CN109306287A - A method of biodiesel is prepared by raw material of sludge - Google Patents
A method of biodiesel is prepared by raw material of sludge Download PDFInfo
- Publication number
- CN109306287A CN109306287A CN201710630967.1A CN201710630967A CN109306287A CN 109306287 A CN109306287 A CN 109306287A CN 201710630967 A CN201710630967 A CN 201710630967A CN 109306287 A CN109306287 A CN 109306287A
- Authority
- CN
- China
- Prior art keywords
- sludge
- hexane
- acid catalyst
- mixed liquor
- drying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11C—FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM
- C11C3/00—Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom
- C11C3/04—Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom by esterification of fats or fatty oils
- C11C3/10—Ester interchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/02—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Abstract
The invention discloses a kind of methods for preparing biodiesel as raw material using sludge based on solid acid catalyst.This method includes the following steps: that sludge that (1) is obtained using sewage treatment plant as raw material, through filtering, precipitating, drying, obtains dewatered sludge；(2) using methanol as ester exchange agent, dewatered sludge is made to carry out dystopy ester exchange reaction under solid acid catalyst catalysis, the mixed liquor after obtaining dystopy transesterification；(3) mixed liquor is extracted using n-hexane as extractant, collects supernatant；(4) supernatant is cleaned with potassium bicarbonate solution, collects upper layer n-hexane phase；(5) it filters, evaporation and product are collected.Sludge drying process of the present invention has carried out energy saving optimizing, sludge pretreatment is carried out using heat drying, using dystopy ester-interchange method, after crude fat in sludge is extracted, with solid acid catalyst catalyzed transesterification, solid catalyst can both recycle reuse after the reaction was completed, while the reaction in turn avoids the acid waste liquid generated with sulphuric acid catalysis ester exchange reaction and needs the problem of could discharging after neutralizing.
Description
Technical field
The invention belongs to development of clean energy and waste resource recovery fields, and in particular to a kind of to prepare by raw material of sludge
The method of biodiesel.
Background technique
The catalyst of biomass preparation biodiesel usually has two major classes: homogeneous and heterogeneous catalysis.It is homogeneous and non-equal
Phase catalyst is respectively divided into acidic catalyst, basic catalyst and other types catalyst again.And current preparing biodiesel from sludge
It is most widely homogeneous acid catalyst that laboratory applications are relatively successful, such as concentrated sulfuric acid, also useful organisms enzyme.Use homogeneous acid catalysis
Agent can carry out dystopy and ester exchange reaction in situ to sludge, in laboratory research the lipid conversion ratio of sludge up to 99%,
The purity of the fatty acid methyl ester of acquisition is up to 96% or more.But using acid catalyst, the usage amount of concentrated sulfuric acid itself just compared with
Greatly, and it is difficult recycling reuse, needs to be neutralized using alkaline reagent later, reagent consumption amount is big；Use acid catalysis
Agent carries out ester exchange reaction, and the reaction time is longer；The separation of final product and residue and other by-products is not easy, the color of product
Pool is deeper, needs to carry out more purification steps；Using this strong acid of the concentrated sulfuric acid and corrosive agent, need to throw in industrialized production
Enter many safety costs.
Therefore, a kind of novel method that biodiesel is prepared as raw material using sludge that can overcome drawbacks described above is developed
It has important practical significance.
Summary of the invention
The object of the present invention is to provide a kind of methods for preparing biodiesel as raw material using sludge based on solid acid catalyst.
The method provided by the present invention that biodiesel is prepared as raw material using sludge based on solid acid catalyst, including it is following
Step:
(1) sludge pretreatment: the sludge obtained using sewage treatment plant is raw material, through filtering, precipitating, drying, obtains dry dirt
Mud；
(2) dystopy transesterification: the thick rouge using dehydrated alcohol and n-hexane as extractant, in dewatered sludge described in Soxhlet extraction
Fat；Using methanol as ester exchange agent, so that the crude fat is carried out ester exchange reaction under solid acid catalyst catalytic action, obtain ester
Mixed liquor after exchange；
(3) it extracts: the mixed liquor being extracted using n-hexane as extractant, collect supernatant, subnatant is discarded；
(4) it cleans: the supernatant being cleaned with potassium bicarbonate solution, collect upper layer n-hexane phase；
(5) it filters, evaporation and product are collected: the n-hexane being made mutually by the filter device containing deicer, to collect filtrate；
To the filtrate evaporation process, to remove remaining organic solvent, the residue after collecting evaporation is to get biodiesel product；
Wherein, solid acid catalyst described in step (2) is prepared by the method comprising the following steps:
(a) by soluble pink salt and aluminum soluble salt according to nAl:nSn=1:5-1:15 (preferably nAl:nSn=1:5-1:10)
Ratio be dissolved in deionized water, and the pH value of solution is adjusted to 8-9, is stirred continuously during adjusting PH, make liquid by
Gradually it is changed into suspended state；Then filter and be suspended in sediment the CH of 3-4wt%3COONH4In solution and it is stirred；Then
It filters again and sediment is dried, obtain aluminium tin mixture；Wherein, the soluble pink salt is concretely
SnCl4.5H2O, aluminum soluble salt concretely Al2(SO4)3；
(b) the aluminium tin mixture is immersed in the sulfuric acid solution that mass concentration is 75-85wt% and forms jello, to institute
It states jello to be stirred, solid is collected by filtration and is dried, finally to dry product in 400-500 DEG C of roasting 2.5-
4h is sealed spare after cooling.
In above method step (1), the sludge can be primary sludge and/or secondary heavy sludge.
The drying carries out in an oven, the condition of the drying are as follows: dries 12-14h at 100-120 DEG C.
The sludge pretreatment step further includes the steps that the dewatered sludge that will be obtained shakes processing, the shake on vibromill
The time of dynamic processing is 2-5min.
In above method step (2), the dosage of the dehydrated alcohol is 15-25ml/g dewatered sludge, the use of the n-hexane
Amount is 15-25ml/g dewatered sludge；The crude fat amount that every 10g dewatered sludge extracts is 1.25-1.6g；The dosage of the methanol is
60-80ml/g crude fat；The dosage of the solid acid catalyst be 1-1.5g/g crude fat, the dystopy ester exchange reaction it is anti-
Answering condition is 120-140 DEG C of temperature, time 3.5-4.5h.
In order to reach better ester exchange reaction effect, be additionally added n-hexane in the ester exchange reaction, it is described just oneself
The additional amount of alkane is 30-40ml/g crude fat.
In above method step (3), the dosage of the n-hexane is 0.35-0.45ml/ml mixed liquor；
Above method step (2) further includes afterwards the step for being cooled to room temperature the mixed liquor after dystopy transesterification before step (3)
Suddenly.
In above-mentioned extraction process, also sodium chloride saturated solution can be added into the mixed liquor after the dystopy transesterification, with
Inhibit the generation of emulsification.The additional amount of the sodium chloride saturated solution is 0.05-0.1ml/ml mixed liquor.
After the extraction, further include the steps that centrifugation；The condition of the centrifugation are as follows: 2600-3200rpm is centrifuged 4-
6min。
In above method step (4), the mass concentration of the potassium bicarbonate solution is 2-3wt%.The cleaning is in liquid separation
It is carried out in funnel.The cleaning can carry out 3-5 times.
In above method step (5), the deicer is anhydrous sodium sulfate.The evaporation process is in vacuum rotary evaporator
Middle progress, the temperature of the evaporation process are 40-55 DEG C.
In the step of preparing the solid acid catalyst (a), the drying carries out in an oven, the temperature of the drying
It is 100-110 DEG C, drying time 24-26h.
Solid heterogeneous catalyst it is usually used have base catalyst, the catalyst of resin type, solid acid catalyst etc..
Seminar where inventor has attempted three of the above type catalyst.The basic catalyst of trial includes pure KOH, is supported on
The KOH of KOH and load on the activated carbon on CaO.It was found that because of lipid component complexity, fatty acid in municipal sludge
Content is not low, acidity is higher, ineffective using these base catalysts, shows that yield is not high, purity is very low.The resin of trial
Type catalyst has cation exchange resin (Diaion PK208LH) and anion exchange resin (Diaion PA306S), this two
Kind resin can be successfully applied to waste oil biodiesel.But both exchanger resins are applied and are connected respectively application
In the preparing biodiesel from lipid that sludge extracts, effect is all bad, and either yield or purity is all lower.The solid acid of trial
Catalyst has sulfuric acid zirconium dioxide (H2SO4/ZrO2) catalyst, tin iron catalyst, tin Al catalysts.In these three catalyst with
Tin Al catalysts effect is best, prepared by KamchaiNuithitikul tin Al catalysts catalysis palm oil, and yield reaches
75.7% or so, 99% or more purity.Although this yield is low compared to the concentrated sulfuric acid, the biodiesel purity is high generated, face
Color is lighter, and industrialized production easy to accomplish.Therefore, the present invention selects tin Al catalysts as study subject, urges these
The catalytic mechanism of agent is furtherd investigate, and its structure and surface nature is transformed to improve its performance, improve biodiesel
Yield.
Compared with prior art, the beneficial effects of the present invention are: passing through using sludge from wastewater treatment plant as raw material different
Position transesterification preparing biological diesel oil, sludge pretreatment have carried out energy saving optimizing using heat drying, to sludge drying process, have adopted
With dystopy ester-interchange method, i.e., after the crude fat in dewatered sludge being extracted, with solid acid catalyst catalyzed transesterification, react
Solid catalyst can reuse after the completion, while the reaction in turn avoids generating in sulphuric acid catalysis ester-exchange reaction
Waste liquid need to neutralize after the problem of could discharging, lipid extraction process is omitted, reduces sludge preparing biological diesel oil cost
Expense improves reaction efficiency.Its used solid acid catalyst has reusable, regenerating easily and high conversion rate
The characteristics of.
Specific embodiment
The present invention will be described below by way of specific embodiments, but the present invention is not limited thereto, all of the invention
Any modifications, equivalent replacements, and improvements etc. done within spirit and principle, should all be included in the protection scope of the present invention.
Experimental method used in following embodiments is conventional method unless otherwise specified.
The materials, reagents and the like used in the following examples is commercially available unless otherwise specified.
Solid acid catalyst employed in following embodiments is prepared by the method comprising the following steps:
(a) by SnCl4.5H2O and Al2(SO4)3According to nAl:nSnThe ratio of=1:5-1:15 is dissolved in deionized water, and will
The pH value of solution is adjusted to 8, is stirred continuously during adjusting PH, liquid is made to be gradually converted into suspended state；Then it filters and incites somebody to action
Sediment is suspended in the CH of 4wt%3COONH4In solution and it is stirred；Then it filters again and sediment is dried, obtain
To aluminium tin mixture；
(b) the aluminium tin mixture is immersed in the sulfuric acid solution that mass concentration is 79wt%-85wt% and forms jello,
The jello is stirred, solid is collected by filtration and is dried, it is cold finally to dry product in 450 DEG C of roasting 3h
But it is sealed afterwards spare.
Embodiment 1
1. sludge pretreatment
With the sludge that sewage treatment plant obtains, by preliminary filtering, after precipitating, the sludge being concentrated is dense by gained
The sludge of contracting toasts 12h in 105 DEG C of baking ovens, and 2min is shaken on vibromill, obtains dewatered sludge.
2. dystopy transesterification
Dewatered sludge 10g obtained by taking, addition 200ml ethyl alcohol and 200ml n-hexane Soxhlet extraction crude fat, crude fat 1.41g,
100ml methanol and 50ml n-hexane, 1.6g n is addedAl:nSn=1:5, the solid acid catalyst that h 2 so 4 concentration is 79%,
It is reacted 4 hours in 130 DEG C of temperature, minisize reaction kettle, the mixed liquor 120-150ml after obtaining dystopy transesterification.
3. extraction
Mixed liquor after gained transesterification is cooled to room temperature, 50ml hexane solution is added, 10ml saturated sodium-chloride is molten
Liquid is sufficiently mixed 3~5min, and 5min is centrifuged under the conditions of 3000rpm, extracts supernatant, and subnatant is discarded.
4. cleaning
Gained supernatant is cleaned 3 times by separatory funnel with the potassium bicarbonate solution of 20ml mass concentration 2%, is collected
The n-hexane phase on upper layer.
5. filtering, evaporation and product are collected
Gained n-hexane phase is collected into filtrate by being covered with the filter device of anhydrous sodium sulfate.The filtrate of collection passes through 40
At a temperature of DEG C, evaporated in vacuum rotary evaporator, to remove the n-hexane and methanol solution of remaining, the remnants after collecting evaporation
Object is to get biodiesel product.
Under this condition, biodiesel production rate is 12.1% (in terms of dewatered sludge).It is surveyed by gas chromatography-mass spectrometry
Determine biodiesel purity, purity 100%.
Embodiment 2
1. sludge pretreatment
With the sludge that sewage treatment plant obtains, by preliminary filtering, after precipitating, the sludge being concentrated is dense by gained
The sludge of contracting toasts 12h in 105 DEG C of baking ovens, and 2min is shaken on vibromill, obtains dewatered sludge.
2. dystopy transesterification
Dewatered sludge 10g obtained by taking, addition 200ml ethyl alcohol and 200ml n-hexane Soxhlet extraction crude fat, crude fat 1.54g,
100ml methanol and 50ml n-hexane, 1.6g n is addedAl:nSn=1:10, the solid acid catalyst that h 2 so 4 concentration is 79%,
It is reacted 4 hours in 130 DEG C of temperature, minisize reaction kettle, the mixed liquor 120-150ml after obtaining dystopy transesterification.
3. extraction
Mixed liquor after gained transesterification is cooled to room temperature, 50ml hexane solution is added, 10ml saturated sodium-chloride fills
Divide mixing 3~5min, 5min is centrifuged under the conditions of 3000rpm, extract supernatant, subnatant is discarded.
4. cleaning
Gained supernatant is cleaned 3-5 times by separatory funnel with the potassium bicarbonate solution of 20ml mass concentration 2%, is received
Collect the n-hexane phase on upper layer.
5. filtering, evaporation and product are collected
Gained n-hexane phase is collected into filtrate by being covered with the filter device of anhydrous sodium sulfate.The filtrate of collection passes through 40
At a temperature of DEG C, evaporated in vacuum rotary evaporator, to remove the n-hexane and methanol solution of remaining, the remnants after collecting evaporation
Object is to get biodiesel product.
Under this condition, biodiesel production rate is 9.5% (in terms of dewatered sludge).Purity is 100%.
Embodiment 3
1. sludge pretreatment
With the sludge that sewage treatment plant obtains, by preliminary filtering, after precipitating, the sludge being concentrated is dense by gained
The sludge of contracting toasts 12h in 105 DEG C of baking ovens, and 2min is shaken on vibromill, obtains dewatered sludge.
2. dystopy transesterification
Dewatered sludge 10g obtained by taking, addition 200ml ethyl alcohol and 200ml n-hexane Soxhlet extraction crude fat, crude fat 1.29g,
100ml methanol and 50ml n-hexane, 1.6g n is addedAl:nSn=1:15, the solid acid catalyst that h 2 so 4 concentration is 79%,
It is reacted 4 hours in 130 DEG C of temperature, minisize reaction kettle, the mixed liquor 120-150ml after obtaining dystopy transesterification.
3. extraction
Mixed liquor after gained transesterification is cooled to room temperature, is added the hexane solution of 50ml, 10ml saturated sodium-chloride,
It is sufficiently mixed 3~5min, 5min is centrifuged under the conditions of 3000rpm, extracts supernatant, subnatant is discarded.
4. cleaning
Gained supernatant is cleaned 3-5 times, in collection by separatory funnel with the potassium bicarbonate solution of 20ml concentration 2%
The n-hexane phase of layer.
5. filtering, evaporation and product are collected
Gained n-hexane phase is collected into filtrate by being covered with the filter device of anhydrous sodium sulfate.The filtrate of collection passes through 40
At a temperature of DEG C, evaporated in vacuum rotary evaporator, to remove the n-hexane and methanol solution of remaining, the remnants after collecting evaporation
Object is to get biodiesel product.
Under this condition, biodiesel production rate is 12.5% (in terms of dewatered sludge).Purity is 100%.
Embodiment 4
1. sludge pretreatment
With the sludge that sewage treatment plant obtains, by preliminary filtering, after precipitating, the sludge being concentrated is dense by gained
The sludge of contracting toasts 12h in 105 DEG C of baking ovens, and 2min is shaken on vibromill, obtains dewatered sludge.
2. dystopy transesterification
Dewatered sludge 10g obtained by taking, addition 200ml ethyl alcohol and 200ml n-hexane Soxhlet extraction crude fat, crude fat 1.35g,
100ml methanol and 50ml n-hexane, 1.6g n is addedAl:nSn=1:10, the solid acid catalyst that h 2 so 4 concentration is 85%,
It is reacted 4 hours in 130 DEG C of temperature, minisize reaction kettle, the mixed liquor 120-150ml after obtaining dystopy transesterification.
3. extraction
Mixed liquor after gained transesterification is cooled to room temperature, is added the hexane solution of 50ml, 10ml saturated sodium-chloride,
It is sufficiently mixed 3~5min, 5min is centrifuged under the conditions of 3000rpm, extracts supernatant, subnatant is discarded.
4. cleaning
Gained supernatant is cleaned 3-5 times, in collection by separatory funnel with the potassium bicarbonate solution of 20ml concentration 2%
The n-hexane phase of layer.
5. filtering, evaporation and product are collected
Gained n-hexane phase is collected into filtrate by being covered with the filter device of anhydrous sodium sulfate.The filtrate of collection passes through 40
At a temperature of DEG C, evaporated in vacuum rotary evaporator, to remove the n-hexane and methanol solution of remaining, the remnants after collecting evaporation
Object is to get biodiesel product.
Under this condition, biodiesel production rate is 12.0% (in terms of dewatered sludge).Purity is 96.54%.
Claims (10)
1. a kind of method for preparing biodiesel as raw material using sludge based on solid acid catalyst, includes the following steps:
(1) sludge pretreatment: the sludge obtained using sewage treatment plant, through filtering, precipitating, drying, obtains dewatered sludge as raw material；
(2) dystopy transesterification: the crude fat using dehydrated alcohol and n-hexane as extractant, in dewatered sludge described in Soxhlet extraction；With
Methanol is ester exchange agent, so that the crude fat is carried out ester exchange reaction under solid acid catalyst catalytic action, obtains transesterification
Mixed liquor afterwards；
(3) it extracts: the mixed liquor being extracted using n-hexane as extractant, collect supernatant；
(4) it cleans: the supernatant being cleaned with potassium bicarbonate solution, collect upper layer n-hexane phase；
(5) it filters, evaporation and product are collected: the n-hexane being made mutually by the filter device containing deicer, to collect filtrate；To institute
Filtrate evaporation process is stated, to remove remaining organic solvent, the residue after collecting evaporation is to get biodiesel；
Wherein, solid acid catalyst described in step (2) is prepared by the method comprising the following steps:
(a) by soluble pink salt and aluminum soluble salt according to nAl:nSnThe ratio of=1:5-1:15 is dissolved in deionized water, and will be molten
The pH value of liquid is adjusted to 8-9, is stirred continuously during adjusting PH, liquid is made to be gradually converted into suspended state；Then it filters and incites somebody to action
Sediment is suspended in the CH of 3-4wt%3COONH4In solution and it is stirred；Then it filters again and sediment is dried,
Obtain aluminium tin mixture；
(b) the aluminium tin mixture is immersed in the sulfuric acid solution that mass concentration is 75-85wt% and forms jello, to described solidifying
Glue object is stirred, and solid is collected by filtration and is dried, cold finally to dry product in 400-500 DEG C of roasting 2.5-4h
But it is sealed afterwards spare.
2. according to the method described in claim 1, it is characterized by: in the step (1), the sludge be primary sludge and/
Or secondary heavy sludge；
In the step (1), the drying carries out in an oven, the condition of the drying are as follows: dries at 100-120 DEG C
12-14h；The step (1) further includes the steps that the dewatered sludge that will be obtained shakes processing on vibromill, the vibration processing
Time is 2-5min.
3. method according to claim 1 or 2, it is characterised in that: in the step (2), the dosage of the dehydrated alcohol
For 15-25ml/g dewatered sludge, the dosage of the n-hexane is 15-25ml/g dewatered sludge；The dosage of the methanol is 60-80ml/g
Crude fat；The dosage of the solid acid catalyst is 1-1.5ml/g crude fat, the reaction condition of the crude fat ester exchange reaction
It is 120-140 DEG C of temperature, time 3.5-4.5h；
N-hexane is additionally added in the ester exchange reaction, the additional amount of the n-hexane is 30-40ml/g crude fat.
4. method according to any one of claim 1-3, it is characterised in that: in the step (3), the n-hexane
Dosage is 0.35-0.45ml/ml mixed liquor.
5. method according to any of claims 1-4, it is characterised in that: in the step (3), the process of extraction
In, sodium chloride saturated solution also is added into the mixed liquor；The additional amount of the sodium chloride saturated solution is 0.05-0.1ml/
Ml mixed liquor.
6. method according to any one of claims 1-5, it is characterised in that: in the step (3), the extraction terminates
Afterwards, further include the steps that centrifugation；The condition of the centrifugation are as follows: 2600-3200rpm is centrifuged 4-6min.
7. method according to claim 1 to 6, it is characterised in that: in the step (4), the saleratus
The mass concentration of solution is 2-3%；The cleaning carries out in separatory funnel；The cleaning carries out 3-5 times.
8. method according to any one of claims 1-7, it is characterised in that: in the step (5), the deicer is
Anhydrous sodium sulfate；The evaporation process carries out in vacuum rotary evaporator, and the temperature of the evaporation process is 40-55 DEG C.
9. method according to claim 1 to 8, it is characterised in that: in the step for preparing the solid acid catalyst
Suddenly in (a), the solubility pink salt is SnCl4.5H2O, aluminum soluble salt Al2(SO4)3；
The drying carries out in an oven, and the temperature of the drying is 100-110 DEG C, drying time 24-26h.
10. the biodiesel that any one of claim 1-9 the method is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710630967.1A CN109306287A (en) | 2017-07-28 | 2017-07-28 | A method of biodiesel is prepared by raw material of sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710630967.1A CN109306287A (en) | 2017-07-28 | 2017-07-28 | A method of biodiesel is prepared by raw material of sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109306287A true CN109306287A (en) | 2019-02-05 |
Family
ID=65207657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710630967.1A Pending CN109306287A (en) | 2017-07-28 | 2017-07-28 | A method of biodiesel is prepared by raw material of sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109306287A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112174475A (en) * | 2019-07-02 | 2021-01-05 | 中国人民大学 | Low-temperature drying synergistic lipid extraction treatment method for sludge |
| CN114192186A (en) * | 2020-09-02 | 2022-03-18 | 中国人民大学 | Carbon-based catalyst material and preparation method and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101018867A (en) * | 2003-10-02 | 2007-08-15 | 密西西比州立大学 | Production of biodiesel and other valuable chemicals from wastewater treatment plant sludges |
| US20100175312A1 (en) * | 2009-01-13 | 2010-07-15 | Allan Donald Roden | Method for producing biodiesel material |
| CN102925294A (en) * | 2012-11-26 | 2013-02-13 | 西安建筑科技大学 | Mehtod for preparing biodiesel by floating slag from in-situ esterification sewage treatment plant |
| CN104004552A (en) * | 2014-05-29 | 2014-08-27 | 中国人民大学 | Method for preparing biodiesel from municipal sludge based on in-situ ester exchange |
| CN104450208A (en) * | 2014-11-11 | 2015-03-25 | 西北农林科技大学 | Method for preparing biodiesel by virtue of Soxhlet extraction device |
| CN105219419A (en) * | 2015-10-20 | 2016-01-06 | 上海应用技术学院 | A kind of method adopting mud to prepare biofuel |
-
2017
- 2017-07-28 CN CN201710630967.1A patent/CN109306287A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101018867A (en) * | 2003-10-02 | 2007-08-15 | 密西西比州立大学 | Production of biodiesel and other valuable chemicals from wastewater treatment plant sludges |
| US20100175312A1 (en) * | 2009-01-13 | 2010-07-15 | Allan Donald Roden | Method for producing biodiesel material |
| CN102925294A (en) * | 2012-11-26 | 2013-02-13 | 西安建筑科技大学 | Mehtod for preparing biodiesel by floating slag from in-situ esterification sewage treatment plant |
| CN104004552A (en) * | 2014-05-29 | 2014-08-27 | 中国人民大学 | Method for preparing biodiesel from municipal sludge based on in-situ ester exchange |
| CN104450208A (en) * | 2014-11-11 | 2015-03-25 | 西北农林科技大学 | Method for preparing biodiesel by virtue of Soxhlet extraction device |
| CN105219419A (en) * | 2015-10-20 | 2016-01-06 | 上海应用技术学院 | A kind of method adopting mud to prepare biofuel |
Non-Patent Citations (2)
| Title |
|---|
| KAMCHAI NUITHITIKUL等: "activity of sulfated aluminium-tin mixed oxides for the esterification of free fatty acids in crude palm oil", 《INTERNATIONAL JOURNAL OF GREEN ENERGY》 * |
| WORAWOOT PRASITTURATTANACHAI AND KAMCHAI NUITHITIKUL: "Esterification of Free Fatty Acids in Crude Palm Oil Using Alumina-Doped Sulfated Tin Oxide as a Catalyst", 《INTERNATIONAL SCHOLARLY AND SCIENTIFIC RESEARCH & INNOVATION》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112174475A (en) * | 2019-07-02 | 2021-01-05 | 中国人民大学 | Low-temperature drying synergistic lipid extraction treatment method for sludge |
| CN114192186A (en) * | 2020-09-02 | 2022-03-18 | 中国人民大学 | Carbon-based catalyst material and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Li et al. | Solid superacid catalyzed fatty acid methyl esters production from acid oil | |
| CN102021082A (en) | Method for preparing fatty acid methyl ester and glycerol from kitchen waste oil by utilizing acid-base two-step method | |
| CN102465058A (en) | Production process for preparing biodiesel | |
| CN100590177C (en) | Process of preparing biodiesel oil with pricklyash seed oil in high acid value | |
| CN101696372A (en) | Method for preparing biodiesel by solid acid-base two-step method | |
| CN101314131A (en) | Preparation for modified hydrotalcite solid base catalyst for preparing biological diesel oil | |
| CN103694203B (en) | Method of catalyzing fructose by cellulose base sulfonic acid catalyst to prepare 5-hydroxymethyl furfural | |
| CN109306287A (en) | A method of biodiesel is prepared by raw material of sludge | |
| CN102703135B (en) | Method for producing biodiesel | |
| CN101735845A (en) | Method for separating and purifying biodiesel | |
| CN105618133B (en) | Magnetic glucosyl group solid acid catalyst and its preparation method and application | |
| CN100389101C (en) | Production of Guerbet alcohol | |
| CN102559374B (en) | Method for preparing biodiesel from microalgae through one-step method by utilizing supercritical methanol | |
| CN102671712A (en) | Preparation method of novel solid superacid catalyst and application thereof in catalysis of microcrystalline cellulose for synthesis of levulinic acid | |
| CN100375780C (en) | Production of biological diesel oil with solid alkali | |
| CN208532736U (en) | Utilize the system of waste grease production biodiesel | |
| CN104624242B (en) | A kind of biodiesel synthesis acidic ion liquid immobilized AlCl_3 catalyst and preparation method thereof | |
| CN101642716B (en) | Preparation method and application of alkaline earth metal glyceride catalyst | |
| CN115254143B (en) | Preparation method and application of carbon-based solid acid catalyst | |
| WO2015069129A1 (en) | Process and catalyst for obtaining fatty acid methyl esters | |
| CN109439426A (en) | A kind of arrow-leaved oleaster oil and preparation method thereof and purposes as biodiesel raw material | |
| CN108927217A (en) | A kind of solid base catalyst based on polyaniline-coated carbon material and its application in preparation biodiesel | |
| CN112121818B (en) | Magnetic carbon-based catalyst, preparation method and application | |
| CN108927218A (en) | A kind of polyaniline-coated biology carbon material and its preparing the application in solid base | |
| CN104560375B (en) | A kind of extracting method of microalgae grease |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190205 |
|
| RJ01 | Rejection of invention patent application after publication |