CN210584497U

CN210584497U - Be used for SOx/NOx control environment-friendly analytic tower

Info

Publication number: CN210584497U
Application number: CN201921363790.4U
Authority: CN
Inventors: 欧阳伟明; 张运国; 吴国志; 胡魁; 王昊东; 刘建新
Original assignee: Hunan Longhao Heavy Industry Technology Co Ltd
Current assignee: Hunan Longhao Heavy Industry Technology Co Ltd
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2020-05-22
Anticipated expiration: 2029-08-21

Abstract

The utility model discloses a be used for SOx/NOx control environment-friendly analytic tower, including waste heat recovery case, desulfurizing tower, denitration tower and chimney, it advances the pipe to be connected with the flue gas on the waste heat recovery case lateral wall, and the flue gas advances to be provided with Y type filter on managing, the waste heat recovery case is through first pipe and desulfurizing tower turn-on connection, the desulfurizing tower passes through second pipe and denitration tower turn-on connection. The utility model discloses in, this be used for SOx/NOx control environment-friendly analytic tower, it is provided with Y type filter to advance to manage at the flue gas, it is provided with waste heat recovery case to advance to manage and the desulfurizing tower between the flue gas, the setting of Y type filter, can filter tar and dust in the flue gas, it causes the jam to the atomizer in heat exchange coil and the desulfurizing tower in the waste heat recovery case to prevent tar and dust in the flue gas, also improve its stability and life that use, waste heat recovery case's setting, can carry out recycle to the waste heat in the flue gas through heat exchange coil, heat energy has been practiced thrift.

Description

Be used for SOx/NOx control environment-friendly analytic tower

Technical Field

The utility model relates to a waste gas treatment technical field especially relates to a be used for SOx/NOx control environment-friendly analytic tower.

Background

The waste gas refers to toxic and harmful gas discharged by human in the production and living process. Especially chemical plants, steel plants, pharmaceutical plants, coking plants and oil refineries, etc., the discharged waste gas has large odor, seriously pollutes the environment and influences the human health, and the waste gas contains a plurality of pollutants with very complex physical and chemical properties and different toxicity. The exhaust gas discharged from fuel combustion contains sulfur dioxide, nitrogen oxides (NOx), hydrocarbons, etc.; various harmful gases and solid wastes are discharged due to different raw materials and processes used in industrial production.

Be used for SOx/NOx control analytic tower at present, generally can purify the sulphide and the nitrogen oxide in the waste gas and clear away, but at the in-process that uses, there are some weak points, waste heat in the flue gas does not have recycle, secondly when carrying out SOx/NOx control to the flue gas, tar and dust in the flue gas do not have filtration purification, result in the easy jam that takes place of results such as pipeline, secondly desulfurizing tower and desulfurization solution case separation set up, area is great, remaining desulfurization solution does not have fine recovery and recycle result in the desulfurization process, so user's demand can not be satisfied.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an environment-friendly desorption tower for desulfurization and denitrification.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an environment-friendly desorption tower for desulfurization and denitrification comprises a waste heat recovery box, a desulfurization tower, a denitrification tower and a chimney;

a flue gas inlet pipe is connected to one side wall of the waste heat recovery tank, a Y-shaped filter is arranged on the flue gas inlet pipe, the waste heat recovery tank is in conduction connection with a desulfurization tower through a first guide pipe, the desulfurization tower is in conduction connection with a denitration tower through a second guide pipe, the denitration tower is in conduction connection with a chimney through a third guide pipe, and an air suction pump is arranged on the third guide pipe;

the waste heat recovery case is embedded with heat exchange coil in inside, heat exchange coil's one end and flue gas advance a tub turn-on connection, heat exchange coil's the other end and first pipe turn-on connection.

Preferably, the bottom of the waste heat recovery tank is connected with a liquid inlet pipe, and the top of the waste heat recovery tank is connected with a liquid outlet pipe.

Preferably, the bottom of desulfurizing tower has the desulfurizing solution case through connecting pipe turn-on connection, the inside welding of desulfurizing tower has the cross mount, and cross mount bottom bolt fastening has a plurality of atomizer, the desulfurizing solution case passes through transfer line and atomizer turn-on connection, be provided with the water pump on the transfer line, the one end of transfer line is located the desulfurizing solution case and is provided with the filter mantle.

Preferably, an SCR reactor is provided inside the denitration tower.

Preferably, the center of the bottom of the desulfurization solution tank is connected with a discharge pipe, and the discharge pipe is provided with a control valve.

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

1. the utility model discloses in, this be used for SOx/NOx control environment-friendly analytic tower, it is provided with Y type filter to advance to manage at the flue gas, it is provided with waste heat recovery case to advance to manage and the desulfurizing tower between the flue gas, the setting of Y type filter, can filter tar and dust in the flue gas, it causes the jam to the atomizer in heat exchange coil and the desulfurizing tower in the waste heat recovery case to prevent tar and dust in the flue gas, also improve its stability and life that use, waste heat recovery case's setting, can carry out recycle to the waste heat in the flue gas through heat exchange coil, heat energy has been practiced thrift.

2. The utility model discloses in, this be used for SOx/NOx control environment-friendly analytic tower, there is the desulfurization solution case bottom the desulfurizing tower through the connecting pipe switch-on connection, unique structural design like this forms the integral structure, has reduced the area of desulfurizing tower to can directly flow back to the desulfurization solution incasement through atomizer spun desulfurization solution, recycle has practiced thrift the cost.

Drawings

Fig. 1 is a schematic structural view of an environment-friendly desorption tower for desulfurization and denitrification according to the present invention;

fig. 2 is a schematic structural diagram of a desulfurization tower for a desulfurization and denitrification environmental-friendly desorption tower provided by the utility model;

fig. 3 is a schematic structural view of a waste heat recovery tank for a desulfurization and denitrification environmental-friendly desorption tower provided by the utility model;

fig. 4 is the utility model provides a structural schematic diagram of a denitration tower for SOx/NOx control environment-friendly analytic tower.

Illustration of the drawings:

1. a flue gas inlet pipe; 11. a Y-type filter; 2. a waste heat recovery tank; 21. a liquid inlet pipe; 22. A heat exchange coil; 23. a liquid outlet pipe; 3. a first conduit; 4. a desulfurizing tower; 41. a connecting pipe; 42. A desulfurization solution tank; 43. a filter housing; 44. a water pump; 45. a transfusion tube; 46. a cross-shaped fixing frame; 47. an atomizing spray head; 48. a discharge pipe; 49. a control valve; 5. a second conduit; 6. a denitration tower; 61. an SCR reactor; 7. a third conduit; 8. a getter pump; 9. and (4) a chimney.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows: referring to fig. 1 to 4, an environment-friendly desorption tower for desulfurization and denitrification comprises a waste heat recovery tank 2, a desulfurization tower 4, a denitrification tower 6 and a chimney 9;

a flue gas inlet pipe 1 is connected to one side wall of the waste heat recovery tank 2, a Y-shaped filter 11 is arranged on the flue gas inlet pipe 1, the waste heat recovery tank 2 is in conduction connection with a desulfurization tower 4 through a first guide pipe 3, the desulfurization tower 4 is in conduction connection with a denitration tower 6 through a second guide pipe 5, the denitration tower 6 is in conduction connection with a chimney 9 through a third guide pipe 7, and an air suction pump 8 is arranged on the third guide pipe 7;

heat exchange coil 22 is embedded in waste heat recovery case 2, and heat exchange coil 22's one end and flue gas advance pipe 1 turn-on connection, and heat exchange coil 22's the other end and first pipe 3 turn-on connection.

Example two: referring to fig. 1 and 3, the bottom of the waste heat recovery tank 2 is connected with a liquid inlet pipe 21, the top of the waste heat recovery tank 2 is connected with a liquid outlet pipe 23, a heat exchange medium can be injected into the waste heat recovery tank 2 through the liquid inlet pipe 21, waste heat in flue gas is absorbed through a heat exchange coil 22, and then the waste heat in the flue gas is discharged and used through the liquid outlet pipe 23, so that circular flow is realized, and the waste heat in the flue gas is recycled.

Example three: referring to fig. 1 and 2, the bottom of the desulfurizing tower 4 is conductively connected with a desulfurizing solution tank 42 through a connecting pipe 41, the desulfurizing tower 4 is internally welded with a cross fixing frame 46, a plurality of atomizing spray heads 47 are fixed at the bottom of the cross fixing frame 46 through bolts, the desulfurizing solution tank 42 is conductively connected with the atomizing spray heads 47 through a liquid conveying pipe 45, a water pump 44 is arranged on the liquid conveying pipe 45, one end of the liquid conveying pipe 45 is positioned at the desulfurizing solution tank 42 and is provided with a filter cover 43, the desulfurizing solution tank 42 is conductively connected with the bottom of the desulfurizing tower 4 through the connecting pipe 41, the unique structural design forms an integrated structure, the floor area of the desulfurizing tower 4 is reduced, and the desulfurizing solution sprayed out through the atomizing spray heads 47 can directly flow back into the desulfurizing solution tank 42 for recycling, the filter cover 43 is arranged for filtering the desulfurizing solution entering the liquid conveying pipe, prevents CaSO4 solid from crystallizing out in the desulfurization solution tank 42 and causing blockage of the liquid conveying pipe 45.

Example four: referring to fig. 4, an SCR reactor 61 is provided inside the denitration tower 6, and the SCR reactor 61 removes nitrogen oxides in flue gas by a selective catalytic reduction method that reduces NOx by ammonia (NH 3).

Example five: referring to fig. 2, a discharging pipe 48 is connected to the center of the bottom of the desulfurization solution tank 42, a control valve 49 is disposed on the discharging pipe 48, and the discharging pipe 48 is configured to discharge the internal solution during the cleaning process in the desulfurization solution tank 42.

The working principle is as follows: this be used for SOx/NOx control environment-friendly analytic tower during use, at first the flue gas advances pipe 1 through the flue gas, loop through Y type filter 11 again and heat exchange coil 22 in the waste heat recovery case 2 enters into desulfurizing tower 4 in, open water pump 44 this moment, water pump 44 is gone into the desulfurization solution pump in the desulfurizing solution case 42 and is spouted in atomizer 47, contact with the gas that discharges into desulfurizing tower 4, carry out the desulfurization, the gas after the desulfurization enters into denitration tower 6 through second pipe 5 in, carry out denitration treatment through SCR reactor 61 in denitration tower 6, the gas after handling enters into chimney 9 through third pipe 7 under the effect of aspirator pump 8 and discharges.

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. An environment-friendly analytic tower for desulfurization and denitrification is characterized by comprising a waste heat recovery box (2), a desulfurization tower (4), a denitrification tower (6) and a chimney (9);

a flue gas inlet pipe (1) is connected to one side wall of the waste heat recovery tank (2), a Y-shaped filter (11) is arranged on the flue gas inlet pipe (1), the waste heat recovery tank (2) is in conduction connection with a desulfurization tower (4) through a first guide pipe (3), the desulfurization tower (4) is in conduction connection with a denitration tower (6) through a second guide pipe (5), the denitration tower (6) is in conduction connection with a chimney (9) through a third guide pipe (7), and an air suction pump (8) is arranged on the third guide pipe (7);

heat exchange coil (22) are embedded in the waste heat recovery tank (2), one end of the heat exchange coil (22) is connected with the flue gas inlet pipe (1) in a conduction mode, and the other end of the heat exchange coil (22) is connected with the first guide pipe (3) in a conduction mode.

2. The environment-friendly analytic tower for desulfurization and denitrification according to claim 1, wherein the bottom of the waste heat recovery tank (2) is connected with a liquid inlet pipe (21), and the top of the waste heat recovery tank (2) is connected with a liquid outlet pipe (23).

3. The environment-friendly analytic tower for desulfurization and denitrification according to claim 1, wherein the bottom of the desulfurization tower (4) is conductively connected with a desulfurization solution tank (42) through a connecting pipe (41), a cross fixing frame (46) is welded inside the desulfurization tower (4), a plurality of atomizing nozzles (47) are fixed at the bottom of the cross fixing frame (46) through bolts, the desulfurization solution tank (42) is conductively connected with the atomizing nozzles (47) through a liquid conveying pipe (45), a water pump (44) is arranged on the liquid conveying pipe (45), and a filter cover (43) is arranged at one end of the liquid conveying pipe (45) and located on the desulfurization solution tank (42).

4. The environment-friendly desorption tower for desulfurization and denitrification according to claim 1, wherein the denitration tower (6) is internally provided with an SCR reactor (61).

5. The environment-friendly desorption tower for desulfurization and denitrification according to claim 3, wherein a discharge pipe (48) is connected to the center of the bottom of the desulfurization solution tank (42), and a control valve (49) is arranged on the discharge pipe (48).