Desulfurization wastewater filtering system

Abstract

The utility model discloses a desulfurization wastewater filtering system which comprises a desulfurization tower, a flue gas inlet arranged at the lower part of the desulfurization tower, a first filter screen arranged at the lower part in the desulfurization tower and arranged above the flue gas inlet, a second filter screen arranged in the desulfurization tower and obliquely arranged, one end of the second filter screen connected to the left side wall of the desulfurization tower, and the other end of the second filter screen connected to the right side wall of the desulfurization tower. The lower end of the left side of the desulfurizing tower is connected with a first discharging pipe, the lower end of the right side of the desulfurizing tower is connected with a second discharging pipe, the first discharging pipe is connected with two groups of first auxiliary filtering structures through communicating pipes, and the second discharging pipe is connected with a second auxiliary filtering structure; the first auxiliary filtering structure and the second auxiliary filtering structure are communicated with the centralized treatment box. According to the utility model, the two groups of filter screens are arranged in the desulfurizing tower for primary filtration, then the first auxiliary filter structure is used for secondary filtration, and the second auxiliary filter structure is used for filtering and removing impurities, so that the filter effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas desulfurization equipment, in particular to a desulfurization wastewater filtering system. Background Art

[0002] Flue gas desulfurization treatment includes the use of wet desulfurization, that is, the flue gas is sprayed with desulfurization slurry to achieve desulfurization. After the desulfurization slurry reacts with the flue gas desulfurization, it will be placed at the bottom of the desulfurization tower, which will carry dust particles in the flue gas or form precipitation mixed in the desulfurization wastewater. For the treatment of desulfurization wastewater, it is generally directly concentrated in the processor for reaction steps including filtration, dosing, neutralization, etc. However, more precipitation and particulate dust will impact the conventional filter screen, and some of the filtered materials will be stuck on the filter screen to form a blockage. If not handled in time, it will delay the filtration effect and affect work efficiency. Therefore, there is room for improvement in the existing direct filtration method for treating desulfurization wastewater. Utility Model Content

[0003] The purpose of the utility model is to provide a desulfurization wastewater filtering system which improves working efficiency and ensures filtering effect in view of the deficiencies existing in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme for filtering desulfurization wastewater:

[0005] A desulfurization wastewater filtration system comprises a desulfurization tower, wherein a flue gas inlet is provided at the lower portion of the desulfurization tower, a first filter is provided at the lower portion of the desulfurization tower, the first filter is arranged above the flue gas inlet, a second filter is arranged in the desulfurization tower, the second filter is arranged obliquely, one end of the second filter is connected to the left side wall of the desulfurization tower, and the other end is connected to the bottom of the desulfurization tower, a first discharge pipe is connected to the lower left end of the desulfurization tower, and a second discharge pipe is connected to the lower right end, the first discharge pipe is connected to two groups of first auxiliary filter structures through a connecting pipe, the second discharge pipe is connected to the second auxiliary filter structure, and the first auxiliary filter structure and the second auxiliary filter structure are connected to a centralized treatment box.

[0006] A further improvement of the desulfurization wastewater filtration system of the utility model is that the first auxiliary filtration structure includes a detachable connecting pipe, an arc-shaped net is arranged on the upper part of the connecting pipe, a support is arranged below the arc-shaped net, there is a gap between the support and the wall of the connecting pipe, the support is also provided with holes and grooves running through from top to bottom, and a horizontal net is arranged below the support.

[0007] A further improvement of the desulfurization wastewater filtering system of the utility model is that the second auxiliary filtering structure comprises a detachable second connecting pipe, and an inclined fixed net is arranged in the second connecting pipe.

[0008] A further improvement of the desulfurization wastewater filtration system of the utility model is that an auxiliary discharge pipe is also provided at the side end of the second connecting pipe, a notch is provided on the pipe wall of the auxiliary discharge pipe, a second notch is provided on the pipe wall of the second connecting pipe, the second notch faces the lower end of the fixed net, the notch faces the second notch, and a baffle is also slidably connected to the notch.

[0009] A further improvement of the desulfurization wastewater filtering system of the utility model is that a sliding push plate is further arranged in the second connecting pipe, and the sliding push plate is located on the upper end surface of the fixed net.

[0010] A further improvement of the desulfurization wastewater filtering system of the utility model is that a guide plate is further arranged on the upper part of the second connecting pipe.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model arranges two groups of filter screens in the desulfurization tower for primary filtration, and then has a first auxiliary filter structure for secondary filtration and a second auxiliary filter structure for filtering and removing impurities, thereby improving the filtration effect.

[0013] 2. The first auxiliary filtering structure of the utility model is divided into two groups and used separately, so as to facilitate the cleaning of the other group. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] In the figure: 1 desulfurization tower, 2 flue gas inlet, 3 first filter screen, 4 second filter screen, 5 first auxiliary filter structure, 6 second auxiliary filter structure, 7 connecting pipe, 8 support, 9 arc net, 10 horizontal net, 11 second connecting pipe, 12 fixed net, 13 auxiliary feeding pipe, 14 second notch, 15 push plate, 16 guide plate. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] like Figure 1As shown, a desulfurization wastewater filtration system includes a desulfurization tower 1, a flue gas inlet 2 is provided at the lower part of the desulfurization tower, and a first filter 3 is provided at the lower part of the desulfurization tower. The first filter performs preliminary filtering on the precipitate formed by the mixed reaction of the desulfurization slurry and the flue gas. The first filter is arranged above the flue gas inlet, and a second filter 4 is arranged in the desulfurization tower. The second filter is arranged obliquely, one end of which is connected to the left side wall of the desulfurization tower, and the other end is connected to the bottom of the desulfurization tower. The lower left end of the desulfurization tower is connected to a first discharge pipe, and the lower right end is connected to a second discharge pipe. The first discharge pipe is connected to two groups of first auxiliary filter structures 5 through a connecting pipe, and the second discharge pipe is connected to a second auxiliary filter structure 6. The first auxiliary filter structure and the second auxiliary filter structure are connected to a centralized processing box. The second filter can block some particles in the flue gas, and at the same time, most of the formed precipitates will also be blocked by the filter.

[0018] Furthermore, the first auxiliary filtering structure includes a detachable connecting pipe 7, an arc-shaped net 9 is arranged at the upper part of the connecting pipe, a support 8 is arranged below the arc-shaped net, there is a gap between the support and the pipe wall of the connecting pipe, and a hole groove is also arranged on the support that runs through the upper and lower parts, and a horizontal net 10 is arranged below the support, and the horizontal net is connected to the pipe wall. The first auxiliary filtering structure performs secondary filtration and is divided into two groups at the same time, which are used in combination to facilitate cleaning of the filtered objects.

[0019] Furthermore, the second auxiliary filtering structure includes a detachable second connecting pipe 11, in which an inclined fixed net 12 is arranged. An auxiliary feeding pipe 13 is also arranged at the side end of the second connecting pipe, and a notch is arranged on the wall of the auxiliary feeding pipe. A second notch 14 is arranged on the wall of the second connecting pipe, and the second notch faces the lower end of the fixed net, and the notch faces the second notch. A baffle is also slidably connected at the notch. The inclination of the fixed net facilitates the downward discharge of the precipitate, and the auxiliary feeding pipe is used to collect the filtered impurities. The setting of the baffle reduces the desulfurization wastewater from entering the auxiliary feeding pipe.

[0020] Furthermore, a sliding push plate 15 is provided in the second connecting pipe, and the sliding push plate is located on the upper end surface of the fixed net. A guide plate 16 is also provided on the upper part of the second connecting pipe. The setting of the push plate facilitates the discharge of impurities into the auxiliary discharge pipe, and the setting of the guide plate reduces the waste water from falling along the pipe wall and affecting the driving device of the auxiliary discharge pipe or the push plate.

[0021] The working principle of the utility model is as follows: the flue gas reacts with the desulfurization slurry, and is filtered once by the first filter screen and the second filter screen, and then the waste water is discharged from the first auxiliary filter structure, and a secondary filtration is performed during the discharge process; impurities containing most of the precipitates and particles are discharged from the second auxiliary filter structure, and the precipitates and other impurities are collected by the fixed net, and then the waste water is subsequently treated.

[0022] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A desulfurization wastewater filtration system, Features: It includes a desulfurization tower, a flue gas inlet is provided at the lower part of the desulfurization tower, a first filter is provided at the lower part of the desulfurization tower, the first filter is arranged above the flue gas inlet, a second filter is arranged in the desulfurization tower, the second filter is arranged obliquely, one end of the second filter is connected to the left side wall of the desulfurization tower, and the other end is connected to the bottom of the desulfurization tower, a first discharge pipe is connected to the lower left end of the desulfurization tower, and a second discharge pipe is connected to the lower right end, the first discharge pipe is connected to two groups of first auxiliary filter structures through a connecting pipe, the second discharge pipe is connected to the second auxiliary filter structure, and the first auxiliary filter structure and the second auxiliary filter structure are connected to a centralized processing box.

2. A desulfurization wastewater filtration system according to claim 1, Features: The first auxiliary filtering structure includes a detachable connecting pipe, an arc-shaped net is arranged on the upper part of the connecting pipe, a support is arranged below the arc-shaped net, there is a gap between the support and the wall of the connecting pipe, and the support is also provided with holes and grooves running through the upper and lower parts, and a horizontal net is arranged below the support.

3. A desulfurization wastewater filtration system according to claim 1, Features: The second auxiliary filtering structure comprises a detachable second connecting pipe, and an inclined fixed net is arranged in the second connecting pipe.

4. A desulfurization wastewater filtration system according to claim 3, Features: An auxiliary feeding pipe is also provided at the side end of the second connecting pipe, a notch is provided on the tube wall of the auxiliary feeding pipe, a second notch is provided on the tube wall of the second connecting pipe, the second notch faces the lower end of the fixed net, the notch faces the second notch, and a baffle is slidably connected to the notch.

5. A desulfurization wastewater filtration system according to claim 4, Features: A sliding push plate is also provided in the second connecting pipe, and the sliding push plate is located on the upper end surface of the fixed net.

6. A desulfurization wastewater filtration system according to claim 5, Features: A guide plate is also provided on the upper portion of the second connecting pipe.

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