Desulfurizing agent blowing device for preventing hardening

Abstract

The utility model relates to the technical field of environmental protection equipment, in particular to a hardening prevention desulfurizer blowing device which comprises a powder bin, a transfer bin, a spiral conveyor, a dehumidification box and a Roots blower, a dustproof filter screen is arranged at an inlet of the dehumidification box, the dehumidification box comprises a shell, a plurality of dehumidification plates are placed in the shell and are arranged in parallel, and the Roots blower is arranged in the shell. The dehumidification plate is arranged in the dehumidification box to form a parallel channel for air circulation, the dehumidification plate is formed by sintering clay, a dehumidification material and an adhesive, an electric heating element is arranged in the dehumidification plate, an inlet of the Roots blower is connected to the dehumidification box, an outlet of the Roots blower is provided with a desulfurizing agent conveying pipeline and connected to desulfurizing agent using equipment, the outlet of the Roots blower is further connected with a blow-down pipe, and the blow-down pipe is communicated with the dehumidification box. And a valve is arranged. Through the moisture absorption treatment of the moisture absorption box, the moisture content in the air is greatly reduced, the hardening of a desulfurizing agent can be prevented, and the desulfurizing agent is regenerated through heating and can be repeatedly used.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection equipment, in particular to a desulfurizing agent blowing device for preventing hardening. Background Art

[0002] Wet desulfurization is an important environmental protection measure in thermal power plants. It is used to remove sulfur oxides in exhaust gas. The desulfurizers used are generally in powder form, such as 200-mesh limestone powder, 800-mesh baking soda powder, etc. Their common feature is that they are easy to become compacted after absorbing moisture. Therefore, special attention should be paid to them during storage and transportation to avoid compaction and blockage in silos or pipelines.

[0003] In the prior art, the gas of the desulfurizer blowing system is generally obtained directly from the air. When the air humidity is high, the water vapor in the air is easy to combine with the desulfurizer material and form a hardening in the pipeline, which can easily cause pipeline blockage and affect the normal supply of the desulfurizer. Therefore, a desulfurizer blowing device that can prevent hardening is urgently needed. Utility Model Content

[0004] The utility model solves the problem that the desulfurizer is easy to be condensed and block the pipeline in the prior art, and provides a desulfurizer blowing device which can prevent condensation.

[0005] The utility model is implemented by the following technical scheme: a desulfurizing agent blowing device for preventing hardening comprises a powder bin for storing desulfurizing agent, a discharge port is arranged below the powder bin, a plug valve and a star-shaped feeder are arranged at the discharge port,

[0006] The transfer bin is installed below the star-shaped feeder, and a stirrer is provided in the transfer bin.

[0007] The screw conveyor is installed at the outlet of the transfer bin, and the outlet of the screw conveyor is connected to the desulfurization agent delivery pipeline through a pipeline.

[0008] A dehumidification box, the entrance of which is provided with a dust filter, the dehumidification box comprises a shell, a plurality of dehumidification plates are placed in the shell, the dehumidification plates are arranged in parallel to form parallel channels for air circulation, the dehumidification plates are made of clay, dehumidification material and adhesive by firing, and an electric heating element is arranged in the dehumidification plate.

[0009] The inlet of the Roots blower is connected to the dehumidification box, and the outlet is provided with a desulfurization agent delivery pipeline connected to the desulfurization agent use equipment. The outlet of the Roots blower is also connected to a vent pipe and is equipped with a valve.

[0010] Furthermore, two Roots blowers are arranged in parallel and connected to the desulfurizing agent delivery pipeline through a branch pipeline, and a shut-off valve is arranged on the branch pipeline.

[0011] Furthermore, the desulfurizing agent delivery pipeline is connected to a nitrogen interface and is equipped with a shut-off valve.

[0012] Furthermore, a humidity sensor is provided on the desulfurizing agent delivery pipeline.

[0013] Furthermore, the dehumidification plate component includes activated alumina.

[0014] Furthermore, the shell is coated with a heat preservation element.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model is provided with a dehumidification box, the entrance of which is provided with a dust filter, and a plurality of dehumidification plates 402 are arranged in parallel to form parallel channels for air circulation. After the air enters the dehumidification box, the air passes through the gaps between the plurality of dehumidification plates, and the water vapor in the air contacts the dehumidification plates and is adsorbed by the dehumidification plates, thereby reducing the humidity of the air and preventing the desulfurizer from being calcified. When the activated alumina in the dehumidification plates is close to saturation of moisture absorption, the electric heating element is turned on and heated to 180-350°C to regenerate the activated alumina, and moisture absorption work can be resumed. The utility model can realize the adsorption and removal of water vapor in the air, and can be repeatedly used by heating and regeneration.

[0017] 2. The utility model is also connected with a nitrogen interface. When the air humidity is too high and exceeds the operating load of the dehumidification box, nitrogen is introduced to ensure 0 humidity and stable desulfurization agent delivery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the installation of a desulfurizing agent blowing device for preventing hardening according to the utility model;

[0019] Figure 2 for Figure 1 A partial enlarged view of

[0020] Figure 3 for Figure 2 A top view of

[0021] Figure 4 This is a schematic diagram of the structure of the dehumidification box.

[0022] In the figure: 1 powder bin; 2 transfer bin; 3 screw conveyor; 4 dehumidification box; 401 shell; 402 dehumidification plate; 403 dust filter; 404 electric heating element; 405 insulation element;

[0023] 5 Roots blower; 6 gate valve; 7 star feeder; 8 agitator; 9 desulfurizer delivery pipeline; 10 branch pipeline; 11 humidity sensor; 12 nitrogen interface. DETAILED DESCRIPTION

[0024] 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.

[0025] like Figure 1-4 As shown, a desulfurizer blowing device for preventing compaction includes a powder bin 1 for storing desulfurizer. The lower end of the powder bin 1 is a cone with a cone angle of no more than 60°, and a discharge port is provided at the bottom. A gate valve 6 and a star feeder 7 are connected below the discharge port. The star feeder 7 can be rotated to control the supply amount.

[0026] The transfer bin 2 is installed below the star-shaped feeder 7. A stirrer 8 is provided in the transfer bin 2. The desulfurizer coming out of the star-shaped feeder 7 will enter the transfer bin 2 and be stirred by the stirrer 8 to keep the desulfurizer in a fluffy state to avoid compaction.

[0027] The screw conveyor 3 is installed at the outlet of the transfer bin 2. The outlet of the screw conveyor 3 is connected to the desulfurizing agent delivery pipeline 9 through a pipeline, and the desulfurizing agent can be evenly delivered from the transfer bin 2 to the desulfurizing agent delivery pipeline 9.

[0028] The dehumidification box 4 has a built-in hygroscopic material, and a dust filter 403 is provided at its entrance. The dust filter 403 can filter out dust in the air to prevent dust from covering the hygroscopic material and affecting the hygroscopic effect. The hygroscopic material absorbs water vapor in the air, reduces air humidity, and effectively prevents the desulfurizer from hardening.

[0029] The dehumidification box 4 has a dust filter 403 at its entrance. The dehumidification box 4 includes a shell 401. A plurality of dehumidification plates 402 are placed in the shell 401. The dehumidification plates 402 are arranged in parallel to form parallel channels for air circulation. The dehumidification plates 402 are made of clay, dehumidification material, and adhesive by firing. In this scheme, the dehumidification material is activated alumina. The dehumidification plates 402 are provided with electric heating elements 404, generally using resistance heating wires. After the air enters the dehumidification box, the air passes through the gaps between the multiple dehumidification plates 402. The water vapor in the air contacts the dehumidification plates 402 and is adsorbed by the dehumidification plates, thereby reducing the humidity of the air and avoiding the desulfurizer from being caking. When the activated alumina in the dehumidification plates 402 is close to being saturated with moisture, the electric heating element 404 is turned on. After being heated to 180-350°C, the activated alumina is regenerated and moisture absorption can be resumed.

[0030] The inlet of the Roots blower 5 is connected to the dehumidification box 4, and the outlet is provided with a desulfurization agent delivery pipeline 9, which is connected to the desulfurization agent using equipment. The Roots blower 5 provides power to continuously input air into the desulfurization agent delivery pipeline 9 to achieve pneumatic delivery. The outlet of the Roots blower 5 is also connected to a vent pipe 13 and is equipped with a valve. When the desulfurization agent is normally delivered, the vent pipe 13 is closed, and when the dehumidification plate 403 is heated and regenerated, the vent pipe 14 is opened to discharge the high-humidity hot air in time.

[0031] In actual application, two Roots blowers 5 are arranged in parallel, connected to the desulfurizing agent delivery pipeline 9 through a branch pipeline 10, and a shut-off valve is arranged on the branch pipeline 10. In this solution, one of the two Roots blowers 5 is in operation and the other is in standby, and regular switching can facilitate maintenance and ensure long-term non-stop operation of the equipment.

[0032] In practical applications, the desulfurizing agent delivery pipeline 9 is connected to a nitrogen interface 12 and is equipped with a shut-off valve. In this solution, when the air humidity is too high and exceeds the operating load of the dehumidification box, nitrogen is introduced to ensure zero humidity and stable desulfurizing agent delivery.

[0033] In practical applications, a humidity sensor 11 is provided on the desulfurizing agent delivery pipeline 9, and the humidity sensor is used to determine whether to perform the regeneration of the activated alumina in the dehumidification box or to use nitrogen delivery.

[0034] In practical applications, the shell 401 is coated with a heat preservation element 405 to facilitate maintaining the temperature during the regeneration of the activated alumina.

[0035] In summary, the desulfurizer blowing device for preventing compaction described in the utility model can greatly reduce the water content in the air through the moisture absorption treatment of the moisture absorption box, thereby preventing the desulfurizer from compacting.

[0036] The above shows and describes the basic principles, main features and advantages of the utility model. The technicians in this industry should understand that the above implementation is only to illustrate the technical concept and characteristics of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it, and it cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A desulfurizing agent blowing device for preventing hardening, characterized in that: It comprises a powder bin (1) for storing desulfurizing agent, a discharge port is arranged below the powder bin (1), a gate valve (6) and a star-shaped feeder (7) are arranged at the discharge port, The transfer bin (2) is installed below the star-shaped feeder (7), and a stirrer (8) is arranged in the transfer bin (2). A screw conveyor (3) is installed at the outlet of the transfer bin (2), and the outlet of the screw conveyor (3) is connected to the desulfurizing agent delivery pipeline (9) through a pipeline. A dehumidification box (4) is provided with a dust filter (403) at its inlet. The dehumidification box (4) comprises a shell (401). A plurality of dehumidification plates (402) are placed in the shell (401). The dehumidification plates (402) are arranged in parallel to form parallel channels for air circulation. The dehumidification plates (402) are made of clay, dehumidification material and adhesive by firing. An electric heating element (404) is provided in the dehumidification plates (402). The inlet of the Roots blower (5) is connected to the dehumidification box (4), and the outlet is provided with a desulfurization agent delivery pipeline (9) connected to the desulfurization agent using equipment. The outlet of the Roots blower (5) is also connected to a vent pipe (13) and is equipped with a valve.

2. A desulfurizing agent blowing device for preventing hardening according to claim 1, characterized in that: Two Roots blowers (5) are arranged in parallel and connected to the desulfurizing agent delivery pipeline (9) via a branch pipeline (10), and a shut-off valve is arranged on the branch pipeline (10).

3. A desulfurizing agent blowing device for preventing hardening according to claim 1, characterized in that: The desulfurizing agent delivery pipeline (9) is connected to a nitrogen interface (12) and is equipped with a shut-off valve.

4. A desulfurizing agent blowing device for preventing hardening according to claim 1, characterized in that: The dehumidification plate (402) comprises activated alumina.

5. A desulfurizing agent blowing device for preventing hardening according to claim 1, characterized in that: The desulfurizing agent delivery pipeline (9) is provided with a humidity sensor (11).

6. A desulfurizing agent blowing device for preventing hardening according to claim 1, characterized in that: The shell (401) is coated with a heat preservation element (405).

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