CN209989404U - External heating system of biogas reactor - Google Patents
External heating system of biogas reactor Download PDFInfo
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- CN209989404U CN209989404U CN201920276355.1U CN201920276355U CN209989404U CN 209989404 U CN209989404 U CN 209989404U CN 201920276355 U CN201920276355 U CN 201920276355U CN 209989404 U CN209989404 U CN 209989404U
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Abstract
The utility model discloses an external biogas reactor heating system relates to marsh gas preparation technical field. The utility model comprises a methane reactor; the upper end and the lower end in the biogas reactor are respectively provided with a cold biogas slurry suction inlet and a biogas slurry distribution port; the biogas slurry suction inlet is sequentially connected with a biogas slurry circulating pump and a heater; one end of the heater is connected with the biogas slurry distribution port through a pipeline. The utility model solves the problems of low heat exchange efficiency and uneven reaction temperature field of the existing biogas slurry by arranging the heater to heat and exchange heat the biogas slurry; the biogas slurry in the biogas reactor is circularly stirred and mixed by a biogas slurry circulating pump; the problems that the sealing difficulty of a biogas reactor is high and the equipment maintenance cost is high due to the adoption of the conventional stirring device are solved.
Description
Technical Field
The utility model belongs to the technical field of marsh gas preparation, especially, relate to an external marsh gas reactor heating system.
Background
In the process of methane fermentation, a large amount of activated sludge of methane fermentation microorganisms is hosted, the fermentation temperature of biogas slurry is a key factor influencing the methane yield, the fermentation temperature is low, the activity of anaerobic fermentation microorganisms is reduced, the growth and metabolism of the microorganisms are reduced, and the gas production rate is reduced. Meanwhile, the temperature change rate in the anaerobic ecosystem has great influence on the activity of the methanobacteria; therefore, the biogas slurry in the biogas digester is maintained at a proper temperature, which is crucial to the gas yield, and the conventional biogas slurry heating mainly adopts two modes of heating by an inner coil and heating by a coil on the outer wall of the tank body; the inner coil is adopted for heating, and as the biogas fermentation process is carried out, the fermented materials are deposited on the coil to form dirt crusts, so that the heat exchange efficiency is gradually reduced, and the coil is damaged and difficult to replace; the uniformity of a temperature field in the fermentation tank cannot be guaranteed in actual operation; by adopting the mode of heating the coil on the outer wall of the tank body, the coil is in line contact with the pipe wall, so that the heat exchange efficiency is not high, and the phenomenon of uneven mixing of a temperature field also exists; in addition, the good contact between the biogas fermentation microorganisms and the raw materials is also beneficial to the fermentation, and the most direct and effective method for realizing the contact is stirring; the existing biogas preparation mostly adopts a stirring device added in a biogas reactor or a biogas pool to realize stirring and mixing of biogas slurry, the sealing difficulty of the biogas reactor is increased by the mode, meanwhile, the stirring device is also easy to corrode, and the later maintenance cost is higher.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an external biogas reactor heating system, which solves the problems of low heat exchange efficiency and uneven biogas slurry reaction temperature field of the existing biogas slurry by arranging a heater to carry out heat exchange heating on the biogas slurry; the biogas slurry in the biogas reactor is circularly stirred and mixed by a biogas slurry circulating pump; the problems that the sealing difficulty of a biogas reactor is high and the equipment maintenance cost is high due to the adoption of the conventional stirring device are solved.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model relates to an external biogas reactor heating system, which comprises a biogas reactor; the upper end in the biogas reactor is provided with a cold biogas slurry suction inlet;
the cold biogas slurry suction inlet penetrates through the side wall of the biogas reactor through a cold biogas slurry pipeline and is connected with a biogas slurry circulating pump inlet valve and a biogas slurry circulating pump;
the outlet side of the biogas slurry circulating pump is sequentially connected with an outlet valve of the biogas slurry circulating pump and a heater through an outlet pipe of the biogas slurry circulating pump;
the heater is connected with a boiler through a water inlet pipeline and a water outlet pipeline; the heater is sequentially connected with a heater outlet valve and a hot biogas slurry distribution port through a hot biogas slurry pipeline; the hot biogas slurry distribution port is positioned at the lower end in the biogas reactor.
Further, the methane reactor is provided with a liquid level transmitter; the liquid level transmitter is in signal connection with the biogas slurry circulating pump.
Furthermore, the seal heads at two ends of the heater are provided with an access hole and an exhaust valve.
Further, the cold biogas slurry pipeline is provided with a temperature transmitter; and the temperature transmitter is in signal connection with the boiler.
Further, the hot biogas slurry pipeline is provided with a temperature sensor.
The utility model discloses following beneficial effect has:
1. the utility model carries out heat exchange to the biogas slurry through the external heater, so that the biogas slurry is heated more fully and the temperature is more uniform;
2. the utility model discloses a set up the natural pond liquid sunction inlet in the natural pond liquid reactor upper end, set up the natural pond liquid and distribute the mouth in the lower extreme, when the natural pond liquid realizes circulating through the natural pond liquid circulating pump, natural pond liquid in the natural pond liquid reactor stirs the mixture from the bottom is upwards turned, has avoided adopting the agitating unit to realize the natural pond liquid stirs the mixture, has increased the condition of the sealed degree of difficulty of natural pond liquid reactor and equipment maintenance cost;
3. the utility model is provided with a temperature transmitter and a temperature sensor respectively on the cold biogas liquid pipeline and the hot biogas liquid pipeline, and the temperature transmitter is connected with the boiler by signals; the heating temperature of the biogas slurry is controlled more accurately;
of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an external biogas reactor heating system of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-a biogas reactor, 2-a cold biogas slurry suction inlet, 3-a cold biogas slurry pipeline, 4-a biogas slurry circulating pump inlet valve, 5-a biogas slurry circulating pump, 6-a biogas slurry circulating pump outlet valve, 7-a biogas slurry circulating pump outlet pipe, 8-a heater, 9-a first exhaust valve, 10-a second exhaust valve, 11-a first access hole, 12-a second access hole, 13-a water inlet pipeline, 14-a water outlet pipeline, 15-a heater outlet valve, 16-a hot biogas slurry pipeline, 17-a hot biogas slurry distribution hole, 18-a temperature transmitter, 19-a liquid level transmitter, 20-a temperature sensor and 21-a boiler.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "outer", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
The utility model relates to an external biogas reactor heating system, which comprises a biogas reactor 1; the upper end of the interior of the biogas reactor 1 is provided with a cold biogas slurry suction inlet 2.
The cold biogas slurry suction inlet 2 penetrates through the side wall of the biogas reactor 1 through a cold biogas slurry pipeline 3 and is connected with a biogas slurry circulating pump inlet valve 4 and a biogas slurry circulating pump 5.
The outlet side of the biogas slurry circulating pump 5 is sequentially connected with a biogas slurry circulating pump outlet valve 6 and a heater 8 through a biogas slurry circulating pump outlet pipe 7.
The heater 8 is connected with a boiler 21 through a water inlet pipeline 13 and a water outlet pipeline 14; the heater 8 is sequentially connected with a heater outlet valve 15 and a hot biogas slurry distribution port 17 through a hot biogas slurry pipeline 16; the hot biogas slurry distribution port 17 is positioned at the lower end inside the biogas reactor 1.
The hot biogas slurry enters the biogas reactor 1 from the hot biogas slurry distribution port 17 and then is turned upwards for mixing, heat exchange is fully carried out with the cold biogas slurry inside, a stirring device is not needed for stirring and mixing the biogas slurry, and the conditions that the sealing difficulty of the biogas reactor is increased and the equipment maintenance cost is increased due to the installation of the stirring device are avoided.
Wherein, the biogas reactor 1 is provided with a liquid level transmitter 19; the liquid level transmitter 19 is in signal connection with the biogas slurry circulating pump 5; the liquid level transmitter 19 can preferably be a magnetic turning plate liquid level meter or a top-mounted ultrasonic liquid level meter to monitor the liquid level of the biogas slurry in the biogas reactor 1 and interlock with the biogas slurry circulating pump 5, and when the liquid level reaches the liquid level warning value of the biogas slurry suction inlet 2, the biogas slurry circulating pump 5 is stopped in an interlocking manner to prevent the biogas slurry circulating pump 5 from idle running.
Wherein, the end sockets at both ends of the heater 8 are respectively provided with a first exhaust valve 9, a first access hole 11, a second exhaust valve 10 and a second access hole 12; the heater 8 is preferably a large-channel tube-plate heat exchanger, and the bottoms of the end sockets at two ends are respectively provided with a first access hole 11 and a second access hole 12, so that internal biogas slurry can be discharged completely during maintenance; the upper parts of the end sockets at the two ends are respectively provided with a first exhaust valve 9 and a second exhaust valve 10, so that the heater 8 is prevented from generating gas accumulation in the heating process of biogas slurry reaction, and the exhaust valves can be directly connected with the gas outlet pipe of the biogas reactor 1 through a pipeline, so that the recycling of biogas is improved.
Wherein the cold biogas slurry pipeline 3 is provided with a temperature transmitter 18; the temperature transmitter 18 is in signal connection with the boiler 21; the hot biogas slurry pipeline 16 is provided with a temperature sensor 20; the temperature of the biogas slurry on the upper layer of the biogas reactor 1 is detected in real time through the temperature transmitter 18, a signal is fed back to the boiler 21, and the temperature of hot water is controlled through the boiler 21, so that the exchange temperature of the hot water and the biogas slurry in the heater 8 is adjusted; can effectually detect the actual temperature behind the natural pond liquid heat exchange through temperature-sensing ware 20, prevent that natural pond liquid heating from overtemperature to realize the accurate control to natural pond liquid temperature, make the interior temperature field of natural pond liquid more even.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. An external biogas reactor heating system is characterized in that: comprises a biogas reactor (1); the upper end in the biogas reactor (1) is provided with a cold biogas slurry suction inlet (2);
the cold biogas slurry suction inlet (2) penetrates through the side wall of the biogas reactor (1) through a cold biogas slurry pipeline (3) and is sequentially connected with a biogas slurry circulating pump inlet valve (4) and a biogas slurry circulating pump (5);
the outlet side of the biogas slurry circulating pump (5) is sequentially connected with a biogas slurry circulating pump outlet valve (6) and a heater (8) through a biogas slurry circulating pump outlet pipe (7);
the heater (8) is connected with a boiler (21) through a water inlet pipeline (13) and a water outlet pipeline (14); the heater (8) is sequentially connected with a heater outlet valve (15) and a hot biogas slurry distribution port (17) through a hot biogas slurry pipeline (16);
the hot biogas slurry distribution port (17) is positioned at the lower end in the biogas reactor (1).
2. An external biogas reactor heating system according to claim 1, characterized in that the biogas reactor (1) is provided with a liquid level transmitter (19); the liquid level transmitter (19) is in signal connection with the biogas slurry circulating pump (5).
3. The external biogas reactor heating system according to claim 1, wherein the first exhaust valve (9), the first access opening (11), the second exhaust valve (10) and the second access opening (12) are respectively arranged at the end sockets at both ends of the heater (8).
4. The external biogas reactor heating system according to claim 1, characterized in that the cold biogas slurry pipeline (3) is provided with a temperature transmitter (18); the temperature transmitter (18) is in signal connection with the boiler (21).
5. The external biogas reactor heating system according to claim 1, characterized in that the hot biogas slurry pipe (16) is provided with a temperature sensor (20).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920276355.1U CN209989404U (en) | 2019-03-05 | 2019-03-05 | External heating system of biogas reactor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920276355.1U CN209989404U (en) | 2019-03-05 | 2019-03-05 | External heating system of biogas reactor |
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| CN209989404U true CN209989404U (en) | 2020-01-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109797098A (en) * | 2019-03-05 | 2019-05-24 | 合肥万豪能源设备有限责任公司 | A kind of external marsh gas reactor heating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109797098A (en) * | 2019-03-05 | 2019-05-24 | 合肥万豪能源设备有限责任公司 | A kind of external marsh gas reactor heating system |
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