CN204689852U - Continuous flow sludge thermal hydrolysis treatment unit - Google Patents
Continuous flow sludge thermal hydrolysis treatment unit Download PDFInfo
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- CN204689852U CN204689852U CN201520347628.9U CN201520347628U CN204689852U CN 204689852 U CN204689852 U CN 204689852U CN 201520347628 U CN201520347628 U CN 201520347628U CN 204689852 U CN204689852 U CN 204689852U
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Abstract
The utility model discloses a kind of continuous flow sludge thermal hydrolysis treatment unit, it comprises preheating retort, middle pressure steam retort group and flash tank, preheating retort is for holding pending mud, the discharge port of middle pressure steam retort group is communicated with the opening for feed of described flash tank, the opening for feed of described preheating retort is connected with mixing tank, screw agitator and grid agitator is disposed with from bottom to top in preheating retort, the paddle agitator that grid agitator is arranged by two reverse symmetry forms, what be wherein positioned at below mixes the body of rod one and the body of rod two that device comprises oblique setting, one end of the body of rod one and the body of rod two is oblique to intersect on described stir shaft, the other end of the body of rod one and the body of rod two is provided with erect mast down.The utility model is by mixing tank and preheating retort to the conditioning of mud, and the viscosity of mud reduces about 30%, and mobility is improved, thus better mixes with steam in middle pressure steam retort, reacts more abundant.
Description
Technical field
The utility model relates to technical field of sludge treatment, is specifically related to a kind of continuous flow sludge thermal hydrolysis treatment unit.
Background technology
The hydrolysis stage of anaerobic digestion is complicated non-solubility polymer conversion is simply dissolving monomer and dimeric process, for the anaerobic digestion of the high solid waste of solid content, biological hydrolysis is the rate-limiting step of whole process, so anaerobic digestion generally needs the longer residence time and larger digester, for mud, mud is mainly made up of microorganism, the matrix of carrying out needed for anaerobic digestion is included in cytolemma, therefore only break cell walls (film) these organic matters are discharged, anaerobic digestion could utilize this part organic, and the process of broken wall completes at hydrolysis stage, the speed of broken wall directly governs efficiency and the effect of anaerobic digestion.
Sludge hot hydrolysis is a kind of simple, efficient sludge pre-treatment method, heat treating process is as a kind of ideal treatment technology, prior art also has the report about thermal treatment technology for hydrolyzing, but, in prior art, mud is normally heated to certain temperature at pyrolytic tank, then heat-treat under the effect of agitator, its normally intermittent type process, and, because sewage sludge viscosity is too high, usually the residence time in retort can be extended, the thermal hydrolysis treatment time extends, affect the time that the later stage sends into retort, it is directly sent into retort and can increase the difficulty of mud mixing and the energy consumption of process undoubtedly, and not easily realize running continuously, high to the requirement of equipment and pipeline valve, easy blocking pipe.
Utility model content
The utility model proposes a kind of continuous flow sludge thermal hydrolysis treatment unit, first mud added catalyzer before entering preheating can, send into after catalyzer and mud mix in preheating can, in preheating can, subsection setup has agitator from top to bottom, the viscosity of mud can be reduced, improve thermal hydrolysis processing efficiency.
Its technical solution comprises:
A kind of continuous flow sludge thermal hydrolysis treatment unit, it comprises preheating retort, middle pressure steam retort group and flash tank, described preheating retort is for holding pending mud, steam-in and opening for feed is provided with above the side of described preheating retort, steam in described middle pressure steam retort group enters in preheating retort by described steam-in, the discharge port of described preheating retort is communicated with the opening for feed of described middle pressure steam retort group, the discharge port of described middle pressure steam retort group is communicated with the opening for feed of described flash tank, the opening for feed of described preheating retort is connected with mixing tank, described mixing tank is used for catalyzer and mud to mix, the top of described preheating retort is provided with motor, described motor is connected with the stir shaft stretched in described preheating retort, described stir shaft is positioned at described preheating retort central shaft upwards, screw agitator and grid agitator is disposed with from bottom to top in described preheating retort, the paddle agitator that described grid agitator is arranged by two reverse symmetry forms, what be wherein positioned at below mixes the body of rod one and the body of rod two that device comprises oblique setting, one end of the body of rod one and the body of rod two is oblique to intersect on described stir shaft, the other end of the described body of rod one and the body of rod two is provided with erect mast down.
Described middle pressure steam retort group comprises the middle pressure steam retort of two arranged in parallel, wherein, the opening for feed of each middle pressure steam retort is all connected with the discharge port of described preheating retort by corresponding pipeline, and the discharge port of each middle pressure steam retort is all connected with the opening for feed of described flash tank by corresponding pipeline.
The described body of rod one and the body of rod two are 135 degree with the inner side angle of erect mast.
Described middle pressure steam retort group is injecting steam wherein from bottom, the vapour outlet at described middle pressure steam retort group top is connected on main steam header road through respective outlet branch road, the one end on described main steam header road is connected with the steam-in of preheating retort, and the other end is connected with the steam-in of flash drum overhead.
The periphery of described grid agitator is provided with sleeve.
On the pipeline that the opening for feed of each middle pressure steam retort is connected with preheating retort discharge port, the pipeline that is connected with flash tank opening for feed is provided with valve.
The utility model is provided with screw agitator and grid agitator from bottom to top in preheating retort, screw agitator can prevent mud from piling up in bottom, and the sleeve being installed in screw agitator periphery can improve the shearing action of screw agitator, improve stirring efficiency, be positioned at the grid agitator above screw agitator, it is made up of two paddle stirrers in oppositely setting, and, one end of the paddle stirrer body of rod is provided with erect mast, the contact area of paddle stirrer and material can be increased, stick on preheating retort wall when preventing sewage sludge viscosity excessive, reach well-beaten object, intersect on stir shaft in the paddle stirrer oppositely arranged, rotated by driven by motor, more stable.
By mixing tank, process in early stage is carried out to mud, catalyzer is added in mixing tank, the processing efficiency of mud in preheating retort can be improved, catalyzer and mud fully mix in rear feeding preheating retort, by preheating retort, mud is heated again, and mud fully can be mixed under the effect of fresh feed pump, can 30% be reduced by its viscosity of mud after the process of preheating retort, be beneficial to the carrying out of postorder work for the treatment of.
The utility model preheating retort realizes the abundant mixing of mud by fresh feed pump, and each middle pressure steam retort realizes mud mixing by the steam passed into bottom it, not only reduces process line failure rate, also saves energy consumption, thus reduce working cost; Hot steam is continuable to be delivered in middle pressure steam retort, and heat utilization ratio can improve 5%-10%; The exhaust steam reuse that each middle pressure steam retort and flash tank produce is nursed one's health to preheating, and whole technical process is airtight, can save energy consumption, also avoids waste gas to the pollution of environment, reduces by the two heavy risks polluted; The charging, discharging, temperature, pressure, liquid level etc. of preprocessing process are controlled by middle control, and level of automation is high, and operation is simple.
Due to mud first in mixing tank with catalyst mix, shorten the treatment time of mud in preheating retort, shorten whole process time, preheating retort and multiple middle pressure steam retort combine, the processing power of system can also be substantially increased, the pond of reducing middle pressure steam retort holds, thus reduce the cost of pressurized vessel, simultaneously because increasing preheating retort to the conditioning of mud, the viscosity of mud reduces about 30%, mobility is improved, thus better mixes with steam in middle pressure steam retort, reacts more abundant.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, explanation clear, complete is further done to the utility model:
Fig. 1 is the process flow sheet of the utility model device;
Fig. 2 is the sectional view of the utility model preheating can;
In figure, 1, mixing tank, 2, preheating retort, 31, middle pressure steam retort one, 32, middle pressure steam retort two, 4, flash tank, 5, main steam header road, 6, conveying pipeline, 7, steam injection pipeline, 8, delivery conduit, 9, screw agitator, 10, grid agitator.
Embodiment
Below in conjunction with specific embodiment, the utility model is described further.
As Fig. 1, shown in Fig. 2, continuous flow sludge thermal hydrolysis treatment unit, comprise mixing tank 1, preheating retort 2, middle pressure steam retort group and flash tank 4, wherein, middle pressure steam retort group comprises two middle pressure steam retort 31 and 32, 31 and 32 in being set up in parallel, the middle and upper part of preheating retort 2 is provided with feed pipe entrance, this entrance is connected by the exit end of pipeline with mixing tank 1, first pending mud be added to mixing tank from the opening for feed at the top of mixing tank 1, then catalyzer is added from mixing tank side entrance, also by convention stir mode by the mud in mixing tank and catalyst mix even, the mud mixed and catalyzer enter in preheating retort 2 from the discharge port bottom mixing tank through piping, the preheating retort side relative with feed pipe entrance is provided with steam-in, steam-in is connected with main steam header road 5, waste hot steam in main steam header road 5 mainly comes from middle pressure steam retort 1, in middle pressure steam retort 2 32 and flash tank 4, the middle and lower part of preheating retort is provided with discharge port, this discharge port is by respective conveying pipeline 6 and middle pressure steam retort 1, the opening for feed of middle pressure steam retort 2 32 connects, mud in middle pressure steam retort 1 and middle pressure steam retort 2 32 is sent in flash tank 4 through delivery conduit 8, material after process in preheating retort can enter middle pressure steam retort 1 along the pipeline of correspondence, middle pressure steam retort 2 32,
The volume of each steam reaction tank is all identical, and each steam reaction tank all offers steam injection mouth in bottom, by steam injection pipeline 7 to injecting steam in steam reaction tank.
Steam therefrom presses steam reaction tank 1, the bottom of middle pressure steam retort 2 32 enters, go out from top, after respective exhaust line, finally flow to main steam header road 5, thus enter in preheating retort 2, above-mentionedly conveniently to control, the pipeline of each correspondence is provided with valve, controls steam flow or mass flow.
The utility model is by improving the whipping appts in preheating retort, pyrolysis efficiency can be accelerated, namely the top of preheating retort 2 is provided with motor, below motor, stir shaft connects, motor rotates for driving this stir shaft, this stir shaft enters from the top of preheating retort, stretch into the middle and lower part of tank body always, and, stir shaft is positioned in the central axial direction of this tank body, screw agitator 9 and grid agitator 10 is disposed with from bottom to top in preheating retort, the paddle agitator that grid agitator is arranged by two reverse symmetry forms, one of them paddle agitator comprises the body of rod one and the body of rod two of oblique setting, one end of the body of rod one and the body of rod two is oblique to intersect on described stir shaft, the other end of the body of rod one and the body of rod two is provided with erect mast, the body of rod one and the body of rod two are 135 degree with the inner side angle of erect mast, stick on preheating retort wall when preventing sewage sludge viscosity excessive, reach well-beaten object.
Macromolecular substance can be converted into small-molecule substance by the utility model treatment unit, change character and the structure of mud, increase the content of dissolved organic matter, 100%-1000% can be improved, improve the biodegradable performance of mud, when carrying out anaerobic digestion again to the mud after process, organic matter transformation rate improves nearly more than 50%, thus obtain more biogas, realize recycling treatment.The utility model device continuously-running, can reduce the infringement to equipment, and the recycle of waste hot steam, can realize energy-conservation, running cost reduces greatly.
The using method of the utility model device, comprises the following steps:
Step 1: be about 80% to water ratio by the sludge condensation of certain Sewage Plant, then by its continus convergence mixing tank, and while conveying, in mixing tank, add catalyzer, the residence time in mixing tank is about 30 minutes, then the opening for feed of preheating retort is opened, the residence time in preheating retort is 30min, and the mud that preheating retort flows out first carries 30min to middle pressure steam retort 1; Then stop conveying, the mud continuing conveying 30min in middle pressure steam retort 2 32, according to above-mentioned steps successively cyclic switching, realizes the mud of being back to back of preheating retort; The waste hot steam that middle pressure steam retort 1 and middle pressure steam retort 2 32 produce is collected in waste hot steam main line, is then delivered in preheating retort and carries out recycle, carry out pre-heat agitated conditioning to mud;
Step 2: the mud sequence batch (in middle pressure steam retort 1 and middle pressure steam retort 2 32 is injected into be let out in flash tank, released vapour carries out pressure release and cracks process, be 40min in the residence time of flash tank, further broken macromolecular substance, reduce the particle diameter of mud, the waste hot steam of generation is got back in preheating retort.
Claims (6)
1. a continuous flow sludge thermal hydrolysis treatment unit, it comprises preheating retort, middle pressure steam retort group and flash tank, described preheating retort is for holding pending mud, steam-in and opening for feed is provided with above the side of described preheating retort, steam in described middle pressure steam retort group enters in preheating retort by described steam-in, the discharge port of described preheating retort is communicated with the opening for feed of described middle pressure steam retort group, the discharge port of described middle pressure steam retort group is communicated with the opening for feed of described flash tank, it is characterized in that: the opening for feed of described preheating retort is connected with mixing tank, described mixing tank is used for catalyzer and mud to mix, the top of described preheating retort is provided with motor, described motor is connected with the stir shaft stretched in described preheating retort, described stir shaft is positioned at described preheating retort central shaft upwards, screw agitator and grid agitator is disposed with from bottom to top in described preheating retort, the paddle agitator that described grid agitator is arranged by two reverse symmetry forms, the agitator being wherein positioned at below comprises the body of rod one and the body of rod two of oblique setting, one end of the body of rod one and the body of rod two is oblique to intersect on described stir shaft, the other end of the described body of rod one and the body of rod two is provided with erect mast down.
2. continuous flow sludge thermal hydrolysis treatment unit according to claim 1, it is characterized in that: described middle pressure steam retort group comprises the middle pressure steam retort of two arranged in parallel, wherein, the opening for feed of each middle pressure steam retort is all connected with the discharge port of described preheating retort by corresponding pipeline, and the discharge port of each middle pressure steam retort is all connected with the opening for feed of described flash tank by corresponding pipeline.
3. continuous flow sludge thermal hydrolysis treatment unit according to claim 1, is characterized in that: the described body of rod one and the body of rod two are 135 degree with the inner side angle of erect mast.
4. continuous flow sludge thermal hydrolysis treatment unit according to claim 1, it is characterized in that: described middle pressure steam retort group is injecting steam wherein from bottom, the vapour outlet at described middle pressure steam retort group top is connected on main steam header road through respective outlet branch road, the one end on described main steam header road is connected with the steam-in of preheating retort, and the other end is connected with the steam-in of flash drum overhead.
5. continuous flow sludge thermal hydrolysis treatment unit according to claim 1, is characterized in that: the periphery of described grid agitator is provided with sleeve.
6. continuous flow sludge thermal hydrolysis treatment unit according to claim 1, is characterized in that: on the pipeline that the opening for feed of each middle pressure steam retort is connected with preheating retort discharge port, the pipeline that is connected with flash tank opening for feed is provided with valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520347628.9U CN204689852U (en) | 2015-05-26 | 2015-05-26 | Continuous flow sludge thermal hydrolysis treatment unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520347628.9U CN204689852U (en) | 2015-05-26 | 2015-05-26 | Continuous flow sludge thermal hydrolysis treatment unit |
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| Publication Number | Publication Date |
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| CN204689852U true CN204689852U (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520347628.9U Expired - Fee Related CN204689852U (en) | 2015-05-26 | 2015-05-26 | Continuous flow sludge thermal hydrolysis treatment unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109000150A (en) * | 2018-09-05 | 2018-12-14 | 北京洁绿环境科技股份有限公司 | A kind of continuous discharge system and method for pressure vessel pressurized fluid |
| CN111875209A (en) * | 2020-07-08 | 2020-11-03 | 亚循绿色产业科技有限公司 | Livestock and poultry excrement resource regeneration treatment and municipal sludge pyrohydrolysis device and process |
| CN113042204A (en) * | 2021-03-11 | 2021-06-29 | 迁安市天祥铁选有限公司 | Fishing machine |
-
2015
- 2015-05-26 CN CN201520347628.9U patent/CN204689852U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109000150A (en) * | 2018-09-05 | 2018-12-14 | 北京洁绿环境科技股份有限公司 | A kind of continuous discharge system and method for pressure vessel pressurized fluid |
| CN111875209A (en) * | 2020-07-08 | 2020-11-03 | 亚循绿色产业科技有限公司 | Livestock and poultry excrement resource regeneration treatment and municipal sludge pyrohydrolysis device and process |
| CN113042204A (en) * | 2021-03-11 | 2021-06-29 | 迁安市天祥铁选有限公司 | Fishing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20160526 |