Automatic SCR denitration catalyst pre-drying device

Abstract

The utility model discloses an automatic SCR (Selective Catalytic Reduction) denitration catalyst pre-drying device which comprises an equipment base, and a heat recovery type circulating drying structure is arranged on the equipment base; the heat recovery type circulating drying structure comprises a drying box, a supporting base, a drying inner box, a pair of material supports, a pair of worm gear air inlet fans, a pair of air conveying pipes, a pair of supporting tables, a pair of high-temperature heaters and a recovery heating drying assembly. The catalyst drying device relates to the technical field of drying equipment, and has the beneficial effects that the problems that when the existing catalyst drying equipment is used for drying and processing, moisture in a catalyst is dried out through heating, a large amount of moisture volatilized and drifting in a drying cavity cannot be discharged, the internal humidity is increased, the drying efficiency of the catalyst is influenced, and the drying efficiency of the catalyst is influenced are solved; and meanwhile, water vapor generated by drying is high in temperature and cannot be utilized, and a large amount of energy is wasted.

Description

Technical Field

[0001] The utility model relates to the technical field of drying equipment, in particular to an automatic SCR denitration catalyst pre-drying device. Background Art

[0002] Denitrification catalyst is a technology used to reduce the emission of nitrogen oxides (NOx) in flue gas. It is widely used in the SCR denitrification system of power plants. It is a substance that causes the reducing agent to selectively react chemically with nitrogen oxides in flue gas at a certain temperature. Pre-drying treatment is required during the production process of the catalyst. During the drying process, the existing catalyst drying equipment uses heating to dry out the moisture in the catalyst. A large amount of moisture evaporates and floats in the drying chamber and cannot be discharged, which will increase the internal humidity and affect the drying efficiency of the catalyst. At the same time, the water vapor generated by drying is of high temperature and cannot be used, resulting in a large amount of energy waste. Utility Model Content

[0003] To achieve the above objectives, the utility model is implemented through the following technical solutions: an automated SCR denitration catalyst pre-drying device, comprising: a device base, on which a heat recovery type circulating drying structure is installed;

[0004] The heat recovery type circulation drying structure includes: a drying box, a support base, a drying inner box, a pair of material supports, a pair of worm gear air intake fans, a pair of air delivery pipes, a pair of support tables, a pair of high temperature heaters and a recovery heating drying component;

[0005] The drying box is installed on the equipment base, the support base is installed on the lower wall of the drying box, the drying inner box is installed inside the drying box through the support base, a pair of material brackets are installed in the drying inner box, a pair of worm gear air intake fans are installed on both sides of the drying box, the lower ends of a pair of air pipes are installed on the air outlets of a pair of worm gear air intake fans, a pair of support platforms are installed on the walls on both sides of the drying box, a pair of high-temperature heaters are installed on a pair of support platforms, the upper ends of a pair of air pipes are installed on a pair of high-temperature heaters, a pair of high-temperature heaters are connected to the drying inner box, and the recovery heating and drying assembly is installed on the drying box.

[0006] Preferably, a pair of protective doors are installed on the drying box.

[0007] Preferably, a pair of protective doors are mounted on the drying box via hinges.

[0008] Preferably, a pair of support platforms are provided with reinforcing ribs.

[0009] Preferably, the recycling, heating and drying assembly comprises: a pair of exhaust ports, an exhaust air duct, a plurality of guide baffles, a mounting plate, an exhaust fan and a pair of exhaust pipes;

[0010] A pair of exhaust ports are provided on the upper wall of the drying inner box, the exhaust duct is located in the cavity between the outer wall of the drying inner box and the inner wall of the drying box, a plurality of guide baffles are installed on the inner wall of the exhaust duct, a mounting plate is installed on the rear wall of the drying box, an exhaust fan is installed on the mounting plate, one end of a pair of exhaust pipes is installed on the exhaust fan, and the other end of a pair of exhaust pipes penetrates and extends into the exhaust duct.

[0011] Preferably, a dustproof grille is installed on the exhaust fan.

[0012] Beneficial Effects

[0013] The utility model provides an automated SCR denitrification catalyst pre-drying device, which has the following beneficial effects: this scheme uses a heat recovery type circulating drying structure, which discharges high-temperature water vapor by means of air pressure circulation and recycles the heat contained therein, and uses the heat of the high-temperature water vapor to assist in drying and heating, thereby achieving efficient energy utilization. This solves the problem that in the existing catalyst drying equipment, the moisture in the catalyst is dried out by heating during the drying process, and a large amount of moisture evaporates and floats in the drying chamber and cannot be discharged, which increases the internal humidity and affects the drying efficiency of the catalyst. At the same time, the water vapor generated by drying has a high temperature and cannot be utilized, resulting in a large amount of energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the front cross-sectional structure of an automated SCR denitration catalyst pre-drying device described in the utility model.

[0015] Figure 2 This is a schematic diagram of the main structure of an automated SCR denitration catalyst pre-drying device described in the utility model.

[0016] Figure 3 It is a rear structural schematic diagram of an automated SCR denitration catalyst pre-drying device described in the utility model.

[0017] In the figure: 1-equipment base; 2-drying box; 3-support base; 4-drying inner box; 5-material support; 6-worm gear air intake fan; 7-air supply pipe; 8-support platform; 9-high temperature heater; 10-protective door; 11-hinge; 12-reinforcement ribs; 13-exhaust port; 14-exhaust air duct; 15-guide baffle; 16-mounting plate; 17-exhaust fan; 18-exhaust pipe; 19-dustproof grille. DETAILED DESCRIPTION

[0018] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0019] Example: See Figure 1-3 The utility model provides a technical solution: an automated SCR denitration catalyst pre-drying device. This solution takes into account that the traditional catalyst drying equipment does not have an effective exhaust structure when in use, and the moisture generated by drying cannot be quickly and effectively discharged, which will affect the drying effect. In addition, the water vapor contains a large amount of heat, and direct discharge will cause energy waste. Based on the above content, this case sets the following technical means;

[0020] Specifically, the device at least includes an equipment base 1, a drying box 2, a support base 3, a drying inner box 4, a pair of material brackets 5, a pair of worm gear air intake fans 6, a pair of air delivery pipes 7, a pair of support platforms 8, a pair of high-temperature heaters 9 and a recovery heating and drying component;

[0021] The recycling, heating and drying assembly includes: a pair of exhaust ports 13, an exhaust air duct 14, a plurality of guide baffles 15, a mounting plate 16, an exhaust fan 17 and a pair of exhaust pipes 18;

[0022] The equipment base 1 supports the equipment as a whole. The cavity in the middle of the drying inner box 4 installed in the drying box 2 through the support seat 3 is the exhaust duct 14. The catalyst to be dried is placed on the material support 5 through a tray. The equipment is started after the protective door 10 is closed. The worm gear air intake fan 6 is started to inhale external air and transport it to the high-temperature heater 9 installed on the support platform 8 through the air pipe 7. High-temperature hot air is formed by high-temperature heating and transported to the inside of the drying inner box 4. The catalyst is dried by the high-temperature hot air to dry out the moisture inside the catalyst. At the same time, the hot air containing a large amount of water vapor is discharged into the exhaust duct 14 through the exhaust port opened on the top of the drying inner box 4. The flow time of the hot air in the exhaust duct 14 is increased by the guidance of the guide baffle 15. The heat contained in the hot air vapor assists in heating the catalyst, realizes energy recovery and utilization, and ensures the drying effect of the catalyst.

[0023] Further, the drying box 2 is installed on the equipment base 1, the support base 3 is installed on the lower wall surface of the drying box 2, the drying inner box 4 is installed inside the drying box 2 through the support base 3, a pair of material brackets 5 are installed in the drying inner box 4, a pair of worm gear air intake fans 6 are installed on both sides of the drying box 2, the lower ends of a pair of air pipes 7 are installed on the air outlets of a pair of worm gear air intake fans 6, a pair of support platforms 8 are installed on the walls on both sides of the drying box 2, a pair of high-temperature heaters 9 are installed on a pair of support platforms 8, the upper ends of a pair of air pipes 7 are installed on a pair of high-temperature heaters 9, a pair of high-temperature heaters 9 are connected to the drying inner box 4, and the recovery heating and drying assembly is installed on the drying box 2;

[0024] A pair of exhaust ports 13 are provided on the upper wall of the drying inner box 4, an exhaust duct 14 is located in a cavity between the outer wall of the drying inner box 4 and the inner wall of the drying box 2, a plurality of guide baffles 15 are installed on the inner wall of the exhaust duct 14, a mounting plate 16 is installed on the rear wall of the drying box 2, an exhaust fan 17 is installed on the mounting plate 16, one end of a pair of exhaust pipes 18 is installed on the exhaust fan 17, and the other end of a pair of exhaust pipes 18 penetrates and extends into the exhaust duct 14.

[0025] In the specific implementation process, further, the high-temperature heater 9 in the present technical solution is an electric heating tube heater, which is provided with an electric heating coil inside, and utilizes the process of converting electrical energy into thermal energy to heat the medium, thereby forming high-temperature hot air.

[0026] In the specific implementation process, further, a pair of protective doors 10 are installed on the drying box 2 to ensure the sealing of the equipment and the drying effect.

[0027] In the specific implementation process, further, a pair of protective doors 10 are installed on the drying box 2 through hinges 11.

[0028] In the specific implementation process, further, a pair of support platforms 8 are installed with reinforcing ribs 12 to increase the installation stability of the high-temperature heater 9.

[0029] In the specific implementation process, further, a dustproof grille 19 is installed on the exhaust fan 17.

[0030] 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. An automated SCR denitration catalyst pre-drying device, comprising: The equipment base (1) is characterized in that a heat recovery type circulating drying structure is installed on the equipment base (1); The heat recovery type circulation drying structure comprises: a drying box (2), a support base (3), a drying inner box (4), a pair of material supports (5), a pair of worm gear air intake fans (6), a pair of air delivery pipes (7), a pair of support platforms (8), a pair of high temperature heaters (9) and a recovery heating drying component; The drying box (2) is installed on the equipment base (1), the support base (3) is installed on the lower wall surface of the drying box (2), the drying inner box (4) is installed inside the drying box (2) through the support base (3), a pair of material brackets (5) are installed in the drying inner box (4), a pair of worm gear air intake fans (6) are installed on both sides of the drying box (2), the lower ends of a pair of air supply pipes (7) are installed on the air outlets of the pair of worm gear air intake fans (6), a pair of support platforms (8) are installed on the walls of both sides of the drying box (2), a pair of high-temperature heaters (9) are installed on the pair of support platforms (8), the upper ends of a pair of air supply pipes (7) are installed on the pair of high-temperature heaters (9), the pair of high-temperature heaters (9) are connected to the drying inner box (4), and the recovery heating and drying assembly is installed on the drying box (2).

2. The automatic SCR denitration catalyst pre-drying device according to claim 1, characterized in that: A pair of protective doors (10) are installed on the drying box (2).

3. The automatic SCR denitration catalyst pre-drying device according to claim 2 is characterized in that: A pair of protective doors (10) are mounted on the drying box (2) via hinges (11).

4. The automatic SCR denitration catalyst pre-drying device according to claim 1, characterized in that: A pair of support platforms (8) are provided with reinforcing ribs (12).

5. The automatic SCR denitration catalyst pre-drying device according to claim 1, characterized in that: The recycling, heating and drying assembly comprises: a pair of exhaust ports (13), an exhaust air duct (14), a plurality of guide baffles (15), a mounting plate (16), an exhaust fan (17) and a pair of exhaust pipes (18); A pair of exhaust ports (13) are provided on the upper wall surface of the drying inner box (4); an exhaust air duct (14) is located at a cavity between the outer wall surface of the drying inner box (4) and the inner wall surface of the drying box (2); a plurality of guide baffles (15) are installed on the inner wall surface of the exhaust air duct (14); a mounting plate (16) is installed on the rear wall surface of the drying box (2); an exhaust fan (17) is installed on the mounting plate (16); one end of a pair of exhaust pipes (18) is installed on the exhaust fan (17); and the other end of the pair of exhaust pipes (18) penetrates and extends into the exhaust air duct (14).

6. The automatic SCR denitration catalyst pre-drying device according to claim 5, characterized in that: A dustproof grille (19) is installed on the exhaust fan (17).

Images