White mud desulfurization system

Abstract

The utility model discloses a white mud desulfurization system. A large amount of white mud is generated by paper mills around a power plant, the white mud comes from waste residues generated by papermaking, the main component of the white mud is calcium carbonate, and the white mud can be completely used as a desulfurizing agent. The water content of the white mud reaches about 30%, and the white mud is convenient to transport. The device comprises a dissolving tank, a water supply pipeline and a mud supply pipeline, the water supply pipeline and the mud supply pipeline are respectively communicated with the dissolving tank, the dissolving tank is connected with a circulation pipeline for slurry circulation, a liquid outlet of the dissolving tank is communicated with at least one slurry supply pipeline, and the slurry supply pipeline is communicated with the dissolving tank. A slurry supply pump is mounted on each slurry supply pipeline, and each slurry supply pipeline is communicated to an absorption tower. The device is used for white mud desulfurization.

Description

Technical Field

[0001] This utility model relates to a white mud desulfurization system. Background Technology

[0002] Currently, the power plant uses purchased limestone as absorbent. The limestone slurry preparation system consists of two wet ball mill slurry systems, which are mutually redundant. Each mill's output is designed to meet 100% of the desulfurizer consumption for the two boilers under BMCR conditions. Two limestone slurry tanks are installed for each boiler. The effective volume of each tank is sufficient to meet the limestone slurry consumption of one boiler burning the designed desulfurization coal type for 6 hours under BMCR conditions. The two tanks are mutually redundant. Limestone slurry can be supplied to absorbers 1 and 2 respectively via limestone supply pumps. Currently, the desulfurization unit has a total of four limestone supply pumps (2 operational and 2 standby).

[0003] Paper mills near the power plant generate a large amount of white mud, which comes from waste residue in papermaking. Its main component is calcium carbonate, making it perfectly suitable as a desulfurizing agent. The white mud has a moisture content of approximately 30%, facilitating transportation. Compared to limestone-gypsum flue gas desulfurization, white mud desulfurization is more economical and efficient, offering higher desulfurizing agent activity, lower cost, and no secondary pollution. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a white mud desulfurization system.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A white mud desulfurization system comprises: a dissolving tank, a water supply pipeline, and a mud supply pipeline. The water supply pipeline and the mud supply pipeline are respectively connected to the dissolving tank. A circulation pipeline for slurry circulation is connected to the dissolving tank. The outlet of the dissolving tank is connected to at least one slurry supply pipeline. A slurry supply pump is installed on each slurry supply pipeline. Each slurry supply pipeline is connected to an absorption tower.

[0007] The white mud desulfurization system described above includes a circulation pump installed on the circulation pipeline.

[0008] The white mud desulfurization system described above includes two agitators installed on the dissolution tank for stirring the slurry inside the tank, and a densitometer fixed to the top of the dissolution tank.

[0009] The aforementioned white mud desulfurization system includes a water supply pump installed on the water supply pipeline. Beneficial effects

[0010] 1. The white mud purchased by this utility model is transported by truck to the unloading port of the pulping tank for unloading. At the unloading port, the white mud is supplied to the dissolving tank through the mud supply pipeline. At the same time, process water is introduced into the dissolving tank and stirred by the agitator to fully dissolve it. The slurry concentration is controlled within the set value range according to the matching densitometer. Then, the prepared slurry is pumped into the absorption tower through the slurry supply pump.

[0011] 2. This utility model uses white mud to make slurry, which is then used as a desulfurizing agent, significantly reducing the economic costs of power plants. Compared with the limestone-gypsum flue gas desulfurization method, white mud desulfurization is more economical and efficient, with higher desulfurizing agent activity, lower cost, and no secondary pollution. Attached Figure Description

[0012] Appendix Figure 1 This is a schematic diagram of the present invention;

[0013] In the diagram: 1. Process water; 2. Truck; 3. Water supply pump; 4. Slurry supply pump; 5. Slurry supply pipeline; 6. Absorption tower; 7. Circulation pipeline; 8. Circulation pump; 9. Dissolving tank; 10. Agitator; 11. Densitometer; 12. Sludge supply pipeline; 13. Water supply pipeline. Detailed Implementation

[0014] Reference Figure 1 A white mud desulfurization system comprises: a dissolving tank 9, a water supply pipeline 13, and a mud supply pipeline 12. The water supply pipeline and the mud supply pipeline are respectively connected to the dissolving tank. A circulation pipeline 7 for slurry circulation is connected to the dissolving tank. The outlet of the dissolving tank is connected to at least one slurry supply pipeline 5. A slurry supply pump 4 is installed on each of the slurry supply pipelines. Each of the slurry supply pipelines is connected to an absorption tower 6.

[0015] A circulation pump 8 is installed on the circulation pipeline.

[0016] Two agitators 10 are installed on the dissolving tank for stirring the slurry in the dissolving tank, and a densitometer 11 is fixed on the top of the dissolving tank.

[0017] A water supply pump 3 is installed on the water supply pipeline.

[0018] Working principle: Purchased white mud is transported by truck to the unloading port of the slurry tank for unloading. At the unloading port, the white mud is supplied to the dissolving tank through the mud supply pipeline. At the same time, process water is introduced into the dissolving tank. The water in the white mud tank should at least cover the agitator blades. The agitator is used to stir the mud to make it fully dissolved. The slurry concentration is controlled within the set value range according to the matching densitometer. Then, the prepared slurry is pumped into the absorption tower through the slurry supply pump.

Claims

1. A white mud desulfurization system, characterized in that: Its components include: a dissolving tank, a water supply pipeline, and a slurry supply pipeline. The water supply pipeline and the slurry supply pipeline are respectively connected to the dissolving tank. The dissolving tank is connected to a circulation pipeline for slurry circulation. The outlet of the dissolving tank is connected to at least one slurry supply pipeline. Each slurry supply pipeline is equipped with a slurry supply pump and each slurry supply pipeline is connected to an absorption tower.

2. The white mud desulfurization system according to claim 1, characterized in that: A circulation pump is installed on the circulation pipeline.

3. The white mud desulfurization system according to claim 2, characterized in that: Two agitators are installed on the dissolving tank for stirring the slurry inside the tank, and a densitometer is fixed on the top of the dissolving tank.

4. The white mud desulfurization system according to claim 3, characterized in that: A water supply pump is installed on the water supply pipeline.

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