Desulfurization environment-friendly treatment equipment for biomass power plant

Abstract

The utility model discloses desulfurization environment-friendly treatment equipment for a biomass power plant, which comprises a desulfurization cylinder, a smoke inlet pipe is embedded on one side wall surface of the desulfurization cylinder, a blow-off pipe is embedded on the other side wall surface of the desulfurization cylinder and is close to the lower end, and two circular spraying pipe frames are assembled in the desulfurization cylinder and are close to the upper end; a plurality of circular spraying pipe frames are respectively assembled on the upper wall of the desulfurization cylinder, a plurality of spraying heads are respectively assembled on each circular spraying pipe frame, a liquid storage tank is assembled on the rear wall of the desulfurization cylinder, two suction pumps are assembled in the liquid storage tank, and a guide pipe is respectively connected between each suction pump and each circular spraying pipe frame. According to the device, multi-stage spraying is adopted, the spraying area is increased, so that smoke is fully wetted, demisting is carried out through the baffle plate, the humidity of smoke is reduced, desulfurization detection is carried out in the smoke exhaust process, the smoke is exhausted when the smoke is detected to be qualified, and backflow is carried out when the smoke is detected to be unqualified to carry out smoke desulfurization work again.

Description

Technical Field

[0001] This utility model relates to the field of desulfurization and environmental protection technology, specifically to a desulfurization and environmental protection equipment for a biomass power plant. Background Technology

[0002] During the power generation process, biomass power plants generate a large amount of sulfur-containing waste gas from fuel combustion. If this gas is not effectively treated and is directly emitted, it will cause serious pollution to the atmospheric environment.

[0003] Existing desulfurization and environmental protection equipment mainly focuses on desulfurization technology. However, even after desulfurization, a small amount of sulfur dioxide will still remain in the flue gas. Accumulated sulfur dioxide will pollute the environment over time. Furthermore, existing water spraying desulfurization methods mostly use single-stage water spraying, which has low desulfurization efficiency and high energy consumption. Sulfur dioxide will still be present in the relatively humid flue gas. There may already be technical solutions to solve the above-mentioned technical problems. Therefore, this case aims to provide a replacement or alternative technical solution. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a desulfurization and environmental protection treatment device for biomass power plants. It solves the problem that existing desulfurization and environmental protection treatment devices mostly focus on desulfurization technology, but after the flue gas is desulfurized, a small amount of sulfur dioxide will still exist in the flue gas. These small amounts accumulate and long-term emissions will still pollute the environment. Furthermore, existing water spraying desulfurization devices mostly use single-stage water spraying, which has low desulfurization efficiency, high energy consumption, and still contains sulfur dioxide in relatively humid flue gas.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a desulfurization and environmental protection treatment device for a biomass power plant, comprising a desulfurization cylinder, an inlet pipe embedded on one side wall of the desulfurization cylinder, a drain pipe embedded on the other side wall near the lower end of the desulfurization cylinder, two circular spray pipe frames installed inside the desulfurization cylinder near the upper end, each circular spray pipe frame being equipped with several spray heads, a liquid storage tank installed on the rear wall of the desulfurization cylinder, two suction pumps installed in the liquid storage tank, each suction pump being connected to each circular spray pipe frame by a conduit, and a flue gas detection structure installed on the upper wall of the desulfurization cylinder.

[0006] Preferably, the flue gas detection structure includes a flue gas storage box, a flue gas exhaust pipe, a first solenoid valve, a return pipe, two second solenoid valves, and a gas desulfurization concentration detection sensor.

[0007] The flue gas storage box is installed on the upper wall of the desulfurization cylinder, the flue gas exhaust pipe is embedded in the upper wall of the flue gas storage box and near one end, the first solenoid valve is installed on the flue gas exhaust pipe, the return pipe is installed between the flue gas storage box and the desulfurization cylinder, two second solenoid valves are installed on the return pipe, and the gas desulfurization concentration detection sensor is installed on the front wall of the flue gas storage box.

[0008] Preferably, the sewage pipe is equipped with a third solenoid valve.

[0009] Preferably, a baffle plate is installed inside the desulfurization cylinder and above the two circular spray pipe supports.

[0010] Preferably, the exhaust pipe is equipped with an impurity filter screen.

[0011] Preferably, two reinforcing rods are installed between the reflux pipe and the desulfurization cylinder. Beneficial effects

[0012] This utility model provides a desulfurization and environmental protection treatment device for biomass power plants. It has the following beneficial effects: This device adopts multi-stage spraying to increase the spray area and fully wet the flue gas. Furthermore, it uses baffles for demisting, reducing the humidity of the flue gas. During the flue gas discharge process, desulfurization detection is performed. If the detection is qualified, the flue gas is discharged; if it fails, it is recirculated for repeated desulfurization. This solves the problem that existing desulfurization and environmental protection treatment equipment mainly focuses on desulfurization technology, but after desulfurization, a small amount of sulfur dioxide still remains in the flue gas. Accumulated sulfur dioxide can pollute the environment over time. Moreover, existing water spraying systems often use single-stage water spraying, resulting in low desulfurization efficiency, high energy consumption, and the continued presence of sulfur dioxide in relatively humid flue gas. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a desulfurization and environmental protection treatment device for a biomass power plant according to the present invention.

[0014] Figure 2 This is a side view cross-sectional structural diagram of a desulfurization and environmental protection treatment device for a biomass power plant according to the present invention.

[0015] Figure 3 This is a top view schematic diagram of the desulfurization and environmental protection treatment equipment for a biomass power plant according to the present invention.

[0016] In the diagram: 1-Desulfurization cylinder; 2-Inlet pipe; 3-Outlet pipe; 4-Circular spray pipe frame; 5-Spray head; 6-Storage tank; 7-Suction pump; 8-Conduit; 9-Storage box; 10-Outlet pipe; 11-First solenoid valve; 12-Return pipe; 13-Second solenoid valve; 14-Gas desulfurization concentration detection sensor; 15-Third solenoid valve; 16-Baffle plate; 17-Impurity filter screen; 18-Reinforcing rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without explaining the electrical control.

[0019] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Example: Refer to Figure 1-3 A desulfurization and environmental protection treatment device for a biomass power plant includes a desulfurization cylinder 1. An inlet pipe 2 is embedded on one side wall of the desulfurization cylinder 1, and a drain pipe 3 is embedded on the other side wall near the lower end. Two circular spray pipe frames 4 are installed inside the desulfurization cylinder 1 near the upper end, each circular spray pipe frame 4 being equipped with several spray heads 5. A liquid storage tank 6 is installed on the rear wall of the desulfurization cylinder 1, and two suction pumps 7 are installed inside the liquid storage tank 6. Each suction pump 7 is connected to each circular spray pipe frame 4 by a conduit 8. A flue gas detection structure is installed on the upper wall of the desulfurization cylinder 1. The flue gas detection structure includes a smoke storage box 9, an exhaust pipe 10, a first solenoid valve 11, a return pipe 12, and two... The second solenoid valve 13 and the gas desulfurization concentration detection sensor 14; the flue gas storage box 9 is installed on the upper wall of the desulfurization cylinder 1, the flue gas pipe 10 is embedded in the upper wall of the flue gas storage box 9 and near one end, the first solenoid valve 11 is installed on the flue gas pipe 10, the return pipe 12 is installed between the flue gas storage box 9 and the desulfurization cylinder 1, the two second solenoid valves 13 are installed on the return pipe 12, and the gas desulfurization concentration detection sensor 14 is installed on the front wall of the flue gas storage box 9; the sewage pipe 3 is equipped with a third solenoid valve 15; the desulfurization cylinder 1 is equipped with a baffle plate 16 inside the desulfurization cylinder 1 and above the two circular spray pipe frames 4; the flue gas pipe 10 is equipped with an impurity filter screen 17; and the return pipe 12 and the desulfurization cylinder 1 are equipped with two reinforcing rods 18.

[0021] The specific working principle is as follows:

[0022] The operator connects the exhaust pipe of the combustion equipment to the inlet pipe 2 of this device. After connection, the external power supply is turned on to power the device, and the programmable controller installed on it controls the operation. The flue gas enters the desulfurization cylinder 1 through the inlet pipe 2. The suction pump 7 installed in the liquid storage tank 6 draws liquid through the conduit 8 into the circular spray pipe frame 4, and then sprays it out from the spray head 5, performing multi-stage humidification of the flue gas, so that the flue gas and water can fully contact each other. A large amount of sulfur dioxide in the flue gas dissolves in the water and reacts and precipitates. The moist flue gas flows upward through the baffle 16. The baffle 16 changes the flow direction of the flue gas, causing the droplets in the flue gas to collide, condense and separate. The treated flue gas then enters the desulfurization cylinder 1. The flue gas enters the flue gas storage box 9, where a gas desulfurization concentration detection sensor 14 is installed. If the concentration is within acceptable limits, a signal is sent, and the programmable controller receives the signal and issues a control command. The first solenoid valve 11 installed on the exhaust pipe 10 opens to discharge the flue gas, and the impurity filter screen 17 filters impurities from the flue gas. If the gas desulfurization concentration detection sensor 14 detects an unacceptable concentration, the first solenoid valve 11 will not open, and the second solenoid valve 13 installed on the return pipe 12 will open, allowing the flue gas to be returned for secondary desulfurization. When it is necessary to discharge pollutants after a certain period of desulfurization, the third solenoid valve 15 is opened by the programmable controller to discharge pollutants. The reinforcing rod 18 is used to enhance the stability of the return pipe 12.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A desulfurization and environmental protection treatment device for a biomass power plant, comprising a desulfurization cylinder (1), characterized in that, A flue gas inlet pipe (2) is embedded on one side wall of the desulfurization cylinder (1), and a sewage pipe (3) is embedded on the other side wall of the desulfurization cylinder (1) near the lower end. Two circular spray pipe frames (4) are installed inside the desulfurization cylinder (1) near the upper end. Each circular spray pipe frame (4) is equipped with several spray heads (5). A liquid storage tank (6) is installed on the rear wall of the desulfurization cylinder (1). Two suction pumps (7) are installed inside the liquid storage tank (6). Each suction pump (7) is connected to each circular spray pipe frame (4) by a conduit (8). A flue gas detection structure is installed on the upper wall of the desulfurization cylinder (1).

2. The desulfurization and environmental protection equipment for a biomass power plant according to claim 1, characterized in that, The flue gas detection structure includes a flue gas storage box (9), a flue gas exhaust pipe (10), a first solenoid valve (11), a return pipe (12), two second solenoid valves (13), and a gas desulfurization concentration detection sensor (14). The flue gas storage box (9) is placed on the upper wall of the desulfurization cylinder (1), the exhaust pipe (10) is embedded in the upper wall of the flue gas storage box (9) and near one end, the first solenoid valve (11) is placed on the exhaust pipe (10), the return pipe (12) is placed between the flue gas storage box (9) and the desulfurization cylinder (1), the two second solenoid valves (13) are placed on the return pipe (12), and the gas desulfurization concentration detection sensor (14) is placed on the front wall of the flue gas storage box (9).

3. The desulfurization and environmental protection equipment for a biomass power plant according to claim 1, characterized in that, The sewage pipe (3) is equipped with a third solenoid valve (15).

4. The desulfurization and environmental protection equipment for a biomass power plant according to claim 1, characterized in that, A baffle plate (16) is installed inside the desulfurization cylinder (1) and above the two circular spray pipe frames (4).

5. The desulfurization and environmental protection equipment for a biomass power plant according to claim 2, characterized in that, The exhaust pipe (10) is equipped with an impurity filter screen (17).

6. The desulfurization and environmental protection equipment for a biomass power plant according to claim 2, characterized in that, Two reinforcing rods (18) are installed between the return pipe (12) and the desulfurization cylinder (1).

Images