CN217425144U

CN217425144U - Experimental device for burn living beings simulation corrosive atmosphere

Info

Publication number: CN217425144U
Application number: CN202221031947.5U
Authority: CN
Inventors: 梁瀚钊; 蓝家宏; 蓝焱; 林庆宇; 覃健彬; 甘若谷; 潘智; 谭雄健; 陈思诗; 韦炳聪; 李志刚
Original assignee: Guangxi Special Equipment Inspection and Research Institute
Current assignee: Guangxi Special Equipment Inspection and Research Institute
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-09-13
Anticipated expiration: 2032-04-29

Abstract

The utility model discloses an experimental device for simulating corrosive atmosphere by burning biomass, which comprises a gas production system, a connecting pipe, a conveying pipe, a corrosion system and a control cabinet for adjusting temperature; the gas production system comprises an air compressor, a gas storage tank, a gas inlet pipe, a vertical boiler, a screw feeder, a feed pipe, a cyclone separator, a dust remover, a dust storage tank and a gas outlet pipe; the corrosion system comprises a horizontal boiler, a gas analyzer and a tail gas treatment device. This experimental apparatus not only can directly produce corrosive gas through burning living beings, can also simulate different corrosive atmospheres through the kind that changes experiment temperature, air flow and feeding for corrosive atmosphere in the experiment more is close biomass boiler's corrosive environment, so that the experimental result that obtains is truer accurate, conveniently finds the root cause of corruption.

Description

Experimental device for burn living beings simulation corrosive atmosphere

Technical Field

The utility model relates to a biomass boiler field specifically is an experimental apparatus for burn living beings simulation corrosive atmosphere.

Background

In China, biomass corrosion at high temperature is a common problem of the current biomass power plant and is also a main reason for influencing the service life of a biomass boiler.

In order to prolong the service life of the biomass boiler and reduce the boiler shutdown frequency caused by corrosion, a biomass corrosion experiment at a high temperature is widely researched. The mechanism of biomass corrosion at high temperature is complex and various, so that multiple experiments are needed to find out the root cause of corrosion, and the medicine is applied according to the symptoms, so that targeted preventive measures can be provided for different corrosion mechanisms. However, it is not feasible to perform experiments directly on a boiler burning biomass, which affects the safe operation of the boiler, so at present, most of the experiments simulate a corrosive environment through gas distribution or a corrosive environment carried by gas, but both of the two methods are greatly different from the corrosive environment under the combustion of biomass, thereby causing errors in experimental results.

Therefore, an experimental device for simulating corrosive atmosphere by burning biomass needs to be designed, so that the corrosive atmosphere in the experiment is closer to the corrosive environment of a biomass boiler, and the obtained experimental result is more real and accurate.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the experimental device for simulating the corrosive atmosphere by burning the biomass is provided, so that the corrosive atmosphere in the experiment is closer to the corrosive environment of a biomass boiler, and the obtained experimental result is more real and accurate.

In order to solve the technical problem, the utility model adopts the following technical scheme:

an experimental device for simulating corrosive atmosphere by burning biomass comprises a gas production system, a connecting pipe, a conveying pipe, a corrosion system and a control cabinet for adjusting temperature;

the gas production system comprises an air compressor, a gas storage tank, a gas inlet pipe, a vertical boiler, a screw feeder, a feed pipe, a cyclone separator, a dust remover, a dust storage tank and a gas outlet pipe, wherein the air compressor and the gas storage tank are connected through a connecting pipe; one end of the air inlet pipe is communicated with the air storage tank through a connecting pipe, the other end of the air inlet pipe is communicated with the air inlet end of the vertical boiler, and the connecting pipe is provided with a ball valve and a rotor flow meter; the screw feeder is communicated with the lower part of the vertical boiler through a feeding pipe; the upper part of the vertical boiler is communicated with the inlet end of the cyclone separator through a conveying pipe, the outlet end of the cyclone separator is communicated with the inlet end of the dust remover through the conveying pipe, and the outlet end of the dust remover is communicated with the air outlet pipe through the conveying pipe; the ash storage tank is communicated with the cyclone separator;

the corrosion system comprises a horizontal boiler, a gas analyzer and a tail gas treatment device, three connecting pipes are communicated with an air outlet pipe, the first connecting pipe is communicated with the air inlet end of the horizontal boiler, and a needle valve and a rotor flow meter are arranged on the connecting pipe; the second connecting pipe is communicated with the gas analyzer and is provided with a needle valve; the third connecting pipe is communicated with the tail gas treatment device; the air outlet end of the horizontal boiler can be communicated with a tail gas treatment device through a connecting pipe;

heating resistors are arranged in the vertical boiler and the horizontal boiler, and the control cabinet is electrically connected with the heating resistors.

As a further improvement of the technical scheme:

and a bed material adding pipe communicated with the inside of the vertical boiler is arranged on the side wall of the vertical boiler, and bed materials are added into the vertical boiler through the bed material adding pipe so as to establish initial material circulation. The included angle between the bed material adding pipe and the vertical boiler is 45 ⁰ And the bed materials can conveniently and smoothly slide to the bottom of the vertical boiler.

Further, the vertical boiler is composed of a reducer pipe and pipes fixed to both ends of the reducer pipe. Because the particle diameter of the bed material has certain gradient, the vertical boiler has pipe diameters with different sizes, and certain fluidization velocity gradient can be ensured when air passes through sections with different sizes, so that large-particle bed material or biomass particles are prevented from being deposited at the bottom of the vertical boiler.

Furthermore, end covers are arranged on the bed material adding pipe and the vertical boiler.

Furthermore, the screw feeder is connected with the feeding pipe through a flange. Convenient dismantlement and installation.

The air inlet pipe is connected with the vertical boiler through the flange, the air inlet pipe is convenient to detach and replace, the steel wire mesh is arranged on the flange and is equivalent to an air distribution plate, and the effect of uniform pressure is achieved so as to maintain the stability in the vertical boiler.

The utility model has the advantages that:

the utility model comprises a gas production system, a connecting pipe, a conveying pipe, a corrosion system and a control cabinet for adjusting temperature; the gas production system comprises an air compressor, a gas storage tank, a gas inlet pipe, a vertical boiler, a screw feeder, a feed pipe, a cyclone separator, a dust remover, a dust storage tank and a gas outlet pipe; the corrosion system comprises a horizontal boiler, a gas analyzer and a tail gas treatment device. This experimental apparatus not only can directly produce corrosive gas through burning living beings, can also simulate different corrosive atmospheres through the kind that changes experiment temperature, air flow and feeding for corrosive atmosphere in the experiment is more close biomass boiler's corrosive environment, so that the experimental result that obtains is truer accurate, conveniently finds the root cause of corruption.

Drawings

Fig. 1 is a schematic connection diagram of the experimental apparatus of the present invention.

The reference numbers in the figures are: 1. an air compressor; 2. a gas storage tank; 3. a ball valve; 4. a rotameter; 5. an air inlet pipe; 6. a feeding pipe; 7. a screw feeder; 8. a bed material addition pipe; 9. a vertical boiler; 10. a heating resistor; 11. a cyclone separator; 12. a dust storage tank; 13. a dust remover; 14. an air outlet pipe; 15. a needle valve; 16. a horizontal boiler; 17. a gas analyzer; 18. a tail gas treatment device; 19. a control cabinet; 20. a connecting pipe; 21. a delivery pipe; 22. and (4) a flange.

Detailed Description

The present invention is described below with reference to the accompanying drawings, and the specific embodiments described herein are only used for illustration and explanation, and are not used for limiting the present invention, and the technical solutions of the present invention are not modified or improved by those skilled in the art without departing from the spirit of the present invention, and all should fall into the protection scope of the present invention.

As shown in fig. 1, the experimental apparatus for simulating corrosive atmosphere by burning biomass of the present embodiment includes a gas generating system, a connecting pipe 20, a conveying pipe 21, a corrosion system, and a control cabinet 19 for adjusting temperature.

Specifically, the gas production system comprises an air compressor 1, a gas storage tank 2, a gas inlet pipe 5, a vertical boiler 9, a screw feeder 7, a gas inlet pipe 6, a cyclone separator 11, a dust remover 13, a dust storage tank 12 and a gas outlet pipe 14, wherein the vertical boiler 9 consists of a reducer pipe and pipes fixed at two ends of the reducer pipe, a bed material adding pipe 8 communicated with the inside of the vertical boiler 9 is arranged on the side wall of the vertical boiler 9, and an included angle between the bed material adding pipe 8 and the vertical boiler 9 is 45 degrees ⁰ . The bed material adding pipe 8 and the vertical boiler 9 are both provided with end covers.

Wherein, the air compressor 1 and the air storage tank 2 are connected through a connecting pipe 20; one end of the air inlet pipe 5 is communicated with the air storage tank 2 through a connecting pipe 20, the other end of the air inlet pipe is communicated with the air inlet end of the vertical boiler 9, a ball valve 3 and a rotor flow meter 4 are arranged on the connecting pipe 20, the air inlet pipe 5 is connected with the vertical boiler 9 through a flange 22, and a steel wire mesh is arranged on the flange 22. The screw feeder 7 is communicated with the lower part of the vertical boiler 9 through a feeding pipe 6, and the screw feeder 7 is connected with the feeding pipe 6 through a flange 22. The upper part of the vertical boiler 9 is communicated with the inlet end of the cyclone separator 11 through a conveying pipe 21, the outlet end of the cyclone separator 11 is communicated with the inlet end of the dust remover 13 through the conveying pipe 21, the outlet end of the dust remover 13 is communicated with the air outlet pipe 14 through the conveying pipe 21, and the ash storage tank 12 is communicated with the cyclone separator 11.

Specifically, the corrosion system comprises a horizontal boiler 16, a gas analyzer 17 and a tail gas treatment device 18, three connecting pipes 20 are communicated with an air outlet pipe 14, the first connecting pipe 20 is communicated with the air inlet end of the horizontal boiler 16, and a needle valve 15 and a rotor flow meter 4 are arranged on the connecting pipe 20; a second connecting pipe 20 is communicated with the gas analyzer 17, and the needle valve 15 is arranged on the second connecting pipe 20; the third connecting pipe 20 is communicated with the tail gas treatment device 18; the outlet end of the horizontal boiler 16 may also be in communication with a tail gas treatment device 18 via a connecting pipe 20.

More specifically, the vertical boiler 9 and the horizontal boiler 16 are both provided with heating resistors 10, and the control cabinet 19 is electrically connected with the heating resistors 10.

When the experimental device is used for experiments, firstly, molded biomass is used as fuel, the molded biomass is crushed and sieved by a 100-120-mesh sieve to obtain the biomass fuel for the experiments, and the biomass fuel is poured into the screw feeder 7. The river sand obtained by wide screening is used as bed material and is poured into the bottom of a vertical boiler 9 through a bed material adding pipe 8. Then, a sample to be subjected to a corrosion experiment is placed in the horizontal boiler 16, a needle valve 15 in a corrosion system is in a closed state, the temperature in the vertical boiler 9 and the horizontal boiler 16 is adjusted through the control cabinet 19 until the temperature reaches the experiment temperature, at this time, the air compressor 1 can be started, air enters the vertical boiler 9 through the air inlet pipe 5, the temperature of the vertical boiler 9 is reduced after the air is introduced, when the temperature rises to the experiment temperature again, the switch of the screw feeder 7 can be started, fuel is added into the vertical boiler 9, the vertical boiler 9 starts to burn the fuel, substances generated in the burning process sequentially pass through the cyclone separator 11, the dust remover 13 and the air outlet pipe 14, at this time, the needle valve 15 on a connecting pipe 20 connected with the gas analyzer 17 is opened firstly, the gas enters the gas analyzer 17 firstly, and when the gas analyzer 17 shows that the components of the gas tend to be stable, the needle valve 15 of the connection pipe 20 connected to the horizontal boiler 16 was opened and the corrosion test was started. This experimental apparatus still can simulate different corrosive atmospheres through the kind that changes experiment temperature, air flow and feeding, more is close biomass boiler's corrosive environment for the experimental result is more true and close.

Claims

1. The utility model provides an experimental apparatus for burn living beings simulation corrosive atmosphere which characterized in that: comprises a gas production system, a connecting pipe (20), a conveying pipe (21), a corrosion system and a control cabinet (19) for adjusting temperature;

the gas production system comprises an air compressor (1), a gas storage tank (2), a gas inlet pipe (5), a vertical boiler (9), a screw feeder (7), a feed pipe (6), a cyclone separator (11), a dust remover (13), a dust storage tank (12) and a gas outlet pipe (14), wherein the air compressor (1) and the gas storage tank (2) are connected through a connecting pipe (20); one end of the air inlet pipe (5) is communicated with the air storage tank (2) through a connecting pipe (20), the other end of the air inlet pipe is communicated with the air inlet end of the vertical boiler (9), and the connecting pipe (20) is provided with a ball valve (3) and a rotor flowmeter (4); the screw feeder (7) is communicated with the lower part of the vertical boiler (9) through a feeding pipe (6); the upper part of the vertical boiler (9) is communicated with the inlet end of the cyclone separator (11) through a conveying pipe (21), the outlet end of the cyclone separator (11) is communicated with the inlet end of the dust remover (13) through the conveying pipe (21), and the outlet end of the dust remover (13) is communicated with the air outlet pipe (14) through the conveying pipe (21); the ash storage tank (12) is communicated with the cyclone separator (11);

the corrosion system comprises a horizontal boiler (16), a gas analyzer (17) and a tail gas treatment device (18), three connecting pipes (20) are communicated on the gas outlet pipe (14), the first connecting pipe (20) is communicated with the gas inlet end of the horizontal boiler (16), and a needle valve (15) and a rotor flow meter (4) are arranged on the connecting pipe (20); the second connecting pipe (20) is communicated with the gas analyzer (17), and a needle valve (15) is arranged on the second connecting pipe (20); the third connecting pipe (20) is communicated with the tail gas treatment device (18); the air outlet end of the horizontal boiler (16) can be communicated with a tail gas treatment device (18) through a connecting pipe (20);

heating resistors (10) are arranged in the vertical boiler (9) and the horizontal boiler (16), and the control cabinet (19) is electrically connected with the heating resistors (10).

2. The experimental facility for simulating corrosive atmosphere by burning biomass according to claim 1, characterized in that: the side wall of the vertical boiler (9) is provided with a bed material adding pipe (8) communicated with the inside of the vertical boiler (9), and the included angle between the bed material adding pipe (8) and the vertical boiler (9) is 45 degrees.

3. The experimental facility for simulating corrosive atmosphere by combusting biomass according to claim 2, wherein: the vertical boiler (9) consists of a reducer pipe and pipes fixed at two ends of the reducer pipe.

4. The experimental facility for simulating corrosive atmosphere by combusting biomass according to claim 3, wherein: and end covers are arranged on the bed material adding pipe (8) and the vertical boiler (9).

5. The experimental facility for simulating corrosive atmosphere by burning biomass according to claim 4, wherein: the screw feeder (7) is connected with the feeding pipe (6) through a flange (22).

6. The experimental facility for simulating corrosive atmosphere by combusting biomass according to claim 5, wherein: the air inlet pipe (5) is connected with the vertical boiler (9) through a flange (22), and a steel wire mesh is arranged on the flange (22).