Agent adding device for purifying ammonia flue gas desulfurization absorption liquid of boiler

Abstract

The utility model discloses a boiler ammonia process flue gas desulfurization absorption liquid purification agent adding device which comprises a purification box and a liquid storage box used for storing purification liquid, the liquid storage box is fixedly installed on the outer side of the purification box, and a storage cavity used for storing absorption liquid and a mixing cavity are formed in the purification box. A conveying pipe is installed in the liquid storage box, a pipe body of the conveying pipe extends into the purification box, a plurality of first spray heads and a plurality of second spray heads are installed on the outer side of the conveying pipe, the first spray heads are used for spraying purification liquid in the liquid storage box, a connecting pipe is installed at the position of the storage cavity, and the connecting pipe is connected with the second spray heads. According to the device, the absorption liquid and the purification liquid are sprayed at the same time through the multiple nozzles, so that the absorption liquid and the purification liquid can be fully mixed, the dust separation effect of the absorption liquid is improved, the normal desulfurization absorption function of the recovered absorption liquid is maintained, and the resource consumption is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas desulfurization devices, in particular to a reagent adding device for purifying boiler ammonia flue gas desulfurization absorption liquid. Background Art

[0002] Flue gas desulfurization and denitrification technology is a boiler flue gas purification technology used in the chemical industry that produces a lot of nitrogen oxides and sulfur oxides. Nitrogen oxides and sulfur oxides are one of the main sources of air pollution, so the application of this technology has many benefits for environmental air purification. Currently, there are a variety of easy-to-use flue gas desulfurization absorption liquid addition devices, but most of these absorption liquid addition devices are inconvenient to use and waste absorption liquid.

[0003] For example, the patent with application number: 202023314710.1 discloses a catalyst adding device for flue gas denitrification and desulfurization, including a purification box, the outside of the purification box is fixedly connected to a support platform, the top of the support platform is fixedly connected to a feed box, the top of the feed box is movably connected to a top cover, the top of the top cover is fixedly installed with a drive motor, the bottom of the top cover is fixedly installed with a rolling bearing, the inside of the rolling bearing is fixedly connected with a drive rod fixedly connected to the output shaft of the drive motor to ensure smooth operation of the structure, the top cover prevents the catalyst inside the feed box from losing its original activity due to external interference, and the feed funnel facilitates addition to ensure adequate supply of catalyst.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the above-mentioned structure completes the desulfurization task by spraying the catalyst stored in the feed box into the purification box to react with the sulfur in the flue gas, but it is inconvenient to recover the catalyst. In actual use, the absorption liquid can be replaced and naturally clarified after use in desulfurization, and then reused, which helps to reduce resource consumption and reduce production costs. Therefore, a reagent adding device for purifying the absorption liquid for boiler ammonia flue gas desulfurization is proposed. Utility Model Content

[0005] In order to solve the problems in the above-mentioned background technology, the utility model provides a reagent adding device for purifying the absorption liquid of boiler ammonia flue gas desulfurization.

[0006] The utility model adopts the following technical scheme: a reagent adding device for purifying absorption liquid of boiler ammonia flue gas desulfurization, comprising a purification box and a liquid storage tank for storing purified liquid, the liquid storage tank is fixedly installed on the outside of the purification box, a storage chamber and a mixing chamber for storing absorption liquid are opened in the purification box, a delivery pipe is installed in the liquid storage tank, the pipe body of the delivery pipe extends into the purification box, a plurality of first nozzles and a plurality of second nozzles are installed on the outside of the delivery pipe, the first nozzle is used to spray the purified liquid in the liquid storage tank, a connecting pipe is installed at the storage chamber, the connecting pipe is connected to the second nozzle, and the second nozzle is used to spray the absorption liquid in the storage chamber.

[0007] As a preferred embodiment of the utility model, a first delivery pump is installed on the delivery pipe, and the first nozzles are symmetrically and parallelly arranged on both sides of the delivery pipe, and the nozzles of the first nozzles are oriented towards the inner wall of the purification box.

[0008] As a preferred embodiment of the utility model, a second delivery pump is installed on the connecting pipe, and the second nozzle is installed to the upper part of the delivery pipe, and the nozzle of the second nozzle is oriented towards the top wall of the purification box.

[0009] As a preferred embodiment of the present invention, a baffle is further installed in the purification box, and the baffle is located directly below the delivery pipe.

[0010] As a preferred embodiment of the present invention, the baffle is in an inverted V shape.

[0011] As a preferred embodiment of the present invention, a feed pipe is installed at the upper portion of the storage chamber, and a discharge pipe is installed at the bottom of the mixing chamber.

[0012] As a preferred embodiment of the utility model, a feed port is provided on the liquid storage tank, and a dust cover is movably installed on the feed port.

[0013] As a preferred embodiment of the present invention, a filter screen for filtering impurities is installed in the feed inlet.

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

[0015] The utility model sprays purification liquid into the purification box through the first nozzle, and the purification liquid adopts anionic polyacrylamide flocculant. At the same time, the second nozzle sprays the absorption liquid in the storage chamber, so that the absorption liquid and the purification liquid can be fully contacted and mixed during the spraying process, and the ammonium sulfate in the absorption liquid and the dust are separated. The dust separation effect is good, and the absorption liquid after treatment maintains normal desulfurization and absorption function and can be used again, so that the recovered absorption liquid can be reused, which reduces the consumption of resources and greatly reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the purification box structure of the utility model;

[0017] Figure 2 It is a schematic cross-sectional view of the purification box structure of the utility model;

[0018] Figure 3 It is a schematic cross-sectional view of the purification box structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the delivery pipe of the utility model.

[0020] In the figure: 1, purification box; 11, storage chamber; 111, feed pipe; 12, mixing chamber; 121, discharge pipe; 13, baffle; 2, liquid storage tank; 21, delivery pipe; 211, first delivery pump; 212, first nozzle; 213, second nozzle; 22, connecting pipe; 221, second delivery pump; 23, feed port; 231, filter screen. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed 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 in this article are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly connected by technicians in the technical field of the present invention. The terms used 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 in this article includes any and all combinations of one or more related listed items. Example

[0024] See also Figure 1-4The utility model provides a reagent adding device for purifying absorption liquid of ammonia flue gas desulfurization of boilers, comprising a purification box 1 and a liquid storage box 2 for storing purified liquid, the liquid storage box 2 is fixedly installed on the outside of the purification box 1, a storage chamber 11 and a mixing chamber 12 for storing absorption liquid are provided in the purification box 1, a delivery pipe 21 is installed in the liquid storage box 2, the pipe body of the delivery pipe 21 extends into the purification box 1, a plurality of first nozzles 212 and a plurality of second nozzles 213 are installed on the outside of the delivery pipe 21, the first nozzle 212 is used to spray the purified liquid in the liquid storage box 2, a connecting pipe 22 is installed at the storage chamber 11, the connecting pipe 22 is connected to the second nozzle 213, and the second nozzle 213 is used to spray the storage chamber 11. When the dust content in the absorption liquid of the boiler ammonia flue gas desulfurization absorption liquid reaches more than 20%, the color of the absorption liquid becomes turbid, the absorption liquid is taken out and anionic polyacrylamide flocculant is added, and the dust in the absorption liquid and aqueous solution materials such as ammonium sulfate and ammonium sulfite are gradually stratified and clarified after being stationary, and the absorption liquid and the purified liquid are sprayed simultaneously through the first nozzle 212 and the second nozzle 213. The purified liquid adopts anionic polyacrylamide flocculant, so that the absorption liquid and the purified liquid can be fully mixed, and the dust separation effect of the absorption liquid is improved. The dust and the solution are separated by a filter press, and the desulfurization absorption liquid after filtration is returned to the purification box 1 for use, and the desulfurization absorption liquid maintains normal desulfurization absorption function, so that the recovered absorption liquid can be reused, which effectively reduces the consumption of resources.

[0025] Please pay attention to Figure 2 A first delivery pump 211 is installed on the delivery pipe 21, and the first nozzles 212 are symmetrically and parallelly arranged on both sides of the delivery pipe 21. The nozzles of the first nozzles 212 are oriented toward the inner wall of the purification box 1. This design ensures that the purified liquid can fully cover the spraying range of the agent in the purification box 1, so that the absorption liquid can fully contact with the purified liquid.

[0026] Please pay attention to Figure 2 A second delivery pump 221 is installed on the connecting pipe 22, and the second nozzle 213 is installed on the upper part of the delivery pipe 21. The nozzle of the second nozzle 213 is oriented toward the top wall of the purification box 1. Through this design, the absorption liquid is sprayed upward in the purification box 1, and automatically falls by gravity after spraying. During the falling process, it can fully contact and mix with the purification liquid sprayed in parallel.

[0027] Please pay attention to Figure 2-3A baffle 13 is also installed in the purification box 1. The baffle 13 is located directly below the delivery pipe 21. The absorption liquid and the purification liquid are scattered on the baffle 13 and flow to the bottom of the mixing chamber 12 through the baffle 13. The absorption liquid and the purification liquid are further mixed and contacted during the flow process. The baffle 13 is in an inverted V shape. This design ensures that the absorption liquid and the purification liquid can be fully mixed during the flow process, and avoids the absorption liquid and the purification liquid from accumulating on the baffle 13.

[0028] Please pay attention to Figure 2 A feed pipe 111 is installed at the top of the storage chamber 11, and a discharge pipe 121 is installed at the bottom of the mixing chamber 12. The feed pipe 111 is used to conveniently add absorption liquid into the storage chamber 11, and the discharge pipe 121 is used to conveniently discharge and collect the absorption liquid after mixing.

[0029] Please pay attention to Figure 1-2 The liquid storage tank 2 is provided with a feed port 23, and a dust cover is movably installed on the feed port 23. The purified liquid can be conveniently added into the liquid storage tank 2 through the feed port 23, and the dust cover can prevent the purified liquid from being contaminated. A filter net 231 for filtering impurities is installed in the feed port 23. The purified liquid added into the liquid storage tank 2 is filtered through the filter net 231 to prevent external impurities from being added into the liquid storage tank 2 and causing blockage of the delivery pipe 21.

[0030] The working principle of the first embodiment of the utility model is as follows:

[0031] When in use, the purified liquid is added into the liquid storage tank 2 through the feed port 23, and the absorption liquid is added into the storage chamber 11 through the feed pipe 111, and the first delivery pump 211 is started, and the first delivery pump 211 delivers the purified liquid in the liquid storage tank 2 to the first nozzle 212 for spraying, and the second delivery pump 221 is started, and the second delivery pump 221 delivers the absorption liquid in the storage chamber 11 to the second nozzle 213 through the connecting pipe 22, and the second nozzle 213 sprays the absorption liquid upward, and the sprayed absorption liquid scatters downward due to its own weight. During the scattering process, the purified liquid is fully contacted and fused with the purified liquid sprayed from the first nozzle 212. The absorption liquid mixed with the purified liquid flows to the top of the baffle 13, thereby further merging the purified liquid. The absorption liquid flows to the bottom of the mixing chamber 12 through the baffle 13. The purified liquid is an anionic polyacrylamide flocculant. The ammonium sulfate and dust in the absorption liquid after adding the purified liquid are separated. The treated absorption liquid maintains normal desulfurization absorption function. The absorption liquid is returned to the desulfurization system for use, so that the recovered absorption liquid can be reused, which greatly reduces the consumption of resources.

[0032] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A reagent adding device for purifying the absorption liquid of boiler ammonia flue gas desulfurization, characterized in that: The invention comprises a purification box (1) and a liquid storage box (2) for storing purification liquid, wherein the liquid storage box (2) is fixedly mounted on the outside of the purification box (1), and a storage chamber (11) and a mixing chamber (12) for storing absorption liquid are provided in the purification box (1). A delivery pipe (21) is installed in the liquid storage box (2), and the pipe body of the delivery pipe (21) extends into the purification box (1). A plurality of first spray heads (212) and a plurality of second spray heads (213) are installed on the outside of the delivery pipe (21), and the first spray heads (212) are used to spray the purification liquid in the liquid storage box (2). A connecting pipe (22) is installed at the storage chamber (11), and the connecting pipe (22) is connected to the second spray head (213), and the second spray head (213) is used to spray the absorption liquid in the storage chamber (11).

2. The reagent adding device for purifying the absorption liquid of boiler ammonia flue gas desulfurization according to claim 1 is characterized in that: A first delivery pump (211) is installed on the delivery pipe (21), and the first nozzles (212) are symmetrically arranged in parallel on both sides of the delivery pipe (21), with the nozzles of the first nozzles (212) facing the inner wall of the purification box (1).

3. The reagent adding device for purifying the absorption liquid of boiler ammonia flue gas desulfurization according to claim 2 is characterized in that: A second delivery pump (221) is installed on the connecting pipe (22), and the second nozzle (213) is installed on the upper part of the delivery pipe (21), with the nozzle of the second nozzle (213) facing the top wall of the purification box (1).

4. The reagent adding device for purifying the absorption liquid of boiler ammonia flue gas desulfurization according to claim 3 is characterized in that: A baffle (13) is also installed in the purification box (1), and the baffle (13) is located directly below the delivery pipe (21).

5. The reagent adding device for purifying the absorption liquid of boiler ammonia flue gas desulfurization according to claim 4 is characterized in that: The baffle (13) is in an inverted V shape.

6. The reagent adding device for purifying the absorption liquid of boiler ammonia flue gas desulfurization according to claim 1 is characterized in that: A feed pipe (111) is installed at the upper portion of the storage chamber (11), and a discharge pipe (121) is installed at the bottom of the mixing chamber (12).

7. The reagent adding device for purifying the absorption liquid of boiler ammonia flue gas desulfurization according to claim 1 is characterized by: The liquid storage box (2) is provided with a feed inlet (23), and a dust cover is movably mounted on the feed inlet (23).

8. The reagent adding device for purifying the absorption liquid of boiler ammonia flue gas desulfurization according to claim 7 is characterized in that: A filter screen (231) for filtering impurities is installed in the feed port (23).

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