CN102040280A

CN102040280A - Pulse ejection internal-circulation anaerobic reactor

Info

Publication number: CN102040280A
Application number: CN201010581566XA
Authority: CN
Inventors: 马翠忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-10
Filing date: 2010-12-10
Publication date: 2011-05-04
Anticipated expiration: 2030-12-10
Also published as: CN102040280B

Abstract

The invention relates to a pulse ejection internal-circulation anaerobic reactor, which is characterized in that the reactor takes an upflow anaerobic sludge blanket (UASB) reactor as a basis. A reactor shell above a three-phase separator by taking the three-phase separator as a boundary is an anaerobic reaction zone I; a reactor shell below the three-phase separator is a settling zone II; the three-phase separator is provided with an internal-circulation system formed by cooperative work of an ejector spraying pipe, an ejecting pipe, a circulating backflow pipe and a gas-water separator; the internal-circulation system consists of the three-phase separator, the ejector spraying pipe, the ejecting pipe, the circulating backflow pipe, the gas-water separator and a filter net; the gas-water separator is arranged on the three-phase separator; the lower end of the ejecting pipe is immersed in sewage in the three-phase separator, and the upper end of the ejecting pipe extends in the gas-water separator; the ejector spraying pipe is U-shaped, one end of the ejector spraying pipe is arranged in the ejecting pipe, and the other end of the ejector spraying pipe is arranged at the upper part of a gas collecting cover which is internally provided with the filter net; and the circulation backflow pipe connected with the gas-water separator passes through the gas collecting cover and deeply enters into the bottom of settling zone II. The pulse ejection internal-circulation anaerobic reactor has the beneficial effects that the cost and the operating cost are reduced, the system operation is reliable and the installation and the transportation are convenient.

Description

Pulse injection internal-circulation anaerobic reactor

Technical field

The invention belongs to the device that utilizes organism anaerobically fermenting generation biogas, particularly a kind of sewage disposal device---pulse injection internal-circulation anaerobic reactor.

Background technology

Internal-circulation anaerobic reactor of the prior art (Internal Circulation, be called for short IC) be the third generation ultra-high efficiency anaerobic reactor of on UASB reactor basis, developing, it is characterized in that being equipped with in reactor the two-stage triphase separator, reactor lower part can be moved under high loading condiction.Inside does not need additionaling power, only realizes the internal recycle of mixed solution as the power that promotes by the biogas of self.

The two-stage triphase separator is housed in the IC reactor, first step anaerobic reactor (bottom) is a main reactor, efficient is high, second stage anaerobic reactor (top) is an auxiliary reactor, main purpose is to utilize air water mixed solution and this district's density of liquid difference generation circulation power (chimneyeffect) in the biogas-lift pipe, because this district's anaerobic activated sludge content is few, causes this district's efficient extremely low.

In order to obtain bigger biogas-lift power, IC reactor aspect ratio is (being generally 4-8) greatly, and this is because the reactor principle of work determines.Because height for reactor increases, and material specification must strengthen, because aspect ratio is big, the reactor of same volume is that 1 o'clock materials becomes several times to increase with aspect ratio, has wasted material, has improved manufacturing cost on the one hand; On the other hand because the higher power consumption that increases intake pump of reactor has improved working cost.

Summary of the invention

Overcoming the deficiency of existing IC reactor, design a kind of anaerobic reactor that has only the one-level triphase separator can realize internal recycle again, is exactly on the basis of UASB reactor, sets up pulse injection circulation device.

The invention discloses a kind of pulse injection internal-circulation anaerobic reactor, pulse injection internal-circulation anaerobic reactor forms to improve on the UASB reactor, the objective of the invention is to overcome the deficiency of existing IC reactor, design a kind of anaerobic reactor that has only the one-level triphase separator can realize internal recycle again, be exactly on the basis of UASB reactor, set up pulse injection circulation device.

Structure of the present invention comprises anaerobic reaction district I, the settling region II, the injector jet pipe, injecting tube, air water separator, throttling valve, tensimeter, the control tracheae, filtering net, reactor shell, triphase separator, the pump around circuit pipe, gas skirt, water distributor, the water receiving bucket, the water distribution V-notch weir, airway, reflector, it is characterized in that described reactor is based on the UASB reactor, the reactor shell that with the triphase separator is the triphase separator top of boundary is an anaerobic reaction district I, the reactor shell of triphase separator below is the settling region II, on triphase separator, be provided with one by the injector jet pipe, injecting tube, the common internal recycling system that constitutes of pump around circuit pipe and air water separator collaborative work, described internal recycling system is by triphase separator, the injector jet pipe, injecting tube, the pump around circuit pipe, air water separator, filtering net constitutes, air water separator is set above the triphase separator, the injecting tube lower end is immersed in the interior sewage of triphase separator, the injecting tube upper end is stretched in the air water separator, the injector jet pipe is a U-shaped, one end is in injecting tube, the other end is on the top of gas skirt, filtering net is set in the gas skirt, and the pump around circuit pipe that links to each other with air water separator passes gas skirt and is deep into II bottom, settling region.The biogas that triphase separator is collected is not directly to introduce biogas storage device, but temporary transient the collection is stored in the gas skirt at triphase separator top, accumulation along with biogas, the gas that stores increases, liquid level in the triphase separator progressively descends, and when liquid level was lower than the lower-most point of injector jet pipe, collected biogas was injected into injecting tube by the injector jet pipe, biogas enters air water separator from injecting tube again, drives muddy water mixed solution and enters air water separator.The injector jet pipe, injecting tube, pump around circuit pipe and air water separator collaborative work, constitute the internal recycling system jointly, with the collected biogas of triphase separator is power, biogas enters accumulator unit by airway, muddy water mixed solution then follows the ring return line and drops to II bottom, settling region, utilize the injector jet pipe, the injecting tube injection drives sewage and realizes automated cycle, carrying out along with the injection process, biogas in the triphase separator reduces gradually, liquid level rises gradually, when liquid floods the inlet mouth of injector jet pipe, and this injection end of processing, continue accumulation biogas, prepare the automated cycle of sewage next time.By throttle valve control the part biogas in the gas skirt is directly imported steam separator by the control tracheae, can reduce intensity of circulation, to adapt to different fermentation raw materials, according to the periodical change of pressure in the tensimeter, can observe the aerogenesis situation of anaerobic reactor and the running condition of the recycle system easily.Also pressure changing can be connected the supervisory control system running process with computer by transmitter.

The invention has the beneficial effects as follows:

1. compare with the traditional IC reactor, have only the one-level triphase separator, greatly reduce height for reactor, reduced cost.

2. compare with traditional UASB reactor, use the biogas that self the produces realization internal recycle that is used as power, reduced working cost.

3. use injector as circulation device, internal circulating load is big, whole circulation system movement-less part, reliable operation.

4. use filtering net protection injector jet pipe inlet mouth, make it not blocked, guarantee that system is reliable.

5. system's service intermittent.Have only when having accumulated abundant biogas, system just moves, and quantity of circulating water is directly proportional with biogas output, can not cause recycle system paralysis because of biogas output is few.

6. intensity of circulation is controlled, and running situation is observed convenient.System's service data can deposit computer in immediately, is convenient to adjust operating parameter.

7. system elementization, the unit individuality is little, in light weight, economical with materials, the reactor of adaptation Any shape, installation and transportation are convenient.

8. bigger suspended solid is blocked under the filtering net in the sewage, sinks automatically after the hydrolysis, simultaneously because liquid level change periodically up and down in the gas skirt can not cause the scum silica frost crust.

Description of drawings

Fig. 1 is a structural principle synoptic diagram of the present invention;

Fig. 2 is the embodiments of the invention structural representations;

Among the figure: anaerobic reaction district I, settling region II, injector jet pipe 1, injecting tube 2, air water separator 3, throttling valve 4, tensimeter 5, control tracheae 6, filtering net 7, reactor shell 8, triphase separator 9, pump around circuit pipe 10, gas skirt 11, water distributor 12, water receiving bucket 13, water distribution V-notch weir 14, airway 15, reflector 16.

Embodiment

With reference to accompanying drawing the present invention is done following concrete detailed description, as shown in drawings, structure of the present invention comprises anaerobic reaction district I, the settling region II, injector jet pipe 1, injecting tube 2, air water separator 3, throttling valve 4, tensimeter 5, control tracheae 6, filtering net 7, reactor shell 8, triphase separator 9, pump around circuit pipe 10, gas skirt 11, water distributor 12, water receiving bucket 13, water distribution V-notch weir 14, airway 15, reflector 16, it is characterized in that described reactor is based on the UASB reactor, with triphase separator 9 is that the reactor shell 8 of triphase separator 9 tops of boundary is an anaerobic reaction district I, the reactor shell 8 of triphase separator 9 belows is the settling region II, on triphase separator 9, be provided with one by injector jet pipe 1, injecting tube 2, the common internal recycling system that constitutes of pump around circuit pipe 10 and air water separator 3 collaborative works, described internal recycling system is by triphase separator 9, injector jet pipe 1, injecting tube 2, pump around circuit pipe 10, air water separator 3, filtering net 7 constitutes, air water separator 3 is set above the triphase separator 9, injecting tube 2 lower ends are immersed in the sewage in the triphase separator 9, injecting tube 2 upper ends are stretched in the air water separator 3, injector jet pipe 1 is a U-shaped, one end is in injecting tube 2, the other end is on the top of gas skirt 11, filtering net 7 is set in the gas skirt 11, the pump around circuit pipe 10 that links to each other with air water separator 3 passes gas skirt 11 and is deep into II bottom, settling region, the biogas that triphase separator 9 is collected is not directly to introduce biogas storage device, but temporary transient the collection is stored in the gas skirt 11 at triphase separator 9 tops, accumulation along with biogas, the gas that stores increases, liquid level in the triphase separator 9 progressively descends, when liquid level is lower than the lower-most point of injector jet pipe 1, collected biogas is injected into injecting tube 2 by injector jet pipe 1, biogas enters air water separator 3 from injecting tube 2 again, drive muddy water mixed solution and enter air water separator 3, injector jet pipe 1, injecting tube 2, pump around circuit pipe 10 and air water separator 3 collaborative works, constitute the internal recycling system jointly, with triphase separator 9 collected biogas is power, biogas enters accumulator unit by airway 15, muddy water mixed solution then follows ring return line 10 and drops to II bottom, settling region, utilize injector jet pipe 1, injecting tube 2 injections drive sewage and realize automated cycle, carrying out along with the injection process, biogas in the triphase separator 9 reduces gradually, liquid level rises gradually, when liquid floods the inlet mouth of injector jet pipe 1, this injection end of processing, continue accumulation biogas, prepare the automated cycle of sewage next time.By throttling valve 4 controls the part biogas in the gas skirt 11 is directly imported steam separator 3 by control tracheae 6, can reduce intensity of circulation, to adapt to different fermentation raw materials, according to the periodical change of pressure in the tensimeter 5, can observe the aerogenesis situation of anaerobic reactor and the running condition of the recycle system easily.Also pressure changing can be connected the supervisory control system running process with computer by transmitter.

Embodiment recited above is described preferred implementation of the present invention; be not that design of the present invention and scope are limited; under the prerequisite that does not break away from design concept of the present invention; common engineering technical personnel make technical scheme of the present invention in this area various modification and improvement; all should fall into protection scope of the present invention; the technology contents that the present invention asks for protection all is documented in claims.

Claims

1. pulse injection internal-circulation anaerobic reactor, comprise anaerobic reaction district I, the settling region II, injector jet pipe (1), injecting tube (2), air water separator (3), throttling valve (4), tensimeter (5), control tracheae (6), filtering net (7), reactor shell (8), triphase separator (9), pump around circuit pipe (10), gas skirt (11), water distributor (12), water receiving bucket (13), water distribution V-notch weir (14), airway (15), reflector (16), it is characterized in that described reactor is based on the UASB reactor, with triphase separator (9) is that the reactor shell (8) of triphase separator (9) top of boundary is an anaerobic reaction district I, the reactor shell (8) of triphase separator (9) below is the settling region II, on triphase separator (9), be provided with one by injector jet pipe (1), injecting tube (2), the common internal recycling system that constitutes of pump around circuit pipe (10) and air water separator (3) collaborative work, described internal recycling system is by triphase separator (9), injector jet pipe (1), injecting tube (2), pump around circuit pipe (10), air water separator (3), filtering net (7) constitutes, air water separator (3) is set above the triphase separator (9), injecting tube (2) lower end is immersed in the interior sewage of triphase separator (9), injecting tube (2) upper end is stretched in the air water separator (3), injector jet pipe (1) is a U-shaped, one end is in injecting tube (2), the other end is on the top of gas skirt (11), filtering net (7) is set in the gas skirt (11), and the pump around circuit pipe (10) that links to each other with air water separator (3) passes gas skirt (11) and is deep into II bottom, settling region.

2. claims 1 described pulse injection internal-circulation anaerobic reactor, it is characterized in that the biogas that triphase separator (9) is collected is not directly to introduce biogas storage device, but temporary transient the collection is stored in the gas skirt (11) at triphase separator (9) top, accumulation along with biogas, the gas that stores increases, liquid level in the triphase separator (9) progressively descends, when liquid level is lower than the lower-most point of injector jet pipe (1), collected biogas is injected into injecting tube (2) by injector jet pipe (1), biogas enters air water separator (3) from injecting tube (2) again, drives muddy water mixed solution and enters air water separator (3).

3. claims 1 described pulse injection internal-circulation anaerobic reactor, it is characterized in that injector jet pipe (1), injecting tube (2), pump around circuit pipe (10) and air water separator (3) collaborative work, constitute the internal recycling system jointly, with the collected biogas of triphase separator (9) is power, biogas enters accumulator unit by airway (15), muddy water mixed solution then follows ring return line (10) and drops to II bottom, settling region, utilize injector jet pipe (1), injecting tube (2) injection drives sewage and realizes automated cycle, carrying out along with the injection process, biogas in the triphase separator (9) reduces gradually, liquid level rises gradually, when liquid floods the inlet mouth of injector jet pipe (1), this injection end of processing continues accumulation biogas, prepares the automated cycle of sewage next time.