Flue gas dry desulfurization desulfurizer spray pipe connecting device

Abstract

The utility model discloses a flue gas dry desulfurization desulfurizer spray pipe connecting device, which relates to the technical field of desulfurizer spray pipe connection and comprises a desulfurizer conveying pipeline A, a standard flange A, a desulfurizer conveying pipeline B, a desulfurizer spray pipe, a non-standard flange, a standard flange B, an outer sleeve and a desulfurization reactor. The desulfurizer conveying pipeline A, the desulfurizer conveying pipeline B and the desulfurizer spray pipe are connected through flanges, the desulfurizer spray pipe is sleeved with the non-standard flange, the desulfurizer spray pipe is welded to the non-standard flange and extends into the desulfurization reactor, and a gap capable of being drawn out of the spray pipe is reserved between the desulfurizer spray pipe and the outer wall of the desulfurization reactor. An outer sleeve is arranged between the non-standard flange on the outer wall of the desulfurizing agent spray pipe and the outer wall of the desulfurizing reactor and is in welded connection with the outer wall of the desulfurizing reactor, and a flange is arranged at the other end of the outer sleeve and is connected with the non-standard flange of the desulfurizing agent spray pipe, so that the connecting device is convenient to disassemble and beneficial to overhaul or replacement of the desulfurizing agent spray pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurizing agent nozzle connection, in particular to a flue gas dry desulfurization desulfurizing agent nozzle connection device. Background Art

[0002] In the national environmental protection 2 In the implementation of treatment, dry desulfurization process has become the main route for flue gas desulfurization. In dry desulfurization, the installation of the desulfurizer nozzle at the end of the desulfurizer delivery pipeline of sodium baking soda-based SDS flue gas desulfurization and high-activity calcium-based SDS flue gas desulfurization is mostly carried out by welding, which is inconvenient during installation and maintenance. Utility Model Content

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a flue gas dry desulfurization desulfurization agent nozzle connecting device.

[0004] The technical solution adopted by the utility model is:

[0005] A flue gas dry desulfurization desulfurization agent nozzle connection device comprises a desulfurization agent delivery pipeline A, a standard flange A, a desulfurization agent delivery pipeline B, a desulfurization agent nozzle, a non-standard flange, a standard flange B, an outer sleeve, and a desulfurization reactor; the desulfurization agent is sprayed into the desulfurization reactor through the desulfurization agent delivery pipeline A, the desulfurization agent delivery pipeline B, and the desulfurization agent nozzle; the desulfurization agent delivery pipeline A, the desulfurization agent delivery pipeline B, and the desulfurization agent nozzle are all flange-connected; the desulfurization agent nozzle is sleeved in the non-standard flange; the desulfurization agent nozzle is welded to the non-standard flange; the desulfurization agent nozzle extends into the desulfurization reactor; A gap is left between the desulfurizer nozzle and the outer wall of the desulfurization reactor for withdrawing the desulfurizer nozzle. An outer sleeve is arranged between the non-standard flange on the outer wall of the desulfurizer nozzle and the outer wall of the desulfurization reactor. The outer sleeve is welded to the outer wall of the desulfurization reactor. A flange is arranged at the other end of the outer sleeve to connect with the non-standard flange of the desulfurizer nozzle. When the desulfurizer nozzle needs to be repaired or replaced, the desulfurizer delivery pipeline B is removed, the desulfurizer nozzle is disassembled from the desulfurizer delivery pipeline B, and the non-standard flange is disassembled from the standard flange B. Then the desulfurizer nozzle can be withdrawn from the inside of the desulfurization reactor for repair or replacement.

[0006] As a further technical solution of the utility model: the desulfurizer delivery pipeline A, the desulfurizer delivery pipeline B, and the desulfurizer nozzle are connected by flange connections, and gaskets and fasteners matching the flange grades are provided between the standard flanges A and between the non-standard flanges and the standard flanges B.

[0007] As a further technical solution of the utility model: the material of the desulfurizer nozzle is selected from stainless steel or carbon steel according to the viscosity of the desulfurizer. Stainless steel is selected for desulfurizers that are easy to absorb moisture and harden, and carbon steel is selected for desulfurizers that are not easy to harden.

[0008] As a further technical solution of the utility model: the outer sleeve specification nominal diameter is selected to be one level larger than the desulfurizer nozzle specification, and the inner diameter of the outer sleeve needs to be larger than the outer diameter of the desulfurizer nozzle to meet the desulfurizer nozzle insertion requirements.

[0009] As a further technical solution of the utility model: the length of the desulfurizer delivery pipeline B is greater than the length of the desulfurizer nozzle, and a gap is left between the desulfurizer nozzle and the outer wall of the desulfurization reactor for withdrawing the nozzle, so as to facilitate the withdrawal of the desulfurizer nozzle.

[0010] As a further technical solution of the utility model: the standard flange A grade matches the specifications and design pressure of the desulfurizer delivery pipeline A, the desulfurizer delivery pipeline B, and the desulfurizer nozzle, and the standard flange B grade matches the specifications and design pressure of the outer casing.

[0011] As a further technical solution of the utility model: the inner diameter of the non-standard flange is selected to be 3-5mm larger than the outer diameter of the desulfurizer nozzle to meet the requirements of nozzle insertion and welding, and the other dimensions and selection grades are consistent with the standard flange B.

[0012] As a further technical solution of the utility model: the length of the outer sleeve only needs to meet the requirements of flange fastener installation and sleeve installation, and is preferably 200-300mm.

[0013] As a further technical solution of the utility model: the outer sleeve is made of a thin-walled carbon steel pipe that meets the design pressure of the desulfurization reactor.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The desulfurizer nozzle is connected to the outer casing flange. When the desulfurizer nozzle is blocked, it is easy to disassemble and repair or replace the nozzle.

[0016] 2. There are no welding points between the desulfurizer nozzle and the desulfurization reactor. The installation and subsequent maintenance of the nozzle do not require electric welding and cutting equipment, making the construction simpler and safer.

[0017] 3. There is a gap between the desulfurizer nozzle and the desulfurization reactor, and the installation and maintenance process of the nozzle will not have an adverse effect on the desulfurization reactor.

[0018] 4. The desulfurizer spray pipe is connected to the outer casing flange. The connection point can play a supporting role, making the installation of the desulfurizer delivery pipeline more stable.

[0019] 5. Non-standard flanges are designed and manufactured as non-standard products. They only need to meet the connection requirements and grades of standard flanges. They are simple to manufacture and easy to install.

[0020] 6. The outer casing is made of thin-walled carbon steel pipe, which is low in cost and easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model has attached Figure 1 Page, 1 piece in total.

[0022] Figure 1 The present invention is a simplified diagram of a flue gas dry desulfurization desulfurization agent nozzle connection device.

[0023] In the figure: 1-desulfurizer delivery pipeline A, 2-standard flange A, 3-desulfurizer delivery pipeline B, 4-desulfurizer nozzle, 5-non-standard flange, 6-standard flange B, 7-outer casing, 8-desulfurization reactor. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] like Figure 1 As shown, a flue gas dry desulfurization desulfurization agent nozzle connection device includes a desulfurization agent delivery pipeline A1, a standard flange A2, a desulfurization agent delivery pipeline B3, a desulfurization agent nozzle 4, a non-standard flange 5, a standard flange B6, an outer sleeve 7, and a desulfurization reactor 8. The desulfurization agent delivery pipeline A1 is flange-connected with the desulfurization agent delivery pipeline B3 through the standard flange A2, and the other end of the desulfurization agent delivery pipeline B3 is flange-connected with one end of the desulfurization agent nozzle 4 through the standard flange A2. One end of the desulfurization agent nozzle 4 is inserted into the outer sleeve 7, and then the desulfurization agent nozzle 4 passes through the reserved hole of the desulfurization reactor 8. Extending into the desulfurization reactor 8, a gap is left between the desulfurization agent nozzle 4 and the outer wall of the desulfurization reactor 8 for withdrawing the desulfurization agent nozzle 4, the desulfurization agent nozzle 4 is flange-connected to one end of the outer sleeve 7 through a non-standard flange 5 and a standard flange B6, and the other end of the outer sleeve 7 is welded and fixed to the desulfurization reactor 8. When the desulfurization agent nozzle 4 needs to be repaired or replaced, the desulfurization agent delivery pipeline B3 is removed, the desulfurization agent nozzle 4 is disassembled from the desulfurization agent delivery pipeline B3, and the non-standard flange 5 is disassembled from the standard flange B6, and then the desulfurization agent nozzle 4 can be withdrawn from the inside of the desulfurization reactor 8 for repair or replacement.

Claims

1. A flue gas dry desulfurization desulfurization agent nozzle connection device, characterized in that: The invention comprises a desulfurizing agent delivery pipeline A (1), a standard flange A (2), a desulfurizing agent delivery pipeline B (3), a desulfurizing agent spray pipe (4), a non-standard flange (5), a standard flange B (6), an outer sleeve (7), and a desulfurizing reactor (8); the desulfurizing agent is sprayed into the desulfurizing reactor (8) through the desulfurizing agent delivery pipeline A (1), the desulfurizing agent delivery pipeline B (3), and the desulfurizing agent spray pipe (4); the desulfurizing agent delivery pipeline A (1), the desulfurizing agent delivery pipeline B (3), and the desulfurizing agent spray pipe (4) are all flange-connected; the desulfurizing agent spray pipe (4) is sleeved in the non-standard flange (5); the desulfurizing agent spray pipe (4) and the non-standard flange (5) are welded; the desulfurizing agent spray pipe (4) extends into the desulfurizing reactor (8); and the desulfurizing agent spray pipe (4) is inserted into the non-standard flange (5). A gap is left between the pipe (4) and the outer wall of the desulfurization reactor (8) for withdrawing the nozzle. An outer sleeve (7) is provided between the non-standard flange (5) on the outer wall of the desulfurization agent nozzle (4) and the outer wall of the desulfurization reactor (8). The outer sleeve (7) and the outer wall of the desulfurization reactor (8) are connected by welding. A flange is provided at the other end of the outer sleeve (7) to be connected to the non-standard flange (5) of the desulfurization agent nozzle (4). When the desulfurization agent nozzle (4) needs to be repaired or replaced, the desulfurization agent delivery pipeline B (3) is removed, the desulfurization agent nozzle (4) is disassembled from the desulfurization agent delivery pipeline B (3), and the non-standard flange (5) is disassembled from the standard flange B (6). Then, the desulfurization agent nozzle (4) can be withdrawn from the inside of the desulfurization reactor (8) for repair or replacement.

2. A flue gas dry desulfurization desulfurization agent nozzle connection device according to claim 1, characterized in that: The desulfurizing agent delivery pipeline A (1), the desulfurizing agent delivery pipeline B (3) and the desulfurizing agent nozzle (4) are connected by flanges, and the standard flanges A (2) and the non-standard flanges (5) and the standard flanges B (6) are provided with gaskets and fasteners matching the flange grades.

3. A flue gas dry desulfurization desulfurization agent nozzle connection device according to claim 1, characterized in that: The material of the desulfurizer spray pipe (4) is selected from stainless steel or carbon steel according to the viscosity of the desulfurizer. For desulfurizers that are easy to absorb moisture and harden, stainless steel is selected, while for desulfurizers that are not easy to harden, carbon steel is selected.

4. A flue gas dry desulfurization desulfurization agent nozzle connection device according to claim 1, characterized in that: The outer sleeve (7) is selected to have a nominal diameter one level larger than the desulfurizer nozzle (4). The inner diameter of the outer sleeve (7) needs to be larger than the outer diameter of the desulfurizer nozzle (4) to meet the insertion requirements of the desulfurizer nozzle (4).

5. A flue gas dry desulfurization desulfurization agent nozzle connection device according to claim 1, characterized in that: The length of the desulfurizing agent delivery pipeline B (3) is greater than the length of the desulfurizing agent nozzle (4), and a gap is left between the desulfurizing agent nozzle (4) and the outer wall of the desulfurizing reactor (8) for withdrawing the nozzle, so as to facilitate the withdrawal of the desulfurizing agent nozzle (4).

6. A flue gas dry desulfurization desulfurization agent nozzle connection device according to claim 1, characterized in that: The grade of the standard flange A (2) matches the specifications and design pressure of the desulfurizer delivery pipeline A (1), the desulfurizer delivery pipeline B (3), and the desulfurizer nozzle (4), and the grade of the standard flange B (6) matches the specifications and design pressure of the outer casing (7).

7. A flue gas dry desulfurization desulfurization agent nozzle connection device according to claim 1, characterized in that: The inner diameter of the non-standard flange (5) is selected to be 3-5 mm larger than the outer diameter of the desulfurizer nozzle (4) to meet the nozzle insertion and welding requirements, and the remaining dimensions and selection grades are consistent with the standard flange B (6).

8. The flue gas dry desulfurization desulfurization agent nozzle connection device according to claim 1, characterized in that: The length of the outer sleeve (7) can meet the requirements of flange fastener installation and sleeve installation, preferably 200-300mm.

9. A flue gas dry desulfurization desulfurization agent nozzle connection device according to claim 1, characterized in that: The outer casing (7) is made of a thin-walled carbon steel pipe that can meet the design pressure of the desulfurization reactor (8).

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