Composite ceramic fiber filter tube desulfurization, dust removal and denitration integrated device with double-layer structure

Abstract

The utility model discloses a composite ceramic fiber filter tube desulfurization, dust removal and denitration integrated device with a double-layer structure, which relates to the technical field of flue gas treatment and comprises a bin body and a support frame, a partition plate and a filter tube assembly are arranged in the bin body, and the bin body can be divided into a lower smoke inlet bin chamber and an upper smoke outlet bin chamber by the partition plate; the filter tube assembly comprises a composite ceramic fiber filter tube and a ceramic filter tube, the composite ceramic fiber filter tube is sleeved with the ceramic filter tube to form a double-layer sleeve structure, a desulfurizing agent layer is arranged on the outer wall of the composite ceramic fiber filter tube, and an SCR denitration catalyst layer is arranged on the inner wall of the composite ceramic fiber filter tube; the filter pipe assembly is arranged on the partition plate in a penetrating mode, the closed end of the filter pipe assembly is located in the lower smoke inlet bin, and the pipe opening end of the filter pipe assembly is located in the upper smoke exhaust bin; the supporting frame is of a double-layer frame structure arranged in the vertical direction, and a bin body installation position is formed in each layer of frame structure. The multiple bin bodies are arranged, and the bin bodies and the bin body mounting positions are arranged in a one-to-one correspondence mode.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, in particular to a double-layer composite ceramic fiber filter tube desulfurization, dust removal and denitrification integrated device. Background Art

[0002] Existing integrated dust removal and denitrification devices using composite ceramic fiber filter tubes, such as Chinese patent document CN219539768U, disclose a novel flue gas composite ceramic fiber filter tube, comprising a filter tube body, the filter tube body comprising a fiber layer, carbon fibers mixed in the fiber layer, an SCR denitrification catalyst loaded in the fiber layer, and a filter cake attached to the outer layer of the fiber layer; the patent also discloses an integrated flue gas dust removal and denitrification device equipped with the novel flue gas composite ceramic fiber filter tube.

[0003] Although the integrated flue gas dust removal and denitrification device in the above technical solution can remove dust and denitrify the flue gas through its built-in new flue gas composite ceramic fiber filter tube, in order to prevent the SCR denitrification catalyst loaded on the filter tube body from being poisoned by ammonium sulfate, the flue gas needs to be desulfurized before dust removal and denitrification, that is, a separate desulfurization device needs to be set up before the integrated flue gas dust removal and denitrification device. The three functions of desulfurization, dust removal and denitrification cannot be achieved by using only the integrated flue gas dust removal and denitrification device. Moreover, the various bins of the conventionally designed integrated composite ceramic fiber filter tube dust removal and denitrification device are connected side by side to form a single-layer structure. The single-layer structure occupies a large area, and there is a problem that the equipment cannot be placed due to the small space on site. Utility Model Content

[0004] The purpose of the utility model is to provide a double-layer composite ceramic fiber filter tube desulfurization, dust removal and denitrification integrated device to solve the problems existing in the above-mentioned related technologies. It can desulfurize, remove dust and denitrify flue gas, and has a compact structure, saving floor space.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] The utility model provides a double-layer composite ceramic fiber filter tube desulfurization, dust removal and denitrification integrated device, including a warehouse body and a support frame, a partition and a filter tube assembly are arranged in the warehouse body, the partition can separate the warehouse body into a lower smoke inlet chamber and an upper smoke exhaust chamber, and the lower smoke inlet chamber is provided with a smoke inlet, and the upper smoke exhaust chamber is provided with a smoke outlet; the filter tube assembly includes a composite ceramic fiber filter tube and a ceramic filter tube, the composite ceramic fiber filter tube is sleeved in the ceramic filter tube to form a double-layer sleeve structure, and the The outer wall of the composite ceramic fiber filter tube is provided with a desulfurizer layer, and the inner wall of the composite ceramic fiber filter tube is provided with an SCR denitrification catalyst layer; the filter tube assembly is passed through the partition, and the closed end of the filter tube assembly is located in the lower smoke inlet chamber, and the pipe mouth end of the filter tube assembly is located in the upper smoke exhaust chamber; the support frame is a double-layer frame structure arranged in the vertical direction, and a silo installation position is formed in each layer of the frame structure; there are multiple silos, and the silos are arranged in a one-to-one correspondence with the silo installation positions.

[0007] Preferably, the filter tube assemblies are provided in multiple groups, and all the filter tube assemblies are distributed on the partitions of the corresponding bin bodies.

[0008] Preferably, the flue gas inlet of the lower smoke inlet chamber is connected to an air inlet flue, and the air inlet flue is provided with an ammonia injection port, which is used to inject ammonia so that the flue gas to be purified in the bin body can undergo a denitrification reaction.

[0009] Preferably, baffle doors are provided at the smoke inlet of the lower smoke inlet chamber and the smoke outlet of the upper smoke exhaust chamber.

[0010] Preferably, an ash discharge port is provided at the bottom of the lower smoke inlet chamber, and the ash discharge port is connected to an ash discharge valve.

[0011] Preferably, the upper portion of the warehouse body is a cubic structure, and the lower portion of the warehouse body is an inverted quadrangular pyramid structure.

[0012] Preferably, the smoke inlet of the lower smoke inlet chamber is arranged on the inverted quadrangular pyramid structure of the warehouse body, and is located near the position where the inverted quadrangular pyramid structure of the warehouse body is connected to the cube structure; the smoke outlet of the upper smoke exhaust chamber is arranged on the cube structure of the warehouse body, and is located near the top of the cube structure of the warehouse body.

[0013] Preferably, all of the bins are connected in parallel.

[0014] Compared with the related art, the utility model has achieved the following technical effects:

[0015] The utility model provides a double-layer structure composite ceramic fiber filter tube desulfurization, dust removal and denitrification integrated device, including a warehouse body and a support frame, a partition and a filter tube assembly are arranged in the warehouse body, and the filter tube assembly includes a composite ceramic fiber filter tube and a ceramic filter tube. During operation, the flue gas to be purified mixed with ammonia enters the lower smoke inlet chamber in the warehouse body through the flue gas inlet, first passes through the outer tube of the filter tube assembly, that is, the ceramic filter tube for preliminary filtration, and then passes through the inner tube of the filter tube assembly, that is, the composite ceramic fiber filter tube for secondary filtration to achieve dust removal, and performs desulfurization reaction with the desulfurizer layer on the outer wall of the composite ceramic fiber filter tube to achieve desulfurization, and then enters the composite ceramic fiber filter tube, and in the composite ceramic fiber filter tube The denitrification reaction is carried out under the catalytic action of the SCR denitrification catalyst layer on the inner wall to achieve denitrification. The purified flue gas enters the upper exhaust chamber and passes out through the flue gas outlet, thereby integrating the three functions of desulfurization, dust removal and denitrification into one bin body for comprehensive purification of the flue gas, thereby improving the flue gas treatment efficiency. In addition, the device includes multiple bin bodies, and each bin body is supported by a supporting frame. In particular, the supporting frame is a double-layer frame structure arranged in the vertical direction, and a bin body installation position is formed in each layer of the frame structure. The bin body is installed in the corresponding bin body installation position, thereby utilizing the longitudinal space on site to arrange each bin body, with a compact structure and saving floor space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of a double-layer composite ceramic fiber filter tube desulfurization, dust removal and denitrification integrated device provided in an embodiment of the present utility model.

[0018] In the figure: 1- warehouse body, 2- supporting frame, 3- smoke inlet, 4- smoke outlet. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The purpose of the utility model is to provide a double-layer composite ceramic fiber filter tube desulfurization, dust removal and denitrification integrated device to solve the problems existing in the relevant technology. It can desulfurize, remove dust and denitrify the flue gas, and has a compact structure, saving floor space.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] like Figure 1 As shown, this embodiment provides a double-layer composite ceramic fiber filter tube desulfurization, dust removal and denitrification integrated device, including a silo 1 and a support frame 2. A partition and a filter tube assembly are provided in the silo 1, and the partition can separate the silo 1 into a lower smoke inlet chamber and an upper smoke exhaust chamber, and the lower smoke inlet chamber is provided with a flue gas inlet 3, and the upper smoke exhaust chamber is provided with a flue gas outlet 4; the filter tube assembly includes a composite ceramic fiber filter tube and a ceramic filter tube, the composite ceramic fiber filter tube is sleeved in the ceramic filter tube to form a double-layer sleeve structure, and the outer wall of the composite ceramic fiber filter tube is provided with a desulfurizer layer, and the inner wall of the composite ceramic fiber filter tube is provided with an SCR denitrification catalyst layer; the filter tube assembly is passed through the partition, and the closed end of the filter tube assembly is located in the lower smoke inlet chamber, and the pipe mouth end of the filter tube assembly is located in the upper smoke exhaust chamber; the support frame 2 is a double-layer frame structure arranged in the vertical direction, and a silo installation position is formed in each layer of the frame structure; there are multiple silos 1, and the silo 1 is arranged in a one-to-one correspondence with the silo installation position.

[0023] It should be noted that Figure 1 What is shown in the figure is that the support frame 2 is a double-layer frame structure, and there are four warehouse bodies 1. Among the four warehouse bodies 1, two are arranged on the lower layer of the support frame 2, and the other two are arranged on the upper layer of the support frame 2. The upper and lower two-layer structural design greatly saves space.

[0024] It should be noted that the composite ceramic fiber filter tube and the ceramic filter tube are both mature products on the market, and their structure and working principle are not described in detail here; the desulfurizer layer on the outer wall of the composite ceramic fiber filter tube is preferably a slaked lime layer; for the SCR denitrification catalyst layer on the inner wall of the composite ceramic fiber filter tube, its main active ingredients are TiO2, V2O5 and WO3.

[0025] In this embodiment, multiple groups of filter tube assemblies are provided, and all filter tube assemblies are distributed on the partitions of the corresponding bin body 1.

[0026] In this embodiment, the flue gas inlet 3 of the lower smoke inlet chamber is connected to the air inlet flue, and the air inlet flue is provided with an ammonia injection port for injecting ammonia so that the flue gas to be purified in the silo 1 can undergo a denitrification reaction. During operation, the flue gas to be purified mixed with ammonia in the air inlet flue enters the lower smoke inlet chamber in the silo 1 through the flue gas inlet 3, first passes through the outer tube of the filter tube assembly, that is, the ceramic filter tube, for preliminary filtration, and then passes through the inner tube of the filter tube assembly, that is, the composite ceramic fiber filter tube, for secondary filtration to achieve dust removal, and undergoes a desulfurization reaction with the desulfurizer layer on the outer wall of the composite ceramic fiber filter tube to achieve desulfurization. Then, it enters the composite ceramic fiber filter tube and undergoes a denitrification reaction under the catalytic action of the SCR denitrification catalyst layer on the inner wall of the composite ceramic fiber filter tube to achieve denitrification. The purified flue gas enters the upper smoke exhaust chamber and is discharged through the flue gas outlet 4, thereby integrating the three functions of desulfurization, dust removal and denitrification into one silo 1, completing the comprehensive purification treatment of the flue gas and improving the flue gas treatment efficiency.

[0027] In this embodiment, baffle doors are provided at the smoke inlets 3 of the lower smoke inlet chamber and the smoke outlets 4 of the upper smoke exhaust chamber; specifically, all the bin bodies 1 in this embodiment are connected in parallel, and each bin body 1 is provided with inlet and outlet baffle doors. When a bin body 1 fails, the faulty bin body 1 can be closed through the corresponding baffle door to maintain the normal operation of other bin bodies 1, thereby realizing the online maintenance function of the faulty bin body 1.

[0028] In this embodiment, an ash discharge port is provided at the bottom of the lower smoke inlet chamber, and the ash discharge port is connected to an ash discharge valve.

[0029] In this embodiment, the upper portion of the warehouse body 1 is a cubic structure, and the lower portion of the warehouse body 1 is an inverted quadrangular pyramid structure.

[0030] Furthermore, the smoke inlet 3 of the lower smoke inlet chamber is arranged on the inverted quadrangular pyramid structure of the warehouse body 1, and is located near the position where the inverted quadrangular pyramid structure of the warehouse body 1 is connected to the cube structure; the smoke outlet 4 of the upper smoke exhaust chamber is arranged on the cube structure of the warehouse body 1, and is located near the top of the cube structure of the warehouse body 1.

[0031] In summary, this device integrates the three functions of desulfurization, dust removal and denitrification into one silo 1 to perform comprehensive purification treatment of flue gas, thereby improving the flue gas treatment efficiency. In addition, each silo 1 is supported by the support frame 2 designed in the upper and lower layers, and the longitudinal space on site is utilized to arrange each silo 1, which has a compact structure and saves floor space.

[0032] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A double-layer composite ceramic fiber filter tube desulfurization, dust removal and denitrification integrated device, characterized by: The smoke filter assembly comprises a bin body and a support frame, wherein a partition and a filter tube assembly are provided in the bin body, the partition can separate the bin body into a lower smoke inlet chamber and an upper smoke exhaust chamber, and the lower smoke inlet chamber is provided with a smoke inlet, and the upper smoke exhaust chamber is provided with a smoke outlet; the filter tube assembly comprises a composite ceramic fiber filter tube and a ceramic filter tube, the composite ceramic fiber filter tube is sleeved in the ceramic filter tube to form a double-layer sleeve structure, and the outer wall of the composite ceramic fiber filter tube is provided with a desulfurizer layer, and the inner wall of the composite ceramic fiber filter tube is provided with an SCR denitrification catalyst layer; the filter tube assembly is passed through the partition, and the closed end of the filter tube assembly is located in the lower smoke inlet chamber, and the pipe mouth end of the filter tube assembly is located in the upper smoke exhaust chamber; the support frame is a double-layer frame structure arranged in a vertical direction, and a bin body mounting position is formed in each layer of the frame structure; there are multiple bin bodies, and the bin bodies are arranged in a one-to-one correspondence with the bin body mounting positions.

2. The double-layer composite ceramic fiber filter tube desulfurization, dust removal and denitrification integrated device according to claim 1 is characterized in that: The filter tube assemblies are provided in multiple groups, and all the filter tube assemblies are distributed on the partitions of the corresponding bin bodies.

3. The double-layer composite ceramic fiber filter tube desulfurization, dust removal and denitrification integrated device according to claim 1 is characterized in that: The flue gas inlet of the lower smoke inlet chamber is connected to an air inlet flue, and the air inlet flue is provided with an ammonia injection port, which is used to inject ammonia so that the flue gas to be purified in the bin body can undergo a denitrification reaction.

4. The double-layer composite ceramic fiber filter tube desulfurization, dust removal and denitrification integrated device according to claim 1 is characterized in that: The smoke inlet of the lower smoke inlet chamber and the smoke outlet of the upper smoke exhaust chamber are both provided with baffle doors.

5. The double-layer composite ceramic fiber filter tube desulfurization, dust removal and denitrification integrated device according to claim 1 is characterized in that: An ash discharge port is provided at the bottom of the lower smoke inlet chamber, and the ash discharge port is connected to an ash discharge valve.

6. The double-layer composite ceramic fiber filter tube desulfurization, dust removal and denitrification integrated device according to claim 1 is characterized in that: The upper part of the warehouse body is a cubic structure, and the lower part of the warehouse body is an inverted quadrangular pyramid structure.

7. The double-layer composite ceramic fiber filter tube desulfurization, dust removal and denitrification integrated device according to claim 6, characterized in that: The smoke inlet of the lower smoke inlet chamber is arranged on the inverted quadrangular pyramid structure of the warehouse body, and is located near the position where the inverted quadrangular pyramid structure of the warehouse body is connected to the cube structure; the smoke outlet of the upper smoke exhaust chamber is arranged on the cube structure of the warehouse body, and is located near the top of the cube structure of the warehouse body.

8. The double-layer composite ceramic fiber filter tube integrated desulfurization, dust removal and denitrification device according to any one of claims 1 to 7, characterized in that: All of the bins are connected in parallel.

Images