JPS61500062A - Equipment for anaerobic fermentation - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Equipment for anaerobic fermentation The present invention relates to an apparatus for anaerobic fermentation and an anaerobic fermentation method carried out within the apparatus.

Anaerobic fermentation of liquid substrates from aqueous liquid wastes and effluents is a known method. Those who usually take The method involves supplying liquid M continuously or semi-continuously to a closed fermentation container, and then Anaerobic fermentation of the liquid substrate, often at warm temperatures, to produce a gaseous product (usually methane) It is something to do. During the fermentation process - solid substances, non-fermentable substances and fermentation residues will settle to the bottom of the space as sludge and excess fermented liquid substrate will be removed from the fermentation vessel. be removed. During the fermentation process, the liquid in the container is either almost static or stirred. It becomes. The problem with this method is that it does not support the microorganisms involved in fermentation. Particles of solid substances that are present together with the liquid body in the container are particularly susceptible to the forces generated during the fermentation process. This is because the droplets are entrained upward due to the floating action of the droplets. .

According to the present invention, in the chemical industry, for example, distillation towers, removal θ towers, humidification equipment, etc. Fluid/fluid contact element pieces used in fluid/fluid contact devices can be arranged randomly or regularly. A liquid-permeable layer of a packed material is formed by arranging the liquid into a solid material. Entrainment of powder droplets can be eliminated.

These fluid/fluid contact elements have regular shapes such as grids, tubes, sheets, etc. may be completed. However, the preferred fluid/fluid contact element is ring, resing ring, pal ring (Pall), tell ring (Tell) erete), Kula (Berl and Intalox) and cascade minirin (a ring whose overall length is shorter than its diameter). Fluid/Fluid contact If the contact element is a separating element, the layer of filling material (backing layer) is perforated. Preferably, it is formed of a randomly arranged layer of elements supported on a support.

It is an object of the invention to include a plurality of fermentation zones, each fermentation zone having a layer of packed material as described above. An object of the present invention is to provide an anaerobic fermentation vessel comprising:

The apparatus for anaerobic fermentation according to the present invention has a longitudinal centerline in a substantially horizontal direction, and has a pair of ends. A nearly cylindrical envelope sealed by a plate and extending in the width and length direction of this envelope. A partition section that extends and divides the interior of the outer covering section into two overlapping spaces, each of which has a A generally horizontal liquid-permeable layer of filler material extends across the space between the upper and A partition section that divides the space into a lower section and a liquid substrate into each lower section of each space. means for introducing gas, means for removing sludge from each lower section, and means for introducing gas from each upper section. and means for removing the fermented liquid from each upper stage.

The partition dividing the outer shell of the fermentation device into two spaces may be flat; , Preferably, the cross section of the outer covering portion in the width direction is formed in an arc shape as shown in the figure. is preferred.

When formed with an arcuate cross section in this way, the partition section is curved so that the cross section is concave downward. It is preferable to do so.

Furthermore, the average depth of the liquid below the filling material layer is 100 to 3000 mm. The length is preferably 200 to 1500 mm. Liquid depth about 15 00 mm or less, the fermentation rate per unit volume of the fermentation device increases; 000 n+m or more, the fermentation rate will not increase to an effective level. Sunawa In other words, if the total amount of liquid under the filling material layer in the reaction vessel is increased beyond a certain amount, the unit There is no corresponding increase in the overall fermentation rate per volume.

BRIEF DESCRIPTION OF THE DRAWINGS In order that the present invention may be fully understood, the following description of the drawings is provided.

Figure 1 is a cross-sectional view in the width direction of a fermentation apparatus according to the present invention, and Figure 2 is a cross-sectional view of the apparatus not shown in Figure 1. Longitudinal sectional view 9 of the fermentation device As shown, the fermentation apparatus according to the present invention is sealed by a pair of end plates (2, 2a). It consists of a substantially cylindrical outer covering part (1). An arc-shaped partition that is concave at the bottom ( 3) extends over the entire width of this outer covering part 1〉, and connects the inside of the outer covering part to the lower space and the lower air. It is divided into between and ′. Each of the upper and lower spaces is supported by effective supports (7a, 7b). Liquid permeation consisting of a random array of separate fluid/fluid contacting elements The layers (6a, 6b) separate the upper gas zone (4a, 4b) from the lower liquid zone. It is divided into zones (5a, 5b). Gas zone (4a, 4b)’r It is connected to the gas exhaust conduit (8) with a valve through the port located on the end plate (2). ing. One set of liquid supply pipes (9a, 9b) is connected to the liquid zone (5a, 5b) extending the entire length of the plate and passing through the end plate (2) to connect to the manifold (not shown). and is further connected to a valved liquid supply conduit (not shown). Each liquid supply pipe The liquid in the liquid zone (5a, 5b) is released from the pipe (9a, 9b). There is a hole or nozzle for ejecting the water. The nozzle or hole allows the liquid to flow horizontally into the liquid zone. arranged to emit in a direction or downward direction.

Sludge discharge pipe (10a, 10b) through the liquid zone (5a, 5b) is provided below the liquid supply pipes (9a, 9b) and in each liquid zone (5). a, 5b) is disposed close to the bottom. Sludge discharge pipe (10a, 10b) extends through the end plate (2) and has a suitable valved sludge discharge conduit F'< Ila, 1lb).

At the top of the 11 layers (ea, 6b) of the filler material, there are grooves (12a, 12a, 12b) that are open upward. 12b) extends in the longitudinal direction of the outer jacket part (1) and has a port provided in the end plate (2). ・It is connected to the liquid discharge conduit □ (13a, 13b) with a valve. groove The upper edges of the sections (12a, 12b) are arranged so that the liquid in each of the two spaces of the fermentation device The upper surface is defined and acts as a weir to remove the fermented liquid from the space.

During operation of the device according to the invention, the sludge (shown by dashed lines (14a, 14b)) ) is deposited at the bottom of each liquid zone (5a, 5b) and above this deposition level. The height from The length is preferably 200 to 1500 mm as described in the introduction.

The outer covering part (1) has a diameter of 2 to 4 m, preferably about 3 m, and the outer covering part (1) The total length is, for example, 5 to 30 m, preferably 10 to 20 m. However, the present invention The fermentation equipment includes two fermentation zones and forms a unit, and this unit is easy to manufacture, can be assembled off-site, and can be moved to the designated location after assembly. It can be transported to a location. Furthermore, the entire fermentation facility may consist of multiple fermentation devices according to the present invention. The number of each building block is determined based on the total amount of substrate to be fermented. Ru.

In operation, the liquid supply is directed to each of the upper spaces formed by the partitions (3). This is done via the fluid supply pipes (9a, 9b), and each liquid zone (5a, 5 b) flows upwardly through the layer of filling material (6) where the fermentation action takes place) a.

6 ()), the fermented liquid is discharged through the grooves (12a, 12b). , the gas generated by fermentation 1 is discharged through the gas exhaust conduit (8a).

8b). Sludge comes from the lower liquid zone (5a, 5b) The sludge is removed intermittently by the sludge discharge pipes (10a, 10b).

The fermentation process carried out using the fermentation device according to the invention is carried out at a suitable temperature, e.g. It can be carried out at a temperature of 0 to 70°C, and in that case, both the upper and lower spaces of the fermentation equipment are The outer covering part (1) is further provided with an external heat insulating material. .

Substrates suitable to be fermented according to the invention include effluent from citric acid production, paper manufacturing Waste liquid from pulp manufacturing, waste liquid from molasses fermentation, edible oil manufacturing industry, dairy products, pharmaceuticals This includes waste liquid from manufacturing industries such as brewing products and foodstuffs.

The present invention describes a fermentation device that is divided into just a pair of zones by an internal partition. As explained above, for example, a pair of partitions can be used to divide the space into three spaces, and each space can be divided into three spaces. a liquid-permeable layer consisting of body-contacting elements and suitable means for supplying and removing liquid; , a sludge discharge means, and a gas removal means may be provided.

Using the fermentation device according to the invention, two separate fermentation methods can be carried out on different substrates. This makes it possible to implement the system.

Alternatively, the fermentation units of fermentation equipment can be sequentially connected to sequentially ferment a single substrate. You may do so.

Engraving (no changes to the content) Procedure Ne City Official Book (Method) %formula% 2. Name of the invention: Anaerobic fermentation device 3. Person who makes corrections Relationship to the incident: Patent applicant Name Biomass Limited 5. Date of amendment order: October 22, 1985 (shipment date) 6. Subject of amendment Document pursuant to the provisions of Article 184-5, Paragraph 1 of the Patent Law (column for representative of patent applicant) Application translation (Delete 1 British citizen J in column ■, ■Column ``Korea'' ≠; Senchu added), international search report

Claims (1)

[Claims] [1] A nearly cylindrical cylinder having a nearly horizontal longitudinal centerline and sealed by a pair of end plates. an outer covering portion having a shape and an interior portion of the outer covering portion extending over the entire width and length of the outer covering portion; It is a partition that divides the fermentation space into two overlapping fermentation spaces, each fermentation space has a A generally horizontal liquid-permeable layer of filler material extends across each said space and forms an upper and lower section. a partition section configured to divide the fermentation space into a step section; and a liquid in the lower section of each of the fermentation spaces means for introducing a substrate and for removing sludge from each of said lower sections; means for removing gas from each of said upper stages; and each of said upper stages. and means for removing fermented liquid from the anaerobic fermentation apparatus. [2] A liquid permeable layer made of the filling material separated the fluid/fluid contact elements. 2. The fermentation device according to claim 1, wherein the fermentation device is formed in a random arrangement. [3] Below the liquid permeable layer made of the filling material in each of the spaces and Claims in which the average depth of the liquid above the floor of the space is 100 to 3000 mm. 2. The fermentation device according to item 1 or 2. [4] The partition portion is curved and recessed downward when viewed in cross section. A fermentation device according to any one of the preceding claims. [5] The fermentation apparatus according to claim 1, as described above with reference to the accompanying drawings. . [6] Fermenting a liquid substrate in the apparatus according to any one of the preceding claims; A method of anaerobic fermentation of liquid substrates, which consists of the steps of: