CN103193372B - Energy recovery device of sludge thermal hydrolysis pretreatment system - Google Patents
Energy recovery device of sludge thermal hydrolysis pretreatment system Download PDFInfo
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- CN103193372B CN103193372B CN201310115352.7A CN201310115352A CN103193372B CN 103193372 B CN103193372 B CN 103193372B CN 201310115352 A CN201310115352 A CN 201310115352A CN 103193372 B CN103193372 B CN 103193372B
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- pretreatment system
- water sealing
- recycle device
- sealing liquid
- energy recycle
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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
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
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Abstract
The invention relates to an energy recovery device of a sludge thermal hydrolysis pretreatment system. The energy recovery device comprises an energy recovery device main body, a plurality of heat source pipelines and a water seal liquid control system, wherein the main energy recovery device body is used as an energy recovery container and internally filled with water seal liquid; the heat source pipelines are communicated with the main energy recovery device body and a steam generating part of the sludge thermal hydrolysis pretreatment system, parts of the heat source pipelines are located in the main energy recovery device body, a plurality of holes are formed in the parts of the heat source pipelines, located in the main energy recovery device body, and the holes are located under the water seal liquid and used for transferring heat energy in steam to the water seal liquid; the water seal liquid control system comprises a water supplement pipeline, a water delivery pipeline and a water seal liquid level control assembly, wherein one end of the water supplement pipeline and one end of the water delivery pipeline are respectively connected with the main energy recovery device body and are respectively used for supplementing the water seal liquid and discharging and utilizing the water seal liquid in which the heat energy is absorbed; and the water seal liquid level control assembly is arranged on the main energy recovery device body and used for controlling the water seal liquid at a preset liquid level.
Description
Technical field
The present invention relates to sewage treatment area, particularly a kind of energy recycle device of sludge hot hydrolysis pretreatment system.
Background technology
Along with growth in the living standard, people also all the more pay attention to environmental protection, energy-conservation theory.City domestic sewage discharge has at present been the primary pollution source of municipal water; city domestic sewage processing is the most important thing of urban water conservation at present and in the future and treatment work; this just requires us will be using processing the construction of sanitary sewage facility as the important content of urban infrastructure, and is too impatient to wait thing.
After sewage disposal, tend to produce a large amount of mud, through the mud (water ratio is 80% and following) of existing sludge hot hydrolysis treatment system processing, it in order to improve thermal hydrolysis efficiency, to reduce the treatment time, need to carry out pre-treatment before entering thermal hydrolysis system.Pretreated step is as follows: first utilize overbottom pressure, the waste heat of thermal hydrolysis, give the mud preheating of high mass dryness fraction; Secondly,, in order to improve the heat transfer efficiency of sludge hot hydrolysis system, mud is carried out to desaturation, pulp processing, but, in this process, still have the heat energy of part to overflow with the form of steam, and in treating processes, also can produce volatility peculiar smell, affect ambient air quality.
Summary of the invention
The present invention is directed to prior art above shortcomings, a kind of energy recycle device of sludge hot hydrolysis pretreatment system is provided, dilute mud by the heat that absorbs effusion steam and residue vapor (secondary steam) with water sealing liquid, effectively reduce energy consumption, saved cost.
The present invention is achieved through the following technical solutions:
An energy recycle device for sludge hot hydrolysis pretreatment system, sludge hot hydrolysis pretreatment system comprises thermal hydrolysis tank, pretreatment system and storage mud tank, energy recycle device comprises:
Energy recycle device main body, as the container of recovered energy, water sealing liquid is equipped with in inside;
Some thermal source pipelines, be communicated with the steam generating unit of energy recycle device main body and sludge hot hydrolysis pretreatment system, and a part for thermal source pipeline is positioned at energy recycle device main body, the thermal source pipe section that is positioned at energy recycle device main body is provided with some holes, hole is positioned under water sealing liquid, by the transfer of heat energy in steam in water sealing liquid;
Water sealing liquid Controlling System, comprise: condensate make-up piping, conveying waterpipe and water sealing liquid liquid level control unit, wherein, one end of condensate make-up piping is connected respectively energy recycle device main body with the one end of carrying waterpipe, discharges and utilizes respectively in order to make up water sealing liquid and by the water sealing liquid that absorbs heat energy; Water sealing liquid liquid level control unit is arranged in energy recycle device main body, in order to control water sealing liquid in a default liquid level.
Preferably, water sealing liquid liquid level control unit comprises operated pneumatic valve and float(ing)valve, and operated pneumatic valve is arranged on condensate make-up piping, and float(ing)valve is arranged in energy recycle device main body, and operated pneumatic valve is connected with float(ing)valve, in order to control the flooding quantity of condensate make-up piping.
Preferably, water sealing liquid liquid level control unit comprises variable valve, is arranged on and carries on waterpipe, and the storage mud of carrying the other end of waterpipe to be connected to a sludge hot hydrolysis pretreatment system is filled with, variable valve fill with according to storage mud in mud enter mud amount control Dilution ratio.
Preferably, some thermal source pipelines comprise:
The first thermal source pipeline, one end of the first thermal source pipeline connects the pretreatment system of sludge hot hydrolysis pretreatment system, in order to reclaim the effusion steam of pretreatment system;
Secondary Heat Source pipeline, one end of Secondary Heat Source pipeline connects the thermal hydrolysis tank of sludge hot hydrolysis pretreatment system, in order to reclaim the residue vapor of thermal hydrolysis tank.
Preferably, also comprise gas with foreign flavor recovery tube, be communicated with in the upper end of energy recycle device main body, in order to recycle gas with foreign flavor.
Preferably, the minimum liquid level of water sealing liquid is more than or equal to 200 millimeters, and the highest liquid level of water sealing liquid is more than or equal to 600 millimeters.
Preferably, water sealing liquid liquid level control unit comprises a upflow tube, is communicated with the highest liquid level place at water sealing liquid.
Preferably, upflow tube is a water seal upflow tube, and the water seal height of water seal upflow tube is greater than the minimum liquid level of water sealing liquid.
Brief description of the drawings
Fig. 1 is the structural representation of the energy recycle device of a kind of sludge hot hydrolysis of the present invention pretreatment system;
Fig. 2 is the structural representation of the energy recycle device of application sludge hot hydrolysis of the present invention pretreatment system.
Embodiment
Below in conjunction with embodiment, the present invention is elaborated, the present embodiment is implemented under taking technical solution of the present invention as prerequisite, has provided detailed embodiment, but protection scope of the present invention is not limited to following embodiment.
Please refer to Fig. 1, the energy recycle device of a kind of sludge hot hydrolysis pretreatment system provided by the invention, comprising: energy recycle device main body 1, and as the container of recovered energy, water sealing liquid is equipped with in inside; Some thermal source pipelines, for example the first thermal source pipeline 71 and Secondary Heat Source pipeline 72, be communicated with the steam generating unit of energy recycle device main body 1 and sludge hot hydrolysis pretreatment system, be positioned on the thermal source pipeline of energy recycle device main body 1 inside and be provided with some holes 73, hole 73 is positioned under water sealing liquid, by hole 73 by the transfer of heat energy in steam in water sealing liquid; Water sealing liquid Controlling System, comprising: condensate make-up piping 2, carry waterpipe 4, be communicated with in energy recycle device main body 1, respectively in order to make up water sealing liquid and will absorb the water sealing liquid of heat energy discharge and utilize; Water sealing liquid liquid level control unit, is arranged in energy recycle device main body, in order to control water sealing liquid in a default liquid level scope.The water yield/change of level in order to ensure water sealing liquid in energy recycle device operational process does not affect heat absorption efficiency, be provided with water sealing liquid minimum liquid level h1, water sealing liquid the highest liquid level h3 and minimum liquid level h1 and the highest liquid level h3 between normal liquid level h2, wherein, minimum liquid level h1 is more than or equal to 200 millimeters, water sealing liquid the highest liquid level h3 be more than or equal to 600 millimeters.The present invention does not limit at this, and technician can regulate minimum and the highest liquid level according to practical situation.Exceeding the water sealing liquid of high liquid level adopts upflow tube to derive.
Particularly, the outer end of the first thermal source pipeline 71 connects the pretreatment system of sludge hot hydrolysis pretreatment system, in order to reclaim the effusion steam of pretreatment system; The outer end of Secondary Heat Source pipeline 72 connects the thermal hydrolysis tank of sludge hot hydrolysis pretreatment system, in order to reclaim the residue vapor of thermal hydrolysis tank.
Water sealing liquid liquid level control unit adopts operated pneumatic valve 81 and float(ing)valve 6, operated pneumatic valve 81 is arranged on condensate make-up piping 2, and float(ing)valve 6 is arranged in energy recycle device main body 1, and operated pneumatic valve 81 is connected with float(ing)valve 6, form secondary control, in order to control the flooding quantity of condensate make-up piping.Also can adopt variable valve 82 simultaneously, be arranged on and carry on waterpipe 5, discharge water sealing liquid by pump 91, carry the outer end of waterpipe 5 to be connected to the storage mud filling of a sludge hot hydrolysis pretreatment system, variable valve 82 carries the water seal liquid measure that has absorbed heat to control Dilution ratio according to the mud quantitative change control of entering of mud in the filling of storage mud.Storage mud fill with in the mud quantitative changeization of entering of mud can be by entering on mud pipeline, under meter to be set and to obtain, the present invention does not limit at this.
In the steam producing due to sludge hot hydrolysis pretreatment system, be mingled with volatile gas with foreign flavor, therefore, also adopt in the present embodiment gas with foreign flavor recovery tube 3, be communicated with the upper end in energy recycle device main body 1, outer end connects gas processing device, in order to recycle gas with foreign flavor.Meanwhile, upflow tube is designed to a water seal upflow tube 4, and the water seal height of water seal upflow tube 4 is greater than the minimum liquid level h1 of water sealing liquid, prevents that gas with foreign flavor from overflowing from upflow tube.Under high liquid level, valve-off 83, opens pump 92 and derives unnecessary water sealing liquid, under low liquid level, opens valve 83, closes pump 92 make up water sealing liquids, makes the aqua seal section of water seal upflow tube 4 realize water seal.Through test, the water seal height of design water seal upflow tube 4 is greater than the minimum liquid level of water sealing liquid, reaches the object that prevents that volatility gas with foreign flavor from overflowing.This design is the preferred configuration of doing for the present embodiment, and the present invention is not as limit, and technician can change design according to the actual requirements.
Understand the present invention for the ease of technician, a present invention is below provided the application in sludge hot hydrolysis pretreatment system.Please refer to Fig. 2, common, sludge hot hydrolysis pretreatment system comprises: boiler house, thermal hydrolysis tank, pretreatment system, storage mud tank, and structure and the principle of sludge hot hydrolysis pretreatment system are the common practise of this area, the present invention does not elaborate to it at this.Storage mud tank enters mud in pretreatment system, and pretreatment system heats and pulp mud, and pretreated mud is sent into thermal hydrolysis tank, and the steam providing by boiler house carries out thermal hydrolysis.In this process, in thermal hydrolysis tank, pretreatment system, have unnecessary steam residual or overflow.Energy recycle device i.e. dotted line frame part in figure, of the present inventionly by being connected to, the thermal source pipeline of energy recycle device 71,72 on thermal hydrolysis tank, reclaims residue vapor (secondary steam), and be connected to and on pretreatment system, reclaim effusion steam, thermal power transfer in steam is absorbed in the water sealing liquid of energy recycle device, finally water sealing liquid is imported and in storage mud tank, heat in advance and dilute mud, improve the water conservancy condition of carrying mud, the power consumption of having saved sludge hot hydrolysis pretreatment system, reduces processing cost.
For foregoing, technician can storage mud tank enter on mud pipeline to arrange into mud under meter, by entering the derived quantity of combination control water sealing liquid of mud under meter and variable valve 82, to control Dilution ratio.
Disclosed is above only the application's preferred embodiment, but the application is not limited thereto, and the changes that any person skilled in the art can think of, all should drop in the application's protection domain.
Claims (8)
1. an energy recycle device for sludge hot hydrolysis pretreatment system, described sludge hot hydrolysis pretreatment system comprises thermal hydrolysis tank, pretreatment system and storage mud tank, it is characterized in that, described energy recycle device comprises:
Energy recycle device main body, as the container of recovered energy, water sealing liquid is equipped with in inside;
Some thermal source pipelines, be communicated with the steam generating unit of described energy recycle device main body and described sludge hot hydrolysis pretreatment system, and a part for described thermal source pipeline is positioned at described energy recycle device main body, the described thermal source pipe section that is positioned at described energy recycle device main body is provided with some holes, described hole is positioned under described water sealing liquid, by the transfer of heat energy in steam in described water sealing liquid;
Water sealing liquid Controlling System, comprise: condensate make-up piping, conveying waterpipe and water sealing liquid liquid level control unit, wherein, one end of described condensate make-up piping is connected respectively described energy recycle device main body with one end of described conveying waterpipe, respectively in order to supplement described water sealing liquid and the water sealing liquid that absorbs heat energy is discharged and utilized; Described water sealing liquid liquid level control unit is arranged in described energy recycle device main body, in order to control described water sealing liquid in a default liquid level;
Wherein, the other end of described conveying waterpipe connects described storage mud tank, in order to the described water sealing liquid that has absorbed the heat energy in steam is imported to described storage mud tank, the mud in described storage mud tank is heated in advance and is diluted.
2. the energy recycle device of sludge hot hydrolysis pretreatment system as claimed in claim 1, it is characterized in that, described water sealing liquid liquid level control unit comprises operated pneumatic valve and float(ing)valve, described operated pneumatic valve is arranged on described condensate make-up piping, described float(ing)valve is arranged in described energy recycle device main body, described operated pneumatic valve is connected with described float(ing)valve, in order to control the flooding quantity of described condensate make-up piping.
3. the energy recycle device of sludge hot hydrolysis pretreatment system as claimed in claim 1 or 2, it is characterized in that, described water sealing liquid liquid level control unit comprises variable valve, be arranged on described conveying waterpipe, described variable valve fill with according to described storage mud in mud enter mud amount control Dilution ratio.
4. the energy recycle device of sludge hot hydrolysis pretreatment system as claimed in claim 1, is characterized in that, described some thermal source pipelines comprise:
The first thermal source pipeline, one end of described the first thermal source pipeline connects the described pretreatment system of described sludge hot hydrolysis pretreatment system, in order to reclaim the effusion steam of described pretreatment system;
Secondary Heat Source pipeline, one end of described Secondary Heat Source pipeline connects the described thermal hydrolysis tank of described sludge hot hydrolysis pretreatment system, in order to reclaim the residue vapor of described thermal hydrolysis tank.
5. the energy recycle device of sludge hot hydrolysis pretreatment system as claimed in claim 1, is characterized in that, also comprises gas with foreign flavor recovery tube, is communicated with in the upper end of described energy recycle device main body, in order to recycle gas with foreign flavor.
6. the energy recycle device of sludge hot hydrolysis pretreatment system as claimed in claim 1, is characterized in that, the minimum liquid level of described water sealing liquid is more than or equal to 200 millimeters, and the highest liquid level of described water sealing liquid is more than or equal to 600 millimeters.
7. the energy recycle device of sludge hot hydrolysis pretreatment system as claimed in claim 6, is characterized in that, described water sealing liquid liquid level control unit comprises a upflow tube, is communicated with the highest liquid level place at described water sealing liquid.
8. the energy recycle device of sludge hot hydrolysis pretreatment system as claimed in claim 7, is characterized in that, described upflow tube is a water seal upflow tube, and the water seal height of described water seal upflow tube is greater than the minimum liquid level of described water sealing liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310115352.7A CN103193372B (en) | 2013-04-03 | 2013-04-03 | Energy recovery device of sludge thermal hydrolysis pretreatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310115352.7A CN103193372B (en) | 2013-04-03 | 2013-04-03 | Energy recovery device of sludge thermal hydrolysis pretreatment system |
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| Publication Number | Publication Date |
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| CN103193372A CN103193372A (en) | 2013-07-10 |
| CN103193372B true CN103193372B (en) | 2014-12-03 |
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| CN201310115352.7A Active CN103193372B (en) | 2013-04-03 | 2013-04-03 | Energy recovery device of sludge thermal hydrolysis pretreatment system |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1269747C (en) * | 2004-04-26 | 2006-08-16 | 清华大学 | Process for treating excess sludge |
| CN101793390B (en) * | 2010-02-08 | 2011-11-23 | 广东省特种设备检测院顺德分院 | Comprehensive recovery method and system of condensation water and dead steam |
| CN203187504U (en) * | 2013-04-03 | 2013-09-11 | 上海同济普兰德生物质能股份有限公司 | Energy recovery device of pre-treatment system for sludge pyrohydrolysis |
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