and phytoremediation technology is in industrialization process, it is necessary in face of one of with key issue in the urgent need to address.This
It is due to that the plant that have accumulated plurality of heavy metal often makes heavy metal element return to soil by approach such as rotten, fallen leaves, because
This must make heavy metal element return to soil in approach such as plant defoliations, it is therefore necessary to plant body is gathered in before plant defoliation, and
By its timely harmless treatment.
Either the processing method of existing super enriching plant cutting can not effectively handle heavy metal, or it can not realize
The recycling of super enriching plant cutting, urgent need provide the processing method of a kind of environment and economic benefit win-win.
Utility model content
For overcome the deficiencies in the prior art, the utility model provide firstly a kind of recycling super enriching plant and receive
The system for obtaining thing, including：
Drying unit, exported provided with drying material entrance, high-temperature flue gas entry and drying material；
Pyrolysis installation, provided with pyrolysis feed entrance, combustible gas entrance, pyrolytic carbon outlet and high-temperature oil gas outlet, the heat
Solution feed(raw material)inlet is connected with the drying material outlet of the drying unit；
Leaching device, provided with leaching agent entrance, pyrolytic carbon entrance, charcoal outlet and leachate outlet, the pyrolytic carbon
Entrance is connected with the pyrolytic carbon outlet of the pyrolysis installation；
Purifier, exported provided with zinc powder entrance, leachate entrance and scavenging solution, the leachate entrance and the leaching
The leachate outlet of device is connected；
Electrochemical depositer, provided with scavenging solution entrance, heavy metal outlet and electrodeposition waste liquid outlet, the scavenging solution entrance
It is connected with the scavenging solution outlet of the purifier；
Direct-combustion boiler, exported provided with high-temperature oil gas entrance, water inlet, high-temperature flue gas outlet and superheated steam, the high temperature
Oil gas entrance is connected with the high-temperature oil gas outlet of the pyrolysis installation, the high-temperature flue gas outlet and the high temperature of the drying unit
Smoke inlet is connected.
Further, the system also includes：
Steam turbine, provided with superheated steam entrance, condensation-water drain and generating set, the superheated steam entrance with it is described remaining
The superheated steam outlet of heat boiler is connected.
Further, the leaching device is additionally provided with ammonia inlet, the electrodeposition waste liquid outlet of the electrochemical depositer
It is connected with the leaching agent entrance of the leaching device.
Further, the system also includes：
Reducing mechanism, provided with crushing feed(raw material)inlet and crushed material outlet, the crushing feed(raw material)inlet and the drying unit
Drying material outlet be connected；
Briquetting device, provided with briquetting feed(raw material)inlet and the outlet of material bag, the briquetting feed(raw material)inlet and the reducing mechanism
Crushed material outlet is connected, and the material bag outlet is connected with the pyrolysis feed entrance of the pyrolysis installation.
Further, the anode material of the electrochemical depositer is aluminium sheet or stainless steel plate, and cathode material is high-purity
Graphite, apply ruthenium titanium plate, boronation titanium plate, titanium carbide or zirconium boride.
Super enriching plant cutting is pyrolyzed by the utility model, and heavy metal and pyrolysis oil gas have been carried out further
Ground processing, had both solved the pollution problem of heavy metal, and can provide the valuable resources such as metal and superheated steam again, realize environment
With the unification of economic benefit.
Brief description of the drawings
Fig. 1 is that a kind of structure of the system of recycling super enriching plant cutting in the utility model embodiment is shown
It is intended to.
Embodiment
Below in conjunction with drawings and examples, specific embodiment of the present utility model is described in more details, with
Just the advantages of better understood when scheme of the present utility model and its various aspects.However, specific implementations described below
Mode and embodiment are for illustrative purposes only, rather than to limitation of the present utility model.
Filled as shown in figure 1, the system of recycling super enriching plant cutting provided by the utility model includes drying
Put 1, reducing mechanism 2, briquetting device 3, pyrolysis installation 4, leaching device 5, purifier 6, electrochemical depositer 7, direct combustion pot
Stove 8 and steam turbine 9.
Drying unit 1 is used to dry super enriching plant cutting, contributes to super enriching plant cutting in pyrolysis installation 4
Preferably it is pyrolyzed.Drying unit 1 is provided with drying material entrance, high-temperature flue gas entry and drying material outlet.
Reducing mechanism 2 is used to crush super enriching plant cutting, provided with feed(raw material)inlet and crushed material outlet is crushed, crushes former
Material entrance is connected with the drying material outlet of drying unit 1.
Briquetting device 3 is used for the broken super enriching plant cutting after crushing and is pressed into material bag, to be preferably sent into heat
Solve device 4.Briquetting device 3 is provided with briquetting feed(raw material)inlet and the outlet of material bag, and briquetting feed(raw material)inlet and the crushed material of reducing mechanism 2 go out
Mouth is connected.
Pyrolysis installation 4 is used to be pyrolyzed super enriching plant cutting.Pyrolysis installation 4 is provided with pyrolysis feed entrance, combustible gas enters
Mouth, pyrolytic carbon outlet and high-temperature oil gas outlet, pyrolysis feed entrance are connected with the material bag outlet of briquetting device 3.
Leaching device 5 is used to leach heavy metal from pyrolytic carbon.Leaching device is provided with leaching agent entrance, pyrolytic carbon enters
Mouth, ammonia inlet, charcoal outlet and leachate outlet, pyrolytic carbon entrance are connected with the pyrolytic carbon outlet of pyrolysis installation 4.
Impurity element of the purifier 6 in zinc dust precipitation leachate, obtains scavenging solution.Purifier 6 enters provided with zinc powder
Mouth, leachate entrance and scavenging solution outlet, leachate entrance are connected with the leachate outlet of leaching device 5.
Electrochemical depositer 7 is used to carry out electrochemical deposition reaction, heavy metal is removed from scavenging solution.Electrochemistry is sunk
Product device 7 is provided with scavenging solution entrance, heavy metal outlet and electrodeposition waste liquid outlet, the scavenging solution of scavenging solution entrance and purifier 6
Outlet is connected, and electrodeposition waste liquid outlet is connected with the leaching agent entrance of leaching device 5.
Direct-combustion boiler 8 is used for combustion high temperature oil gas, and caused heat prepares superheated steam, height caused by burning with water heat exchange
Warm flue gas is used for drying unit 1 and dries super enriching plant cutting.Direct-combustion boiler 8 is provided with high-temperature oil gas entrance, water inlet, high temperature
Exhanst gas outlet and superheated steam outlet, the high-temperature oil gas entrance are connected with the high-temperature oil gas outlet of pyrolysis installation 4, high-temperature flue gas
Outlet is connected with the high-temperature flue gas entry of drying unit 1.
Steam turbine 9 is used for steam-electric power.Steam turbine 9 is provided with superheated steam entrance, condensation-water drain and generating set, overheat
Steam inlet is connected with the superheated steam outlet of waste heat boiler 8.
Super enriching plant cutting is pyrolyzed by the utility model, and heavy metal and pyrolysis oil gas have been carried out further
Ground processing, had both solved the pollution problem of heavy metal, and can provide the valuable resources such as metal and superheated steam again, realize environment
With the unification of economic benefit.
The pyrolysis installation that the utility model uses is heat carrier heat accumulating type rotating bed, and the thermal efficiency is high, reaches more than 86%.Heat
It is high temperature anoxybiotic environment in solution device, pyrolysis devolatilization gas completely cuts off with high-temperature flue gas, avoids secondary pollution.Material in pyrolytic process
Relative material bed is static, is not pressurized, does not stir, and radiation tube fluid and reaction burner hearth are completely isolated, avoid and produce asking for flying dust
Topic.
In system shown in Fig. 1, superheated steam is used to generate electricity, and realizes recycling for resource.The utility model its
In his embodiment, superheated steam also can separately do him and use.
In system shown in Fig. 1, after electrodeposition waste liquid supplement ammonia, it is used further to leach heavy metal, not only solves electrodeposition waste liquid
The problem of difficult is handled, also a saving leaching agent, reduces production cost.In the utility model others embodiment, electrodeposition gives up
Discharge system after liquid can also be handled.
In system shown in Fig. 1, after super enriching plant cutting is dried, by crushing and being pyrolyzed again after briquetting.It is aobvious
So, super enriching plant cutting also can be directly pyrolyzed without crushing and briquetting after drying.
In the utility model preferred embodiment, the anode material of electrochemical depositer is aluminium sheet or stainless steel plate,
Cathode material is high purity graphite, applies ruthenium titanium plate, boronation titanium plate, titanium carbide or zirconium boride.High purity graphite, apply ruthenium titanium plate, titanium boride
Plate, titanium carbide and zirconium boride are inert metals, and obtained electrowinning quality is good, nor can produce secondary pollution.
Super enriching plant cutting is handled using system provided by the utility model, heavy metal recovery rate is high.
Below with reference to specific embodiment, the utility model is illustrated.Institute's taking technique condition value in following embodiments
It is exemplary, its desirable number range is as shown in foregoing utility model content.Detection method used in following embodiments
It is the conventional detection method of the industry.
Embodiment 1
The present embodiment utilizes super enriching plant cutting using the system resourceization shown in Fig. 1.It is super used in the present embodiment
Enriching plant cutting is alfalfa, and raw aqueous rate is 42.7wt%, and the concentration of lead is 694mg/kg (dry matter weight).Specifically
Process is as follows：
11) 1t (ton) alfalfas raw material is sent into dryer 1, drying temperature is 80 DEG C, and being dried to moisture is
25.2wt%, then it is sent into pulverizer 2 and is crushed to 10cm or so, and be sent into cuber 3 and carry out briquetting, the heap density for expecting bag is
0.3t/m3。
12) alfalfa after briquetting is sent into heat accumulating type rotating bed pyrolysis installation 4, wherein pyrolysis temperature is 600 DEG C, pyrolysis
Time is 50min, and pyrolysis is incubated 30min after terminating, and obtains pyrolytic carbon and high-temperature oil gas.
13) caused pyrolytic carbon is delivered to leaching device 5, using (NH4)2CO3-NH3-H2O systems leach, and are leached
Liquid and charcoal.[NH4]+Concentration be 2mol/L, the concentration of ammoniacal liquor is 1mol/L；The solid-to-liquid ratio of leaching step is 2:1, leach
Time is 300min, and extraction temperature is 50 DEG C.
14) leachate is sent into purifier 6, with the impurity element in zinc dust precipitation leachate, obtains scavenging solution.
15) scavenging solution feeding electrochemical depositer 7 is subjected to electrochemical deposition, obtains heavy metal.Electrochemical deposition fills
The anode material put is stainless steel plate, and cathode material is high purity graphite.Current efficiency in electrochemical deposition process is 92%.
16) high-temperature oil gas feeding direct-combustion boiler 8 is burnt, caused heat prepares superheated steam with water heat exchange.Cross
Vapours generates electricity into steam turbine 9, and caused high-temperature flue gas, which is sent into dryer 1, dries alfalfa.
The lead of the present embodiment recovery is 0.29kg, and the rate of recovery is about 73%, generating 307kwh.
Embodiment 2
The present embodiment utilizes super enriching plant cutting using the system resourceization shown in Fig. 1.It is super used in the present embodiment
Enriching plant cutting is ciliate desert-grass, and raw aqueous rate is 50.6wt%, and the concentration of arsenic is 2645mg/kg (dry matter weight).Tool
Body process is as follows：
21) 1t ciliate desert-grass raw material is sent into dryer 1, drying temperature is 110 DEG C, and being dried to moisture is
22.5wt%, then it is sent into pulverizer 2 and is crushed to 10cm or so, and be sent into cuber 3 and carry out briquetting, the heap density for expecting bag is
0.4t/m3。
22) ciliate desert-grass after briquetting is sent into heat accumulating type rotating bed pyrolysis installation 4, wherein pyrolysis temperature is 400 DEG C, pyrolysis
Time is 60min, and pyrolysis is incubated 45min after terminating, and obtains pyrolytic carbon and high-temperature oil gas.
23) caused pyrolytic carbon is delivered to leaching device 5, using (NH4)2CO3-NH3-H2O systems leach, and are leached
Liquid and charcoal.[NH4]+Concentration be 6mol/L, the concentration of ammoniacal liquor is 4mol/L；The solid-to-liquid ratio of leaching step is 3:1, leach
Time is 60min, and extraction temperature is 30 DEG C.
24) leachate is sent into purifier 6, with the impurity element in zinc dust precipitation leachate, obtains scavenging solution.
25) scavenging solution feeding electrochemical depositer 7 is subjected to electrochemical deposition, obtains heavy metal.Electrochemical deposition fills
The anode material put is stainless steel plate, and cathode material is painting ruthenium titanium plate.Current efficiency in electrochemical deposition process is 93%.
26) high-temperature oil gas feeding direct-combustion boiler 8 is burnt, caused heat prepares superheated steam with water heat exchange.Cross
Vapours generates electricity into steam turbine 9, and caused high-temperature flue gas, which is sent into dryer 1, dries ciliate desert-grass.
The arsenic of the present embodiment recovery is 1.06kg, and the rate of recovery is about 81%, generating 389kwh.
Embodiment 3
The present embodiment utilizes super enriching plant cutting using the system resourceization shown in Fig. 1.It is super used in the present embodiment
Enriching plant cutting is alfalfa, and raw aqueous rate is 45.7wt%, and the concentration of lead is 726mg/kg (dry matter weight).Specifically
Process is as follows：
31) 1t (ton) alfalfas raw material is sent into dryer 1, drying temperature is 95 DEG C, and being dried to moisture is
22.5wt%, then it is sent into pulverizer 2 and is crushed to 10cm or so, and be sent into cuber 3 and carry out briquetting, the heap density for expecting bag is
0.2t/m3。
32) alfalfa after briquetting is sent into heat accumulating type rotating bed pyrolysis installation 4, wherein pyrolysis temperature is 700 DEG C, pyrolysis
Time is 30min, and pyrolysis is incubated 20min after terminating, and obtains pyrolytic carbon and high-temperature oil gas.
33) caused pyrolytic carbon is delivered to leaching device 5, using (NH4)2CO3-NH3-H2O systems leach, and are leached
Liquid and charcoal.[NH4]+Concentration be 10mol/L, the concentration of ammoniacal liquor is 6mol/L；The solid-to-liquid ratio of leaching step is 5:1, leach
Time is 30min, and extraction temperature is 40 DEG C.
34) leachate is sent into purifier 6, with the impurity element in zinc dust precipitation leachate, obtains scavenging solution.
35) scavenging solution feeding electrochemical depositer 7 is subjected to electrochemical deposition, obtains heavy metal.Electrochemical deposition fills
The anode material put is aluminium sheet, and cathode material is titanium carbide.Current efficiency in electrochemical deposition process is 94%.
36) high-temperature oil gas feeding direct-combustion boiler 8 is burnt, caused heat prepares superheated steam with water heat exchange.Cross
Vapours generates electricity into steam turbine 9, and caused high-temperature flue gas, which is sent into dryer 1, dries alfalfa.
The lead of the present embodiment recovery is 0.307kg, and the rate of recovery is about 78%, generating 321kwh.
It was found from above-described embodiment, using PROCESS FOR TREATMENT super enriching plant cutting provided by the utility model, heavy metal
Rate of recovery height and non-secondary pollution.
To sum up, super enriching plant cutting is pyrolyzed by the utility model, and heavy metal and pyrolysis oil gas are carried out
Further handle, both solved the pollution problem of heavy metal, the valuable resources such as metal and superheated steam can be provided again, realize
The unification of environment and economic benefit.
Further, the utility model will be pyrolyzed high-temperature flue gas caused by oil gas burning for drying super enriching plant harvest
Thing, most of recycling of heat is realized, reduces process costs.
In addition, the pyrolysis installation that the utility model uses is heat carrier heat accumulating type rotating bed, the thermal efficiency is high, reach 86% with
On.It is high temperature anoxybiotic environment in pyrolysis installation, pyrolysis devolatilization gas completely cuts off with high-temperature flue gas, avoids secondary pollution.Pyrolytic process
The relative material bed of middle material is static, is not pressurized, does not stir, and radiation tube fluid and reaction burner hearth are completely isolated, avoid generation and fly
The problem of grey.
Obviously, above-described embodiment is only intended to clearly illustrate the utility model example, and not to embodiment party
The restriction of formula.For those of ordinary skill in the field, other differences can also be made on the basis of the above description
The change or variation of form.There is no necessity and possibility to exhaust all the enbodiments.And thus amplify out aobvious and
Among the change or variation being clear to are still in the scope of protection of the utility model.
Claims (5)
1. a kind of system of recycling super enriching plant cutting, including：
Drying unit, exported provided with drying material entrance, high-temperature flue gas entry and drying material；
Pyrolysis installation, it is former provided with pyrolysis feed entrance, combustible gas entrance, pyrolytic carbon outlet and high-temperature oil gas outlet, the pyrolysis
Material entrance is connected with the drying material outlet of the drying unit；
Leaching device, provided with leaching agent entrance, pyrolytic carbon entrance, charcoal outlet and leachate outlet, the pyrolytic carbon entrance
It is connected with the pyrolytic carbon outlet of the pyrolysis installation；
Purifier, exported provided with zinc powder entrance, leachate entrance and scavenging solution, the leachate entrance and the leaching device
Leachate outlet be connected；
Electrochemical depositer, provided with scavenging solution entrance, heavy metal outlet and electrodeposition waste liquid outlet, the scavenging solution entrance and institute
The scavenging solution outlet for stating purifier is connected；
Direct-combustion boiler, exported provided with high-temperature oil gas entrance, water inlet, high-temperature flue gas outlet and superheated steam, the high-temperature oil gas
Entrance is connected with the high-temperature oil gas outlet of the pyrolysis installation, the high-temperature flue gas outlet and the high-temperature flue gas of the drying unit
Entrance is connected.
2. system according to claim 1, it is characterised in that the system also includes：
Steam turbine, provided with superheated steam entrance, condensation-water drain and generating set, the superheated steam entrance and the direct combustion pot
The superheated steam outlet of stove is connected.
3. system according to claim 1, it is characterised in that the leaching device is additionally provided with ammonia inlet, the electrification
The electrodeposition waste liquid outlet for learning precipitation equipment is connected with the leaching agent entrance of the leaching device.
4. system according to claim 1, it is characterised in that the system also includes：
Reducing mechanism, it is described to crush feed(raw material)inlet and the baking of the drying unit provided with crushing feed(raw material)inlet and crushed material outlet
Drier outlet is connected；
Briquetting device, provided with briquetting feed(raw material)inlet and the outlet of material bag, the briquetting feed(raw material)inlet and the crushing of the reducing mechanism
Material outlet is connected, and the material bag outlet is connected with the pyrolysis feed entrance of the pyrolysis installation.
5. system according to claim 1, it is characterised in that the anode material of the electrochemical depositer be aluminium sheet or
Stainless steel plate, cathode material are high purity graphite, apply ruthenium titanium plate, boronation titanium plate, titanium carbide or zirconium boride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720345259.9U CN206970683U (en) | 2017-04-01 | 2017-04-01 | A kind of system of recycling super enriching plant cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720345259.9U CN206970683U (en) | 2017-04-01 | 2017-04-01 | A kind of system of recycling super enriching plant cutting |
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| Publication Number | Publication Date |
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| CN206970683U true CN206970683U (en) | 2018-02-06 |
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ID=61415270
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| CN201720345259.9U Expired - Fee Related CN206970683U (en) | 2017-04-01 | 2017-04-01 | A kind of system of recycling super enriching plant cutting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939376A (en) * | 2017-04-01 | 2017-07-11 | 北京神源环保有限公司 | A kind of system and method for recycling super enriching plant cutting |
-
2017
- 2017-04-01 CN CN201720345259.9U patent/CN206970683U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939376A (en) * | 2017-04-01 | 2017-07-11 | 北京神源环保有限公司 | A kind of system and method for recycling super enriching plant cutting |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20200220 Address after: No. 1391, south side, 10th floor, new material venture building, No. 7, Fenghui Middle Road, Haidian District, Beijing Patentee after: Beijing Jiejing Environmental Protection Technology Co.,Ltd. Address before: 102200 Beijing city Changping District Machi Town cow Road No. 18 Patentee before: BEIJING SHENYUAN ENVIRONMENTAL PROTECTION Co.,Ltd. |
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Granted publication date: 20180206 |