CN107081140A - A kind of water treatment absorbent based on coal gasification lime-ash and preparation method thereof - Google Patents

A kind of water treatment absorbent based on coal gasification lime-ash and preparation method thereof Download PDF

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Publication number
CN107081140A
CN107081140A CN201710370451.8A CN201710370451A CN107081140A CN 107081140 A CN107081140 A CN 107081140A CN 201710370451 A CN201710370451 A CN 201710370451A CN 107081140 A CN107081140 A CN 107081140A
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China
Prior art keywords
ash
coal gasification
gasification lime
water treatment
polyacrylamide solution
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CN201710370451.8A
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Chinese (zh)
Inventor
王云海
陈庆云
赵景联
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Xian Jiaotong University
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Xian Jiaotong University
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Priority to CN201710370451.8A priority Critical patent/CN107081140A/en
Publication of CN107081140A publication Critical patent/CN107081140A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/26Synthetic macromolecular compounds
    • B01J20/261Synthetic macromolecular compounds obtained by reactions only involving carbon to carbon unsaturated bonds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/281Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/285Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/308Dyes; Colorants; Fluorescent agents

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

A kind of water treatment absorbent based on coal gasification lime-ash of the present invention and preparation method thereof, is easy to implement, with low cost, realizes the comprehensive utilization to coal gasification lime-ash, reaches the standard of engineer applied, improves the comprehensive utilization ratio of coal resources.Methods described comprises the following steps, step 1, is mixed evenly for 0.1 0.5% polyacrylamide solution and obtains mixture coal gasification lime-ash and concentration;The mixed proportion of polyacrylamide solution and coal gasification lime-ash presses every 100 10000 grams of 10ml polyacrylamide solution mixed gas ashings slag;Step 2, it is 30% 60% ptfe emulsions concentration to be added in the mixture, continues to stir, mixes appropriate water, make the slurry of mixture pulp;The volume ratio of ptfe emulsion and polyacrylamide solution is 3:1 to 1:3;Step 3, slurry is molded by extrusion shearing, then the water treatment absorbent based on coal gasification lime-ash in stripping and slicing shape is obtained after drying.

Description

A kind of water treatment absorbent based on coal gasification lime-ash and preparation method thereof
Technical field
The invention belongs to environmental protection field for the treatment of of solid waste, it is related to environment-friendly materials and its preparation, specially a kind of base In water treatment absorbent of coal gasification lime-ash and preparation method thereof.
Background technology
Coal gasification lime-ash is the later residue of coal HTHP gasification, is the maximum solid waste of coal chemical technology amount, Main component is SiO2、Al2O3, CaO and residual carbon etc., normally about 70-80% composition is inorganic amorphous aluminosilicate glass The carbon residual of body, about 10-30%, other are the impurity such as a small amount of iron, alkali metal.Coal gasification lime-ash is different from flyash, carbon content Much higher, usual humidity is also also more larger than larger, lime-ash granularity.Coal gasification lime-ash is often loose structure, and specific surface area is larger, With the good potential quality for making adsorbent.But in this gasification lime-ash of coal chemical industry carried out as solid waste at present Stack or landfill stabilization, it is not only costly, and cause the huge waste of resource.Make full use of clinker special in itself for this Some chemical composition or physicochemical characteristics, product of the production with higher economic value, turn waste into wealth, and improve coal resources Comprehensive utilization ratio, with huge meaning.
The comprehensive utilization of current coal gasification lime-ash also predominantly stays in building materials field, water treatment agent field application mostly To pass through soda acid and other inorganic material-modified, not only complex process, and easily produce secondary pollution.And because by its grain The small limitation of degree, with poor resistance, is easily washed away by current, and sedimentation produces the shortcomings of mud results in blockage, and has a strong impact at it Efficiency is managed, causes the problem of it has larger in engineering application.
The content of the invention
For problems of the prior art, the present invention provide a kind of water treatment absorbent based on coal gasification lime-ash and Its preparation method, is easy to implement, with low cost, realizes the comprehensive utilization to coal gasification lime-ash, makes full use of lime-ash peculiar in itself Chemical composition or physicochemical characteristics, product of the production with higher economic value reach the standard of engineer applied, change give up into Treasured, improves the comprehensive utilization ratio of coal resources.
The present invention is to be achieved through the following technical solutions:
A kind of water treatment absorbent preparation method based on coal gasification lime-ash, comprises the following steps,
Step 1, coal gasification lime-ash is mixed evenly with concentration for 0.1-0.5% polyacrylamide solution and mixed Compound;The mixed proportion of polyacrylamide solution and coal gasification lime-ash is pressed per 10ml polyacrylamide solution mixed gas ashing slags 100-10000 grams;
Step 2, addition concentration is 30%-60% ptfe emulsions in the mixture, continues to stir, mixes in right amount Water, makes the slurry of mixture pulp;The volume ratio of ptfe emulsion and polyacrylamide solution is 3:1 to 1:3;
Step 3, slurry is molded by extrusion shearing, then the water based on coal gasification lime-ash in stripping and slicing shape is obtained after drying Handle adsorbent.
It is preferred that, in step 3, slurry before the forming, static aquation 1-4 hours.
It is preferred that, in step 3, temperature during drying is 50-90 degrees Celsius.
It is preferred that, in step 2, the volume ratio of ptfe emulsion and polyacrylamide solution is 1:1.
It is preferred that, step 2, the concentration that ptfe emulsion is added in the mixture is 50%.
A kind of water treatment absorbent based on coal gasification lime-ash prepared by preparation method of the present invention.
Compared with prior art, the present invention has following beneficial technique effect:
The method of the invention polyacrylamide solution and ptfe emulsion and coal gasification lime-ash are according to a certain ratio Mixing, wherein polyacrylamide and polytetrafluoroethylene (PTFE) each serve as the effect of modified and adhesive, pass through extrusion forming, drying Water treatment absorbent is made;This method have raw material sources it is extensive, simple, it is efficient the characteristics of, while being the useless of coal gasification lime-ash An easily approach is found in thing comprehensive utilization, and by simple technical process, coal gasification lime-ash is processed into engineering The water treatment product of application value, reduces the expense that coal gasification lime-ash such as is stacked, filled at the disposal as solid waste, has Preferable application value.
Adsorbent of the present invention not only has very strong adsorption capacity, while also there is preferable mechanical strength, can To be directly used in water treatment field.
Brief description of the drawings
Fig. 1 is the adsorption effect figure of the water treatment absorbent to methylene blue described in present example.
Embodiment
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and It is not to limit.
Water treatment absorbent preparation method of the invention based on coal gasification lime-ash, being prepared using coal gasification lime-ash has strong suction The water treatment agent of attached performance.It is mixed evenly, adds a small amount of by using a small amount of polyacrylamide solution and coal gasification lime-ash Ptfe emulsion, is stirred into slurry.Then slurry is pressed into definite shape and size by forming machine, then dried That is finished product.
In the method for the invention, concentration of polyacrylamide solution is 0.1-0.5%, the mixed proportion with coal gasification lime-ash By every 100-10000 grams of 10ml polyacrylamide solutions mixed gas ashing slag, it is thoroughly mixed uniformly, then adds concentration For 30-60% ptfe emulsion 10mL, continue to stir, make mixture pulp.By paste mixture is static, aquation 1- 4h, imports forming machine, extruding, shear forming, then stripping and slicing after shaping is dried under 50-90 degrees Celsius must both have certain machinery The finished product of intensity and excellent absorption property.
Embodiment 1
Take 0.1% polyacrylamide solution 10mL and 1000g coal gasification lime-ash to mix, stir.Then it is further The polytetrafluoro emulsion 10mL of addition 60%, continues to stir, mixes suitable quantity of water, make mixture pulp.This paste mixture is quiet Only, hydration reaction 4h, imports mould, extruding, shaping, then forming module is placed into 2h drying in 80 degrees Celsius of baking oven, both Obtain the material for water treatment with certain mechanical strength and excellent absorption property.
Material 5g is used to adsorb the methylene blue in 1000mL simulated wastewaters, methylene blue solution initial concentration Remaining methylene blue concentration and adsorption time are as shown in Figure 1 in 250mg/L, solution.
Embodiment 2
Take 0.5% polyacrylamide solution 30mL and 600g coal gasification lime-ash to mix, stir.Then further add Enter 30% polytetrafluoro emulsion 10mL, continue stir, mix suitable quantity of water, make mixture pulp.By this paste mixture it is static, Hydration reaction 1h, imports mould, extruding, shaping, then forming module is placed into 3h drying in 50 degrees Celsius of baking oven, both obtains Material for water treatment with certain mechanical strength and excellent absorption property.
Embodiment 3
Take 0.3% polyacrylamide solution 10mL and 100g coal gasification lime-ash to mix, stir.Then further add Enter 50% polytetrafluoro emulsion 30mL, continue stir, mix suitable quantity of water, make mixture pulp.By this paste mixture it is static, Hydration reaction 2h, imports mould, extruding, shaping, then forming module is placed into 1h drying in 90 degrees Celsius of baking oven, both obtains Material for water treatment with certain mechanical strength and excellent absorption property.

Claims (6)

1. a kind of water treatment absorbent preparation method based on coal gasification lime-ash, it is characterised in that comprise the following steps,
Step 1, coal gasification lime-ash is mixed evenly with concentration for 0.1-0.5% polyacrylamide solution and mixed Thing;The mixed proportion of polyacrylamide solution and coal gasification lime-ash is pressed per 10ml polyacrylamide solution mixed gas ashing slags 100-10000 grams;
Step 2, it is 30%-60% ptfe emulsions concentration to be added in the mixture, continues to stir, mixes appropriate water, Make the slurry of mixture pulp;The volume ratio of ptfe emulsion and polyacrylamide solution is 3:1 to 1:3;
Step 3, slurry is molded by extrusion shearing, then the water process based on coal gasification lime-ash in stripping and slicing shape is obtained after drying Adsorbent.
2. a kind of water treatment absorbent preparation method based on coal gasification lime-ash according to claim 1, it is characterised in that In step 3, slurry before the forming, static aquation 1-4 hours.
3. a kind of water treatment absorbent preparation method based on coal gasification lime-ash according to claim 1, it is characterised in that In step 3, temperature during drying is 50-90 degrees Celsius.
4. a kind of water treatment absorbent preparation method based on coal gasification lime-ash according to claim 1, it is characterised in that In step 2, the volume ratio of ptfe emulsion and polyacrylamide solution is 1:1.
5. a kind of water treatment absorbent preparation method based on coal gasification lime-ash according to claim 1, it is characterised in that Step 2, the concentration that ptfe emulsion is added in the mixture is 50%.
6. the absorption of the water process based on coal gasification lime-ash prepared by a kind of preparation method as described in claim 1-5 any one Agent.
CN201710370451.8A 2017-05-23 2017-05-23 A kind of water treatment absorbent based on coal gasification lime-ash and preparation method thereof Pending CN107081140A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107519838A (en) * 2017-08-30 2017-12-29 长安大学 A kind of landfill leachate treatment material and garbage leachate treatment process
CN108033697A (en) * 2017-12-18 2018-05-15 中国科学院山西煤炭化学研究所 A kind of method that high calcium gasification lime-ash prepares low thermal conductivity thermal insulation material
CN108246256A (en) * 2018-01-23 2018-07-06 北京澳柯清洁煤气工程技术有限公司 A kind of processing method for the waste that fluidized gasification generates
CN109970398A (en) * 2018-12-26 2019-07-05 长安大学 Underground mine use high water filling material and preparation method thereof and device
CN110041940A (en) * 2019-04-12 2019-07-23 河南省核力科技发展有限公司 A kind of sandy soil conditioner and preparation method thereof
CN114345312A (en) * 2021-12-28 2022-04-15 吴志垚 Preparation method of carbon dioxide adsorbent
CN114405474A (en) * 2021-12-30 2022-04-29 中国科学院山西煤炭化学研究所 Preparation method of gasification slag-based solid amine carbon dioxide adsorbent
CN115722211A (en) * 2022-11-24 2023-03-03 国能神东煤炭集团有限责任公司 Phenol adsorbent and preparation method and application thereof

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CN105396574A (en) * 2015-11-25 2016-03-16 杨秋良 Method for recycling composite coal gasification catalyst
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107519838A (en) * 2017-08-30 2017-12-29 长安大学 A kind of landfill leachate treatment material and garbage leachate treatment process
CN108033697A (en) * 2017-12-18 2018-05-15 中国科学院山西煤炭化学研究所 A kind of method that high calcium gasification lime-ash prepares low thermal conductivity thermal insulation material
CN108033697B (en) * 2017-12-18 2020-12-25 中国科学院山西煤炭化学研究所 Method for preparing low-thermal conductivity thermal insulation material from high-calcium gasified ash
CN108246256A (en) * 2018-01-23 2018-07-06 北京澳柯清洁煤气工程技术有限公司 A kind of processing method for the waste that fluidized gasification generates
CN109970398A (en) * 2018-12-26 2019-07-05 长安大学 Underground mine use high water filling material and preparation method thereof and device
CN110041940A (en) * 2019-04-12 2019-07-23 河南省核力科技发展有限公司 A kind of sandy soil conditioner and preparation method thereof
CN110041940B (en) * 2019-04-12 2021-09-07 河南省核力科技发展有限公司 Sandy soil conditioner and preparation method thereof
CN114345312A (en) * 2021-12-28 2022-04-15 吴志垚 Preparation method of carbon dioxide adsorbent
CN114405474A (en) * 2021-12-30 2022-04-29 中国科学院山西煤炭化学研究所 Preparation method of gasification slag-based solid amine carbon dioxide adsorbent
CN115722211A (en) * 2022-11-24 2023-03-03 国能神东煤炭集团有限责任公司 Phenol adsorbent and preparation method and application thereof

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