CN2836892Y - Filter device for boiler dedusting and water-treatment - Google Patents

Abstract

The utility model relates to a filter device for the dust removal and water treatment of a boiler, which is composed of a water inlet pipe, a filter zone, a filter layer, a water purifying zone, a water outlet pipe and a dirt discharge unit. The utility model is characterized in that the filter layer is composed of a supporting plate and a U-shaped filter pipe arranged on the supporting plate. The utility model has the advantages of big quantity of treated water of a unit area, convenient ash removal, maintenance and management, etc., and because the U-shaped filter pipe is hung in the air, the surface of the U-shaped filter pipe is not easy to accumulate mud and is easier to filter. The treated water quality can be smaller than or equal to 30 mg/L (the SS of the water quality treated by micropore filter bricks is 50-100 mg/L in general). Since the whole device uses the mode that a single pipe is installed one by one, the single pipe can be conveniently replaced or cleaned and automation control can be realized.

Description

Boiler dust removal water treatment filter device

technical field

The utility model relates to a boiler dust removal water treatment device, in particular to a filter device for boiler dust removal water treatment.

Background technique

In order to eliminate the pollution of boiler smoke to the atmosphere, most manufacturers choose wet dust removal technology. Wet dedusting has the characteristics of low investment, high treatment efficiency, simple operation, and small footprint. However, the wastewater discharged by wet dedusting contains a large amount of suspended solids, which will cause secondary pollution if it is not handled properly; and in industrial boilers In the process of use, a large amount of waste water is discharged every day. If it is not utilized, it will not only waste water, but also increase the discharge of sewage and cause environmental pollution.

The recycling and reuse of boiler dedusting water must solve the problem of water purification. The dust particles separated from the flue gas are only a few microns to tens of microns, and it is difficult to settle and separate in water. The normal treatment is not only a large site, but also a high investment. Existing boiler dedusting water treatment filtering device mainly filters boiler dedusting water through microporous filter brick wall (its filter unit is a single filter brick, and the filter wall is then made of filter bricks). However, the microporous filter brick wall has the disadvantages of easy mud formation and troublesome cleaning. If one filter brick is damaged, the whole filter brick wall must be replaced.

Utility model content

The purpose of the utility model is to overcome the defects of the existing filter device by changing the structure of the filter device, improve the treatment capacity and quality of the boiler dedusting water, and facilitate installation, maintenance and automatic control.

Said filter device of the utility model is made up of support plate and the U-shaped filter tube that is installed on it.

The said U-shaped filter pipe of the utility model is as shown in Figure 1. The U-shaped tube wall of the U-shaped filter tube is the filter medium, and the dust removal water of the boiler is filtered through the filter medium from the outside to the inside.

The bottom of the said U-shaped filter tube in the utility model can be a flat-bottomed structure as shown in the figure, or an arc-shaped structure.

The U-shaped filter tube mentioned in the utility model is made by the existing technology, that is, mixing porcelain particles, silicon carbide particles, etc. Fired at high temperature.

Said filtering device of the utility model can be installed by the schematic diagram of installation as shown in Figure 2. That is to say, the U-shaped filter tube is fixed on the support plate through the installation head of the filter tube. According to the water volume of the boiler dust removal water, multiple U-shaped filter tubes can be arranged and installed on the support plate. The support plate separates the filter area from the water purification area. The lower part of the support plate is the filter area, which is the sewage to be filtered, and the upper part is the water purification area, which is the filtered water. The sewage enters the water purification area from the filter area through the U-shaped filter pipe.

The pipe wall of the U-shaped filter pipe described in the utility model is composed of countless micropores into a network and evenly distributed, slender and curved, which can effectively increase the filtration area of the sewage, and filter the particles through the interception effect during filtration , through inertial collisions, particles with a particle size smaller than the micropore diameter are intercepted.

The utility model has the following advantages: 1. The amount of treated water per unit area is large, because the U-shaped filter tube hangs in the air, the surface is not easy to be muddy, and it is easier to filter; 2. The SS of the treated water can reach ≤30mg/L (micro The water quality (SS) treated by porous filter bricks is generally 50-100mg/L); 3. It is convenient for cleaning and maintenance management. Since the whole device is installed one by one with a single tube, it is very convenient to replace or clean a single tube; 5. Realize the advantages of automatic control and so on.

Description of drawings

Figure 1 is a schematic diagram of the structure of the U-shaped filter tube described in the present invention, a is the wall of the filter tube, b is the installation head of the filter tube, c is the direction in which the boiler dedusting water enters the inner cavity of the filter tube through the tube wall, and d is the filter tube wall. After the water discharge direction indicated.

Fig. 2 is a schematic diagram of an embodiment of the utility model, 1 is a U-shaped filter pipe, 2 is a water inlet pipe, 3 is a support plate, 4 is a gasket, 5 is a mounting bolt, 6 is a mounting plate, and 7 is an outlet pipe. 8 is a filter area, 9 is a mud bucket, 10 is a blowdown valve, and 11 is a blowdown pipe.

Fig. 3 is the schematic diagram of another embodiment of the present utility model, and 21 is mud clearing area, and 22 is support plate, and 23 is gasket, and 24 is mounting bolt, and 25 is mounting plate, and 26 is outlet pipe, and 27 is water inlet pipe, 28 is a U-shaped filter pipe, 29 is a filter area, 210 is a screw rod, and 211 is a motor.

Detailed ways

The utility model will be further illustrated by the following examples.

Example 1.

Fig. 2 is a schematic diagram of this embodiment. The U-shaped filter pipe 1 is installed on the support plate 3 through the gasket 4, the installation bolt 5, and the installation plate 6. The support plate 3 divides the filter area 8 and the water purification area into two areas, and the sewage enters the filter area 8 from the water inlet pipe. , through the U-shaped filter pipe 1, enter the clean water area, and then discharge from the outlet pipe 7. When the sediment deposited at the bottom of the filter area accumulates to a certain amount, the sediment can be discharged from the sewage pipe 11 through the sewage valve 10.

The following table is the implementation situation under different technical parameters in this embodiment.

Main technical parameters of boiler dust removal water treatment equipment serial number Treated water volume (m3/h) Total number of tubes (root) Tube length (m) DN1(mm) DN2(mm) DN3(mm) Height H(m) 1 1.0 9 0.6 25 32 100 1.6 2 2.5 25 1.0 50 65 100 1.6 3 5.0 49 1.4 65 80 125 1.8 4 8.0 81 1.8 80 100 150 2.1 5 12.0 121 2.2 100 125 150 2.5

Among them, the total number of tubes is the total number of U-shaped filter tubes, which are evenly installed on the support plate at the same interval, for example, the arrangement of 9 U-shaped filter tubes is 3 horizontally and 3 vertically, and the number of 25 U-shaped filter tubes The arrangement is 5 horizontally and 5 vertically, and the others are similar; the tube length refers to the length of the U-shaped filter tube; DN1 is the inner diameter of the U-shaped filter tube; DN2 is the outer diameter of the U-shaped filter tube; DN3 is the installation head of the U-shaped filter tube Diameter; height H is the distance from the top of the water purification area to the bottom of the filtration area.

The positions of the water inlet pipes and water outlet pipes listed in this embodiment can be adjusted according to actual conditions, and the total installation height and installation size can also be determined according to requirements. If the treated water volume is within the above range but not in line with the table, it can be customized according to the actual water volume.

Example 2.

Fig. 3 is a schematic diagram of this embodiment. Same as embodiment 1, U-shaped filter pipe 28 is also installed on the support plate 22 by gasket 23, mounting bolt 24, mounting plate 25, and support plate 22 is divided into two districts by filter area 29 and clean water area, sewage from The water inlet pipe 27 enters the filter area 29, passes through the filtration of the U-shaped filter pipe 28, enters the water purification area, and then discharges from the water outlet pipe 26. , deposits are pushed into the mud-cleaning area 21, and the deposits are cleared out in the mud-cleaning area.

The arrangement of the U-shaped filter tubes 28 on the support plate 22 in this embodiment is the same as in Embodiment 1, and the U-shaped filter tubes 28 can be evenly installed on the support plate 22. The number, length and diameter of the U-shaped filter tubes , can be selected according to the amount of sewage treatment. When the amount of sewage treatment is large, multiple filter areas can also be considered.

Claims (2)

1, a kind of boiler dusting water treatment filter, form by water inlet pipe, filtering area, filter course, clean water area, outlet pipe, blowdown unit, sewage enters filtering area, filters through filtering layer and enter clean water area through water inlet pipe, discharge by outlet pipe again, the sewage deposit is discharged by the blowdown unit, it is characterized in that filter course is to be made of support plate and U type screen pipe mounted thereto.

2, device according to claim 1, the bottom that it is characterized in that U type screen pipe is the circular arc type structure.

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