CN201003054Y - Buried constant medium and high temperature biogas digester - Google Patents

Abstract

The utility model relates to a buried constant medium and high temperature biogas pond. The main pond body adopts a spherical crown structure for the upper and lower bottom surfaces, the middle part of the main pond body structure adopts a barrel body, and the joint of the two adopts a reinforced connection. Structure, the bottom and top of the main pool body are paved with dense Pengsong material layers, the outer side of the main pool body, the top and the bottom are equipped with a holding room, the holding room is connected to the air passage, and the holding room around the main pool body is provided with ventilation. Adjustment hole. The utility model solves two problems: 1. The normal-temperature biogas liquid fermentation in rural areas is fermented into medium-high constant-temperature biogas liquid fermentation. 2. Avoid the influence of regional climate and seasonal temperature on biogas slurry fermentation, so that biogas technology can be used normally in rural areas all over the country all year round, and maintain constant medium and high temperature biogas slurry fermentation.

Description

Buried constant medium and high temperature biogas digester

Technical field: The utility model relates to a buried constant medium and high temperature biogas digester.

Background technology: Normal and low temperature buried biogas digesters are still commonly used in rural areas of our country. The use of this buried normal and low temperature tank type is affected to a certain extent by the change of region, season and climate temperature. The annual temperature in the south of my country The range of change is 10 degrees to 30 degrees, and the annual temperature range in the northern part of my country is 6 degrees to 25 degrees (the biogas fermentation temperature is in the range of 8 degrees above zero to 60 degrees above zero, the higher the temperature, the higher the gas production rate), according to The highest range of 30 degrees prevails and has just reached half of the effect in the range of 60 degrees. The other half is yet to be developed. In practice, if the temperature in the pool in the south of my country reaches 25-30 degrees, it can only be operated for 7-8 months, and the temperature of the inner pool in the remaining 5-4 months can reach 10-24 degrees. In the cold area of northern my country, the temperature in the pool can be operated for 5-7 months when the temperature in the pool is 8-25 degrees, and the temperature in the other 5-7 months is 8-15 degrees. The situation in the alpine regions of northern my country is even less optimistic, and it will maintain operation for 4-5 months at a temperature of 8-22 degrees. Months with a temperature of 8-10 degrees will occupy 7-8 months. During this period, it cannot be operated at all, and it is only protected and kept warm. During the 7-8 months in the alpine area, some marsh pond households built the pond in the livestock shed or the vegetable planting shed, which can run for 1-2 months longer, and the operation effect is not very satisfactory, time-consuming and material-intensive ,high cost. So to sum up, it is still difficult to popularize the development of biogas energy in rural areas of our country, especially in the cold and alpine regions of northern my country. What is more difficult is the alpine region of our country.

Summary of the invention: The purpose of this utility model is to provide a buried constant medium-high temperature biogas digester that effectively utilizes organic waste resources and maintains biogas slurry fermentation at medium-high constant temperature biogas slurry fermentation. The purpose of this utility model is achieved by the following structure: the utility model is a buried constant medium and high temperature biogas tank, the main tank body structure adopts reinforced concrete structure, and the upper and lower bottom surfaces of the structural shape adopt spherical crown type Structure, the middle part of the main pool body structure adopts a drum body, and the joint between the two adopts a reinforced connection structure. A dense layer of Pengsong material is laid on the bottom and top of the main pool body. The greenhouse and the holding greenhouse are connected with the air passage. The holding greenhouse around the main pool body is provided with ventilation adjustment holes, and the top of the holding greenhouse is provided with four comprehensive openings for holding warm materials and holding greenhouse inspections, which are close to the outer wall of the holding greenhouse. The feeding and mixing tank with the main tank, the material outlet, and the material inlet are respectively connected. The feeding and mixing tank is equipped with a material-liquid diversion channel, and there is a flow-blocking plate inside, and insulation materials are added between them. The inspection port is designed It is a water seal layer and an insulation layer. There is a water volume control pipe at the water seal layer of the inspection port. There is a water adding pool with sealing protection at the outer end of the pipe. There is an anti-silting pool at the bottom of the pipeline in the discharge room. There is a mixed-flow wall for the fermentation feed liquid in the body, and an anti-silting wall at the outlet of the fermentation room. On the outer wall of the holding greenhouse and the outer wall of the discharge room, there is a surface protective layer integrating heat preservation, buffer expansion, moisture-proof and waterproof. The utility model mainly solves two problems: 1. The normal-temperature biogas slurry fermentation in rural areas is made into medium-high constant-temperature biogas slurry fermentation. 2. Avoid the influence of regional climate and seasonal temperature on biogas slurry fermentation, so that biogas technology can be used normally in rural areas all over the country all year round, and maintain constant medium and high temperature biogas slurry fermentation. The technical measures taken on the strength of the overall structure are as follows: the main pool body structure adopts a reinforced concrete structure. In terms of structural shape, the spherical crown structure is adopted for the upper and lower bottom surfaces, and the barrel structure is adopted for the middle part of the main structure of the pool. Reinforcement measures are adopted at the joint of the two to enhance its integrity. The dense Pengsong material layer, combined with the above technical effects, basically solved the problem of cracks in the main pool body. Aiming at the technical requirement of maintaining medium and high constant temperature biogas slurry fermentation, the utility model adopts that a holding room and an airway are arranged on the outside of the main pond body, as well as on the top and bottom. There is a ventilation adjustment hole in the holding room around the main pool body for the adjustment of the room temperature and the adjustment of the room temperature control time. The top of the holding room is equipped with four comprehensive openings for heating materials and holding room inspection for adjustment and support. Based on the situation in the greenhouse, considering the convenience of maintaining the main pool body in winter, a mixed flow pool for feeding the main pool body is provided close to the outer wall of the greenhouse and is connected to the discharge port and the feed port so that it can be installed in winter. Feeding and stringing are carried out under the condition of protective and heat preservation measures, so as to avoid the temperature loss in the pool during feeding and stringing. In order to ensure the sealing effect of the air storage chamber of the main pool body, a plastic film air barrier layer is added on the outside of the spherical crown of the main pool body. Through the practical verification of the operation in the winter of 04, 05, and 06, without any special ground insulation measures in the biogas pond, the temperature of the fermentation material liquid in the main pond is guaranteed to reach 35-50 degrees above zero, and the temperature in the holding room reaches 80 degrees above zero. -95 degrees, if the construction of the pool is combined with residential houses, the waste heat in the pool can be used for indoor geothermal heat in the house, and if it is combined with the construction of vegetable greenhouses, the waste heat in the pool can be used for the ground temperature in the shed, and a certain ideal effect will be received. When the pool body of the utility model has an outdoor temperature of minus 28 degrees, the fermentation temperature of the biogas slurry in the main pool is maintained at 35 degrees to 50 degrees above zero, and the temperature in the temperature-maintaining pool is maintained within the range of 80 degrees to 95 degrees above zero. The difference in regional climate and the influence of annual and seasonal temperature changes make the operation of the medium and high temperature fermentation of the biogas fermentation feed liquid in the biogas digester abnormal. That is to say, this type of pool can maintain the normal operation of biogas fermentation at constant medium and high temperature throughout the year in all regions of the country. Seed husks, leftovers from harvesting various crops, etc. The construction of this new type of constant medium and high temperature fermentation biogas pool is combined with residential housing, and the waste heat in the pool can be completely used for geothermal heat in housing. If it is combined with the construction of vegetable greenhouses, the waste heat in the pool can also be completely used for geothermal heat in the greenhouses, so as to achieve the purpose of improving comprehensive benefits.

Description of drawings:

Figure 1 is a top view of the overall structure of the utility model

Fig. 2 is a sectional view of A-A of Fig. 1

Fig. 3 is a B-B sectional view of Fig. 1

Detailed ways:

As shown in Figure 1, the utility model is a buried constant medium and high temperature biogas digester. The structure of the main pond body 1 adopts a reinforced concrete structure, and the upper and lower bottom surfaces of the structural body adopt a spherical crown structure. The main pond body 1. The middle part of the structure adopts a drum body, and the junction of the two adopts a reinforced connection structure. A dense layer of Pengsong material is laid on the bottom and top of the main pool body 1. There are holding rooms on the outside, top and bottom of the main pool body 2. The holding greenhouse 2 is connected with the air passage, and the holding greenhouse 2 around the main pool body 1 is provided with a ventilation adjustment hole 3, and the top of the holding greenhouse 2 is provided with four holding temperature materials and a comprehensive inspection port 4 for holding the greenhouse, which are close to the holding chamber. The outer wall of the greenhouse is provided with the feeding and mixing tank 5 of the main tank body, the material outlet 6, and the feeding port 7 respectively. , with insulation material added therebetween, as shown in Figure 2, the inspection port 10 is designed as a water seal layer and an insulation layer, and a water volume control pipe is provided at the water seal layer of the inspection port, and a sealing protection pipe is provided at the outer end of the pipe. In the pool, an anti-silting pool 12 is provided at the bottom of the pipeline 11 in the discharge room, a fermentation material liquid mixed flow wall 13 is provided in the main pool body, an anti-silting wall 14 is provided at the discharge port of the fermentation room, and an anti-silting wall 14 is provided on the outer wall of the holding room 1. The outer wall of the discharge room is provided with a surface protection layer 15 integrating heat preservation, cushioning expansion, moisture-proof and waterproof.

As shown in Figure 3, the surrounding wall 16 is vertically arranged in the holding chamber to form a regulating chamber 17, and the feeding and mixing tank 5 is connected to the feeding room 18. Road 20 connects the exhaust duct 21 of top again, and the side wall of lateral holding room and vertical lower air duct has ventilation hole, and vertical wind passage door 22 is installed on the top of ventilation hole.

Claims (2)

1; high temperature methane-generating pit in a kind of buried perseverance; it is characterized in that: the main tank body structure adopts skeleton construction; on the structural feature on; bottom surface all adopts the ball crown type structure; cylinder body is adopted at main tank body structure middle part; the reinforcement syndeton is adopted in the two junction; all laid closely knit Peng Song material layer in main tank body bottom and top; the main tank body outside and top and bottom all are provided with holds the greenhouse; holding the greenhouse is communicated with parichnos; the place, greenhouse of holding around the main tank body is provided with the adjusting aperture that ventilates; holding the top, greenhouse is provided with four and adds and hold warm materials and hold the greenhouse inspection and comprehensively use mouth; near holding reinforced accent pond and the discharge port of mixing that exterior wall place, greenhouse is provided with main tank body; opening for feed is used to respectively lead to; reinforced mixing transfers that the pond is supporting a feed liquid flow-guiding channel; in be provided with every stream plate; be added with lagging material therebetween; inspection port is designed to water seal layer and thermal insulation layer; water seal layer place with inspection port is provided with water yield control pipeline; the pipeline outer end is provided with the pond that adds of a band seal protection; be provided with an anti-silt pond in the discharge room duct bottom; in main tank body, be provided with fermented feed liquid mixed flow wall; be provided with together anti-silt wall at sweathouse discharge port place, holding greenhouse exterior wall wall face; discharge room exterior wall wall face is provided with one collection insulation; buffering expands; moistureproof and waterproof is in the surface layer protective layer of one.

2, high temperature methane-generating pit in a kind of buried perseverance according to claim 1, it is characterized in that: hold the greenhouse all wall formation of ring surge chamber vertically is set, reinforced mixing transfers the pond to connect feed space, exhaust passage connects the exhaust passage that vertical downtake reconnects portion by horizontal downtake, side direction is held on the sidewall of greenhouse and vertical downtake and is had the ventilation aperture, and range wind road junction door is installed on ventilation hole top.

Images