Dust removal and waste heat recovery integrated equipment

Abstract

The invention relates to the technical field of flue gas dust removal and waste heat recovery, and provides dust removal and waste heat recovery integrated equipment which comprises a first dust removal unit and a second dust removal unit. Wherein the first dust removal unit is provided with a first dust removal chamber, a plurality of ceramic membrane pipes used for removing dust and a plurality of first heat exchange pipes used for waste heat recovery are arranged in the first dust removal chamber, and the first dust removal unit is provided with an air inlet communicated with the first dust removal chamber; the second dust removal unit is provided with a second dust removal chamber, the second dust removal chamber is communicated with the first dust removal chamber, a plurality of cloth bags for removing dust are arranged in the second dust removal chamber, and the second dust removal unit is provided with an air outlet communicated with the second dust removal chamber. Dust removal and waste heat recovery can be both considered, and the problem that in the prior art, the temperature span of flue gas treated by dust removal equipment is small is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas dust removal and waste heat recovery, and in particular to a dust removal and waste heat recovery integrated device. Background Art

[0002] As the ultra-low emission transformation of steel enterprises becomes more and more severe, in recent years, steel enterprises have newly built a number of environmental dust collectors for the treatment of unorganized and organized smoke dust. There are many high-temperature flue gases in these smoke dusts: primary dust removal flue gas from electric furnaces, secondary dust removal flue gas from converters, exhaust dust removal flue gas from refining furnaces, and dust removal flue gas from blast furnace iron-making yards. For this type of high-temperature flue gas, high-temperature filter bags, mixing valves, evaporative coolers, natural air coolers, and water-cooled flues are generally used for treatment. However, high-temperature filter bags are expensive, and other devices are only set up to cool the flue gas, and the waste heat of the flue gas is not recovered.

[0003] Furthermore, in the prior art, in the process flow of flue gas waste heat recovery and dust removal, equipment for waste heat recovery and dust removal are respectively provided, but the integration of the whole set of process equipment is not high and the investment cost is relatively high. Summary of the invention

[0004] The purpose of the present invention is to provide an integrated dust removal and waste heat recovery device, which can take into account both dust removal and waste heat recovery, and solve the problem of a small temperature span of flue gas treated by bag dust removal equipment in the prior art.

[0005] The above technical objectives of the present invention are mainly achieved through the following technical solutions:

[0006] The present invention provides an integrated dust removal and waste heat recovery device, which includes a first dust removal unit and a second dust removal unit; wherein the first dust removal unit has a first dust removal chamber, in which a plurality of ceramic membrane tubes for dust removal and a plurality of first heat exchange tubes for waste heat recovery are arranged, and the first dust removal unit is provided with an air inlet connected to the first dust removal chamber; the second dust removal unit has a second dust removal chamber, which is connected to the first dust removal chamber, in which a plurality of cloth bags for dust removal are arranged, and the second dust removal unit is provided with an air outlet connected to the second dust removal chamber.

[0007] The integrated dust removal and waste heat recovery equipment described in the present invention fully considers the characteristics of different filter materials, utilizes the high temperature resistance of ceramic membrane tubes, and combines them with ordinary cloth bags to avoid high equipment costs. This allows the equipment to heat recover high-temperature flue gas with a large span of 120°C to 500°C without the need to add flue gas cooling equipment before the inlet, and the ceramic membrane tubes can purify the flue gas, thereby reducing the number of cloth bags at the rear.

[0008] The integrated dust removal and waste heat recovery equipment described in the present invention can realize waste heat recovery of high-temperature flue gas with a large temperature span at a relatively low cost without affecting the dust removal effect. The flue gas heat recovered through the first heat exchange tube can be used to produce hot water, which greatly saves energy in the steel plant and provides a huge guarantee for the long-term development of the steel plant.

[0009] In a preferred embodiment of the present invention, a plurality of second heat exchange pipes for waste heat recovery are further provided in the second dust removal chamber.

[0010] In this embodiment, the flue gas after primary dust removal and waste heat recovery can be further heat exchanged and cooled through the second heat exchange tube in the second dust removal chamber, thereby further recovering the waste heat of the flue gas and improving the recovery effect of the waste heat of the flue gas. It can also avoid the flue gas temperature being too high after the primary heat exchange to a certain extent, thereby affecting the life of the cloth bag with poor heat resistance.

[0011] In a preferred embodiment of the present invention, a first partition is provided in the first dust removal chamber to divide the first dust removal chamber into a first turbid air chamber and a first clean air chamber which are independent of each other, and the air inlet is connected to the first turbid air chamber;

[0012] A second partition is provided in the second dust removal chamber to divide the second dust removal chamber into a second turbid air chamber and a second clean air chamber which are independent of each other. The first clean air chamber is communicated with the second turbid air chamber, and the air outlet is communicated with the second clean air chamber.

[0013] In this embodiment, both the first partition and the second partition can play a dividing role, thereby preventing the flue gas after dust removal and filtration from mixing with the flue gas that has not been dust removed and filtered, thereby ensuring the dust removal effect of the flue gas.

[0014] In a preferred embodiment of the present invention, the first partition is arranged obliquely downward along one end of the first dust removing chamber where the air inlet is provided, toward one end where the first dust removing chamber is connected to the second dust removing chamber; and / or the second partition is arranged obliquely downward along one end where the second dust removing chamber is connected to the first dust removing chamber, toward one end where the air outlet is provided, toward the second dust removing chamber.

[0015] In this embodiment, the first partition is tilted to guide the flow direction of the flue gas in the first dust removal chamber, guiding the flue gas to flow to the inlet of the ceramic membrane tube at the bottom of the first dust removal chamber, thereby improving the primary dust removal efficiency of the flue gas; the second partition is tilted to guide the flow direction of the flue gas in the second dust removal chamber, guiding the flue gas to flow to the inlet of the cloth bag at the bottom of the second dust removal chamber, further improving the secondary dust removal efficiency of the flue gas.

[0016] In a preferred embodiment of the present invention, a plurality of first chamber plates are further provided in the first dust removal chamber to divide the first dust removal chamber into a plurality of first sub-chambers, the first sub-chambers are interconnected, and a plurality of the ceramic membrane tubes are provided in each of the first sub-chambers;

[0017] A plurality of second chamber plates are further provided in the second dust removal chamber to divide the second dust removal chamber into a plurality of second sub-chambers, the second sub-chambers are interconnected, and a plurality of the cloth bags are provided in each of the second sub-chambers.

[0018] In this embodiment, a plurality of sub-chambers are separated by chamber plates, and a relatively independent filtering and dust removal area is formed in each sub-chamber, which is easy to manage; at the same time, the chamber plates can increase the setting area of ​​the heat exchange tubes, thereby improving the effect of flue gas waste heat recovery.

[0019] In a preferred embodiment of the present invention, a first header is provided on the side wall of each of the first sub-chambers, and a plurality of the first heat exchange tubes are arranged in the first header; and / or a second header is provided on the side wall of each of the second sub-chambers, and a plurality of the second heat exchange tubes are arranged in the second header.

[0020] In a preferred embodiment of the present invention, the plurality of ceramic membrane tubes in each of the first sub-chambers are arranged in a matrix; and / or the plurality of cloth bags in each of the second sub-chambers are arranged in a matrix.

[0021] In a preferred embodiment of the present invention, a first ash hopper is disposed at the bottom end of each of the first sub-chambers, and a second ash hopper is disposed at the bottom end of each of the second sub-chambers.

[0022] In this embodiment, the first ash hopper and the second ash hopper are both used to receive dust generated during the dust removal process and the back-blowing cleaning process.

[0023] In a preferred embodiment of the present invention, a blowing device is provided at the top of the first dust removal chamber and the top of the second dust removal chamber, and the blowing device has a blowing pipe facing the outlet of the ceramic membrane tube and the outlet of the bag.

[0024] In this embodiment, the blowing device is used to perform back-blowing and cleaning operations on the ceramic membrane tubes and the bags, ensuring that the ceramic membrane tubes and the bags can be reused multiple times.

[0025] In a preferred embodiment of the present invention, the integrated dust removal and waste heat recovery equipment includes two groups of the first dust removal units arranged side by side and two groups of the second dust removal units arranged side by side; the two groups of the first dust removal units share one air inlet, the two groups of the second dust removal units share one air outlet, and the blowing device is arranged between the two groups of the first dust removal units.

[0026] In this embodiment, by providing two sets of dust removal units in parallel, the flue gas treatment capacity of the integrated dust removal and waste heat recovery equipment can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. 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 creative work. In the drawings:

[0028] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0029] Figure 1 This is a schematic diagram of the top view of the structure of the dust removal and waste heat recovery integrated equipment of the present invention;

[0030] Figure 2 is a schematic structural diagram of the first dust removal unit of the present invention;

[0031] Figure 3 is a schematic structural diagram of the second dust removal unit of the present invention;

[0032] Figure 4 This is a front view structural schematic diagram of the dust removal and waste heat recovery integrated equipment of the present invention;

[0033] Figure 5 It is a side structural schematic diagram of the dust removal and waste heat recovery integrated equipment of the present invention.

[0034] Description of reference numerals:

[0035] 10. First dust removal unit; 11. First dust removal chamber; 111. First turbid air chamber; 112. First clean air chamber; 113. First sub-chamber; 114. First chamber plate; 12. Ceramic membrane tube; 13. First heat exchange tube; 14. Air inlet; 15. First partition plate; 16. First header box; 17. First ash hopper;

[0036] 20. Second dust removal unit; 21. Second dust removal chamber; 211. Second turbid air chamber; 212. Second clean air chamber; 213. Second sub-chamber; 214. Second chamber plate; 22. Cloth bag; 23. Second heat exchange tube; 24. Gas outlet; 25. Second partition plate; 26. Second header box; 27. Second ash hopper; 28. Ash conveying mechanism;

[0037] 30. Blowing device; 31. Blowing pipe. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments 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 creative work should fall within the scope of protection of the present invention.

[0039] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0041] like Figures 1 to 5 As shown, the present invention provides an integrated dust removal and waste heat recovery device, which includes a first dust removal unit 10 and a second dust removal unit 20. The first dust removal unit 10 has a first dust removal chamber 11, in which a plurality of ceramic membrane tubes 12 for dust removal and a plurality of first heat exchange tubes 13 for waste heat recovery are arranged, and the first dust removal unit 10 is provided with an air inlet 14 connected to the first dust removal chamber 11; the second dust removal unit 20 has a second dust removal chamber 21, which is connected to the first dust removal chamber 11, in which a plurality of cloth bags 22 for dust removal are arranged, and the second dust removal unit 20 is provided with an air outlet 24 connected to the second dust removal chamber 21.

[0042] The integrated dust removal and waste heat recovery equipment described in the present invention fully considers the characteristics of different filter materials, utilizes the high temperature resistance of the ceramic membrane tube 12, and at the same time, in order to avoid high equipment costs, combines it with ordinary cloth bags 22, so that the equipment can heat recover a large span of high-temperature flue gas of 120°C to 500°C without adding flue gas cooling equipment before the inlet, and the ceramic membrane tube 12 can filter and purify the flue gas, thereby reducing the number of rear cloth bags 22.

[0043] The integrated dust removal and waste heat recovery equipment described in the present invention can realize waste heat recovery of high-temperature flue gas with a large temperature span at a relatively low cost without affecting the dust removal effect. The flue gas heat recovered through the first heat exchange tube 13 can be used to produce hot water, which greatly saves energy in the steel plant and provides a guarantee for the long-term development of the steel plant.

[0044] The specific structure of each part of the integrated dust removal and waste heat recovery equipment of the present invention, as well as the position and connection relationship between the parts will be described in detail below.

[0045] like Figure 1 and Figure 2 As shown, the dust removal and waste heat recovery integrated device of the present invention has a first dust removal unit 10, which can be a dust collector in the form of one box and one chamber, or a dust collector in the form of one box and multiple chambers. Specifically, the first dust removal unit 10 has a box-type shell, a first dust removal chamber 11 is formed in the shell, and an air inlet 14 connected to the first dust removal chamber 11 is provided on the shell, and the air inlet 14 is used to connect the body smoke pipe, and the smoke in the smoke pipe can enter the first dust removal chamber 11 through the air inlet 14.

[0046] The first dust removal chamber 11 is provided with a plurality of ceramic membrane tubes 12, which are all arranged in the vertical direction, and each ceramic membrane tube 12 can be fixed in the housing through a grid plate; the ceramic membrane tube 12 is a flue gas filter material that can withstand high temperatures (maximum use temperature 650°C) and has a high dust removal efficiency, but its cost is relatively high. The flue gas entering the first dust removal chamber 11 can enter the ceramic membrane tube 12 through the inlet at the bottom of the ceramic membrane tube 12 for a primary filtration, and the filtered flue gas flows out from the outlet at the top of the ceramic membrane tube 12.

[0047] Furthermore, a plurality of first heat exchange tubes 13 are provided in the first dust removal chamber 11, and the first heat exchange tubes 13 can be fixed on the inner wall of the shell of the first dust removal unit 10. The first heat exchange tubes 13 can be passed with a heat exchange medium (usually cooling water) to recover the waste heat of the flue gas in the first dust removal chamber 11 by heat exchange.

[0048] like Figure 1 and Figure 3As shown, the dust removal and waste heat recovery integrated equipment described in the present invention has a second dust removal unit 20, which is arranged adjacent to the first dust removal unit 10. The second dust removal unit 20 can be a dust collector in the form of one box and one chamber, or a dust collector in the form of one box and multiple chambers; preferably, the second dust removal unit 20 can adopt a bag-type dust collector in the prior art. The second dust removal unit 20 has a box-type shell, and a second dust removal chamber 21 is formed in the shell. The second dust removal chamber 21 is connected to the first dust removal chamber 11, and the smoke in the first dust removal chamber 11 can enter the second dust removal chamber 21 after being filtered once. An air outlet 24 is provided on the shell of the second dust removal unit 20, and the air outlet 24 is connected to the second dust removal chamber 21. The smoke can be discharged through the air outlet 24 after secondary dust removal in the second dust removal chamber 21.

[0049] A plurality of bags 22 are arranged in the second dust removal chamber 21, and the plurality of bags 22 are arranged in the vertical direction. Each bag 22 can be fixed in the housing through a grid plate; the bag 22 has the characteristics of high dust removal efficiency and low price, but the bag 22 has poor high temperature resistance (the use temperature does not exceed 120°C). The smoke after the primary filtration enters the second dust removal chamber 21, and then the smoke can enter the bag 22 through the inlet at the bottom of the bag 22 for secondary filtration. The smoke after the secondary filtration flows out from the outlet at the top of the bag 22, and then is discharged through the outlet 24.

[0050] The first dust removal chamber 11 with ceramic membrane tubes 12 (high temperature resistance, but high cost) is set upstream of the second dust removal chamber 21. While the flue gas is being dusted once, the first heat exchange tube 13 in the first dust removal chamber 11 absorbs the residual heat of the flue gas, so that the flue gas is cooled down, ensuring that the flue gas enters the second dust removal chamber 21 at a lower temperature for secondary filtration. The above arrangement not only enables the equipment to heat recover high-temperature flue gas with a large span of 120℃ to 500℃, but also enables some bags 22 to be used for dust removal to reduce the cost of the equipment; while the flue gas is being filtered once, the residual heat of the flue gas is recovered to avoid waste of resources.

[0051] The structure and technical effects of the preferred embodiment of the integrated dust removal and waste heat recovery equipment of the present invention will be further described below.

[0052] According to one embodiment of the present invention, Figure 1 and Figure 3 As shown, a plurality of second heat exchange tubes 23 for waste heat recovery are also provided in the second dust removal chamber 21. The second heat exchange tubes 23 can be fixed on the inner wall of the shell of the second dust removal unit 20. A heat exchange medium (usually cooling water) is introduced into the second heat exchange tubes 23 to further recover waste heat from the flue gas in the second dust removal chamber 21 by heat exchange.

[0053] The flue gas after primary dust removal and waste heat recovery can be further cooled by heat exchange through the second heat exchange tube 23 in the second dust removal chamber 21, so as to further recover the waste heat of the flue gas and improve the recovery effect of the waste heat of the flue gas. It can also avoid the flue gas temperature being too high after the primary heat exchange to a certain extent, thereby affecting the life of the cloth bag 22 with poor heat resistance.

[0054] According to one embodiment of the present invention, Figure 4 As shown, a first partition plate 15 is provided in the first dust removal chamber 11 to divide the first dust removal chamber 11 into a first turbid air chamber 111 and a first clean air chamber 112 which are independent of each other, and the air inlet 14 is connected to the first turbid air chamber 111; a second partition plate 25 is provided in the second dust removal chamber 21 to divide the second dust removal chamber 21 into a second turbid air chamber 211 and a second clean air chamber 212 which are independent of each other, the first clean air chamber 112 is connected to the second turbid air chamber 211, and the air outlet 24 is connected to the second clean air chamber 212.

[0055] The first partition plate 15 and the second partition plate 25 can both play a dividing role, thereby preventing the smoke after dust removal and filtration from mixing with the smoke that has not been dust removed and filtered, thereby ensuring the dust removal effect of the smoke.

[0056] In one embodiment, the partitions may be arranged in a horizontal direction, that is, the ceramic membrane tube 12 vertically passes through the first partition 15 , and the cloth bag 22 vertically passes through the second partition 25 .

[0057] In another preferred embodiment, Figure 4 As shown, the partition can be arranged at an angle. Specifically, the first partition 15 is arranged at an angle downward from one end of the first dust removal chamber 11 where the air inlet 14 is provided, toward one end of the first dust removal chamber 11 connected to the second dust removal chamber 21; the second partition 25 is arranged at an angle downward from one end of the second dust removal chamber 21 connected to the first dust removal chamber 11, toward one end of the second dust removal chamber 21 where the air outlet 24 is provided. The first partition 15 is arranged at an angle to guide the flow direction of the flue gas in the first dust removal chamber 11, and guide the flue gas to the entrance of the ceramic membrane tube 12 at the bottom of the first dust removal chamber 11, thereby improving the primary dust removal efficiency of the flue gas; the second partition 25 is arranged at an angle to guide the flow direction of the flue gas in the second dust removal chamber 21, and guide the flue gas to the entrance of the cloth bag 22 at the bottom of the second dust removal chamber 21, thereby further improving the secondary dust removal efficiency of the flue gas.

[0058] According to one embodiment of the present invention, Figure 2 As shown, a plurality of first chamber plates 114 are further provided in the first dust removal chamber 11 to divide the first dust removal chamber 11 into a plurality of first sub-chambers 113, each of the first sub-chambers 113 is connected, and each of the first sub-chambers 113 is provided with a plurality of ceramic membrane tubes 12; Figure 3As shown, a plurality of second chamber plates 214 are further provided in the second dust removal chamber 21 to divide the second dust removal chamber 21 into a plurality of second sub-chambers 213 . The second sub-chambers 213 are interconnected, and a plurality of cloth bags 22 are provided in each second sub-chamber 213 .

[0059] Multiple sub-chambers are separated by chamber plates, and a relatively independent filtering and dust removal area is formed in each sub-chamber, which is easy to manage; at the same time, the chamber plates can increase the setting area of ​​the heat exchange tubes, thereby improving the effect of flue gas waste heat recovery.

[0060] Further, such as Figure 2 and Figure 3 As shown, the multiple ceramic membrane tubes 12 in each first sub-chamber 113 are arranged in a matrix; and the multiple cloth bags 22 in each second sub-chamber 213 are arranged in a matrix.

[0061] According to one embodiment of the present invention, Figure 3 and Figure 4 As shown, a first header 16 is provided on the side wall of each first sub-chamber 113 , and a plurality of first heat exchange tubes 13 are arranged in the first header 16 ; a second header 26 is provided on the side wall of each second sub-chamber 213 , and a plurality of second heat exchange tubes 23 are arranged in the second header 26 .

[0062] According to one embodiment of the present invention, Figure 4 and Figure 5 As shown, the bottom end of each first sub-chamber 113 is provided with a first ash hopper 17, and the bottom end of each second sub-chamber 213 is provided with a second ash hopper 27. The first ash hopper 17 and the second ash hopper 27 are both used to receive dust generated during the filtering and dust removal process and the back-blowing and dust cleaning process. The bottom of the first ash hopper 17 and the second ash hopper 27 are both provided with an ash conveying mechanism 28, which is used to discharge the smoke and dust accumulated in the ash hopper by pneumatic conveying.

[0063] According to one embodiment of the present invention, Figure 4 and Figure 5 As shown, the top of the first dust removal chamber 11 and the top of the second dust removal chamber 21 are both provided with a blowing device 30, and the blowing device 30 has a blowing pipe 31 facing the outlet of the ceramic membrane tube 12 and the outlet of the bag 22. The blowing device 30 is used to perform back-blowing and cleaning operations on the ceramic membrane tube 12 and the bag 22 to ensure that the ceramic membrane tube 12 and the bag 22 can be reused multiple times.

[0064] According to one embodiment of the present invention, Figure 1As shown, the dust removal and waste heat recovery integrated equipment includes two groups of first dust removal units 10 arranged side by side and two groups of second dust removal units 20 arranged side by side; the two groups of first dust removal units 10 share an air inlet 14, the two groups of second dust removal units 20 share an air outlet 24, and the blowing device 30 is arranged between the two groups of first dust removal units 10. By arranging two parallel groups of dust removal units, the flue gas treatment capacity of the dust removal and waste heat recovery integrated equipment can be improved.

[0065] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A dust removal and waste heat recovery integrated equipment, characterized in that: include: A first dust removal unit (10), the first dust removal unit (10) comprising a first dust removal chamber (11), a plurality of ceramic membrane tubes (12) for dust removal and a plurality of first heat exchange tubes (13) for waste heat recovery being arranged in the first dust removal chamber (11), the first dust removal unit (10) being provided with an air inlet (14) communicating with the first dust removal chamber (11); A second dust removal unit (20), the second dust removal unit (20) having a second dust removal chamber (21), the second dust removal chamber (21) being connected to the first dust removal chamber (11), a plurality of cloth bags (22) for dust removal being arranged in the second dust removal chamber (21), and the second dust removal unit (20) being provided with an air outlet (24) being connected to the second dust removal chamber (21).

2. The dust removal and waste heat recovery integrated equipment according to claim 1 is characterized in that: A plurality of second heat exchange pipes (23) for recovering waste heat are also provided in the second dust removal chamber (21).

3. The dust removal and waste heat recovery integrated equipment according to claim 1 or 2, characterized in that: A first partition plate (15) is provided in the first dust removal chamber (11) to divide the first dust removal chamber (11) into a first turbid air chamber (111) and a first clean air chamber (112) which are independent of each other, and the air inlet (14) is connected to the first turbid air chamber (111); A second partition plate (25) is provided in the second dust removal chamber (21) to divide the second dust removal chamber (21) into a second turbid air chamber (211) and a second clean air chamber (212) which are independent of each other; the first clean air chamber (112) is connected to the second turbid air chamber (211); and the air outlet (24) is connected to the second clean air chamber (212).

4. The integrated dust removal and waste heat recovery equipment according to claim 3 is characterized in that: The first partition plate (15) is arranged obliquely downward along one end of the first dust removing chamber (11) where the air inlet (14) is provided, and is disposed toward one end of the first dust removing chamber (11) connected to the second dust removing chamber (21); and / or, the second partition plate (25) is arranged obliquely downward along one end of the second dust removing chamber (21) where the air outlet (24) is provided, and is disposed toward one end of the second dust removing chamber (21) where the air inlet (14) is provided.

5. The dust removal and waste heat recovery integrated equipment according to claim 2, characterized in that: A plurality of first chamber plates (114) are further provided in the first dust removal chamber (11) to divide the first dust removal chamber (11) into a plurality of first sub-chambers (113); the first sub-chambers (113) are interconnected, and a plurality of the ceramic membrane tubes (12) are provided in each of the first sub-chambers (113); A plurality of second chamber plates (214) are also provided in the second dust removal chamber (21) so as to divide the second dust removal chamber (21) into a plurality of second sub-chambers (213); the second sub-chambers (213) are interconnected, and a plurality of the cloth bags (22) are provided in each of the second sub-chambers (213).

6. The dust removal and waste heat recovery integrated equipment according to claim 5, characterized in that: A first header (16) is provided on the side wall of each of the first sub-chambers (113), and a plurality of the first heat exchange tubes (13) are arranged in the first header (16); and / or a second header (26) is provided on the side wall of each of the second sub-chambers (213), and a plurality of the second heat exchange tubes (23) are arranged in the second header (26).

7. The integrated dust removal and waste heat recovery equipment according to claim 5 is characterized in that: The plurality of ceramic membrane tubes (12) in each of the first sub-chambers (113) are arranged in a matrix; and / or the plurality of cloth bags (22) in each of the second sub-chambers (213) are arranged in a matrix.

8. The integrated dust removal and waste heat recovery equipment according to claim 5 is characterized in that: A first ash hopper (17) is provided at the bottom end of each of the first sub-chambers (113), and a second ash hopper (27) is provided at the bottom end of each of the second sub-chambers (213).

9. The dust removal and waste heat recovery integrated equipment according to claim 5, characterized in that: The top of the first dust removal chamber (11) and the top of the second dust removal chamber (21) are both provided with a blowing device (30), and the blowing device (30) has a blowing pipe (31) facing the outlet of the ceramic membrane tube (12) and the outlet of the cloth bag (22).

10. The integrated dust removal and waste heat recovery equipment according to claim 9, characterized in that: The integrated dust removal and waste heat recovery device comprises two groups of the first dust removal units (10) arranged side by side and two groups of the second dust removal units (20) arranged side by side; Two groups of the first dust removal units (10) share one air inlet (14), two groups of the second dust removal units (20) share one air outlet (24), and the blowing device (30) is arranged between the two groups of the first dust removal units (10).

Images