Flue gas desulfurization and denitrification powder fluidized bed testing device for waste incineration power plant

Abstract

The utility model discloses a waste incineration power plant flue gas desulfurization and denitrification powder fluidized bed test device, which comprises a reaction outer cylinder and a reaction inner cylinder connected in the reaction outer cylinder, the reaction inner cylinder is connected with a feed pipe, a discharge pipe and a gas guide pipe, a spiral pipe is wound on the outer side of the reaction inner cylinder, a conversion box is connected with a cold air pipe and a hot air pipe, and the cold air pipe is connected with the hot air pipe. And the conversion box is connected with a conversion mechanism, the conversion mechanism comprises a motor, a rotating column and a sealing plate, the motor is used for driving the sealing plate and the rotating column to rotate synchronously, the sealing plate is matched with the end of the cold air pipe and the end of the hot air pipe, and the sealing plate is connected with a positioning mechanism used for positioning the sealing plate. The reaction inner cylinder is uniformly heated or cooled, the uniformity of heat transfer is improved, gas is discharged from the end part of the spiral pipe to the heat preservation cavity, the heat preservation effect on the reaction inner cylinder is achieved, the exchange with the external temperature is reduced, and the temperature regulation effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fluidized bed test technical field, concretely to a kind of powder fluidized bed test device for garbage incineration power plant flue gas desulfurization and denitrification. BACKGROUND

[0002] Garbage incineration is the process that makes garbage to be residue or molten solid material by proper thermal decomposition, combustion, melting and other reactions under high temperature oxidation. And there are a large amount of harmful substances in flue gas during combustion, and desulfurization and denitrification is the process of purifying harmful gases containing sulfur and nitrogen in flue gas generated during combustion to make the discharged gas meet the emission standard and prevent air pollution.

[0003] During the treatment process, the fluidized bed test device can be used for testing. The fluidized bed is a reactor that makes solid particles in a suspended state of movement by using gas or liquid to pass through the granular solid layer and carry out gas-solid phase reaction process or liquid-solid phase reaction process, including dispersed fluidized bed and clustered fluidized bed. Since the reaction in the fluidized bed reactor is actually carried out in emulsified phase, the gas exchange between gas bubbles and emulsified phase is very important, and the speed of interphase mass transfer and the speed of surface reaction rate are related to the selection of reasonable bed type and operating parameters.

[0004] When the fluidized bed is used, the temperature of the fluidized bed needs to be controlled, so different gas pipes need to be connected to introduce cold gas or hot gas to achieve the purpose of temperature adjustment. The existing gas pipeline extends into the inside of the fluidized bed, but the contact area between the pipeline and the material is limited, and the temperature adjustment range is not uniform enough, which reduces the adjustment efficiency. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of powder fluidized bed test device for garbage incineration power plant flue gas desulfurization and denitrification, with the advantages that it is convenient to position insulating block, it is convenient to lift, and it is flexible and convenient to operate, solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of powder fluidized bed test device for garbage incineration power plant flue gas desulfurization and denitrification, including reaction outer tube and the reaction inner tube connected in reaction outer tube, the reaction inner tube is connected with feed pipe, discharge pipe, gas guide pipe, spiral pipe is wound outside the reaction inner tube, and heat preservation cavity is arranged between reaction inner tube and reaction outer tube, one end of the spiral pipe is communicated in heat preservation cavity, the other end is connected with conversion box, the conversion box is connected with cold gas pipe, hot gas pipe, and conversion box is connected with for conversion mechanism, the conversion mechanism includes motor, rotating column, sealing plate, the motor is used to drive sealing plate, rotating column synchronous rotation, the end of sealing plate and cold gas pipe, hot gas pipe are matched, and sealing plate is connected with for sealing plate positioning positioning mechanism.

[0007] Preferably, the conversion mechanism further comprises a base, two sealing pads, the base is fixed to the outside of the reaction outer cylinder, the motor is connected to the top of the base, and the power output end of the motor is connected with the rotating column, and the sealing pads are connected to the side of the sealing plate.

[0008] Preferably, the end of the sealing plate is fixedly connected with the rotating column, and the rotating column is sealingly and rotatably connected in the conversion box.

[0009] Preferably, the positioning mechanism comprises a cylinder, a positioning head, a rotating disc and a plurality of positioning grooves, the cylinder is connected to the top of the conversion box, and the cylinder is used to drive the positioning head to move back and forth, the positioning head is matched with the positioning grooves, the positioning grooves are arranged on the outside of the rotating disc, and the rotating disc is connected with the top of the rotating column.

[0010] Preferably, the cross section of the positioning groove is a semicircular structure.

[0011] Preferably, the end of the cold gas pipe and the hot gas pipe is provided with a sealing surface, and the sealing surface is an inclined structure.

[0012] Preferably, the end of the spiral pipe is connected with a conveying pipeline, and the end of the conveying pipeline is communicated with the conversion box.

[0013] Preferably, the reaction outer cylinder is connected with an exhaust valve, and the exhaust valve is communicated with the heat preservation cavity.

[0014] Compared with the prior art, the utility model discloses the following beneficial effects: the utility model discloses a conversion mechanism, a positioning mechanism, different temperature gas can be conveyed to the spiral pipe through the conversion box, the spiral pipe heats or cools the reaction inner cylinder, the reaction inner cylinder is heated or cooled evenly, the uniformity of heat transfer is improved, the gas is discharged to the heat preservation cavity from the end of the spiral pipe, the heat preservation effect of the reaction inner cylinder is achieved, the exchange with the outside temperature is reduced, the temperature adjusting effect is improved, the motor can drive the sealing plate to rotate, the sealing plate is pressed on the end of the hot gas pipe or the cold gas pipe, the gas switching efficiency is improved, and the utility model has high practicability. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the perspective view of the utility model;

[0016] Figure 2 It is the partial view of Figure 1 ;

[0017] Figure 3 It is the reaction inner cylinder structure schematic view of the utility model;

[0018] Figure 4 It is the conversion mechanism structure schematic view of the utility model;

[0019] Figure 5 It is the internal structure schematic view of the conversion box of the utility model.

[0020] In the figure: 1, reaction outer cylinder; 2, conversion box; 3, base; 4, feed pipe; 5, exhaust valve; 6, conveying pipeline; 7, cold gas pipe; 8, hot gas pipe; 9, cylinder; 10, positioning head; 11, rotary disc; 12, positioning groove; 13, motor; 14, discharge pipe; 15, gas guide pipe; 16, reaction inner cylinder; 17, spiral pipe; 18, rotating column; 19, sealing plate; 20, sealing surface; 21, sealing pad. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figures 1 to 5 The utility model provides a kind of for garbage incineration power plant flue gas desulfurization and denitrification powder fluidized bed test device, including reaction outer cylinder 1 and the reaction inner cylinder 16 connected in reaction outer cylinder 1, reaction inner cylinder 16 is connected with feed pipe 4, discharge pipe 14, gas guide pipe 15, when using, first by feed pipe 4 import raw material, subsequently by gas guide pipe 15 join working air to make raw material form fluidized state, finally by discharge pipe 14 discharge.Reaction inner cylinder 16 outside is wound with spiral pipe 17, and reaction inner cylinder 16 and reaction outer cylinder 1 between being provided with heat preservation cavity, spiral pipe 17 one end is conducted in heat preservation cavity, other end is connected with conversion box 2, conversion box 2 is connected with cold gas pipe 7, hot gas pipe 8, two gas pipes can be with corresponding temperature gas is transported to spiral pipe 17, make reaction inner cylinder 16 be heated or cooled evenly, improve the uniformity of heat transfer, and gas is discharged from the end of spiral pipe 17 to heat preservation cavity, to reaction inner cylinder 16 play heat preservation effect, reduce the exchange with outside temperature, improve temperature control effect.Conversion box 2 is connected with for conversion mechanism, conversion mechanism includes motor 13, rotating column 18, sealing plate 19, motor 13 is used to drive sealing plate 19, rotating column 18 synchronous rotation, sealing plate 19 and the end of cold gas pipe 7, hot gas pipe 8 are matched, and sealing plate 19 is connected with for the positioning mechanism of sealing plate 19 positioning.

[0023] The conversion mechanism further comprises a base 3 fixed to the outside of the reaction outer cylinder 1, a motor 13 connected to the top of the base 3, and the power output end of the motor 13 connected to the rotating column 18, and two sealing pads 21 connected to the side of the sealing plate 19. When the reaction inner cylinder 16 needs to be heated, the motor 13 drives the rotating column 18 to rotate, synchronously driving the sealing plate 19 to rotate, so that the sealing plate 19 is pressed against the cold gas pipe 7, realizing the plugging of the cold gas pipe 7. Then the hot gas pipe 8 delivers hot gas into the conversion box 2, and through the delivery pipeline 6 to the spiral pipe 17, realizing the heating of the reaction inner cylinder 16. When the reaction inner cylinder 16 needs to be cooled, the sealing plate 19 is pressed against the hot gas pipe 8, realizing the plugging of the hot gas pipe 8. At this time, the cold gas pipe 7 is connected to the spiral pipe 17, facilitating the cooling of the reaction inner cylinder 16, which is simple and convenient to operate.

[0024] The end of the sealing plate 19 is fixedly connected with the rotating column 18, and the rotating column 18 is sealingly and rotatably connected in the conversion box 2, avoiding gas leakage.

[0025] The positioning mechanism comprises a gas cylinder 9, a positioning head 10, a rotating disc 11, and a plurality of positioning grooves 12. The gas cylinder 9 is connected to the top of the conversion box 2 and is used to drive the positioning head 10 to move back and forth. The positioning head 10 is matched with the positioning grooves 12, which are arranged on the outside of the rotating disc 11. The rotating disc 11 is connected with the top of the rotating column 18. When the sealing plate 19 is in the appropriate position, the gas cylinder 9 drives the positioning head 10 to move forward, so that the positioning head 10 is pressed against the positioning grooves 12 of the rotating disc 11, realizing the locking of the rotating disc 11, improving the stability of the rotating column 18 and the sealing plate 19, and making the sealing plate 19 pressed against the end of the hot gas pipe 8 or the cold gas pipe 7. At this time, the motor 13 stops.

[0026] The cross section of the positioning groove 12 is semicircular structure.

[0027] The end of the cold gas pipe 7 and the hot gas pipe 8 is provided with a sealing surface 20, which is an inclined structure. The cooperation of the sealing surface 20 and the sealing pad 21 can improve the sealing performance of the sealing plate 19 connected with the hot gas pipe 8 or the cold gas pipe 7, achieving good plugging effect.

[0028] The end of the spiral pipe 17 is connected with the delivery pipeline 6, and the end of the delivery pipeline 6 is connected to the conversion box 2.

[0029] The reaction outer cylinder 1 is connected with an exhaust valve 5, which is connected to the heat preservation cavity. When the internal pressure of the heat preservation cavity is too high, the gas can be discharged through the exhaust valve 5.

[0030] Working principle: in use, cold gas pipe 7 or hot gas pipe 8 will be corresponding gas through the conversion box 2, delivery pipe 6 is delivered to the spiral pipe 17, and the spiral pipe 17 is wound on the outside of the reaction inner cylinder 16, so that the reaction inner cylinder 16 is heated or cooled uniformly, improves the uniformity of heat transfer, and the gas is discharged from the end of the spiral pipe 17 to the heat preservation cavity, plays a heat preservation effect on the reaction inner cylinder 16, reduces the exchange with the outside temperature. When switching temperature, if the reaction inner cylinder 16 needs to be heated, the motor 13 drives the rotating column 18 to rotate, synchronously drives the sealing plate 19 to rotate, so that the sealing plate 19 is pressed tightly on the cold gas pipe 7, realizes the plugging of the cold gas pipe 7, and the hot gas pipe 8 is connected to the conversion box 2, the hot gas pipe 8 delivers hot gas to the spiral pipe 17, realizes the heating operation of the reaction inner cylinder 16. At the same time, the cylinder 9 drives the positioning head 10 to move forward, so that the positioning head 10 is pressed tightly in the corresponding positioning groove 12, realizes the locking of the rotating disc 11, prevents the rotating column 18 and the sealing plate 19 from loosening, improves the tightness of the sealing plate 19 and the cold gas pipe 7, at this time the motor 13 is in the state of stop, simple and convenient operation.

[0031] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A kind of powder fluidized bed test device for waste incineration power plant flue gas desulfurization and denitrification, including reaction outer cylinder (1) and the reaction inner cylinder (16) being connected in reaction outer cylinder (1), the reaction inner cylinder (16) is connected with feed pipe (4), discharge pipe (14), gas guide pipe (15), it is characterized in that, The reaction inner cylinder (16) is wrapped with a spiral pipe (17), and a heat preservation cavity is arranged between the reaction inner cylinder (16) and the reaction outer cylinder (1), one end of the spiral pipe (17) is communicated with the heat preservation cavity, and the other end is connected with a conversion box (2), the conversion box (2) is connected with a cold gas pipe (7) and a hot gas pipe (8), and the conversion box (2) is connected with a conversion mechanism, the conversion mechanism comprises a motor (13), a rotating column (18) and a sealing plate (19), the motor (13) is used for driving the sealing plate (19) and the rotating column (18) to rotate synchronously, the sealing plate (19) is matched with the end portions of the cold gas pipe (7) and the hot gas pipe (8), and the sealing plate (19) is connected with a positioning mechanism for positioning the sealing plate (19).

2. The device according to claim 1, characterized in that, The conversion mechanism further comprises a base (3) and two sealing gaskets (21), the base (3) is fixed to the outer side of the reaction outer cylinder (1), the motor (13) is connected to the top of the base (3), and the power output end of the motor (13) is connected with the rotating column (18), and the sealing gaskets (21) are connected to the side surface of the sealing plate (19).

3. The device according to claim 2, characterized in that, The end portion of the sealing plate (19) is fixedly connected with the rotating column (18), and the rotating column (18) is sealingly and rotatably connected in the conversion box (2).

4. The device according to claim 1, characterized in that, The positioning mechanism comprises a cylinder (9), a positioning head (10), a rotating disc (11) and a plurality of positioning grooves (12), the cylinder (9) is connected to the top of the conversion box (2), and the cylinder (9) is used for driving the positioning head (10) to move back and forth, the positioning head (10) is matched with the positioning grooves (12), the positioning grooves (12) are arranged on the outer side of the rotating disc (11), and the rotating disc (11) is connected with the top of the rotating column (18).

5. The device according to claim 4, characterized in that, The cross section of the positioning groove (12) is a semicircular structure.

6. The device according to claim 1, characterized in that, The end portions of the cold gas pipe (7) and the hot gas pipe (8) are provided with sealing surfaces (20), and the sealing surfaces (20) are inclined structures.

7. The device according to claim 1, characterized in that, The end portion of the spiral pipe (17) is connected with a conveying pipeline (6), and the end portion of the conveying pipeline (6) is communicated with the conversion box (2).

8. The device according to claim 1, characterized in that, The reaction outer cylinder (1) is connected with an exhaust valve (5), and the exhaust valve (5) is communicated with the heat preservation cavity.

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