CN219955387U - Corrosion-resistant device of preheater - Google Patents

Abstract

The utility model discloses an anti-corrosion device of a preheater, which comprises a preheater body, a preheating pipe and a water outlet, wherein a footstock is arranged at the upper end of the preheater body, an air inlet is arranged at one end of the preheater body, an air outlet is arranged at the other end of the preheater body, the preheating pipe is arranged in the preheater body, an air supplementing component is arranged above the preheater body, the air supplementing component comprises an air supplementing pump, the air supplementing pump is fixedly arranged above the preheater body, one end of the air supplementing pump is connected with an air inlet pipe, the end part of the air inlet pipe is connected with a dust cover, and the other end of the air supplementing pump is connected with an exhaust pipe. This anticorrosive device of pre-heater can accelerate the gas flow of inside flue gas through the use of moisturizing subassembly, avoids the inside efficiency that flows because of the hindrance of component of pre-heater, and the flue gas that reduces, and then reduces the soot adhesion in the flue gas on the metal wall, reduces the inside deposition of pre-heater and hardens the volume.

Description

Corrosion-resistant device of preheater

Technical Field

The utility model relates to the technical field of preheaters, in particular to an anti-corrosion device of a preheater.

Background

The corrosion phenomenon can be caused in the air preheater when the air preheater is used, the use of the air preheater is seriously influenced, the corrosion reasons include flue gas dew point corrosion, low-temperature slagging corrosion and tight arrangement of preheater elements, so that the gas flow resistance is increased, in addition, the metal wall temperature is lower due to ash in the low-temperature heated area, acid steam can diffuse to the metal wall through the ash layer to form sulfuric acid, so that deposited ash is hard and difficult to remove, and the service life of the preheater is prolonged due to corrosion resistance in the preheater;

the anti-corrosion device of the air preheater disclosed in the prior publication No. CN203837007U comprises an air preheater, wherein a flue gas inlet of the air preheater is communicated with a flue gas outlet of a boiler, a fan is connected to a cold air inlet of the air preheater, a hot air return pipe is communicated to a hot air outlet of the air preheater, the other end of the hot air return pipe is communicated with the air inlet side of an inner cavity of the fan, and a valve is connected to the hot air return pipe in series;

in the above document, through the arrangement of the hot air return pipe, a part of hot air flowing out of the air preheater is led to the air inlet side of the fan to be mixed with cold air, and then the mixture is sent into the air preheater by the fan, so that the wall temperature of a pipe at the cold air inlet of the air preheater can be remarkably improved, the wall temperature is higher than the acid dew point of flue gas, the low-temperature corrosion of the air preheater can be effectively prevented, and the service life of the air preheater is remarkably prolonged; however, the above-mentioned method can solve the dew point corrosion of the flue gas, but the corrosion caused by the increase of the gas flow resistance is difficult to solve for the low-temperature slagging corrosion and the closely arranged preheater elements, so we propose a corrosion protection device for the preheater so as to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide an anti-corrosion device for a preheater, which solves the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides an anticorrosive device of pre-heater, includes pre-heater body, preheating pipe and outlet, the footstock is installed to the upper end of pre-heater body, and the air intake is installed to the one end of pre-heater body, the air exit is installed to the other end of pre-heater body, the internally mounted of pre-heater body has the preheating pipe, and installs the moisturizing subassembly in the top of pre-heater body, the moisturizing subassembly includes the moisturizing pump, moisturizing pump fixed mounting is in the top of pre-heater body, and moisturizing pump one end is connected with the intake pipe, the end connection of intake pipe has the shield, the other end of moisturizing pump is connected with the blast pipe, and the blast pipe runs through the top of pre-heater body and is connected with the inner tube, the surface mounting of blast pipe has the control valve, the condensate water subassembly is installed to the inboard of pre-heater body, and the outlet is installed to the side of pre-heater body.

Preferably, through holes are uniformly formed in the side surfaces of the dust cover.

Preferably, a filter screen is arranged in the dust cover.

Preferably, the end parts of the dust cover and the air inlet pipe are in threaded connection.

Preferably, the inner tube is arranged in a shape of a Chinese character kou.

Preferably, the inner surface of the inner tube is uniformly provided with air nozzles.

Preferably, the air jet is inclined, and the air jet is symmetrically arranged on the surface of the inner pipe.

Preferably, the inner tubes are uniformly arranged in the preheater body, four corners between two groups of connected inner tubes are communicated through connecting tubes, and the inner tubes and the preheating tubes are arranged in a staggered mode.

Preferably, the condensate water drainage assembly comprises a water guide plate, the water guide plate is fixedly arranged at the top of the preheater body and is obliquely arranged, and a water drainage rod is uniformly fixed below the end part of the water guide plate.

Preferably, a water stop plate is fixedly arranged in the preheater body and positioned at the side of the inner tube.

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

(1) Through the use of the air supplementing assembly, the gas flow of the internal flue gas can be quickened, the obstruction of elements in the interior of the preheater is avoided, the efficiency of the flow of the flue gas is reduced, the adhesion of soot in the flue gas to a metal wall is further reduced, and the dust accumulation and hardening amount in the interior of the preheater is reduced;

(2) Through the use of drainage comdenstion water subassembly, can be at the top comdenstion water that condenses and sulphuric acid liquid can be through the drain bar drainage of the guide plate lower extreme of slope form to the below, conveniently drink comdenstion water to drink sulphuric acid liquid and discharge from the outlet through the separation of water proof plate, and then effectively avoid comdenstion water and sulphuric acid liquid and deposition contact.

Drawings

FIG. 1 is a schematic elevational view of the present utility model;

FIG. 2 is a schematic view of the rear cross-sectional structure of the present utility model;

FIG. 3 is a schematic side cross-sectional view of the present utility model;

FIG. 4 is a schematic view of the connection structure between the inner tube and the connecting tube according to the present utility model.

In the figure:

1. a preheater body; 2. a top base; 3. an air inlet; 4. an air outlet; 5. a preheating tube; 6. an air supplementing assembly; 601. a make-up pump; 602. an air inlet pipe; 603. a dust cover; 604. a filter screen; 605. an exhaust pipe; 606. a control valve; 607. an inner tube; 608. a connecting pipe; 609. an air jet; 7. a condensed water discharging assembly; 701. a water guide plate; 702. a water discharging rod; 703. a water-stop plate; 8. and a water outlet.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a pre-heater anticorrosion device, includes pre-heater body 1, preheating pipe 5 and outlet 8, and footstock 2 is installed to the upper end of pre-heater body 1, and air intake 3 is installed to the one end of pre-heater body 1, and air exit 4 is installed to the other end of pre-heater body 1, and preheating pipe 5 is installed to the internally mounted of pre-heater body 1, and air make-up subassembly 6 is installed to the top of pre-heater body 1.

Under some embodiments, make-up air subassembly 6 include make-up air pump 601, make-up air pump 601 fixed mounting is in the top of preheater body 1, and make-up air pump 601 one end is connected with intake pipe 602, intake pipe 602's end connection has shield 603, the through-hole has evenly been seted up to shield 603's side surface, and shield 603's internally mounted has filter screen 604, shield 603 is threaded connection with intake pipe 602's tip, make things convenient for shield 603's installation and shield 603 inside filter screen 604's use, the convenience is to the filtration of entering gas.

Under some embodiments, the other end of the air supplementing pump 601 is connected with an exhaust pipe 605, the exhaust pipe 605 penetrates through the top of the preheater body 1 and is connected with an inner pipe 607, a control valve 606 is installed on the surface of the exhaust pipe 605, the inner pipe 607 is arranged in a shape like a Chinese character 'kou', air nozzles 609 are uniformly installed on the inner surface of the inner pipe 607, preferably, the air nozzles 609 are arranged in an inclined mode, and the air nozzles 609 are symmetrically arranged on the surface of the inner pipe 607, so that air is conveniently injected into the interior, and the flow of air in the preheater body 1 is quickened.

Wherein, the inner pipes 607 are uniformly arranged in the preheater body 1, four corners between two groups of connected inner pipes 607 are communicated through connecting pipes 608, the inner pipes 607 and the preheating pipes 5 are arranged in a staggered way, so that the air blowing flow in the inner part is convenient, and meanwhile, the liquid avoids the adhesion of smoke dust on the preheating pipes 5.

Referring to fig. 1-4, as an embodiment, the inner side of the preheater body 1 is provided with a condensate drain assembly 7, and a side surface of the preheater body 1 is provided with a drain outlet 8, and in some embodiments, the condensate drain assembly 7 includes a water guide plate 701, the water guide plate 701 is fixedly installed at the top of the preheater body 1, the water guide plate 701 is inclined, and a drain bar 702 is uniformly fixed below the end portion of the water guide plate 701.

In some embodiments, the water stop 703 is fixedly mounted on the inner side of the inner pipe 607 of the preheater body 1, so that the condensed water and the sulfuric acid liquid can be conveniently discharged to one side of the preheater body 1 through the inclined water guide 701, and the condensed water and the sulfuric acid liquid can be discharged from the water outlet 8.

Working principle:

when the device is used, be connected with the flue gas pipeline of heating furnace, when using, the inside preheating pipe 5 of accessible pre-heater body 1 preheats inside air, when using, the accessible opens the air supplementing pump 601 on this air supplementing subassembly 6 for air supplementing pump 601 passes through blast pipe 605 in the case inner tube 607 exhaust, make gas spout in the air jet 609 of inner tube 607 surface, the gas flow of inside flue gas is conveniently accelerated, reduce the dust adhesion in the flue gas on inside preheating pipe 5, install shield 603 on this air supplementing pump 601 tip intake pipe 602, the inside of shield 603 is provided with filter screen 604, can conveniently get into the filtration of gas.

The top of the inner side of the preheater body 1 is provided with the condensate water discharging assembly 7, condensate water and sulfuric acid liquid in the preheater body 1 can be adhered to the inclined water guide plate 701 at the top of the inner side of the preheater body 1, so that the condensate water and the sulfuric acid liquid can drain water through the drain rod 702 at the end part of the water guide plate 701, the water is isolated at one side in the preheater body 1 under the barrier of the water stop plate 703, and the drain of the condensate water and the sulfuric acid liquid is facilitated through the use of the drain outlet 8 at the side surface of the preheater body 1.

The above is the principle of use of the pre-heater anti-corrosion device.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (10)

1. The utility model provides an anticorrosive device of pre-heater, includes pre-heater body (1), preheating pipe (5) and outlet (8), its characterized in that: footstock (2) are installed to the upper end of pre-heater body (1), and air intake (3) are installed to the one end of pre-heater body (1), air exit (4) are installed to the other end of pre-heater body (1), internally mounted of pre-heater body (1) has preheating pipe (5), and installs moisturizing subassembly (6) in the top of pre-heater body (1), moisturizing subassembly (6) include moisturizing pump (601), moisturizing pump (601) fixed mounting is in the top of pre-heater body (1), and moisturizing pump (601) one end is connected with intake pipe (602), the end connection of intake pipe (602) has shield (603), the other end of moisturizing pump (601) is connected with blast pipe (605), and blast pipe (605) run through the top of pre-heater body (1) and are connected with inner tube (607), surface mounting of blast pipe (605) has control valve (606), condensate water discharging subassembly (7) are installed to the inboard of pre-heater body (1), and side-mounting has outlet (8) of pre-heater body (1).

2. A preheater corrosion protection device according to claim 1, wherein: through holes are uniformly formed in the side surfaces of the dustproof cover (603).

3. A preheater corrosion protection device according to claim 1, wherein: a filter screen (604) is arranged in the dustproof cover (603).

4. A preheater corrosion protection device according to claim 1, wherein: the dustproof cover (603) is in threaded connection with the end part of the air inlet pipe (602).

5. A preheater corrosion protection device according to claim 1, wherein: the inner tube (607) is arranged in a shape like a Chinese character 'kou'.

6. A preheater corrosion protection device according to claim 5, wherein: the inner surface of the inner pipe (607) is uniformly provided with air nozzles (609).

7. The preheater corrosion protection device of claim 6, wherein: the air jet ports (609) are arranged in an inclined mode, and the air jet ports (609) are symmetrically arranged on the surface of the inner pipe (607).

8. A preheater corrosion protection device according to claim 1, wherein: the inner pipes (607) are uniformly arranged in the preheater body (1), four corners between two groups of connected inner pipes (607) are communicated through connecting pipes (608), and the inner pipes (607) and the preheating pipes (5) are arranged in a staggered mode.

9. A preheater corrosion protection device according to claim 1, wherein: the condensate water drainage assembly (7) comprises a water guide plate (701), wherein the water guide plate (701) is fixedly arranged at the top of the preheater body (1), the water guide plate (701) is obliquely arranged, and a drain rod (702) is uniformly fixed below the end part of the water guide plate (701).

10. A preheater corrosion protection device according to claim 1, wherein: a water stop plate (703) is fixedly arranged at the side of the inner tube (607) inside the preheater body (1).