CN118439897B - A device for recycling waste heat from intensive aerobic fermentation of vegetable straw on demand - Google Patents
A device for recycling waste heat from intensive aerobic fermentation of vegetable straw on demand Download PDFInfo
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- 239000002918 waste heat Substances 0.000 title claims abstract description 87
- 238000010564 aerobic fermentation Methods 0.000 title claims abstract description 63
- 238000004064 recycling Methods 0.000 title claims abstract description 24
- 235000013311 vegetables Nutrition 0.000 title claims abstract description 21
- 239000010902 straw Substances 0.000 title claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 70
- 238000011084 recovery Methods 0.000 claims abstract description 34
- 239000002912 waste gas Substances 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 31
- 238000005273 aeration Methods 0.000 claims abstract description 27
- 230000004151 fermentation Effects 0.000 claims abstract description 26
- 238000000855 fermentation Methods 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 230000032683 aging Effects 0.000 claims description 17
- 238000009825 accumulation Methods 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 2
- 238000004332 deodorization Methods 0.000 claims 2
- 238000006213 oxygenation reaction Methods 0.000 abstract description 23
- 239000002921 fermentation waste Substances 0.000 abstract description 5
- 230000001877 deodorizing effect Effects 0.000 description 17
- 238000010586 diagram Methods 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010815 organic waste Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010806 kitchen waste Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/964—Constructional parts, e.g. floors, covers or doors
- C05F17/971—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material
- C05F17/979—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material the other material being gaseous
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/60—Heating or cooling during the treatment
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/964—Constructional parts, e.g. floors, covers or doors
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Biotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a vegetable straw intensive aerobic fermentation waste gas waste heat on-demand recycling device, which belongs to the technical field of agricultural environment-friendly devices and comprises the following components: the air guide device receives waste gas and waste heat air; one end of the gas transmission main pipe is connected with the air guide device, and the other end of the gas transmission main pipe is connected with the heat exchanger; the heat exchanger is provided with an exhaust gas waste heat air inlet pipeline connected with the gas transmission main pipe, and an oxygenation aeration air inlet pipeline connected with the aerobic fermentation equipment, and the exhaust gas waste heat air inlet pipeline and the oxygenation aeration air inlet pipeline exchange heat; the waste heat recovery control device comprises a diversion gas transmission pipeline connected with a gas transmission main pipe, a first flow control valve is arranged on the gas transmission main pipe, a second flow control valve is arranged on the diversion gas transmission pipeline, and the heat generated in the fermentation process of vegetable straws in the fermentation bin is recycled as required. The invention effectively solves the problem of low utilization rate of waste gas waste heat, and realizes the recycling of waste gas waste heat according to requirements.
Description
Technical Field
The invention belongs to the technical field of agricultural environment-friendly devices, and particularly relates to a vegetable straw intensive aerobic fermentation waste gas waste heat on-demand recycling device.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Aiming at the common problems of environmental pollution and low comprehensive utilization rate of organic wastes such as livestock manure, crop straws, vegetable straws and the like, the method combines the requirements of improving the quality of soil, preserving fertilizer and preserving water and adapting crops by locally improving soil, and utilizes the advanced aerobic fermentation composting technology to develop the technical equipment research of the fertilizer utilization of the organic wastes, which is the main way at present. The intensive aerobic fermentation of vegetable stalks is a main way for solving the problem of wastes in large vegetable producing areas. Compared with the strip stack type, groove (bin) type and film-coating type treatment processes, the vegetable straw intensive aerobic fermentation technology has the characteristics of short fermentation period, obvious harmful substance reduction, high product quality and the like.
The unique lamination structure of the intensive aerobic fermentation intelligent equipment can realize synchronous material-turning and oxygenation thermal circulation of 'single-layer independent oxygenation aeration-timing material-turning from top to bottom and heat recycling', and the maximum temperature in a fermentation bin can reach more than 90 ℃. However, under the factors of low temperature in winter, high water content of raw materials, low porosity, poor oxygenation effect and the like, the first layer material stack of the fermentation bin always has the condition of insufficient self fermentation temperature, and an external heat source is required to provide auxiliary heat to accelerate the temperature rising speed, otherwise, the problems of low biological activity, difficult self-starting fermentation, high carbon and nitrogen loss, poor quality stability of organic fertilizer and the like are easily caused. In the aerobic fermentation process, the steam and odor generated in the bin contain much heat, and if the steam and odor are directly discharged, energy waste can be caused, so that the heat energy can be utilized as required through waste heat recovery. Generally, after steam and odor generated in the bin are treated by the integrated deodorizing device, heat mainly exists in the form of waste gas waste heat and circulating water waste heat of the spray tower. The waste heat of the circulating water can be recovered by water-water heat exchange, the heat is used for secondary decomposition of the aerobic fermentation product in the aging zone, and the waste heat of the waste gas can also provide the required heat energy for an oxygenation aeration pipeline of the aerobic fermentation intelligent equipment through a waste heat recovery device. The waste heat of the waste gas is recycled, thereby indirectly realizing the temperature increase and heat preservation of the aerobic fermentation and promoting the rapid self-starting of the aerobic fermentation.
In order to promote the waste heat recovery in the aerobic fermentation process, researchers at home and abroad combine the heat transfer principle to design various waste heat recovery and utilization devices, for example, CN 202021636814.1 discloses a kitchen waste aerobic fermentation device with waste heat recovery and automatic aeration. However, aiming at the requirements of rapid harmless treatment of large vegetable straws and series of problems existing in the practical application of intelligent aerobic fermentation equipment, a related matched waste heat on-demand recycling device is lacking; at present, the existing waste heat recovery device has low reuse rate due to less waste heat and improper heat preservation measures, and is difficult to realize efficient on-demand utilization of the waste heat, so that the waste heat recovery device needs to be perfectly optimized, and the problems are solved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a device for recycling waste heat of vegetable straw intensive aerobic fermentation waste gas on demand, which can realize the on-site recycling of a heat source and the on-demand utilization of waste gas waste heat.
In order to achieve the above object, the present invention is realized by the following technical scheme:
In a first aspect, the invention provides a device for recycling waste heat of waste gas generated by intensive aerobic fermentation of vegetable straw on demand, comprising:
The air guide device receives waste gas and waste heat air;
one end of the gas transmission main pipe is connected with the air guide device, and the other end of the gas transmission main pipe is connected with the heat exchanger;
the heat exchanger is provided with an exhaust gas waste heat air inlet pipeline connected with the gas transmission main pipe, and an oxygenation aeration air inlet pipeline connected with the aerobic fermentation equipment, and the exhaust gas waste heat air inlet pipeline and the oxygenation aeration air inlet pipeline exchange heat;
The waste heat recovery control device comprises a turning gas transmission pipeline connected with a gas transmission main pipe, a first flow control valve is arranged on the gas transmission main pipe, and a second flow control valve is arranged on the turning gas transmission pipeline.
As a further technical scheme, the outlet end of the turning gas pipeline is connected to the aging area through a drying pipeline; the first flow control valve, the second flow control valve and the controller are connected.
As a further technical scheme, when the waste heat recovery quantity does not meet the preset demand quantity of the aerobic fermentation equipment, the opening of the first flow control valve is regulated to be gradually increased, and the second flow control valve is closed; when the waste heat recovery quantity is excessive, the opening of the first flow control valve is adjusted to be gradually reduced to be closed, the opening of the second flow control valve is gradually increased, hot gas is turned to a turning gas pipeline, and the excess waste heat recovery quantity is turned to an aging area.
As a further technical scheme, the heat exchanger comprises a housing, a plurality of concentric sleeves are arranged in the housing from top to bottom, each concentric sleeve comprises an outer pipeline and an inner pipeline which are concentrically arranged, the outer pipelines of adjacent concentric sleeves are communicated, the inner pipelines of adjacent concentric sleeves are communicated through a U-shaped elbow, the outer pipeline is used as an exhaust gas waste heat air inlet pipeline, and the inner pipeline is used as an oxygenation aeration air inlet pipeline.
As a further technical scheme, the outer pipelines of the plurality of concentric casings are connected into an S shape, and the inner pipelines of the plurality of concentric casings are connected into an S shape.
As a further technical solution, the outer pipeline hot gas travelling direction is the same as the inner pipeline air travelling direction.
As a further technical scheme, the orifices of the concentric sleeves are arranged obliquely downwards along the air flow advancing direction, two adjacent concentric sleeves connected by the U-shaped elbow are in mirror symmetry, and two spaced concentric sleeves are in parallel relation.
As a further technical scheme, the inner wall of the housing is filled with a heat-insulating material; the front end of the heat exchanger is also provided with a monitoring element which is connected with the controller; the bottom of the concentric sleeve outer sleeve at the bottom is provided with a water accumulation disc, the side wall of the water accumulation disc is connected with a condensed water discharge pipe, and the outlet of the condensed water discharge pipe is sealed by a plugging pipe.
As a further technical scheme, outer pipeline and inner pipeline are straight tube, and outer pipeline and inner pipeline's diameter are different, and the inner pipeline suit is in outer pipeline, and the outer pipeline is extended out at the inner pipeline both ends.
As a further technical scheme, the waste gas waste heat air inlet pipeline is connected with the aging zone, one end of the oxygenation aeration air inlet pipeline is used for allowing cold air to enter and heating the cold air through heat exchange, the other end of the oxygenation aeration air inlet pipeline is connected with the aerobic fermentation equipment through the oxygenation aeration pipeline, the aerobic fermentation equipment is provided with a fermentation bin, and the heated air is sent into the fermentation bin of the aerobic fermentation equipment through the oxygenation aeration pipeline; the air guide is connected with the integrated deodorizing device, the fermenting bin is connected with the integrated deodorizing device through a pipeline, and the aerobic fermentation equipment is also connected with the aging area.
The beneficial effects of the invention are as follows:
According to the waste gas waste heat on-demand recycling device, waste gas waste heat air is conveyed to the heat exchanger through the air guide device to exchange heat, heat generated in the fermentation process of vegetable straws in the fermentation bin can exchange heat between the heat exchanger and the air in the oxygenation aeration air inlet pipeline, and the heated air in the oxygenation aeration air inlet pipeline is conveyed to the aerobic fermentation equipment, so that waste gas waste heat is recycled, and subsequent fermentation is facilitated.
According to the waste gas waste heat on-demand recycling device, cold air is heated and then sent to the aerobic fermentation equipment through waste heat recycling, so that the problems of difficult self-starting of the aerobic fermentation equipment, slow temperature rise, high energy consumption of an external heat source and heat waste of the equipment in a complex environment can be solved.
According to the waste gas waste heat on-demand recycling device, the waste gas waste heat on-demand recycling device can be adjusted according to the preset heat demand of the aerobic fermentation equipment, and when the waste heat recycling quantity does not meet the preset demand, the opening of the first flow control valve is adjusted to be gradually increased, and the second flow control valve is closed; when the waste heat recovery quantity is excessive, the opening of the first flow control valve is adjusted to be gradually reduced to be closed, the opening of the second flow control valve is gradually increased, hot gas is turned to a turning gas transmission pipeline, the excess waste heat recovery quantity is turned to an aerobic fermentation aging area, secondary decomposition of fermentation materials is promoted, waste gas waste heat can be utilized as required, and the waste gas waste heat utilization rate is improved.
According to the waste gas waste heat on-demand recycling device, after the odor is treated by the integrated deodorizing device, the waste gas waste heat is conveyed to the gas transmission main pipe through the air guide device, the waste heat recycling control device adjusts the conveying amount of hot gas according to the preset heat demand of the fermentation bin, the hot gas heats cold air in the oxygenation aeration air inlet pipeline through the heat exchanger and then is conveyed into the aerobic fermentation equipment, and the hot gas and the surplus heat after heat exchange enter the aging area, so that the self-starting of aerobic fermentation in a complex environment is simplified, and the energy consumption of a heating part is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a schematic diagram of an on-demand waste heat recovery and utilization device according to one or more embodiments of the present invention;
FIG. 2 is a schematic view of a heat exchanger according to one or more embodiments of the present disclosure;
FIG. 3 is a schematic diagram illustrating the heat exchanger waste heat recovery operation in accordance with one or more embodiments of the present disclosure;
FIG. 4 is a schematic diagram of an on-demand waste heat recovery and utilization device for waste gas in accordance with one or more embodiments of the present invention in conjunction with aerobic fermentation equipment;
FIG. 5 is a flow diagram of waste heat recovery and utilization of exhaust gas according to one or more embodiments of the present disclosure;
In the figure: the device comprises a wind guide device 1, a gas transmission main pipe 2, a heat exchanger 3, a housing 301, a concentric sleeve pipe 302, a U-shaped elbow 303, a heat insulation material 304, a water accumulation disc 305, a condensed water discharge pipe 306, a plugging pipe 307, a first air inlet 308, a first air outlet 309, a second air inlet 310, a second air outlet 311, a waste heat recovery control device 4, a first flow control valve 401, a second flow control valve 402, a 403 direction-changing gas transmission pipeline 403, a5 monitoring element, a 6 aerobic fermentation device, a 7 integrated deodorizing device and an 8 waste gas waste heat recycling device.
The mutual spacing or dimensions are exaggerated for the purpose of showing the positions of the various parts, and the schematic illustrations are used for illustration only.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular forms also are intended to include the plural forms unless the present invention clearly dictates otherwise, and furthermore, it should be understood that when the terms "comprise" and/or "include" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
For convenience of description, the words "upper", "lower", "left" and "right" in the present invention, if they mean only the directions of upper, lower, left and right in correspondence with the drawings themselves, are not limiting in structure, but merely serve to facilitate description of the present invention and simplify description, rather than to indicate or imply that the apparatus or elements 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.
The term "mounted," "connected," "secured," and the like are to be construed broadly as referring to the present invention, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected, can be directly connected or indirectly connected through an intermediate medium, can be internally connected with two elements, or the interaction of two elements, the specific meaning of the terms in the present invention will be understood by those of ordinary skill in the art as the case may be.
In an exemplary embodiment of the present invention, as shown in fig. 1, a device for recycling waste heat of an intensive aerobic fermentation waste gas of vegetable straw on demand is provided, which comprises:
The air guide device 1 is connected with an exhaust port at the top of the integrated deodorizing device 7 and used for changing the movement direction and speed of hot air;
the gas transmission main pipe 2 is connected with the air guide device 1, and is provided with an exhaust port connected with the heat exchanger 3;
the inlet end of the heat exchanger 3 is communicated with the gas transmission main pipe 2, and the outlet end of the heat exchanger is connected to the aging area through a drying pipeline.
Wherein, the integrated deodorizing device 7 is the existing equipment, and can specifically treat odor through a spray tower and an active carbon deodorizing box.
The integrated deodorizing device 7 is connected with the aerobic fermentation equipment 6, odor generated by the aerobic fermentation equipment 6 enters the integrated deodorizing device 7 for deodorizing, an exhaust port is arranged at the top of the integrated deodorizing device and is connected with the air guide device 1, and the air guide device 1 conveys exhaust waste heat of exhaust waste gas to the gas transmission main pipe 2. The air guide 1 is an existing device and will not be described here.
The gas transmission main pipe 2 is connected with the waste heat recovery control device 4, the waste heat recovery control device 4 comprises a first flow control valve 401 arranged on the gas transmission main pipe 2, and the pressure and the power of the gas flow in the pipeline of the gas transmission main pipe 2 are conveniently controlled through the first flow control valve 401; the first flow control valve 401 is connected to a controller, and the opening and closing and the opening degree of the first flow control valve are controlled by the controller.
The waste heat recovery control device 4 further comprises a direction-changing gas transmission pipeline 403, the direction-changing gas transmission pipeline 403 is communicated with the gas transmission main pipe 2, and the outlet end of the direction-changing gas transmission pipeline 403 is connected to the aging area through a drying pipeline; a second flow control valve 402 is arranged on the direction-changing gas pipeline 403, and the air flow can be controlled to enter the direction-changing gas pipeline through the second flow control valve; the second flow control valve 402 is connected to a controller, and the opening and closing and the opening degree of the second flow control valve are controlled by the controller.
The front end of the air inlet of the heat exchanger 3 is also provided with a monitoring element 5 which comprises a temperature sensor and a humidity sensor for measuring the temperature and humidity data of hot air in real time. The monitoring element is connected with the controller.
Therein, as shown in fig. 2, the heat exchanger 3 comprises a housing 301, a concentric sleeve 302 and a U-bend 303. The housing 301 has an interior space for accommodating the concentric sleeve and the U-bend; the inner wall of the housing 301 is filled with a thermal insulation material 304.
The top of the housing 301 is provided with a first air inlet 308 which is connected with the gas transmission main pipe 2 and used for collecting heat discharged by the exhaust port of the integrated deodorizing device; the bottom of the housing 301 is provided with a first air outlet 309 for discharging air; the first air outlet 309 is connected to a drying duct for the exhaust air to enter the aging zone.
The second air inlet 310 is arranged at the upper part of one side of the housing 301 for cold air to enter, the second air outlet 311 is arranged at the lower part of the other side of the housing 301 for discharging air.
The concentric sleeve 302 includes an outer tube and an inner tube that are concentrically disposed, the outer tube and the inner tube are straight tubes, the diameters of the outer tube and the inner tube are different, the inner tube is sleeved in the outer tube, and two ends of the inner tube extend out of the outer tube.
The concentric sleeves are sequentially arranged in the housing from top to bottom, the outer pipeline of the concentric sleeve 302 at the top is communicated with the first air inlet 308 of the housing, the outer pipelines of the upper concentric sleeve and the lower concentric sleeve are communicated, and the outer pipeline of the concentric sleeve 302 at the bottom is communicated with the first air outlet 309 of the housing;
The inner pipes of the adjacent concentric sleeves are communicated through a U-shaped elbow 303, the inner pipe of the concentric sleeve at the top is communicated with a second air inlet 310, and the inner pipe of the concentric sleeve at the bottom is communicated with a second air outlet 311.
In the concentric sleeve, the outer pipelines of a plurality of concentric sleeves are connected into an S shape, the inner pipelines of a plurality of concentric sleeves are connected into an S shape, the outer pipelines are used as waste gas waste heat air inlet pipelines, the inner pipelines are used as oxygen-increasing aeration air inlet pipelines, heat is absorbed to heat cold air, heat exchange cavity annular gap hot gas is formed between the outer pipelines and the inner pipelines, and the traveling direction of the hot gas of the outer pipelines is the same as that of the air of the inner pipelines.
A concave water accumulation disc 305 is arranged near a first air outlet 309 at the tail end of an outer pipeline of the concentric sleeve, the water accumulation disc 305 is fixed at the bottom of the outer sleeve of the concentric sleeve positioned at the bottom, and a plurality of water accumulation discs 305 can be arranged according to the humidity of hot air; the side wall of the water accumulation tray 305 is connected with a condensed water drain pipe 306, and the design position of the condensed water drain pipe is not higher than that of the side wall of the water accumulation tray. The outlet of the condensed water drain pipe is sealed by a plugging pipe 307 with external threads, and the condensed water can be periodically discharged.
The heat exchangers can increase and decrease the number of pipe sections of the concentric sleeve according to the heat required by the set ventilation of the intensive aerobic fermentation of the vegetable straw, and the heat exchangers can be arranged in a plurality and evenly spaced around the side surface of the oxygenation aeration component of the intensive aerobic fermentation equipment 6.
In order to facilitate the accelerated discharge of condensed water of the heat exchanger, the orifice of the concentric sleeve is downwards arranged at a slope of 1% -3%, the concentric sleeve is downwards inclined along the air flow advancing direction, the upper concentric sleeve and the lower concentric sleeve connected by the U-shaped elbow are in mirror symmetry, and the two spaced concentric sleeves are in parallel relation, so that the condensed water is conveniently discharged.
As shown in fig. 4, the waste gas waste heat recycling device 8 is connected with the integrated deodorizing device 7 through a pipeline, the waste gas waste heat recycling device 8 is also connected with the aerobic fermentation equipment 6 through a pipeline, the aerobic fermentation equipment 6 is provided with a fermentation bin, and the fermentation bin is connected with the integrated deodorizing device 7 through a pipeline; it should be noted that, the aerobic fermentation device 6 is an aerobic fermentation unit in a large-scale vegetable straw intensive aerobic fermentation comprehensive treatment device and method according to the chinese patent application No. 202410260849.6, and the structure of the aerobic fermentation device is not improved in the present invention and is not described here.
The fermentation bin of the aerobic fermentation equipment 6 is provided with an oxygenation aeration component, the second air inlet 310 of the inner pipeline is used for allowing external cold air to enter, the second air outlet 311 of the inner pipeline of the concentric sleeve pipe of the heat exchanger is connected with the oxygenation aeration component through the oxygenation aeration pipeline, the vegetable straw intensification aerobic fermentation equipment 6 is used for deodorizing heat and odor generated in the aerobic fermentation process, waste gas waste heat enters the outer pipeline of the concentric sleeve pipe of the heat exchanger 3 through the air guide device 1 and the gas transmission main pipe 2 after being deodorized by the integrated deodorizing device 7, the cold air enters the inner pipeline of the concentric sleeve pipe of the heat exchanger 3, the gas of the inner pipeline and the outer pipeline exchanges heat, the cold air in the inner pipeline is heated, and the heated air is conveyed to the oxygenation component of the aerobic fermentation equipment 6 through the oxygenation aeration pipeline for oxygenation aeration, so that the waste gas waste heat is reutilized, and the subsequent fermentation is facilitated.
As shown in fig. 5, the aerobic fermentation equipment 6 is connected with an aging zone, and a fermentation product of the aerobic fermentation equipment 6 enters the aging zone; the waste gas waste heat recycling device is adjusted according to the preset heat demand of the aerobic fermentation equipment 6.
Specifically, in order to realize the on-demand utilization of the waste gas waste heat, when the waste heat recovery amount does not meet the preset demand, the opening of the first flow control valve 401 of the manual adjustment waste heat recovery control device 4 is gradually increased, and the second flow control valve 402 is closed; when the waste heat recovery quantity is excessive, the opening degree of the first flow control valve of the manual adjustment waste heat recovery control device is gradually reduced to be closed, the opening degree of the second flow control valve 402 is gradually increased, hot gas is diverted to the diversion gas pipeline 403, the excess waste heat recovery quantity is diverted to the aerobic fermentation aging zone, and secondary decomposition of fermentation materials is promoted.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
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| CN202410359738.0A CN118439897B (en) | 2024-03-27 | 2024-03-27 | A device for recycling waste heat from intensive aerobic fermentation of vegetable straw on demand |
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| CN202410359738.0A CN118439897B (en) | 2024-03-27 | 2024-03-27 | A device for recycling waste heat from intensive aerobic fermentation of vegetable straw on demand |
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| CN118439897B true CN118439897B (en) | 2024-11-26 |
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| CN213835091U (en) * | 2020-08-07 | 2021-07-30 | 浙江延杭智能科技有限公司 | Take waste heat recovery and automatic aeration's kitchen garbage aerobic fermentation device |
| CN113816775A (en) * | 2020-06-19 | 2021-12-21 | 江苏省家禽科学研究所 | A waste treatment device |
| CN113816783A (en) * | 2021-06-24 | 2021-12-21 | 上海小柴神环保科技有限公司 | High-efficiency vertical high-temperature aerobic fermentation equipment |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104945032A (en) * | 2015-06-25 | 2015-09-30 | 广东省农业科学院农业资源与环境研究所 | Odor internal circulation treatment composting system and odor internal circulation treatment composting process |
| CN113816775A (en) * | 2020-06-19 | 2021-12-21 | 江苏省家禽科学研究所 | A waste treatment device |
| CN213835091U (en) * | 2020-08-07 | 2021-07-30 | 浙江延杭智能科技有限公司 | Take waste heat recovery and automatic aeration's kitchen garbage aerobic fermentation device |
| CN113816783A (en) * | 2021-06-24 | 2021-12-21 | 上海小柴神环保科技有限公司 | High-efficiency vertical high-temperature aerobic fermentation equipment |
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