Indirect cooling and purifying device for flue gas

Abstract

The invention relates to the technical field of flue gas treatment, in particular to a flue gas indirect cooling and purifying device.The flue gas indirect cooling and purifying device comprises a tower body, an adsorption barrel supporting assembly and a plurality of adsorption barrels, the tower body defines a cavity, and the adsorption barrel supporting assembly comprises a first supporting piece and a second supporting piece; the first supporting piece and the second supporting piece are arranged in the tower body in a spaced mode in the vertical direction, the first supporting piece and the second supporting piece sequentially divide the cavity into a gas inlet cavity, a heat exchange cavity and a gas purification cavity from bottom to top, and the tower body is provided with a flue gas inlet communicating with the gas inlet cavity and a flue gas outlet communicating with the gas purification cavity; the tower body is further provided with a cooling water inlet and a cooling water outlet which are communicated with the heat exchange cavity, the adsorption barrel is arranged in the heat exchange cavity, and the gas inlet cavity and the gas purification cavity are communicated through the adsorption barrel. According to the indirect cooling and purifying device for the flue gas, spray tower equipment is not needed, the flue gas and the adsorbent can be cooled, and the flue gas purifying efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas treatment, and in particular to a flue gas indirect cooling and purification device. Background Art

[0002] The power, building materials, steel and other industries are seriously polluting, producing large amounts of smoke and harmful gases. Low-temperature flue gas pollutant removal technology can meet the needs of integrated removal of various pollutants in flue gas. This technology has become the main technical direction and research hotspot for the treatment of multiple pollutants in flue gas.

[0003] In the related art, a spray tower is used to spray and cool the flue gas discharged from the boiler, and the cooled flue gas is transported to an adsorption tower for adsorption and purification treatment. Since a special spray tower equipment is required to cool the flue gas, the cost of the entire system is high, and the adsorption efficiency of the adsorbent is low during the adsorption and purification of the flue gas in the adsorption tower. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention proposes a flue gas indirect cooling purification device, which does not require spray tower equipment and can cool the flue gas and adsorbent at the same time, thereby improving the flue gas purification efficiency.

[0006] The flue gas indirect cooling purification device of the embodiment of the present invention includes: a tower body, an adsorption tube support assembly and a plurality of adsorption tubes, the tower body defines a cavity, the adsorption tube support assembly includes a first support member and a second support member, the first support member and the second support member are arranged in the tower body at intervals along the vertical direction, the first support member and the second support member divide the cavity into an air intake cavity, a heat exchange cavity and a clean air cavity from bottom to top in sequence, the tower body is provided with a flue gas inlet connected to the air intake cavity and a flue gas outlet connected to the clean air cavity, the tower body is also provided with a cooling water inlet and a cooling water outlet connected to the heat exchange cavity, the adsorption tube is arranged in the heat exchange cavity, and the air intake cavity and the clean air cavity are connected through the adsorption tube.

[0007] The flue gas indirect cooling purification device of the embodiment of the present invention does not require spray tower equipment, can cool the flue gas and adsorbent, and improve the flue gas purification efficiency.

[0008] In some embodiments, the tower body includes a connected adsorption section and a discharge section, the discharge section is located below the adsorption section, the upper end of the adsorption section is provided with a plurality of adsorbent inlets connected to the clean air cavity, and the lower end of the discharge section is provided with an adsorbent outlet connected to the air inlet cavity.

[0009] In some embodiments, the cross-sectional area of ​​the discharge section gradually decreases from top to bottom.

[0010] In some embodiments, the flue gas indirect cooling and purification device also includes a cloth assembly, which is arranged above the tower body. The cloth assembly includes a storage tank and a plurality of cloth pipes connected to the storage tank. The plurality of cloth pipes correspond one-to-one to the plurality of adsorbent inlets. The cloth pipe passes through the adsorbent inlet to connect the cavity of the storage tank with the clean air cavity. A valve is provided on the cloth pipe.

[0011] In some embodiments, the flue gas indirect cooling purification device further includes a discharge valve, and the discharge valve is arranged at the adsorbent outlet.

[0012] In some embodiments, the first support member and the second support member are both circular support plates, the first support plate and the second support plate are both horizontally arranged, and the peripheral wall of the first support member and the peripheral wall of the second support member are respectively tightly matched with the inner peripheral wall of the adsorption section.

[0013] In some embodiments, a plurality of first through holes corresponding to the plurality of adsorption cylinders are provided on the first support member, the upper end of the adsorption cylinder is connected to the lower wall of the first support member, the upper end opening of the adsorption cylinder is communicated with the corresponding first through hole, and a plurality of second through holes corresponding to the plurality of adsorption cylinders are provided on the second support member, the lower end of the adsorption cylinder is connected to the upper wall of the second support member, the lower end opening of the adsorption cylinder is communicated with the corresponding second through hole.

[0014] In some embodiments, the cooling water inlet is located at the lower portion of the heat exchange chamber, and the cooling water outlet is located at the upper portion of the heat exchange chamber.

[0015] In some embodiments, the flue gas indirect cooling and purification device further includes a baffle assembly, and the baffle assembly is disposed in the heat exchange chamber to baffle and rise the cooling water entering the heat exchange chamber.

[0016] In some embodiments, the deflector assembly includes a plurality of deflector baffles, the plurality of deflector baffles are spaced apart in the vertical direction, the deflector baffles define rising notches, and two adjacent rising notches are staggered in the vertical direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of a flue gas indirect cooling purification device according to an embodiment of the present invention.

[0018] Reference numerals:

[0019] Tower body 1, air inlet cavity 11, heat exchange cavity 12, clean air cavity 13, cooling water inlet 14, cooling water outlet 15, unloading section 16, flue gas inlet 17, flue gas outlet 18, adsorption cylinder 2, adsorption cylinder support assembly 3, first support member 31, second support member 32, material distribution assembly 4, storage tank 41, material distribution pipe 42, valve 421, unloading valve 5, deflection baffle 6. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0021] The indirect cooling and purification device for flue gas according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0022] like Figure 1 As shown, the flue gas indirect cooling purification device according to the embodiment of the present invention comprises a tower body 1 , an adsorption tube support assembly 3 and a plurality of adsorption tubes 2 .

[0023] The tower wall of the tower body 1 defines a cavity, that is, the tower body has an inner cavity. The adsorption cylinder support assembly 3 includes a first support member 31 and a second support member 32, which are arranged in the tower body 1 at intervals along the vertical direction, and the first support member 31 and the second support member 32 divide the cavity into an air inlet cavity 11, a heat exchange cavity 12 and a clean air cavity 13 from bottom to top.

[0024] The tower body 1 is provided with a smoke inlet 17 communicating with the air inlet chamber 11 and a smoke outlet 18 communicating with the clean air chamber. The tower body 1 is also provided with a cooling water inlet 14 and a cooling water outlet 15 communicating with the heat exchange chamber 12. The adsorption cylinder 2 is arranged in the heat exchange chamber 12, and the air inlet chamber 11 and the clean air chamber 13 are connected through the adsorption cylinder 2.

[0025] Specifically, Figure 1 As shown, the tower body 1 is cylindrical and extends in the up-down direction. The first support member 31 and the second support member 32 are arranged in the cavity at intervals in the up-down direction to divide the cavity into an air inlet cavity 11, a heat exchange cavity 12 and a clean air cavity 13 arranged in sequence from bottom to top.

[0026] A plurality of adsorption tubes 2 are evenly arranged in the heat exchange chamber 12, and the adsorption tubes 2 extend in the up-down direction. The upper end of the adsorption tube 2 is connected to the clean gas chamber 13, and the lower end of the adsorption tube 2 is connected to the air inlet chamber 11. Adsorbents are arranged in the adsorption tube 2, the air inlet chamber 11, and the clean gas chamber 13 to adsorb and purify the flue gas into clean flue gas. A flue gas inlet 17 is arranged at the lower part of the tower body 1, and a flue gas outlet 18 is arranged at the upper part of the tower body 1, so that the flue gas can flow upward after entering the tower body 1.

[0027] The cooling water enters the heat exchange chamber 12 from the cooling water inlet 14, and the cooling water in the heat exchange chamber 12 indirectly cools the flue gas and the adsorbent in the adsorption tube. The cooling water inlet 14 is arranged at the lower part of the heat exchange chamber 12, and the cooling water outlet 15 is arranged at the upper part of the heat exchange chamber 12. The cooling water after heat exchange is discharged from the tower body 1 through the cooling water outlet 15.

[0028] It can be understood that the flue gas indirect cooling purification device of the embodiment of the present invention is externally connected to a cooling device, the outlet of the cooling device is connected to the cooling water inlet 14, and the inlet of the cooling device is connected to the cooling water outlet 15, and the cooling device is used to cool the cooling water.

[0029] Thus, the flue gas is adsorbed and purified at low temperature in the adsorption tube 3 , and the purified clean flue gas enters the clean gas cavity 13 and is discharged from the tower body 1 through the flue gas outlet 18 .

[0030] For example, the flue gas enters the air inlet chamber 11 from the flue gas inlet 17 of the tower body 1, and the flue gas flows into the adsorption tube 2. The cooling water in the heat exchange chamber 12 indirectly cools the flue gas and the adsorbent in the adsorption tube 2, so that the flue gas is adsorbed and purified into clean flue gas under a low temperature environment. The clean flue gas enters the clean gas chamber 13 and is discharged from the tower body 1 through the flue gas outlet 18. In addition, adsorption heat is generated during the adsorption purification process of the flue gas in the adsorption tube 2, and the cooling water can take away the adsorption heat in time to avoid affecting the purification effect of the flue gas.

[0031] The flue gas indirect cooling purification device of the embodiment of the present invention is provided with an adsorption tube 2 and a heat exchange chamber 12, and cooling water is continuously introduced into the heat exchange chamber 12 to indirectly cool the adsorbent and flue gas in the adsorption tube 2, thereby improving the flue gas adsorption efficiency.

[0032] Compared with the related art that uses spray tower equipment to cool the flue gas, the flue gas indirect cooling and purification device in the embodiment of the present invention does not require spray tower equipment, and integrates the cooling and adsorption of the flue gas in one tower, thereby reducing the equipment's footprint and manufacturing cost, and reducing the cold loss of low-temperature flue gas during transportation, thereby achieving efficient energy utilization.

[0033] In some embodiments, the tower body 1 includes a connected adsorption section and a discharge section 16, the discharge section 16 is located below the adsorption section, the upper end of the adsorption section is provided with a plurality of adsorbent inlets connected to the clean air cavity 13, and the lower end of the discharge section 16 is provided with an adsorbent outlet connected to the air inlet cavity 11.

[0034] It is understandable that when the adsorbent is saturated with adsorption, the adsorbent is discharged through the adsorbent outlet. Accordingly, the operator adds the adsorbent into the adsorption section through the adsorbent inlet, that is, adds the adsorbent into the clean air cavity 13, the adsorption cylinder 2 and the air inlet cavity 11.

[0035] In some embodiments, the cross-sectional area of ​​the discharge section 16 gradually decreases from top to bottom.

[0036] Specifically, Figure 1 As shown, the cross-sectional area of ​​the discharge section 16 in the left-right direction gradually decreases from top to bottom, that is, the shape of the discharge section 16 is a frustum, which facilitates the adsorbent to slide downward and gather at the adsorbent outlet of the tower body 1.

[0037] In some embodiments, the flue gas indirect cooling purification device also includes a cloth assembly 4, which is arranged above the tower body 1. The cloth assembly 4 includes a storage tank 41 and a plurality of cloth pipes 42 connected to the storage tank 41. The plurality of cloth pipes 42 correspond one-to-one to the plurality of adsorbent inlets. The cloth pipes 42 pass through the adsorbent inlet to connect the cavity of the storage tank 41 with the clean air cavity 13. A valve 421 is provided on the cloth pipe 42.

[0038] Specifically, Figure 1 As shown, the distribution assembly 4 is arranged at the upper end of the tower body 1 so that the adsorbent in the tower body 1 can flow into the clean gas cavity 13 under the action of gravity. The storage tank 41 is suitable for containing the adsorbent. The lower end of the storage tank 41 is connected to the upper end of the distribution pipe 42 to discharge the adsorbent into the distribution pipe 42. The lower end of the distribution pipe 42 passes through the adsorbent inlet to discharge the adsorbent into the clean gas cavity 13. The upper end of the distribution pipe 42 is provided with a valve 421 to control the storage tank 41 to pass the adsorbent into the adsorption cylinder 2. The inlet of the valve 421 is connected to the outlet of the storage tank 41, and the outlet of the valve 421 is connected to the inlet of the distribution pipe 42. The valve 421 is opened or closed to control whether the adsorbent in the storage tank 41 is passed into the distribution pipe 42, which is convenient for the operator to add the adsorbent according to the actual situation, thereby improving the convenience and stability of the flue gas indirect cooling purification device.

[0039] There are multiple distribution pipes 42 and multiple adsorbent inlets, and the multiple distribution pipes 42 correspond to the adsorbent inlets one by one, thereby improving the uniformity of distribution.

[0040] Furthermore, the flue gas indirect cooling purification device also includes a discharge valve 5, which is arranged at the adsorbent outlet. By providing the discharge valve 5, it is convenient for operators to discharge the adsorbent in the tower body 1, thereby improving the controllability of discharge.

[0041] In some embodiments, the first support member 31 and the second support member 32 are both circular support plates, the first support plate and the second support plate are both horizontally arranged, and the peripheral wall of the first support member 31 and the peripheral wall of the second support member 32 are respectively tightly matched with the inner peripheral wall of the adsorption section.

[0042] Specifically, Figure 1As shown, the first support member 31 and the second support member 32 are both circular support plates, and the inner wall of the tower body 1 is in contact with the first support member 31 and the second support member 32 to divide the cavity of the tower body 1 into an adsorption cylinder 2, an air inlet cavity 11 and a clean air cavity 13. The inner wall of the tower body 1 and the first support member 31 and the second support member 32 can be interference fit to prevent the flue gas from flowing between the inner wall of the tower body 1 and the first support member 31 and the second support member 32, thereby improving the stability of the use of the flue gas indirect cooling purification device.

[0043] In some embodiments, the first support member 31 is provided with a plurality of first through holes corresponding one-to-one to the plurality of adsorption cylinders 2, the upper end of the adsorption cylinder 2 is connected to the lower wall surface of the first support member 31, and the upper end opening of the adsorption cylinder 2 is connected to the first through hole corresponding thereto, and the second support member 32 is provided with a plurality of second through holes corresponding one-to-one to the plurality of adsorption cylinders 2, the lower end of the adsorption cylinder 2 is connected to the upper wall surface of the second support member 32, and the lower end opening of the adsorption cylinder 2 is connected to the second through hole corresponding thereto.

[0044] Specifically, Figure 1 As shown, the upper end of the adsorption cylinder 2 is connected to the lower wall surface of the first support member 31, that is, the upper end of the adsorption cylinder 2 is connected to the clean air cavity 13 through the first through hole, and the lower end of the adsorption cylinder 2 is connected to the upper wall surface of the second support member 32, that is, the lower end of the adsorption cylinder 2 is connected to the clean air cavity 13 through the second through hole, thereby discharging the flue gas in the adsorption cylinder 2 into the clean air cavity 13.

[0045] The plurality of adsorption cylinders 2 correspond to the plurality of first through holes and the plurality of second through holes one by one, thereby increasing the flow rate of the adsorbent and the flue gas. It should be noted that the shape of the adsorption cylinder 2 is cylindrical, or the adsorption cylinder 2 is other existing shapes, for example, the shape of the adsorption cylinder 2 is a cuboid, so as to be suitable for different applicable environments.

[0046] In some embodiments, the flue gas indirect cooling and purification device further includes a baffle assembly, which is disposed in the heat exchange chamber 12 to baffle and rise the cooling water entering the heat exchange chamber 12 .

[0047] It is understandable that if Figure 1 As shown, the baffle assembly is arranged in the heat exchange chamber 12 to make the cooling water baffle and rise from bottom to top, so as to increase the flow path of the cooling water in the heat exchange chamber 12, thereby improving the heat exchange effect.

[0048] Alternatively, if Figure 1 As shown, the deflector assembly includes a plurality of deflector baffles 6, and the plurality of deflector baffles 6 are spaced apart in the vertical direction. The deflector baffles 6 define rising notches, and two adjacent rising notches are staggered in the vertical direction.

[0049] Specifically, Figure 1As shown, one end of the baffle plate 6 is connected to the inner wall of the tower body 1, and the baffle plates 6 are spaced apart in the up and down directions. The baffle plates 6 and the inner wall of the tower body 1 define a rising notch, or the baffle plates 6 themselves define a rising notch located at the center thereof.

[0050] A plurality of deflection baffles 6 are arranged at intervals in the up and down directions in the heat exchange chamber 12 to form a deflection channel. The inlet of the deflection channel is connected to the cooling water inlet 14, and the outlet of the deflection channel is connected to the cooling water outlet 15, so that the cooling water is deflected from bottom to top in the heat exchange chamber 12, increasing the flow path of the cooling water in the heat exchange chamber 12, thereby improving the cooling efficiency and cooling effect.

[0051] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0056] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A flue gas indirect cooling purification device, characterized in that: include: a tower body, the tower body defining a cavity; An adsorption cylinder support assembly, the adsorption cylinder support assembly comprises a first support member and a second support member, the first support member and the second support member are arranged in the tower body at intervals along the vertical direction, the first support member and the second support member divide the cavity into an air intake cavity, a heat exchange cavity and a clean gas cavity from bottom to top, the tower body is provided with a smoke inlet connected to the air intake cavity and a smoke outlet connected to the clean gas cavity, and the tower body is also provided with a cooling water inlet and a cooling water outlet connected to the heat exchange cavity; A plurality of adsorption tubes are provided in the heat exchange chamber, and the air inlet chamber and the clean air chamber are connected through the adsorption tubes.

2. The flue gas indirect cooling purification device according to claim 1, characterized in that: The tower body comprises a connected adsorption section and a discharge section, wherein the discharge section is located below the adsorption section, the upper end of the adsorption section is provided with a plurality of adsorbent inlets connected to the clean air cavity, and the lower end of the discharge section is provided with an adsorbent outlet connected to the air inlet cavity.

3. The flue gas indirect cooling purification device according to claim 2, characterized in that: The cross-sectional area of ​​the discharge section gradually decreases from top to bottom.

4. The flue gas indirect cooling purification device according to claim 3, characterized in that: It also includes a distribution component, which is arranged above the tower body. The distribution component includes a storage tank and a plurality of distribution pipes connected to the storage tank. The plurality of distribution pipes correspond one-to-one to the plurality of adsorbent inlets. The distribution pipes pass through the adsorbent inlets to connect the cavity of the storage tank with the clean air cavity. A valve is provided on the distribution pipe.

5. The flue gas indirect cooling purification device according to claim 4, characterized in that: It also includes a discharge valve, which is arranged at the adsorbent outlet.

6. The flue gas indirect cooling purification device according to claim 2, characterized in that: The first support member and the second support member are both circular support plates, the first support plate and the second support plate are both horizontally arranged, and the peripheral wall of the first support member and the peripheral wall of the second support member are respectively tightly matched with the inner peripheral wall of the adsorption section.

7. The flue gas indirect cooling purification device according to claim 6, characterized in that: The first support member is provided with a plurality of first through holes corresponding to the plurality of adsorption cylinders one by one, the upper end of the adsorption cylinder is connected to the lower wall of the first support member, the upper end opening of the adsorption cylinder is communicated with the first through hole corresponding thereto, and the second support member is provided with a plurality of second through holes corresponding thereto, the lower end of the adsorption cylinder is connected to the upper wall of the second support member, the lower end opening of the adsorption cylinder is communicated with the second through hole corresponding thereto.

8. The flue gas indirect cooling purification device according to claim 1, characterized in that: The cooling water inlet is located at the lower part of the heat exchange cavity, and the cooling water outlet is located at the upper part of the heat exchange cavity.

9. The flue gas indirect cooling purification device according to claim 8, characterized in that: It also includes a deflection component, which is arranged in the heat exchange cavity to make the cooling water entering the heat exchange cavity deflect and rise.

10. The flue gas indirect cooling purification device according to claim 9, characterized in that: The deflector assembly includes a plurality of deflector baffles, which are spaced apart in the vertical direction. The deflector baffles define rising notches, and two adjacent rising notches are staggered in the vertical direction.

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