CN102229863A - Method for recovering grease from oil-containing argil residue by squeezing - Google Patents
Method for recovering grease from oil-containing argil residue by squeezing Download PDFInfo
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- CN102229863A CN102229863A CN2011101490235A CN201110149023A CN102229863A CN 102229863 A CN102229863 A CN 102229863A CN 2011101490235 A CN2011101490235 A CN 2011101490235A CN 201110149023 A CN201110149023 A CN 201110149023A CN 102229863 A CN102229863 A CN 102229863A
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- oil
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- slag
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- containing argil
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
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Abstract
The invention discloses a method for recovering grease from oil-containing argil residue by squeezing, which comprises the following steps: screening, purifying, heating to 40 to 90 DEG C, stirring, and prepressing to form blocks, wherein the squeezing pressure is 0.1 to 0.8MPa; squeezing under a high pressure, namely performing the high-pressure squeezing of the oil-containing argil residue under a condition of a pressure of 20.0 to 70.0MPa, to recover oil and dry argil blocks, standing the recovered oil and performing oil and water separation. In the invention, the adopted squeezing recovery process is simple, the energy consumption of the squeezing recovery process is low, the cost of the production equipment and the cost of production operation are both low, the production is safe and reliable, and the method is a clean and environment-friendly physical recovery method; and when the method is used, the recycling of the grease from the oil-containing argil residue is realized, the recycling of argil is realized, environment pollution is avoided, and high social, economic and environment-protection values in aspects of improvement of resource utilization rate, energy conservation, emission reduction and the like are achieved.
Description
Technical field:
The present invention relates to a kind of with greasy method in the milling process recovery oil-containing argil slag.
Background technology:
In existing oil and fat refining process, must be SiO with main component
2, Al
2O
3, Fe
2O
3, MgO, Na
2O, CaO and K
2The atlapulgite of O carries out adsorption bleaching, the consumption of atlapulgite be pending oil heavy 2%～5%.Useless carclazyte after the decolouring is the tankage of oil and fat refining enterprise, wherein except that containing carclazyte, also contains the neutral grease of absorption, nonhydratable phosphatide, natural pigment, lipid acid and VITAMIN etc., generally is adsorbed with 20%～50% grease in the useless carclazyte after the decolouring.According to the production technique of carclazyte refining decolouring, the oleaginousness in the useless carclazyte has bigger variation, and oleaginousness is low in the clay dregs behind the employing continuous production processes decolorization refining, and oleaginousness height in the clay dregs behind the employing batch production technology decolorization refining.For many years, the useless carclazyte of the decolouring of most of oil refining plant is used for coal-fired batching, directly mixes acting as a fuel with coal, or directly buries as waste and lose, and does not obtain fully reasonably development and use.The raising of and environmental consciousness energy-conservation along with people, people have launched research to the useless carclazyte utilization after the decolouring, and propose " solvent method " and " aqua method " and reclaim the decolouring grease treatment process in the carclazyte of giving up.
" solvent method " is that the employing solvent directly dissolves the grease in the clay dregs, and then reclaims and extract grease.Solvent is selected normal hexane, No. 6 solvent oils, sherwood oil or hexanaphthenes for use, and the grease rate of recovery is 60%～65%.Typical solvent method treatment process is as follows: the oil-containing argil slag is transported to carries in the oil tank, add solvent, and temperature control extraction under whipped state, extraction finishes the back sedimentation, evaporates after solvent layer is told, gas is carried, obtain reclaiming grease after distilling.Albic horizon is used the fresh solvent extracted several times again, to reclaim the Residual oil in the carclazyte as far as possible.Residual oil content is about 7% in the clay dregs after the employing solvent method is handled.
The blue few group of contriver discloses a kind of non-slurry pelletizing technology and has extracted greasy technology in the clay dregs in patent ZL02126737.5, clay dregs and binding agent are mixed the back granulation by a certain percentage, particle after the granulation soaks in solvent, extract the mixing oil of grease and solvent, obtain crude oil through processing such as pervaporations.The recovery method of this patent comes down to solvent method.
The grease treatment process that aqua method reclaims in the oil-containing argil slag is as follows: the oil-containing argil slag directly adds water post-heating, stirring, adjusting pH, temperature control stirring, standing sedimentation separation, separating oil water and solid phase carclazyte, profit obtains reclaiming grease, the grease rate of recovery about 60% mutually after treatment.Add tensio-active agent in the aqua method and can reduce water consumption, improve the greasy rate of recovery.At present, aqua method still is in the development phase now, does not enter application as yet.
In solvent method recovery grease process, not only need to use inflammable, explosive solvent, and in treating processes, also need through heating, extraction, sedimentation, evaporation, gas is carried with rectifying reclaims operation such as solvent, the treating processes more complicated, the consumption of solvent is bigger in the entire treatment process, reach 5%～6%, grease also has certain loss, influences greasy actual recovered rate, equipment has high input simultaneously, and the cost of operation is than higher.
The not only greasy rate of recovery of aqua method is lower, and residual band portion grease in the water directly has influence on greasy actual recovered rate, and contains grease in the waste water producing again, and the COD of waste water is higher, can bring secondary environmental issue.
Summary of the invention:
From the oil-containing argil slag, to reclaim greasy processing cost in order further reducing, to improve the grease rate of recovery in the oil-containing argil slag, prevent that recycling from producing secondary environment and polluting, the object of the present invention is to provide a kind of oil-containing argil slag squeezing to reclaim greasy method.
Oil-containing argil slag squeezing of the present invention is reclaimed greasy method and is comprised the steps:
The first step, screening and removing impurities is screened the oil-containing argil slag with sieve, removes impurity;
In second step, heated and stirred also stirs sieve oil-containing argil slag later in conveying belt is transported to the steam heating agitator, and control oil-containing argil slag temperature is in 40 ℃～90 ℃ scope;
In the 3rd step, cake of press becomes piece, and the oil-containing argil slag after the heating is carried out to the cake precompressed with the precompressed squeezing machine, gets the pre-briquetting of oil-containing argil slag; Squeeze pressure is controlled at 0.1Mpa～0.8Mpa;
The 4th step, high-pressure compressing, the pre-briquetting of oil-containing argil slag that the 3rd step was obtained carries out high-pressure compressing with the high-pressure compressing machine, gets refiltered oil and mummification carclazyte piece, and squeezing is controlled in 20.0Mpa～70.0Mpa scope;
The 5th step, reclaim, leave standstill, separate, collect the resulting recovery grease of squeezing with water-and-oil separator, time of repose carried out oily water separation after 8 hours.
Further, in second step, oil-containing argil slag temperature is 50 ℃～70 ℃.
Further, in the 3rd step, squeeze pressure is 0.4Mpa～0.5MPa.
Further, in the 4th step, squeeze pressure is 40.0Mpa～60.0MPa.
In the present invention, all use squeezing machine in the 3rd step and the 4th step, but the squeeze pressure difference that both applied contains less water in the recovery grease that is obtained, leave standstill branch vibration layer by water-and-oil separator and can obtain more purified grease.
Advantage of the present invention embody a concentrated expression of following some:
1. the oil-containing argil slag is heated to 40 ℃～90 ℃ temperature ranges, because of the grease in the oil-containing argil slag has higher viscosity under lower temperature, the purpose of heating is for reducing the grease viscosity, being convenient in expressing process squeezing grease be extruded, thereby obtaining the higher grease rate of recovery.
2. the recovery method that the present invention taked is pure physical recovery method, in that being reclaimed greasy technological process, oil-containing argil slag milling process do not use poisonous, inflammable and explosive organic solvent, with respect to existing extracting process is safe cleaner production process, and other reclaim technology and method can't realize.
3. adopting the grease in the milling process recovery oil-containing argil slag, under pressure, the grease that relies on physics, chemical action to be adsorbed on carclazyte particle voids or surface in the oil-containing argil slag is extruded from the gap between the carclazyte particle, is pure physical action.In the expressing process, increase along with pressure, gap between the particle is littler, and the resistance to flow that grease seepage flow comes out is bigger, therefore, there is stronger corresponding relation between the effusive resistance to flow of the increase of pressure and grease, promptly will obtain the higher grease rate of recovery, squeeze pressure will strengthen, but because of the resistance to flow increase, the grease rate of recovery increases slowly, so squeeze pressure is controlled at certain scope.
4. after squeezing grease was come out, because of containing a spot of water, a part was that clay dregs contained originally, and a part is that the water vapour heating is brought into, as long as simple and easy separation in water-and-oil separator can obtain the high purity grease.
5. the carclazyte piece that obtains after squeezing is handled extracts with solvent method and removes remaining grease, and the carclazyte after reextraction deoils can be reused.
In sum, it is simple that technology is reclaimed in the squeezing that the present invention taked, it is lower that technology institute consumed energy is reclaimed in squeezing, production unit cost and production run cost are all lower, production safety is reliable, is the physical recovery method of clean environment firendly, has both solved greasy recycling in the oil-containing argil slag, realized recycling of carclazyte again, aspects such as environmental pollution, raising resource utilization and energy-saving and emission-reduction have higher society, economy and the value of environmental protection.
Description of drawings:
Fig. 1 is a technological principle schematic flow sheet of the present invention.
Among the figure: the 1-transport trolley; The 2-knot screen that sieves; The 3-conveying belt; 4-steam heating agitator; 5-precompressed squeezing machine; 6-high-pressure compressing machine; The 7-water-and-oil separator.
Embodiment:
Following examples will be in conjunction with the accompanying drawings 1, and the present invention is further illustrated:
Embodiment 1: with oleaginousness is that 20% (wt%) clay dregs is handled for 1000 kilograms as follows:
The first step, screening and removing impurities is transported to the oil-containing argil slag in the knot screen 2 that sieves with transport trolley 1, is that 10 removal of impurities sieve carries out screening and removing impurities to the oil-containing argil slag with the order number;
In second step, heated and stirred also stirs sieve oil-containing argil slag later in conveying belt 3 is sent into steam heating agitator 4, and control oil-containing argil slag temperature is in 48 ℃～50 ℃ scope;
In the 3rd step, cake of press becomes piece, gives precompressed squeezing machine 5 with the oil-containing argil slag after the heating by continuous conveyor 3 and is carried out to the cake precompressed, gets the pre-briquetting of oil-containing argil slag; Squeeze pressure is controlled at 0.1Mpa～0.8Mpa;
The 4th step, high-pressure compressing, the pre-briquetting of oil-containing argil slag that the 3rd step was obtained carries out high-pressure compressing with high-pressure compressing machine 6, and squeeze pressure is controlled at 50Mpa, gets refiltered oil and mummification carclazyte piece, and wherein, oil length is 6.4% in the mummification carclazyte piece;
The 5th step, reclaim, leave standstill, separate, the grease that squeezing is obtained flows in the water-and-oil separator 7, and time of repose carried out oily water separation after 8 hours, get 136 kilograms of greases, and the grease rate of recovery is 68%.
Embodiment 2: the recovery processing step according to embodiment 1 is handled, and in second step, the clay dregs temperature is controlled at 60 ℃, in the 4th step high-pressure compressing step, squeeze pressure is controlled at 60MPa, obtains 158 kilograms of greases, the grease rate of recovery 79%, squeezing back residual oil content 4.2%.
Embodiment 3: the recovery processing step according to embodiment 1 is handled, in second step, and 90 ℃ of control clay dregs temperature, in the 4th step high-pressure compressing step, squeeze pressure is controlled at 70MPa, obtains 180 kilograms of greases, the grease rate of recovery 90%, squeezing back residual oil content 2%.
Claims (4)
1. greasy method is reclaimed in an oil-containing argil slag squeezing, it is characterized in that: comprise the steps:
The first step, screening and removing impurities is screened the oil-containing argil slag with sieve, removes impurity;
In second step, heated and stirred also stirs sieve oil-containing argil slag later in conveying belt (3) is transported to steam heating agitator (4), and control oil-containing argil slag temperature is in 40 ℃～90 ℃ scope;
In the 3rd step, cake of press becomes piece, and the oil-containing argil slag after the heating is carried out to the cake precompressed with precompressed squeezing machine (5), gets the pre-briquetting of oil-containing argil slag; Squeeze pressure is controlled at 0.1Mpa～0.8Mpa;
The 4th step, high-pressure compressing, the pre-briquetting of oil-containing argil slag that the 3rd step was obtained carries out high-pressure compressing with high-pressure compressing machine (6), gets refiltered oil and mummification carclazyte piece, and squeezing is controlled in 20.0Mpa～70.0Mpa scope;
The 5th step, reclaim, leave standstill, separate, collect the resulting recovery grease of squeezing with water-and-oil separator (7), time of repose carried out oily water separation after 8 hours.
2. greasy method is reclaimed in described oil-containing argil slag squeezing according to claim 1, and it is characterized in that: in second step, oil-containing argil slag temperature is 50 ℃～70 ℃.
3. greasy method is reclaimed in described oil-containing argil slag squeezing according to claim 1, and it is characterized in that: in the 3rd step, squeeze pressure is 0.4Mpa～0.5MPa.
4. greasy method is reclaimed in described oil-containing argil slag squeezing according to claim 1, and it is characterized in that: in the 4th step, squeeze pressure is 40.0Mpa～60.0MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101490235A CN102229863A (en) | 2011-06-03 | 2011-06-03 | Method for recovering grease from oil-containing argil residue by squeezing |
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|---|---|---|---|
| CN2011101490235A CN102229863A (en) | 2011-06-03 | 2011-06-03 | Method for recovering grease from oil-containing argil residue by squeezing |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105567433A (en) * | 2015-12-17 | 2016-05-11 | 安徽嘉旗粮油工程技术有限公司 | Production method for extracting grease from diatomite of solid wastes of edible oil factories |
| CN109609284A (en) * | 2019-01-31 | 2019-04-12 | 郑州远洋油脂工程技术有限公司 | A kind of spent bleaching clay oil extracting process and its system |
| CN111254019A (en) * | 2020-02-12 | 2020-06-09 | 常州市金坛区维格生物科技有限公司 | Method for refining clay oil |
| CN113322133A (en) * | 2021-05-31 | 2021-08-31 | 秦皇岛华阳肥业有限公司 | Method for extracting clay oil from waste clay |
| CN113337339A (en) * | 2021-05-21 | 2021-09-03 | 郑州市鼎盛机械制造有限公司 | Separation device and separation method for oil wax and grease in diatomite |
| CN117187000A (en) * | 2023-08-30 | 2023-12-08 | 南和县宏达油榨机械制造有限公司 | Method for recovering grease by squeezing oil-containing carclazyte slag |
Citations (1)
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| CN1954930A (en) * | 2005-10-25 | 2007-05-02 | 东莞市创盈资源再生科技有限公司 | Oil-containing argil harmless processing technology |
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2011
- 2011-06-03 CN CN2011101490235A patent/CN102229863A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1954930A (en) * | 2005-10-25 | 2007-05-02 | 东莞市创盈资源再生科技有限公司 | Oil-containing argil harmless processing technology |
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| 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 20091215 任佩峰 废白土中提取油脂及其综合利用 13-15 1-4 , 第12期 * |
| 《中国油脂》 19990430 钱向明等 从油脂脱色废白土中回收油脂的研究 16-17 1-4 第24卷, 第2期 * |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105567433A (en) * | 2015-12-17 | 2016-05-11 | 安徽嘉旗粮油工程技术有限公司 | Production method for extracting grease from diatomite of solid wastes of edible oil factories |
| CN109609284A (en) * | 2019-01-31 | 2019-04-12 | 郑州远洋油脂工程技术有限公司 | A kind of spent bleaching clay oil extracting process and its system |
| CN109609284B (en) * | 2019-01-31 | 2024-03-22 | 郑州远洋油脂工程技术有限公司 | Process and system for extracting oil from waste clay |
| CN111254019A (en) * | 2020-02-12 | 2020-06-09 | 常州市金坛区维格生物科技有限公司 | Method for refining clay oil |
| CN113337339A (en) * | 2021-05-21 | 2021-09-03 | 郑州市鼎盛机械制造有限公司 | Separation device and separation method for oil wax and grease in diatomite |
| CN113322133A (en) * | 2021-05-31 | 2021-08-31 | 秦皇岛华阳肥业有限公司 | Method for extracting clay oil from waste clay |
| CN117187000A (en) * | 2023-08-30 | 2023-12-08 | 南和县宏达油榨机械制造有限公司 | Method for recovering grease by squeezing oil-containing carclazyte slag |
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Application publication date: 20111102 |