A vacuum impregnation tank for denitration catalyst production

Abstract

The utility model discloses a vacuum impregnation tank for the production of denitration catalysts, and relates to the technical field of denitration catalyst impregnation devices, including an impregnation tank, a liquid storage tank arranged on the left side of the impregnation tank, and a recovery tank arranged on the right side of the impregnation tank; a storage cavity is provided in the liquid storage tank, and a liquid storage motor is provided on the top surface of the liquid storage tank, and the output shaft of the liquid storage motor passes through the top surface of the liquid storage tank and is arranged in the storage cavity, and the output shaft of the liquid storage motor is fixedly connected with a rotating shaft. In the utility model, the liquid storage motor, the rotating shaft, the mixing blades and the guide holes enable the liquid storage motor to be started first to drive the mixing blades to rotate when the impregnation operation is required, and then the impregnation liquid is transported to the impregnation tank for impregnation, and the rotation of the mixing blades can mix the impregnation liquid temporarily stored in the storage cavity to prevent the impregnation liquid from precipitating and affecting the impregnation operation.

Description

Technical Field

[0001] The utility model relates to the technical field of denitration catalyst impregnation devices, in particular to a vacuum impregnation tank used for denitration catalyst production. Background Art

[0002] Denitrification catalyst is the core part of SCR technology, which determines the denitrification efficiency and economy of SCR system. Its construction cost accounts for more than 20% of the cost of flue gas denitrification project, and its operation cost accounts for more than 30%. Denitrification catalyst catalyzes the conversion of nitrogen oxides into harmless nitrogen and water through chemical reaction. Common denitrification catalysts include metal oxides such as molybdenum, vanadium, iron, etc. These catalysts are widely used in denitrification process due to their high activity and stability.

[0003] The existing patent (application number: CN202320007601.X) proposes a denitrification catalyst impregnation device, including a raw material tank, an impregnation tank, a condensation tank, a buffer tank, and a vacuum pump connected in sequence by pipelines; the liquid outlet of the condensation tank is connected to the raw material tank through a pipeline, and the liquid outlet of the buffer tank is connected to the raw material tank through a pipeline.

[0004] The above-mentioned impregnation device only uses the raw material tank to store the impregnation liquid in a static manner. When the denitration catalyst impregnation liquid is static, the metal ions or organic matter in the solution may precipitate due to solubility changes or chemical reactions. This may cause uneven distribution of active ingredients in the impregnation liquid, reduce its contact effect with the catalyst and reaction efficiency, and the precipitates may block the pores or active sites of the catalyst, affecting the performance and life of the catalyst.

[0005] In view of this, this application is hereby filed. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a vacuum impregnation tank for the production of denitration catalysts to achieve the purpose of preventing the precipitation of the impregnation liquid.

[0007] In order to solve the above technical problems, the utility model provides a vacuum impregnation tank for the production of denitrification catalysts, including an impregnation tank, a liquid storage tank arranged on the left side of the impregnation tank, and a recovery tank arranged on the right side of the impregnation tank; a storage cavity is provided in the liquid storage tank, a liquid storage motor is provided on the top surface of the liquid storage tank, an output shaft of the liquid storage motor passes through the top surface of the liquid storage tank and is arranged in the storage cavity, the output shaft of the liquid storage motor is fixedly connected to a rotating shaft, a plurality of groups of mixing blades are arranged in a circular array on the rotating shaft, and guide holes are provided on the mixing blades.

[0008] Furthermore, the mixing blades are divided into four groups and arranged in a circular array at equal intervals on the outer wall of the rotating shaft. Each group of the mixing blades has four blades arranged in a linear array at equal intervals on the outer wall of the rotating shaft. The guide holes have eight linear arrays and are symmetrically opened on the mixing blades with the upper and lower center axes of the mixing blades as the axes.

[0009] Furthermore, electric heating plates are provided on the front and rear sides of the impregnation tank, a vacuum pump is provided on the right side of the impregnation tank, an impregnation chamber is opened in the impregnation tank, the impregnation chamber is connected to the storage chamber through a pipe, the pipe is divided into two sections, a water pump is provided at the connection of the two sections of the pipe, and a valve is provided on the pipe close to the impregnation chamber.

[0010] Furthermore, a separation pad is provided in the impregnation chamber, and the separation pad is located in the lower half of the impregnation chamber. A plurality of through holes are provided on the separation pad. An impregnation motor is provided on the bottom surface of the impregnation tank. The output shaft of the impregnation motor passes through the bottom surface of the impregnation tank and is provided in the impregnation chamber. The output shaft of the impregnation motor is fixedly connected to an impregnation column, and five fan blades are provided in a circular array on the impregnation column.

[0011] Furthermore, a condensation chamber is provided in the recovery tank, and the condensation chamber is connected to the upper end of the impregnation chamber through a pipeline. A liquid outlet connected to the condensation chamber is provided at the center of the bottom surface of the recovery tank, and a valve is also provided on the liquid outlet. A protective baffle is provided at the connection between the pipeline and the condensation chamber.

[0012] Furthermore, a liquid inlet is provided on the top surface of the liquid storage tank, and the liquid inlet is a straight slot protruding from the top surface of the liquid storage tank. A sealing cover adapted to the liquid inlet is plugged into the liquid inlet, and a rubber gasket is provided on the inner side of the sealing cover.

[0013] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art.

[0014] In the utility model, the liquid storage motor, the rotating shaft, the mixing blades and the guide holes enable the liquid storage motor to be started first to drive the mixing blades to rotate when the impregnation operation is required, and then the impregnation liquid is transported to the impregnation tank for impregnation. The rotation of the mixing blades can mix the impregnation liquid temporarily stored in the storage chamber to prevent the impregnation liquid from precipitating and affecting the impregnation operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0016] In the attached picture:

[0017] Figure 1 It is a schematic diagram of the overall structure of a vacuum impregnation tank used for the production of denitration catalysts;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of a liquid storage tank of a vacuum impregnation tank used for the production of denitration catalysts;

[0019] Figure 3 The figure is a schematic diagram of the cross-sectional structure of a vacuum impregnation tank for producing a denitration catalyst;

[0020] Figure 4 The figure is a schematic diagram of the cross-sectional structure of a recovery tank of a vacuum impregnation tank used in the production of denitration catalysts.

[0021] Numbers in the figure:

[0022] 1. Impregnation tank; 101. Impregnation chamber; 102. Electric heating plate; 103. Separation pad; 104. Impregnation motor; 105. Impregnation column; 106. Fan blade; 107. Top cover; 108. Handrail;

[0023] 2. Liquid storage tank; 201. Storage chamber; 202. Liquid inlet; 203. Liquid storage motor; 204. Rotating shaft; 205. Mixing blade; 206. Diversion hole; 207. Protective cover;

[0024] 3. Recovery tank; 301. Condensation chamber; 302. Liquid outlet; 303. Protective baffle;

[0025] 4. Water pump;

[0026] 5. Vacuum pump;

[0027] 6. Valve.

[0028] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0029] The embodiments of the present utility model are described in detail below.

[0030] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Embodiment 1

[0035] like Figure 1-4 As shown, the utility model provides a vacuum impregnation tank 1 for producing a denitration catalyst, comprising an impregnation tank 1, a liquid storage tank 2 arranged on the left side of the impregnation tank 1, and a recovery tank 3 arranged on the right side of the impregnation tank 1;

[0036] By providing a storage chamber 201 in the liquid storage tank 2, arranging a liquid storage motor 203 on the top surface of the liquid storage tank 2, allowing the output shaft of the liquid storage motor 203 to pass through the top surface of the liquid storage tank 2 and be arranged in the storage chamber 201 and be fixedly connected to the rotating shaft 204, four groups of mixing blades 205 are arranged in a circular array with equal spacing on the outer wall of the rotating shaft 204, and each group of mixing blades 205 is divided into four groups arranged in a linear array with equal spacing, so that when the impregnation liquid is poured into the storage chamber 201 for temporary storage, before the impregnation operation is performed, the liquid storage motor 203 can be started to drive the rotating shaft 204 to rotate, thereby driving the rotating shaft 20 The mixing blade 205 arranged on the mixing blade 205 rotates to mix the impregnation liquid in the storage chamber 201 to prevent the impregnation liquid from settling, thereby affecting the effect of the impregnation operation. In addition, eight guide holes 206 are symmetrically arranged in a linear array on the mixing blade 205 with the upper and lower central axes of the mixing blade 205 as the axes. This allows the impregnation liquid to be diverted through the guide holes 206 when the mixing blade 205 rotates, further enhancing the mixing effect of the mixing blade 205, preventing the impregnation liquid from settling, and reducing the resistance encountered by the mixing blade 205 when it rotates, making the rotation process of the mixing blade 205 smoother.

[0037] Furthermore, a liquid inlet 202 is provided on the top surface of the liquid storage tank 2 in the shape of a straight groove protruding from the top surface of the liquid storage tank 2, a sealing cover adapted thereto is inserted on the liquid inlet 202, and a rubber gasket is provided on the inner side of the sealing cover, so that the sealing cover can be removed from the liquid inlet 202, and then the impregnation liquid can be poured into the liquid inlet 202, so that the impregnation liquid can be quickly and conveniently added to the storage cavity 201 for temporary storage.

[0038] Specifically, a through hole connected to the impregnation chamber 101 is provided on the top surface of the impregnation tank 1, and a top cover 107 is inserted in the through hole. By adopting the above design, the staff can quickly open the impregnation chamber 101 by removing the top cover 107, and a C-shaped handrail 108 is installed on the top surface of the top cover 107, so that the staff can remove the top cover 107 by holding the handrail 108, which makes it more convenient for the staff to apply force when taking the top cover 107. Electric heating plates 102 are provided on the front and rear sides of the impregnation tank 1, and a vacuum pump 5 is provided on the right side of the impregnation tank 1. The impregnation chamber 101 is opened in the impregnation tank 1. 01 is connected with the storage chamber 201 through a pipeline, and the pipeline is divided into two sections. A water pump 4 is arranged at the connection of the two sections of the pipeline, and a valve 6 is arranged on the pipeline close to the impregnation chamber 101. By adopting the above design, after the denitration catalyst is placed in the impregnation chamber 101, the water pump 4 can be started by opening the valve 6 to transport the impregnation liquid temporarily stored in the storage chamber 201 to the impregnation chamber 101 to impregnate the denitration catalyst therein, and during the impregnation, the electric heating plate 102 can be started to heat the impregnation chamber 101, and the vacuum pump 5 can be started to increase the pressure in the impregnation chamber 101 to assist the impregnation liquid to enter the denitration catalyst.

[0039] Furthermore, by opening a condensation chamber 301 in the recovery tank 3, the condensation chamber 301 is connected to the upper end of the impregnation chamber 101 through a pipeline, so that after the impregnation liquid in the impregnation chamber 101 is heated and vaporized, it can enter the condensation chamber 301 through the pipeline for condensation, and a liquid outlet 302 connected to the condensation chamber 301 is set at the center of the bottom surface of the recovery tank 3, and a valve 6 is also set on the liquid outlet 302, so that after the impregnation liquid in the condensation chamber 301 is completely condensed, the impregnation liquid can be released from the liquid outlet 302 by opening the valve 6, and poured into the storage chamber 201 again through the liquid inlet 202, and a protective baffle 303 is set at the connection between the pipeline and the condensation chamber 301, so that the impregnation liquid condensed on the side wall of the condensation chamber 301 will not flow back to the impregnation chamber 101 from the connection between the pipeline and the condensation chamber 301.

[0040] Embodiment 2

[0041] Based on the first embodiment, specifically, Figure 3 As shown, a separation pad 103 is provided in the impregnation chamber 101, and the separation pad 103 is located in the lower half of the impregnation chamber 101. A plurality of through holes are provided on the separation pad 103. An impregnation motor 104 is provided on the bottom surface of the impregnation tank 1. The output shaft of the impregnation motor 104 passes through the bottom surface of the impregnation tank 1 and is provided in the impregnation chamber 101. The output shaft of the impregnation motor 104 is fixedly connected with an impregnation column 105. Five fan blades 106 are provided on the impregnation column 105 in a circular array. By adopting the above design, during the heating process of the electric heating plate 102, the impregnation motor 104 can be started to drive the impregnation column 105 to rotate, thereby driving the fan blades 106 on the impregnation column 105 to rotate, so as to mix the impregnation liquid at the bottom of the impregnation chamber 101, and prevent the impregnation liquid from settling at the bottom of the impregnation chamber 101 during the heating process.

[0042] In addition, a protective cover 207 is provided on the outer side of the liquid storage motor 203. The protective cover 207 can prevent the staff from accidentally touching the liquid storage motor 203 and causing damage to it during the process of pouring the immersion liquid. Ventilation holes are opened on the protective cover 207. The ventilation holes can protect the liquid storage motor 203 without affecting the heat dissipation of the liquid storage motor 203.

[0043] Working principle:

[0044] When in use, the sealing cover on the liquid inlet 202 can be opened first, and the impregnation liquid can be poured into the storage chamber 201 for temporary storage.

[0045] When the impregnation operation is required, first start the liquid storage motor 203 to drive the mixing blades 205 to rotate and mix the impregnation liquid temporarily stored in the storage chamber 201 to prevent the impregnation liquid from precipitating and affecting the impregnation operation. Then, hold the handrail 108 to remove the top cover 107 and place the denitration catalyst on the separation pad 103. Open the valve 6 on the pipeline and start the water pump 4 to transport the impregnation liquid to the impregnation chamber 101. After the transportation is completed, close the water pump 4 and the valve 6, start the electric heating plate 102 to heat the impregnation chamber 101, start the vacuum pump 5 to pressurize the impregnation chamber 101 to assist the impregnation liquid to enter the denitration catalyst, start the impregnation motor 104 to drive the fan blades 106 to rotate, and prevent the impregnation liquid from precipitating at the bottom of the impregnation chamber 101 during the heating process. During the impregnation operation, the vaporized impregnation liquid will enter the condensation chamber 301 through the pipeline for condensation.

[0046] When the impregnation operation is completed, first place the transfer container under the liquid outlet 302, open the valve 6 located on the liquid outlet 302, and after the condensed impregnation liquid completely flows out from the liquid outlet 302, the condensed impregnation liquid can be poured back into the liquid inlet 202 through the liquid inlet 202.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum impregnation tank (1) for producing a denitration catalyst, It comprises an impregnation tank (1), a liquid storage tank (2) arranged on the left side of the impregnation tank (1), and a recovery tank (3) arranged on the right side of the impregnation tank (1); Features: A storage cavity (201) is provided in the liquid storage tank (2), a liquid storage motor (203) is provided on the top surface of the liquid storage tank (2), an output shaft of the liquid storage motor (203) passes through the top surface of the liquid storage tank (2) and is provided in the storage cavity (201), the output shaft of the liquid storage motor (203) is fixedly connected to a rotating shaft (204), a plurality of groups of mixing blades (205) are provided on the rotating shaft (204) in a circular array, and a flow guide hole (206) is provided on the mixing blades (205).

2. A vacuum impregnation tank (1) for producing a denitration catalyst according to claim 1, characterized in that: The mixing blades (205) are divided into four groups and arranged in a circular array at equal intervals on the outer wall of the rotating shaft (204); each group of the mixing blades (205) has four mixing blades arranged in a linear array at equal intervals on the outer wall of the rotating shaft (204); and the guide holes (206) have eight mixing blades arranged in a linear array and symmetrically arranged on the mixing blade (205) with the upper and lower central axes of the mixing blades (205) as the axis.

3. A vacuum impregnation tank (1) for producing a denitration catalyst according to claim 2, characterized in that: Electric heating plates (102) are arranged on the front and rear sides of the impregnation tank (1), a vacuum pump (5) is arranged on the right side of the impregnation tank (1), an impregnation chamber (101) is provided in the impregnation tank (1), the impregnation chamber (101) is connected to the storage chamber (201) through a pipeline, the pipeline is divided into two sections, a water pump (4) is arranged at the connection of the two sections of the pipeline, and a valve (6) is arranged on the pipeline close to the impregnation chamber (101).

4. A vacuum impregnation tank (1) for producing a denitration catalyst according to claim 3, characterized in that: A separation pad (103) is arranged in the impregnation chamber (101), and the separation pad (103) is located in the lower half of the impregnation chamber (101). A plurality of through holes are provided on the separation pad (103). An impregnation motor (104) is arranged on the bottom surface of the impregnation tank (1). The output shaft of the impregnation motor (104) passes through the bottom surface of the impregnation tank (1) and is arranged in the impregnation chamber (101). The output shaft of the impregnation motor (104) is fixedly connected to an impregnation column (105), and five fan blades (106) are arranged in a circular array on the impregnation column (105).

5. A vacuum impregnation tank (1) for producing a denitration catalyst according to claim 4, characterized in that: A condensation chamber (301) is provided in the recovery tank (3), and the condensation chamber (301) is connected to the upper end of the impregnation chamber (101) via a pipeline. A liquid outlet (302) connected to the condensation chamber (301) is provided at the center of the bottom surface of the recovery tank (3), and a valve (6) is also provided on the liquid outlet (302). A protective baffle (303) is provided at the connection between the pipeline and the condensation chamber (301).

6. A vacuum impregnation tank (1) for producing a denitration catalyst according to claim 5, characterized in that: The top surface of the liquid storage tank (2) is provided with a liquid inlet (202), the liquid inlet (202) being a straight slot protruding from the top surface of the liquid storage tank (2), the liquid inlet (202) being plugged with a sealing cover adapted thereto, the inner side of the sealing cover being provided with a rubber gasket.

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