CN102690632B - Method for preparing environment-friendly snow melting agent by using pyroligneous liquid - Google Patents
Method for preparing environment-friendly snow melting agent by using pyroligneous liquid Download PDFInfo
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- CN102690632B CN102690632B CN201210198760.9A CN201210198760A CN102690632B CN 102690632 B CN102690632 B CN 102690632B CN 201210198760 A CN201210198760 A CN 201210198760A CN 102690632 B CN102690632 B CN 102690632B
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Abstract
The invention relates to a method for preparing an environment-friendly snow melting agent by using a pyroligneous liquid, belonging to the technical field of a snow melting agent. The method for preparing the environment-friendly snow melting agent by using the pyroligneous liquid is characterized in that the environment-friendly snow melting agent is prepared through the following steps: (1) reacting the pyroligneous liquid with white mud, namely, stirring and reacting the pyroligneous liquid with the papermaking byproduct for 2-2.5 hours at room temperature, wherein the weight ratio of the pyroligneous liquid to the white mud is 5:(1-3); (2) carrying out reactant filtration, namely, filtering the reactant obtained in the step (1) by using a filter, and separating a solid phase from a liquid phase so as to obtain filtrate containing calcium acetate; and (3) concentrating and evaporating the filtrate, namely concentrating and evaporating the filtrate which is filtered in the step (2) and contains calcium acetate so as to obtain the snow melting agent product. The method has the advantages that production process is simple and cost is low; the snow melting agent is environment-friendly and high in comprehensive utilization rate; and the problems of wood vinegar and white mud in a papermaking plant are solved once.
Description
Technical field
The invention belongs to Snow Agent technical field, particularly relate to a kind of method that wood vinegar is prepared environment protection snow-dissolved agent.
Background technology
At present, along with the continuous expansion of city size, Winter Snow sky impacts more and more outstanding to urban highway traffic and urban life,, the use of Snow Agent becomes one of effective means of removing road snow mantle.The most of Snow Agent using now, take villaumite as main, it is serious to the environmental disruption of road periphery, first, the use of Snow Agent can damage the plant of road periphery, and the corrosion of road pavement and bridge is also very serious, because salt solution infiltrates in ground, can cause saline Land, all there is pollution problem in current most of Snow Agent.In various Snow Agent, calcium acetate snow melt effect is best, be universally acknowledged a kind of environmental-protecting chemical product, compare with villaumite, there is fusing point low, biodegradable, very little to highway foundation facility and metal protection, soil and water resources are not polluted substantially, common existing calcium acetate Snow Agent is to be made by acetic acid and rhombspar, exist cost compared with high-technology problem, nowadays can only be used in airport, railway etc.
Summary of the invention
The present invention provides a kind of wood vinegar to prepare the method for environment protection snow-dissolved agent for solving the technical problem existing in known technology.
The object of this invention is to provide a kind of production technique simple, with low cost, Snow Agent environmental protection, comprehensive utilization ratio is high, and the wood vinegar that solves the feature such as wooden vinegar and paper mill white clay problem is prepared the method for environment protection snow-dissolved agent.
Wood vinegar of the present invention is mainly by water, methyl alcohol, formaldehyde, acetone, acetic acid, furfural, phenol etc., and alcohol, acid, ketone, aldehydes organism composition are the highest with acid compounds content in organism.
Operational path of the present invention: first wash paper mill white clay, make PH=7-8.Then further by the white clay dehydration after washing, make white clay water content lower than 12%.
The present invention prepares the technique of calcium acetate, there is no need wood vinegar to refine, and directly takes wood vinegar, adds the white clay (excessive) after washing, at room temperature, and stirring reaction 2 ~ 2.5 hours.Then by reactant, filter, get its filtrate, add activated carbon by the weight of filtrate 5%, mix, stir 30 minutes, standing rear filtration, obtain colourless or faint yellow filtrate.Finally, by concentrated filtrate, evaporation, obtain take calcium acetate as main low carbon mixture, both Snow Agent.
Wood vinegar of the present invention is prepared the technical scheme that the method for environment protection snow-dissolved agent takes:
Wood vinegar is prepared a method for environment protection snow-dissolved agent, it is characterized in that: environment protection snow-dissolved agent preparation process is,
(1) wood vinegar reacts with white clay
Wood vinegar and papermaking byproduct white clay, at room temperature, stirring reaction 2-2.5 hour; The weight proportion of wood vinegar and white clay is 5:1-3;
(2) reactant filters
The reactant that step (1) obtains, adopts strainer to filter, and carries out solid phase and liquid phase separation, obtains the filtrate containing calcium acetate;
(3) filtrate concentrates, evaporates
The filtrate containing calcium acetate after step (2) is filtered, concentrates, evaporates, and obtains Snow Agent product.
The method that wood vinegar of the present invention is prepared environment protection snow-dissolved agent can also adopt following technical scheme:
Described wood vinegar is prepared the method for environment protection snow-dissolved agent, it is characterized in that: after filtration containing the processing of decolour of the filtrate of calcium acetate, employing activated carbon adsorption is decoloured.
Described wood vinegar is prepared the method for environment protection snow-dissolved agent, it is characterized in that: when activated carbon adsorption decolouring, the add-on of activated carbon is the 3-10% containing the filtrate weight of calcium acetate.
Described wood vinegar is prepared the method for environment protection snow-dissolved agent, it is characterized in that: papermaking byproduct white clay, first wash, and the white clay pH value after washing is 7-8.
Described wood vinegar is prepared the method for environment protection snow-dissolved agent, it is characterized in that: papermaking byproduct white clay centrifuge dewatering, white clay water content is 5-12%.
Described wood vinegar is prepared the method for environment protection snow-dissolved agent, it is characterized in that: filtrate is concentrated, when evaporation, is dried with spray-drying tower, obtains environment protection snow-dissolved agent powder particle.
Advantage and positively effect that the present invention has are:
Wood vinegar is prepared the method for environment protection snow-dissolved agent owing to having adopted the brand-new technical scheme of the present invention, and compared with prior art, it is simple that the present invention has production technique, with low cost, Snow Agent environmental protection, comprehensive utilization ratio is high, once solves the advantage such as wooden vinegar and paper mill white clay problem.
Embodiment
For further understanding summary of the invention of the present invention, Characteristic, hereby exemplify following examples, and be described in detail as follows:
Embodiment 1
Wood vinegar is prepared a method for environment protection snow-dissolved agent, and its preparation process comprises following processing step:
1. wood vinegar reacts with white clay:
Wood vinegar and papermaking byproduct white clay, at room temperature, stirring reaction 2-2.5 hour; The weight proportion of wood vinegar and white clay is 5:1-3;
Papermaking byproduct white clay, first washs, and the white clay pH value after washing is 7-8; Then use centrifuge dewatering, white clay water content is 5-12%.
2. reactant filters:
The reactant that step (1) obtains, adopts strainer to filter, and carries out solid phase and liquid phase separation, obtains the filtrate containing calcium acetate;
3. decolouring is processed:
After filtration containing the processing of decolour of the filtrate of calcium acetate, employing activated carbon adsorption is decoloured; When activated carbon adsorption decolouring, the add-on of activated carbon is the 3-10% containing the filtrate weight of calcium acetate.
4. filtrate concentrates, evaporates:
By the filtrate containing calcium acetate after step (3) decolouring, concentrate, evaporate, obtain Snow Agent product.
Embodiment 2
Wood vinegar is prepared a method for environment protection snow-dissolved agent, and its preparation process comprises following processing step:
1. lime mud treatment:
First wash papermaking byproduct white clay, the white clay pH value after washing is 7, uses PH test paper; Then use centrifuge dewatering, white clay water content is 12%.
2. wood vinegar reacts with white clay:
Directly take 50 grams, wood vinegar, join in there-necked flask, then add 20 grams of the white claies (excessive) after washing, wood vinegar and papermaking byproduct white clay, at room temperature, stirring reaction 2 hours;
3. filter, decolour and process:
The reactant that step (2) obtains, filters, and gets its filtrate, adds activated carbon by the weight of filtrate 5%, mixes, stirs 30 minutes, standing rear filtration, obtains colourless or faint yellow filtrate.
4. filtrate concentrates, evaporates:
By the filtrate containing calcium acetate after step (3) decolouring, concentrate, evaporate, obtain take calcium acetate as main low carbon mixture, both Snow Agent products.
Embodiment 3
Wood vinegar is prepared a method for environment protection snow-dissolved agent, and its preparation process comprises following processing step:
1. lime mud treatment:
First wash papermaking byproduct white clay, the white clay pH value after washing is 7.5, uses special pH test paper; Then use plate-and-frame filter press dehydration, white clay water content is 10%.
2. wood vinegar reacts with white clay:
Take 100 kilograms, wood vinegar, join in reaction ax, then add 40 kilograms of white claies after step 2 washing, wood vinegar and papermaking byproduct white clay, at room temperature, stirring reaction 2 hours.
3. filter, decolour and process:
The reactant that step (2) obtains, filter, get its filtrate, add activated carbon by the weight of filtrate 5%, mix, stir 30 minutes, heat to 45 ℃ improve decolorizing effects, leave standstill after filter, obtain colourless or faint yellow filtrate.
4. filtrate concentrates, evaporates:
By the filtrate containing calcium acetate after step (3) decolouring, concentrate, evaporate, adopt spray-drying tower, obtain take calcium acetate as main low carbon mixture, both Snow Agent products.
Claims (1)
1. wood vinegar is prepared a method for environment protection snow-dissolved agent, it is characterized in that: environment protection snow-dissolved agent preparation process is,
(1) wood vinegar reacts with white clay
Wood vinegar and papermaking byproduct white clay, at room temperature, stirring reaction 2-2.5 hour; The weight proportion of wood vinegar and white clay is 5:1-3; Papermaking byproduct white clay, first washs, and the white clay pH value after washing is 7-8; Papermaking byproduct white clay centrifuge dewatering, white clay water content is 5-12%;
(2) reactant filters
The reactant that step (1) obtains, adopts strainer to filter, and carries out solid phase and liquid phase separation, obtains the filtrate containing calcium acetate; After filtration containing the processing of decolour of the filtrate of calcium acetate, employing activated carbon adsorption is decoloured; When activated carbon adsorption decolouring, the add-on of activated carbon is the 3-10% containing the filtrate weight of calcium acetate;
(3) filtrate concentrates, evaporates
After step (2) is filtered containing the filtrate of calcium acetate, concentrate, evaporate, be dried with spray-drying tower, obtain environment protection snow-dissolved agent powder particle product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210198760.9A CN102690632B (en) | 2012-06-15 | 2012-06-15 | Method for preparing environment-friendly snow melting agent by using pyroligneous liquid |
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| CN201210198760.9A CN102690632B (en) | 2012-06-15 | 2012-06-15 | Method for preparing environment-friendly snow melting agent by using pyroligneous liquid |
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| CN102690632A CN102690632A (en) | 2012-09-26 |
| CN102690632B true CN102690632B (en) | 2014-05-14 |
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| CN106065345B (en) * | 2016-02-26 | 2019-01-15 | 国电康能科技股份有限公司 | A kind of modified environment-friendly charcoal and its preparation method and application |
| CN106497517B (en) | 2016-08-28 | 2018-06-12 | 中盐金坛盐化有限责任公司 | A kind of method for preparing organic environmental-protection deicing salt using two alkaline process salt slurries |
| CN106634839A (en) * | 2016-11-22 | 2017-05-10 | 汪逸凡 | Preparation method of chloride-free, composite and environment-friendly snow-melting agent |
| CN106867454B (en) * | 2017-03-02 | 2018-10-12 | 辽宁科技学院 | A kind of technique preparing potassium acetate deicing salt using plant ash |
| CN109206536B (en) * | 2018-11-01 | 2022-04-29 | 南京工业大学 | Method for separating levoglucosan from pyroligneous liquor |
| CN109575881A (en) * | 2018-11-14 | 2019-04-05 | 锦西天然气化工有限责任公司 | A kind of preparation method of environment protection snow-dissolved agent |
| CN109943287A (en) * | 2018-12-15 | 2019-06-28 | 杭州银帆环境科技有限公司 | A kind of glass demisting frost fresh snow preparation manufacturing method of the vinegar liquid containing biomass pyrolytic |
| CN110939035A (en) * | 2019-10-22 | 2020-03-31 | 重庆市市政设计研究院 | Asphalt concrete snow melting and ice suppression pavement structure |
| CN111534280A (en) * | 2020-05-07 | 2020-08-14 | 甘肃环迪化工技术有限公司 | Preparation method of anti-freezing deicing agent for rural septic tank |
| CN112979452A (en) * | 2021-02-25 | 2021-06-18 | 上海第二工业大学 | Method for preparing environment-friendly calcium acetate snow-melting agent by using waste liquid crystal panel polarizing film pyrolysis gas/oil |
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Address after: 300143 Tianjin city Hebei District South Road No. 4 Patentee after: Tianjin Shang Chen Culture Communication Co., Ltd. Address before: 300143 Tianjin city Hebei District South Road No. 4 Patentee before: TIANJIN TIGER TECHNOLOGY DEVELOPMENT CO., LTD. |
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