CN205815721U - A kind of Impulse packing in the streamlined duct of bio-trickling filter - Google Patents

Abstract

The utility model discloses a pulse packing for a streamlined channel used in a biological trickling filter tower, which is composed of a disc-shaped packing body (1), and the disc-shaped packing body (1) is provided with a channel (2). ) is a 1/2 section sinusoidal curve, one end of the channel (2) is a large hole (3), the other end is a small hole (4), a large hole (3) is surrounded by small holes (4), and the small hole (4) Surrounded by large holes (3), when multiple disc-shaped packing bodies (1) are stacked together, the channels (2) of two adjacent disc-shaped packing bodies (1) are connected to form a symmetrical sinusoidal continuous tunnel. The streamlined channel pulse packing used in the biological trickling filter provided by the utility model has a reasonable structural design, can increase the specific surface area of the packing, can increase the growth attachment layer of microorganisms, and enhance the contact between gas, liquid and organisms; prolong the life of the liquid in the packing. The residence time is improved, and the liquid utilization rate is improved, which can greatly provide the purification effect.

Description

A streamlined channel pulse packing for biological trickling filter

technical field

The utility model belongs to the technical field of biological trickling filter equipment, and in particular relates to a streamlined channel pulse filler for a biological trickling filter tower.

Background technique

Biological treatment of organic waste gas is one of the current research hotspots. Compared with traditional treatment methods, biological treatment technology has the advantages of high treatment efficiency, low infrastructure and operating costs, and no secondary pollution. Biological filtration and biological scrubbers have been widely used in deodorization. When industrial waste gas is used as the degradation target, the biological trickling filtration method shows a stronger ability to degrade organic matter, and the biological trickling filtration tower is widely used.

Packing is the carrier of microorganisms in the biological trickling filter tower, and is an important part of the biological trickling filter tower. Among the packing materials that have been studied, they are divided into bulk packing and structured packing. Bulk packing is a particle with a certain geometric shape and size. Body, generally accumulated in bulk in the biological trickling filter tower. Structured packing is a kind of packing that is arranged in a uniform geometric pattern and stacked neatly in the tower. Compared with the two packings, the structured packing specifies the gas-liquid flow path, improves the gas-liquid distribution, and provides a large specific surface area under low pressure drop. And high porosity, small pressure drop, stable structure, large operating flexibility, these advantages greatly improve the mass transfer performance and production capacity of the tower.

As a means of enhancing mass transfer, pulses were recognized by Sappy as early as 1971. He used Raschig rings of different materials and sizes to study the two-phase flow, axial mixing and mass transfer characteristics of pulsed packed towers. , through the comparison of several tower types under the same operating conditions, it is believed that the operation cost performance of the pulse packed tower is the highest.

The traditional pulse packing structure does not conform to the principle of fluid mechanics, and the gas-liquid flow resistance is relatively large; on the other hand, the inner surface of the packing is smooth and the specific surface area is small, which cannot provide enough attachment surface for microbial growth.

Utility model content

Purpose of the utility model: The purpose of this utility model is to overcome the deficiencies of the prior art, and based on the advantages and defects of the existing pulse packing, propose a streamlined channel and increase the specific surface area; make a special shape in the disc-shaped plastic packing Pores, after filling, form a plurality of sinusoidal channels, which can greatly reduce the resistance of gas-liquid flow in them, and further enhance mass transfer; and use this as a skeleton to provide a variety of treatment options for the inner surface of the channels, Combine the advantages of different materials, increase the specific surface area of the filler, provide a larger adhesion layer for microbial growth, and adapt to the application conditions of different occasions.

Technical solution: In order to realize the purpose of the utility model, the technical solution adopted in the utility model is:

A streamlined channel pulse packing used in a biological trickling filter, which is composed of a disc-shaped packing body, and a channel is arranged in the disc-shaped packing body, and the channel is a 1/2 section sinusoidal curve. For small holes, a large hole is surrounded by small holes, and small holes are surrounded by large holes. When multiple disc-shaped packing bodies are stacked together, the channels of adjacent two disc-shaped packing bodies are connected to form a symmetrical sinusoidal Curved continuous channel;

Ellipsoidal plastic mesh filler is embedded in the large hole of the channel, and semi-soft biological fillers such as polyurethane cotton or activated carbon fiber felt are stuffed in the ellipsoidal plastic mesh filler;

Or a layer of pleated packing is attached to the inner surface of the channel;

Or the inner surface of the channel is processed with continuous diversion corrugations, the direction of the diversion corrugations spirals downward along the inner surface of the channel, the cross section of the corrugation is sinusoidal, and the convex and concave patterns are arranged alternately.

As a preferred option, the above-mentioned streamlined channel pulse packing for a biological trickling filter, the diameter of the disc-shaped packing body is 4 to 8 times the thickness;

The diameter of the large hole in the channel is 1/8 to 2/8 of the diameter of the disc-shaped packing body, and the diameter of the small hole is 1/2 to 1/4 of the diameter of the large hole.

As a preferred version, the pulse packing of the streamlined channel for the above-mentioned biological trickling filter tower has a layer of pleated packing attached to the inner surface of the channel, and the thickness of the polyurethane cotton pleated layer in the large hole section in the channel is 3 times the diameter of the large hole. /8～6/8, the thickness of the polyurethane cotton folded layer in the small hole section is 1/8～2/8 of the diameter of the large hole, and the thickness of the polyurethane cotton folded layer gradually decreases from the large hole to the small hole section, and the polyurethane cotton There are small holes.

As a preferred solution, the above-mentioned streamlined channel pulse packing for a biological trickling filter tower has continuous diversion corrugations processed on the inner surface of the channel, and the direction of the diversion corrugations spirals downward along the inner surface of the channel, and the corrugation and the horizontal direction The inclination angle α is 45 degrees or 60 degrees, the distance between the crest and trough of the corrugation is 1/20 to 1/10 meter, the cross section of the corrugation is sinusoidal, and the convex and concave patterns are arranged alternately.

As a preferred solution, in the streamlined channel pulse packing used in the above-mentioned biological trickling filter, the disc-shaped packing body is made of plastic, ceramic or metal materials.

As a preferred solution, the above-mentioned pulse packing for streamlined channels for a biological trickling filter tower, the pleated packing is a pleated packing made of nylon, polyester, vinylon or polyurethane cotton.

Beneficial effects: the pulse packing of the streamlined channel used in the biological trickling filter tower provided by the utility model has the following advantages:

The utility model provides streamlined channel pulse packing for biological trickling filter tower, which has a reasonable structural design and inherits the advantages of traditional pulse packing. The longitudinal flow channel expands and contracts alternately, and the gas and liquid pass through to generate strong turbulence and enhance mass transfer. Improve the internal channel of traditional pulse packing, and adopt streamlined channel, which can greatly reduce the resistance of gas-liquid flow and improve the efficiency of the tower.

And with the above-mentioned fillers as the skeleton, a variety of schemes are provided to improve the performance of the fillers in terms of specific surface area and bio-adhesion surface: Scheme 1: Embedding polyurethane cotton mesh ellipsoidal fillers in the channels, increasing the microbial growth adhesion layer, and the specific surface area of the fillers Increased, better than traditional pulse packing. Moreover, the advantages of plastic and polyurethane cotton are combined, which is suitable for the filler in the biological tower; scheme two: it is a bionic design for the human intestinal tract, and a layer of pleated filler is attached to the inner surface of the channel, which greatly increases the specific surface area of the filler. , to provide a large growth attachment layer for organisms, which can enhance the contact between gas-liquid and organisms, and improve the efficiency of the tower; scheme three: the inner surface of the channel is processed with continuous diversion corrugations, and the direction of the diversion corrugations spirals along the inner surface of the channel Downward, the specific surface area and roughness of the packing can be increased, thereby enhancing the mass transfer, prolonging the residence time of the liquid in the packing, improving the utilization rate of the liquid, and the intervention of the diversion corrugation can also solve the problem of uneven liquid distribution.

Description of drawings

Fig. 1 is a schematic structural view of the disc-shaped packing body in the pulse packing of the streamlined channel used in the biological trickling filter.

Fig. 2 is a schematic structural view of the upper surface of the disc-shaped packing body.

Fig. 3 is a structural schematic diagram of the lower surface of the disc-shaped packing body.

Fig. 4 is a structural schematic diagram of four disc-shaped packing bodies superimposed.

Fig. 5 is a structural schematic diagram of the longitudinal section in Fig. 4 .

Fig. 6 is a schematic structural view of embedding ellipsoidal plastic mesh packing in the large hole of the channel in the disc-shaped packing body.

FIG. 7 is a structural schematic diagram of the longitudinal section of FIG. 6 .

Fig. 8 is a structural schematic diagram of a layer of polyurethane cotton pleated filler attached to the inner surface of the hole in the disc-shaped filler body.

detailed description

Below in conjunction with accompanying drawing and specific embodiment, further set forth the utility model, should be understood that these embodiments are only used for illustrating the utility model and are not intended to limit the scope of the utility model, after having read the utility model, those skilled in the art will understand this utility model The modifications of various equivalent forms of the utility model all fall within the scope defined by the appended claims of the present application.

Example 1

As shown in Figures 1 to 5, a streamlined channel pulse packing for a biological trickling filter is composed of a plastic disc-shaped packing body 1, and a hole 2 is arranged in the plastic disc-shaped packing body 1, and the hole 2 is in the shape of 1/2 section of sinusoidal curve, one end of the channel 2 is a large hole 3, the other end is a small hole 4, a large hole 3 is surrounded by small holes 4, small holes 4 are surrounded by large holes 3, 4 plastic disc-shaped fillers When the bodies 1 are stacked together, the channels 2 of the two adjacent plastic disc-shaped packing bodies 1 are connected to form a symmetrical sinusoidal continuous channel;

The diameter of the plastic disc-shaped filler body 1 is 8 times its thickness; the diameter of the large hole 3 in the channel 2 is 1/8 of the diameter of the plastic disc-shaped filler body 1, and the diameter of the small hole 4 is 1/2 of the diameter of the large hole 3 .

As shown in Figures 6 and 7, the large hole 3 of the channel 2 is embedded with an ellipsoidal plastic mesh filler 5, and the ellipsoidal plastic mesh filler 5 is filled with polyurethane cotton 6;

Example 2

As shown in Figures 1 to 5, a streamlined channel pulse packing for a biological trickling filter, which is composed of a ceramic disc-shaped packing body 1, is provided with a channel 2 inside the ceramic disc-shaped packing body 1, and the channel 2 is in the shape of 1/2 section of sinusoidal curve, one end of the channel 2 is a large hole 3, the other end is a small hole 4, a large hole 3 is surrounded by small holes 4, small holes 4 are surrounded by large holes 3, 4 ceramic disc-shaped fillers When the bodies 1 are stacked together, the channels 2 of the adjacent two ceramic disc-shaped filler bodies 1 are connected to form a symmetrical sinusoidal continuous channel;

The diameter of the ceramic disc-shaped filler body 1 is 8 times its thickness; the diameter of the large hole 3 in the channel 2 is 1/8 of the diameter of the ceramic disc-shaped filler body 1, and the diameter of the small hole 4 is 1/2 of the diameter of the large hole 3 .

As shown in Figure 8, a layer of polyurethane cotton pleated filler (7) is attached to the inner surface of the tunnel (2), and the thickness of the polyurethane cotton folded layer of the macropore (3) section in the tunnel (2) is 1/2 of the diameter of the macropore (3). 3/8, the thickness of the polyurethane cotton folded layer in the small hole (4) section is 1/8 of the diameter of the large hole (3), and the thickness of the polyurethane cotton folded layer in the section from the large hole (3) to the small hole (4) gradually decreases. Small, with tiny holes in the polyurethane cotton.

Example 3

As shown in Figures 1 to 5, a streamlined channel pulse packing for a biological trickling filter, which is composed of a metal disc-shaped packing body 1, a metal disc-shaped packing body 1 is provided with a channel 2, and the channel 2 is in the shape of 1/2 section of sinusoidal curve, one end of the channel 2 is a large hole 3, the other end is a small hole 4, a large hole 3 is surrounded by small holes 4, small holes 4 are surrounded by large holes 3, 4 metal disc-shaped fillers When the bodies 1 are stacked together, the channels 2 of two adjacent metal disc-shaped filler bodies 1 are connected to form a symmetrical sinusoidal continuous channel;

The diameter of the metal disc-shaped filler body 1 is 8 times its thickness; the diameter of the large hole 3 in the channel 2 is 1/8 of the diameter of the metal disc-shaped filler body 1, and the diameter of the small hole 4 is 1/2 of the diameter of the large hole 3 .

The inner surface of the channel (2) is processed with continuous diversion corrugations, and the direction of the diversion corrugations spirals downward along the inner surface of the channel (2). The inclination angle α between the corrugations and the horizontal direction is 45 degrees or 60 degrees. It is 1/20 meter, the corrugated cross-section is sinusoidal, and the convex and concave patterns are arranged alternately.

The streamlined channel pulse packing used in the biological dripping filter provided by the utility model can increase the specific surface area of the packing, increase the growth attachment layer of microorganisms, enhance the contact between gas, liquid and organisms; prolong the residence time of the liquid in the packing, improve the The utilization rate can greatly provide the purification effect.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these improvements and Retouching should also be regarded as the scope of protection of the present utility model.

Claims (6)

1. the Impulse packing in the streamlined duct of a bio-trickling filter, it is characterised in that it is by disc filler body (1) Constituting, be provided with duct (2) in disc filler body (1), duct (2), in 1/2 section of sine curve, duct (2) one end is macropore (3), the other end is aperture (4), and a macropore (3) is around all aperture (4), and aperture (4) is around all macropore (3), Duo Geyuan When coil packing body (1) is stacked upon, the duct (2) of adjacent two disc filler body (1) communicates, and forms symmetry The continuous duct of sinusoidal；

The macropore (3) in duct (2) is embedded in by elliposoidal plastic mesh plate filler (5), is plugged with in elliposoidal plastic mesh plate filler (5) Polyurethane cotton or active carbon fiber felt (6)；

Or duct (2) inner surface one layer of pleated filler (7) of attachment；

Or duct (2) inner surface is machined with continuous water conservancy diversion ripple, water conservancy diversion ripple direction along duct (2) inner surface spirally to Under, ripple cross section is sinusoidal wave form, and burr is staggered with dimpled grain.

The Impulse packing in the streamlined duct of a kind of bio-trickling filter the most according to claim 1, it is characterised in that circle 4～8 times of coil packing body (1) a diameter of thickness；

In duct (2) the 1/8～2/8 of macropore (3) a diameter of disc filler body (1) diameter, aperture (4) a diameter of macropore (3) the 1/2～1/4 of diameter.

The Impulse packing in the streamlined duct of a kind of bio-trickling filter the most according to claim 1, it is characterised in that hole Road (2) inner surface one layer of pleated filler (7) of attachment, in duct (2), the thickness of the polyurethane cotton plicated layer of macropore (3) section is macropore (3) the 3/8～6/8 of diameter, thickness is macropore (3) diameter the 1/8～2/8 of the polyurethane cotton plicated layer of aperture (4) section, from greatly Hole (3) is gradually reduced to the thickness of aperture (4) section polyurethane cotton plicated layer, and polyurethane cotton has aperture.

The Impulse packing in the streamlined duct of a kind of bio-trickling filter the most according to claim 1, it is characterised in that hole Road (2) inner surface is machined with continuous water conservancy diversion ripple, and water conservancy diversion ripple direction is spirally downward along duct (2) inner surface, ripple with The inclination alpha of horizontal direction is 45 degree or 60 degree, and the crest of ripple and trough distance are 1/20, and ripple cross section is sinusoidal wave form, convex Stricture of vagina is staggered with dimpled grain.

5., according to the Impulse packing in the streamlined duct of a kind of bio-trickling filter described in any one of Claims 1-4, it is special Levying and be, described disc filler body (1) is that disc filler made by plastics, pottery or metal material.

The Impulse packing in the streamlined duct of a kind of bio-trickling filter the most according to claim 5, it is characterised in that institute The pleated filler (7) stated is the pleated filler that nylon, terylene, polyvinyl or polyurethane cotton are made.