CN108686622A - The preparation facilities and preparation method of a kind of modified biomass charcoal for soil remediation - Google Patents
The preparation facilities and preparation method of a kind of modified biomass charcoal for soil remediation Download PDFInfo
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- CN108686622A CN108686622A CN201810970923.8A CN201810970923A CN108686622A CN 108686622 A CN108686622 A CN 108686622A CN 201810970923 A CN201810970923 A CN 201810970923A CN 108686622 A CN108686622 A CN 108686622A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0222—Compounds of Mn, Re
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/485—Plants or land vegetals, e.g. cereals, wheat, corn, rice, sphagnum, peat moss
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Oil, Petroleum & Natural Gas (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The present invention provides a kind of preparation facilities of the modified biomass charcoal for soil remediation; pulverizer is connect with the biomass conveyance conduit for conveying biomass; the biomass is agriculture and forestry organic waste material; pulverizer is also connect with comminutor and biomass the top of the warehouse by pipeline successively; the bottom in biomass storehouse is connected by one end of pipeline and conveyer; the other end of conveyer is connected by the lower sidewall of pipeline and elevator, and the top of elevator is connect by pipeline with biomass inlet;Biomass carbon outlet is connect with cooler, biomass carbon storage tank and biomass carbon charge door successively by pipeline;Discharge port is connect with filter and dryer successively by pipeline.The preparation facilities of modified biomass charcoal of the present invention for soil remediation can realize automation, scale processing, it is easy to accomplish industrialization.The present invention also provides a kind of preparation methods of the modified biomass charcoal for soil remediation.
Description
Technical field
The present invention relates to soil remediation technology fields, more particularly to a kind of modified biomass charcoal for soil remediation
Preparation facilities and preparation method.
Background technology
With the rapid industrial development in our country, especially along with the fast development of the industries such as mining, non-ferrous metal metallurgy,
A large amount of heavy metal (discharge of such as lead and cadmium is more universal) is discharged into soil environment in its production process, at present soil
Heavy metal pollution causes huge threat to China's grain security and food security.Gentrify is by heavy metal pollution
Soil ensures that China's grain security has become a top priority.
The method for reducing or repairing low heavy metal in soil content at present has very much, but takes longer and effect and not enough manage
Think.At home and abroad have correlative study using activated carbon from activated sludge absorption fixing soil heavy metal to report, but directly using life
Substance charcoal reduces heavy metal in soil, and the effect is unsatisfactory.Biomass carbon itself is impure and absorption stabilization efficiency is relatively low, urgently
Need to seek a kind of effective biomass carbon modified measures to further enhance its heavy metal adsorption.
Invention content
In view of the above technical problems, the purpose of the present invention is to provide a kind of modified biomass charcoals for soil remediation
Preparation facilities, to realize industrialized production;The present invention also provides a kind of preparations of the modified biomass charcoal for soil remediation
Method.
The technical solution adopted by the present invention is:
A kind of preparation facilities of modified biomass charcoal for soil remediation, including pulverizer, comminutor, biomass storehouse,
Conveyer, elevator, retort, cooler, modified-reaction device, blender, biomass carbon storage tank, filter and dryer;Institute
It states and is provided with biomass inlet, carbonization gas outlet and thermometer hole at the top of retort, the top of the charing furnace sidewall is equipped with flue gas
The lower part of outlet, the charing furnace sidewall is exported equipped with biomass carbon;Biomass carbon is equipped at the top of the modified-reaction device to feed
The lower part of mouth, modifying agent charge door and temperature-measuring port, the modified-reaction device side wall is equipped with discharge port, is set in the modified-reaction device
There are blender, the pulverizer to be connect with the biomass conveyance conduit for conveying biomass, the biomass is discarded for agricultural
Object, the pulverizer are also connect with the comminutor and the biomass the top of the warehouse by pipeline successively, the biomass storehouse
Bottom is connect by pipeline with one end of the conveyer, the side that the other end of the conveyer passes through pipeline and the elevator
Wall lower part connects, and the top of the elevator is connect by pipeline with the biomass inlet;The biomass carbon outlet passes through
Pipeline is connect with the cooler, the biomass carbon storage tank and the biomass carbon charge door successively;The discharge port passes through
Pipeline is connect with the filter and the dryer successively;Pipeline between the discharge port and the filter is equipped with valve
Door.
The preparation facilities of modified biomass charcoal of the present invention for soil remediation, wherein the blender includes
Motor, agitating shaft and stirring blade, the agitating shaft upper end, which passes through, to be connect at the top of the modified-reaction device with the motor, described
Stirring blade includes upper layer stirring blade and lower layer's stirring blade, and the upper layer stirring blade and lower layer's stirring blade are
Two hinged joint paddle stirring blades, the upper layer stirring blade overlook 90 degree each other with lower layer's stirring blade.
The preparation facilities of modified biomass charcoal of the present invention for soil remediation, wherein the stirring blade by
Stainless steel material is made, and the modified-reaction device is made of corrosion-resistant stainless steel material.
The present invention also provides a kind of preparation methods of the modified biomass charcoal for soil remediation, include the following steps:
(a) raw material preparation:The agriculture and forestry organic waste material is cleaned up with tap water, natural air drying;
(b) it crushes:Then the agriculture and forestry organic waste material pulverizer is sent by biomass conveyance conduit to crush,
The agriculture and forestry organic waste material granularity after crushing is 10-50 mesh;
(c) it is granulated:The agriculture and forestry organic waste material after being crushed in step (b) is sent into the comminutor and is granulated, is made
Particle is obtained, the particle, which is passed through the conveyer, is sent into the elevator;
(d) preparation of biomass carbon:By particle described in step (c) by being sent into the retort at the top of the elevator
In in 400-600 DEG C of temperature lower calcination 4-5h, obtain biomass carbon, the biomass carbon is sent into after being cooled down by the cooler
The biomass carbon storage tank;
(e) modification of biomass carbon:Described in the biomass carbon in the biomass carbon storage tank is sent by pipeline
Modifying agent is added by the modifying agent charge door in modified-reaction device, and heated at constant temperature 1.5-2h at a temperature of 90-100 DEG C passes through
It is constant that the filter filters the pH to filtrate;The modifying agent is the KMnO of 0.2mo1/L4Solution, the phosphorus of a concentration of 30wt%
The dilution heat of sulfuric acid of acid solution or concentration 10wt%;
(f) it dries:Filtered filter residue in step (e) is sent into dryer, 7-8h is dried at 75-80 DEG C, obtains product.
The preparation method of modified biomass charcoal of the present invention for soil remediation, wherein agriculture described in step (a)
Woods waste is stalk, sawdust, bamboo scraps, branch, rice husk and shell.
The preparation method of modified biomass charcoal of the present invention for soil remediation, wherein agriculture described in step (a)
Woods waste is stalk.
The preparation method of modified biomass charcoal of the present invention for soil remediation, wherein described in step (d)
Particle at the top of the elevator by being sent into the retort in 500-550 DEG C of temperature lower calcination 4.5h.
The preparation method of modified biomass charcoal of the present invention for soil remediation, wherein raw described in step (e)
The mass volume ratio of substance charcoal and the modifying agent is 1:8-1:10kg/L.
The preparation method of modified biomass charcoal of the present invention for soil remediation, wherein 100 in step (f)
Heated at constant temperature 1.5-2h at a temperature of DEG C.
Advantageous effect of the present invention:
The preparation facilities of modified biomass charcoal of the present invention for soil remediation, can realize automation, scale
Change is handled, it is easy to accomplish industrialization.
The preparation method of modified biomass charcoal of the present invention for soil remediation, after testing, through the preparation method
Obtained modified biomass charcoal has strong suction-operated to the heavy metal ion in soil, while occurring with heavy metal ion
Mineralising reaction;The modified biomass charcoal after heavy metal ion and the heavy metal after mineralising are adsorbed to strong acid and highly basic with stronger
Chemical stability is not absorbed by plants to reach the heavy metal ion of permanent removal free state.
Description of the drawings
Fig. 1 is the structural schematic diagram of the preparation facilities of the modified biomass charcoal of the present invention for soil remediation.
Below in conjunction with specific embodiments and the drawings, the invention will be further described.
Specific implementation mode
Embodiment 1
As shown in Figure 1, a kind of preparation facilities of modified biomass charcoal for soil remediation, including pulverizer 1, comminutor
2, biomass storehouse 3, conveyer 4, elevator 5, retort 6, cooler 7, modified-reaction device 8, blender 9, biomass carbon storage tank
10, filter 12 and dryer 13;6 top of retort is provided with biomass inlet 61, carbonization gas outlet 62 and thermometer hole 63, charcoal
The top for changing 6 side wall of stove is equipped with exhanst gas outlet 64, and the lower part of 6 side wall of retort is equipped with biomass carbon and exports 65;Modified-reaction device 8
Top is equipped with biomass carbon charge door 81, modifying agent charge door 82 and temperature-measuring port 83, and modifying agent charge door 82 is for being added modification
The lower part of agent, 8 side wall of modified-reaction device is equipped with discharge port 84, and blender 9 is equipped in modified-reaction device 8, and blender 9 includes motor
91, agitating shaft 92 and stirring blade, 92 upper end of agitating shaft pass through 8 top of modified-reaction device to be connect with motor 91, the paddle
Piece includes upper layer stirring blade 93 and lower layer's stirring blade 94, and upper layer stirring blade 93 and lower layer's stirring blade 94 are two hinged joints
Paddle stirring blade, the stirring blade are made of stainless steel material, and upper layer stirring blade 93 is overlooked with lower layer's stirring blade 94
90 degree each other;The modified-reaction device 8 is made of corrosion-resistant stainless steel material;
Pulverizer 1 is connect with the biomass conveyance conduit for conveying biomass, and the biomass is agriculture and forestry organic waste material, powder
Broken machine 1 is also connect with comminutor 2 and 3 top of biomass storehouse by pipeline successively, and the bottom in biomass storehouse 3 passes through pipeline and conveying
One end of machine 4 connects, and the other end of conveyer 4 is connect by pipeline with the lower sidewall of elevator 5, and the top of elevator 5 is logical
Piping is connect with biomass inlet 61;Biomass carbon outlet 65 by pipeline successively with cooler 7, biomass carbon storage tank 10 and
Biomass carbon charge door 81 connects;Discharge port 84 is connect with filter 12 and dryer 13 successively by pipeline;84 He of discharge port
Pipeline between filter 12 is equipped with valve 11.
A kind of preparation method of modified biomass charcoal for soil remediation, includes the following steps:
(a) raw material preparation:The agriculture and forestry organic waste material is cleaned up with tap water, natural air drying, the agriculture and forestry organic waste material
For stalk;
(b) it crushes:Then the agriculture and forestry organic waste material is sent into pulverizer 1 by biomass conveyance conduit to crush, powder
The agriculture and forestry organic waste material granularity after broken is 10-50 mesh;
(c) it is granulated:The agriculture and forestry organic waste material after being crushed in step (b) is sent into comminutor 2 and is granulated, obtained
The particle is passed through conveyer 4 and is sent into elevator 5 by grain;
(d) preparation of biomass carbon:By particle described in step (c) by the top of elevator 5 be sent into retort 6 in
500 DEG C of temperature lower calcination 4.5h, obtain biomass carbon, and the biomass carbon is sent into biomass carbon after being cooled down by cooler 7 and is stored up
Tank 10;
(e) modification of biomass carbon:The biomass carbon in biomass carbon storage tank 10 is sent by pipeline and is modified instead
Device 8 is answered, modifying agent is added by modifying agent charge door 82, the modifying agent is the KMnO of 0.2mo1/L4Solution, at 90-100 DEG C
At a temperature of heated at constant temperature 2h, by filter 12 filtering to filtrate pH it is constant;The biomass carbon and the KMnO4Solution
Mass volume ratio is 1:8kg/L;
(f) it dries:Filtered filter residue in step (e) is sent into dryer 13,7.5h is dried at 80 DEG C, obtains product.
Embodiment 2
The preparation facilities of a kind of modified biomass charcoal for soil remediation, with embodiment 1.
A kind of preparation method of modified biomass charcoal for soil remediation, includes the following steps:
(a) raw material preparation:The agriculture and forestry organic waste material is cleaned up with tap water, natural air drying, the agriculture and forestry organic waste material
For stalk;
(b) it crushes:Then the agriculture and forestry organic waste material is sent into pulverizer 1 by biomass conveyance conduit to crush, powder
The agriculture and forestry organic waste material granularity after broken is 10-50 mesh;
(c) it is granulated:The agriculture and forestry organic waste material after being crushed in step (b) is sent into comminutor 2 and is granulated, obtained
The particle is passed through conveyer 4 and is sent into elevator 5 by grain;
(d) preparation of biomass carbon:By particle described in step (c) by the top of elevator 5 be sent into retort 6 in
500 DEG C of temperature lower calcination 4.5h, obtain biomass carbon, and the biomass carbon is sent into biomass carbon after being cooled down by cooler 7 and is stored up
Tank 10;
(e) modification of biomass carbon:The biomass carbon in biomass carbon storage tank 10 is sent by pipeline and is modified instead
Device 8 is answered, modifying agent is added by modifying agent charge door 82, the modifying agent is the phosphoric acid solution of a concentration of 30wt%, in 90-
Heated at constant temperature 2h at a temperature of 100 DEG C, the pH by filter 12 filtering to filtrate are constant;The biomass carbon and the phosphoric acid are molten
The mass volume ratio of liquid is 1:10kg/L;
(f) it dries:Filtered filter residue in step (e) is sent into dryer 13,7.5h is dried at 80 DEG C, obtains product.
Embodiment 3
The preparation facilities of a kind of modified biomass charcoal for soil remediation, with embodiment 1.
A kind of preparation method of modified biomass charcoal for soil remediation, includes the following steps:
(a) raw material preparation:The agriculture and forestry organic waste material is cleaned up with tap water, natural air drying, the agriculture and forestry organic waste material
For stalk;
(b) it crushes:Then the agriculture and forestry organic waste material is sent into pulverizer 1 by biomass conveyance conduit to crush, powder
The agriculture and forestry organic waste material granularity after broken is 10-50 mesh;
(c) it is granulated:The agriculture and forestry organic waste material after being crushed in step (b) is sent into comminutor 2 and is granulated, obtained
The particle is passed through conveyer 4 and is sent into elevator 5 by grain;
(d) preparation of biomass carbon:By particle described in step (c) by the top of elevator 5 be sent into retort 6 in
500 DEG C of temperature lower calcination 4.5h, obtain biomass carbon, and the biomass carbon is sent into biomass carbon after being cooled down by cooler 7 and is stored up
Tank 10;
(e) modification of biomass carbon:The biomass carbon in biomass carbon storage tank 10 is sent by pipeline and is modified instead
Device 8 is answered, modifying agent is added by modifying agent charge door 82, the modifying agent is the dilution heat of sulfuric acid of concentration 10wt%, in 90-
Heated at constant temperature 1.5h at a temperature of 100 DEG C, the pH by filter 12 filtering to filtrate are constant;The biomass carbon and dilute sulphur
The mass volume ratio of acid solution is 1:10kg/L;
(f) it dries:Filtered filter residue in step (e) is sent into dryer 13,7.5h is dried at 80 DEG C, obtains product.
Comparative example 1
With differing only in for embodiment 1, the addition of the modified material is omitted, remaining is consistent.
Modified biomass charcoal is prepared using the method for embodiment 1-3 and comparative example 1 or biomass carbon is manured into soil again respectively
The field of metallization after 2 months, is compared, as a result as shown in table 1 below to changing before and after heavy metal in soil content.
1 heavy metal in soil ion concentration of table changes table
| Project | The Cd contents range of decrease (%) | The Pb contents range of decrease (%) | The Cu contents range of decrease (%) |
| Embodiment 1 | 54.6 | 46.8 | 50.1 |
| Embodiment 2 | 55.1 | 47.1 | 50.6 |
| Embodiment 3 | 54.9 | 45.4 | 51.2 |
| Comparative example 1 | 25.3 | 20.2 | 22.9 |
The modified biomass charcoal for soil remediation that this implementation 1-3 is prepared, in processing by the soil of heavy metal pollution
When earth, uniformly being mixed with polluted soil, adding proportion is the 2-8% of soil weight, and soil moisture content is kept to be not less than 20%,
Processing time is not less than 3 days, as shown in Table 1, it can be achieved that the fast long-acting stabilization of heavy metal in soil ion, weighs in addition, adsorbing
The heavy metal after modified biomass charcoal and mineralising after metal ion has stronger chemical stability to strong acid and highly basic.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
It encloses and is defined, under the premise of not departing from design spirit of the present invention, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made should all be fallen into the protection domain of claims of the present invention determination.
Claims (9)
1. a kind of preparation facilities of modified biomass charcoal for soil remediation, it is characterised in that:Including pulverizer (1), it is granulated
Machine (2), biomass storehouse (3), conveyer (4), elevator (5), retort (6), cooler (7), modified-reaction device (8), stirring
Device (9), biomass carbon storage tank (10), filter (12) and dryer (13);Biomass is provided at the top of the retort (6) to enter
The top of mouth (61), carbonization gas outlet (62) and thermometer hole (63), retort (6) side wall is equipped with exhanst gas outlet (64), institute
The lower part for stating retort (6) side wall is equipped with biomass carbon outlet (65);Add equipped with biomass carbon at the top of the modified-reaction device (8)
The lower part of material mouth (81), modifying agent charge door (82) and temperature-measuring port (83), modified-reaction device (8) side wall is equipped with discharge port
(84), blender (9) is equipped in the modified-reaction device (8), the pulverizer (1) and the biomass for conveying biomass are defeated
Send pipeline to connect, the biomass be agriculture and forestry organic waste material, the pulverizer (1) also by pipeline successively with the comminutor (2)
It is connected at the top of the biomass storehouse (3), one end that the bottom of the biomass storehouse (3) passes through pipeline and the conveyer (4)
Connection, the other end of the conveyer (4) are connect by pipeline with the lower sidewall of the elevator (5), the elevator (5)
Top connect with the biomass inlet (61) by pipeline;Biomass carbon outlet (65) by pipeline successively with it is described
Cooler (7), the biomass carbon storage tank (10) and the biomass carbon charge door (81) connection;The discharge port (84) passes through
Pipeline is connect with the filter (12) and the dryer (13) successively;The discharge port (84) and the filter (12) it
Between pipeline be equipped with valve.
2. the preparation facilities of the modified biomass charcoal according to claim 1 for soil remediation, it is characterised in that:It is described
Blender (9) includes motor (91), agitating shaft (92) and stirring blade, and agitating shaft (92) upper end passes through the modified-reaction
It is connect with the motor (91) at the top of device (8), the stirring blade includes upper layer stirring blade (93) and lower layer's stirring blade
(94), the upper layer stirring blade (93) and lower layer's stirring blade (94) are two hinged joint paddle stirring blades, it is described on
Layer stirring blade (93) overlooks 90 degree each other with lower layer's stirring blade (94).
3. the preparation facilities of the modified biomass charcoal according to claim 1 or 2 for soil remediation, it is characterised in that:
The stirring blade is made of stainless steel material, and the modified-reaction device (8) is made of corrosion-resistant stainless steel material.
4. the preparation method of the modified biomass charcoal for soil remediation described in claim 1-3 any one, feature exist
In:Include the following steps:
(a) raw material preparation:The agriculture and forestry organic waste material is cleaned up with tap water, natural air drying;
(b) it crushes:Then the agriculture and forestry organic waste material pulverizer (1) is sent by biomass conveyance conduit to crush,
The agriculture and forestry organic waste material granularity after crushing is 10-50 mesh;
(c) it is granulated:The agriculture and forestry organic waste material after being crushed in step (b) is sent into the comminutor (2) and is granulated, is made
The particle is passed through the conveyer (4) and is sent into the elevator (5) by particle;
(d) preparation of biomass carbon:By particle described in step (c) by being sent into the retort at the top of the elevator (5)
(6) in 400-600 DEG C of temperature lower calcination 4-5h in, biomass carbon is obtained, the biomass carbon is cooling by the cooler (7)
After be sent into the biomass carbon storage tank (10);
(e) modification of biomass carbon:Described in the biomass carbon in the biomass carbon storage tank (10) is sent by pipeline
Modifying agent, heated at constant temperature 1.5- at a temperature of 90-100 DEG C is added by the modifying agent charge door (82) in modified-reaction device (8)
2h, the pH by the filter (12) filtering to filtrate are constant;The modifying agent is the KMnO of 0.2mo1/L4Solution, concentration
For the phosphoric acid solution of 30wt% or the dilution heat of sulfuric acid of concentration 10wt%;
(f) it dries:Filtered filter residue in step (e) is sent into dryer (13), 7-8h is dried at 75-80 DEG C, obtains product.
5. the preparation method of the modified biomass charcoal according to claim 4 for soil remediation, it is characterised in that:Step
(a) agriculture and forestry organic waste material described in is stalk, sawdust, bamboo scraps, branch, rice husk and shell.
6. the preparation method of the modified biomass charcoal according to claim 4 for soil remediation, it is characterised in that:Step
(a) agriculture and forestry organic waste material described in is stalk.
7. the preparation method of the modified biomass charcoal according to claim 4 for soil remediation, it is characterised in that:It will step
Suddenly particle described in (d) at the top of the elevator (5) by being sent into the retort (6) in 500-550 DEG C of temperature lower calcination
4.5h。
8. the preparation method of the modified biomass charcoal according to claim 4 for soil remediation, it is characterised in that:Step
(e) mass volume ratio of biomass carbon described in and the modifying agent is 1:8-1:10kg/L.
9. the preparation method of the modified biomass charcoal for soil remediation according to claim 4-8 any one, special
Sign is:In step (f) at a temperature of 100 DEG C heated at constant temperature 1.5-2h.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109967033A (en) * | 2019-03-20 | 2019-07-05 | 武汉科技大学 | A kind of modified rice husk biomass carbon and preparation method thereof |
| CN111014254A (en) * | 2019-12-26 | 2020-04-17 | 郑州大学 | Red mud ecological restoration method and restoration system by using biomass |
| CN113198832A (en) * | 2020-01-31 | 2021-08-03 | 深圳市起源环保科技有限公司 | Soil improvement method using biomass charcoal |
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