Furnace gas recovery device for soda ash production calcining furnace

Abstract

The utility model relates to the technical field of sodium carbonate production, in particular to a furnace gas recovery device for a sodium carbonate production calcining furnace, which comprises a cyclone separator, the bottom of the cyclone separator is fixedly connected and communicated with a washing barrel, and the surface of the washing barrel is fixedly connected and communicated with a blow-off pipe; the guide hopper can gather falling alkali dust together, and meanwhile, the infusion pump is matched with the spray pipe and the guide plate to spirally guide multiple water flows to uniformly flow through the inner side of the guide hopper, so that the alkali dust adhered to the inner side of the guide hopper can be taken away, the probability that the alkali dust is accumulated and detained in the washing barrel is reduced, and the follow-up maintenance and cleaning burden of workers is reduced. The spiral water flow impacts each other at the lower opening of the guide hopper, so that the alkali dust accumulated together can be dispersed, the alkali dust is more thoroughly dispersed in the water, and the probability of retention or accumulation of the alkali dust in the washing barrel is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of soda ash production, in particular to a gas recovery device for a calcining furnace in soda ash production. Background Art

[0002] Calcination of soda ash is an important step in the production process of soda ash, which mainly involves the process of decomposing sodium bicarbonate at high temperature to generate soda ash. At present, calcination of soda ash is usually carried out in a calcination furnace.

[0003] The Chinese patent discloses an improved gas outlet pipe device for heavy soda ash calcining furnace (authorization announcement number is CN205115069U). The improved gas outlet pipe structure of the utility model can clean the alkali dust in the gas almost completely after the gas passes through the water collecting tank, which is consistent with the original process requirements. Due to the shortening of the gas outlet pipe, the probability of alkali dust forming scars in the pipe is greatly reduced, and the cleaning workload is greatly reduced. The labor intensity of the operator is reduced and the stable operation cycle of the equipment is extended.

[0004] Since the above-mentioned device separates the alkali dust in the furnace gas by means of cyclone dust removal, and adopts a water washing spray device to directly clean the fallen alkali dust, it is necessary to set the alkali dust and the water washing spray device on the same vertical plane. However, the fallen alkali dust will also fall on the water washing spray device, and it is easy to accumulate and form scars over time, and the staff still needs regular maintenance and cleaning.

[0005] Therefore, a gas recovery device for a calcining furnace in the production of soda ash is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a gas recovery device for a soda ash production calcining furnace in order to solve the above-mentioned problem, thereby improving the problem that the existing gas recovery device for a soda ash production calcining furnace is easy to accumulate and form scars, and the maintenance burden on the staff is heavy.

[0007] The utility model achieves the above-mentioned purpose through the following technical scheme, a gas recovery device for a soda ash production calcining furnace, comprising: a cyclone separator, the bottom of which is fixedly connected and communicated with a washing bucket, the surface of which is fixedly connected and communicated with a sewage pipe; a washing device, which is installed on the surface of the washing bucket, and one end of which penetrates into the interior of the washing bucket;

[0008] Preferably, the washing device includes a guide bucket and an infusion pump, the guide bucket is fixedly connected to the inside of the washing barrel, the infusion pump is installed on the surface of the washing barrel, the liquid outlet end of the infusion pump is fixedly connected and connected with a nozzle, the liquid outlet end of the nozzle penetrates into the inside of the washing barrel, the liquid outlet end of the nozzle faces the guide bucket, the liquid outlet end of the nozzle is staggered with the connection point between the cyclone separator and the washing barrel, the guide bucket can gather the falling alkali dust together, and at the same time, the infusion pump cooperates with the nozzle and the guide plate to spirally guide multiple streams of water to flow evenly through the inner side of the guide bucket, which can take away the alkali dust adhering to the inner side of the guide bucket, so as to reduce the probability of alkali dust accumulation and retention in the washing barrel, so as to reduce the subsequent maintenance and cleaning burden of the staff, and the spiral water flows impact each other at the lower opening of the guide bucket, which can disperse the accumulated alkali dust, so that the alkali dust is more thoroughly dispersed in the water, further reducing the probability of alkali dust retention or accumulation in the washing barrel.

[0009] Preferably, the vertical cross-section of the inner side of the guide bucket is in the shape of an isosceles trapezoid, and the upper opening of the guide bucket is larger than the lower opening of the guide bucket, which can converge the water flow to the middle to increase the mutual impact force of the water flow.

[0010] Preferably, the washing device also includes a guide plate, which is fixedly connected to the inside of the washing barrel, and the guide plate is arranged between the nozzle and the guide bucket. The liquid outlet end of the nozzle faces the guide plate, and the guide plate is spiral in shape, which can improve the flow path of water along the guide bucket, thereby improving the cleaning rate of alkaline dust inside the guide bucket.

[0011] Preferably, the number of the spray pipes is not less than two, and the spray pipes are distributed in a ring shape around the axis of the washing tub on the inner top wall of the washing tub, which further increases the flow path of the water along the guide bucket.

[0012] Preferably, the liquid outlet end of the infusion pump is fixedly connected and communicated with a liquid diverter, and the liquid inlet end of the nozzle is fixedly connected and communicated with the liquid outlet end of the liquid diverter, which can make the water flow inside the multiple nozzles more uniform to ensure that each water flow can clean the alkaline dust.

[0013] Preferably, the number of the spray pipes and the guide plates is the same, and the guide plates are fixedly connected to the inside of the washing tub in a ring shape around the axis of the washing tub, which can ensure that each water flow can be spirally guided.

[0014] Preferably, the washing device also includes an isolating cylinder fixedly connected to the inner top wall of the washing barrel, the connecting point between the cyclone separator and the washing barrel is connected to the isolating cylinder, the inner diameter of the isolating cylinder is the same as the cross-sectional dimension of the connecting point between the cyclone separator and the washing barrel, and the bottom of the isolating cylinder is arranged on the inner side of the guide bucket, which can prevent the alkaline dust from drifting to the inner top wall of the washing barrel, further reducing the probability of alkaline dust accumulation in the dead corners of the washing barrel.

[0015] The beneficial effects of the utility model are:

[0016] The guide bucket can gather the falling alkali dust together, and the infusion pump, together with the nozzle and the guide plate, can spirally guide multiple streams of water to flow evenly through the inner side of the guide bucket, which can take away the alkali dust adhering to the inner side of the guide bucket, so as to reduce the probability of alkali dust accumulation and retention inside the washing barrel, thereby reducing the subsequent maintenance and cleaning burden of the staff, and the spiral water flows impact each other at the lower opening of the guide bucket, which can disperse the accumulated alkali dust, so that the alkali dust is more thoroughly dispersed in the water, further reducing the probability of alkali dust retention or accumulation inside the washing barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 for Figure 1 Schematic cross-sectional view along the AA direction;

[0019] Figure 3 for Figure 1 A cross-sectional schematic diagram along the BB direction;

[0020] Figure 4 It is a structural schematic diagram of the washing device in the utility model.

[0021] In the figure: 1, cyclone separator; 2, washing bucket; 3, sewage pipe; 4, washing device; 41, guide bucket; 42, infusion pump; 43, spray pipe; 44, guide plate; 45, liquid diverter; 46, isolation cylinder. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] When implementing: Figure 1-4 As shown, a gas recovery device for a soda ash production calcining furnace comprises: a cyclone separator 1, a washing barrel 2 is fixedly connected to the bottom of the cyclone separator 1 and is connected to the bottom of the cyclone separator 1, a sewage pipe 3 is fixedly connected to the surface of the washing barrel 2 and is connected to the surface of the washing barrel 2; a washing device 4 is installed on the surface of the washing barrel 2, and one end of the washing device 4 penetrates into the interior of the washing barrel 2;

[0024] like Figure 2 , Figure 3 and Figure 4As shown, the washing device 4 includes a guide bucket 41 and an infusion pump 42. The guide bucket 41 is fixedly connected to the inside of the washing bucket 2. The infusion pump 42 is installed on the surface of the washing bucket 2. The liquid outlet end of the infusion pump 42 is fixedly connected and connected with a nozzle 43. The liquid outlet end of the nozzle 43 penetrates into the inside of the washing bucket 2. The liquid outlet end of the nozzle 43 faces the guide bucket 41. The liquid outlet end of the nozzle 43 is offset from the connection between the cyclone separator 1 and the washing bucket 2. The vertical cross-section of the inner side of the guide bucket 41 is an isosceles trapezoid. The upper opening of the guide bucket 41 is larger than the lower opening of the guide bucket 41. The washing device 4 also includes a guide plate 44. The guide plate 44 is fixedly connected to the inside of the washing bucket 2. The guide plate 44 is arranged between the nozzle 43 and the guide bucket 41. The liquid outlet end of the nozzle 43 faces the guide plate 44. The shape of 44 is spiral; the number of nozzles 43 is not less than two, and the nozzles 43 are distributed in a ring shape on the inner top wall of the washing tub 2 around the axis of the washing tub 2; the liquid outlet end of the infusion pump 42 is fixedly connected and communicated with a liquid diverter 45, and the liquid inlet end of the nozzle 43 is fixedly connected and communicated with the liquid outlet end of the liquid diverter 45; the number of nozzles 43 and guide plates 44 is the same, and the guide plate 44 is fixedly connected to the inside of the washing tub 2 in a ring shape around the axis of the washing tub 2; the washing device 4 also includes an isolation cylinder 46 fixedly connected to the inner top wall of the washing tub 2, and the connection between the cyclone separator 1 and the washing tub 2 is connected to the isolation cylinder 46; the inner diameter of the isolation cylinder 46 is the same as the cross-sectional size of the connection between the cyclone separator 1 and the washing tub 2, and the bottom of the isolation cylinder 46 is arranged on the inner side of the guide bucket 41.

[0025] When the utility model is in use, the staff needs to pre-connect the air inlet and air outlet of the cyclone separator 1 with the forging furnace and the circulating water spray tower for manufacturing soda ash respectively (the forging furnace and the circulating water spray tower are both existing equipment that have been disclosed for forging soda ash and equipment for spraying and purifying furnace gas, and are well-known technologies familiar to those skilled in the art, so they are not drawn in the drawings of the specification), and then connect the liquid inlet end of the infusion pump 42 with the water source. When the furnace gas of the soda ash forging furnace enters the interior of the cyclone separator 1, the cyclone separator 1 relies on the rotational motion caused by the tangential introduction of the airflow, which increases the centrifugal force of the alkali dust in the furnace gas, so that the furnace gas is separated from the alkali dust, and the furnace body enters the circulating water spray tower along the air inlet end of the cyclone separator 1 for spray purification. At the same time, the alkali dust is guided into the washing barrel 2 along the inner wall of the cyclone separator 1, and the alkali dust is removed from the washing barrel 2 by the cyclone separator 1. The guide bucket 41 flows downward, and at the same time, the infusion pump 42 draws water into the liquid diverter 45, and the liquid diverter 45 evenly transports the water into the corresponding nozzle 43, and the nozzle 43 sprays the water onto the guide bucket 41. Since the shape of the guide bucket 41 is spiral, the guide bucket 41 cooperates with the inner wall of the washing bucket 2 to spirally guide the water flow. After multiple spiral water flows are guided to the inner side of the guide bucket 41, the water flows spirally through the inner side of the guide bucket 41, which can take away the alkaline dust adhering to the inner side of the guide bucket 41, so as to reduce the probability of alkaline dust accumulation and retention inside the washing bucket 2, so as to reduce the subsequent maintenance and cleaning burden of the staff, and the lower opening of the guide bucket 41 collides with each other, which can disperse the accumulated alkaline dust, so that the alkaline dust is more thoroughly dispersed in the water, and finally the water carrying the alkaline dust is discharged along the washing bucket 2 and the sewage pipe 3.

[0026] It should be noted that the cyclone separator 1, forging furnace, water circulation spray tower, infusion pump 42 and liquid diverter 45 in the above description are all relatively mature devices in existing technology applications. The specific models can be selected according to actual needs. At the same time, the forging furnace, water circulation spray tower and infusion pump 42 can be powered by a built-in power supply or by AC power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A gas recovery device for a calcining furnace in the production of soda ash, characterized in that: include: A cyclone separator (1), wherein the bottom of the cyclone separator (1) is fixedly connected to and communicated with a washing bucket (2), and the surface of the washing bucket (2) is fixedly connected to and communicated with a sewage pipe (3); A washing device (4), the washing device (4) being mounted on the surface of the washing tub (2), and one end of the washing device (4) penetrating into the interior of the washing tub (2); The washing device (4) comprises a guide bucket (41) and an infusion pump (42), wherein the guide bucket (41) is fixedly connected to the inside of the washing bucket (2), and the infusion pump (42) is installed on the surface of the washing bucket (2). The liquid outlet end of the infusion pump (42) is fixedly connected and connected to a nozzle (43), and the liquid outlet end of the nozzle (43) penetrates into the inside of the washing bucket (2). The liquid outlet end of the nozzle (43) faces the guide bucket (41), and the liquid outlet end of the nozzle (43) is offset from the connection point between the cyclone separator (1) and the washing bucket (2).

2. The gas recovery device for a calcining furnace for producing soda ash according to claim 1, characterized in that: The vertical cross-section of the inner side of the guide bucket (41) is in the shape of an isosceles trapezoid, and the upper opening of the guide bucket (41) is larger than the lower opening of the guide bucket (41).

3. The gas recovery device for a calcining furnace for producing soda ash according to claim 1, characterized in that: The washing device (4) further comprises a guide plate (44), wherein the guide plate (44) is fixedly connected to the interior of the washing tub (2), the guide plate (44) is arranged between the spray pipe (43) and the guide bucket (41), the liquid outlet end of the spray pipe (43) faces the guide plate (44), and the shape of the guide plate (44) is spiral.

4. A gas recovery device for a calcining furnace for producing soda ash according to claim 3, characterized in that: The number of the spray pipes (43) is not less than two, and the spray pipes (43) are distributed in a ring shape on the inner top wall of the washing tub (2) around the axis of the washing tub (2).

5. A gas recovery device for a calcining furnace for producing soda ash according to claim 4, characterized in that: The liquid outlet end of the infusion pump (42) is fixedly connected to and communicated with a liquid diverter (45), and the liquid inlet end of the nozzle (43) is fixedly connected to and communicated with the liquid outlet end of the liquid diverter (45).

6. A gas recovery device for a calcining furnace for producing soda ash according to claim 4, characterized in that: The number of the spray pipes (43) and the guide plates (44) is the same, and the guide plates (44) are fixedly connected to the inside of the washing tub (2) in a ring shape around the axis of the washing tub (2).

7. The gas recovery device for a calcining furnace for producing soda ash according to claim 1, characterized in that: The washing device (4) further comprises an isolating cylinder (46) fixedly connected to the inner top wall of the washing tub (2), and the connection point between the cyclone separator (1) and the washing tub (2) is connected to the isolating cylinder (46).

8. The gas recovery device for a calcining furnace for producing soda ash according to claim 7, characterized in that: The inner diameter of the isolation cylinder (46) is the same as the cross-sectional dimension of the connection point between the cyclone separator (1) and the washing tub (2), and the bottom of the isolation cylinder (46) is arranged on the inner side of the guide bucket (41).

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