CN207418730U - A kind of vertical dry-process installation for fermenting - Google Patents

Abstract

The utility model relates to a vertical dry fermentation device, which belongs to the technical field of dry biogas fermentation; the vertical dry fermentation device includes a fermentation tank, a heat exchange device and a stirring device; feed port, biogas outlet, the lower part is provided with a suction port, and the top of the fermenter is provided with an elastic membrane. The heat exchange device includes a solar water heater, a fermentation liquid circulation pump, a heat exchanger, a circulation water pump and a water storage tank. The stirring device includes a hollow shaft, a hollow paddle, an upper shaft sleeve, and a bottom bearing; the utility model realizes the circulation heating of the biogas slurry in the fermentation tank through a solar water heater, and the biogas slurry sprayed from the nozzle is in the reaction reaction while the biogas slurry is being circulated and heated. Under the action of force, the hollow shaft and the hollow blades are driven to rotate to realize the stirring in the fermenter. The setting of the elastic membrane can predict the remaining amount of biogas in the fermenter. The vertical dry fermentation device is energy-saving, environmentally friendly, safe in production and high in fermentation efficiency. , high gas production rate.

Description

A vertical dry fermentation device

technical field

The utility model belongs to the technical field of dry biogas fermentation, in particular to a vertical dry fermentation device.

Background technique

The fermentation device plays a very key role in the biogas project, and it is also the part with the largest investment in the project. Anaerobic fermentation is divided into two types: dry fermentation and wet fermentation. Wet fermentation means that the solid content of the material is usually less than 10%. Because the process is relatively mature, the material has good fluidity and is easy to mix evenly, solid is widely used, but its water content is relatively large, and heating energy consumption is high. Compared with the process of dry fermentation, a larger capacity fermenter is required. As a result, the project investment is increased. Moreover, the water consumption of wet fermentation is relatively large, the amount of product after fermentation is large, and the downstream dehydration and water treatment process has a heavy burden. Therefore, the operating cost will also increase. The efficiency is generally 15-40%, and the equivalent dry material is processed. The dry fermentation process requires a smaller tank volume than the wet process, and can save a lot of energy and water consumption, and make the downstream treatment process a burden. Greatly reduce, thereby improving material handling rate and handling capacity.

However, the existing dry fermentation device has a low fermentation temperature and low fermentation efficiency. In order to increase the fermentation temperature, electric heating or coal heating is conventionally used. This method consumes a lot of energy and causes pollution to the environment; the existing dry fermentation device The remaining amount of biogas in the fermentation tank is unpredictable, which poses a safety hazard to operators.

Therefore, it is necessary to improve the existing dry fermentation device, so that the structure of the dry fermentation device is more complete, the material reaction is complete, the gas production efficiency is high, and it is safe and reliable.

Contents of the invention

In order to overcome the problems in the background technology, the utility model provides a vertical dry fermentation device.

The utility model is implemented according to the following technical scheme:

The vertical dry fermentation device includes a fermenter, a heat exchange device and a stirring device; the upper part of the fermenter is provided with a feed inlet and a biogas outlet, and the lower part is provided with a suction port, and a filter layer is provided in the suction port , the top of the fermenter is provided with an elastic membrane, which is sealed and connected to the dry-process fermentation chamber and communicated through a through hole; the heat exchange device includes a solar water heater, a fermentation liquid circulation pump, a heat exchanger, a circulation water pump and a water storage tank , the heat exchanger is provided with a biogas slurry inlet, a biogas slurry outlet, a hot water inlet and a hot water outlet, the suction port is connected to the biogas slurry inlet through a pipeline, and the biogas slurry outlet is connected to the fermentation liquid through a pipeline The inlet of the circulating pump is connected, the hot water inlet is connected to the outlet of the solar water heater through the pipeline, the hot water outlet is connected to the upper part of the water storage tank through the pipeline, the lower part of the water storage tank is connected to the inlet of the circulating water pump through the pipeline, and the outlet of the circulating water pump is connected through the pipeline Connected with the inlet of the solar water heater, the water storage tank is provided with a water supply port and a drain port; the stirring device includes a hollow shaft, a hollow paddle, an upper bushing, and a bottom bearing, and the hollow shaft is installed vertically on the fermenter center, the top of the hollow shaft is rotatably connected to the upper shaft sleeve fixed on the top of the fermenter, the upper shaft sleeve is provided with a water pipe joint and connected to the outlet of the fermentation broth circulation pump through the pipeline, and the bottom end of the hollow shaft is fixed to the bottom of the fermenter The bottom bearing on the top is rotationally connected, and a hollow paddle is installed horizontally on the hollow shaft. Nozzles are provided on the hollow paddles. The nozzles on the two symmetrical hollow paddles are in opposite directions; all pipelines are equipped with valves.

Further, the solar water heater is fixed on the top of the fermentation tank through a bracket.

Further, the elastic membrane is sealed and connected with the fermenter through a sealing ring.

Further, the nozzle and the hollow paddle form an angle of 60-75 degrees.

Beneficial effects of the utility model: Circular heating of the biogas slurry in the fermentation tank is realized by the solar water heater, which ensures a suitable fermentation temperature in the fermentation tank, makes full use of clean energy, and is environmentally friendly; while the biogas slurry is cyclically heated, the The biogas slurry drives the hollow shaft and the hollow paddles to rotate under the action of the reaction force to realize the stirring in the fermentation tank; the setting of the elastic membrane can predict the remaining amount of biogas in the fermentation tank and ensure the safety of the operators; the utility model is energy-saving and environment-friendly. The production is safe, the fermentation efficiency is good, and the gas production rate is high.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the schematic diagram of hollow paddle;

In the figure, 1-fermentation tank, 2-feed inlet, 3-elastic membrane, 4-sealing ring, 5-through hole, 6-bottom bearing, 7-upper bushing, 8-hollow shaft, 9-hollow paddle , 10-nozzle, 11-water pipe joint, 12-bracket, 13-solar water heater, 14-fermentation liquid circulating pump, 15-biogas outlet, 16-heat exchanger, 17-circulating water pump, 18-suction port, 19- Filter layer, 20-water storage tank, 21-biogas slurry outlet, 22-hot water inlet, 23-biogas slurry inlet, 24-hot water outlet, 25-water replenishment port, 26-drainage port, 27-valve.

Detailed ways

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.

The vertical dry fermentation device includes a fermenter 1, a heat exchange device and a stirring device.

The upper part of the fermenter 1 is provided with a feed inlet 2, a biogas outlet 15, and the lower part is provided with a suction port 18, and a filter layer 19 is provided in the suction port 18 to prevent solid biogas residue from entering the heat exchange device. An elastic membrane 3 is arranged on the top, and the elastic membrane 3 is sealed and connected with the dry fermentation chamber, and communicated through the through hole 5. The installation of the elastic membrane 3 can predict the remaining amount of biogas in the fermenter 1 and ensure the safety of operators.

The heat exchange device includes a solar water heater 13, a fermented liquid circulating pump 14, a heat exchanger 16, a circulating water pump 17 and a water storage tank 20, and the heat exchanger 16 is provided with a biogas slurry inlet 23, a biogas slurry outlet 21, Hot water inlet 22 and hot water outlet 24, the suction port 18 is connected to the biogas slurry inlet 23 through a pipeline, the biogas slurry outlet 21 is connected to the inlet of the fermentation liquid circulation pump 14 through a pipeline, and the hot water inlet 21 is connected through a pipeline The road is connected with the outlet of the solar water heater 13, the hot water outlet 24 is connected with the upper part of the water storage tank 20 through the pipeline, the lower part of the water storage tank 20 is connected with the inlet of the circulating water pump 17 through the pipeline, and the outlet of the circulating water pump 17 is connected with the outlet of the solar water heater 13 through the pipeline. The inlet is connected, and the hot water heated by the solar water heater 13 and the biogas slurry realize heat exchange in the heat exchanger 16, and the biogas slurry is heated to maintain a suitable fermentation temperature in the fermenter 1 and improve the fermentation efficiency; The water tank 20 is also provided with a replenishment port 25 and a drain port 26 .

The stirring device includes a hollow shaft 8, a hollow paddle 9, an upper bushing 7, and a bottom bearing 6. The hollow shaft 8 is vertically installed in the center of the fermenter 1, and the top of the hollow shaft 8 is fixed on the top of the fermenter 1. The upper shaft sleeve 7 is rotationally connected, and the upper shaft sleeve 7 is provided with a water pipe joint 11 connected to the outlet of the fermentation liquid circulation pump 14 through a pipeline, and the bottom end of the hollow shaft 8 is rotationally connected with the bottom bearing 6 fixed on the bottom of the fermentation tank 1 , the hollow shaft 8 is horizontally equipped with a hollow paddle 9, the hollow paddle 9 is provided with a nozzle 10, and the directions of the nozzles 10 on the two symmetrical hollow paddles 9 are opposite; The biogas liquid has a relatively high pressure and flow rate. The biogas slurry flows into the hollow shaft 8 through the water pipe joint 11, and then sprays out from the nozzle 10 on the hollow paddle 9. Due to the direction of the nozzle 10 on the two symmetrical hollow paddles 9 On the contrary, the hollow paddle 9 and the hollow shaft 8 are rotated under the action of the reaction force to stir the fermented material.

All pipelines are provided with valves 27 .

The solar water heater 13 is fixed on the top of the fermenter 1 through a bracket 12, and has a compact structure and good lighting.

The elastic membrane 3 and the fermenter 1 are sealed and connected by a sealing ring 4 .

The nozzle 10 and the hollow paddle 9 form an angle of 60-75 degrees, and an appropriate angle can make the effect of the reaction force more significant.

The working process of the utility model: under the action of the fermented liquid circulation pump 14, the filtered biogas liquid is drawn out from the suction port 18, and the heat is exchanged with the hot water heated by the solar heater 13 through the heat exchanger, and is The heated biogas slurry continues to be sprayed from the nozzle 10 through the hollow shaft 8 and the hollow paddle 9 under the action of the fermentation liquid circulation pump 14, and the reaction force is generated to drive the stirring device to rotate, so as to realize the stirring of the materials in the fermentation tank 1; 13. The treated hot water flows into the water storage tank 20 after being exchanged and cooled by the heat exchanger 16, and then returns to the Taineng water heater 13 under the action of the circulating water pump 17; The residual amount of biogas reduces potential safety hazards.

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.

Claims (4)

1. a kind of vertical dry-process installation for fermenting, it is characterised in that：The vertical dry-process installation for fermenting includes fermentation tank, heat exchange dress It puts and agitating device；The fermentation tank top is equipped with feed inlet, methane outlet, and lower part is equipped with pump orifice, is equipped in pump orifice Filter layer, the top of fermentation tank are equipped with elastic membrane, and elastic membrane is tightly connected with dry method fermentation cabin, and is connected by through hole；It is described Heat-exchanger rig include solar water heater, fermentation liquid circulation pump, heat exchanger, water circulating pump and water tank, on the heat exchanger It is connected equipped with biogas slurry import, biogas slurry outlet, hot water inlet and hot water outlet, the pump orifice by pipeline with biogas slurry import, Biogas slurry outlet is connected by pipeline with the entrance that fermentation liquid circulation pumps, and hot water inlet is connected by the outlet of pipeline and solar water heater It connects, hot water outlet is connected by pipeline with water storage upper box part, and water storage lower box part is connected by pipeline with water circulating pump entrance, Xun Huan The outlet of water pump is connected by pipeline and the entrance of solar water heater, and the water tank is equipped with water supplement port and discharge outlet；Institute The agitating device stated includes hollow shaft, hollow blade, Upper shaft sleeve, base bearing, and the hollow shaft is vertically mounted in fermentation tank The heart, the top of hollow shaft and the Upper shaft sleeve being fixed at the top of fermentation tank are rotatablely connected, and Upper shaft sleeve passes through pipe equipped with water pipe head Road is connected with fermentation liquid circulation pump discharge, and the bottom of hollow shaft and the base bearing being fixed on fermenter base are rotatablely connected, Horizontal equipped with hollow blade in hollow shaft, hollow blade is equipped with nozzle, the nozzle side on symmetrical two hollow blades To opposite；Valve is equipped on all pipelines.

2. vertical dry-process installation for fermenting according to claim 1, it is characterised in that：The solar water heater passes through stent It is fixed on the top of fermentation tank.

3. vertical dry-process installation for fermenting according to claim 1, it is characterised in that：Between the elastic membrane and fermentation tank It is tightly connected by sealing ring.

4. vertical dry-process installation for fermenting according to claim 1, it is characterised in that：The nozzle and hollow blade into 60-75 degree angle.