Novel efficient mixing device for dry desulfurization

Abstract

The utility model discloses a novel efficient mixing device for dry desulfurization, which comprises a flue gas treatment bin shell, and one side of the outer wall of the flue gas treatment bin shell is communicated with an exhaust port; a gas inlet mechanism for allowing flue gas to enter the flue gas treatment bin shell is arranged on the flue gas treatment bin shell, and the gas inlet mechanism comprises a connecting pipe. According to the utility model, the turbulent flow mechanism is arranged on the connecting pipe and comprises a plurality of groups of rotational flow blades, so that the mixing effect of a desulfurizing agent and flue gas is greatly enhanced, the contact probability of the desulfurizing agent and SO2 in the flue gas is increased, the retention time of the desulfurizing agent in the mixing device is longer, the desulfurization reaction time is prolonged, and the desulfurization efficiency is improved. The desulfurization reaction efficiency is fully improved, the concentration of the desulfurizing agent in the device is uniform through multiple times of turbulent flow, acceleration and efficient mixing, the problem that the consumption of the desulfurizing agent is too high due to non-uniform concentration and low reaction efficiency is avoided, and the operation cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization equipment, in particular to a novel high-efficiency mixing device for dry desulfurization. Background Art

[0002] At present, the flue gas dry desulfurization tower mainly adopts the empty tower form, that is, no internal parts are set inside the desulfurization tower, such as the CFB desulfurization tower. The CFB desulfurization tower is a straight empty tower structure. The flue gas enters from the bottom and is discharged from the side outlet of the tower top. Some of them adopt a Venturi acceleration structure set at the flue gas inlet at the bottom of the desulfurization tower. After the flue gas is accelerated, it reacts with the injected desulfurizer in the tower for desulfurization.

[0003] The existing new high-efficiency mixing device for dry desulfurization is sprayed into an empty tower when in use. The main disadvantages of this process are uneven mixing of flue gas and desulfurizer, high and low concentrations of desulfurizer in different areas, low desulfurization reaction efficiency, large desulfurizer consumption, high operating cost, and in order to increase the reaction time, a very high desulfurization tower is often required, which greatly increases the cost of steel and the difficulty of construction. A Venturi acceleration structure is set at the flue gas inlet, which can only accelerate the flue gas and cannot achieve the purpose of enhancing the mixing effect. There is uneven mixing of flue gas and desulfurizer in the CFB desulfurization tower, high and low concentrations of desulfurizer in different areas of the tower, and poor flow field in the tower. At the same time, in order to extend the residence time of the desulfurizer, the CFB desulfurization tower is generally very high, and when the site is limited, construction and installation are difficult. Utility Model Content

[0004] The purpose of the utility model is to provide a new type of high-efficiency mixing device for dry desulfurization, which solves the above-mentioned background problems by arranging a turbulent mechanism in the air intake part so that the flue gas forms turbulence when entering and advances in an irregular curve spiral.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A novel high-efficiency mixing device for dry desulfurization comprises a flue gas treatment chamber shell, one side of the outer wall of the flue gas treatment chamber shell is connected to an exhaust port;

[0007] The smoke treatment chamber shell is provided with an air intake mechanism for supplying smoke into the smoke treatment chamber shell, the air intake mechanism comprises a connecting pipe, the connecting pipe is installed on the top of the smoke treatment chamber shell, the bottom of the connecting pipe is connected to an accelerating spinal tube, and the accelerating spinal tube is located inside the smoke treatment chamber shell;

[0008] The connecting pipe is provided with a flow disturbance mechanism for disturbing the smoke entering the connecting pipe;

[0009] The smoke treatment chamber shell is provided with a sealing assembly for sealing itself.

[0010] As a further solution of the utility model: the cross-sectional shape of the accelerating spinal tube is a trapezoid, and the accelerating spinal tube and the shell of the smoke treatment chamber are made in one piece.

[0011] As a further solution of the utility model: the spoiler mechanism includes an air intake volute, the air intake volute is connected to an end of the connecting pipe away from the smoke treatment chamber shell, and the inner side wall of the air intake volute is evenly installed with swirl blades.

[0012] As a further solution of the utility model: the air intake volute is spiral, and reinforcing ribs are connected between the air intake volute and the smoke treatment chamber shell.

[0013] As a further solution of the utility model: the sealing assembly includes a fixed plate, which is installed on one side of the bottom of the smoke treatment bin shell, a connecting plate is hinged on the bottom of the fixed plate close to the smoke treatment bin shell, and a sealing bin door is installed on the side of the connecting plate away from the fixed plate, an electric cylinder is hinged at the middle position of the fixed plate close to the side of the smoke treatment bin shell, and the end of the electric cylinder away from the fixed plate is hinged to the connecting plate.

[0014] As a further solution of the utility model: the sealed chamber door and the connecting plate are made in one piece, and the sealed chamber door is tightly fitted to the bottom of the smoke treatment chamber shell.

[0015] Beneficial effects of the utility model:

[0016] (1) A turbulence mechanism is provided on the connecting pipe, and the turbulence mechanism includes multiple groups of swirl blades, thereby greatly enhancing the mixing effect of the desulfurizer and the flue gas, and increasing the contact probability between the desulfurizer and SO2 in the flue gas. At the same time, the desulfurizer stays in the mixing device for a long time, which increases the desulfurization reaction time and fully improves the desulfurization reaction efficiency. After multiple turbulence and acceleration, the concentration of the desulfurizer in the high-efficiency mixing device is uniform, avoiding the problem of excessive desulfurizer consumption caused by uneven concentration and low reaction efficiency, and saving operating costs;

[0017] (2) By providing a sealing assembly on the shell of the flue gas treatment chamber, the staff can directly release the seal of the bottom of the shell of the flue gas treatment chamber by controlling the electric cylinder in the sealing assembly during maintenance, thereby achieving the convenience of regular ash removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a main structural schematic diagram of the utility model;

[0020] Figure 2 This utility model Figure 1 A schematic diagram of the enlarged structure at point A;

[0021] Figure 3 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0022] Figure 4 It is a side view cross-sectional structural schematic diagram of the utility model;

[0023] Figure 5 This utility model Figure 4 Schematic diagram of the enlarged structure at B.

[0024] In the figure: 1. Flue gas treatment chamber shell; 2. Exhaust port; 3. Connecting pipe; 4. Accelerating vertebral tube; 5. Inlet volute; 6. Swirl blades; 7. Fixing plate; 8. Connecting plate; 9. Sealing chamber door; 10. Electric cylinder. DETAILED DESCRIPTION

[0025] 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 of 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.

[0026] Real-time Example 1

[0027] See also Figure 1-Figure 5 As shown, the utility model is a new type of high-efficiency mixing device for dry desulfurization, including a flue gas treatment chamber shell 1, one side of the outer wall of the flue gas treatment chamber shell 1 is connected with an exhaust port 2, and the flue gas treatment chamber shell 1 is provided with an air intake mechanism for supplying flue gas into the flue gas treatment chamber shell 1, and the air intake mechanism includes a connecting pipe 3, and the connecting pipe 3 is installed on the top of the flue gas treatment chamber shell 1, and the bottom of the connecting pipe 3 is connected with an accelerating spinal tube 4, and the accelerating spinal tube 4 is located inside the flue gas treatment chamber shell 1, and the cross-sectional shape of the accelerating spinal tube 4 is a trapezoid, and the accelerating spinal tube 4 and the flue gas treatment chamber shell 1 are made in an integrated manner, so that the flue gas will be accelerated after entering the accelerating spinal tube 4, and then the turbulent flow above is formed later;

[0028] like Figure 4 and Figure 5As shown, the connecting pipe 3 is provided with a flow disturbance mechanism for disturbing the flue gas entering the connecting pipe 3, and the flow disturbance mechanism includes an air intake volute 5, which is connected to the end of the connecting pipe 3 away from the flue gas treatment chamber shell 1, and the inner wall of the air intake volute 5 is evenly installed with swirl blades 6, the air intake volute 5 is spiral, and reinforcing ribs are connected between the air intake volute 5 and the flue gas treatment chamber shell 1, so as to extend the travel path of the flue gas and increase its residence and mixing time. In actual application, the number of spiral turns of the air intake volute 5 can be set as a standard based on whether the flue gas desulfurizer can be fully mixed;

[0029] Example 2

[0030] like Figure 1 and Figure 2 As shown, a sealing component for sealing the smoke treatment bin shell 1 is provided on the smoke treatment bin shell 1, and the sealing component includes a fixing plate 7, which is installed on one side of the bottom of the smoke treatment bin shell 1, and a connecting plate 8 is hinged on the bottom of the fixing plate 7 close to the smoke treatment bin shell 1, and a sealing bin door 9 is installed on the side of the connecting plate 8 away from the fixing plate 7, and an electric cylinder 10 is hinged at the middle position of the fixing plate 7 close to the smoke treatment bin shell 1, and the end of the electric cylinder 10 away from the fixing plate 7 is hinged to the connecting plate 8, the sealing bin door 9 and the connecting plate 8 are made as one piece, and the sealing bin door 9 is tightly fitted to the bottom of the smoke treatment bin shell 1, the electric cylinder 10 can be connected to the control part through a wire, and the control part controls the electric cylinder 10 to act, so that the electric cylinder 10 drives the sealing bin door 9 to automatically open or close the smoke treatment bin shell 1, and further, the part where the sealing bin door 9 and the smoke treatment bin shell 1 are fitted can be a rubber layer to ensure its sealing effect.

[0031] The working principle of the utility model is as follows: the exhaust port 2 is connected with the flue gas subsequent treatment equipment, and after the desulfurizer is ground by the mill and is qualified, it is sent to the inlet of the air intake volute 5 through the conveying fan and the conveying pipeline, so that the desulfurizer and the flue gas enter the high air intake volute 5 together. Since there are multiple groups of swirl blades 6 in the air intake volute 5, the flue gas and the desulfurizer are dispersed by the swirl blades 6 to form turbulence, and move forward in an irregular curve spiral, and enter the acceleration spinal canal under the guidance of the air intake volute 5. In this process, the contact probability between the desulfurizer and the SO2 in the flue gas is increased to form a mixing effect. At the same time, the desulfurizer stays in the mixing device for a long time, which increases the desulfurization reaction time and fully improves the desulfurization reaction efficiency.

[0032] Subsequently, the flue gas fully mixed with the desulfurizer enters the accelerating spinal tube 4 and is sprayed into the bottom of the flue gas treatment bin shell 1 under the action of the accelerating spinal tube 4. The flue gas then rises turbulently from bottom to top in the space between the flue gas treatment bin shell 1 and the accelerating spinal tube 4. In this process, the mixing reaction of the flue gas and the desulfurizer is further ensured, and finally enters the subsequent dust removal system from the exhaust port 2 on the flue gas treatment bin shell 1.

[0033] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A novel high-efficiency mixing device for dry desulfurization, comprising a flue gas treatment chamber shell (1), one side of the outer wall of the flue gas treatment chamber shell (1) is connected to an exhaust port (2), characterized in that: The smoke treatment chamber shell (1) is provided with an air intake mechanism for allowing smoke to enter the smoke treatment chamber shell (1), the air intake mechanism comprising a connecting pipe (3), the connecting pipe (3) being installed on the top of the smoke treatment chamber shell (1), the bottom of the connecting pipe (3) being connected to an accelerating spinal tube (4), and the accelerating spinal tube (4) being located inside the smoke treatment chamber shell (1); The connecting pipe (3) is provided with a flow disturbance mechanism for disturbing the smoke entering the connecting pipe (3); The smoke treatment chamber shell (1) is provided with a sealing component for sealing itself.

2. A novel high-efficiency mixing device for dry desulfurization according to claim 1, characterized in that: The cross-sectional shape of the accelerating cone tube (4) is a trapezoid, and the accelerating cone tube (4) and the smoke treatment chamber shell (1) are manufactured in an integrated manner.

3. A novel high-efficiency mixing device for dry desulfurization according to claim 1, characterized in that: The flow disturbance mechanism comprises an air intake volute (5), the air intake volute (5) being connected to an end of the connecting pipe (3) away from the smoke treatment chamber housing (1), and swirl blades (6) being evenly mounted on the inner side wall of the air intake volute (5).

4. A novel high-efficiency mixing device for dry desulfurization according to claim 3, characterized in that: The air intake volute (5) is spiral-shaped, and reinforcing ribs are connected between the air intake volute (5) and the smoke treatment chamber shell (1).

5. A novel high-efficiency mixing device for dry desulfurization according to claim 1, characterized in that: The sealing assembly comprises a fixing plate (7), the fixing plate (7) being mounted on one side of the bottom of the smoke treatment chamber shell (1), a connecting plate (8) being hingedly connected to the bottom of the fixing plate (7) close to the smoke treatment chamber shell (1), and a sealing chamber door (9) being mounted on the side of the connecting plate (8) away from the fixing plate (7), an electric cylinder (10) being hingedly connected to the middle position of the fixing plate (7) close to the smoke treatment chamber shell (1), and an end of the electric cylinder (10) away from the fixing plate (7) is hingedly connected to the connecting plate (8).

6. A novel high-efficiency mixing device for dry desulfurization according to claim 5, characterized in that: The sealed chamber door (9) and the connecting plate (8) are manufactured in an integrated manner, and the sealed chamber door (9) is tightly fitted to the bottom of the smoke treatment chamber shell (1).

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