CN104971704A - Adsorption material for vehicle tail gas treatment - Google Patents
Adsorption material for vehicle tail gas treatment Download PDFInfo
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- CN104971704A CN104971704A CN201510401883.1A CN201510401883A CN104971704A CN 104971704 A CN104971704 A CN 104971704A CN 201510401883 A CN201510401883 A CN 201510401883A CN 104971704 A CN104971704 A CN 104971704A
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Abstract
The present invention relates to an adsorption material for vehicle tail gas treatment, and belongs to the technical field of vehicle tail gas treatments. According to the present invention, based on the defect of the low catalysis effect of the existing catalyst for the vehicle tail gas treatment, an adsorption material for vehicle tail gas treatment is provided, and is prepared mainly from polytetrafluoroethylene, polyvinyl alcohol and sodium borohydride, and after using the adsorption material, under the light irradiation, the adsorption material surface layer is completely oxidized and decomposed, and the surface achieving the saturated adsorption state sheds in a layer-by-layer manner, and can be subjected to repeated adsorption utilization.
Description
Technical field
The present invention relates to a kind of sorbing material for vehicle maintenance service, belong to vehicle maintenance service technical field.
Background technology
Vehicle exhaust, as one of air-polluting main source, containing a large amount of harmful substances in motor-vehicle tail-gas, comprises carbon monoxide, nitrogen oxide, hydrocarbon and solid suspended particle etc.
The method of current process vehicle exhaust mainly contains: control technology, the use of administrative means and the catalyst for vehicle maintenance service.In the method for conventional process vehicle exhaust, the disequilibrium of the dispersiveness serious due to automobilism and mobility and regional development, the above two are more difficult in reality is implemented, and take effect low.At present, catalyst for vehicle maintenance service is a lot, also certain effect is achieved, but because automobile usually has engine misses in the process of moving, may leave unburned mixture to burn in catalyst converter and very exothermic reaction occurs, automobile continuous high speed large load operation, automobile is braked suddenly, slow down, these phenomenons make catalysis work in high temperature for a long time to cause inefficacy, cause blast pipe over-emitting black exhaust; Secondly the carbon monoxide that the manganese in the sulphur in fuel oil and lubricating oil, phosphorus, anti-knock agent, lead, fuel oil imperfect combustion produce all can cause catalyst poisoning to lose efficacy, emission is caused to exceed standard, therefore, catalyst catalytic efficiency in real use procedure is not high, does not reach the object of lasting catalyst operation.
Summary of the invention
Technical problem to be solved by this invention: for the existing drawback low for the catalyst effect of vehicle maintenance service, provide a kind of sorbing material for vehicle maintenance service, adopt the main vehicle maintenance service sorbing material made containing polytetrafluoroethylene (PTFE), polyvinyl alcohol and sodium borohydride, after using under the irradiation of light, sorbing material top layer is completely oxidized, decomposition, adsorbing saturated surface layer to come off, can utilize for repeating absorption.
For solving the problems of the technologies described above, the present invention adopts technical scheme as described below: a kind of sorbing material for vehicle maintenance service, is characterized in that: primary raw material is polytetrafluoroethylene (PTFE), polyvinyl alcohol and sodium borohydride.
For a sorbing material for vehicle maintenance service, it is characterized in that concrete preparation process is:
(1) first take the polytetrafluoroethylene (PTFE) of 25 ~ 45g, ethanol solution 350 ~ 720mL that to add containing mass fraction be 4 ~ 12% urea soaks;
(2) in said mixture, 4 ~ 9g nickel nitrate is added, 3 ~ 10g aluminum nitrate, 5 ~ 10g magnesium nitrate, stirred at ambient temperature 1.5 ~ 2.8h;
(3) pour in hydrothermal reaction kettle and be heated to 140 DEG C, reaction 5 ~ 10h, after room temperature to be cooled with after ethanol, washed with de-ionized water twice at 60 DEG C dry 5h, filter, filter residue dries under gravity-flow ventilation condition;
(4) in the above-mentioned filter residue after filtration, to dry, adding mass concentration ratio is 5 ~ 10% polyvinyl alcohol and 1 ~ 5% sodium borohydride, and be placed in banbury, temperature reaches 150 ~ 280 DEG C;
(5) sent in extruder by the material of banbury, melt extrusion is extrude strip in 140 ~ 160 DEG C of moulds in temperature;
(6) pass into nitrogen simultaneously, the sheet material with temperature is cooled to-2 DEG C rapidly, humidity is in 25% situation, constant 25 ~ 50min;
(7) take out the composite of strip, dry under natural ventilating status;
(8) composite of the strip after drying is sent in multiple roll stretching-machine, first preheating 120 ~ 160 DEG C in stretching-machine, stretch through 2 ~ 6 groups of draw rolls, obtain required a kind of sorbing material for vehicle maintenance service.
Application process of the present invention: before running car, sorbing material is positioned in vehicle-exhaust exhaust pipe, taken out again after automobile quits work half an hour, 25 ~ 60min is irradiated, recycling, until the circulation of whole sorbing material comes off totally under being placed on sunshine.
Principle of the present invention: by adding nickel nitrate, aluminum nitrate, magnesium nitrate carries out modification to polytetrafluoroethylmaterial material, modified sorbing material has the large characteristic of specific area, place it under the irradiation of sunshine completely oxidized after 30 ~ 60min, the top layer of sorbing material starts slowly to soften, make its top layer slowly dry, aging by adding sodium borohydride again, slight crack, peeling that continuous appearance is small, after to come off powdered material, its deep layer of effective prevention is continued oxidation, thus reaches the object recycled.
The present invention is compared with additive method, and Advantageous Effects is:
(1) this vehicle exhaust sorbing material use after under the irradiation of light, sorbing material top layer can be fully oxidized within a certain period of time, rear degradation and decomposition, return the earth; Do not produce gas and noxious material, can not pollute environment, water source.
(2), after the entry material of this vehicle exhaust sorbing material comes off, for recycling, can come off totally until whole sorbing material circulates.
Embodiment
For a sorbing material for vehicle maintenance service, it is characterized in that: primary raw material is polytetrafluoroethylene (PTFE), polyvinyl alcohol and sodium borohydride.
For a sorbing material for vehicle maintenance service, it is characterized in that concrete preparation process is:
(1) first take the polytetrafluoroethylene (PTFE) of 25 ~ 45g, ethanol solution 350 ~ 720mL that to add containing mass fraction be 4 ~ 12% urea soaks;
(2) in said mixture, 4 ~ 9g nickel nitrate is added, 3 ~ 10g aluminum nitrate, 5 ~ 10g magnesium nitrate, stirred at ambient temperature 1.5 ~ 2.8h;
(3) pour in hydrothermal reaction kettle and be heated to 140 DEG C, reaction 5 ~ 10h, after room temperature to be cooled with after ethanol, washed with de-ionized water twice at 60 DEG C dry 5h, filter, filter residue dries under gravity-flow ventilation condition;
(4) in the above-mentioned filter residue after filtration, to dry, adding mass concentration ratio is 5 ~ 10% polyvinyl alcohol and 1 ~ 5% sodium borohydride, and be placed in banbury, temperature reaches 150 ~ 280 DEG C;
(5) sent in extruder by the material of banbury, melt extrusion is extrude strip in 140 ~ 160 DEG C of moulds in temperature;
(6) pass into nitrogen simultaneously, the sheet material with temperature is cooled to-2 DEG C rapidly, humidity is in 25% situation, constant 25 ~ 50min;
(7) take out the composite of strip, dry under natural ventilating status;
(8) composite of the strip after drying is sent in multiple roll stretching-machine, first preheating 120 ~ 160 DEG C in stretching-machine, stretch through 2 ~ 6 groups of draw rolls, obtain required a kind of sorbing material for vehicle maintenance service.
Example 1
First take the polytetrafluoroethylene (PTFE) of 25g, the ethanol solution 350mL that to add containing mass fraction be 4% urea soaks; 5g nickel nitrate is added, 4g aluminum nitrate, 6g magnesium nitrate, stirred at ambient temperature 1.5h in said mixture; Then pour in hydrothermal reaction kettle and be heated to 140 DEG C, reaction 6h, after room temperature to be cooled with after ethanol, washed with de-ionized water twice at 60 DEG C dry 5h, filter, filter residue dries under gravity-flow ventilation condition; In said mixture, add mass concentration ratio is 6% polyvinyl alcohol and 5% sodium borohydride, and be placed in banbury, temperature reaches 180 DEG C; Sent in extruder by the material of banbury, melt extrusion is extrude strip in 160 DEG C of moulds in temperature again; Pass into nitrogen simultaneously, the sheet material with temperature is cooled to-2 DEG C rapidly, humidity is in 25% situation, constant 25min; Take out the polytetrafluoroethylene (PTFE) of strip, dry under natural ventilating status; The polytetrafluoroethylene (PTFE) of the strip after drying is sent in multiple roll stretching-machine, first preheating 140 DEG C in stretching-machine, stretch through 3 groups of draw rolls, obtain required a kind of sorbing material for vehicle maintenance service.
Example 2
First take the polytetrafluoroethylene (PTFE) of 30g, the ethanol solution 500mL that to add containing mass fraction be 10% urea soaks; 6g nickel nitrate is added, 7g aluminum nitrate, 8g magnesium nitrate, stirred at ambient temperature 2.0h in said mixture; Then pour in hydrothermal reaction kettle and be heated to 140 DEG C, reaction 8h, after room temperature to be cooled with after ethanol, washed with de-ionized water twice at 60 DEG C dry 5h, filter, filter residue dries under gravity-flow ventilation condition; In said mixture, add mass concentration ratio is 8% polyvinyl alcohol and 3% sodium borohydride, and be placed in banbury, temperature reaches 200 DEG C; Sent in extruder by the material of banbury, melt extrusion is extrude strip in 150 DEG C of moulds in temperature again; Pass into nitrogen simultaneously, the sheet material with temperature is cooled to-2 DEG C rapidly, humidity is in 25% situation, constant 30min; Take out the polytetrafluoroethylene (PTFE) of strip, dry under natural ventilating status; The polytetrafluoroethylene (PTFE) of the strip after drying is sent in multiple roll stretching-machine, first preheating 145 DEG C in stretching-machine, stretch through 4 groups of draw rolls, obtain required a kind of sorbing material for vehicle maintenance service.
Example 3
First take the polytetrafluoroethylene (PTFE) of 45g, the ethanol solution 650mL that to add containing mass fraction be 11% urea soaks; 6g nickel nitrate is added, 7g aluminum nitrate, 8g magnesium nitrate, stirred at ambient temperature 2.2h in said mixture; Then pour in hydrothermal reaction kettle and be heated to 140 DEG C, reaction 80h, after room temperature to be cooled with after ethanol, washed with de-ionized water twice at 60 DEG C dry 5h, filter, filter residue dries under gravity-flow ventilation condition; In said mixture, add mass concentration ratio is 6% polyvinyl alcohol and 2% sodium borohydride, and be placed in banbury, temperature reaches 280 DEG C; Sent in extruder by the material of banbury, melt extrusion is extrude strip in 160 DEG C of moulds in temperature again; Pass into nitrogen simultaneously, the sheet material with temperature is cooled to-2 DEG C rapidly, humidity is in 25% situation, constant 38min; Take out the polytetrafluoroethylene (PTFE) of strip, dry under natural ventilating status; The polytetrafluoroethylene (PTFE) of the strip after drying is sent in multiple roll stretching-machine, first preheating 160 DEG C in stretching-machine, stretch through 5 groups of draw rolls, obtain required a kind of sorbing material for vehicle maintenance service.
Claims (2)
1. for a sorbing material for vehicle maintenance service, it is characterized in that: described sorbing material primary raw material is polytetrafluoroethylene (PTFE), polyvinyl alcohol and sodium borohydride.
2., for a sorbing material for vehicle maintenance service, it is characterized in that concrete preparation process is:
(1) first take the polytetrafluoroethylene (PTFE) of 25 ~ 45g, ethanol solution 350 ~ 720mL that to add containing mass fraction be 4 ~ 12% urea soaks;
(2) in said mixture, 4 ~ 9g nickel nitrate is added, 3 ~ 10g aluminum nitrate, 5 ~ 10g magnesium nitrate, stirred at ambient temperature 1.5 ~ 2.8h;
(3) pour in hydrothermal reaction kettle and be heated to 140 DEG C, reaction 5 ~ 10h, after room temperature to be cooled with after ethanol, washed with de-ionized water twice at 60 DEG C dry 5h, filter, filter residue dries under gravity-flow ventilation condition;
(4) in the above-mentioned filter residue after filtration, to dry, adding mass concentration ratio is 5 ~ 10% polyvinyl alcohol and 1 ~ 5% sodium borohydride, and be placed in banbury, temperature reaches 150 ~ 280 DEG C;
(5) sent in extruder by the material of banbury, melt extrusion is extrude strip in 140 ~ 160 DEG C of moulds in temperature;
(6) pass into nitrogen simultaneously, the sheet material with temperature is cooled to-2 DEG C rapidly, humidity is in 25% situation, constant 25 ~ 50min;
(7) take out the composite of strip, dry under natural ventilating status;
(8) composite of the strip after drying is sent in multiple roll stretching-machine, first preheating 120 ~ 160 DEG C in stretching-machine, stretch through 2 ~ 6 groups of draw rolls, obtain required a kind of sorbing material for vehicle maintenance service.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510401883.1A CN104971704A (en) | 2015-07-09 | 2015-07-09 | Adsorption material for vehicle tail gas treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510401883.1A CN104971704A (en) | 2015-07-09 | 2015-07-09 | Adsorption material for vehicle tail gas treatment |
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| CN104971704A true CN104971704A (en) | 2015-10-14 |
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| CN201510401883.1A Pending CN104971704A (en) | 2015-07-09 | 2015-07-09 | Adsorption material for vehicle tail gas treatment |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5620669A (en) * | 1995-08-15 | 1997-04-15 | W. L. Gore & Associates, Inc. | Catalytic filter material and method of making same |
| CN1772340A (en) * | 2004-11-09 | 2006-05-17 | 戈尔企业控股股份有限公司 | Flue-gas processing technique based on adsorbent-polymer composite material |
| CN1978717A (en) * | 2006-11-30 | 2007-06-13 | 浙江理工大学 | Method for preparing expanded polytetrafluoroethylene fiber for exhaust decomposition |
| CN102773084A (en) * | 2012-07-18 | 2012-11-14 | 常州大学 | Preparation method of chemical adsorption material for removing phosphorus containing substances in wastewater |
| CN104437432A (en) * | 2014-11-20 | 2015-03-25 | 安徽天泰环保科技有限公司 | Activated carbon kieselguhr air purification particles dispersing uniformly and preparation method thereof |
| CN104549130A (en) * | 2014-12-04 | 2015-04-29 | 常州大学 | Preparation method of nickel-aluminum hydrotalcite doped with surfactant |
-
2015
- 2015-07-09 CN CN201510401883.1A patent/CN104971704A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5620669A (en) * | 1995-08-15 | 1997-04-15 | W. L. Gore & Associates, Inc. | Catalytic filter material and method of making same |
| CN1772340A (en) * | 2004-11-09 | 2006-05-17 | 戈尔企业控股股份有限公司 | Flue-gas processing technique based on adsorbent-polymer composite material |
| CN1978717A (en) * | 2006-11-30 | 2007-06-13 | 浙江理工大学 | Method for preparing expanded polytetrafluoroethylene fiber for exhaust decomposition |
| CN102773084A (en) * | 2012-07-18 | 2012-11-14 | 常州大学 | Preparation method of chemical adsorption material for removing phosphorus containing substances in wastewater |
| CN104437432A (en) * | 2014-11-20 | 2015-03-25 | 安徽天泰环保科技有限公司 | Activated carbon kieselguhr air purification particles dispersing uniformly and preparation method thereof |
| CN104549130A (en) * | 2014-12-04 | 2015-04-29 | 常州大学 | Preparation method of nickel-aluminum hydrotalcite doped with surfactant |
Non-Patent Citations (1)
| Title |
|---|
| 张骄佼: "镁铝水滑石低温吸附脱除硫化氢的研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
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