Flue gas fixed bed desulfurization and denitrification integrated device

Abstract

The invention discloses a flue gas fixed bed desulfurization and denitrification integrated device which comprises a flue gas guide pipe, a tank body penetrates through the interior of the flue gas guide pipe, a flue gas buffer chamber, a desulfurization chamber, a denitrification chamber and a secondary desulfurization and denitrification chamber are arranged in the tank body, and a circular sealing ring is fixedly connected to the outer surface of the lower end of the flue gas guide pipe; the lower surface of the circular sealing ring is fixedly connected with a motor; a mounting through hole I, a mounting through hole II, a mounting through hole III and a mounting through hole IV are respectively formed in the flue gas buffer chamber, the desulfurization chamber, the denitrification chamber and the secondary desulfurization and denitrification chamber; a dust suppression net, a calcium-based granular desulfurization layer, a denitration layer, a secondary desulfurization layer and a secondary denitration layer are tightly attached to the inner surfaces of the first mounting through hole, the second mounting through hole, the third mounting through hole and the fourth mounting through hole respectively, and stage-by-stage filtration and separation are carried out according to different components of the dust suppression net, the calcium-based granular desulfurization layer, the denitration layer, the secondary desulfurization layer and the secondary denitration layer; and compared with the mode that the desulfurization and denitrification agent is directly sprayed on the untreated flue gas, the effect is better.

Description

Technical Field

[0001] The present invention relates to a subdivision of air pollution control, and in particular to an integrated flue gas fixed-bed desulfurization and denitrification device. Background Art

[0002] A flue gas fixed-bed integrated desulfurization and denitrification device can simultaneously treat pollutants such as sulfur dioxide and nitrogen oxides in industrial flue gas. Through adsorption or catalytic reaction in the fixed bed, it can efficiently remove sulfur and nitrogen compounds, ensure that flue gas emissions meet standards, reduce atmospheric pollution problems such as acid rain and photochemical smog, and promote industrial clean production and ecological environmental protection.

[0003] The existing flue gas fixed-bed integrated desulfurization and denitrification device reacts with the flue gas that has just entered the tank through the desulfurizer and washes away some of the dust and particulate matter in the flue gas. However, this method cannot improve the desulfurization and denitrification effects during use. The existing desulfurizer is also affected by and diluted by dust. However, this method processes the gas that has just entered. Because there is a large amount of impurities and dust in the gas that has just entered, the dust will dilute the desulfurizer in large quantities, which will lead to inconsistent desulfurization effects. If desulfurizers of different concentrations are used, the cost will increase and the expected desulfurization effect cannot be achieved. Summary of the Invention

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide an integrated flue gas fixed bed desulfurization and denitrification device, wherein installation through hole one, installation through hole two, installation through hole three and installation through hole four are respectively provided in the interior of the flue gas buffer chamber, desulfurization chamber, denitrification chamber and secondary desulfurization and denitrification chamber, and the inner surfaces of installation through hole one, installation through hole two, installation through hole three and installation through hole four are tightly fitted with a dust screen, a calcium-based granular desulfurization layer, a denitrification layer, a secondary desulfurization layer and a secondary denitrification layer, respectively, which is conducive to subdividing flue gas with different components and concentrations, and filtering step by step through the dust screen, calcium-based granular desulfurization layer, denitrification layer, secondary desulfurization layer and secondary denitrification layer. Since the dust screen filters the dust in the flue gas in advance and collects it into dust collecting shell one and dust collecting shell two, it can effectively prevent the influence of dust in the flue gas on desulfurization and denitrification, and at the same time, it is first classified and filtered step by step and then concentrated.

[0005] The present invention also provides an integrated flue gas fixed bed desulfurization and denitrification device as mentioned above, comprising: a flue gas duct, the interior of the flue gas duct is penetrated by a tank body, the interior of the tank body is respectively provided with a flue gas buffer chamber, a desulfurization chamber, a denitrification chamber and a secondary desulfurization and denitrification chamber, a circular sealing ring is fixedly connected to the outer surface of the lower end of the flue gas duct, and the lower surface of the circular sealing ring is fixedly connected to a motor; the interiors of the flue gas buffer chamber, desulfurization chamber, denitrification chamber and secondary desulfurization and denitrification chamber are respectively provided with an installation through hole one, an installation through hole two, an installation through hole three and an installation through hole four, the inner surfaces of the installation through hole one, the installation through hole two, the installation through hole three and the installation through hole four are respectively tightly fitted with a dust screen, a calcium-based granular desulfurization layer, a denitrification layer, a secondary desulfurization layer and a secondary denitrification layer.

[0006] According to the integrated flue gas fixed-bed desulfurization and denitrification device provided by the present invention, a reinforcement plate is fixedly connected to the side surface of the flue gas duct, and a tank body is fixedly connected to the inner surface of the reinforcement plate.

[0007] According to a flue gas fixed bed desulfurization and denitrification integrated device provided by the present invention, the lower surface of the tank body is fixedly connected to a dust collecting shell 1 and a dust collecting shell 2, and the interior of the tank body is provided with a dust guide hole, and the dust guide hole connects the dust collecting shell 1 and the dust collecting shell 2.

[0008] According to the integrated flue gas fixed-bed desulfurization and denitrification device provided by the present invention, dust collecting chambers are provided inside the first dust collecting shell and the second dust collecting shell.

[0009] According to the integrated flue gas fixed-bed desulfurization and denitrification device provided by the present invention, cover plate mounting through holes are provided inside the first dust collecting shell and the second dust collecting shell.

[0010] According to the integrated flue gas fixed bed desulfurization and denitrification device provided by the present invention, the outer surface of the cover plate mounting hole is tightly fitted with a detachable lower cover plate, and the interiors of the dust collecting shells 1 and 2 are penetrated by support columns.

[0011] According to the integrated flue gas fixed-bed desulfurization and denitrification device provided by the present invention, the upper surface of the support column is fixedly connected to the tank body, and the lower surface of the support column is fixedly connected to the support pad.

[0012] According to the integrated flue gas fixed-bed desulfurization and denitrification device provided by the present invention, a square sealing ring is fixedly connected to the side surface of the tank body, and a conical shell 1 and a conical shell 2 are fixedly connected to the outer surface of the square sealing ring.

[0013] According to the integrated flue gas fixed-bed desulfurization and denitrification device provided by the present invention, the interiors of the first conical shell and the second conical shell are both provided with a purified gas temporary storage chamber and an air outlet.

[0014] According to the integrated flue gas fixed-bed desulfurization and denitrification device provided by the present invention, the output end of the motor is fixedly connected to an anti-corrosion fan blade, and the outer surface of the motor is fixedly connected to a heat dissipation back cover.

[0015] Compared with the existing technology, the flue gas fixed bed desulfurization and denitrification integrated device is respectively provided with installation through hole one, installation through hole two, installation through hole three and installation through hole four in the interior of the flue gas buffer chamber, desulfurization chamber, denitrification chamber and secondary desulfurization and denitrification chamber. The inner surfaces of the installation through hole one, installation through hole two, installation through hole three and installation through hole four are respectively tightly fitted with a dust screen, a calcium-based granular desulfurization layer, a denitrification layer, a secondary desulfurization layer and a secondary denitrification layer, which is conducive to subdividing flue gases of different compositions and concentrations, thereby obtaining the best desulfurization and denitrification effect.

[0016] Compared with the existing technology, the flue gas fixed-bed desulfurization and denitrification integrated device performs step-by-step filtration through the dust screen, calcium-based granular desulfurization layer, denitrification layer, secondary desulfurization layer and secondary denitrification layer. Since the dust screen filters the dust in the flue gas in advance and collects it into the dust collecting shell 1 and the dust collecting shell 2, it effectively prevents the influence of dust in the flue gas on desulfurization and denitrification. At the same time, it is first classified and filtered step by step and then concentrated, thereby effectively improving the desulfurization and denitrification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a transverse cross-sectional structural diagram of the flue gas fixed-bed integrated desulfurization and denitrification device of the present invention;

[0019] Figure 2 This is the overall structural diagram of the flue gas fixed-bed desulfurization and denitrification integrated device of the present invention;

[0020] Figure 3 This is a left-side structural diagram of the integrated flue gas fixed-bed desulfurization and denitrification device of the present invention;

[0021] Figure 4 This is a front structural diagram of the integrated flue gas fixed-bed desulfurization and denitrification device of the present invention;

[0022] Figure 5 This is a top view of the structure of the flue gas fixed-bed integrated desulfurization and denitrification device of the present invention.

[0023] Legend:

[0024] 1. Flue gas duct; 2. Circular sealing ring; 3. Motor; 4. Reinforcement plate; 5. Dust collecting shell 1; 6. Dust collecting chamber; 7. Removable lower cover; 8. Dust collecting shell 2; 9. Heat dissipation rear cover; 10. Support column; 11. Support pad; 12. Tank body; 13. Conical shell 1; 14. Conical shell 2; 15. Square sealing ring; 16. Anti-corrosion fan blade; 17. Flue gas buffer chamber; 18. Desulfurization chamber; 19. Denitrification chamber; 20. Secondary desulfurization and denitrification chamber; 21. Dust screen; 22. Calcium-based granular desulfurization layer; 23. Denitrification layer; 24. Secondary desulfurization layer; 25. Secondary denitrification layer; 26. Purified gas temporary storage chamber; 27. Dust guide hole; 28. Air outlet; 29. ​​Installation through hole 1; 30. Installation through hole 2; 31. Installation through hole 3; 32. Installation through hole 4; 33. Cover plate installation through hole. DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0026] Reference Figure 1-5 An embodiment of the present invention provides an integrated flue gas fixed bed desulfurization and denitrification device, which includes: a flue gas duct 1, a tank body 12 passing through the interior of the flue gas duct 1, a flue gas buffer chamber 17, a desulfurization chamber 18, a denitrification chamber 19 and a secondary desulfurization and denitrification chamber 20 are respectively provided inside the tank body 12, a circular sealing ring 2 is fixedly connected to the outer surface of the lower end of the flue gas duct 1, and a motor 3 is fixedly connected to the lower surface of the circular sealing ring 2; the interiors of the flue gas buffer chamber 17, the desulfurization chamber 18, the denitrification chamber 19 and the secondary desulfurization and denitrification chamber 20 are respectively provided with an installation through hole 1 29, an installation through hole 2 30, an installation through hole 31 and an installation through hole 4 32, and the inner surfaces of the installation through hole 1 29, the installation through hole 2 30, the installation through hole 31 and the installation through hole 4 32 are respectively tightly fitted with a dust screen 21, a calcium-based granular desulfurization layer 22, a denitrification layer 23, a secondary desulfurization layer 24 and a secondary denitrification layer 25.

[0027] A reinforcement plate 4 is fixedly connected to the side surface of the smoke duct 1 , and a tank body 12 is fixedly connected to the inner surface of the reinforcement plate 4 .

[0028] The lower surface of the tank body 12 is fixedly connected with the dust collecting shell 1 5 and the dust collecting shell 2 8. The interior of the tank body 12 is provided with a dust guide hole 27, which connects the dust collecting shell 1 5 and the dust collecting shell 2 8.

[0029] A dust collecting chamber 6 is provided inside the dust collecting housing 1 5 and the dust collecting housing 2 8 .

[0030] The insides of the dust collecting housing 1 5 and the dust collecting housing 2 8 are both provided with cover plate mounting through holes 33 .

[0031] The outer surface of the cover plate mounting hole 33 is tightly fitted with a detachable lower cover plate 7 , and the interiors of the dust collecting housing 1 5 and the dust collecting housing 2 8 are both penetrated by support columns 10 .

[0032] The upper surface of the support column 10 is fixedly connected to the tank body 12 , and the lower surface of the support column 10 is fixedly connected to the support pad 11 .

[0033] A square sealing ring 15 is fixedly connected to the side surface of the tank body 12 , and a conical shell 1 13 and a conical shell 2 14 are fixedly connected to the outer surface of the square sealing ring 15 .

[0034] A purified gas temporary storage chamber 26 and an air outlet 28 are provided inside the first conical shell 13 and the second conical shell 14 .

[0035] The output end of the motor 3 is fixedly connected to an anti-corrosion fan blade 16 , and the outer surface of the motor 3 is fixedly connected to a heat dissipation back cover 9 .

[0036] Working principle: During the use of the device, the cavity formed between the flue gas duct 1 and the tank body 12 is conducive to the pressure difference formed when the anti-corrosion fan blades 16 are driven by the motor 3 to rotate at high speed, which is conducive to the rapid filling of the flue gas buffer chamber 17 with flue gas. Then the flue gas is filtered step by step through the dust screening net 21, the calcium-based granular desulfurization layer 22, the denitrification layer 23, the secondary desulfurization layer 24 and the secondary denitrification layer 25. Since the dust screening net 21 filters the dust in the flue gas in advance and collects it into the dust collecting shell 1 5 and the dust collecting shell 2 8, it can effectively prevent the influence of dust in the flue gas on desulfurization and denitrification. At the same time, it is first classified and filtered step by step and then concentrated, thereby effectively improving the desulfurization and denitrification effects.

[0037] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the scope of the present invention.

Claims

1. A flue gas fixed bed desulfurization and denitrification integrated device, characterized in that: include: A flue gas duct (1), wherein a tank body (12) is passed through the interior of the flue gas duct (1), a flue gas buffer chamber (17), a desulfurization chamber (18), a denitrification chamber (19), and a secondary desulfurization and denitrification chamber (20) are respectively provided inside the tank body (12), a circular sealing ring (2) is fixedly connected to the outer surface of the lower end of the flue gas duct (1), and a motor (3) is fixedly connected to the lower surface of the circular sealing ring (2); The interiors of the flue gas buffer chamber (17), the desulfurization chamber (18), the denitrification chamber (19) and the secondary desulfurization and denitrification chamber (20) are respectively provided with a first installation through hole (29), a second installation through hole (30), a third installation through hole (31) and a fourth installation through hole (32); the inner surfaces of the first installation through hole (29), the second installation through hole (30), the third installation through hole (31) and the fourth installation through hole (32) are respectively tightly fitted with a dust screen (21), a calcium-based granular desulfurization layer (22), a denitrification layer (23), a secondary desulfurization layer (24) and a secondary denitrification layer (25).

2. The integrated flue gas fixed-bed desulfurization and denitrification device according to claim 1, characterized in that: A reinforcing plate (4) is fixedly connected to the side surface of the flue gas duct (1), and a tank body (12) is fixedly connected to the inner surface of the reinforcing plate (4).

3. The integrated flue gas fixed-bed desulfurization and denitrification device according to claim 1, characterized in that: The lower surface of the tank body (12) is fixedly connected with a dust collecting shell 1 (5) and a dust collecting shell 2 (8), and a dust guide hole (27) is provided inside the tank body (12), and the dust guide hole (27) connects the dust collecting shell 1 (5) and the dust collecting shell 2 (8).

4. The integrated flue gas fixed-bed desulfurization and denitrification device according to claim 3, characterized in that: The dust collecting housing 1 (5) and the dust collecting housing 2 (8) are both provided with a dust collecting chamber (6) therein.

5. The integrated flue gas fixed-bed desulfurization and denitrification device according to claim 3, characterized in that: The insides of the dust collecting housing 1 (5) and the dust collecting housing 2 (8) are both provided with cover plate mounting through holes (33).

6. The integrated flue gas fixed-bed desulfurization and denitrification device according to claim 5, characterized in that: The outer surface of the cover plate mounting through hole (33) is tightly fitted with a detachable lower cover plate (7), and the interiors of the dust collecting shell 1 (5) and the dust collecting shell 2 (8) are both penetrated by support columns (10).

7. The integrated flue gas fixed-bed desulfurization and denitrification device according to claim 6, characterized in that: The upper surface of the support column (10) is fixedly connected to a tank body (12), and the lower surface of the support column (10) is fixedly connected to a support pad (11).

8. The integrated flue gas fixed-bed desulfurization and denitrification device according to claim 1, characterized in that: A square sealing ring (15) is fixedly connected to the side surface of the tank body (12), and a conical shell 1 (13) and a conical shell 2 (14) are fixedly connected to the outer surface of the square sealing ring (15).

9. The integrated flue gas fixed-bed desulfurization and denitrification device according to claim 8, characterized in that: The conical shell 1 (13) and the conical shell 2 (14) are both provided with a purified gas temporary storage chamber (26) and an air outlet (28) inside.

10. The integrated flue gas fixed-bed desulfurization and denitrification device according to claim 1, characterized in that: The output end of the motor (3) is fixedly connected to an anti-corrosion fan blade (16), and the outer surface of the motor (3) is fixedly connected to a heat dissipation back cover (9).

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