CN108018024A - A kind of low-carbon environment-friendly deicing salt preparation method - Google Patents
A kind of low-carbon environment-friendly deicing salt preparation method Download PDFInfo
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Abstract
The present invention is a kind of low-carbon environment-friendly deicing salt preparation method, is related to fermentation and hydrogen production and deicing salt field.The deicing salt carried out using fruits and vegetables waste under medium temperature (35 DEG C~38 DEG C) or high temperature (53 DEG C~55 DEG C) hydrogen production through anaerobic fermentation metabolite (organic nitration mixture) and commodity calcium carbonate as raw material, under preference temperature carry out acid-base neutralization reaction and generate.Product price is cheap, easy to use, and non-toxic, non-corrosiveness is biodegradable, has no adverse effects to plant growth, is a kind of high-efficiency low-carbon environment-friendly snowmelt agent.In addition, the liquid component that solid-liquid separation unit operation produces is low-carbon environment-friendly deicing salt fluid product；Solid constituent is the material of the cellulose containing mineral fertilizers such as calcium phosphate, hemicellulose and lignin, as the raw material of charcoal production, for soil improvement.
Description
Technical field
The invention belongs to deicing salt field, is related to a kind of method using fermentative hydrogen production tail thing production deicing salt, especially
It is to be related to a kind of method using dark ferment for hydrogen production gas tail thing production low-carbon environment-friendly deicing salt.
Background technology
At present, the deicing salt that China uses mainly has two classes, non-deicing salt containing chlorine type and deicing salt containing chlorine type.It is non-to contain chlorine type
The main component of deicing salt is potassium acetate, and deicing salt containing chlorine type is divided into two kinds of villaumite type and mixed type, villaumite type deicing salt bag again
Include sodium chloride (salt), calcium chloride, magnesium chloride, potassium chloride etc..The mixture of mixed type deicing salt, that is, villaumite and non-villaumite, wherein
Some are added with corrosion inhibitor and corrosion inhibiter.
Snow disaster can cause traffic difficulties, go back entail dangers to personal safety, deal with improperly or may all influence city, state not in time
The economic development of family, so cause local traffic paralysis and large area accident.From snow melt efficiency, speed, convenient and efficient to cost
It is still to be difficult to what is substituted that the comparison of benefit, which can be seen that chloride salt deicing salt,.But external way is that very limits subtract
Use deicing salt less, manually to remove the snow, based on snow removal with machine, deicing salt snow removing supplemented by, and using while road and bridge etc. are set
Additional protection is applied, reduces loss as far as possible.
The 1980s mid-term, the U.S. begins to use urea and CMA (calcium magnesium acetate) to remove the snow, and CMA utilizes glacial acetic acid
React and generate with dolomite dust, have the advantages that fusing point is low, biodegradable, it is to the concrete in highway infrastructures and gold
The corrosivity of category is small, and substantially water source and soil will not be polluted.But since efficiency is low, dosage is big, costly, do not have
Largely used.
When solid-state deicing salt dispenses operation, wave caused by relatively sliding pop-up road surface due to road surface, be splashed into curb and drainage system
Take greatly, plus the influence of wind, waste ratio is up to 30%；, it is necessary to absorb heat and wet when dry deicing salt is spread on the ground
Gas, forms saline solution, reduces freezing point, plays the role of snow melt, and dry salt grain absorbs enough heat and moisture no
Before, do not have the effect of deicing or snow melting.
Patent application " a kind of environmental protection fast snow melting agent and preparation method thereof " (CN105542716A, application number
201610088134.2) by ethanol, sucrose, Soquad, ethylene glycol, glycerine, acesulfame potassium, sodium tripolyphosphate, Aspartame,
The materials such as calgon, methanol, threitol are mixed in a certain ratio, and boosting, release, be obtained by filtration a kind of liquid deicing salt,
The deicing salt ice ability is good, the influence done harm to road equipment without chlorine, but raw material needed for preparing is more, and reaction process needs to use liquid
Nitrogen boosting etc., technique is complex, more demanding to production equipment.
Patent application " method of the white deicing salt prepared by wood vinegar and application " (CN103788928A, application number
201410033297.1) colourless CMA liquid will be mixed in a certain ratio to obtain with calcium carbonate, basic magnesium carbonate after wood vinegar progress rectifying
Body deicing salt, obtains CMA white solid deicing salts after spray-dried, the deicing salt snow melt effect is good, does not have to road and bridge
Harm, but needs rectifying, high energy consumption and complicated.
Patent application " a kind of method for preparing environment-friendly snowmelt agent using byproduct crude glycerin and useless acetic acid "
Aqueous slkali is added in useless acetic acid by (CN104762063A, application number 201510136588.8) forms acetate, with crude glycerine
Mixing forms deicing salt through evaporation and concentration etc., and the deicing salt snow melt deicing is functional, and corrosivity is small, degradable, but handles
Extractant used is benzene, chloroform, ether etc. during crude glycerine, is detrimental to health.
Patent application " a kind of preparation method of bamboo vinegar base calcium of organic acid from snow-melting asphalt pavement admixture "
It is additional from snow-melting asphalt pavement that (CN105112018A, application number 201510630475.3) discloses a kind of bamboo vinegar base calcium of organic acid
The preparation method of agent, belongs to snow melt technical field.The present invention extracts bamboo vinegar using from bamboo pole, then with bamboo vinegar and calcium oxide
Reaction obtains bamboo vinegar base calcium of organic acid, coating liquid and bamboo vinegar base organic acid will be aoxidized made of laurate, linoleic acid and sodium carbonate
Calcium mixing, be granulated, and is used as snow melt from snow-melting asphalt pavement admixture, bamboo vinegar base calcium of organic acid up to a kind of bamboo vinegar base calcium of organic acid
Asphalt pavement admixture, on the premise of ensureing that ice-melt performance is suitable with traditional snow melt such as agent sodium chloride and calcium chloride, to drip
Blue or green and concrete erosion is small, and effect on environment is small.But this kind of deicing salt needs to carry out coating, mixing, granulation compared with multi-chemistry
Deng complicated technology, and using when easily cause sprinkling it is uneven, reduce snow melt effect.
The content of the invention
In order to solve existing deicing salt technology of preparing above shortcomings, the present invention provides a kind of low-carbon environment-friendly to melt
Avenge agent and preparation method.The environment-friendly snowmelt agent preparation method is the metabolism tail thing using fruits and vegetables waste hydrogen production through anaerobic fermentation ---
Organic nitration mixture and powder lime carbonate reaction generation low carbon organic acid calcium.Production process simple possible, it is of low cost, it is easy to accomplish work
Industry metaplasia is produced.
In order to complete present invention purpose, the application uses following technical scheme：
A kind of low-carbon environment-friendly deicing salt, it is characterised in that active ingredient is low carbon organic acid calcium, the low carbon organic acid
Calcium is reacted to obtain by the organic nitration mixture of low-carbon with powder lime carbonate.
Preferably, the organic nitration mixture of the low-carbon is the metabolism tail thing using fruits and vegetables waste hydrogen production through anaerobic fermentation gas.It is described low
In the organic nitration mixture of carbon, acetic acid and butyric acid are in the great majority (80~90%), additionally containing a small amount of propionic acid, formic acid and lactic acid (10~
20%).The fruits and vegetables waste of separate sources, the obtained organic nitration mixture of low-carbon slightly have difference into branch, but are all with acetic acid and butyric acid
Based on；In addition to acetic acid and butyric acid, also contain one or both of propionic acid, formic acid and lactic acid or three kinds.
The present invention also provides the preparation method of the low-carbon environment-friendly deicing salt, comprise the following steps：
(1) with collect come fruits and vegetables waste prepare organic nitration mixture co-producing hydrogen；
(2) organic nitration mixture and the calcium carbonate powder reaction obtained with step (1) prepares low carbon organic acid calcium, its reaction equation
For：
2HCOOH+CaCO3=Ca (HCOO)2+CO2↑+H2O
2CH3COOH+CaCO3=Ca (CH3COO)2+CO2↑+H2O
2CH3CH2CH2COOH+CaCO3=Ca (CH3CH2CH2COO)2+CO2↑+H2O
(3) filtering, centrifugation, removing water-insoluble, gained liquid after low carbon organic acid calcium solution made from step (2) is stood
Body is low-carbon environment-friendly deicing salt.
Preferably, the low-carbon environment-friendly deicing salt preparation method, it is characterised in that：The organic nitration mixture of step (1) low-carbon
Preparation comprises the following steps：
(a) sludge is poured into fermentation flask, 20~60min is heat-treated at 80~100 DEG C.It is subsequently cooled to fermentation and hydrogen production
35 DEG C~38 DEG C or 53 DEG C~55 DEG C of the preference temperature of acid is produced, is then 5~10g/L, medium temperature (35 DEG C~38 in concentration of glucose
DEG C) or high temperature (53 DEG C~55 DEG C) under the conditions of anaerobic acclimation be enriched with 24~48h (or reaction to stop aerogenesis), obtained sludge is i.e.
Inoculum as subsequent fermentation production acid.The sludge source is in the dirt of municipal sewage plant or industrial effluent treatment plant's (station)
Between mud dehydration, its moisture content is 80%~90%, and the content of organic matter is 40%~80% in sludge.
(b) weight in wet base is measured after the fruits and vegetables waste of collection is cleaned, mechanical mashing is carried out, obtains fruits and vegetables sauce, its solid content
For 5~10%, volatile component is 90~98%, pH between 5~7.
(c) the fruits and vegetables slurry that step (b) obtains is added in fermentation flask of the step (a) equipped with seed sludge, whole hair
Ferment device is closed, and it is in anaerobic state that it is internal；Water-bath temperature-controlling system, maintenance fermentation temperature for medium temperature (35 DEG C~38 DEG C) or
High temperature (53 DEG C~55 DEG C), 36~60h of anaerobic fermentation and acid production, the gas (gas phase) for generation of fermenting is mainly H2And CO2, pass through row
Lye (10~15%NaOH) collects H2.Fermentation and acid produces H2Metabolite be the fermentation tail thing containing organic nitration mixture.
(d) by the fermentation tail thing obtained in step (c) after centrifuge separation of solid and liquid, obtained liquid is organic mixed
Acid, in light yellow.The organic acid accounts for 80~90% using acetic acid and butyric acid as main component；Remaining component is propionic acid, formic acid and breast
Acid, accounts for 10~20%.
Preferably, the environment-friendly snowmelt agent preparation method, it is characterised in that:The low carbon organic acid calcium in step (2)
Preparation comprises the following steps：
(A) prepared by low carbon organic acid calcium crude product
The tap water of 95~105 parts by weight is added into reaction vessel, under conditions of being stirred continuously, adds 5 weight
The calcium carbonate powder of part, continues 10~15min of stirring, suspension is made；Then 35~55 weight are slowly added into suspension
The organic nitration mixture of low-carbon of part, after organic nitration mixture addition, continues 3~5h of stirring, suspension and organic nitration mixture is realized completely
Reaction, forms low carbon organic acid calcium crude product.
(B) low carbon organic acid calcium purifies
Low carbon organic acid calcium crude product in step (A) is subjected to separation of solid and liquid using centrifuge, obtained liquid component is low
Carbon calcium of organic acid liquid (deicing salt).
Deicing salt main component is soluble-salt, its snow melt principle is after deicing salt is dissolved in snow, its freezing point is in subzero
Form brine.The solidification point of brine is lower than the solidification point of water, therefore is difficult to form ice cube after having dissolved salt in avenging, easy to arrange snow.
In the metabolite of hydrogen production through anaerobic fermentation production acid except organic nitration mixture in addition to also very small amount sulfate radical and calcium phosphate ion, they and calcium
Ionic reaction generates the calcium sulfate and calcium phosphate precipitation of indissoluble, constitutes about 1%~5%, and liquid is readily soluble low carbon organic acid calcium,
For required liquid deicing salt product.Solid constituent (predominantly cellulose, lignin and calcium sulfate, the phosphoric acid that separation of solid and liquid produces
The calcium precipitation thing such as calcium, can be pyrolyzed production charcoal, available for improveing soil under low temperature (200~500 DEG C) and anoxia condition.
Preferably, the low-carbon environment-friendly deicing salt preparation method, the active ingredient of the deicing salt is low carbon organic acid calcium,
It is made of following steps：
A. poured into fermentation flask stand 30d after moisture content about 90% anaerobic sludge, 30min is heat-treated at 85 DEG C, so
Postcooling to fermentation and hydrogen production production acid preference temperature (53 DEG C~55 DEG C), concentration of glucose for 5~10g/L, medium temperature (35 DEG C~
38 DEG C) or high temperature (53 DEG C~55 DEG C) and anaerobic condition under 24~48h of rich domestication, or reaction is to stopping aerogenesis；Obtained anaerobism
Activated sludge is the inoculum as fruits and vegetables waste fermentation and acid production hydrogen.
B. by the fruits and vegetables waste of collection cleaning measurement weight in wet base, carry out mechanical mashing, obtain the pH of fruits and vegetables slurry for 5.5~
6.5。
C. the fruits and vegetables slurry obtained in the inoculum administration b obtained in a is mixed, inoculum concentration is 30% (V/V), in anaerobism
Medium temperature (35 DEG C~38 DEG C) or high temperature (53 DEG C~55 DEG C) fermentation and acid production hydrogen is carried out in reactor, until completing production hydrogen (acid) mistake
Journey, about 48h, the gas (gas phase) that acidifying fermentation produces is mainly H2And CO2, H is collected by arranging 15%NaOH solution2.Hair
Ferment production acid production H2Metabolite be the fermentation tail thing containing organic nitration mixture.
D. the liquid phase obtained in step c is metabolized tail thing after centrifugal solid-liquid separates, obtained liquid is organic for low-carbon
Nitration mixture, in light yellow.The low carbon organic acid accounts for 80~90% using acetic acid and butyric acid as main component；Remaining component is a small amount of
Other organic acids such as propionic acid, formic acid and lactic acid, account for 10~20%.
E. the tap water of 95~105 parts by weight is added into reaction vessel, under conditions of being stirred continuously, adds 5 weights
The calcium carbonate powder of part is measured, continues to stir 10min, suspension is made；Then toward being slowly added into 35~55 parts by weight in suspension
The organic nitration mixture of low-carbon, after organic nitration mixture adds, continue 3~5h of stirring, suspension and organic nitration mixture is reacted completely, formed it is low
Carbon calcium of organic acid crude product.
F. the low carbon organic acid calcium crude product obtained in step e is obtained into two kinds of liquid and solid after centrifuge separation of solid and liquid
Component, wherein, liquid component is light yellow low carbon organic acid calcium liquid (i.e. low-carbon environment-friendly liquid deicing salt), solid constituent conduct
Produce the raw material of charcoal.
The present invention compared with the existing technology, has the following advantages that：
(1) environment-friendly snowmelt agent is prepared using the metabolism tail thing of fruits and vegetables waste hydrogen production through anaerobic fermentation, realizes fruits and vegetables waste
Higher value application, solves the problems, such as the secondary pollution of fermentation and hydrogen production.
(2) solve etching problem of traditional deicing salt to road and bridge reinforcing bar, reduce deicing salt to road hazards and
The risk that environment influences.
(3) fluid product Snow-melting speed is fast, good fluidity, it is easy to accomplish machinery sprinkling and scale operation.
(4) low carbon organic acid calcium crude product separation of solid and liquid to solid contain cellulose, lignin and calcium phosphate, calcium sulfate
Material etc., obtains production charcoal, available for improveing soil through low temperature (200~500 DEG C).
Brief description of the drawings
Fig. 1 is the flow chart that the dark fermentation and hydrogen production excess of biomass waste produces deicing salt.
Embodiment
Following embodiments are the further explanations to the present invention, but the present invention is not limited thereto.
Embodiment 1
(1) prepared by seed sludge：Take 500ml sludge to pour into fermentation flask, heat in thermostat water bath at 85 DEG C
30min.Between the sludge dewatering of municipal sewage plant or industrial effluent treatment plant's (station), its moisture content is the sludge source
80%, the content of organic matter is 55% in sludge.Under the conditions of anaerobism and high temperature (55 DEG C), organic loading (concentration of glucose) is 5g/
L, acclimating 24h, or until stop aerogenesis.
(2) preparation of substrate：After the fruits and vegetables such as apple, banana, Chinese cabbage waste is cleaned, mashing processing is carried out, is fermented
The nutriment of acid, solid content 10.5% are produced, volatile component accounts for 94.3%, pH 6.0.
(3) prepared by the organic nitration mixture crude product of low-carbon：500ml fruits and vegetables slurries are added to 1000ml fermentation flasks, are then inoculated with
150ml sludge.Water-bath temperature-controlling system, it is 55 DEG C to maintain anaerobic fermentation temperature, and fermentation time is about 48h (or stopping angry body),
Biogas is collected using row's alkali (15%NaOH) method.The fermentation tail thing that the process obtains is the organic nitration mixture crude product of low-carbon.
(4) the organic nitration mixture purification of low-carbon：By the organic mixing acid crude of the low-carbon obtained in step (3) using centrifuge into
Row separation of solid and liquid, obtained liquid is the organic nitration mixture of low-carbon, as the organic acid source for preparing liquid deicing salt.Organic nitration mixture is in
Light yellow liquid, wherein acetic acid and butyric acid account for 93%, remaining accounts for 7% for a small amount of propionic acid, formic acid and lactic acid.
(5) preparation of low carbon organic acid calcium crude product：The tap water of 100 parts by weight is added into reaction vessel, is constantly being stirred
Under conditions of mixing, the calcium carbonate powder of 5 parts by weight is added, continues to stir 10min, suspension is made；Then toward in suspension
The organic nitration mixture of low-carbon of 50 parts by weight is slowly added into, after organic nitration mixture adds, continues to stir 3h, there is suspension and low-carbon
Machine nitration mixture reacts completely, forms low carbon organic acid calcium crude product.
(6) purification of low carbon organic acid calcium crude product：By the low carbon organic acid calcium crude product in step (5) using centrifuge into
Row separation of solid and liquid, obtained liquid component are light yellow calcium of organic acid solution (low-carbon environment-friendly liquid deicing salt), and solid constituent is
Containing the component such as a small amount of calcium sulfate, calcium phosphate precipitation and cellulose and lignin, 400 DEG C of anoxics carbonize to obtain improvement soil
Charcoal.
Embodiment 2
(1) prepared by seed sludge：Take 500ml sludge to pour into fermentation flask, heat in thermostat water bath at 90 DEG C
25min.Between the sludge dewatering of municipal sewage plant or industrial effluent treatment plant's (station), its moisture content is the sludge source
85%, the content of organic matter is 70% in sludge.Organic loading (glucose) is 10g/L, in 35 DEG C of anaerobism acclimating 40h, or
Until stopping aerogenesis, obtained anaerobic activated sludge is the inoculum of fruits and vegetables waste fermentation and hydrogen production.
(2) preparation of substrate：After the fruits and vegetables such as pineapple, orange, Chinese yam, potato waste is cleaned, mashing processing is carried out, is obtained
To the nutriment of fermentation and acid, solid content 9.5%, volatile component accounts for 95%, pH 6.0.
(3) prepared by the organic nitration mixture crude product of low-carbon：600ml fruits and vegetables slurry is added in 1000ml fermentation flasks, is added
240ml seed sludges are simultaneously settled to 1000ml with tap water.Installation for fermenting is closed anaerobic state, and water-bath temperature control, maintains hair
Ferment temperature is 35 DEG C, and the anaerobic fermentation time is 60h, and biogas is collected using row's alkali (12%NaOH) method.The hair that the process obtains
Ferment tail thing is low carbon organic acid crude product.
(4) the organic nitration mixture purification of low-carbon：By the organic mixing acid crude of the low-carbon obtained in step (3) using centrifuge into
Row separation of solid and liquid, obtained liquid is the organic nitration mixture of low-carbon, as the organic acid source for preparing liquid deicing salt, organic nitration mixture
In light yellow liquid, wherein acetic acid and butyric acid accounts for 96%, remaining is a small amount of propionic acid, formic acid and lactic acid, accounts for 4%.
(5) preparation of low carbon organic acid calcium crude product：The tap water of 105 parts by weight is added into reaction vessel, is constantly being stirred
Under conditions of mixing, the calcium carbonate powder of 5 parts by weight is added, continues to stir 15min, suspension is made；Then toward in suspension
The organic nitration mixture of low-carbon of 35 parts by weight is slowly added into, after organic nitration mixture adds, continues to stir 4h, there is calcium carbonate and low-carbon
Machine nitration mixture reacts completely, forms low carbon organic acid calcium crude product.
(6) purification of low carbon organic acid calcium crude product：By the low carbon organic acid calcium crude product in step (5) using centrifuge into
Row separation of solid and liquid, obtained liquid component are light yellow calcium of organic acid solution (low-carbon environment-friendly liquid deicing salt), and solid constituent is
Containing the component such as a small amount of calcium sulfate, calcium phosphate precipitation and cellulose and lignin, 300 DEG C of anoxics carbonize to obtain improvement soil
Charcoal.
The ice melting capability assay method of environment-friendly snowmelt agent according to the present invention carries out according to the following steps：
(a) 50ml tap water is respectively taken to pour into 10 identical beakers of shape size, numbering 1,2,3,4,5,6,7,
8,9,10, it is spare to be put into 10~12h of freezing in -19 DEG C of constant temperature refrigerator.
(b) tap water of 18~20 parts by weight is added into beaker, adds the sodium chloride powder system of 12~14 parts by weight
Into the sodium chloride solution that mass fraction is 65~75%.
(c) respectively take 3ml products and sodium chloride solution to add No. 1, in No. 3 beakers, respectively take 5ml products and sodium chloride solution in
No. 2, in No. 4 beakers, No. 5 beakers are as blank control.Ice-melt experiment is carried out at room temperature.
(d) operation of repeat step (c), carries out ice-melt experiment at 4 DEG C.
(e) ice melting capability of the volume, i.e. deicing salt of the ice cube melted is recorded per 20min.
The ice melting capability of environment-friendly snowmelt agent according to the present invention is 1.5~1.8 times of sodium chloride deicing salt.
Deicing salt ice-melt performance comparison at room temperature：
Ice-melt performance comparison at 4 DEG C of deicing salt：
Environment protection snow-dissolved agent is directly sprayed onto to the surface of snow during use.
Claims (8)
1. a kind of low-carbon environment-friendly deicing salt, it is characterised in that active ingredient is low carbon organic acid calcium, the low carbon organic acid calcium
Obtained by the organic nitration mixture of low-carbon with powder calcium carbonate reaction.
2. low-carbon environment-friendly deicing salt as claimed in claim 1, it is characterised in that the organic nitration mixture of low-carbon is to utilize fruits and vegetables
The metabolism tail thing of waste hydrogen production through anaerobic fermentation gas.
3. low-carbon environment-friendly deicing salt as claimed in claim 1 or 2, it is characterised in that in the organic nitration mixture of low-carbon, acetic acid
80~90% are accounted for butyric acid, propionic acid, formic acid and lactic acid account for 10~20%, weight ratio.
4. low-carbon environment-friendly deicing salt preparation method as claimed in claim 1, comprises the following steps：
(1) with collect come fruits and vegetables waste prepare organic nitration mixture co-producing hydrogen；
(2) organic nitration mixture and the calcium carbonate powder reaction obtained with step (1) prepares low carbon organic acid calcium,
(3) filtering, centrifugation, removing water-insoluble, gained liquid are after low carbon organic acid calcium solution made from step (2) is stood
For low-carbon environment-friendly deicing salt.
5. low-carbon environment-friendly deicing salt preparation method as claimed in claim 4, it is characterised in that：Step (1) low-carbon is organic mixed
Prepared by acid comprises the following steps：
(a) sludge is poured into fermentation flask, 20~60min is heat-treated at 80~100 DEG C；It is subsequently cooled to fermentation and hydrogen production production acid
35 DEG C~38 DEG C or 53 DEG C~55 DEG C of preference temperature, be 5~10g/L, medium temperature (35 DEG C~38 DEG C) or height in concentration of glucose
24~48h of rich domestication under warm (53 DEG C~55 DEG C) and anaerobic condition, or reaction extremely stop aerogenesis；Obtained anaerobic activated sludge is i.e.
Inoculum as fruits and vegetables waste fermentation and acid production hydrogen；
(b) will collection fruits and vegetables waste clean after measure weight in wet base, carry out mechanical mashing, obtain fruits and vegetables slurry, its solid content for 5~
10%, volatile component is 90~98%, pH between 5~7；
(c) the fruits and vegetables slurry that step (b) obtains is added in fermentation flask of the step (a) equipped with seed sludge, whole fermentation dress
It is closed to put, and it is in anaerobic state that it is internal；Water-bath temperature-controlling system, it is 35 DEG C~38 DEG C or 53 DEG C~55 to maintain fermentation temperature
DEG C, 36~60h of anaerobic fermentation and acid production；The gas that fermentation produces is mainly H2And CO2, H is collected by arranging lye2；Fermentation and acid produces
H2Metabolite be the fermentation tail thing containing organic nitration mixture；
(d) by the fermentation tail thing obtained in step (c) after centrifuge separation of solid and liquid, obtained liquid is organic nitration mixture, is in
It is light yellow；The organic acid accounts for 80~90% using acetic acid and butyric acid as main component；Remaining component is propionic acid, formic acid and lactic acid, is accounted for
10~20%.
6. low-carbon environment-friendly deicing salt preparation method as claimed in claim 5, it is characterised in that：Row's alkali described in step (c)
Liquid is 10~15%NaOH.
7. low-carbon environment-friendly deicing salt preparation method as described in claim 4 or 5, it is characterised in that：The low-carbon in step (2)
Prepared by calcium of organic acid comprises the following steps：
(A) prepared by low carbon organic acid calcium crude product
The tap water of 95~105 parts by weight is added into reaction vessel, under conditions of being stirred continuously, adds 5 parts by weight
Calcium carbonate powder, continues 10~15min of stirring, suspension is made；Then toward being slowly added into 35~55 parts by weight in suspension
The organic nitration mixture of low-carbon, after organic nitration mixture addition, continues 3~5h of stirring, suspension and organic nitration mixture is realized reaction completely,
Form low carbon organic acid calcium crude product；
(B) low carbon organic acid calcium purifies
Low carbon organic acid calcium crude product in step (A) is subjected to separation of solid and liquid using centrifuge, obtained liquid component has for low-carbon
Machine acid calcium liquid (deicing salt).
8. such as claim 4~7 any one of them low-carbon environment-friendly deicing salt preparation method, it is characterised in that：The deicing salt
Active ingredient be low carbon organic acid calcium, it is made of following steps：
A. poured into fermentation flask stand 30d after moisture content about 90% anaerobic sludge, 30min, Ran Houleng are heat-treated at 85 DEG C
But it is 5~10g/L, medium temperature (35 DEG C~38 in concentration of glucose to the preference temperature (53 DEG C~55 DEG C) of fermentation and hydrogen production production acid
DEG C) or high temperature (53 DEG C~55 DEG C) and anaerobic condition under domestication enrichment 24~48h, or reaction to stop aerogenesis；Obtained anaerobism
Activated sludge is the inoculum as fruits and vegetables waste fermentation and acid production hydrogen.
B. by the fruits and vegetables waste cleaning measurement weight in wet base of collection, mechanical mashing is carried out, the pH for obtaining fruits and vegetables slurry is 5.5~6.5.
C. the fruits and vegetables slurry obtained in the inoculum administration b obtained in a is mixed, inoculum concentration is 30% (V/V), in anaerobic reaction
Medium temperature (35 DEG C~38 DEG C) or high temperature (53 DEG C~55 DEG C) fermentation and acid production hydrogen is carried out in device, until sour (hydrogen) process of production is completed,
About 48h, the gas (gas phase) for generation of fermenting is mainly H2And CO2, H is collected by arranging 15%NaOH solution2；Fermentation and acid
Produce H2Metabolite be the fermentation tail thing containing organic nitration mixture；
D. the liquid phase obtained in step c is metabolized tail thing after centrifuge separation of solid and liquid, obtained liquid is organic mixed for low-carbon
Acid, in light yellow.The low carbon organic acid accounts for 80~90% using acetic acid and butyric acid as main component；Remaining component is on a small quantity its
His organic acid such as propionic acid, formic acid and lactic acid, accounts for 10~20%；
E. the tap water of 95~105 parts by weight is added into reaction vessel, under conditions of being stirred continuously, adds 5 parts by weight
Calcium carbonate powder, continue stir 10min, suspension is made；Then toward being slowly added into the low of 35~55 parts by weight in suspension
The organic nitration mixture of carbon, after organic nitration mixture adds, continues 3~5h of stirring, suspension and organic nitration mixture is reacted completely, and forming low-carbon has
Machine acid calcium crude product；
F. the low carbon organic acid calcium crude product obtained in step e is subjected to separation of solid and liquid in centrifuge；Wherein, liquid component is shallow
Yellow low carbon organic acid calcium liquid, i.e. low-carbon environment-friendly deicing salt；Solid constituent contains calcium phosphate, cellulose and lignin etc., can
Using the raw material as production charcoal, for soil improvement.
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| CN108949108A (en) * | 2018-06-26 | 2018-12-07 | 江苏新亿源环保科技有限公司 | A kind of preparation method of environment protection snow-dissolved agent |
| CN109054749A (en) * | 2018-08-31 | 2018-12-21 | 谭亚 | A kind of preparation method of environment protection snow-dissolved agent |
| CN111363521A (en) * | 2020-05-06 | 2020-07-03 | 延安市公路局 | Preparation method of environment-friendly snow-melting deicing fluid |
| CN111394061A (en) * | 2020-05-06 | 2020-07-10 | 西安赛特实业有限公司 | Preparation method of organic composite snow-melting liquid |
| CN114106776A (en) * | 2022-01-27 | 2022-03-01 | 潍坊海之源化工有限公司 | Preparation method of environment-friendly snow-melting agent |
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