CN217418713U - Kitchen waste treatment and resource utilization system - Google Patents
Kitchen waste treatment and resource utilization system Download PDFInfo
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- CN217418713U CN217418713U CN202220702687.3U CN202220702687U CN217418713U CN 217418713 U CN217418713 U CN 217418713U CN 202220702687 U CN202220702687 U CN 202220702687U CN 217418713 U CN217418713 U CN 217418713U
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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
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Abstract
The utility model relates to a kitchen garbage handles and utilization system. The system comprises a horizontal type pyrohydrolysis system, a composite power pulping system, a sand and impurity removing system, a solid-liquid separation system and an anaerobic system, wherein a discharge port of the horizontal type pyrohydrolysis system is connected with the composite power pulping system, a slurry outlet of the composite power pulping system is connected with the sand and impurity removing system, a solid material outlet of the composite power pulping system is connected with the solid-liquid separation system, a liquid outlet of the solid-liquid separation system is connected with the sand and impurity removing system, and a slurry outlet of the sand and impurity removing system is connected with the anaerobic system. The utility model discloses the pulping quality is even, and pyrolysis production is continuous, can realize automated production, and production efficiency is high, and the process is simple, and resource utilization is rateed highly.
Description
Technical Field
The utility model relates to a solid useless processing technology field, concretely relates to kitchen remains refuse treatment and utilization system.
Background
The kitchen waste is an important component of household waste and comprises food residues generated in the life of residents and fruit and vegetable waste from farmer markets. The water content of the kitchen waste is 74.94-87.07%, and the kitchen waste contains a large amount of organic matters such as saccharides, proteins and lipids, has good biochemical degradability, causes the defects of easy decay and deterioration of the kitchen waste, germ breeding and the like, and can seriously affect the physical health and environmental sanitation of residents without proper treatment. The proportion of kitchen waste in municipal domestic waste in China is 49.4% -64.5%, and the kitchen waste is properly treated and recycled, so that the quality of the living environment of residents is directly influenced, and the method has important significance for realizing carbon peak reaching and carbon neutralization.
At present, anaerobic digestion and aerobic composting are the most suitable resource treatment technologies for large-scale industrial application in China, and the pretreatment technology of kitchen waste is particularly critical in order to ensure the main biological reaction. The key process of the kitchen waste pretreatment technology in China is mechanical separation, an intermittent production mode is adopted, waste is separated according to the size and the shape, the screening efficiency of organic matters is low, the loss amount is large, and screened products still need to be further treated, so that the pretreatment process is long in flow, complex in process, high in equipment maintenance and repair frequency, the production stability of subsequent biological reaction is influenced, and the project investment and the operation cost of a treatment plant are increased. Therefore, it is necessary to develop a process and a system for treating and recycling garbage in full amount with simple process.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model aims at providing a rubbish from cooking handles and utilization system to when accomplishing the rubbish from cooking innoxious and minimizing, realize the novel combination processing of rubbish from cooking resourceization.
The utility model provides a kitchen remains refuse treatment and utilization system, the system includes horizontal pyrohydrolysis system, composite power slurrying system, degritting edulcoration system, solid-liquid separation system and anaerobic system, wherein, the discharge gate of horizontal pyrohydrolysis system is connected composite power slurrying system, composite power slurrying system's thick liquid exit linkage degritting edulcoration system, composite power slurrying system's solid material exit linkage solid-liquid separation system, solid-liquid separation system's liquid exit linkage degritting edulcoration system, degritting edulcoration system's thick liquid exit linkage anaerobic system.
According to the utility model discloses an embodiment, the system still includes three-phase piece-rate system, three-phase piece-rate system locates desanding edulcoration system with between the anaerobic system.
According to the utility model discloses an embodiment, the system still include respectively with marsh gas storage device, natural pond liquid filtration liquid processing apparatus, natural pond sediment incineration or compost processing apparatus that anaerobic system connects.
According to the utility model discloses an embodiment, horizontal pyrohydrolysis system includes:
a feed balancing section configured to receive the material and control the pressure therein to a desired value;
the feeding port of the thermal hydrolysis tank is in on-off controllable connection with the feeding balance section, and the discharging port of the thermal hydrolysis tank is in on-off controllable connection with the discharging balance section and is configured to perform constant-pressure thermal decomposition;
and the discharging balance joint is configured to receive the material pyrolyzed in the thermal hydrolysis tank and control the pressure in the thermal hydrolysis tank to be a required value.
According to the utility model discloses an embodiment, horizontal pyrohydrolysis system still includes the balance tank, the balance tank includes two air inlets, these two air inlets respectively with the balanced festival of feeding with the balanced festival of ejection of compact is disconnected controllable and is connected.
According to the utility model discloses an embodiment, the balance tank is configured to for steel pressure vessel, and this balance tank sets up the pressure release mouth, with the interior pressure of tank rose behind balanced festival of feeding, the balanced festival intercommunication of ejection of compact, pass through before the next intercommunication pressure release mouth pressure release to ordinary pressure.
According to the utility model discloses an embodiment, the balanced festival of feeding is connected through first ooff valve the feed inlet of pyrohydrolysis jar.
According to the utility model discloses an embodiment, the balanced festival of feeding through first stop valve with the pyrohydrolysis jar is connected, first stop valve is configured to can adjust the pressure that is connected both sides for equal.
According to the utility model discloses an embodiment, the balanced festival of ejection of compact is connected through the second ooff valve the discharge gate of pyrohydrolysis jar.
According to the utility model discloses an embodiment, the balanced festival of ejection of compact through the second stop valve with the pyrohydrolysis jar is connected, the second stop valve is configured to can adjust the pressure that is connected both sides for equal.
The utility model discloses the pulping quality is even, and pyrolysis production is continuous, can realize automated production, and production efficiency is high, and the process is simple, and resource utilization is rateed highly.
Drawings
FIG. 1 is a flow chart of a process for treating and recycling kitchen garbage in full quantity according to an embodiment of the present invention;
FIG. 2 is a system diagram of a kitchen garbage full-scale treatment and recycling apparatus according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a pyrohydrolysis system according to an embodiment of the present invention;
utility model reference numeral:
A. the system comprises a horizontal type pyrohydrolysis system, a composite power pulping system, a sand and impurity removing system, a three-phase separation system, a solid-liquid separation system, an anaerobic system and a combined power pulping system, wherein the horizontal type pyrohydrolysis system comprises a horizontal type pyrohydrolysis system, a combined power pulping system, a horizontal type pyrohydrolysis system, a combined power system, a three-phase separation system, a pyrohydrolysis system, a horizontal type pyrohydrolysis system, a combined power system, a horizontal type pyrohydrolysis system, a combined power system, a horizontal type pyrohydrolysis system, a combined power system, a combined system, a pyrohydrolysis system, a combined power system, a pyrohydrolysis system, a three-separation system, a pyrohydrolysis system, a three-separation system, a pyrohydrolysis system, a three-separation system, a pyrohydrolysis system, a three-separation system, a system;
1. feeding conveyor, 2, third motorised valve, 3, fourth motorised valve, 4, balance tank, 5, first motorised valve, 6, feeding storage festival, 7, feeding balance festival, 8, feeding storage festival ooff valve, 9, first ooff valve, 10, second motorised valve, 11, pyrohydrolysis jar, 12, steam inlet, 13, ejection of compact balance festival, 14, second ooff valve, 15, ejection of compact storage festival, 16, ejection of compact storage festival ooff valve, 17, the ejection of compact conveyer.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solution of the invention.
The utility model aims at providing a kitchen garbage full-scale treatment and recycling process and system. The process system is a novel combined treatment method for realizing the recycling of kitchen garbage while finishing the harmlessness and reduction of the kitchen garbage,
pulping is realized by the mechanical action of the rotor and the hydraulic shearing action driven by the rotation of the rotor. The rotor rotates at a high speed to shred the kitchen waste, meanwhile, the kinetic energy is transferred to the kitchen waste, the pulping effect is enhanced through the high-strength turbulence and the shearing action of the water power, the pulping quality is uniform, the pyrolysis production is continuous, the automatic production can be realized, and the resource utilization rate is high.
The utility model discloses at first put forward kitchen garbage treatment and resource utilization method, the method mainly includes:
thermally hydrolyzing the kitchen garbage at high temperature in a horizontal continuous thermal hydrolysis system;
crushing and separating the hydrolyzed clinker by a composite power pulping system, forming homogenized slurry by hydraulic shearing and mechanical stirring and mixing, and sending the separated solid materials into a solid-liquid separation system;
sending the homogenized slurry into a sand and impurity removing system for sand and impurity removal;
and feeding the slurry subjected to sand removal and impurity removal into an anaerobic digestion system to be treated to generate biogas, biogas slurry and biogas residues.
The whole process flow of the kitchen garbage disposal and resource utilization method of the utility model is shown in figure 1:
the kitchen waste does not need to be sorted and enters continuous thermal hydrolysis treatment, firstly, the harmless effect is quickly achieved by utilizing the high-temperature and high-pressure action of thermal hydrolysis, meanwhile, a plastic bag wrapping the kitchen waste is broken and shrunk, the garbage cells are quickly hydrolyzed and pulped, the pulp in the cells is dissolved out, organic matters are dissolved out into the pulp to the maximum extent, and the material after thermal hydrolysis is in a thick pulp shape; feeding the thermal hydrolysis discharge into composite power pulping and purification, further crushing solid matters in the pulp through hydraulic shearing and mechanical stirring, and fully dissolving organic matters in the pulp; removing inorganic solid-phase waste and part of non-degradable organic waste from the slurry through sand and impurity removal; the slurry is treated by three-phase separation and quality separation, the liquid phase is subjected to oil extraction and then enters anaerobic digestion to generate biogas for supplying power, and solid-phase residues are incinerated or buried after being subjected to solid-liquid separation and dehydration to reach relevant standards; the biogas slurry can be treated according to the following specific total leachate treatment process, and the generated biogas residues are dehydrated and then subjected to aerobic fermentation or incineration treatment.
Aiming at the process flow, a complete equipment system is designed as shown in fig. 2, and the system mainly comprises a horizontal pyrohydrolysis system A, a compound power pulping system B, a sand and impurity removing system C, a solid-liquid separation system E and an anaerobic system F, wherein a discharge port of the horizontal pyrohydrolysis system A is connected with the compound power pulping system B, a slurry outlet of the compound power pulping system B is connected with the sand and impurity removing system C, a solid material outlet of the compound power pulping system B is connected with the solid-liquid separation system E, a liquid outlet of the solid-liquid separation system E is connected with the sand and impurity removing system C, and a slurry outlet of the sand and impurity removing system C is connected with the anaerobic system F. And a three-phase separation system can be arranged as required and is arranged between the sand and impurity removing system and the anaerobic system. Preferably, the system further comprises a biogas storage device, a biogas slurry leachate treatment device, and a biogas residue incineration or composting treatment device which are respectively connected with the anaerobic system.
The specific operation of the above embodiment may include the following steps:
1) the kitchen waste enters a horizontal continuous thermal hydrolysis treatment device for hydrolysis, so that organic matters in the kitchen waste are broken and dissolved out, and microorganisms and worm eggs on the surface of the kitchen waste are killed;
2) feeding the horizontal thermal hydrolysis discharge material into a composite power pulping and separating device, crushing and separating the thermally hydrolyzed clinker, and mixing by hydraulic shearing and mechanical stirring to form homogenized slurry;
3) the homogenized slurry enters a sand and impurity removing device to remove impurities such as sand, glass, shells and the like;
4) the separated slurry of impurities such as solid residues of kitchen garbage, plastic products, glass products, metal and the like enters a solid-liquid separation system, and the filtrate after solid-liquid separation flows back to desanding and impurity removal;
5) the slurry after sand and impurity removal is subjected to three-phase separation, and an extracted oil product is used as biodiesel or chemical raw materials.
6) And (4) the slurry after oil extraction enters anaerobic digestion treatment.
7) The biogas generated after anaerobic digestion treatment is stored and can be used for generating electricity for self use or used as boiler fuel.
8) The biogas slurry generated after anaerobic digestion treatment enters leachate full treatment and is discharged after reaching the standard.
9) And (3) incinerating or composting biogas residues generated after anaerobic digestion treatment.
The steps are not all necessary and can be adjusted according to the situation.
Wherein the high-temperature hydrolysis temperature is 100-180 ℃, the pressure is 0.07-1.0MPa, the time is 10-60min, and the water addition amount is 0-40%.
The system can be used for pushing kitchen waste to mix and carry out hydrolysis reaction by mechanical power such as a screw conveying mechanism, the hydrolysis process is heated uniformly, the diameter of the screw is 0.5-1.5m, and the rotating speed is 0-10 r/min.
The horizontal type pyrohydrolysis system realizes continuous feeding and discharging by a screw, an annular material plug with higher compactness is formed in the screw, and the reverse spraying of steam and slurry is blocked by the annular material plug and a feed and discharge channel switch valve to carry out continuous pyrohydrolysis.
The hydrolyzed clinker is pulped under the mechanical action of the rotor and the hydraulic shearing action driven by the rotation of the rotor. The rotor rotates at a high speed to shred the kitchen waste, meanwhile, the kinetic energy is transferred to the kitchen waste, the pulping effect is enhanced through the high-strength turbulence and the shearing action of the water power, the pulping is completed, and the pulping quality is uniform.
The separated impurities such as solid residues of the kitchen waste, plastic products, glass products, metal and the like are sent out of the solid-liquid separation system through the residue discharge port for treatment, so that the water content can be reduced, and filter residues obtained by solid-liquid separation treatment are sent out for incineration or landfill.
The homogenized slurry after pulping is processed by a sand and impurity removing system through a pump, the impurities in the homogenized slurry and solid-liquid separation filtrate generated by composite power pulping are removed, damage to rear-end equipment and pipelines is avoided, and sand deposition in an anaerobic tank is prevented.
The biogas generated after anaerobic digestion treatment is stored and can be used for generating electricity for self use or used as boiler fuel. The generated biogas slurry enters a leachate treatment system for treatment and is discharged after reaching the standard. The generated biogas residues are burnt or composted.
The utility model has the advantages of as follows:
pulping is realized through the mechanical action of the rotor and the hydraulic shearing action driven by the rotation of the rotor in the composite power pulping system. The rotor rotates at a high speed to shred the kitchen waste, and simultaneously transmits kinetic energy to the kitchen waste, the pulping effect is enhanced through the high-strength turbulence and shearing action of water power to finish pulping, and the quality of the finished pulp is uniform;
continuous feeding and feeding are realized through horizontal continuous thermal hydrolysis, composite power pulping and separation, so that the continuous operation of the main anaerobic digestion process is ensured, the impact load is reduced, the operation difficulty of the treatment process is reduced, and the treatment efficiency is improved;
the automation degree is high, unattended operation can be realized on site, and the human resources are saved;
the kitchen waste is effectively stabilized, harmless and recycled, unstable organic substances form methane, water and the like, and secondary pollution is avoided; the biogas slurry and biogas residue treatment system is matched to reduce organic matters;
the biogas generated after anaerobic digestion can be reused as a clean energy plant;
the process adaptability is strong, and the requirements on the classification of the primary garbage are not high;
the system has small occupied area, low investment cost and easy implementation, management and popularization.
Example 1
Materials, reagents, or equipment used in the following examples can be obtained from commercial sources or the prior art without specific descriptions, and are not described herein again.
After the kitchen waste is subjected to pyrohydrolysis treatment, organic matters in the kitchen waste are subjected to wall breaking and dissolution, microorganisms and ova on the surface of the kitchen waste are killed, and the kitchen waste can be subjected to anaerobic fermentation and the like to realize recycling treatment of the kitchen waste while harmlessness and reduction of the kitchen waste are completed.
When kitchen waste incoming materials are mainly food residues generated in resident life or are mixed with part of kitchen waste for treatment, the content of grease in the waste components is high, and the kitchen waste incoming materials need to be treated by an oil extraction process, so that adverse effects on a subsequent anaerobic digestion and leachate treatment system are avoided. As shown in fig. 1, the process steps are as follows:
1) carrying out high-temperature thermal hydrolysis on the kitchen waste in a horizontal continuous thermal hydrolysis system to kill microorganisms and ova on the surface of the kitchen waste and destroy the tissue structure of partial substances in the waste;
2) the compound power pulping system crushes and separates the hydrolyzed clinker, homogenized slurry is formed by hydraulic shearing and mechanical stirring, and the separated impurities of solid residues of kitchen garbage, plastic products, glass products, metal and the like enter a solid-liquid separation system;
3) the homogenized slurry enters a sand and impurity removing system to remove impurities such as sand, glass, shells and the like;
4) the filtrate after solid-liquid separation flows back to the desanding and impurity removing system;
5) the slurry after sand and impurity removal enters a three-phase separation system to extract an oil product;
6) the slurry after oil extraction enters an anaerobic digestion system for treatment;
7) biogas generated after anaerobic digestion treatment is stored and can be used for generating power for self use or used as boiler fuel;
8) biogas slurry generated after anaerobic digestion treatment enters a leachate full-amount treatment system for treatment, and is discharged after reaching the standard;
9) and (3) incinerating or composting biogas residues generated after anaerobic digestion treatment.
Example 2
When the kitchen garbage incoming material is mainly farmer market fruit and vegetable garbage, the oil content in the garbage components is lower, the oil extraction process is not required to be added, and the process steps are as follows:
1) carrying out high-temperature thermal hydrolysis on the kitchen waste in a horizontal continuous thermal hydrolysis system to kill microorganisms and ova on the surface of the kitchen waste and destroy the tissue structure of partial substances in the waste;
2) the compound power pulping system crushes and separates the hydrolyzed clinker, homogenized slurry is formed by hydraulic shearing and mechanical stirring, and the separated impurities of solid residues of kitchen garbage, plastic products, glass products, metal and the like enter a solid-liquid separation system;
3) the homogenized slurry enters a sand and impurity removing system to remove impurities such as sand, glass, shells and the like;
4) the filtrate after solid-liquid separation flows back to the desanding and impurity removing system;
5) the slurry after sand and impurity removal enters an anaerobic digestion system for treatment;
6) the biogas generated after anaerobic digestion treatment is stored and can be used for generating electricity for self use or used as boiler fuel.
7) And (4) the biogas slurry generated after anaerobic digestion treatment enters a leachate treatment system for treatment, and is discharged after reaching the standard.
8) And (3) incinerating or composting biogas residues generated after anaerobic digestion treatment.
Example 3
Embodiment as shown in fig. 3, the continuous thermal hydrolysis system a for kitchen waste provided by this embodiment includes a feeding conveyor 1, a feeding and storing section 6, a feeding balance section 7, a horizontal thermal hydrolysis tank 11, a discharging balance section 13, a discharging and storing section 15, a discharging conveyor 17, and a balance tank 4.
A spiral conveying device is arranged inside the horizontal type thermal hydrolysis tank 11. The top of the horizontal thermal hydrolysis tank 11 is provided with a feed inlet and a communicating opening communicated with the feed storage section 6 and the feed balance section 7. The bottom of the horizontal thermal hydrolysis tank 11 is provided with a plurality of discharge ports and steam inlets 12. A conveying passage from the feeding conveyor 1 to a feeding hole of the horizontal type pyrohydrolysis tank 11 is provided with a feeding storage section 6 and a feeding balance section 7; a conveying channel from the discharging conveyor 17 to the discharging port of the horizontal type pyrohydrolysis tank 11 is provided with a discharging balance section 13 and a discharging storage section 15.
The feeding storage section 6, the feeding balance section 7, the discharging balance section 13 and the discharging storage section 15 are of steel round or rectangular cylinder structures, one end of each of the feeding storage section 6, the feeding balance section 7, the discharging balance section 13 and the discharging storage section 15 is open and provided with a connecting flange for connecting a switch valve, one end of each of the feeding storage section 6 and the discharging balance section 7 is provided with a switch valve, and the switching valve is arranged below the feeding storage section 6 and the discharging balance section 7; the discharging balance section 13 and the discharging storage section 15 are arranged at the lower part of the cylinder body, and the switch valve is arranged at the upper part.
2 communication ports at the top of the horizontal type thermal hydrolysis tank 11 are respectively connected with the feeding balance section 7 and the discharging balance section 13, and a first electric valve 5 and a second electric valve 10 are arranged on the connecting pipeline.
The top of balance tank 4 is equipped with 2 air inlets, and the air inlet is connected with balanced festival 7 of feeding and balanced festival 13 of ejection of compact respectively, is equipped with third motorised valve 2 and fourth motorised valve 3 on the connecting tube.
In the horizontal type thermal hydrolysis tank 11, a steam inlet 12 tangentially admits air along the bottom of the tank, and a plurality of air inlets are axially arranged along the tank, so that the steam is evenly introduced. In the horizontal type pyrohydrolysis tank 11, kitchen waste is conveyed from the feeding hole to the discharging hole by the screw in the tank, and the screw drives the kitchen waste to turn over in the process, so that the kitchen waste and steam are uniformly mixed, and the pyrohydrolysis reaction is more complete. In the horizontal type thermal hydrolysis tank 11, a pressure and temperature detection device is arranged at the top of the tank so as to monitor the working condition in the tank in real time.
The process of treating kitchen garbage by using the continuous pyrohydrolysis device comprises the following steps:
when the temperature and the pressure in the horizontal thermal hydrolysis tank 11 reach set values, the switch valve and the electric valve are all closed, and the feeding conveyor 1 waits for a feeding signal to be in an initial state; then starting the feeding conveyor 1, starting feeding, and continuously working the feeding conveyor 1 until the whole treatment line stops; the material is continuously received in the feeding and storage section 6; the feeding and storing section switch valve 8 is opened, the preset feeding amount is finished in the feeding balance section 7, and the feeding and storing section switch valve 8 is closed; the first electric valve 5 is opened, the feeding balance section 7 is communicated with the horizontal type pyrohydrolysis tank 11 to form 1 space, the feeding balance section 7 and the horizontal type pyrohydrolysis tank 11 have equal pressure, and the first electric valve 5 is closed; the first switch valve 9 is opened, the materials in the feeding balance joint 7 vertically fall into the horizontal type thermal hydrolysis tank 11, and the first switch valve 9 is closed; the third electric valve 2 is opened, the feeding balance joint 7 is communicated with the balance tank 4, and after the pressure in the feeding balance joint 7 is reduced to be lower than 70kPa, the third electric valve 2 is closed, and one feeding cycle is completed;
after pyrolysis, starting the discharging conveyor 17 to start discharging, and continuously working the discharging conveyor 17 until the whole treatment line is stopped; the second electric valve 10 is opened, and after the discharging balance joint 13 and the horizontal type pyrohydrolysis tank 11 are isobaric, the second electric valve 9 is closed; the second switch valve 14 is opened, the pyrolysis material enters the discharging balance section 13 from the pyrolysis tank 11, the preset feeding amount is finished in the discharging balance section 13, and the second switch valve 14 is closed; the fourth electric valve 3 is opened, and after the pressure in the discharging balance joint 13 is reduced to be lower than 70kPa, the fourth electric valve 3 is closed; the discharging and storing section switch valve 16 is opened, the material in the discharging balance section 13 enters the discharging and storing section 15, the preset feeding amount in the discharging and storing section 15 is finished, the discharging and storing section switch valve 16 is closed, and one discharging cycle is finished; the material can fall into the discharging conveyor 17 from the discharging storage node 15, and the discharging conveyor 17 can convey the material to the composite power pulping system B, and the subsequent processing procedures as in embodiment 1 or embodiment 2 are continued.
After the kitchen waste is subjected to thermal hydrolysis treatment, organic matters in the kitchen waste are subjected to wall breaking and dissolution, microorganisms and ova on the surface of the kitchen waste are killed, and after the pyrolysis, the kitchen waste can be subjected to subsequent anaerobic fermentation and the like to realize recycling treatment of the kitchen waste while harmlessness and reduction of the kitchen waste are completed.
It should be noted that, in the present specification, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Furthermore, in the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The foregoing embodiments are merely illustrative of the present invention, and various components and devices of the embodiments may be changed or eliminated as desired, not all components shown in the drawings are necessarily required, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present application shall not be limited to the embodiments described herein, and all equivalent changes and modifications made on the basis of the technical solutions of the present invention shall not be excluded from the scope of the present invention.
Claims (10)
1. The kitchen waste treatment and resource utilization system is characterized by comprising a horizontal type pyrohydrolysis system, a composite power pulping system, a sand and impurity removing system, a solid-liquid separation system and an anaerobic system, wherein a discharge port of the horizontal type pyrohydrolysis system is connected with the composite power pulping system, a slurry outlet of the composite power pulping system is connected with the sand and impurity removing system, a solid material outlet of the composite power pulping system is connected with the solid-liquid separation system, a liquid outlet of the solid-liquid separation system is connected with the sand and impurity removing system, and a slurry outlet of the sand and impurity removing system is connected with the anaerobic system.
2. The kitchen waste treatment and resource utilization system according to claim 1, further comprising a three-phase separation system, wherein the three-phase separation system is disposed between the sand and impurity removal system and the anaerobic system.
3. The kitchen waste treatment and resource utilization system according to claim 1 or 2, further comprising a biogas storage device, a biogas slurry leachate treatment device, a biogas residue incineration or composting treatment device respectively connected to the anaerobic system.
4. The kitchen waste treatment and resource utilization system according to claim 1 or 2, wherein the horizontal thermal hydrolysis system comprises:
a feed balancing section configured to receive the material and control the pressure therein to a desired value;
the feeding port of the thermal hydrolysis tank is in on-off controllable connection with the feeding balance section, and the discharging port of the thermal hydrolysis tank is in on-off controllable connection with the discharging balance section and is configured to perform constant-pressure thermal decomposition;
and the discharge balance joint is configured to receive the pyrolyzed material in the thermal hydrolysis tank and control the internal pressure of the thermal hydrolysis tank to be a required value.
5. The kitchen waste treatment and resource utilization system according to claim 4, wherein the horizontal thermal hydrolysis system further comprises a balance tank, the balance tank comprises two air inlets, and the two air inlets are respectively in on-off controllable connection with the feeding balance section and the discharging balance section.
6. The kitchen waste treatment and resource utilization system according to claim 5, wherein the balance tank is configured as a steel pressure container, and is provided with a pressure relief port, and the pressure in the balance tank is increased after the balance tank is communicated with the feeding balance section and the discharging balance section, and is relieved to normal pressure through the pressure relief port before the balance tank is communicated next time.
7. The kitchen waste treatment and resource utilization system according to claim 4, wherein the feeding balance section is connected to the feeding port of the thermal hydrolysis tank through a first switch valve.
8. The kitchen waste treatment and resource utilization system according to claim 7, wherein the feeding balance section is connected to the thermal hydrolysis tank through a first stop valve, the first stop valve being configured to adjust pressures on both sides of the connection to be equal.
9. The kitchen waste treatment and resource utilization system according to claim 4, wherein the discharge balance section is connected to a discharge port of the thermal hydrolysis tank through a second switch valve.
10. The kitchen waste treatment and resource utilization system according to claim 9, wherein the discharge balancing section is connected to the thermal hydrolysis tank via a second stop valve, the second stop valve being configured to adjust pressures on both sides of the connection to be equal.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114703234A (en) * | 2022-03-29 | 2022-07-05 | 北京洁绿环境科技股份有限公司 | Kitchen waste treatment and resource utilization method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114703234A (en) * | 2022-03-29 | 2022-07-05 | 北京洁绿环境科技股份有限公司 | Kitchen waste treatment and resource utilization method and system |
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