CN110433594A - A reaction tower for desulfurization and denitrification environmental protection flue gas treatment - Google Patents

Abstract

The invention discloses a reaction tower for desulfurization and denitrification environmental flue gas treatment, specifically relates to the technical field of spray towers, including a reaction tower body, the bottom of the reaction tower body is fixedly provided with a first partition plate, the first partition The surface of the plate is fixedly provided with a connecting pipe, the surface of the reaction tower body on one side of the first dividing plate is fixedly connected with an air inlet pipe, and the top of the first dividing plate is provided with a second dividing plate, and the second dividing plate It is fixedly connected with the reaction tower body, an air guide pipe is fixedly arranged between the first partition board and the second partition board, and a reaction spray head is fixedly arranged on the bottom surface of the second partition board; the reaction tower body The bottom is filled with lime water. The invention facilitates the flow of waste gas through the connecting pipe and the air guide pipe, facilitates the oxidation reaction between waste gas and lime water, uses the filler layer to improve the contact surface between water and gas, has good waste gas reaction effect, facilitates subsequent gas degradation and purification, and improves the gas treatment effect.

Description

A reaction tower for desulfurization and denitrification environmental protection flue gas treatment

technical field

The invention relates to the technical field of spray towers, more specifically, the invention relates to a reaction tower for desulfurization and denitrification environmental protection flue gas treatment.

Background technique

The acid mist exhaust gas is introduced into the purification tower through the air duct, and after passing through the packing layer, the exhaust gas and the sodium hydroxide absorption liquid undergo full gas-liquid two-phase contact absorption and neutralization reaction. After the acid mist exhaust gas is purified, it is dehydrated and demisted by the demister plate The fan exhausts into the atmosphere.

The existing spray tower can only perform simple spraying operation on the gas, the gas and rainwater cannot be in good contact, and the gas and water cannot contact and react well, which affects the gas treatment effect.

Contents of the invention

In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a reaction tower for desulfurization and denitrification environmental protection flue gas treatment, which facilitates the flow of waste gas through the connecting pipe and the air guide pipe, facilitates the oxidation reaction of waste gas and lime water, and utilizes the packing layer Improve the contact surface between water and gas, the effect of waste gas reaction is good, facilitate the degradation and purification of subsequent gas, and improve the effect of gas treatment, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the present invention provides the following technical solutions: a reaction tower for desulfurization and denitrification environmental protection flue gas treatment, including a reaction tower body, the bottom of the reaction tower body is fixedly provided with a first partition plate, and the first partition The surface of the plate is fixedly provided with a connecting pipe, the surface of the reaction tower body on one side of the first partition plate is fixedly connected with an air inlet pipe, and the top of the first partition plate is provided with a second partition plate, and the second partition plate It is fixedly connected with the reaction tower body, an air guide pipe is fixedly arranged between the first partition board and the second partition board, and a reaction spray head is fixedly arranged on the bottom surface of the second partition board;

The bottom of the reaction tower body is equipped with lime water, and the bottom end surface of the reaction tower body is fixedly provided with an air blowing head, and the bottom of the air blowing head is fixedly connected with an air pipe, and one end of the air pipe is fixedly provided with an air pump, and the air pump Set on the bottom side of the reaction tower body;

The top of the second dividing plate is provided with a third dividing plate, and the third dividing plate is fixedly connected with the reaction tower body, and the bottom surface of the third dividing plate is fixedly provided with a first clear water spray head, so A rain cap is fixedly installed on the top of the air guide tube, and a first clear water drain is fixedly installed on one side of the second partition plate;

A packing layer is placed on the top surface of the third dividing plate, a ventilation intubation is fixedly arranged on the surface of the third dividing plate, a first mist eliminator is arranged on the top of the packing layer, and the top of the first mist eliminator A second demister is provided, the first demister and the second demister are fixedly connected to the reaction tower body, the bottom of the first demister is fixedly provided with a second clear water spray head, and the packing A second clear water drain is fixed on one side of the bottom of the layer;

An impeller is fixedly arranged on the top of the reaction tower body, and an air outlet pipe is fixedly connected to the top of the impeller.

In a preferred embodiment, the bottom end of the communication pipe extends into the lime water installed at the bottom of the reaction tower body, and the extension length is set to 10 cm, and the top end of the communication pipe is flush with the surface of the second partition plate.

In a preferred embodiment, the bottom of the air duct runs through the first partition, the top of the air duct passes through the second partition, and the top end of the air duct protrudes from the top surface of the second partition by a length of The setting is 20cm, and the air guide tube and the connecting tube are arranged in a staggered manner.

In a preferred embodiment, the rain cap is conical in shape, the top end of the air guide tube extends into the rain cap, and air holes are opened on both sides.

In a preferred embodiment, the packing layer is made of inert solid granular material, and the ventilation cannula extends into the packing layer.

In a preferred embodiment, the number of the reaction shower head is set to be multiple, a sedimentation tank is fixedly installed on one side of the reaction tower body, and a reaction water pool is fixedly installed on one side of the sedimentation tank. A first delivery pump is fixedly installed inside the pool, and a reaction water inlet pipe is fixedly connected between the output of the first delivery pump and the reaction spray head.

In a preferred embodiment, the top of the sedimentation tank is in communication with the top of the reaction water tank, and a connecting pipe is fixedly arranged between the sedimentation tank and the bottom of the reaction tower.

In a preferred embodiment, a clean water tank is fixedly installed on one side of the reaction water tank, and a second delivery pump is fixedly installed inside the clean water tank, and the number of the first clean water spray head and the second clean water spray head There are multiple sets, and clean water conduits are fixedly connected between the first clean water spray head and the second clean water spray head and the second delivery pump.

Technical effect and advantage of the present invention:

1. In the present invention, the waste gas is transported between the first partition plate and the second partition plate by setting the intake pipe, and the waste gas is sprayed and dedusted by the reaction spray head, and the waste gas and water enter the bottom of the reaction tower body through the connecting pipe for installation. In the lime water, the waste gas reacts with the hydroxide in the lime water. At the same time, the gas blowing head is used to aerate the lime water to improve the reaction efficiency. The spray head performs clean water spraying, and the subsequent gas enters the inside of the packing layer on the top of the third partition plate through the ventilation intubation, and at the same time, the second clean water spray head sprays the gas in the packing layer with clean water again, and the packing layer increases. The contact surface between large gas and clear water allows them to mix with each other evenly to improve the gas treatment effect, and then use the first demister and the second demister to demist the gas. Compared with the existing spray reaction tower, the exhaust gas reaction effect is better. Good, it is convenient for subsequent gas degradation and purification, and improves the gas treatment effect;

2. The present invention is provided with a sedimentation tank and a reaction water pool, and uses a connecting pipe to connect the bottom of the reaction tower body with the sedimentation tank, so as to facilitate the treatment of calcium hydroxide and carbon dioxide in the lime water to react with the precipitation, and cooperate with the top of the reaction water tank and the sedimentation tank The connection at the top is convenient for separating the water after sedimentation treatment, which in turn facilitates the reuse of reaction water, and also facilitates the proportioning of lime water again to save water.

Description of drawings

Fig. 1 is the overall schematic diagram of the present invention.

Fig. 2 is a schematic diagram of part A of Fig. 1 of the present invention.

Fig. 3 is a schematic diagram of part B of Fig. 1 of the present invention.

Fig. 4 is a schematic top view of the rain hat of the present invention.

Fig. 5 is a side sectional schematic diagram of the rain cap of the present invention.

Fig. 6 is an overall schematic diagram of the rain hat of the present invention.

Fig. 7 is a top cross-sectional schematic view of the air blowing head of the present invention.

The reference signs are: 1. reaction tower body, 2. first partition plate, 3. connecting pipe, 4. intake pipe, 5. second partition board, 6. air guide pipe, 7. reaction spray head, 8. gas blowing head, 9. gas delivery pipe , 10 Air pump, 11 The third partition board, 12 The first clean water sprinkler head, 13 Rain cap, 14 The first clean water drain pipe, 15 Packing layer, 16 Ventilation intubation, 17 The first demister, 18 The second demister Fogger, 19 second clear water spray head, 20 second clear water drain pipe, 21 impeller, 22 air outlet pipe, 23 air outlet hole, 24 sedimentation tank, 25 reaction water pool, 26 first delivery pump, 27 reaction water inlet pipe, 28 Connecting pipe, 29 clear water tanks, 30 second delivery pumps, 31 clear water conduits.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The present invention provides a reaction tower for desulfurization and denitrification environmental flue gas treatment as shown in Figure 1-7, comprising a reaction tower body 1, the bottom of the reaction tower body 1 is fixedly provided with a first partition plate 2, and the second A connecting pipe 3 is fixedly arranged on the surface of a partition plate 2, and an air inlet pipe 4 is fixedly connected to the surface of the reaction tower body 1 on one side of the first partition plate 2, and a second partition is arranged on the top of the first partition plate 2. plate 5, the second dividing plate 5 is fixedly connected with the reaction tower body 1, and an air duct 6 is fixedly arranged between the first dividing plate 2 and the second dividing plate 5, and the second dividing plate 5. The bottom surface is fixed with a reaction spray head 7;

The bottom of the reaction tower body 1 is equipped with lime water, and the bottom end surface of the reaction tower body 1 is fixedly provided with an air blowing head 8, and the bottom of the air blowing head 8 is fixedly connected with a gas delivery pipe 9, and one end of the gas delivery pipe 9 is fixedly arranged There is an air pump 10, and the air pump 10 is arranged on the bottom side of the reaction tower body 1;

The top of the second dividing plate 5 is provided with a third dividing plate 11, the third dividing plate 11 is fixedly connected with the reaction tower body 1, and the bottom surface of the third dividing plate 11 is fixedly provided with the first clear water A shower head 12, a rain cap 13 is fixedly arranged at the top of the air guide pipe 6, and a first clear water drain pipe 14 is fixedly arranged on one side of the second partition plate 5;

A packing layer 15 is placed on the top surface of the third dividing plate 11, a ventilation intubation tube 16 is fixedly arranged on the surface of the third dividing plate 11, and a first mist eliminator 17 is arranged on the top of the packing layer 5. The top of the first demister 17 is provided with a second demister 18, the first demister 17 and the second demister 18 are fixedly connected with the reaction tower body 1, and the bottom of the first demister 17 is fixed A second clean water shower head 19 is provided, and a second clean water drain pipe 20 is fixedly arranged on the bottom side of the packing layer 15;

The top of the reaction tower body 1 is fixedly provided with an impeller 21 , and the top of the impeller 21 is fixedly connected with an air outlet pipe 22 .

Further, the bottom end of the communication pipe 3 extends into the lime water installed at the bottom of the reaction tower body 1, and the extension length is set to 10 cm. The top of the communication pipe 3 is flush with the surface of the second partition plate 2, so that the gas enters the The lime water is convenient for the oxidation reaction, and it is also convenient for the first partition plate 2 to return the water to the bottom of the reaction tower body 1 .

Further, the bottom of the air guide tube 6 runs through the first partition plate 2, the top of the air guide tube 6 runs through the second partition plate 5, and the top end of the air guide tube 6 protrudes from the top surface of the second partition plate 5, extending The length is set to 20cm, and the air guide pipe 6 and the connecting pipe 3 are arranged in a staggered manner, so that the gas after the lime water reaction is transported to the top of the second partition plate 5, and the gas is sprayed with clean water.

Further, the shape of the rain cap 13 is conical, the top of the air guide tube 6 extends into the rain cap 13 , and air outlet holes 23 are set on both sides to prevent clear water from entering the air guide tube 6 .

Further, the packing layer 15 is made of inert solid particle materials, and the ventilation intubation tube 16 extends into the packing layer 15, and the packing layer 15 increases the contact surface between the gas and clear water, so that they are evenly mixed with each other, and the gas treatment is improved. Effect.

The embodiment is specifically: when using the reaction tower for waste gas treatment, the intake pipe 4 transports the waste gas between the first partition plate 2 and the second partition plate 5, and the reaction spray head 7 sprays and removes dust from the waste gas. The lime water sprayed by the sprinkler head 7, so between the first partition plate 2 and the second partition plate 5, the waste gas will react with the water to produce precipitation, and the waste gas and water will enter the reaction tower through the connecting pipe 3 In the lime water installed at the bottom of the reaction tower body 1, the exhaust gas reacts with the hydroxide in the lime water. At the same time, the gas blowing head 8 is used to blow gas into the lime water. The number of the gas blowing heads 8 is set in multiples, and they are evenly distributed at the bottom of the reaction tower body 1, so that the water is violently Tumbling to improve the reaction efficiency, the reacted gas is transported to the top of the second partition plate 8 through the air guide tube 6, the first clean water spray head 12 performs clean water spraying, and the subsequent gas enters the third partition plate through the ventilation intubation tube 16 11 Inside the packing layer 15 at the top, at the same time, the second clean water spray head 19 sprays the gas in the packing layer 15 with clean water again, and the packing layer 15 increases the contact surface between the gas and the clean water to make them mix evenly and improve the gas treatment. As a result, the first mist eliminator 17 and the second mist eliminator 18 are used for gas demisting, and the waste gas reaction effect is good, which is convenient for subsequent gas degradation and purification, and improves the gas treatment effect;

A reaction tower for desulfurization and denitrification environmental protection flue gas treatment as shown in Figure 1, the number of the reaction spray head 7 is set to a plurality, the side of the reaction tower body 1 is fixedly provided with a sedimentation tank 24, the sedimentation tank One side of 24 is fixedly provided with a reaction water pool 25, and the inside of the reaction water pool 25 is fixedly provided with a first delivery pump 26, and a reaction water inlet pipe 27 is fixedly connected between the output of the first delivery pump 26 and the reaction spray head 7 .

Further, the top of the sedimentation tank 24 communicates with the top of the reaction water tank 25, and a connecting pipe 28 is fixedly arranged between the sedimentation tank 24 and the bottom of the reaction tower body 1 to facilitate the flow of water between the sedimentation tank 24 and the reaction water tank 25. It is convenient for the lime water at the bottom of the reaction tower body 1 to enter into the sedimentation tank 24 for sedimentation operation.

Further, a clear water pool 29 is fixedly arranged on one side of the reaction water pool 25, and a second delivery pump 30 is fixedly arranged inside the clear water pool 29, and the first clean water spray head 12 and the second clean water spray head 19 The quantity is all set to a plurality, and a clean water conduit 31 is fixedly connected between the first clean water spray head 12, the second clean water spray head 19 and the second delivery pump 30, so as to facilitate clean water spraying of the reacted gas deal with.

The embodiment is specifically: when using the reaction tower, the lime water at the bottom of the reaction tower body 1 will enter the sedimentation tank 24 through the connecting pipe 28, and cooperate with the lime water sprayed by the reaction spray head 7 to realize the circulation of water and utilize the sedimentation The pond 24 processes the calcium hydroxide in the lime water and carbon dioxide to react to produce precipitation, and the lime water after precipitation flows from the top of the sedimentation pond 24 to the reaction water pool 25, that is, the lime water without precipitation enters the reaction water pool 25, separates and precipitates The treated water is convenient for the first conveying pump 26 to deliver the reaction water, i.e. lime water, to the reaction shower head 7, which facilitates the reutilization of reverse water, and also facilitates the proportioning of the lime water again, because the purity of the lime water after the reaction is Therefore, the ratio of purity can be carried out in the reaction water pool 25 to save water.

The working principle of the present invention:

Referring to Figures 1-7 of the specification, when using the reaction tower for waste gas treatment, the intake pipe 4 transports the waste gas between the first partition plate 2 and the second partition plate 5, and the reaction spray head 7 sprays and removes dust from the waste gas. , the waste gas and water enter the lime water installed at the bottom of the reaction tower body 1 through the connecting pipe 3, the waste gas reacts with the hydroxide in the lime water, and at the same time, the gas blowing head 8 blows gas into the lime water to improve the reaction efficiency, and the reacted gas passes through The air guide pipe 6 is transported to the top of the second partition plate 8, the first clear water spray head 12 performs clear water spraying, and the follow-up gas enters the inside of the packing layer 15 on the top of the third partition plate 11 through the ventilation intubation tube 16, while the second The clean water spray head 19 sprays the gas in the packing layer 15 with clean water again, and the packing layer 15 increases the contact surface between the gas and the clean water to make them mix evenly and improve the gas treatment effect, and then use the first demister 17 and the second demister 18 for gas demisting, the exhaust gas reaction effect is good, the subsequent gas degradation and purification are convenient, and the gas treatment effect is improved;

With reference to accompanying drawing 1 of specification sheet, when using reaction tower, the lime water at the bottom of reaction tower body 1 utilizes connecting pipe 28 to enter in the settling tank 24, utilizes settling tank 24 to process the calcium hydroxide in the lime water and carbon dioxide reaction to produce precipitation, The lime water after sedimentation flows from the top of the sedimentation tank 24 to the reaction water tank 25, and the water after the sedimentation treatment is separated to facilitate the first delivery pump 26 to transport the reaction water, i.e. lime water, to the reaction spray head 7, thereby facilitating the reflow of the reverse water. Utilization also facilitates the proportioning of lime water again to save water.

The last few points should be explained: First, in the description of this application, it should be explained that, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, which can be mechanical connection Or electrical connection, it can also be the internal communication of two components, it can be directly connected, "up", "down", "left", "right", etc. are only used to indicate the relative positional relationship, when the absolute position of the object being described Change, the relative positional relationship may change;

Secondly: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved, other structures can refer to the usual design, and the same embodiment and different embodiments of the present invention can be combined with each other if there is no conflict;

Finally: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention within the scope of protection.

Claims (8)

1. A reaction tower for desulfurization and denitrification environmental flue gas treatment, comprising a reaction tower body (1), characterized in that: the bottom of the reaction tower body (1) is fixedly provided with a first dividing plate (2), and the second A connecting pipe (3) is fixedly arranged on the surface of a dividing plate (2), and an air inlet pipe (4) is fixedly connected to the surface of the reaction tower body (1) on one side of the first dividing plate (2). The top of the dividing plate (2) is provided with a second dividing plate (5), and the second dividing plate (5) is fixedly connected with the reaction tower body (1), and the first dividing plate (2) is connected with the second dividing plate (5). An air duct (6) is fixedly arranged between the partition plates (5), and a reaction spray head (7) is fixedly arranged on the bottom end surface of the second partition board (5); The bottom of the reaction tower body (1) is equipped with lime water, and the bottom end surface of the reaction tower body (1) is fixedly provided with an air blowing head (8), and the bottom of the air blowing head (8) is fixedly connected with a gas delivery pipe (9 ), one end of the gas delivery pipe (9) is fixedly provided with an air pump (10), and the air pump (10) is arranged on one side of the bottom of the reaction tower body (1); The top of the second dividing plate (5) is provided with a third dividing plate (11), and the third dividing plate (11) is fixedly connected with the reaction tower body (1), and the third dividing plate ( 11) A first clean water shower head (12) is fixedly installed on the bottom surface, a rain cap (13) is fixedly installed on the top of the air guide pipe (6), and a second partition plate (5) is fixedly installed on one side. One clean water drain pipe (14); A packing layer (15) is placed on the top surface of the third dividing plate (11), the surface of the third dividing plate (11) is fixedly provided with a ventilation intubation tube (16), and the top of the packing layer (5) is arranged There is a first mist eliminator (17), the top of the first mist eliminator (17) is provided with a second mist eliminator (18), and the first mist eliminator (17) and the second mist eliminator (18) ) are fixedly connected with the reaction tower body (1), the bottom of the first demister (17) is fixedly provided with the second clear water spray head (19), and the bottom side of the packing layer (15) is fixedly provided with the second Two clean water drain pipes (20); An impeller (21) is fixedly arranged on the top of the reaction tower body (1), and an air outlet pipe (22) is fixedly connected to the top of the impeller (21). 2. A reaction tower for desulfurization and denitrification environmental protection flue gas treatment according to claim 1, characterized in that: the bottom end of the connecting pipe (3) extends into the lime water installed at the bottom of the reaction tower body (1), and extends into The length is set to 10 cm, and the top end of the communicating pipe (3) is flush with the surface of the second partition plate (2). 3. A reaction tower for desulfurization and denitrification environmental protection flue gas treatment according to claim 1, characterized in that: the bottom of the air guide pipe (6) runs through the first partition plate (2), and the air guide pipe (6) The top runs through the second dividing plate (5), and the top end of the air guide tube (6) stretches out from the top end surface of the second dividing plate (5), and the extension length is set to 20cm. 3) It is set in a staggered manner. 4. A reaction tower for desulfurization and denitrification environmental protection flue gas treatment according to claim 1, characterized in that: the shape of the rain cap (13) is conical, and the top of the air guide pipe (6) extends into the rain cap (13) inside, and both sides offer air outlet (23). 5. A reaction tower for desulfurization and denitrification environmental protection flue gas treatment according to claim 1, characterized in that: the packing layer (15) is made of inert solid particle materials, and the ventilation cannula (16) extends into Inside the packing layer (15). 6. A reaction tower for desulfurization and denitrification environmental protection flue gas treatment according to claim 1, characterized in that: the number of the reaction spray heads (7) is set to be multiple, and one side of the reaction tower body (1) A sedimentation tank (24) is fixedly arranged, and a reaction water tank (25) is fixedly arranged on one side of the sedimentation tank (24), and a first delivery pump (26) is fixedly arranged inside the reaction water tank (25). A reaction water inlet pipe (27) is fixedly connected between the output of the first delivery pump (26) and the reaction shower head (7). 7. A reaction tower for desulfurization and denitrification environmental protection flue gas treatment according to claim 6, characterized in that: the top of the sedimentation tank (24) communicates with the top of the reaction water pool (25), and the sedimentation tank (24) ) and the bottom of the reaction tower body (1) are fixedly provided with a connecting pipe (28). 8. A reaction tower for desulfurization and denitrification environmental protection flue gas treatment according to claim 6, characterized in that: a clear water pool (29) is fixedly arranged on one side of the reaction water pool (25), and the clear water pool (29) ) is fixedly provided with a second conveying pump (30) inside, the number of the first clean water shower head (12) and the second clean water shower head (19) is set to a plurality, and the first clean water shower head ( 12) and the second clean water shower head (19) and the second delivery pump (30) are fixedly connected with a clean water conduit (31).