CN109869727B - Sludge and swill-cooked dirty oil co-incineration disposal method - Google Patents
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- CN109869727B CN109869727B CN201910115342.0A CN201910115342A CN109869727B CN 109869727 B CN109869727 B CN 109869727B CN 201910115342 A CN201910115342 A CN 201910115342A CN 109869727 B CN109869727 B CN 109869727B
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Abstract
The invention discloses a sludge and swill-cooked dirty oil collaborative incineration disposal method, which comprises the following steps: step 1, respectively carrying out sludge drying treatment and illegal cooking oil preparation of bio-fuel oil; and 2, collaborative incineration: the bio-fuel oil is prepared by the bio-fuel oil preparation unit which sprays the dried sludge from the sludge drying unit and enters the bio-fuel oil preparation unit, the co-incineration unit of the system carries out high-temperature incineration together, and the waste heat of the flue gas generated by the high-temperature incineration is recycled to generate steam or heat conducting oil which is respectively recycled and supplied to the bio-fuel oil preparation unit for preparing the bio-fuel oil and the sludge drying unit for sludge drying treatment, and the flue gas after the waste heat recovery is discharged after multi-stage purification treatment. The method can utilize the waste heat of the collaborative incineration in the process of preparing the bio-fuel oil from the illegal cooking oil as the combustion improver for the incineration of the dried sludge, thereby realizing the purpose of treating wastes with processes of wastes against one another, saving energy and effectively reducing the operation cost.
Description
Technical Field
The invention relates to the field of solid waste disposal, in particular to a sludge and illegal cooking oil co-incineration disposal method.
Background
After the excess sludge discharged from the primary sedimentation tank and the secondary sedimentation tank in the urban sewage treatment plant is concentrated and dehydrated, the water content is reduced to about 80%, and the part of sludge is often called wet sludge and is conveyed to a sludge treatment plant as a raw material to be treated in a centralized way. The sludge has complex components, contains organic matters, water, silt and other components, and also contains various harmful substances including microbial germs, heavy metals, various organic pollutants and the like, and the characteristics cause that the existing various sludge treatment processes have certain limitations. The common sludge treatment and disposal processes comprise landfill, biochemical treatment, incineration, building material utilization and the like worldwide, wherein the landfill process occupies a large amount of land and has secondary pollution risk, the main problems of anaerobic or aerobic and other biochemical treatment modes are that reduction and harmlessness are not obvious, and the building material utilization modes of brick making, cement kiln cooperative disposal and the like are one direction of sludge recycling, but the current domestic problems of low market acceptance, small treatment scale and the like are faced, the technology is undermature, and the popularization is limited. At present, incineration is the most effective mode for sludge treatment and treatment, the reduction, harmlessness, recycling and stabilization effects are most obvious, the incineration can enable organic matters to be completely combusted, pathogens, heavy metals and smoke pollutants to be properly treated, furnace slag is comprehensively utilized, and combustion heat energy is recycled. Dry incineration is becoming the largest technical route in the field of sludge treatment and disposal, and on the other hand, dry incineration faces the main problem of low calorific value of sludge. The sludge has large water content, high ash content and low organic matter content, and the proportion of the sludge to the organic matter exceeds 1: 1, the specific components are greatly influenced by regions, seasons and water treatment processes, and are shown in that the difference in heat value is even multiple times. Taking Japan as an example, the dry basis heat value of municipal sludge reaches more than 4000 Kcal/kg, while the dry basis heat value of municipal sludge in China is more than 1500-2500 Kcal/kg, which is not enough for self-sustaining combustion, and fuels such as diesel oil, natural gas, coal and the like are often required to be added as combustion improvers, thereby greatly improving the operation cost and restricting the effective disposal of the sludge.
The illegal cooking oil is commonly known as waste edible oil, and refers to oil waste which loses edible value and is generated in the deep processing process of edible natural vegetable oil, animal fat, oil and the like. The grease can generate various reactions such as trans-isomerization, oxidation, cracking, polymerization and the like through repeated heating, the product is very complex, the higher the temperature is, the longer the heating time is, the more the polycyclic aromatic hydrocarbon carcinogens are accumulated, the nutritive value is lost, more importantly, the nutrition is extremely adverse to the human health, once the nutrition is obtained by a lawless dealer, the nutrition is greatly harmed after the simple refining and the edible oil are mixed and returned to a dining table. The waste oil is natural animal and vegetable oil and has a certain recycling value, the waste oil is mainly recycled to produce a surfactant and biodiesel, and the related standards of biodiesel (BD100, B5 and the like) are also developed in China. At present, two researches utilizing technical routes mostly use single animal oil or vegetable oil as raw materials, and active groups or fatty acid carbon chain structures of products are relatively single, for example, experimental researches use vegetable oil such as rapeseed oil, peanut oil and the like as diesel fuel or are mixed with petroleum diesel, and test results show that the running performance of the diesel is normal, the diesel is not influenced by low cetane number basically, and the emission concentration of smoke is reduced. The illegal cooking oil is prepared from mixed animal and vegetable oil serving as a raw material, the components become more complex through processing processes of cooking, heating and the like, the recycling difficulty is high, and detection data show that compared with peanut oil and soybean oil, the illegal cooking oil has 35-40 MJ/kg of heat value, basically equivalent heat value and high kinematic viscosity and acid value which exceed 16 times and 23 times of those of the peanut oil respectively. The system has long process flow, large energy consumption and unstable material characteristics and process parameters, and can meet the current quality standard of the biodiesel generally through numerous steps of dehydration and impurity removal, esterification, ester exchange, washing, rectification, refining and the like. From the practical situation, the method has the defects of small market, poor economical efficiency, complex process and unstable operation, and can not solve the problem of treatment of the illegal cooking oil in the production of the surfactant or the biodiesel.
Disclosure of Invention
Based on the problems in the prior art, the invention aims to provide a sludge and waste oil collaborative incineration disposal method, which can treat waste oil and sludge into biofuel oil serving as a combustion improver for sludge drying incineration to realize collaborative treatment with sludge.
The embodiment of the invention provides a sludge incineration and illegal cooking oil collaborative incineration disposal method, which adopts a sludge and illegal cooking oil collaborative incineration disposal system and comprises the following steps:
step 1, respectively carrying out sludge drying treatment and illegal cooking oil preparation of bio-fuel oil, wherein,
sludge drying treatment: sludge with the water content not more than 85 percent is taken as a raw material and conveyed into the sludge drying unit for sludge drying treatment, the heat used for drying the sludge is provided by a sludge waste heat recycling pipeline of the collaborative incineration unit, and the dried sludge is conveyed into the collaborative incineration unit for incineration;
preparing bio-fuel oil from illegal cooking oil: the method comprises the steps of taking waste oil containing 50-70% of water impurities as a raw material, conveying the waste oil into a biofuel oil preparation unit, performing dehydration and impurity removal pretreatment to obtain the waste oil with the water impurity content not more than 5%, performing intermittent neutralization and deacidification reaction treatment, performing standing separation treatment, performing oil-water separation treatment on the oil on the upper layer after the standing separation to obtain biofuel oil, and conveying the biofuel oil into a synergistic incineration unit to serve as a combustion improver for incinerating dried sludge; the heat used for the dehydration and impurity removal pretreatment and the standing separation treatment is the heat provided by the collaborative incineration unit through a fuel oil waste heat recycling pipeline;
and 2, collaborative incineration: the system comprises a sludge drying unit, a biological fuel oil preparation unit, a heat conducting oil recovery unit, a sludge drying unit, a heat conducting oil recovery unit, a heat recovery unit and a heat recovery unit, wherein the biological fuel oil preparation unit is used for preparing biological fuel oil, the biological fuel oil is used for preparing the biological fuel oil, the heat recovery unit is used for recovering waste heat generated by flue gas generated by high-temperature incineration to generate steam or heat conducting oil, and the steam or the heat conducting oil is respectively recycled and supplied to the biological fuel oil preparation unit for.
According to the technical scheme provided by the invention, the sludge and illegal cooking oil collaborative incineration disposal method provided by the embodiment of the invention has the beneficial effects that:
the sludge is respectively dried, the waste oil is prepared into the biofuel oil and then is subjected to the collaborative incineration, so that the bio-fuel oil serving as the combustion improver for the dried sludge incineration is prepared by taking the waste oil as the raw material on the premise of fully utilizing the collaborative incineration waste heat, the waste oil is effectively treated and utilized, the application of the conventional petrochemical diesel oil serving as the combustion improver is reduced, the waste is prepared by waste in a collaborative mode, the treatment process is relatively simple, the operation is convenient, the energy is saved, the operation cost is effectively reduced, and the requirements of the circular economy and the resource-saving society are met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a flow chart of a sludge and waste oil co-incineration disposal method provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of a sludge and waste oil co-incineration disposal system used in the method provided by the embodiment of the invention;
the reference numbers in the figures are: 1-a sludge drying unit; 2-a collaborative incineration unit; 21-a dehydration and impurity removal pretreatment device; 22-a neutralization deacidification device; 23-a standing device; 24-an oil-water separation device; 25-a solid-liquid separation device; 3-a biofuel oil preparation unit; 31-a fluidized bed incinerator; 32-a waste heat recycling device; 33-a flue gas purification device; 34-a fuel oil waste heat recycling pipeline; 35-a sludge waste heat recycling pipeline; a1-sludge inlet; b1-illegal cooking oil inlet; b2-biofuel outlet; b3-petrochemical diesel inlet.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the specific contents of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
As shown in fig. 1, an embodiment of the present invention provides a sludge and waste oil collaborative incineration disposal method, which employs a sludge and waste oil collaborative incineration disposal system (see fig. 2), and includes the following steps:
step 1, respectively carrying out sludge drying treatment and illegal cooking oil preparation of bio-fuel oil, wherein,
sludge drying treatment: sludge with the water content not more than 85 percent is taken as a raw material and conveyed into a sludge drying unit of the system for sludge drying treatment, the heat used for drying the sludge is provided by a sludge waste heat recycling pipeline of a synergetic incineration unit of the system, and the dried sludge is conveyed into the synergetic incineration unit for incineration;
preparing bio-fuel oil from illegal cooking oil: taking waste oil containing 50-70% of water impurities as a raw material, conveying the waste oil into a bio-fuel oil preparation unit of a system, performing dehydration and impurity removal pretreatment to obtain the waste oil with the water impurity content not more than 5%, performing intermittent neutralization and deacidification reaction treatment, performing standing separation treatment, performing oil-water separation treatment on an upper oil product after the standing separation to obtain bio-fuel oil, and conveying the bio-fuel oil into the synergistic incineration unit to be used as a combustion improver for incinerating dried sludge; the heat used for the dehydration and impurity removal pretreatment and the standing separation treatment is the heat provided by the collaborative incineration unit through a fuel oil waste heat recycling pipeline;
and 2, collaborative incineration: the system comprises a sludge drying unit, a biological fuel oil preparation unit, a heat conducting oil recovery unit, a sludge drying unit, a heat conducting oil recovery unit, a heat recovery unit and a heat recovery unit, wherein the biological fuel oil preparation unit is used for preparing biological fuel oil, the biological fuel oil is used for preparing the biological fuel oil, the heat recovery unit is used for recovering waste heat generated by flue gas generated by high-temperature incineration to generate steam or heat conducting oil, and the steam or the heat conducting oil is respectively recycled and supplied to the biological fuel oil preparation unit for.
In the biofuel prepared from the illegal cooking oil by the treatment method, the prepared biofuel has an acid value of less than 1.5mgKOH/g and water impurity of less than 1%.
In the synergistic incineration of the treatment method, the waste heat of the flue gas generated by high-temperature incineration is recovered to generate 0.6-1.0 MPa steam or 220-240 ℃ heat conduction oil;
the flue gas after waste heat recovery is subjected to multistage purification treatment as follows: two-stage dust removal, dry/semi-dry deacidification, activated carbon adsorption and wet washing process treatment.
In the above method, the sludge and waste oil co-incineration disposal system is shown in fig. 2, and comprises:
the system comprises a sludge drying unit, a biofuel oil preparation unit and a collaborative incineration unit; wherein the content of the first and second substances,
the collaborative incineration unit is respectively provided with a dried sludge inlet, a biofuel oil inlet, a sludge waste heat recycling pipeline and a fuel oil waste heat recycling pipeline;
the sludge drying unit is provided with a sludge inlet, a dried sludge outlet and a waste heat inlet, the dried sludge outlet is connected with the dried sludge inlet of the collaborative incineration unit, and the waste heat inlet is connected with the sludge waste heat recycling pipeline;
the biofuel preparation unit is provided with a trench oil inlet, an biofuel outlet and a waste heat access port, the biofuel outlet is connected with the biofuel inlet of the collaborative incineration unit, and the waste heat access port is connected with a fuel waste heat recycling pipeline.
In the above system, the biofuel preparation unit comprises:
a dehydration and impurity removal pretreatment device, a neutralization and deacidification device, a standing device and an oil-water separation device; wherein the content of the first and second substances,
the dewatering and impurity removing pretreatment device is provided with a swill-cooked dirty oil inlet and a swill-cooked dirty oil outlet, and the swill-cooked dirty oil outlet is sequentially connected with the neutralization deacidification device, the standing device and the oil-water separation device;
the dehydration and impurity removal pretreatment device and the standing device are respectively provided with the waste heat access ports;
the oil-water separation device is provided with a wastewater outlet and the biofuel oil outlet.
In the above system, the biofuel preparation unit further comprises:
the solid-liquid separation device is provided with a mixed liquid inlet, a waste liquid outlet and a waste residue outlet respectively, the mixed liquid inlet is connected with the lower mixed liquid outlet of the standing device, and the waste liquid outlet is connected with the inlet end of the standing device. The solid-liquid separation device is provided with a waste residue outlet, separated waste residue can be discharged, and the waste residue obtained after deacidification reaction and standing separation in the biofuel production process contains a large amount of saponin, can be used as a raw material for producing detergent, soap and other surfactant products, and has economic value.
In the system, the neutralization deacidification device adopts an intermittent neutralization deacidification reactor provided with an alkali adding port.
In the system, the bio-fuel oil outlet of the oil-water separation device is also connected with the petrochemical diesel oil inlet. Preferably, the biofuel oil outlet of the oil-water separation device can inject the biofuel oil into the collaborative incineration unit according to a set pressure through the injection device and the biofuel oil inlet of the collaborative incineration unit.
In the above system, the collaborative incineration unit includes:
the system comprises a fluidized bed incinerator, a waste heat recycling device and a flue gas purification device; wherein the content of the first and second substances,
the fluidized bed incinerator is respectively provided with a dried sludge inlet, a biofuel oil inlet and a flue gas outlet, and the flue gas outlet is sequentially connected with the waste heat recycling device and the flue gas purifying device;
and the waste heat recycling device is respectively provided with a sludge waste heat recycling pipeline and a fuel oil waste heat recycling pipeline.
In the above-mentioned system, the flue gas purification device includes: the device comprises a primary dust remover, a deacidification device, activated carbon injection, secondary dust removal and a wet scrubber which are arranged in sequence.
The embodiments of the present invention are described in further detail below.
The sludge and swill-cooked dirty oil collaborative incineration disposal method provided by the embodiment of the invention is used for collaborative incineration disposal of sludge and swill-cooked dirty oil, wet sludge raw materials with higher water content can be dehydrated and dried to obtain dried sludge, the heat value is improved, the dried sludge is fed into a fluidized bed incinerator for combustion treatment, the swill-cooked dirty oil is subjected to dehydration and impurity removal pretreatment, deacidification, separation and other steps to prepare bio-fuel oil, the bio-fuel oil or the bio-fuel oil and petrochemical diesel oil are mixed to be used as a combustion improver to be sprayed into the fluidized bed incinerator for collaborative incineration disposal with the dried sludge, the incineration flue gas enters flue gas purification equipment after waste heat recovery, pollutants such as acid gas, dust, heavy metals and the like in the flue gas are purified.
The system used by the sludge and illegal cooking oil collaborative incineration disposal method is divided into three units, namely a sludge drying unit, a biofuel oil preparation unit and a collaborative incineration unit; the sludge drying unit produces dried sludge by taking wet sludge as a raw material, the biofuel oil preparation unit produces biofuel oil by taking illegal cooking oil as a raw material, the dried sludge and the biofuel oil in the collaborative incineration unit are incinerated cooperatively, and the flue gas is purified and then discharged up to the standard.
(1) A sludge drying unit: the unit is a conventional technology, an indirect heat drying process or a direct drying process can be selected, and the unit is conventional equipment, and a heat source is steam or heat conducting oil generated by waste heat recovery of the collaborative incineration unit. In the sludge drying unit, the raw material is sludge with a water content of not more than 85%, in the embodiment, sludge with a water content of not more than 80% is used as the raw material, the sludge is conveyed to a sludge drying machine (in the embodiment, a steam indirect heat drying machine is adopted) for dehydration from a sludge receiving bin under the action of a screw pump or a screw conveyer, in the steam indirect heat drying machine, the sludge and steam with the pressure of 0.6MPa and the temperature of 160 ℃ generated by waste heat recovery from a fluidized bed incinerator generate heat exchange, the sludge is heated to 90 ℃, moisture in the sludge is evaporated and is taken out of the drying machine by circulating air, the moisture-carrying air is recycled after condensation and drainage, the steam flow is adjusted, and the water content of dried sludge at an outlet of the drying. And returning the steam condensate cooled by the drier to the waste heat recovery system of the fluidized bed incinerator, and recycling the steam condensate after repeated heating.
(2) The biofuel oil preparation unit: the collected waste oil which generally contains 50-70% of water impurities is used as a raw material, and the processed bio-fuel oil is clear in appearance, the acid value is less than 1.5mgKOH/g, and the water impurities are less than 1%.
In the embodiment, the illegal cooking oil collected by water impurity total content of 60%, turbid appearance and acid value of 45mgKOH/g is used as a raw material, excessive water and solid impurities are removed through pretreatment, and the illegal cooking oil is filtered, heated and centrifugally separated, so that the water impurity total content of the preprocessed illegal cooking oil is 5%. The pretreated illegal cooking oil is sent into an intermittent neutralization and deacidification reactor, a NaOH solution with the mass fraction of 25% is added into the reactor under the stirring state, the flow rate of alkali liquor entering the reactor is strictly controlled, the equipment is provided with a circulating cooling water cooling facility to ensure the temperature stability of a system, the temperature fluctuation is not more than 5 ℃, a small amount of saponin can be generated by side reaction, a large amount of macromolecular substances such as colloid and the like can be adsorbed in the forming process of the saponin, and the turbidity, the viscosity and the like of the illegal cooking oil can be obviously reduced. Standing for separation, performing solid-liquid separation on the lower layer mixed liquor through a filter press, recovering more oil contained in the waste liquor, and further passing the upper layer oil through an oil-water cyclone separator to obtain the biofuel oil with clear appearance, acid value of 1.3mgKOH/g and water impurity of 0.9%.
(3) A collaborative incineration unit: dried sludge from the sludge drying unit enters a fluidized bed incinerator, sludge particles collide, are dried, are heated and are combusted under the action of high-temperature bed materials and fluidized air in the fluidized bed incinerator, in order to ensure that the temperature in the fluidized bed incinerator is not less than 850 ℃, bio-fuel oil or the blend fuel of the bio-fuel oil and petrochemical diesel oil is in a hot standby linkage state, and when the temperature is reduced, the bio-fuel oil or the blend fuel of the bio-fuel oil and the petrochemical diesel oil is automatically sprayed into the fluidized bed incinerator as a combustion improver, so that the temperature of a hearth is rapidly increased. High-temperature flue gas with the temperature of above 850 ℃ generated by incineration generates 0.6-1.0 MPa steam or 220-240 ℃ heat conduction oil through a waste heat recovery system, and the recovered heat is supplied to a biofuel oil preparation unit and a sludge drying unit. In addition, the high-temperature flue gas is simultaneously used for preheating fluidized air of the fluidized bed incinerator so as to improve the combustion efficiency of the incinerator. The flue gas temperature after waste heat recovery is 180-.
The disposal method can utilize the waste heat of the collaborative incineration in the process of preparing the bio-fuel oil from the illegal cooking oil as the combustion improver for the incineration of the dried sludge, thereby realizing the purpose of treating wastes with processes of wastes against one another, saving energy and effectively reducing the operation cost.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The sludge and illegal cooking oil collaborative incineration disposal method is characterized in that a sludge and illegal cooking oil collaborative incineration disposal system is adopted, and the sludge and illegal cooking oil collaborative incineration disposal system comprises: the system comprises a sludge drying unit, a biofuel oil preparation unit and a collaborative incineration unit; wherein the collaborative incineration unit comprises: the system comprises a fluidized bed incinerator, a waste heat recycling device and a flue gas purification device; the fluidized bed incinerator is provided with a dried sludge inlet, a biofuel oil inlet and a flue gas outlet respectively, and the flue gas outlet is connected with the waste heat recycling device and the flue gas purifying device in sequence; the waste heat recycling device is respectively provided with a sludge waste heat recycling pipeline and a fuel oil waste heat recycling pipeline; the sludge drying unit is provided with a sludge inlet, a dried sludge outlet and a waste heat inlet, the dried sludge outlet is connected with the dried sludge inlet of the collaborative incineration unit, and the waste heat inlet is connected with the sludge waste heat recycling pipeline; the biofuel oil preparation unit is provided with a waste oil inlet, an biofuel oil outlet and a waste heat access port, the biofuel oil outlet is connected with the biofuel oil inlet of the collaborative incineration unit, and the waste heat access port is connected with a fuel oil waste heat recycling pipeline;
in the system, the biofuel preparation unit comprises: a dehydration and impurity removal pretreatment device, a neutralization and deacidification device, a standing device and an oil-water separation device; the device comprises a dewatering and impurity-removing pretreatment device, a waste oil inlet, a waste oil outlet, a neutralizing and deacidifying device, a standing device and an oil-water separation device, wherein the dewatering and impurity-removing pretreatment device is provided with the waste oil inlet and the waste oil outlet which are sequentially connected; the dehydration and impurity removal pretreatment device and the standing device are respectively provided with the waste heat access ports; the oil-water separation device is provided with a wastewater outlet and the biofuel oil outlet; the biofuel oil outlet is connected with the biofuel oil inlet of the collaborative incineration unit through an injection device, and the biofuel oil is injected into the collaborative incineration unit according to a set pressure;
the sludge and swill-cooked dirty oil collaborative incineration disposal method comprises the following steps:
step 1, respectively carrying out sludge drying treatment and illegal cooking oil preparation of bio-fuel oil, wherein,
sludge drying treatment: sludge with the water content not more than 85 percent is taken as a raw material and conveyed into a sludge drying unit of the system for sludge drying treatment, the heat used for drying the sludge is provided by a sludge waste heat recycling pipeline of the collaborative incineration unit, and the dried sludge is conveyed into the collaborative incineration unit for incineration;
preparing bio-fuel oil from illegal cooking oil: the method comprises the steps of taking waste oil containing 50-70% of water impurities as a raw material, conveying the waste oil into a bio-fuel oil preparation unit of the system, performing dehydration and impurity removal pretreatment to obtain the waste oil with the water impurity content not more than 5%, conveying the waste oil into an intermittent neutralization and deacidification reactor to perform intermittent neutralization deacidification reaction treatment, performing standing separation treatment after treatment, performing oil-water separation treatment on an upper oil product after the standing separation to obtain the bio-fuel oil with the acid value less than 1.5mgKOH/g and the water impurity content less than 1%, and conveying the bio-fuel oil into a synergistic incineration unit to serve as a combustion improver for incinerating dried sludge; the heat used for the dehydration and impurity removal pretreatment and the standing separation treatment is the heat provided by the collaborative incineration unit through a fuel oil waste heat recycling pipeline;
and 2, collaborative incineration: the system comprises a sludge drying unit, a biological fuel oil preparation unit, a heat conducting oil recovery unit, a sludge drying unit, a heat conducting oil recovery unit, a heat recovery unit and a heat recovery unit, wherein the biological fuel oil preparation unit is used for preparing biological fuel oil, the biological fuel oil is used for preparing the biological fuel oil, the heat recovery unit is used for recovering waste heat generated by flue gas generated by high-temperature incineration to generate steam or heat conducting oil, and the steam or the heat conducting oil is respectively recycled and supplied to the biological fuel oil preparation unit for.
2. The sludge and waste oil co-incineration disposal method as claimed in claim 1, wherein in the bio-fuel oil prepared from the waste oil of the method, the prepared bio-fuel oil has an acid value of less than 1.3mgKOH/g and water impurity of less than 0.9%.
3. The sludge and illegal cooking oil collaborative incineration disposal method according to claim 1, wherein in collaborative incineration of the method, waste heat of flue gas generated by high-temperature incineration is recovered to generate 0.6-1.0 MPa steam or 220-240 ℃ heat conduction oil.
4. The sludge and waste oil co-incineration disposal method according to claim 1, wherein in the system, the bio-fuel oil preparation unit further comprises:
the solid-liquid separation device is provided with a mixed liquid inlet, a waste liquid outlet and a waste residue outlet respectively, the mixed liquid inlet is connected with the lower mixed liquid outlet of the standing device, and the waste liquid outlet is connected with the inlet end of the standing device.
5. The sludge and waste oil co-incineration disposal method as claimed in claim 1 or 4, wherein the neutralization deacidification apparatus employs an intermittent neutralization deacidification reactor provided with an alkali adding port.
6. The sludge and waste oil co-incineration disposal method as claimed in claim 1 or 4, wherein a petrochemical diesel oil inlet is further connected to the bio-fuel oil outlet of the oil-water separation device.
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| CN1800062A (en) * | 2005-12-14 | 2006-07-12 | 上海金州环境工程有限公司 | Sludge anhydration and burning process, and its systematic device |
| CN202400939U (en) * | 2011-12-31 | 2012-08-29 | 广州茵绿环境科技发展有限公司 | Sludge drying device using mixture of waste grease and dry sludge powder as fuel |
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| CN2892863Y (en) * | 2005-10-12 | 2007-04-25 | 吴桐 | Restauant refuse waste oil processing system |
| US10016795B2 (en) * | 2012-12-13 | 2018-07-10 | Exxonmobil Research And Engineering Company | Remediation of contaminated particulate materials |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1800062A (en) * | 2005-12-14 | 2006-07-12 | 上海金州环境工程有限公司 | Sludge anhydration and burning process, and its systematic device |
| CN202400939U (en) * | 2011-12-31 | 2012-08-29 | 广州茵绿环境科技发展有限公司 | Sludge drying device using mixture of waste grease and dry sludge powder as fuel |
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