CN218721377U

CN218721377U - Positive pressure waste heat boiler

Info

Publication number: CN218721377U
Application number: CN202222646723.1U
Authority: CN
Inventors: 张忠兵; 孟盘继; 高峰; 李新珠; 王丽芝
Original assignee: Inner Mongolia Datang Dingwang Chemical Co ltd
Current assignee: Inner Mongolia Datang Dingwang Chemical Co ltd
Priority date: 2022-10-09
Filing date: 2022-10-09
Publication date: 2023-03-24
Anticipated expiration: 2032-10-09

Abstract

The application provides a malleation exhaust-heat boiler, including boiler body and protective housing, boiler body is equipped with admission line and exhaust duct, the protective housing is seal structure, the protective housing cladding in on the boiler body, the admission line with exhaust duct passes the protective housing set up and with it is sealed to realize between the protective housing, the protective housing with be filled with gas between the boiler body, gaseous pressure is greater than external atmospheric pressure. The differential pressure of the inside and outside of the boiler body of the present application is reduced, thereby reducing the risk of leakage. In addition, because the differential pressure of the inner side and the outer side of the boiler body can be reduced, the operating pressure in the boiler body can be improved, and the heat efficiency is improved.

Description

Positive pressure waste heat boiler

Technical Field

The application relates to the technical field of waste heat boilers, in particular to a positive pressure waste heat boiler.

Background

The positive pressure waste heat boiler is a boiler in a positive pressure state in a boiler, the pressure in the boiler is greater than the external air pressure, and the smoke is in a positive pressure running state.

The problems that the traditional waste heat boiler often has the problems of dust accumulation on the heating surface, abrasion, poor sealing of the boiler, low thermal efficiency of the boiler and the like as described in the utility model patent with the publication number of CN213746679U, and the problems of low thermal efficiency are caused by the risks of leakage, poor sealing and the like of the positive pressure waste heat boiler.

SUMMERY OF THE UTILITY MODEL

The application provides a malleation exhaust-heat boiler, the differential pressure of the inside and outside of boiler body can reduce to the risk that the emergence was leaked has been reduced. In addition, because the differential pressure of the inner side and the outer side of the boiler body can be reduced, the operating pressure in the boiler body can be improved, and the heat efficiency is improved.

In order to solve the technical problem, the following technical scheme is adopted in the application:

the utility model provides a malleation exhaust-heat boiler, includes boiler body and protective housing, boiler body is equipped with admission line and exhaust duct, the protective housing is seal structure, the protective housing cladding in on the boiler body, the admission line with exhaust duct passes the protective housing setting and with realize sealing between the protective housing, the protective housing with be filled with gas between the boiler body, gaseous pressure is greater than external atmospheric pressure.

Compare in prior art, this malleation exhaust-heat boiler's boiler body's the outside cladding has the protective housing, and the protective housing is sealed to be filled with gas between protective housing and the boiler body, gaseous pressure is greater than external atmospheric pressure, consequently, the differential pressure of the inside and outside of boiler body can reduce, thereby has reduced the risk that takes place to leak. In addition, because the differential pressure of the inner side and the outer side of the boiler body can be reduced, the operating pressure in the boiler body can be improved, and the heat efficiency is improved.

In an embodiment of the application, the protective shell further comprises a steel support, the steel support comprises four upright posts and a plurality of cross beams, the four upright posts are uniformly distributed around the protective shell, the plurality of cross beams are connected between every two adjacent upright posts and are arranged in the vertical direction;

the outer wall of the protective shell is provided with a plurality of lifting lugs which are arranged in the vertical direction, and the lifting lugs are hoisted on the cross beam.

In an embodiment of the present application, the protective shell is divided into at least two sections in a vertical direction, and the protective shell is hermetically connected by welding.

In an embodiment of the application, the economizer of the boiler body is connected to the inner wall of the protective shell through a carrier beam, and expansion joints are arranged at two ends of the carrier beam.

In an embodiment of this application, the steel bracket is equipped with a plurality of maintenance platforms and a plurality of staircase, and is a plurality of the maintenance platform is arranged and is flushed with a plurality of along vertical direction the crossbeam, and is a plurality of the staircase intercommunication is a plurality of the maintenance platform is realized in order to arrive from ground the top of protective housing.

In an embodiment of the present application, the protective case is provided with a plurality of manholes, which are arranged in a vertical direction and correspond to the service platform.

In an embodiment of the present application, a refractory castable material is poured around the manhole.

In an embodiment of the application, the minimum distance between the protective casing and the boiler body is 500mm.

In an embodiment of the present application, the protective shell is made of Q235A.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following descriptions are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a positive pressure waste heat boiler provided in an embodiment of the present application;

FIG. 2 is a schematic front view of a positive pressure waste heat boiler according to another embodiment of the present application;

FIG. 3 is a schematic top view of a positive pressure waste heat boiler according to an embodiment of the present disclosure;

fig. 4 is a schematic structural view of a boiler body and a protective shell of the positive pressure waste heat boiler according to an embodiment of the present application;

fig. 5 is a schematic front view of a positive pressure waste heat boiler according to another embodiment of the present application.

Reference numerals:

100. a boiler body; 110. an air intake duct; 120. an exhaust duct; 130. a coal economizer; 140. a load beam; 150. an expansion joint; 200. a protective shell; 210. lifting lugs; 220. a manhole; 300. a steel bracket; 310. a column; 320. a cross beam; 330. overhauling the platform; 340. an escalator.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present application, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort also belong to the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Fig. 1 is a schematic structural diagram of a positive pressure waste heat boiler provided in an embodiment of the present application. Fig. 2 is a schematic front view of a positive pressure waste heat boiler according to another embodiment of the present application. Fig. 3 is a schematic top view of a positive pressure heat recovery boiler according to an embodiment of the present application. Fig. 4 is a schematic front view of a positive pressure waste heat boiler according to another embodiment of the present application. Fig. 5 is a schematic structural diagram of a boiler body and a protective shell of the positive pressure waste heat boiler provided in an embodiment of the present application.

The embodiment of the present application provides a positive pressure waste heat boiler, as shown in fig. 1, including a boiler body 100 and a protective casing 200, wherein the boiler body 100 is a place where reaction is performed, and the protective casing 200 is used for protecting the boiler body 100.

The boiler body 100 is provided with an inlet duct 110 for feeding reaction gas into the boiler body 100 and an outlet duct 120 for discharging gas generated by the reaction out of the boiler body 100.

The protective shell 200 is a sealing structure, that is, a sealed shell is formed, the protective shell 200 covers the boiler body 100, the air inlet duct 110 and the air outlet duct 120 penetrate through the protective shell 200 and are sealed with the protective shell 200, so that a sealed space is formed between the protective shell 200 and the boiler body 100. The space between the protective case 200 and the boiler body 100 is filled with gas having a pressure greater than the external air pressure. Certainly, an inflation interface should be arranged on the protective shell 200 to inflate the protective shell 200 with air to realize inflation. Generally, both air and nitrogen can be charged.

It should be noted that other pipes are provided on the boiler body 100 to connect with the external system, and these pipes also pass through the protective casing 200 and are sealed, and will not be described in detail herein.

Compared with the prior art, the boiler body 100 of the positive pressure waste heat boiler is covered with the protective shell 200, the protective shell 200 is sealed, and gas is filled between the protective shell 200 and the boiler body 100, and the pressure of the gas is greater than the external atmospheric pressure, so that the differential pressure between the inner side and the outer side of the boiler body 100 is reduced, and the risk of leakage is reduced. In addition, since the differential pressure between the inside and outside of the boiler body 100 can be reduced, the operating pressure in the boiler body 100 can be increased, and the thermal efficiency can be improved.

In some embodiments, as shown in fig. 2 and 3, the positive pressure waste heat boiler further includes a steel support 300, the steel support 300 includes four columns 310 and a plurality of beams 320, the four columns 310 are uniformly distributed around the protective shell 200, that is, are square, a plurality of beams 320 are connected between two adjacent columns 310, and the plurality of beams 320 are arranged along a vertical direction, so that the entire steel support 300 forms a substantially rectangular frame structure, the plurality of beams 320 form a layer-by-layer supporting structure, the outer wall of the protective shell 200 is provided with a plurality of lifting lugs 210 arranged along the vertical direction, and the plurality of lifting lugs 210 are lifted on the beams 320, thereby realizing lifting of the entire protective shell 200. The above structure can be understood that the protective case 200 wraps the boiler body 100, and the steel bracket 300 wraps the protective case 200.

In some embodiments, the protective case 200 is divided into at least two sections in a vertical direction, and the sealing connection is achieved by welding. Taking the division into two sections as an example, during construction, the lower half section can be wrapped on the lower part of the boiler body 100, then the upper half section is wrapped on the upper part of the boiler body 100, and is butted with the lower half section, then is welded, and finally is hoisted with the steel bracket 300.

It should be noted that the protective shell 200 is a structure with two hemispherical ends and a cylindrical middle, the whole protective shell 200 is a revolving body structure, no dead angle exists around the whole protective shell, and gas is uniformly distributed between the protective shell 200 and the boiler body 100, so that the protective shell 200 and the boiler body 100 are uniform in pressure bearing, uniform in stress and good in use effect.

In practical implementation, the protective case 200 may be divided into 6 to 8 sections, so that each section has a small length, and is convenient to process and install.

In some embodiments, as shown in fig. 4, the economizer 130 of the boiler body 100 is connected to the inner wall of the protective case 200 through a carrier beam 140, and expansion joints 150 are provided at both ends of the carrier beam 140. The expansion joint 150 is a flexible structure provided on the vessel shell or pipe to compensate for additional stresses due to temperature differences and mechanical vibrations. The economizer 130 is a device for recovering waste heat in the boiler body 100, and is generally disposed at the bottom of the boiler body 100, and the economizer 130 and the expansion joint 150 can be considered as forming a fixed whole, the economizer 130 is mounted on the protective shell 200 through the load beam 140 and the expansion joint 150, that is, the boiler body 100 is mounted on the protective shell 200, and the expansion joint 150 can absorb deformation of the boiler body 100 caused by expansion with heat and contraction with cold.

Of course, other positions of the boiler body 100 may be mounted on the protective shell 200 by means of the load beam 140 and the expansion joint 150.

In some embodiments, as shown in fig. 5, the steel bracket 300 is provided with a plurality of service platforms 330 and a plurality of stairs 340, the plurality of service platforms 330 are arranged in a vertical direction and flush with the plurality of cross beams 320, the plurality of stairs 340 are communicated with the plurality of service platforms 330 to reach the top of the protective case 200 from the ground, and different heights of the protective case 200 can be reached through the stairs 340 and the service platforms 330, so that the installation of the protective case 200 is facilitated.

In some embodiments, as shown in fig. 2, the protective shell 200 is provided with a plurality of manholes 220, the plurality of manholes 220 are arranged in a vertical direction and correspond to the service platform 330, and the service platform 330 and the manholes 220 can access the inside of the protective shell 200 to service the boiler body 100.

In practice, the position of the manhole 220 is not limited to this, and may be opened appropriately according to actual needs. Of course, in normal operation of the boiler body 100, the manhole 220 is sealed on the protective shell 200, so as to achieve sealing of the protective shell 200.

In some embodiments, a refractory castable material is poured around the manhole 220, so that the manhole 220 can withstand higher temperature, and thermal insulation is achieved.

In some embodiments, the minimum distance between the protective case 200 and the boiler body 100 is 500mm, so that the service person can easily move in entering the protective case 200.

In some embodiments, the protective case 200 is made of Q235A, which is easy to purchase and low in cost. And when the boiler body 100 is operated, the protective shell 200 is in a high-temperature state, has certain flexibility, and can adapt to the deformation caused by expansion with heat and contraction with cold. In particular, the wall thickness of the protective case 200 may be maintained at 8mm to 12 mm.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A positive pressure waste heat boiler, comprising:

the boiler comprises a boiler body, a heat exchanger and a heat exchanger, wherein the boiler body is provided with an air inlet pipeline and an exhaust pipeline;

the protective housing, the protective housing is seal structure, the protective housing cladding is in on the boiler body, the admission line with exhaust duct pass the protective housing setting and with realize sealed between the protective housing, the protective housing with be filled with gas between the boiler body, gaseous pressure is greater than external atmospheric pressure.

2. The positive pressure waste heat boiler according to claim 1, further comprising a steel support, wherein the steel support comprises four upright posts and a plurality of cross beams, the four upright posts are uniformly distributed around the protective shell, the plurality of cross beams are connected between every two adjacent upright posts and are arranged in the vertical direction;

3. The positive pressure waste heat boiler according to claim 1, wherein the protective shell is divided into at least two sections in the vertical direction, and the two sections are hermetically connected by welding.

4. The positive pressure waste heat boiler according to claim 1, wherein the economizer of the boiler body is connected to the inner wall of the protective shell through a carrier beam, and expansion joints are arranged at two ends of the carrier beam.

5. The positive pressure waste heat boiler of claim 2, wherein the steel support is provided with a plurality of maintenance platforms and a plurality of escalators, the plurality of maintenance platforms are arranged in a vertical direction and flush with the plurality of cross beams, and the plurality of escalators communicate with the plurality of maintenance platforms to reach the top of the protective shell from the ground.

6. The positive pressure waste heat boiler according to claim 5, wherein the protective shell is provided with a plurality of manholes, and the manholes are vertically arranged and correspond to the maintenance platform.

7. The positive pressure waste heat boiler of claim 6, wherein a refractory castable material is poured around the manhole.

8. The positive pressure waste heat boiler according to any one of claims 1 to 7, characterized in that the minimum distance between the protective shell and the boiler body is 500mm.

9. The positive pressure waste heat boiler according to any one of claims 1 to 7, wherein the protective shell is made of Q235A.