CN102583855B - Oil-water separation process of pulpifying centrifugal treatment system - Google Patents
Oil-water separation process of pulpifying centrifugal treatment system Download PDFInfo
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- CN102583855B CN102583855B CN201210018749.XA CN201210018749A CN102583855B CN 102583855 B CN102583855 B CN 102583855B CN 201210018749 A CN201210018749 A CN 201210018749A CN 102583855 B CN102583855 B CN 102583855B
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Abstract
The invention discloses an oil-water separation process of a pulpifying centrifugal treatment system. The pulpifying centrifugal treatment system comprises a pulp beater, a sand settling device, a horizontal centrifuge, a heater, a vertical centrifuge and a pulp tank. The oil-water separation process comprises the steps as follows: a preparation step, a primary heating step, a primary centrifugation step, a secondary heating step, a secondary centrifugation step and a hydration and pulp-beating step. Hydrated beaten pulp continuously and mutually collides with wear-resistant material in the equipment at a high speed and is ground into thickened pulp material, so that the digestion rate of a back-section anaerobic fermentation system and the biogas yield are increased; a secondary centrifugation step is added, so that the design flow of the oil-water separation process is reasonable, the next step vertical centrifugation effect is facilitated, and the outlet oil concentration and the operation efficiency are increased; a good centrifugal oil outlet effect is achieved, and the water content of obtained thick oil and the oil content of wastewater material are low; and the back-section anaerobic fermentation efficiency is improved, oil-water separation of the material is conducted more thoroughly and re-consumption of energy is avoided.
Description
Technical field
The present invention relates to the technical field that in solid waste, oil-containing water is processed, particularly a kind of oily water separation technique of pulp centrifugal processing system.
Background technology
Changing food waste mainly refers to the food waste thing that family, dining room, catering trade etc. produce, and is commonly called as swill, is an important part for rubbish in cities and towns; In view of the diet style of China, changing food waste quantity is huge; Because changing food waste contains numerous organism compositions, once changing food waste rots, the harm of its generation is inestimable.Kitchen castoff major ingredient comprises rice and flours food residues, vegetables, vegetable and animals oils, meat, bone etc., chemical constitution, has starch, Mierocrystalline cellulose, protein, lipid and inorganic salt etc.The feature of kitchen castoff is that organic content is abundant, moisture content is high, perishable, if do not carried out, reasonably do not dispose in time, not only affect the city appearance of the city and human settlement, and easily grow harmful materials such as pathogenic micro-organism, mycotoxin, the harm people's daily life and healthy.
In changing food waste, include more oily thing composition, how oiliness material in changing food waste is extract and operation operation more efficiently? numerous vital points that producer considers of processing.
In the prior art, the Chinese patent application patent < < oil-water separating treatment method for kitchen waste > > (notification number is CN202038949U) that is CN201120139561.1 as the patent No.; The conical returnable, membrane biological reaction pond and the gun barrel that by dewatering unit, unidirectional transfer roller, settling bowl, convolution wind energy conversion system, the first steam heater, triphase horizontal whizzer, minute profit pond, the second steam heater, vertical centrifugal machine, rubbish material storage strainer, settler, lower end, are tip carry out oily water separation processing; This technology adopts secondary centrifuging mode to carry out oily water separation, and its both temperature intervals differ larger, and oily water separation is not thorough, exists considerable oil content to be flowed away easily yet, is unfavorable for improving the rate of recovery; Some liquid that produce in oily water separation treating processes, solid kind material, it does not relate to corresponding subsequent disposal countermeasure.
Summary of the invention
Technical problem to be solved by this invention is the present situation for prior art, provides that a kind of flow scheme design is reasonable, operational efficiency is high, biogas output is high, goes out the high and oily water separation of the oil concentration oily water separation technique of pulp centrifugal processing system thoroughly.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of oily water separation technique of pulp centrifugal processing system, this pulp centrifugal processing system includes hollander, sand-settling device, horizontal centrifuge, well heater, vertical centrifugal machine and slurry pool, it is characterized in that: this oily water separation technique includes following steps:
Preparation step: prepare a raw material that includes grease composition, and this raw material is in advance through pulverizing, Screening Treatment;
Sand setting removal step: raw material is invested in sand-settling device successively, and sand-settling device intermediate configurations has the compartment being arranged in juxtaposition according to straight line; Raw material is divided into two partial material after compartment filters: a part of material is impurity, and another part material is treating material;
A heating steps: treating material is delivered in primary heater, and treating material is heated into the material first to be separated of 55 ± 10 ℃;
A centrifugation step: first material to be separated is conveyed into the first horizontal centrifuge entrance, start the first horizontal centrifuge, first material to be separated is separated into two partial material: a part of material is light phase oil-water mixture, and this light phase oil-water mixture is directly inputted in minute profit pond; Two partial material are heavy phase liquid state and solid-phase mixture;
Middle centrifugation step: dispose the second horizontal centrifuge in middle centrifugation step, lighter phase oil-water mixture is preheated to 70 ± 15 ℃, and be separated into two partial material by this second horizontal centrifuge: a part is lighter phase oil-water mixture, and another part material is slightly to weigh mixture; Slightly heavy mixture is connected with hollander entrance, and hollander entrance front end position is equipped with the intermediate pool matching; The isolated slightly heavy mixture of the second horizontal centrifuge, the isolated heavy phase liquid state of the first horizontal centrifuge and solid-phase mixture all import to this intermediate pool;
Second heating step: lighter phase oil-water mixture is delivered in secondary heater, and the secondary material to be separated that light phase oil-water mixture is heated into 85 ± 10 ℃ of temperature;
Secondary centrifuging step: secondary material to be separated is conveyed into vertical centrifugal machine entrance, starts vertical centrifugal machine, secondary material to be separated is separated into two partial material: a part of material is industrial thick grease, and industrial thick grease is directly in grease storage tank; Another part material is waste water material, and this waste water material is directly delivered in slurry pool;
Aquation making beating step: liquid and solid-phase mixture is conveyed into the entrance of hollander by heavy phase, starts hollander, heavy phase liquid state is ground into underflow material with solid-phase mixture, and the underflow mass transport grinding enters in slurry pool;
Compartment in sand-settling device is at least two, and all disposes filtering net between adjacent compartment;
Sand-settling device exit disposes former pond, and treating material is first stored in this former pond; In aquation making beating step, the largest particle diameter of underflow material is 0.3 μ m to 800 μ m; Primary heater is connected with vapour pipe, and secondary heater is also connected with vapour pipe; And vapour pipe is connected with outside vapour source.
Compared with prior art, the present invention includes hollander, sand-settling device, horizontal centrifuge, well heater, vertical centrifugal machine and slurry pool, this oily water separation technique includes following steps: preparation step, a heating steps, centrifugation step, second heating step, secondary centrifuging step and an aquation making beating step.The invention has the advantages that: aquation making beating constantly with equipment in the mutual high-speed impact of high-abrasive material, grind into underflow material, improve the digestion rate of back segment anaerobic fermentation system, significantly reduce the generation of natural pond slag, improve biogas output; Set up secondary centrifuging step, light phase oil-water mixture is further divided into two kinds of materials that deal approaches relatively, its design cycle is reasonable, is beneficial to next step vertical centrifugal effect, improves and oil concentration and operational efficiency; Centrifugal fuel-displaced good, the water ratio oil length low, waste water material that obtains thick grease is low; Thick grease, as industrial chemicals in short supply, is widely used in various chemical enterprises, solves sewer oil return to the harm that dining table brings from source; Back segment anaerobically fermenting efficiency is improved, makes the oily water separation of material more thorough, and the anaerobically fermenting stage do not need the secondary heating reaction conditions that can reach a high temperature, avoided the consumption again of energy.
Accompanying drawing explanation
Fig. 1 is the process schematic representation of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
As shown in Figure 1, the embodiment of the present invention, an oily water separation technique for pulp centrifugal processing system, this pulp centrifugal processing system includes hollander, sand-settling device, horizontal centrifuge, well heater, vertical centrifugal machine and slurry pool, and this oily water separation technique includes following steps:
Preparation step: prepare a raw material that includes grease composition, and this raw material is in advance through pulverizing, Screening Treatment;
Sand setting removal step: raw material is invested in sand-settling device successively, and sand-settling device intermediate configurations has the compartment being arranged in juxtaposition according to straight line; Raw material is divided into two partial material after compartment filters: a part of material is impurity, and another part material is treating material;
A heating steps: treating material is delivered in primary heater, and treating material is heated into the material first to be separated of 55 ± 10 ℃;
A centrifugation step: first material to be separated is conveyed into the first horizontal centrifuge entrance, start the first horizontal centrifuge, first material to be separated is separated into two partial material: a part of material is light phase oil-water mixture, and this light phase oil-water mixture is directly inputted in minute profit pond; Two partial material are heavy phase liquid state and solid-phase mixture, and heavy phase is liquid and solid-phase mixture is delivered to hollander;
Second heating step: the light phase oil-water mixture in minute profit pond is delivered in secondary heater, and the secondary material to be separated that light phase oil-water mixture is heated into 85 ± 10 ℃ of temperature;
Secondary centrifuging step: secondary material to be separated is conveyed into vertical centrifugal machine entrance, starts vertical centrifugal machine, secondary material to be separated is separated into two partial material: a part of material is industrial thick grease, and industrial thick grease is directly in grease storage tank; Another part material is waste water material, and this waste water material is directly delivered in slurry pool;
Aquation making beating step: liquid and solid-phase mixture is conveyed into the entrance of hollander by heavy phase, starts hollander, heavy phase liquid state is ground into underflow material with solid-phase mixture, and the underflow mass transport grinding enters in slurry pool.
In aquation making beating step, the largest particle diameter of underflow material is 0.3 μ m to 800 μ m.
Primary heater is connected with vapour pipe, and secondary heater is also connected with vapour pipe; And vapour pipe is connected with outside vapour source.Compartment in sand-settling device is at least two, and all disposes filtering net between adjacent compartment.Sand-settling device exit disposes former pond, and treating material is first stored in this former pond.
Aquation making beating constantly with equipment in the mutual high-speed impact of high-abrasive material, grind into underflow material, and underflow material diameter≤10 order, the macrobead organic materials of unfavorable microorganism digestion can effectively improve the digestion rate of back segment anaerobic fermentation system after making homogeneous slurry, significantly reduce the generation of natural pond slag, improve biogas output.
Centrifugation step in the middle of being also provided with between centrifugation step and secondary centrifuging step; In middle centrifugation step, dispose the second horizontal centrifuge, the centrifugal light phase oil-water mixture out of the first horizontal centrifuge is preheated to 70 ± 15 ℃, and be separated into two partial material by this second horizontal centrifuge: a part is lighter phase oil-water mixture, and another part material is slightly to weigh mixture; Slightly heavy mixture is connected with hollander entrance, and lighter phase oil-water mixture is connected with vertical centrifugal machine entrance.Set up secondary centrifuging step, light phase oil-water mixture is further divided into two kinds of materials that deal approaches relatively, its design cycle is reasonable, is beneficial to next step vertical centrifugal effect, improves and oil concentration and operational efficiency.
Hollander entrance front end position is equipped with the intermediate pool matching; The isolated slightly heavy mixture of the second horizontal centrifuge, the isolated heavy phase liquid state of the first horizontal centrifuge and solid-phase mixture all import to this intermediate pool.
Centrifugal fuel-displaced good, oil length≤0.2% of water ratio≤3% of resulting thick grease, waste water material in this step.Thick grease, as industrial chemicals in short supply, is widely used in various chemical enterprises, solves sewer oil return to the harm that dining table brings from source.Because grease molecular weight is large and be difficult to acidifying, become small molecules acid, anaerobically fermenting speed is low, so this step can make back segment anaerobically fermenting efficiency be improved; It is more thorough that the temperature raising of this step makes the oily water separation of material in addition, and the anaerobically fermenting stage do not need the secondary heating reaction conditions that can reach a high temperature, avoided the consumption again of energy.
The stored liquid form mixt of slurry pool is high-temperature, along with treating processes continue carry out, liquid form mixt is more and more in slurry pool, by other water pumps in pond are regularly outer, is evacuated to sewage work, or anaerobically fermenting fills with, and carries out rear profound processing.
The invention has the advantages that: aquation making beating constantly with equipment in the mutual high-speed impact of high-abrasive material, grind into underflow material, improve the digestion rate of back segment anaerobic fermentation system, significantly reduce the generation of natural pond slag, improve biogas output; Set up secondary centrifuging step, light phase oil-water mixture is further divided into two kinds of materials that deal approaches relatively, its design cycle is reasonable, is beneficial to next step vertical centrifugal effect, improves and oil concentration and operational efficiency; Centrifugal fuel-displaced good, the water ratio oil length low, waste water material that obtains thick grease is low; Thick grease, as industrial chemicals in short supply, is widely used in various chemical enterprises, solves sewer oil return to the harm that dining table brings from source; Back segment anaerobically fermenting efficiency is improved, makes the oily water separation of material more thorough, and the anaerobically fermenting stage do not need the secondary heating reaction conditions that can reach a high temperature, avoided the consumption again of energy.
Most preferred embodiment of the present invention is illustrated, and the various variations of being made by those of ordinary skills or remodeling can not depart from the scope of the present invention.
Claims (1)
1. an oily water separation technique for pulp centrifugal processing system, this pulp centrifugal processing system includes hollander, sand-settling device, horizontal centrifuge, well heater, vertical centrifugal machine and slurry pool, it is characterized in that: this oily water separation technique includes following steps:
Preparation step: prepare a raw material that includes grease composition, and this raw material is in advance through pulverizing, Screening Treatment;
Sand setting removal step: described raw material is invested in sand-settling device successively, and described sand-settling device intermediate configurations has the compartment being arranged in juxtaposition according to straight line; Described raw material is divided into two partial material after compartment filters: a part of material is impurity, and another part material is treating material;
A heating steps: treating material is delivered in primary heater, and treating material is heated into the material first to be separated of 55 ± 10 ℃;
A centrifugation step: first material to be separated is conveyed into the first horizontal centrifuge entrance, start the first horizontal centrifuge, first material to be separated is separated into two partial material: a part of material is light phase oil-water mixture, and this light phase oil-water mixture is directly inputted in minute profit pond; Two partial material are heavy phase liquid state and solid-phase mixture;
Middle centrifugation step: dispose the second horizontal centrifuge in described middle centrifugation step, light phase oil-water mixture is preheated to 70 ± 15 ℃, and be separated into two partial material by this second horizontal centrifuge: a part is lighter phase oil-water mixture, and another part material is slightly to weigh mixture; Described slightly heavy mixture is connected with hollander entrance, and described hollander entrance front end position is equipped with the intermediate pool matching; The isolated slightly heavy mixture of the second horizontal centrifuge, the isolated heavy phase liquid state of the first horizontal centrifuge and solid-phase mixture all import to this intermediate pool;
Second heating step: lighter phase oil-water mixture is delivered in secondary heater, and the secondary material to be separated that will lighter phase oil-water mixture be heated into 85 ± 10 ℃ of temperature;
Secondary centrifuging step: secondary material to be separated is conveyed into vertical centrifugal machine entrance, starts vertical centrifugal machine, secondary material to be separated is separated into two partial material: a part of material is industrial thick grease, and industrial thick grease is directly in grease storage tank; Another part material is waste water material, and this waste water material is directly delivered in slurry pool;
Aquation making beating step: liquid and solid-phase mixture is conveyed into the entrance of hollander by heavy phase, starts hollander, heavy phase liquid state is ground into underflow material with solid-phase mixture, and the underflow mass transport grinding enters in slurry pool;
Compartment in described sand-settling device is at least two, and all disposes filtering net between adjacent compartment;
Described sand-settling device exit disposes former pond, and described treating material is first stored in this former pond; In described aquation making beating step, the largest particle diameter of underflow material is 0.3 μ m to 800 μ m; Described primary heater is connected with vapour pipe, and described secondary heater is also connected with vapour pipe; And vapour pipe is connected with outside vapour source.
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| CN102795742A (en) * | 2012-07-20 | 2012-11-28 | (株)新海Ecotech | Wastewater treatment method in kitchen waste recycling treatment process |
| CN103785671A (en) * | 2014-01-27 | 2014-05-14 | 普拉克环保系统（北京）有限公司 | Oil recovery system and method used for kitchen waste treatment |
| CN105347655B (en) * | 2015-09-24 | 2019-02-01 | 北京洁神福吉环保科技有限公司 | A kind of refuse disposal system, method and its application |
| CN109609165A (en) * | 2019-01-23 | 2019-04-12 | 东方希望(三门峡)铝业有限公司 | Gas tar three phase separation technique and gas tar three phase separation equipment |
| CN111715667A (en) * | 2020-06-29 | 2020-09-29 | 南京明豪环保科技有限公司 | Method and system for separating waste oil from kitchen waste |
| CN113060884B (en) * | 2021-03-25 | 2022-11-25 | 中汇金源（北京）科技发展有限公司 | Petrochemical oily sewage and oil sludge purifying and recycling system |
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| CN1395977A (en) * | 2002-06-20 | 2003-02-12 | 蒋兴发 | Multi-layer filter pool |
| CN101921809A (en) * | 2010-07-28 | 2010-12-22 | 宁波开诚生态技术有限公司 | Kitchen waste disposal method |
| CN101954369A (en) * | 2009-07-20 | 2011-01-26 | 宁波开诚生态技术有限公司 | Emergency treatment method for kitchen waste |
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| JP3572021B2 (en) * | 2001-01-31 | 2004-09-29 | 株式会社ヴィド | Waste treatment method and treatment system containing organic matter such as kitchen waste |
| CN101268803B (en) * | 2007-03-19 | 2011-09-07 | 宁波开诚生态技术有限公司 | Processing method for castoff of food and drink |
| CN101366446B (en) * | 2007-08-16 | 2011-11-09 | 宁波开诚生态技术有限公司 | Method for preparing feedstuff with fermentation of food and drink castoff |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1395977A (en) * | 2002-06-20 | 2003-02-12 | 蒋兴发 | Multi-layer filter pool |
| CN101954369A (en) * | 2009-07-20 | 2011-01-26 | 宁波开诚生态技术有限公司 | Emergency treatment method for kitchen waste |
| CN101921809A (en) * | 2010-07-28 | 2010-12-22 | 宁波开诚生态技术有限公司 | Kitchen waste disposal method |
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