CN212167014U

CN212167014U - Desulfurization and denitrification ammonia water evaporation heat exchange device

Info

Publication number: CN212167014U
Application number: CN202020587350.3U
Authority: CN
Inventors: 张善伟
Original assignee: Weifang Yexing New Type Building Material Co ltd
Current assignee: Weifang Yexing New Type Building Material Co ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-12-18
Anticipated expiration: 2030-04-20

Abstract

The utility model discloses a SOx/NOx control aqueous ammonia evaporation heat transfer device, including the ammonia water tank, be provided with the transfer pump on the ammonia water tank, and the input and the ammonia water tank intercommunication of transfer pump, the output intercommunication of transfer pump has the multi-head pipe, multi-head pipe intercommunication has the steam chest, a plurality of outputs of multi-head pipe all communicate there is the shower nozzle. The utility model relates to an environmental protection equipment technical field, through the setting of shower nozzle, can atomize the aqueous ammonia and spray, the heat in the vapor chamber is absorbed to the ammoniacal liquor of being convenient for, make its evaporation that can be heated fast, produce the ammonia, utilize the flue gas in ammonia and the flue to mix the reaction, compare in directly spraying the aqueous ammonia, gaseous state's ammonia can be better carry out the mixing reaction with the flue gas, can effectively reduce the quantity of aqueous ammonia and the humidity of flue gas, and can increase substantially flue gas desulfurization and denitration efficiency.

Description

Desulfurization and denitrification ammonia water evaporation heat exchange device

Technical Field

The utility model relates to an environmental protection equipment technical field especially relates to a SOx/NOx control aqueous ammonia evaporation heat transfer device.

Background

In the process of production in the coke-oven plant, can produce a large amount of waste gases in the coke-oven, often need carry out SOx/NOx control to the flue gas that produces and handle, generally can be through directly spouting the 19% aqueous ammonia of concentration in to the flue for carry out SOx/NOx control with the flue gas that produces and handle.

However, in the actual production process, the ammonia water is directly sprayed, so that the using amount is large, the flue gas humidity entering the system is large, the influence on the desulfurization and denitrification catalyst is large, and the desulfurization and denitrification effect is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the ammonia water usage amount is high and the flue gas humidity is large in the existing ammonia water that directly sprays in to the flue among the prior art, and the desulfurization and denitrification ammonia water evaporation heat transfer device who provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a SOx/NOx control aqueous ammonia evaporation heat transfer device, includes the ammonia water tank, be provided with the transfer pump on the ammonia water tank, and the input and the ammonia water tank intercommunication of transfer pump, the output intercommunication of transfer pump has the multi-head pipe, the multi-head pipe intercommunication has the steam chest, a plurality of outputs of multi-head pipe all communicate there is the shower nozzle, be provided with slewing mechanism on the steam chest, and slewing mechanism's output is connected with the shower nozzle transmission, it is equipped with first electric heating piece to inlay in the inner wall of steam chest.

Preferably, slewing mechanism includes driving motor, first belt pulley and second belt pulley, driving motor sets up on the steam chest, and driving motor's output runs through the upper end lateral wall and the fixedly connected with pivot of steam chest, the cover is equipped with first belt pulley in the pivot, the intercommunication has rotary joint between shower nozzle and the bull pipe, and the cover is equipped with the second belt pulley on the feed liquor pipe of shower nozzle, through belt transmission between first belt pulley and the second belt pulley.

Preferably, a pressing plate is connected in the steam box in a sliding mode, a cylinder is fixedly connected to the side wall of the lower end of the steam box, and the output end of the cylinder penetrates through the steam box and is fixedly connected with the pressing plate.

Preferably, the pressing plate is provided with a second electric heating block, and the pressing plate completely covers the inner top surface of the lower end of the steam box.

Preferably, the steam box is provided with an exhaust pipe, and the exhaust pipe is provided with a check valve.

Preferably, the size of the first belt pulley is larger than that of the second belt pulley, and a filter layer is arranged in the exhaust pipe.

Preferably, a filter screen is arranged in the ammonia water tank.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through the cooperation of the shower nozzle and the first electric heating piece that set up, can utilize the shower nozzle evenly to spray into atomizing liquid drop with the aqueous ammonia, the heat that the first electric heating piece produced is absorbed to the atomizing aqueous ammonia of being convenient for, makes the aqueous ammonia can the flash evaporation output ammonia, mixes with the flue gas in the ammonia entering flue that utilizes the production and carries out SOx/NOx control, compares in directly spouting with the aqueous ammonia, and this is reformed transform and has reduced the aqueous ammonia use amount, and has reduced flue gas humidity.

2. Through the slewing mechanism who sets up and rotary joint's cooperation, can utilize driving motor among the slewing mechanism to drive first belt pulley and second belt pulley and carry out the transmission, make the shower nozzle can rotate at the in-process that sprays the aqueous ammonia and spray, can make the aqueous ammonia more even that sprays, avoid the aqueous ammonia to spray too concentrated, the heating evaporation of being not convenient for.

3. Through the cooperation of the cylinder that sets up and clamp plate, can utilize the cylinder to drive the reciprocal lift of clamp plate, can utilize the ammonia that the clamp plate pressfitting produced, the pressure of reinforcing ammonia makes the ammonia discharge from the blast pipe more fast, and the clamp plate can utilize the second electrical heating piece to further heat the liquid pearl of top-down's suspension at the in-process that goes up and down, improves aqueous ammonia evaporation efficiency.

Drawings

FIG. 1 is a schematic view of an elevational perspective structure of a desulfurization and denitrification ammonia water evaporation heat exchange device provided by the utility model;

fig. 2 is an enlarged schematic view of a portion a in fig. 1.

In the figure: 1 ammonia water tank, 2 infusion pumps, 3 multi-head pipes, 4 steam boxes, 5 spray heads, 6 rotating mechanisms, 61 driving motors, 62 first belt pulleys, 63 second belt pulleys, 7 rotating shafts, 8 pressing plates, 9 cylinders, 10 first electric heating blocks, 11 second electric heating blocks, 12 exhaust pipes, 13 one-way valves, 14 filter layers, 15 filter screens and 16 rotary joints.

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.

Referring to fig. 1-2, a SOx/NOx control aqueous ammonia evaporation heat transfer device, including aqueous ammonia tank 1, be provided with filter screen 15 in the aqueous ammonia tank 1, the setting of filter screen 15 can effectively filter the foreign particles in the aqueous ammonia, be provided with transfer pump 2 on the aqueous ammonia tank 1, and transfer pump 2's input and aqueous ammonia tank 1 intercommunication, transfer pump 2's output intercommunication has multi-end pipe 3, multi-end pipe 3 intercommunication has steam chest 4, be provided with blast pipe 12 on the steam chest 4, and be provided with check valve 13 on the blast pipe 12, the setting of blast pipe 12, be convenient for carry the ammonia in to the flue, the setting of check valve 13, can effectively avoid the backward flow of ammonia.

The output ends of the multi-head pipe 3 are communicated with the spray head 5, the steam box 4 is provided with the rotating mechanism 6, the output end of the rotating mechanism 6 is in transmission connection with the spray head 5, the rotating mechanism 6 comprises a driving motor 61, a first belt pulley 62 and a second belt pulley 63, the driving motor 61 is arranged on the steam box 4, the output end of the driving motor 61 penetrates through the upper end side wall of the steam box 4 and is fixedly connected with a rotating shaft 7, the model of the driving motor 61 is ME2-80M-4, the rotating shaft 7 is sleeved with the first belt pulley 62, a rotary joint 16 is communicated between the spray head 5 and the multi-head pipe 3, a liquid inlet pipe of the spray head 5 is sleeved with the second belt pulley 63, the first belt pulley 62 is in transmission with the second belt pulley 63 through a belt, the rotary joint 16 is arranged, the multi-head pipe 3 can be prevented from rotating along with the spray head 5, and is matched with the first belt pulley 62 and, can transmit driving motor 61's moment, make shower nozzle 5 on the bull pipe 3 rotate and spray, improve the scope and the degree of consistency of spraying of aqueous ammonia, be favorable to the aqueous ammonia to be heated the evaporation.

The steam box is characterized in that a first electric heating block 10 is embedded in the inner wall of the steam box 4, a pressing plate 8 is connected to the steam box 4 in a sliding mode, a cylinder 9 is fixedly connected to the side wall of the lower end of the steam box 4, the output end of the cylinder 9 penetrates through the steam box 4 and is fixedly connected with the pressing plate 8, the type of the cylinder 9 is SC125-800, the cylinder 9 and the pressing plate 8 are matched, the cylinder 9 can be used for driving the pressing plate 8 to ascend, ammonia gas is extruded, and the ammonia gas can be discharged into a flue from the exhaust pipe 12 more quickly.

Be provided with second electrical heating piece 11 on clamp plate 8, clamp plate 8 covers completely on the lower extreme inner top surface of steam chest 4, clamp plate 8's dimensional design, can effectually accept the ammonia liquid that falls, second electrical heating piece 11's setting, can heat evaporation treatment to the ammonia liquid that falls, and second electrical heating piece 11 can cooperate the lift of clamp plate 8, carry out the heating evaporation to the atomizing ammonia liquid of suspension, be favorable to improving the evaporation efficiency of aqueous ammonia, first belt pulley 62's size is greater than the size of second belt pulley 63, be provided with filter layer 14 in blast pipe 12, the dimensional design of second belt pulley 63, be convenient for drive shower nozzle 5 and rotate fast, increase the spraying efficiency of aqueous ammonia, the design of filter layer 14, can effectively avoid in the ammonia liquid that does not evaporate gets into the flue.

When the flue gas in the flue needs to be subjected to desulfurization and denitrification treatment, the infusion pump 2 is started, ammonia water in the ammonia water tank 1 is sucked into the multi-head pipe 3, the driving motor 61, the first electric heating block 10 and the second electric heating block 11 are simultaneously started, the driving motor 61 can drive the first belt pulley 62 to rotate, the first belt pulley 62 can drive the second belt pulleys 63 to rotate through a belt, and then the second belt pulley 63 can drive the spray head 5 to rotate, so that the spray head 5 can rotationally discharge the ammonia water entering the multi-head pipe 3, the spraying range of the ammonia water is diffused, the spraying uniformity is improved, heat generated by the first electric heating block 10 can be absorbed by the sprayed and atomized ammonia liquid, the ammonia water is evaporated to generate steam, the generated steam can enter the flue through the exhaust pipe 12, the flue gas is subjected to desulfurization and denitrification treatment, and the ammonia liquid falling onto the pressing plate 8 can be heated and evaporated by the second electric heating block 11, the evaporation efficiency is improved, after the ammonia liquid in the steam box 4 is evaporated for a period of time, the cylinder 9 is started, the cylinder 9 can drive the pressing plate 8 to reciprocate, lift and slide, the ammonia gas can be compressed by the pressing plate 8 in the lifting process, the ammonia gas can be more quickly discharged into the flue from the exhaust pipe 12 to react with the flue gas, the treatment efficiency of the flue gas is accelerated, and in the lifting process of the pressing plate 8, can further heat the atomized ammonia liquid suspended from top to bottom, further improves the evaporation efficiency, can carry out high-efficiency and rapid evaporation treatment on ammonia water to convert the ammonia water into ammonia gas to be mixed and reacted with flue gas in a flue, and compared with the method of directly spraying the ammonia water, the ammonia gas in a gas state can better be mixed and reacted with the flue gas, the amount of ammonia water and the humidity of flue gas can be effectively reduced, and the flue gas desulfurization and denitrification efficiency can be greatly improved.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a SOx/NOx control aqueous ammonia evaporation heat transfer device, includes ammonia tank (1), its characterized in that, be provided with on ammonia tank (1) and transfer pump (2), and the input and ammonia tank (1) intercommunication of transfer pump (2), the output intercommunication of transfer pump (2) has multi-head pipe (3), multi-head pipe (3) intercommunication has steam chest (4), a plurality of outputs of multi-head pipe (3) all communicate has shower nozzle (5), be provided with slewing mechanism (6) on steam chest (4), and the output and the shower nozzle (5) transmission of slewing mechanism (6) are connected, it is equipped with first electric heating piece (10) to inlay in the inner wall of steam chest (4).

2. The ammonia water evaporation and heat exchange device for desulfurization and denitrification according to claim 1, wherein the rotating mechanism (6) comprises a driving motor (61), a first belt pulley (62) and a second belt pulley (63), the driving motor (61) is arranged on the steam box (4), the output end of the driving motor (61) penetrates through the upper end side wall of the steam box (4) and is fixedly connected with a rotating shaft (7), the rotating shaft (7) is sleeved with the first belt pulley (62), a rotating joint (16) is communicated between the spray head (5) and the multi-head pipe (3), the liquid inlet pipe of the spray head (5) is sleeved with the second belt pulley (63), and the first belt pulley (62) and the second belt pulley (63) are in belt transmission.

3. The ammonia water evaporation and heat exchange device for desulfurization and denitrification according to claim 1, wherein a pressure plate (8) is slidably connected in the steam box (4), a cylinder (9) is fixedly connected to the side wall of the lower end of the steam box (4), and the output end of the cylinder (9) penetrates through the steam box (4) and is fixedly connected with the pressure plate (8).

4. The ammonia water evaporation and heat exchange device for desulfurization and denitrification according to claim 3, wherein the pressure plate (8) is provided with a second electric heating block (11), and the pressure plate (8) completely covers the inner top surface of the lower end of the steam box (4).

5. The ammonia water evaporation and heat exchange device for desulfurization and denitrification according to claim 2, wherein the steam box (4) is provided with an exhaust pipe (12), and the exhaust pipe (12) is provided with a one-way valve (13).

6. The ammonia water evaporation and heat exchange device for desulfurization and denitrification according to claim 5, wherein the size of the first belt pulley (62) is larger than that of the second belt pulley (63), and the filter layer (14) is arranged in the exhaust pipe (12).

7. The ammonia water evaporation and heat exchange device for desulfurization and denitrification according to claim 1, wherein a filter screen (15) is arranged in the ammonia water tank (1).