White smoke removing device

Abstract

The utility model discloses a white smoke removing device and relates to the technical field of smoke treatment. Comprising a box body and a backflow gas outlet box fixedly communicated with the upper portion of the box body, a heat exchange box is coaxially fixed in the box body, an inner separation barrel is coaxially fixed to the position, close to a top opening, in the heat exchange box, and flue gas is subjected to dust removal and heat exchange cooling in the inner separation barrel; a hydrochloric acid aqueous solution is arranged in a closed cavity formed between the box body and the heat exchange box, flue gas enters the backflow gas outlet box to be further cooled after being subjected to ammonia removal through the hydrochloric acid aqueous solution, water vapor is condensed and flows back, and then the flue gas is discharged from the top of the backflow gas outlet box. According to the utility model, dust is absorbed through the filter bag and the porous medium in the inner separation cylinder, ammonia gas is absorbed by utilizing a hydrochloric acid aqueous solution, and then the ammonia gas is further cooled through the backflow cavity, so that water vapor is condensed on backflow folds to form water drops and flows back, and the water vapor content in flue gas is reduced; meanwhile, the water absorption sponge is used for further absorbing water, so that the whitening capability of the whole device is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to flue gas treatment technical field, concretely is a flue gas white removing device. BACKGROUND

[0002] In the process of industrial production, flue gas emission becomes a problem that cannot be ignored; the emitted flue gas contains water vapor, dust and small liquid drops and other impurities, although these flue gas is treated by dust removal, desulfurization, denitrification, demisting and other processes, the harmful impurities have reached the current environmental protection standard, but due to the existence of small liquid drops and water vapor, white smoke phenomenon still occurs when the flue gas enters the atmosphere, which not only affects the environmental quality, but also may cause potential threat to human health.

[0003] The conventional flue gas treatment device in the prior art still produces white smoke in the flue gas emission process, and the elimination effect of the white smoke is poor. UTILITY MODEL CONTENT

[0004] The utility model discloses a flue gas white removing device.

[0005] The utility model solves the technical problems of how to reduce the water vapor content and ammonia content of flue gas as much as possible and solve the poor white removing effect of flue gas in the prior art.

[0006] The utility model discloses a flue gas white removing device can be realized through the following technical scheme: a flue gas white removing device, including the box and its upper fixed communication reflux outlet gas tank, the coaxial fixed heat exchange tank in the box, the inner spacer tube is fixed coaxially in the heat exchange tank and is close to the top opening position, and the flue gas carries out dust removal and heat exchange cooling in the inner spacer tube;

[0007] The closed cavity formed between the box and the heat exchange tank is provided with hydrochloric acid aqueous solution, the flue gas is cooled further after entering the reflux outlet gas tank after removing ammonia through the hydrochloric acid aqueous solution, and the water vapor is condensed and refluxed, and then the flue gas is discharged from the top of the reflux outlet gas tank.

[0008] The further technical improvement of the utility model lies in that the cooling pipeline is embedded in the side wall of the inner spacer tube and extends into the heat exchange tank, the temporary storage cavity and the reflux cavity that are isolated from each other are arranged in the reflux outlet gas tank, the cooling water enters the temporary storage cavity and is connected with the water inlet end of the cooling pipeline, and the water inlet end and the water outlet end of the cooling pipeline are arranged at the top of the heat exchange tank.

[0009] The further technical improvement of the utility model lies in that the continuous reflux fold is arranged on the conical inner wall of the top of the reflux cavity, the symmetric inclined surface that gradually reduces in height from the center to the outer edge is arranged at the bottom of the reflux cavity, and the reflux cavity and the box are communicated through the communication pipe fixed between the two.

[0010] The further technical improvement of the utility model lies in that: the inner partition cylinder is internally fixedly provided with a filter bag, the heat exchange box bottom is paved with a certain depth of porous medium, and the inner partition cylinder bottom is extended and embedded in the porous medium.

[0011] The further technical improvement of the utility model lies in that: the porous medium is specifically activated carbon particles.

[0012] The further technical improvement of the utility model lies in that: the top of the reflux cavity is provided with a through hole, a water absorption box is fixedly arranged in the through hole, a water absorption sponge which can be periodically extruded is arranged in the water absorption box, and a plurality of through holes are formed in the bottom of the water absorption box.

[0013] The further technical improvement of the utility model lies in that: an extrusion block is reciprocatingly arranged above the water absorption sponge and slides up and down, two air outlet channels are symmetrically formed in the side wall of the through hole, the bottom of the air outlet channel is below the lower limit position of the extrusion block, and the top of the air outlet channel is above the upper limit position of the extrusion block.

[0014] The further technical improvement of the utility model lies in that: an eccentric disc is rotatably arranged above the extrusion block and driven by a motor, an eccentric groove is arranged on the eccentric disc and is eccentric relative to the rotation center, a connecting rod is vertically fixed to the top of the extrusion block, a roller is rotatably connected to the top of the connecting rod, and the roller is rollingly matched with the eccentric groove.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model firstly absorbs dust through the filter bag and the porous medium in the inner partition cylinder, simultaneously absorbs ammonia gas by using hydrochloric acid solution, then further cools by the reflux cavity, makes water vapor condense into water droplets on the reflux corrugation and reflux, reduces the water vapor content in flue gas, and further absorbs water by using the water absorption sponge, so that the whole device greatly improves the white removal capacity.

[0017] 2. The setting of the cooling pipeline promotes the removal of the whole water vapor and ammonia gas, the cooling water with low temperature firstly cools the flue gas in the reflux cavity in the reflux cooling box, combines the reflux corrugation with large contact area, and the dehumidification effect is remarkable, in addition, the cooling water exchanges heat in the inner partition cylinder and the heat exchange box, reduces the flue gas temperature, simultaneously can maintain or improve the temperature of the hydrochloric acid solution, improves the solubility of ammonium salt, and improves the ammonia removal capacity. DRAWINGS

[0018] In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in combination with the drawings.

[0019] Figure 1 It is the overall device structure sectional view of the utility model;

[0020] Figure 2The utility model discloses Figure 1 Partial close -up at A of middle;

[0021] Figure 3 The eccentric disc and extrusion block driving connection structure schematic view of the utility model.

[0022] In the figure: 1, box body, 2, heat exchange box, 3, inner spacer, 4, filter bag, 5, porous medium, 6, gas guide pipe, 7, hydrochloric acid aqueous solution, 8, cooling pipeline, 9, backflow outlet gas box, 10, communication air pipe, 11, water absorption box, 12, water absorption sponge, 13, extrusion block, 14, connecting rod, 15, eccentric disc, 16, roller, 17, rotating rod, 18, driving motor, 101, liquid inlet, 102, liquid outlet, 801, water inlet end, 802, water outlet end, 803, connecting pipe, 901, temporary storage cavity, 902, backflow cavity, 903, water inlet, 904, outlet gas passage, 9021, backflow fold, 1501, eccentric groove. DETAILED DESCRIPTION

[0023] In order to further illustrate the technical means and effects taken by the utility model to achieve the predetermined utility model purposes, the specific implementation, structure, features and effects according to the utility model are described in detail as follows by combining with the drawings and preferred embodiments.

[0024] Please refer to Figures 1-3 As shown in the figure, a flue gas white removal device, including box body 1, the heat exchange box 2 is fixed coaxially in box body 1, the top of heat exchange box 2 is equipped with inlet opening, the inner spacer 3 is fixed coaxially in heat exchange box 2, the bottom of heat exchange box 2 is paved with a certain depth of porous medium 5, the bottom of inner spacer 3 is buried in porous medium 5,

[0025] Specifically, in the embodiment, the porous medium 5 adopts activated carbon particles.

[0026] The filter bag 4 is fixedly installed at the convergence end of the inlet opening, the filter bag 4 extends to the surface close to the porous medium 5, the space between the heat exchange box 2 and the inner spacer 3 forms the airflow heat exchange passage under the separation of the porous medium 5, the closed cavity is formed between the heat exchange box 2 and the box body 1, the closed cavity is filled with a certain depth of hydrochloric acid aqueous solution 7, the heat exchange box 2 is provided with the gas guide pipe 6 communicated to the liquid level below the hydrochloric acid aqueous solution 7 at the position close to the top of the inner spacer 3, the liquid outlet 102 and the liquid inlet 101 are respectively arranged at the bottom of the box body 1 and the position exceeding the liquid level depth of the hydrochloric acid aqueous solution 7, for updating and replacing the hydrochloric acid aqueous solution 7.

[0027] More, the sidewall of the inner spacer 3 is buried with the cooling pipeline 8, the cooling pipeline 8 extends to the heat exchange box 2 through the connecting pipe 803, the cooling pipeline 8 is communicated and arranged with the water inlet end 801 and the water outlet end 802 of the top of the heat exchange box 2.

[0028] A reflux gas outlet tank 9 is arranged above the box body 1, two communication gas pipes 10 are symmetrically arranged between the box body 1 and the reflux gas outlet tank 9, the two ends of the communication gas pipes 10 are respectively fixed in the box body 1 and the reflux gas outlet tank 9, the reflux gas outlet tank 9 is provided with an annular temporary storage cavity 901 and a conical reflux cavity 902, the top end of the communication gas pipe 10 communicates with the reflux cavity 902, the top of the reflux gas outlet tank 9 is provided with a water inlet 903 for providing cooling water for the temporary storage cavity 901, and the temporary storage cavity 901 is communicated with the water inlet end of the cooling pipe 8 through a hose;

[0029] The reflux gas outlet tank 9 is provided with a through hole at the top of the reflux cavity 902, a water absorption box 11 is fixedly installed in the through hole, a water absorption sponge 12 is arranged in the water absorption box 11, and a squeezing block 13 arranged up and down reciprocatingly is arranged above the water absorption sponge 12; a plurality of through holes are formed in the bottom of the water absorption box 11;

[0030] Two gas outlet channels 904 are symmetrically arranged on the side wall of the through hole, the bottom of the gas outlet channel 904 is below the lower limit position of the squeezing block 13, and the top of the gas outlet channel 904 is above the upper limit position of the squeezing block 13;

[0031] A driving motor 18 is fixedly installed at one side of the top of the reflux gas outlet tank 9, an output end of the driving motor 18 is fixedly connected with a rotating rod 17 rotatingly arranged above the through hole, an eccentric disc 15 is coaxially fixed on the outer periphery of the rotating rod 17, an eccentric groove 1501 eccentrically arranged with respect to the rotating center is arranged on the eccentric disc 15, a connecting rod 14 is vertically fixed on the top of the squeezing block 13, a roller 16 is rotatably connected to the top of the connecting rod 14, and the roller 16 is in rolling connection with the eccentric groove 15.

[0032] In use, high-temperature flue gas enters from the gas inlet opening at the top of the heat exchange tank 2, is filtered by the filter bag 4, and is further adsorbed by dust and water in the porous medium 5, enters the airflow heat exchange channel, and enters the hydrochloric acid solution 7 through the gas guide pipe 6 to further absorb ammonia gas therein, forms ammonium salt, and then enters the reflux cavity 902 from the communication gas pipe 10, is cooled and contacted with the reflux folds 9021, and is discharged through the water absorption sponge 12 and the gas outlet channel 904;

[0033] During the whole process, the cooling water enters into the temporary storage cavity 901 from the water inlet 903, then enters into the cooling pipeline 8 from the water inlet end 801, firstly exchanges heat with the high-temperature flue gas in the inner sleeve 8, then the cooling water after being heated by the heat exchange enters into the side wall of the heat exchange box 2, exchanges heat with the hydrochloric acid aqueous solution 7 to a certain extent, thereby improving the solubility of the ammonium salt, and finally is discharged from the water outlet end 802;

[0034] The cooling water in the temporary storage cavity 901 has not been heated, and the water temperature is the lowest, so that the water vapor in the gas is cooled under the condition that the contact area is increased by the backflow corrugation 9021, the condensed water drops drop to the bottom of the backflow cavity 902 and flows back to the box body 1, and finally the water absorption sponge 12 further absorbs water, when the water content of the water absorption sponge 12 reaches a certain degree, the driving motor 18 is started to drive the eccentric disc 15 to rotate, so that the extrusion block 13 extrudes the water absorption sponge 12 to drain water, and the water absorption capacity of the water absorption sponge 12 is maintained; at the same time, the hydrochloric acid aqueous solution 7 is updated in a certain period through the liquid inlet 101 and the liquid outlet 102.

[0035] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the technical solution of the present application, and any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. A fume whitening removal device, characterized in that, The application relates to a flue gas treatment device, which comprises a box (1) and a reflux gas outlet box (9) fixedly communicated above the box (1), a heat exchange box (2) is coaxially fixed in the box (1), an inner partition cylinder (3) is coaxially fixed in the heat exchange box (2) and close to an opening position at the top, and flue gas is subjected to dust removal and heat exchange cooling in the inner partition cylinder (3). A closed cavity formed between the box (1) and the heat exchange box (2) is provided with hydrochloric acid water solution (7), flue gas is subjected to ammonia removal by the hydrochloric acid water solution (7) and then enters the reflux gas outlet box (9) for further cooling, so that water vapor is condensed and refluxed, and then the flue gas is discharged from the top of the reflux gas outlet box (9).

2. A fume scrubbing apparatus as claimed in claim 1, wherein Cooling pipelines (8) are embedded in the side wall of the inner partition cylinder (3) and extend into the heat exchange box (2), a temporary storage cavity (901) and a reflux cavity (902) which are isolated from each other are arranged in the reflux gas outlet box (9), cooling water enters the temporary storage cavity (901) and is communicated with the water inlet end (801) of the cooling pipeline (8), and the water inlet end (801) and the water outlet end (802) of the cooling pipeline (8) are both arranged at the top of the heat exchange box (2).

3. A fume scrubbing apparatus according to claim 2, wherein A continuous reflux fold (9021) is arranged on the conical inner wall at the top of the reflux cavity (902), and a symmetrical inclined surface which gradually decreases in height from the center to the outer edge is arranged at the bottom of the reflux cavity (902), and the reflux cavity (902) is communicated with the inside of the box (1) through a communication pipe (10) fixed between the two.

4. A fume scrubbing apparatus as claimed in claim 1, wherein A filter bag (4) is fixedly arranged in the inner partition cylinder (3), a porous medium (5) with a certain depth is arranged at the bottom of the heat exchange box (2), and the bottom of the inner partition cylinder (3) extends and is embedded in the porous medium (5).

5. A fume scrubbing apparatus according to claim 4, wherein The porous medium (5) is specifically active carbon particles.

6. A fume scrubbing apparatus according to claim 2, wherein A through hole is formed at the top of the reflux cavity (902), a water absorption box (11) is fixedly arranged in the through hole, a water absorption sponge (12) which can be periodically extruded is arranged in the water absorption box (11), and a plurality of through holes are formed in the bottom of the water absorption box (11).

7. A fume scrubbing apparatus according to claim 6, wherein An extrusion block (13) is reciprocatingly arranged above the water absorption sponge (12), two air outlet channels (904) are symmetrically formed in the side wall of the through hole, the bottom of the air outlet channel (904) is below the lower limit position of the extrusion block (13), and the top of the air outlet channel (904) is above the upper limit position of the extrusion block (13).

8. A fume scrubbing apparatus according to claim 7, characterised in that An eccentric disc (15) is rotatably arranged above the extrusion block (13) through motor driving, an eccentric groove (1501) which is eccentric relative to the rotation center is arranged on the eccentric disc (15), a connecting rod (14) is vertically fixed to the top of the extrusion block (13), a roller (16) is rotatably connected to the top of the connecting rod (14), and the roller (16) is rollingly matched with the eccentric groove (1501).

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