CN109500062B - Preparation method of waste tire resource material improved by excess sludge - Google Patents
Preparation method of waste tire resource material improved by excess sludge Download PDFInfo
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- CN109500062B CN109500062B CN201811527217.2A CN201811527217A CN109500062B CN 109500062 B CN109500062 B CN 109500062B CN 201811527217 A CN201811527217 A CN 201811527217A CN 109500062 B CN109500062 B CN 109500062B
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- excess sludge
- pyrolytic carbon
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- waste
- waste tire
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- 239000010802 sludge Substances 0.000 title claims abstract description 50
- 239000010920 waste tyre Substances 0.000 title claims abstract description 44
- 239000000463 material Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 239000002296 pyrolytic carbon Substances 0.000 claims abstract description 36
- 239000002245 particle Substances 0.000 claims abstract description 27
- 238000002156 mixing Methods 0.000 claims abstract description 20
- 238000000197 pyrolysis Methods 0.000 claims abstract description 15
- 239000011230 binding agent Substances 0.000 claims abstract description 9
- 238000000227 grinding Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000007772 electrode material Substances 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims abstract description 3
- 239000002699 waste material Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 10
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 3
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 3
- 230000032770 biofilm formation Effects 0.000 claims description 3
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 3
- 229920000609 methyl cellulose Polymers 0.000 claims description 3
- 239000001923 methylcellulose Substances 0.000 claims description 3
- 235000010981 methylcellulose Nutrition 0.000 claims description 3
- -1 polyoxyethylene Polymers 0.000 claims description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 2
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 2
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- 239000000969 carrier Substances 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract 1
- 239000003575 carbonaceous material Substances 0.000 description 12
- 239000002028 Biomass Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000003610 charcoal Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical compound C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical compound C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000007777 multifunctional material Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention relates to a preparation method of a waste tire resource material improved by excess sludge, which comprises the following steps: grinding the waste tires into small particles, and carrying out oxygen-free high-temperature pyrolysis on the waste tire particles to form pyrolytic carbon; cleaning the pyrolytic carbon to remove substances such as ash, S and the like; ultrasonically mixing the residual sludge and pyrolytic carbon; adding a binder into the mixture and then continuing to perform ultrasonic mixing; and taking out the pyrolytic carbon adhered with the excess sludge from the mixture, and performing anaerobic high-temperature pyrolysis again to finally form the waste tire resource material improved by the excess sludge. The waste tire resource material modified by the excess sludge prepared by the invention has the characteristics of excellent biocompatibility, strong hydrophilicity and the like, can be used as a biological biofilm carrier, an adsorption material, an electrode material and the like, and has a very large application value in industrial production.
Description
Technical Field
The invention relates to a preparation method of a waste tire resource material improved by excess sludge, belonging to the field of new materials.
Background
In recent years, the demand for various types of motor vehicles and transportation has increased dramatically, with a concomitant dramatic increase in the number of scrap tires. Most of the scrap tires are deposited in landfills, which has become one of the most potentially hazardous waste disposal problems. At present, the recycling of waste tires by pyrolysis technology has become a research hotspot. The pyrolytic carbon is a main product of waste tire pyrolysis, has high carbon content, but because of the limitation of raw materials, the pyrolytic carbon contains a large amount of ash, inorganic impurities and the like, reduces the surface polarity of the pyrolytic carbon, influences the biocompatibility of the pyrolytic carbon, and limits the application of the pyrolytic carbon in the fields of agriculture, biology, environment and the like. Therefore, how to improve the performance of the pyrolytic carbon and improve the application value of the pyrolytic carbon becomes an important link for recycling and comprehensively utilizing waste tire resources.
In addition to the waste disposal problem caused by waste tires, the rational disposal of excess sludge is an environmental problem that is urgently needed to be solved. At present, sludge treatment mainly depends on landfill, incineration and composting, and with the enhancement of environmental awareness, the traditional methods of landfill, land utilization, incineration and the like of sludge are increasingly limited, and if the sludge cannot be properly treated, more serious secondary pollution can be caused. Therefore, finding new sludge resource utilization technology is receiving more and more attention. The excess sludge contains a large amount of nutrient elements such as microorganisms, biological remains, organic matters, N, P and the like, so that the excess sludge is subjected to anaerobic carbonization to form the biomass charcoal, the treatment problem of the biomass charcoal can be effectively solved, the biomass charcoal is recycled, and secondary utilization is realized. The biomass charcoal with good biocompatibility is used as a multifunctional material and has wide application in the fields of agriculture, biology and environment.
Disclosure of Invention
The invention aims to provide a preparation method of a waste tire resource material with improved excess sludge for improving the defects of the prior art, which organically combines waste tire pyrolytic carbon and excess sludge biomass carbon on the basis of realizing waste resource and widens the application range of the waste tire pyrolytic carbon.
The technical scheme adopted by the invention is as follows: a preparation method of a waste tire resource material improved by excess sludge comprises the following specific steps:
(1) taking a certain amount of waste rubber tires, and grinding the waste rubber tires into small particles;
(2) carrying out oxygen-free high-temperature pyrolysis on the ground tire particles to form pyrolytic carbon;
(3) cleaning the pyrolytic carbon to remove substances such as ash, S and the like;
(4) taking a certain amount of excess sludge, and ultrasonically mixing the excess sludge and pyrolytic carbon to obtain a mixture;
(5) adding a binder into the mixture, and performing ultrasonic mixing again;
(6) and performing anaerobic high-temperature pyrolysis again to finally prepare the waste tire resource material with improved residual sludge.
Preferably, the particle size of the waste rubber tire particles is 1mm to 1 cm. Preferably, N is used as the gas for carrying out the oxygen-free high-temperature pyrolysis on the tire particles in the step (2)2Or inert gas such as Ar; the temperature range is 300-1000 ℃, and the pyrolysis time is 1-10 h.
Preferably, the ultrasonic frequency in the step (4) is 40-100Hz, and the mixing time is 1-10 h.
Preferably, the concentration of the excess sludge in the step (4) is 0.1g/L-10g/L, and the addition amount of the excess sludge is 1-10 times of the mass of the tire.
Preferably, the binder in step (5) is methyl cellulose, hydroxyethyl cellulose, hydroxymethyl cellulose, carboxymethyl cellulose, polyoxyethylene, polyvinyl alcohol, or the like.
Preferably, the concentration of the binder in the step (5) is 0.01g/L-1 g/L; the addition amount of the binder is 2-15 times of the mass of the tire.
Preferably, the ultrasonic frequency in the step (5) is 50-100Hz, and the mixing time is 1-24 h.
Preferably, the temperature range of the oxygen-free high-temperature pyrolysis in the step (6) is 400-.
Furthermore, the prepared waste tire resource material improved by the excess sludge has the application range of biological biofilm carrier, electrode material or adsorbing material and the like.
Has the advantages that:
the beneficial effects of the above technical scheme are that: based on the principle of 'waste improvement-making good for others' and the like, the waste tire pyrolytic carbon and the excess sludge biomass carbon are organically combined, the defect of the waste tire pyrolytic carbon is overcome by utilizing the good biocompatibility of the excess sludge biomass carbon, the problem of reasonable disposal of waste is solved, and the novel carbon-carbon composite material of the tire pyrolytic carbon-the excess sludge biomass carbon, which has the advantages of good biocompatibility, strong hydrophilicity and the like, is prepared, can be used as a biofilm carrier, an electrode material and an adsorbing material, and the application range of the waste tire pyrolytic carbon is widened.
Drawings
FIG. 1 is a flow chart of a waste tire recycling material improved by excess sludge according to the present invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the following description is given in conjunction with the accompanying examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed.
Example 1
Taking 10g of waste rubber tires, crushing and grinding the waste rubber tires to form particles with the particle size of 1mm, wherein the tire particles are in the range of N2Pyrolyzing at 300 ℃ for 2h in an atmosphere to form pyrolytic carbon particles of waste tires, taking 100g of residual sludge with the concentration of 10g/L and the pyrolytic carbon particles to perform 40Hz ultrasonic mixing for 10h, adding 150g of methylcellulose with the concentration of 0.05g/L after mixing, and performing 50Hz ultrasonic mixing for 1 h. Then the pyrolytic carbon adhered with the excess sludge is added into N2And (3) pyrolyzing for 10h at 400 ℃ in the atmosphere to finally prepare the waste tire carbon material improved by the residual sludge. The prepared carbon material is used for biofilm formation, common waste tire pyrolytic carbon is used as a contrast, and the performance of the waste tire carbon material biofilm formation improved by the excess sludge is as shown in the following table.
| Name of Material | Film hanging time (d) |
| Pyrolytic carbon for common waste tire | 40 |
| Waste tire carbon material improved by residual sludge | 25 |
Example 2
Taking 20g of waste rubber tires, crushing and grinding the waste rubber tires to form particles with the particle size of 0.5cm, wherein the tire particles are in the range of N2Pyrolyzing at 600 ℃ for 5h in an atmosphere to form pyrolytic carbon particles of waste tires, taking 100g of residual sludge with the concentration of 5g/L and the pyrolytic carbon particles to perform 70Hz ultrasonic mixing for 6h, adding 200g of hydroxyethyl cellulose with the concentration of 0.5g/L after mixing, and performing 95Hz ultrasonic mixing for 12 h. Then the pyrolytic carbon adhered with the excess sludge is added into N2Pyrolyzing for 7h at 700 ℃ in the atmosphere to finally prepare the waste tire carbon material improved by the residual sludge. The prepared carbon material is used as an electrode material, common waste tire pyrolytic carbon is used as a contrast, and the electrochemical properties of the waste tire carbon material improved by the excess sludge are shown in the following table.
| Name of Material | Cyclic voltammetric peak current (mA) |
| Pyrolytic carbon for common waste tire | 1.6 |
| Waste tire carbon material improved by residual sludge | 3 |
Example 3
Taking 50g of waste rubber tires, crushing and grinding the waste rubber tires to form particles with the particle size of 1cm, placing the tire particles in Ar atmosphere,pyrolyzing for 10h at 1000 ℃ to form pyrolytic carbon particles of waste tires, taking 50g of residual sludge with the concentration of 0.1g/L and carrying out 100Hz ultrasonic mixing on the pyrolytic carbon particles for 2h, adding 100g of polyoxyethylene with the concentration of 1.0g/L after mixing, and carrying out 75Hz ultrasonic mixing for 24 h. Then the pyrolytic carbon adhered with the excess sludge is added into N2Pyrolyzing for 4h at 1000 ℃ in the atmosphere to finally prepare the waste tire carbon material improved by the residual sludge. The prepared carbon material is used for adsorbing materials, common waste tire pyrolytic carbon is used as a contrast, and phenol, phenanthrene and Cu are used2+The adsorption performance of the carbon material of the waste tire, which is used as the adsorption object and is modified by the residual sludge, is shown in the following table.
Waste tire carbon Material adsorption Performance Table with sludge modified under different conditions (adsorption Capacity ζ/(mg. g))
Claims (10)
1. A preparation method of a waste tire resource material improved by excess sludge comprises the following specific steps:
(1) taking a certain amount of waste rubber tires, and grinding the waste rubber tires into small particles;
(2) carrying out oxygen-free high-temperature pyrolysis on the ground tire particles to form pyrolytic carbon;
(3) cleaning the pyrolytic carbon;
(4) taking a certain amount of excess sludge, and ultrasonically mixing the excess sludge and pyrolytic carbon to obtain a mixture;
(5) adding a binder into the mixture, and performing ultrasonic mixing again;
(6) and performing anaerobic high-temperature pyrolysis again to finally prepare the waste tire resource material with improved residual sludge.
2. The method of claim 1, wherein: the particle size of the waste rubber tire particles is 1mm-1 cm.
3. Root of herbaceous plantThe method according to claim 1, characterized in that: in the step (2), N is used as gas for carrying out anaerobic high-temperature pyrolysis on the tire particles2Or Ar; the temperature range is 300-oAnd C, the pyrolysis time is 1-10 h.
4. The method of claim 1, wherein: the ultrasonic mixing frequency in the step (4) is 40-100Hz, and the ultrasonic mixing time is 1-10 h.
5. The method of claim 1, wherein: the concentration of the excess sludge in the step (4) is 0.1g/L-10g/L, and the addition amount of the excess sludge is 1-10 times of the mass of the tire.
6. The method of claim 1, wherein: the binder in the step (5) is methyl cellulose, hydroxyethyl cellulose, hydroxymethyl cellulose, carboxymethyl cellulose, polyoxyethylene or polyvinyl alcohol.
7. The method of claim 1, wherein: the concentration of the binder in the step (5) is 0.01g/L-1 g/L; the addition amount of the binder is 2-15 times of the mass of the tire.
8. The method of claim 1, wherein: the ultrasonic frequency in the step (5) is 50-100Hz, and the mixing time is 1-24 h.
9. The method of claim 1, wherein: the temperature range of the oxygen-free high-temperature pyrolysis in the step (6) is 400-oAnd C, the pyrolysis time is 2-10 h.
10. The method of claim 1, wherein: the prepared waste tire resource material improved by the excess sludge has the application range of biological biofilm formation carriers, electrode materials or adsorbing materials.
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| CN201811527217.2A CN109500062B (en) | 2018-12-13 | 2018-12-13 | Preparation method of waste tire resource material improved by excess sludge |
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| CN114144459B (en) * | 2019-07-25 | 2023-03-24 | 李铉昌 | Tire composition |
| CN111647907A (en) * | 2020-05-21 | 2020-09-11 | 天津大学 | Preparation method of self-supporting heteroatom-doped sludge carbon electrode material |
| CN114073932B (en) * | 2020-08-14 | 2024-04-30 | 中国石油天然气集团有限公司 | Oil adsorption material and preparation method thereof |
| CN116586402B (en) * | 2023-04-24 | 2023-12-05 | 中城院(北京)环境科技股份有限公司 | Decoration garbage treatment process adopting friction cleaning machine |
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| CN101012059A (en) * | 2006-12-08 | 2007-08-08 | 清华大学 | Method of manufacturing active carbon for waste water treatment using waste tyre |
| KR100793234B1 (en) * | 2007-03-14 | 2008-01-10 | 주식회사 지피알 | Apparatus for extracting sludge from waste tire |
| KR100847511B1 (en) * | 2007-05-17 | 2008-07-22 | 천명원 | Solid fuel and manufacturing method for the same |
| CN103666511B (en) * | 2013-09-04 | 2015-09-02 | 北京神雾环境能源科技集团股份有限公司 | Tire treatment system |
| CN104194420B (en) * | 2014-09-24 | 2016-07-06 | 青岛理工大学 | Method and device for producing low-ash carbon black by pyrolysis of waste tires |
| CN106566588A (en) * | 2016-11-08 | 2017-04-19 | 湖南万容科技股份有限公司 | Method for preparing forming fuel by utilizing sludge |
| CN107821090B (en) * | 2017-12-27 | 2019-09-27 | 大连地拓环境科技有限公司 | A kind of planting soil and preparation method thereof |
| CN107987866B (en) * | 2018-01-15 | 2023-06-30 | 陕西科技大学 | Device and method for efficiently depolymerizing solid waste by microwaves and co-producing bio-oil and biochar |
| CN108977250B (en) * | 2018-08-31 | 2024-05-28 | 南京林业大学 | Device and method for treating waste automobile tires and agricultural straw mixed fuel |
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