CN210448672U - White-removing desulfurizing tower - Google Patents

White-removing desulfurizing tower Download PDF

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Publication number
CN210448672U
CN210448672U CN201920311276.XU CN201920311276U CN210448672U CN 210448672 U CN210448672 U CN 210448672U CN 201920311276 U CN201920311276 U CN 201920311276U CN 210448672 U CN210448672 U CN 210448672U
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flue gas
temperature
working medium
heat exchange
slurry
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CN201920311276.XU
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Inventor
李乔
刘学
王春梅
杨晓云
朱智勇
杨倩
王珠
朱粮
胡国顺
杨金红
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Qinhuangdao Qingqing Environmental Protection Equipment Co ltd
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Qinhuangdao Qingqing Environmental Protection Equipment Co ltd
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Abstract

The utility model discloses a white desulfurization tower that disappears, including desulfurization part, white part disappears, desulfurization part includes flue gas access, thick liquid storage pond, thick liquid shower, flue gas spray tube No. one, and the thick liquid shower sets up the multilayer, and the flue gas spray tube sets up in the thick liquid storage pond, and each group of thick liquid shower is linked together with the thick liquid storage pond and all installs the suction pump on its communicating pipe; the blank removing part comprises a second flue gas passage, a heat exchange device and a pressurizing fan, the second flue gas passage is arranged at the downstream end of the first flue gas passage, the first flue gas passage and the second flue gas passage are arranged in different vertical directions, the heat exchange device is arranged at the middle section of the second flue gas passage, the pressurizing fan is arranged at the position, close to the top, of the second flue gas passage, and the outlet end of the top of the second flue gas passage is of a narrow-mouth structure. The utility model discloses have high-efficient desulfurization and be applicable to the beneficial effect that multiple weather condition disappears white processing.

Description

White-removing desulfurizing tower
Technical Field
The utility model relates to a flue gas desulfurization technical field, specific white desulfurization tower that disappears that says so.
Background
The existing flue gas and tail gas in the industries of electric power, steel, biochemistry and the like are generally treated by desulfurization, denitration and other treatment equipment. Especially, after the ultra-low emission transformation is carried out in the power industry, the control indexes are determined to be 4 indexes of smoke dust, sulfur dioxide, nitrogen oxide, mercury and compounds thereof, and the emission limit values are respectively 10mg/m3、35mg/m3、50mg/m3、0.03mg/m3And the smoke emission limit value required by some regions is 5mg/m 3. The elimination of pollutants has been greatly improved from an environmental standpoint.
At present, sulfur-containing flue gas and tail gas are desulfurized by adopting limestone-gypsum wet process technology. After the wet desulphurization process is adopted, the lower the temperature of the desulphurization slurry is, the better the desulphurization effect is, the water vapor in the desulfurized flue gas is basically in a saturated state and has large moisture content, and in the discharge process, the temperature of the flue gas is reduced in the process of mixing and diffusing with the atmosphere, water in the flue gas is separated out, and white mist, commonly called smoke plume, is formed around a chimney. The discharged flue gas or tail gas has low temperature and large moisture content, and can not be effectively diffused, thus forming contradictions.
In order to ensure the desulfurization efficiency and solve the problem of white smoke plume in the flue gas emission process, a novel efficient desulfurizing tower needs to be provided to eliminate the white smoke plume on the premise of ensuring the standard of the flue gas emission.
In order to save the floor space of equipment, a chimney is directly arranged at the top of the desulfurizing tower, so that the desulfurized flue gas is directly discharged from the chimney at the upper part of the desulfurizing tower, the floor space is effectively saved by the desulfurizing tower, and the problem of white smoke plume in the flue gas discharge process also exists.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a white-eliminating desulfurizing tower which has high-efficiency desulfurization and is suitable for white-eliminating treatment under various climatic conditions.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: a white-eliminating desulfurizing tower comprises a desulfurizing part and a white-eliminating part, wherein the desulfurizing part is arranged at the upstream end of the flow of flue gas of the white-eliminating part, the desulfurizing part comprises a first flue gas passage, a slurry storage tank, slurry spraying pipes and flue gas spraying pipes, the slurry storage tank is arranged at the lowest end of the first flue gas passage, the slurry spraying pipes are provided with multiple layers and are arranged at the upper end of the first flue gas passage, the flue gas spraying pipes are arranged in the slurry storage tank, the nozzles of the flue gas spraying pipes are vertically upwards arranged, each group of the slurry spraying pipes are communicated with the slurry storage tank, the communicating pipes of the slurry spraying pipes are provided with water suction pumps, the flue gas spraying pipes are communicated with the flue gas, and the flue gas spraying pipes are provided with pressure pumps; the white part that disappears includes No. two flue gas passageways, heat transfer device, pressurized fan, No. two flue gas passageways set up in the low reaches end of a flue gas passageway and No. one flue gas passageway sets up different vertical direction with No. two flue gas passageways, heat transfer device installs the middle section of No. two flue gas passageways and heat transfer device's working medium is imported and exported all and is led to No. two flue gas passageways outside, pressurized fan installs No. two flue gas passageways are close to the position at top, No. two flue gas passageway top exit end sets up to the narrow mouth structure.
And the spray opening of the slurry spray pipe is vertically and downwards arranged and is opposite to the liquid level in the slurry storage tank and the spray opening of the flue gas spray pipe.
The temperature of the working medium circulating in the heat exchange device is set according to the outside air temperature and seasons, when the heat exchange device is in winter or in a low-temperature environment, the temperature of the working medium circulating in the heat exchange device is lower than the temperature of the flue gas, and when the heat exchange device is in summer or in a high-temperature environment, the temperature of the working medium circulating in the heat exchange device is higher than the temperature of the flue gas.
The working state of the pressurizing fan judges the on-off state according to the temperature of the working medium circulating in the heat exchange device, when the set temperature of the working medium circulating in the heat exchange device is lower than the smoke temperature, the pressurizing fan is in the off state, and when the set temperature of the working medium circulating in the heat exchange device is higher than the smoke temperature, the pressurizing fan is in the on state.
And a water collecting tank is arranged at the bottom of the second flue gas passage, and the bottom of the water collecting tank is communicated with a drainage pipeline which is communicated with the slurry storage tank.
The utility model has the advantages that: flue gas enters the flue gas spray pipe through the pressure pump, the flue gas spray pipe is arranged in the slurry storage pool, the flue gas is introduced into the flue gas spray pipe to be mixed with the slurry for preliminary desulfurization, and the flue gas after being introduced out of a slurry page is further mixed with the slurry sprayed from the slurry spray pipe for desulfurization, so that the effect of high-efficiency desulfurization is achieved; when the device is in winter or in a low-temperature environment, the temperature of the working medium flowing through the heat exchange device is lower than the temperature of the smoke gas, so that the working medium is removed from the second smoke gas passage, when the device is in summer or in a high-temperature environment, the temperature of the working medium flowing through the heat exchange device is higher than the temperature of the smoke gas, the pressurizing fan is in an open state, the smoke gas still keeps a high flowing speed after flowing out of the second smoke gas passage when being pressurized, and smoke plumes are prevented from being liquefied quickly after flowing out of the second smoke gas passage, so that the device is suitable for white elimination treatment under various climatic season conditions.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the system comprises a first flue gas passage 1, a slurry storage tank 2, a slurry spray pipe 3, a flue gas spray pipe 4, a water suction pump 5, a pressure pump 6, a second flue gas passage 7, a heat exchange device 8, a pressure fan 9, a narrow-mouth structure 10, a water collecting tank 11 and a water drainage pipeline 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, a white-eliminating desulfurizing tower comprises a desulfurizing part and a white-eliminating part, wherein the desulfurizing part is arranged at the upstream end of the flow of flue gas of the white-eliminating part, the desulfurizing part comprises a first flue gas passage 1, a slurry storage tank 2, a slurry spraying pipe 3 and a flue gas spraying pipe 4, the slurry storage tank 2 is arranged at the lowest end of the first flue gas passage 1, the slurry spraying pipes 3 are provided with a plurality of layers and are arranged at the upper end of the first flue gas passage 1, the flue gas spraying pipe 4 is arranged in the slurry storage tank 2, the nozzle of the flue gas spraying pipe is vertically upwards arranged, each group of slurry spraying pipes 3 is communicated with the slurry storage tank 2, a water suction pump 5 is arranged on a communicating pipe of each group of slurry spraying pipes, the flue gas spraying pipes 4 are; the white part that disappears includes No. two flue gas passageways 7, heat transfer device 8, pressurized fan 9, No. two flue gas passageways 7 set up in the downstream end of a flue gas passageway 1 and No. one flue gas passageway 1 sets up different vertical direction with No. two flue gas passageways 7, heat transfer device 8 installs in No. two flue gas passageways 7's middle section and heat transfer device 8's working medium import and export and all lead to No. two flue gas passageways 7 outside, pressurized fan 9 installs the position that is close to the top at No. two flue gas passageways 7, No. two flue gas passageways 7 top exit end sets up to slot structure 10.
In the utility model, the nozzle of the slurry spraying pipe 3 is vertically arranged downwards and is opposite to the liquid level in the slurry storage tank 2 and the nozzle of the flue gas spraying pipe 4, so that the flue gas and the slurry water are mixed, and the flue gas is conveniently desulfurized;
the temperature of the working medium flowing in the heat exchange device 8 is set according to the outside air temperature and seasons, when the heat exchange device is in winter or in a low-temperature environment, the temperature of the working medium flowing in the heat exchange device 8 is lower than the temperature of the flue gas, and because the outside temperature is low, the flue gas carrying a large amount of moisture can be rapidly condensed into small water drops to be scattered at the outlet of the flue gas passage after flowing out of the second flue gas passage 7 to form smoke plume, and water vapor in the hot flue gas is condensed through the heat exchange device 8 to be removed in the second flue gas passage 7; when the smoke generating device is in summer or in a high-temperature environment, the temperature of a working medium flowing in the heat exchange device 8 is higher than the temperature of smoke, due to the fact that the external temperature is high, smoke carrying a large amount of moisture is difficult to condense rapidly after flowing out of the second smoke passage 7 and spreads in the shape of small water drops at an outlet of the smoke passage, water vapor in hot smoke is heated through the heat exchange device 8, and the smoke is prevented from being liquefied rapidly after flowing out of the second smoke passage 7 to form smoke plume;
the working state of the pressurizing fan 9 judges the on-off state according to the temperature of the working medium circulating in the heat exchange device 8, when the set temperature of the working medium circulating in the heat exchange device 8 is lower than the temperature of the flue gas, the pressurizing fan 9 is in the off state, the contact time of the flue gas and the heat exchange device 8 is increased, so that the condensation of the water vapor in the flue gas is completed, when the set temperature of the working medium circulating in the heat exchange device 8 is higher than the temperature of the flue gas, the pressurizing fan 9 is in the on state, when the flue gas is pressurized, the flue gas still keeps a faster flowing speed after passing through the second flue gas channel 7, and the generation of;
the bottom of the second flue gas passage 7 is provided with a water collecting tank 11, the bottom of the water collecting tank 11 is communicated with a water discharging pipeline 12, the water discharging pipeline 12 is communicated with the slurry storage tank 2, water drops formed by water vapor condensed by the heat exchange device 8 fall into the water collecting tank 11, and moisture is returned to the slurry storage tank 2 through the water discharging pipeline 12 to supplement moisture to the slurry.
The utility model discloses a theory of operation is: when the device is used, flue gas enters the flue gas spray pipe 4 through the pressure pump 6, the flue gas spray pipe 4 is arranged in the slurry storage tank 2, the flue gas is introduced into the flue gas spray pipe 4 to be mixed with the slurry for preliminary desulfurization, and the flue gas after being introduced out of the slurry page is further mixed with the slurry sprayed from the slurry spray pipe 3 for desulfurization, so that the effect of high-efficiency desulfurization is achieved;
the flue gas after desulfurization carries a large amount of water vapor in the slurry, when the flue gas is in winter or in a low-temperature environment, the temperature of a working medium flowing in the heat exchange device 8 is lower than the temperature of the flue gas, and because the external temperature is low, the flue gas carrying a large amount of moisture can be rapidly condensed into small water drops after flowing out of the second flue gas passage 7 and is scattered at the outlet of the flue gas passage to form smoke plume, and the water vapor in the hot flue gas is condensed by the heat exchange device 8 so as to be removed in the second flue gas passage 7;
when the device is in summer or in a high-temperature environment, the temperature of a working medium flowing in the heat exchange device 8 is higher than the temperature of smoke, due to the fact that the external temperature is high, smoke carrying a large amount of moisture is difficult to condense rapidly after passing through the second smoke passage 7 and spreads in the shape of small water drops at an outlet of the smoke passage, water vapor in hot smoke is heated through the heat exchange device 8, the pressurizing fan 9 is in an open state, the smoke still keeps a rapid flowing speed after passing through the second smoke passage 7 when being pressurized, rapid liquefaction of the smoke after passing through the second smoke passage 7 to form smoke plumes is avoided, and the device is suitable for whitening treatment under various climatic and seasonal conditions;
because the pressurizing fan 9 is installed at the position, close to the top, of the second flue gas passage 7, the outlet end at the top of the second flue gas passage 7 is provided with the narrow-mouth structure 10, the speed of the flue gas flowing out of the second flue gas passage 7 can be further improved, and the generation of smoke plume is further avoided.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (5)

1. A white-eliminating desulfurizing tower comprises a desulfurizing part and a white-eliminating part, and is characterized in that: the desulfurization part is arranged at the upstream end of the flow of the flue gas of the white elimination part, the desulfurization part comprises a first flue gas passage (1), a slurry storage tank (2), a slurry spray pipe (3) and a flue gas spray pipe (4), the slurry storage tank (2) is arranged at the lowest end of the first flue gas passage (1), the slurry spray pipe (3) is provided with a plurality of layers and is arranged at the upper end of the first flue gas passage (1), the flue gas spray pipe (4) is arranged in the slurry storage tank (2) and is vertically upwards provided with a nozzle, each group of the slurry spray pipes (3) is communicated with the slurry storage tank (2), a water suction pump (5) is arranged on a communicating pipe of each group, the flue gas spray pipe (4) is communicated with the flue gas, and a pressurizing spray pipe (6) is arranged on the flue gas spray pipe (4); the white part that disappears includes No. two flue gas passageways (7), heat transfer device (8), forcing fan (9), No. two flue gas passageways (7) set up the downstream end in a flue gas passageway (1) just No. one flue gas passageway (1) sets up different vertical direction with No. two flue gas passageways (7) on, heat transfer device (8) are installed the middle section of No. two flue gas passageways (7) just the working medium of heat transfer device (8) is imported and exported and is all led to No. two flue gas passageways (7) the outside, forcing fan (9) are installed No. two flue gas passageways (7) are close to the position at top, No. two flue gas passageways (7) exit end sets up to narrow mouthful structure (10).
2. The column according to claim 1, wherein: and the spray opening of the slurry spray pipe (3) is vertically and downwards arranged and is opposite to the liquid level in the slurry storage tank (2) and the spray opening of the flue gas spray pipe (4).
3. The column according to claim 1, wherein: the temperature of the working medium circulating in the heat exchange device (8) is set according to the outside air temperature and seasons, when the working medium is in winter, the temperature of the working medium circulating in the heat exchange device (8) is lower than the temperature of the flue gas, and when the working medium is in summer, the temperature of the working medium circulating in the heat exchange device (8) is higher than the temperature of the flue gas.
4. A column according to claim 1 or 3, wherein: the working state of the pressurizing fan (9) is judged to be switched on and off according to the temperature of the working medium circulating in the heat exchange device (8), the pressurizing fan (9) is in a closed state when the set temperature of the working medium circulating in the heat exchange device (8) is lower than the temperature of flue gas, and the pressurizing fan (9) is in an open state when the set temperature of the working medium circulating in the heat exchange device (8) is higher than the temperature of flue gas.
5. The column according to claim 1, wherein: and a water collecting tank (11) is arranged at the bottom of the second flue gas passage (7), the bottom of the water collecting tank (11) is communicated with a drainage pipeline (12), and the drainage pipeline (12) is communicated with the slurry storage tank (2).
CN201920311276.XU 2019-03-12 2019-03-12 White-removing desulfurizing tower Active CN210448672U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920311276.XU CN210448672U (en) 2019-03-12 2019-03-12 White-removing desulfurizing tower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920311276.XU CN210448672U (en) 2019-03-12 2019-03-12 White-removing desulfurizing tower

Publications (1)

Publication Number Publication Date
CN210448672U true CN210448672U (en) 2020-05-05

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Country Status (1)

Country Link
CN (1) CN210448672U (en)

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