Waste gas circulating device of flue gas desulfurization ammonia water evaporator

Abstract

The utility model provides a waste gas circulating device of a flue gas desulfurization ammonia water evaporator, which comprises a circulator, an ammonia water inlet and an ammonia gas outlet are arranged on the upper side of the circulator, and circulating mechanisms for flue waste gas circulation are arranged at the left end and the right end of the circulator. The ammonia water mixing device comprises a circulator, a stirring mechanism used for increasing the mixing degree of ammonia water is arranged in the circulator, the stirring mechanism comprises an auxiliary gear, a fixing rod is fixedly connected to the right side surface of the auxiliary gear, and stirring blades are arranged on the fixing rod. The auxiliary gear is used for driving the fixing rod and the stirring blades to rotate so that ammonia water in the circulator can be raised, then the ammonia water falls on the surfaces of the heat conduction pipe and the heat conduction fins under the action of gravity, the raised ammonia water can make better contact with the surface of the heat conduction pipe to form a uniform liquid film, local high-concentration and low-concentration areas are prevented from being formed, and then the heat exchange effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the flue gas desulfurization technical field, especially relates to a kind of waste gas circulating device of flue gas desulfurization ammonia water evaporator. BACKGROUND

[0002] The waste gas circulating device of flue gas desulfurization ammonia water evaporator is a key equipment for industrial waste gas treatment, mainly used for removing harmful gases such as sulfur dioxide (SO2) in flue gas, mainly used for removing acidic pollutants such as sulfur dioxide (SO2) in flue gas, and its working principle is to use ammonia water (NH3·H2O) as absorbent, convert SO2 into ammonium sulfate ((NH4)2SO4) or ammonium sulfite ((NH4)2SO3) by evaporation and chemical reaction, so as to realize efficient desulfurization, however, in the practical application of waste gas circulating device, the waste gas circulating device without stirring mechanism has significant shortcomings, due to the lack of stirring function, the distribution of ammonia water is uneven, part of the heat pipe may be surrounded by high-concentration ammonia water, while the heat pipes in other areas cannot fully contact with ammonia water, which leads to uneven heat exchange and reduces the heat exchange efficiency, therefore, we hope to design a kind of waste gas circulating device of flue gas desulfurization ammonia water evaporator, so as to solve this problem. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a kind of waste gas circulating device of flue gas desulfurization ammonia water evaporator, to solve the problems raised in the above background.

[0004] The utility model realizes the following technical scheme: a kind of waste gas circulating device of flue gas desulfurization ammonia water evaporator, comprising: circulator, the upper side of the circulator is provided with ammonia water inlet and ammonia gas outlet, the left and right ends of the circulator are provided with circulating mechanism for flue gas circulation, the inside of the circulator is provided with stirring mechanism for increasing the mixing degree of ammonia water;

[0005] The stirring mechanism includes a pinion, the right side surface of the pinion is fixedly connected with a fixed rod, and the fixed rod is provided with stirring blades;

[0006] The left side surface of the circulator is fixedly installed with a speed reducer, the output shaft of the speed reducer is connected with a main gear through a shaft sleeve, and the main gear is engaged with the pinion, by setting the stirring mechanism, ammonia water is lifted, the lifted ammonia water can better contact with the surface of heat pipe, form uniform liquid film, and then improve heat exchange effect.

[0007] As a preferred embodiment, the right side cross section of the circulator is an arc structure which is wide at the top and narrow at the bottom.

[0008] As a preferred implementation form, the stirring mechanism further comprises two connecting sleeves fixedly sleeved on the left and right ends of the circulating device, and a heat-conducting pipe is fixedly sleeved in each of the two connecting sleeves, and a heat-conducting fin is fixedly sleeved on the outer side of the heat-conducting pipe.

[0009] As a preferred implementation form, the heat-conducting pipe and the heat-conducting fin are both made of copper.

[0010] As a preferred implementation form, the outer side of the right end connecting sleeve of the circulating device is sleeved with a connecting disc through a bearing, the left end connecting sleeve of the circulating device is sleeved in the inner side of the pinion through a bearing, and the left side surface of the connecting disc is fixedly connected with the fixed rod.

[0011] As a preferred implementation form, the circulating mechanism comprises two supporting pipes, and one end of each of the two supporting pipes is fixedly connected with the left and right side surfaces of the circulating device.

[0012] The other end of each of the two supporting pipes is fixedly connected with a connecting flange I, and the inner side of each of the two supporting pipes is provided with a circulating fan for forming negative pressure in the circulating device and a filter screen for filtering waste gas, so that the waste heat of the flue gas can be used as a circulating heat source to effectively reduce energy consumption and reduce dependence on external energy.

[0013] As a preferred implementation form, the circulating mechanism further comprises an air inlet pipe and an air outlet pipe, and the two ends of each of the air inlet pipe and the air outlet pipe are fixedly connected with a connecting flange II, and the two connecting flanges I are attached to the two connecting flanges II and fixedly connected through screws.

[0014] As a preferred implementation form, the air inlet pipe and the air outlet pipe are both corrugated and made of stainless steel.

[0015] After the above technical scheme is adopted, the beneficial effects of the present application are as follows:

[0016] By arranging the stirring mechanism, the fixed rod and the stirring blade are driven to rotate by the pinion, so that the ammonia water in the circulating device is lifted, and then falls on the surface of the heat-conducting pipe and the heat-conducting fin by gravity. The lifted ammonia water can better contact the surface of the heat-conducting pipe to form a uniform liquid film, thereby avoiding the formation of local high-concentration and low-concentration areas and improving the heat exchange effect.

[0017] By arranging the circulating mechanism, the waste heat of the flue gas can be used as a circulating heat source to effectively reduce energy consumption and reduce dependence on external energy. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, obviously, the drawings described in the following are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the premise of the drawings.

[0019] Figure 1 It is a front right oblique view of the overall structure of the waste gas circulating device of the flue gas desulfurization ammonia water evaporator.

[0020] Figure 2 It is a sectional view of the gas inlet pipe of the waste gas circulating device of the flue gas desulfurization ammonia water evaporator.

[0021] Figure 3 It is an exploded view of the local structure of the waste gas circulating device of the flue gas desulfurization ammonia water evaporator.

[0022] Figure 4 It is an exploded view of the stirring mechanism of the waste gas circulating device of the flue gas desulfurization ammonia water evaporator.

[0023] In the figure, 1-circulator, 2-ammonia water inlet, 3-ammonia gas outlet, 4-circulating mechanism, 5-stirring mechanism;

[0024] 41-support pipe, 42-connection flange one, 43-gas inlet pipe, 44-connection flange two, 45-circulating fan, 46-filter plate, 47-gas outlet pipe;

[0025] 51-connection sleeve, 52-heat conducting pipe, 53-heat conducting fin, 54-secondary gear, 55-reducer, 56-primary gear, 57-fixing rod, 58-stirring blade. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, obviously, the described embodiments are only some embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0027] Please refer to Figures 1 to 4 The present application provides a technical solution: a waste gas circulating device of a flue gas desulfurization ammonia water evaporator, comprising: a circulator 1, the upper side of the circulator 1 is provided with an ammonia water inlet 2 and an ammonia gas outlet 3, the left and right ends of the circulator 1 are both provided with a circulating mechanism 4 for flue gas circulation, and the inside of the circulator 1 is provided with a stirring mechanism 5 for increasing the mixing degree of ammonia water.

[0028] The stirring mechanism 5 comprises a pinion 54, the right surface of the pinion 54 is fixedly connected with a fixed rod 57, and the fixed rod 57 is provided with stirring blades 58;

[0029] The left surface of the circulator 1 is fixedly installed with a speed reducer 55, the output shaft of the speed reducer 55 is connected with a main gear 56 through a shaft sleeve, the main gear 56 is engaged with the pinion 54, and the ammonia water is lifted by the stirring mechanism 5, so that the lifted ammonia water can better contact the surface of the heat conduction pipe 52, form a uniform liquid film, and further improve the heat exchange effect.

[0030] The right side cross section of the circulator 1 is an arc structure which is wide at the top and narrow at the bottom.

[0031] The stirring mechanism 5 further comprises a connecting sleeve 51, the connecting sleeve 51 is fixedly sleeved on the left and right ends of the circulator 1, the inside of the two connecting sleeves 51 is fixedly sleeved with a heat conduction pipe 52, and the outside of the heat conduction pipe 52 is fixedly sleeved with a heat conduction fin 53, and the contact area of the ammonia water and the heat conduction pipe 52 is increased by increasing the heat conduction fin 53.

[0032] The heat conduction pipe 52 and the heat conduction fin 53 are both metal copper structures for improving the heat conduction effect.

[0033] The outside of the right end connecting sleeve 51 of the circulator 1 is sleeved with a connecting disc through a bearing, the left end connecting sleeve 51 of the circulator 1 is sleeved in the inside of the pinion 54 through a bearing, and the left surface of the connecting disc is fixedly connected with the fixed rod 57.

[0034] The circulating mechanism 4 comprises two support pipes 41, one end of the two support pipes 41 is fixedly connected to the left and right surfaces of the circulator 1 respectively;

[0035] The other end of the two support pipes 41 is fixedly connected with a connecting flange one 42, the inside of the support pipe 41 is provided with a circulating fan 45 for forming negative pressure in the inside of the circulator 1 and a filter screen for filtering waste gas, and by arranging the circulating mechanism 4, the waste heat of the flue gas is used as a circulating heat source, so that the energy consumption can be effectively reduced and the dependence on external energy can be reduced.

[0036] The circulating mechanism 4 further comprises an air inlet pipe 43 and an air outlet pipe 48, the two ends of the air inlet pipe 43 and the air outlet pipe 48 are fixedly connected with a connecting flange two 44, and the two connecting flanges one 42 are respectively attached to the two connecting flanges two 44 and fixedly connected through screws.

[0037] The air inlet pipe 43 and the air outlet pipe 48 are both corrugated telescopic structures and are made of stainless steel.

[0038] Please refer to Figure 1 、 Figure 3 、 Figure 4, as the first embodiment of the utility model: in use, start the speed reducer 55, the output shaft of speed reducer 55 drives main gear 56 to rotate through the shaft sleeve, main gear 56 drives the gear 54 engaged with it to rotate in the process of rotating, further gear 54 drives fixed rod 57 and stirring blade 58 to make the ammonia water inside circulator 1 lift, then fall on the surface of heat pipe 52 and heat dissipation fin 53 through the action of gravity, the ammonia water that lifts can better contact with the surface of heat pipe 52, form uniform liquid film, further improve heat exchange effect.

[0039] Please refer to Figure 1 And Figure 2 , as the second embodiment of the utility model: based on the above embodiment, further, in use, first, through the connecting flange two 44 on inlet pipe 43, circulator 1 is connected with external equipment, inlet pipe 43 is a kind of corrugated telescopic structure and is made of stainless steel material, to improve its heat resistance, then start circulating fan 45, so that the inside of circulator 1 forms negative pressure, then waste gas is filtered after passing through filter plate 47 and enters the inside of heat pipe 52 and heats it, finally, the exhaust pipe 48 on the right side of circulator 1 is connected with external equipment to realize the circulation of waste gas, reduce the problem of energy consumption.

[0040] The above only for the preferred embodiment of the utility model, and not to limit the utility model, any modification, equivalent replacement, improvement etc. within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A flue gas desulfurization ammonia liquor evaporator exhaust gas recycling device, comprising: The application discloses a circulating device (1), characterized in that the upper side of the circulating device (1) is provided with an ammonia water inlet (2) and an ammonia gas outlet (3), the left and right ends of the circulating device (1) are both provided with circulating mechanisms (4) for circulating flue gas, and the inside of the circulating device (1) is provided with a stirring mechanism (5) for increasing the mixing degree of ammonia water. The stirring mechanism (5) comprises a secondary gear (54), the right side surface of the secondary gear (54) is fixedly connected with a fixed rod (57), and the fixed rod (57) is provided with stirring blades (58). The left side surface of the circulating device (1) is fixedly installed with a speed reducer (55), the output shaft of the speed reducer (55) is connected with a primary gear (56) through a shaft sleeve, and the primary gear (56) is engaged with the secondary gear (54).

2. A flue gas desulfurization ammonia liquor evaporator exhaust gas recirculation apparatus as set forth in claim 1, characterized by: The right side cross section of the circulating device (1) is in an arc structure which is wide at the top and narrow at the bottom.

3. A flue gas desulfurization ammonia liquor evaporator exhaust gas recirculation apparatus as defined in claim 1, wherein: The stirring mechanism (5) further comprises a connecting sleeve (51), the connecting sleeve (51) is fixedly sleeved on the left and right ends of the circulating device (1), the inside of each connecting sleeve (51) is fixedly sleeved with a heat conduction pipe (52), and the outside of the heat conduction pipe (52) is fixedly sleeved with a heat conduction fin (53).

4. A flue gas desulfurization ammonia liquor evaporator exhaust gas recirculation apparatus as set forth in claim 3 wherein: The heat conduction pipe (52) and the heat conduction fin (53) are both metal copper structures for improving the heat conduction effect.

5. A flue gas desulfurization ammonia liquor evaporator exhaust gas recirculation apparatus as defined in claim 1 wherein: The outside of the right end connecting sleeve (51) of the circulating device (1) is sleeved with a connecting disc through a bearing, the left end connecting sleeve (51) of the circulating device (1) is sleeved in the inside of the secondary gear (54) through a bearing, and the left side surface of the connecting disc is fixedly connected with the fixed rod (57).

6. A flue gas desulfurization ammonia liquor evaporator exhaust gas recirculation apparatus as defined in claim 1 wherein: The circulating mechanism (4) comprises two supporting pipes (41), one end of each supporting pipe (41) is fixedly connected to the left and right side surfaces of the circulating device (1); The other end of each supporting pipe (41) is fixedly connected with a connecting flange one (42), the inside of each supporting pipe (41) is provided with a circulating fan (45) for forming negative pressure in the inside of the circulating device (1) and a filter screen for filtering waste gas.

7. A flue gas desulfurization ammonia liquor evaporator exhaust gas recirculation apparatus as defined in claim 6 wherein: The circulating mechanism (4) further comprises an air inlet pipe (43) and an air outlet pipe (48), the two ends of the air inlet pipe (43) and the air outlet pipe (48) are both fixedly connected with connecting flanges two (44), and the two connecting flanges one (42) are respectively attached to the two connecting flanges two (44) and fixedly connected through screws.

8. A flue gas desulfurization ammonia liquor evaporator exhaust gas recirculation apparatus as defined in claim 7, wherein: The air inlet pipe (43) and the air outlet pipe (48) are both corrugated telescopic structures and are made of stainless steel.

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