Hot smoke distributor for rotary atomization waste water drying

Abstract

The utility model discloses a hot smoke distributor for drying rotary atomized waste water, which is structurally characterized in that the lower part of the inner side wall of a volute flue is open, and a primary guide vane is fixed on the bottom surface of the volute flue. And the supporting peripheral plate is vertically fixed on the bottom surface of the volute flue. The connecting cone is a conical barrel with an opening in the lower end, is fixed to the bottom face of the volute flue and is located on the inner side of the supporting peripheral plate. And the upper bearing part is positioned on the inner side wall of the volute flue and is fixed on the top surface of the first-stage guide vane. The atomizer seat is a conical barrel, the upper end of the atomizer seat is connected with the upper bearing, the connecting cone is sleeved on the periphery of the atomizer seat, and the lower end of the atomizer seat penetrates out of a lower port of the connecting cone and extends below the connecting cone. And the secondary guide vane is fixed on the outer wall of the atomizer seat. The inner flue conical ring is sleeved on the atomizer seat and is positioned at the lower part of the second-stage guide vane; and the third-stage guide vane is fixed on the outer wall of the inner flue conical ring at intervals. The hot smoke distributor can better improve the distribution uniformity of smoke and the full mixing degree of the smoke and atomized waste water.

Description

TECHNICAL FIELD

[0001] The utility model relates to hot smoke distributor technical field, concretely relates to a kind of hot smoke distributor for rotary atomization wastewater drying. BACKGROUND

[0002] Fossil fuel can produce a large amount of pollutants in combustion process, and sulfur element in fuel can be converted into SO2, SO3 and other flue gas into the atmosphere, which is the main source of acid rain. At present, domestic power plants mainly use desulfurization system to solve the problem of sulfur in flue gas. Flue gas wet desulfurization (limestone / gypsum method) is the main form currently used, and a certain amount of desulfurization wastewater is generated in wet desulfurization. When the desulfurization wastewater is sent to the high-speed rotating atomization disc, the liquid is stretched into a film or pulled into a filament due to the centrifugal force, and broken and dispersed into droplets at the edge of the atomization disc. A part of the flue gas is introduced from the front of the denitration outlet air preheater, enters the spray drying tower, and fully contacts with the fine wastewater droplets atomized by the atomizer, so that the water in the droplets is rapidly volatilized, and the salts in the wastewater are dried and separated out, mixed with the dust in the original flue gas, and collected by the subsequent dust collector, so as to achieve the purpose of zero discharge of desulfurization wastewater.

[0003] The hot smoke distributor is an important component of the desulfurization wastewater zero discharge system. The flue gas enters the drying tower in a spiral downward state from the top center of the drying tower through the hot smoke distributor, and the effective mixing between the atomized liquid and the drying gas avoids the condensation of water on the absorption tower wall. The hot smoke distributor is arranged at the inlet of hot flue gas, so that the gas-liquid mixing is sufficient and uniform, which is beneficial to realize long-term stable operation and ensure that the outlet gas temperature is close to the required temperature. However, there are problems such as uneven distribution of flue gas into the tower, insufficient mixing with atomized wastewater, and inconvenient maintenance in the use of the current hot smoke distributor. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a kind of hot smoke distributor for rotary atomization wastewater drying, which can better improve the uniformity of flue gas distribution and the degree of sufficient mixing with atomized wastewater, and reduce the difficulty of maintenance.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A hot flue gas distributor for rotary atomized wastewater drying includes a volute flue, primary guide vanes, a supporting outer plate, a connecting cone, an upper load-bearing structure, an atomizer seat, secondary guide vanes, an inner flue conical ring, and tertiary guide vanes; wherein, the lower part of the inner wall of the volute flue is open, and several arc-shaped primary guide vanes are arranged at intervals and in the same direction, fixed on the bottom surface of the volute flue, dividing the opening into several arc-shaped air inlets; the supporting outer plate is vertically fixed on the bottom surface of the volute flue, providing support; the connecting cone is a conical cylinder with an open lower end, fixed on the bottom surface of the volute flue and located inside the supporting outer plate; the upper load-bearing structure is located on the inner wall of the volute flue. The atomizer is fixed on the top surface of the first-stage guide vane; the atomizer seat is a conical cylinder, the upper end of which is connected to the upper load-bearing structure; the connecting cone is sleeved around the atomizer seat, and the lower end of the atomizer seat extends below the lower port of the connecting cone; there is a gap between the connecting cone and the atomizer seat to allow for smoke flow; several secondary guide vanes are fixed to the outer wall of the atomizer seat in an oblique and spaced manner, and the secondary guide vanes are located below the first-stage guide vanes; the inner flue conical ring is sleeved on the atomizer seat and located below the secondary guide vanes; several tertiary guide vanes are fixed to the outer wall of the inner flue conical ring at intervals, and the tertiary guide vanes are located below the lower port of the connecting cone; the channels between adjacent tertiary guide vanes are arranged vertically.

[0006] Furthermore, a rotating atomizer is connected to the lower end face of the atomizer holder.

[0007] Furthermore, a ring plate is fixed to the lower end face of the connecting cone for fixed connection with the top surface of the drying tower.

[0008] Furthermore, a flange is fixed to the outer wall of the upper port of the atomizer seat, which is supported on the upper load-bearing surface and the two are fixedly connected.

[0009] Furthermore, a rubber sealing strip is provided between the flange and the upper load-bearing structure.

[0010] Furthermore, a lifting lug is fixed on the inner side wall of the upper port of the atomizer seat.

[0011] Furthermore, the inner wall of the atomizer base has a step ladder, which extends from the lower end to the upper end of the inner wall of the atomizer base.

[0012] Furthermore, the interior of the upper load-bearing structure and the interior of the atomizer seat are both filled with heat-insulating cotton to reduce the loss of heat from the smoke.

[0013] Further, the outer wall of the atomizer seat has a hole-plate fixedly connected with the hole-plate of the top end of the inner flue conical ring through a bolt assembly.

[0014] Further, a plurality of support members are fixedly arranged on the outer wall of the volute flue along the circumference thereof, so as to support the volute flue on the top of the drying tower and improve the stability.

[0015] Beneficial effects: compared with the prior art, the hot smoke distributor for rotary atomized wastewater drying can make the desulfurization flue gas enter the gap between the connecting cone and the atomizer seat after passing through the volute flue and forming an outlet cyclone between the arc-shaped first guide vanes, realize the first distribution of the flue gas, and then realize the second distribution of the flue gas through the gap between the second guide vanes, and finally realize the third distribution through the gap between the third guide vanes and then enter the desulfurization tower. Through the above-mentioned multiple distributions, the flue gas entering the desulfurization tower can be more dispersed and uniform, and meanwhile, the flue gas cyclone intensity is increased, and the mixing effect of the flue gas and the atomized wastewater in the desulfurization tower is enhanced. In addition, the passages between the third guide vanes are vertically arranged, so that the flue gas passes through the passages and is directed towards the rotary atomizer on the lower end surface of the atomizer seat, and the flue gas can volatilize the wastewater droplets quickly. Meanwhile, the lifting lugs and the step ladder arranged on the atomizer seat facilitate the overall lifting and manual maintenance of the device. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective structural schematic view of an embodiment of the utility model.

[0017] Figure 2 It is a sectional view of an embodiment of the utility model.

[0018] Figure 3 It is a top view of an embodiment of the utility model.

[0019] Figure 4 It is a top view of the first guide vane in the embodiment of the utility model.

[0020] Figure 5 It is a structural schematic view of the second guide vane in the embodiment of the utility model.

[0021] Figure 6 It is a top view of the third guide vane in the embodiment of the utility model.

[0022] Figure 7 It is a connection schematic view of the atomizer seat and the inner flue conical ring in the embodiment of the utility model.

[0023] In the figure: 1 - volute flue, 2 - first guide vane, 3 - support peripheral plate, 4 - connecting cone, 5 - upper bearing, 6 - atomizer seat, 7 - second guide vane, 8 - inner flue conical ring, 9 - third guide vane, 10 - annular plate, 11 - lug, 12 - step ladder, 13 - perforated ear plate, 14 - support. DETAILED DESCRIPTION

[0024] The technical scheme of the utility model will be further explained in connection with the drawings and examples in the specification.

[0025] Reference Figures 1 to 6 The hot smoke distributor for rotary atomization wastewater drying in the embodiment comprises a volute flue 1, a first guide vane 2, a support peripheral plate 3, a connecting cone 4, an upper bearing 5, an atomizer seat 6, a second guide vane 7, an inner flue conical ring 8 and a third guide vane 9.

[0026] Reference Figure 1 And Figure 4 The volute flue 1 is horizontally arranged, and its right end is an air inlet for the entry of the smoke to be treated. The inner side wall of the volute flue 1 is open at the lower part, and a plurality of arc-shaped first guide vanes 2 are fixedly arranged on the bottom surface of the volute flue 1 in a spaced and same-directional arrangement mode and divide the opening into a plurality of arc-shaped air inlets, so as to facilitate the smoke to form a rotational flow and realize the first distribution of the smoke.

[0027] The support peripheral plate 3 is vertically fixed on the bottom surface of the volute flue 1 to support the hot smoke distributor as a whole and support the hot smoke distributor on the top of the desulfurization tower. The connecting cone 4 is a conical cylinder with an open lower end, and its upper end is fixedly connected to the bottom surface of the volute flue 1 and located inside the support peripheral plate 3. In use, the lower end of the connecting cone 4 is sealingly connected to the mounting opening on the top surface of the desulfurization tower, so that the smoke after uniform distribution can enter the interior of the desulfurization tower.

[0028] The upper bearing 5 is annular and located at the inner side wall of the volute flue 1 and fixed on the top surface of the first guide vane 2. The main function of the upper bearing 5 is to mount and fix the atomizer seat 6. The atomizer seat 6 is a conical cylinder, and a flange is fixed on the outer wall of the upper end of the atomizer seat 6. The upper surface of the upper bearing 5 is provided with a hook head wedge, which is buckled with the flange and fixedly connected together through bolts. The connecting cone 4 is sleeved on the periphery of the atomizer seat 6, and the atomizer seat 6 extends downward after the lower end of the atomizer seat 6 passes through the lower opening of the connecting cone 4.

[0029] Reference Figure 1 And Figure 5, the connecting cone 4 and the atomizer seat 6 have a gap, several pieces of the secondary guide vanes 7 are fixed on the outer wall of the atomizer seat 6 in a way of oblique and interval, and the secondary guide vanes 7 are located at the lower part of the primary guide vanes 2. The first distributed flue gas continues to pass through the gap between the secondary guide vanes 7 to realize the second distribution of the flue gas.

[0030] Referring to Figure 1 and Figure 6 , the inner flue cone ring 8 is sleeved on the atomizer seat 6 and fixedly connected, the inner flue cone ring 8 is located at the lower part of the secondary guide vanes 7, several pieces of the tertiary guide vanes 9 are fixed on the outer wall of the inner flue cone ring 8 in an interval, and the tertiary guide vanes 9 are located at the lower part of the lower end of the connecting cone 4, and the passages between the adjacent tertiary guide vanes 9 are vertically arranged. The flue gas after the second distribution is divided into two parts, and the part of the flue gas close to the outside directly enters the desulfurization tower to increase the rotational flow intensity of the flue gas and enhance the mixing effect of the flue gas and the atomized wastewater in the desulfurization tower. The part of the flue gas close to the inside flows along the outer wall of the inner flue cone ring to the rotating atomizer on the lower end face of the atomizer seat 6. The rotating atomizer atomizes the desulfurization wastewater into fine droplets, and through sufficient contact with the flue gas, the water in the droplets is rapidly volatilized, and the salts in the wastewater are dried and separated out, mixed into the dust in the original flue gas, and collected by the subsequent dust collector, so as to achieve the purpose of zero discharge of desulfurization wastewater.

[0031] In a more specific embodiment, referring to Figure 2 , the lower end face of the connecting cone 4 of the hot flue gas distributor for rotating atomization of wastewater drying is fixed with a ring-shaped plate 10 for fixed connection with the top face of the drying tower, so as to enhance the installation stability of the hot flue gas distributor.

[0032] In a more specific embodiment, the flange of the hot flue gas distributor for rotating atomization of wastewater drying and the upper support 5 have a rubber sealing strip therebetween, so as to increase the friction therebetween and improve the connection stability.

[0033] In a more specific embodiment, referring to Figure 2 , Figure 3 and Figure 4 , the inner side wall of the upper end of the atomizer seat 6 of the hot flue gas distributor for rotating atomization of wastewater drying is fixed with a lifting lug 11, so as to hoist the disassembled hot flue gas distributor. A step ladder 12 can also be fixed on the inner side wall of the atomizer seat 6, and the step ladder 12 extends from the low end to the top end of the inner side wall of the atomizer seat 6. The lifting lug 11 and the step ladder 12 are arranged to facilitate the overall hoisting of the device and manual maintenance.

[0034] In a more optimal embodiment, the interior of the upper bearing 5 and the interior of the atomizer seat 6 of the hot flue distributor for rotary atomization wastewater drying are filled with thermal insulation cotton, which helps to improve the problem of unsatisfactory drying effect of desulfurized flue gas on wastewater droplets due to heat loss of desulfurized flue gas.

[0035] In a more optimal embodiment, with reference to Figure 2 、 Figure 5 and Figure 7 , the outer wall of the atomizer seat 6 of the hot flue distributor for rotary atomization wastewater drying has a perforated ear plate 13, which is fixedly connected with the perforated ear plate at the top end of the inner flue conical ring 8 through a bolt assembly, so as to facilitate disassembly, replacement and assembly of the inner flue conical ring 8.

[0036] In a more optimal embodiment, with reference to Figure 3 , the outer wall of the volute flue 1 of the hot flue distributor for rotary atomization wastewater drying is fixed with a plurality of supporting members 14 along the circumference thereof, so as to support the volute flue 1 at the top of the drying tower and improve stability.

[0037] Finally, it should be noted that any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included within the protection scope of the present application. Although the specific embodiments of the present application have been described above with reference to the accompanying drawings, the description is not a limitation on the protection scope of the present application, and those skilled in the art should understand that various modifications or variations made on the basis of the technical solutions of the present application without creative labor are still within the protection scope of the present application.

Claims

1. A hot fume distributor for rotary atomized wastewater drying, characterized by: The application relates to a spiral casing flue, a first-stage guide vane, a support peripheral plate, a connecting cone, an upper bearing, an atomizer seat, a second-stage guide vane, an inner flue conical ring and a third-stage guide vane; wherein the inner side wall lower part of the spiral casing flue is open, a plurality of arc-shaped first-stage guide vanes are fixed on the bottom surface of the spiral casing flue in a spaced and same-direction arrangement mode and divide the opening into a plurality of arc-shaped air inlets; the support peripheral plate is vertically fixed on the bottom surface of the spiral casing flue; the connecting cone is an open-topped conical cylinder which is fixed on the bottom surface of the spiral casing flue and located on the inner side of the support peripheral plate; the upper bearing is located on the inner side wall of the spiral casing flue and fixed on the top surface of the first-stage guide vane; the atomizer seat is a conical cylinder, the upper end of which is connected with the upper bearing, the connecting cone is sleeved on the periphery of the atomizer seat and the atomizer seat extends below the lower end port of the connecting cone after the lower end port of the connecting cone penetrates the atomizer seat; the connecting cone and the atomizer seat have a gap; a plurality of second-stage guide vanes are fixed on the outer wall of the atomizer seat in a diagonal and spaced arrangement mode and the second-stage guide vanes are located below the first-stage guide vanes; the inner flue conical ring is sleeved on the atomizer seat and located below the second-stage guide vanes; a plurality of third-stage guide vanes are fixed on the outer wall of the inner flue conical ring in a spaced arrangement mode and the third-stage guide vanes are located below the lower end port of the connecting cone; the channels between the adjacent third-stage guide vanes are vertically arranged.

2. The hot fume distributor for the rotary atomized wastewater drying according to claim 1, characterized in that: A rotary atomizer is connected to the lower end surface of the atomizer seat.

3. The hot fume distributor for the rotary atomized wastewater drying according to claim 1, characterized in that: A ring-shaped plate is fixed on the lower end surface of the connecting cone.

4. The hot fume distributor for the rotary atomized wastewater drying according to claim 1, characterized in that: A flange is fixed on the outer wall of the upper end port of the atomizer seat, supported on the upper surface of the upper bearing and fixedly connected with the upper bearing.

5. The hot fume distributor for the rotary atomized wastewater drying according to claim 4, characterized in that: A rubber sealing strip is arranged between the flange and the upper bearing.

6. The hot fume distributor for the rotary atomized wastewater drying according to claim 1, characterized by: A lifting lug is fixed on the inner side wall of the upper end port of the atomizer seat.

7. The hot fume distributor for the rotary atomized wastewater drying according to claim 1, characterized by: A stepped ladder is arranged on the inner side wall of the atomizer seat and extends from the low end to the top end of the inner side wall of the atomizer seat.

8. The hot fume distributor for the rotary atomized wastewater drying according to claim 1, characterized by: The interiors of the upper bearing and the atomizer seat are filled with heat insulation cotton.

9. Hot fume distributor for the drying of atomized wastewater by rotation, according to any of claims 1-8, characterized in that: A hole-ear plate is arranged on the outer wall of the atomizer seat and fixedly connected with the hole-ear plate on the top end of the inner flue conical ring through a bolt assembly.

10. The hot fume distributor for the rotary atomized wastewater drying according to any of claims 1-8, characterized in that: A plurality of support members are fixed on the outer wall of the spiral casing flue along the circumferential direction.

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