CN205420387U - System for with wheat straw anaerobic fermentation marsh gas - Google Patents
System for with wheat straw anaerobic fermentation marsh gas Download PDFInfo
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- CN205420387U CN205420387U CN201620194633.5U CN201620194633U CN205420387U CN 205420387 U CN205420387 U CN 205420387U CN 201620194633 U CN201620194633 U CN 201620194633U CN 205420387 U CN205420387 U CN 205420387U
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- 239000010902 straw Substances 0.000 title claims abstract description 56
- 241000209140 Triticum Species 0.000 title claims abstract description 46
- 235000021307 Triticum Nutrition 0.000 title claims abstract description 46
- 238000000855 fermentation Methods 0.000 title claims abstract description 44
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title abstract 6
- 239000007788 liquid Substances 0.000 claims abstract description 64
- 230000004151 fermentation Effects 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000005325 percolation Methods 0.000 claims description 36
- 230000000696 methanogenic effect Effects 0.000 claims description 25
- 239000002253 acid Substances 0.000 claims description 23
- 238000012856 packing Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000006731 degradation reaction Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 2
- 239000012779 reinforcing material Substances 0.000 abstract 1
- 241000894006 Bacteria Species 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000011026 diafiltration Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000002053 acidogenic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
技术领域technical field
本实用新型属于生物工程技术领域，具体地说，涉及一种用小麦秸秆厌氧发酵沼气的系统。The utility model belongs to the technical field of bioengineering, in particular to a system for anaerobically fermenting biogas with wheat straw.
背景技术Background technique
随着社会的进步，科技的发展，人们对各种能源的需求量越来越大，为了保证自然界的平衡，人们开始推广使用绿色能源，沼气作为一种可再生的绿色能源被越来越多的人使用。With the progress of society and the development of science and technology, people's demand for various energy sources is increasing. In order to ensure the balance of nature, people begin to promote the use of green energy. As a renewable green energy, biogas is being used more and more people use.
现有的小麦秸秆发酵通常面临两大问题:一是秸秆中木质素含量高，难以被微生物降解从而导致产气过程缓慢，产气量低；二是秸秆的密度较小，容易导致液面结壳，影响沼气发酵，并且由于固体浓度较低，废料处理利用比较困难；现有的小麦秸秆发酵在发酵之前没有对秸秆进行粉碎，使得发酵时间增长，产率较低；现有的小麦秸秆发酵对秸秆物料只进行一次发酵，产生的发酵渣即被丢弃，造成秸秆的发酵不完全，造成物料的浪费。The existing wheat straw fermentation usually faces two major problems: one is that the lignin content in the straw is high, and it is difficult to be degraded by microorganisms, resulting in a slow gas production process and low gas production; the other is that the straw has a low density, which easily leads to crusting , affecting biogas fermentation, and because of the low solid concentration, waste treatment and utilization are difficult; the existing wheat straw fermentation does not crush the straw before fermentation, which makes the fermentation time longer and the yield is low; the existing wheat straw fermentation is harmful to The straw material is only fermented once, and the fermented slag produced is discarded, resulting in incomplete fermentation of the straw and waste of materials.
因此，有必要对现有的用小麦秸秆厌氧发酵沼气系统进行改进，使得用小麦秸秆厌氧发酵沼气系统结构完善，产气率较高。Therefore, it is necessary to improve the existing anaerobic fermentation biogas system with wheat straw, so that the structure of the anaerobic fermentation biogas system with wheat straw is perfect and the gas production rate is high.
发明内容Contents of the invention
为了克服背景技术中存在的不足，本实用新型提供了一种用小麦秸秆厌氧发酵沼气的系统，能够实现小麦秸秆的高浓度发酵，并且无上浮结壳现象，降解充分，整个过程实现液体循环利用；在发酵之前将秸秆进行粉碎，减少秸秆的粒度，使得秸秆物料和沼液接触更完全，提高产气率；能够将小麦秸秆进行多次发酵，增强物料的使用率。In order to overcome the deficiencies in the background technology, the utility model provides a system for anaerobic fermentation of biogas with wheat straw, which can realize high-concentration fermentation of wheat straw, and there is no floating crusting phenomenon, the degradation is sufficient, and the whole process realizes liquid circulation Utilization; before fermentation, the straw is crushed to reduce the particle size of the straw, so that the contact between the straw material and the biogas slurry is more complete, and the gas production rate is improved; the wheat straw can be fermented multiple times to increase the utilization rate of the material.
为达到上述目的，本实用新型是按如下技术方案实施的：In order to achieve the above object, the utility model is implemented according to the following technical solutions:
所述的用小麦秸秆厌氧发酵沼气的系统包括进料装置和发酵装置，所述的进料装置包括进料斗、处理仓和出料斗，所述的处理仓内安装有破碎刀，处理仓底部中心位置设置有旋转轴，所述破碎刀均安装于旋转轴上；The system for anaerobically fermenting biogas with wheat straw includes a feed device and a fermentation device, the feed device includes a feed hopper, a processing bin and a discharge hopper, a crushing knife is installed in the processing bin, and the processing bin A rotating shaft is provided at the center of the bottom, and the crushing knives are all mounted on the rotating shaft;
所述的发酵装置包括发酵罐和储罐，发酵罐内腔由隔板分隔成上下两个独立的空间，上面是作为产酸相的渗滤床，下面是作为产甲烷相的固定床；在渗滤床顶部设置渗滤床进液口和出气口，渗滤床进液口连接有喷头，渗滤床的侧面上部设置有与进料装置的出料斗连接的进料口，渗滤床侧面下部设置有出料口和渗滤床出液口，所述的出料口上设置有带有循环泵的循环管道与发酵罐顶部侧壁相连；在固定床底部设置固定床进液口，下部设置筛板，上部设置固定床出液口、固定床出气口和填料进口；储罐上设置有储罐出液口、储罐进液口和储罐出气口；渗滤床出液口与固定床进液口连接，固定床出液口流出的液体通过储罐进液口进入储罐中储存，储罐出液口通过回用泵与渗滤床进液口连通。The fermentation device includes a fermenter and a storage tank, and the inner chamber of the fermenter is divided into two independent spaces up and down by a partition, the upper part is a percolation bed as an acid-producing phase, and the lower part is a fixed bed as a methanogenic phase; The top of the percolation bed is provided with a liquid inlet and an air outlet of the percolation bed. The liquid inlet of the percolation bed is connected with a nozzle. The lower part is provided with a material outlet and a percolation bed outlet, and the outlet is provided with a circulation pipeline with a circulation pump connected to the top side wall of the fermentation tank; a fixed bed liquid inlet is provided at the bottom of the fixed bed, and the lower part is provided with The sieve plate is equipped with a fixed bed liquid outlet, a fixed bed gas outlet and a packing inlet on the upper part; a storage tank liquid outlet, a storage tank liquid inlet and a storage tank gas outlet are arranged on the storage tank; the percolation bed liquid outlet and the fixed bed The liquid inlet is connected, and the liquid flowing out of the liquid outlet of the fixed bed enters the storage tank through the liquid inlet of the storage tank for storage, and the liquid outlet of the storage tank is connected with the liquid inlet of the percolation bed through a recycling pump.
进一步，所述的出料斗为无轴螺旋输送器。Furthermore, the said discharge hopper is a shaftless screw conveyor.
进一步，所述的渗滤床出液口上设有滤网。Further, a filter screen is provided on the liquid outlet of the percolation bed.
进一步，所述的筛板上均匀分布5mm的筛孔。Further, 5mm sieve holes are evenly distributed on the sieve plate.
进一步，所述的固定床外壁上装有加热夹套。Further, a heating jacket is installed on the outer wall of the fixed bed.
进一步，所述的循环管道与出料口为可拆卸连接。Further, the circulation pipeline is detachably connected to the outlet.
本实用新型的有益效果：The beneficial effects of the utility model:
处理仓对小麦秸秆进料前进行破碎处理，使得小麦秸秆破碎到一定的尺寸，增大了发酵过程中小麦秸秆与沼液的接触面积，使得发酵更完全；由于出料斗是无轴螺旋输送器，小麦秸秆不易堵塞；将产酸和产甲烷分开在不同The processing bin crushes the wheat straw before feeding, so that the wheat straw is crushed to a certain size, which increases the contact area between the wheat straw and the biogas slurry during the fermentation process, and makes the fermentation more complete; since the discharge hopper is a shaftless screw conveyor , wheat straw is not easy to clog; separate acid production and methanogenesis in different
的区域，使产酸和产甲烷的菌种分别达到最佳的发酵效果。产酸相采用渗滤床工艺实现物料的高浓度发酵（20%以上），通过顶部液体的均匀喷洒与物料充分接触，并逐渐形成酸液流出，产甲烷相采用固定床工艺，利用填料（纤维球）固定化产甲烷菌，然后酸液从底部经筛板进入产甲烷相中进行产甲烷反应，此后又将产甲烷相流出液回流至产酸相中，不但避免了菌种的流失，而且使得整个体系中的缓冲能力得到提高；渗滤床出液口上设有滤网，使得酸液流出时不宜将渗滤床出液口堵塞；出料口上设置有带有循环泵的循环管道与发酵罐顶部侧壁相连，循环管道与出料口为可拆卸连接，可将小麦秸秆进行多次发酵，增强物料的利用率。area, so that the acid-producing and methanogenic strains can achieve the best fermentation effects respectively. The acid-producing phase adopts the percolation bed process to realize the high-concentration fermentation of the material (above 20%), fully contacts the material through the uniform spraying of the top liquid, and gradually forms the outflow of acid liquid, and the methanogenic phase adopts the fixed-bed process, using filler (fiber ball) to immobilize methanogenic bacteria, and then the acid solution enters the methanogenic phase from the bottom through the sieve plate to carry out the methanogenic reaction, and then the effluent of the methanogenic phase is returned to the acid-producing phase, which not only avoids the loss of bacteria, but also The buffer capacity in the whole system is improved; the outlet of the percolation bed is equipped with a filter screen, so that it is not suitable to block the outlet of the percolation bed when the acid solution flows out; the outlet is provided with a circulation pipeline with a circulation pump and fermentation The top and side walls of the tank are connected, and the circulation pipe and the discharge port are detachably connected, so that the wheat straw can be fermented multiple times to enhance the utilization rate of the material.
附图说明Description of drawings
图1为本实用新型结构示意图。Fig. 1 is the structural representation of the utility model.
图中，1-进料斗、2-处理仓、3-出料斗、4-破碎刀、5-旋轴轴、6-发酵罐、7-储罐、8-隔板、9-渗滤床、10-固定床、11-渗滤床进液口、12-出气口、13-喷头、14-进料口、15-出料口、16-渗滤床出液口、17-循环泵、18-循环管道、19-固定床进液口、20-筛板、21-固定床出液口、22-固定床出气口、23-填料进口、24-储罐出液口、25-储罐进液口、26-储罐出气口、27-回用泵、28-滤网、29-加热夹套。In the figure, 1-feed hopper, 2-processing bin, 3-outlet hopper, 4-crushing knife, 5-rotating shaft, 6-fermentation tank, 7-storage tank, 8-baffle, 9-diafiltration bed , 10-fixed bed, 11-infiltration bed liquid inlet, 12-gas outlet, 13-nozzle, 14-feed inlet, 15-material outlet, 16-diafiltration bed liquid outlet, 17-circulation pump, 18-Circulation pipeline, 19-Fixed bed liquid inlet, 20-Sieve plate, 21-Fixed bed liquid outlet, 22-Fixed bed gas outlet, 23-Packing inlet, 24-Storage tank liquid outlet, 25-Storage tank Liquid inlet, 26-tank outlet, 27-reuse pump, 28-filter, 29-heating jacket.
具体实施方式detailed description
为了使本实用新型的目的、技术方案和有益效果更加清楚，下面将结合附图，对本实用新型的优选实施例进行详细的说明，以方便技术人员理解。In order to make the purpose, technical solutions and beneficial effects of the present utility model clearer, the preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings, so as to facilitate the understanding of technical personnel.
如图1所示，所述的用小麦秸秆厌氧发酵沼气的系统包括进料装置和发酵装置，所述的进料装置包括进料斗1、处理仓2和出料斗3，出料斗3为无轴螺旋输送器，所述的处理仓2内安装有破碎刀4，处理仓2底部中心位置设置有旋转轴5，所述破碎刀4均安装于旋转轴5上，处理仓2对小麦秸秆进料前进行破碎处理，使得小麦秸秆破碎到一定的尺寸，增大了发酵过程中小麦秸秆与沼液的接触面积，使得发酵更完全；由于出料斗3是无轴螺旋输送器，小麦秸秆不易堵塞。As shown in Figure 1, the described system of anaerobically fermenting biogas with wheat straw comprises a feed device and a fermentation device, and the described feed device includes a feed hopper 1, a treatment bin 2 and a discharge hopper 3, and the discharge hopper 3 is A shaftless screw conveyor, a crushing knife 4 is installed in the processing bin 2, and a rotating shaft 5 is arranged at the center of the bottom of the processing bin 2, and the crushing knives 4 are all installed on the rotating shaft 5, and the processing bin 2 has a pair of wheat straw Crushing treatment is carried out before feeding, so that the wheat straw is crushed to a certain size, which increases the contact area between the wheat straw and the biogas slurry during the fermentation process, and makes the fermentation more complete; since the discharge hopper 3 is a shaftless screw conveyor, the wheat straw is not easily clogged.
所述的发酵装置包括发酵罐6和储罐7，发酵罐6内腔由隔板8分隔成上下两个独立的空间，上面是作为产酸相的渗滤床9，下面是作为产甲烷相的固定床10；在渗滤床9顶部设置渗滤床进液口11和出气口12，渗滤床进液口11连接有喷头13，渗滤床9的侧面上部设置有与进料装置的出料斗3连接的进料口14，渗滤床9侧面下部设置有出料口15和渗滤床出液口16，渗滤床出液口16上设有滤网28，在固定床10底部设置固定床进液口19，下部设置筛板20，筛板20上均匀分布5mm的筛孔，上部设置固定床出液口21、固定床出气口22和填料进口23；储罐7上设置有储罐出液口24、储罐进液口25和储罐出气口26；渗滤床出液口16与固定床进液口19连接，固定床出液口22流出的液体通过储罐进液口25进入储罐7中储存，将产酸和产甲烷分开在不同的区域，使产酸和产甲烷的菌种分别达到最佳的发酵效果。产酸相采用渗滤床9工艺实现物料的高浓度发酵（20%以上），通过顶部液体的均匀喷洒与物料充分接触，并逐渐形成酸液流出，产甲烷相采用固定床工艺，利用填料（纤维球）固定化产甲烷菌，然后酸液从底部经筛板20进入产甲烷相中进行产甲烷反应，此后又将产甲烷相流出液回流至产酸相中，不但避免了菌种的流失，而且使得整个体系中的缓冲能力得到提高。The fermentation device includes a fermenter 6 and a storage tank 7, the fermenter 6 inner chamber is divided into two independent spaces up and down by a partition 8, the top is the percolation bed 9 as the acid-producing phase, and the following is the methanogenic phase. A fixed bed 10; a percolation bed liquid inlet 11 and an air outlet 12 are arranged on the top of the percolation bed 9, and the percolation bed liquid inlet 11 is connected with a nozzle 13, and the upper side of the percolation bed 9 is provided with a connection with the feeding device The feed port 14 connected to the discharge hopper 3, the lower part of the side of the percolation bed 9 is provided with a discharge port 15 and a percolation bed liquid outlet 16, and a filter screen 28 is arranged on the percolation bed liquid discharge port 16, and at the bottom of the fixed bed 10 A fixed bed liquid inlet 19 is provided, a sieve plate 20 is provided at the lower part, sieve holes of 5 mm are evenly distributed on the sieve plate 20, a fixed bed liquid outlet 21, a fixed bed gas outlet 22 and a packing inlet 23 are arranged at the upper part; the storage tank 7 is provided with The liquid outlet 24 of the storage tank, the liquid inlet 25 of the storage tank and the gas outlet 26 of the storage tank; the liquid outlet 16 of the percolation bed is connected with the liquid inlet 19 of the fixed bed, and the liquid flowing out of the liquid outlet 22 of the fixed bed enters the liquid through the storage tank Port 25 enters storage tank 7 for storage, and separates acid-producing and methanogenic strains in different areas, so that the acid-producing and methanogenic strains can achieve the best fermentation effects respectively. The acid-producing phase adopts the percolation bed 9 process to realize the high-concentration fermentation of the material (above 20%), fully contacts with the material through the uniform spraying of the top liquid, and gradually forms the outflow of acid liquid, and the methanogenic phase adopts the fixed-bed process, using packing ( fiber ball) to immobilize the methanogenic bacteria, and then the acid solution enters the methanogenic phase from the bottom through the sieve plate 20 to carry out the methanogenic reaction, and then returns the effluent of the methanogenic phase to the acid-producing phase, which not only avoids the loss of bacteria , and the buffering capacity of the whole system is improved.
储罐出液口24通过回用泵27与渗滤床进液口11连通，固定床10外壁上装有加热夹套29，能够使得发酵过程能够保持在较适宜的温度。The liquid outlet 24 of the storage tank communicates with the liquid inlet 11 of the percolation bed through a recycling pump 27, and a heating jacket 29 is installed on the outer wall of the fixed bed 10 to keep the fermentation process at a suitable temperature.
所述的出料口15上设置有带有循环泵17的循环管道18与发酵罐6顶部侧壁相连，可将小麦秸秆进行多次发酵，增强物料的利用率，所述的循环管道18与出料口15为可拆卸连接，当小麦秸秆完全发酵完成后，将循环管道18从出料口15拆卸，使得小麦秸秆从出料口15排出。The discharge port 15 is provided with a circulation pipeline 18 with a circulation pump 17 connected to the top side wall of the fermenter 6, so that the wheat straw can be fermented multiple times to enhance the utilization rate of the material. The circulation pipeline 18 and the The discharge port 15 is detachably connected, and when the wheat straw is fully fermented, the circulation pipeline 18 is disassembled from the discharge port 15, so that the wheat straw is discharged from the discharge port 15.
本实用新型的工作过程：Working process of the present utility model:
将小麦秸秆从进料仓1进入处理仓2，经过破碎刀3破碎，使原料达到破碎、混合、稳定，然后由无轴螺旋输送器输送到从发酵罐6的进料口14投入上层渗滤床9中，附着有产甲烷菌的纤维球填料从填料进口23投入下层固定床10中，储罐7中的液体经过渗滤床进液口16通过喷头13均匀喷洒至物料上，料液通过渗滤与小麦秸秆接触进而产酸发酵并产生挥发性有机酸，最终从渗滤床出液口16流出，产酸相产生的部分气体由出气口12收集。从上层流出的渗滤液经底部固定床进液口19直接进入下层固定床10，经过附着产甲烷菌的填料层从固定床出液口21流至储罐7，部分带出的气体由储罐7上方的储罐出气口26回收，大部分气体经由固定床出气口22收集。小麦秸秆发酵一定的时间后，打开循环泵17将小麦秸秆再次进行发酵，当小麦秸秆完全发酵完成后，将循环管道18从出料口15拆卸，使得小麦秸秆从出料口15排出。The wheat straw enters the processing bin 2 from the feeding bin 1, and is crushed by the crushing knife 3, so that the raw materials can be crushed, mixed and stabilized, and then transported by the shaftless screw conveyor to the upper layer of percolation from the feeding port 14 of the fermenter 6 In the bed 9, the fiber ball filler with methanogenic bacteria attached is put into the lower fixed bed 10 from the filler inlet 23, and the liquid in the storage tank 7 is evenly sprayed onto the material through the liquid inlet 16 of the percolation bed through the nozzle 13, and the material liquid passes through The diafiltration contacts with the wheat stalks for acidogenic fermentation and produces volatile organic acids, which finally flow out from the liquid outlet 16 of the percolation bed, and part of the gas generated in the acidogenic phase is collected by the gas outlet 12 . The leachate flowing out from the upper layer directly enters the lower fixed bed 10 through the bottom fixed bed liquid inlet 19, flows through the packing layer attached to the methanogenic bacteria from the fixed bed liquid outlet 21 to the storage tank 7, and part of the gas carried out is discharged from the storage tank. Gas outlet 26 of the storage tank above 7 is recovered, and most of the gas is collected through the gas outlet 22 of the fixed bed. After the wheat straw is fermented for a certain period of time, the circulation pump 17 is turned on to ferment the wheat straw again. When the wheat straw is fully fermented, the circulation pipe 18 is disassembled from the discharge port 15 so that the wheat straw is discharged from the discharge port 15.
本实用新型处理仓对小麦秸秆进料前进行破碎处理，使得小麦秸秆破碎到一定的尺寸，增大了发酵过程中小麦秸秆与沼液的接触面积，使得发酵更完全；由于出料斗是无轴螺旋输送器，小麦秸秆不易堵塞；将产酸和产甲烷分开在不同的区域，使产酸和产甲烷的菌种分别达到最佳的发酵效果。产酸相采用渗滤床工艺实现物料的高浓度发酵（20%以上），通过顶部液体的均匀喷洒与物料充分接触，并逐渐形成酸液流出，产甲烷相采用固定床工艺，利用填料（纤维球）固定化产甲烷菌，然后酸液从底部经筛板进入产甲烷相中进行产甲烷反应，此后又将产甲烷相流出液回流至产酸相中，不但避免了菌种的流失，而且使得整个体系中的缓冲能力得到提高；渗滤床出液口上设有滤网，使得酸液流出时不宜将渗滤床出液口堵塞；出料口上设置有带有循环泵的循环管道与发酵罐顶部侧壁相连，循环管道与出料口为可拆卸连接，可将小麦秸秆进行多次发酵，增强物料的利用率。The treatment bin of the utility model carries out crushing treatment on the wheat straw before feeding, so that the wheat straw is crushed to a certain size, which increases the contact area between the wheat straw and the biogas slurry in the fermentation process, and makes the fermentation more complete; since the discharge hopper is shaftless The screw conveyor is not easy to be blocked by wheat straw; the acid-producing and methanogenic bacteria are separated in different areas, so that the acid-producing and methanogenic bacteria can achieve the best fermentation effect respectively. The acid-producing phase adopts the percolation bed process to realize the high-concentration fermentation of the material (above 20%), fully contacts the material through the uniform spraying of the top liquid, and gradually forms the outflow of acid liquid, and the methanogenic phase adopts the fixed-bed process, using filler (fiber ball) to immobilize methanogenic bacteria, and then the acid solution enters the methanogenic phase from the bottom through the sieve plate to carry out the methanogenic reaction, and then the effluent of the methanogenic phase is returned to the acid-producing phase, which not only avoids the loss of bacteria, but also The buffer capacity in the whole system is improved; the outlet of the percolation bed is equipped with a filter screen, so that it is not suitable to block the outlet of the percolation bed when the acid solution flows out; the outlet is provided with a circulation pipeline with a circulation pump and fermentation The top and side walls of the tank are connected, and the circulation pipe and the discharge port are detachably connected, so that the wheat straw can be fermented multiple times to enhance the utilization rate of the material.
最后说明的是，以上优选实施例仅用以说明本实用新型的技术方案而非限制，尽管通过上述优选实施例已经对本实用新型进行了详细的描述，但本领域技术人员应当理解，可以在形式上和细节上对其作出各种各样的改变，而不偏离本实用新型权利要求书所限定的范围。Finally, it is noted that the above preferred embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that it can be described in the form Various changes can be made in the above and in the details without departing from the scope defined by the claims of the present invention.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106929410A (en) * | 2017-04-05 | 2017-07-07 | 华南理工大学 | A kind of cities and towns solid waste reactor for producing acid phase with diphasic anaerobic digestion |
| CN109355167A (en) * | 2018-12-06 | 2019-02-19 | 四川绿盼环保科技有限公司 | A kind of corn stover crushing installation for fermenting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106929410A (en) * | 2017-04-05 | 2017-07-07 | 华南理工大学 | A kind of cities and towns solid waste reactor for producing acid phase with diphasic anaerobic digestion |
| CN109355167A (en) * | 2018-12-06 | 2019-02-19 | 四川绿盼环保科技有限公司 | A kind of corn stover crushing installation for fermenting |
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