CN215294857U

CN215294857U - Corner tube type waste heat boiler

Info

Publication number: CN215294857U
Application number: CN202120933379.7U
Authority: CN
Inventors: 杨承伟; 刘冰
Original assignee: Shanghai Sifang Boiler Group Engineering System Co ltd
Current assignee: Shanghai Sifang Boiler Group Engineering System Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-12-24
Anticipated expiration: 2031-04-30

Abstract

The utility model discloses an angle pipe formula exhaust-heat boiler, include: the boiler comprises a boiler barrel, wherein four descending pipes are arranged around the boiler barrel, the top ends of the descending pipes are connected with an upper collecting box and four lower collecting boxes, the bottom ends of the descending pipes are connected with a lower collecting box, an evaporation heating surface is connected between the upper collecting box and the lower collecting box, the top of the upper collecting box is connected with a top communicating pipe, the top communicating pipe is connected with the boiler barrel, the evaporation heating surface comprises a radiation evaporation section, a convection evaporation section and a superheater arranged at the bottom end inside the convection evaporation section, the upper ends of the radiation evaporation section and the convection evaporation section are respectively provided with a flue gas inlet and a flue gas outlet, and the lower end of the radiation evaporation section is communicated with the lower end of the convection evaporation section. The utility model has the advantages of simple and reasonable structure, whole device supports through downtake all around, and compact structure has realized carrying out efficient heat recovery to waste gas, and the evaporation receives the hot side and adopts the diaphragm type water-cooled wall, and whole leakproofness is good, has reduced environmental pollution simultaneously.

Description

Corner tube type waste heat boiler

Technical Field

The utility model relates to a boiler technical field especially relates to an angle tube formula exhaust-heat boiler.

Background

Energy conservation is one of key factors capable of sustainable development in a country, and if the traditional energy utilization mode is adhered to and the resources cannot be effectively recycled, the whole resource environment of the society is aggravated and rapid energy exhaustion is caused. According to reliable data, the consumption of industrial energy in China occupies the most share of the total cost, the effective utilization rate of the energy is only about three, and the cost expenditure is much higher than that of developed countries in Europe, so that the popularization of energy-saving equipment is a necessary measure in consideration of economic benefit. The shortage of energy is a serious examination facing the world at present, the development is pursued under such a large background, the development of new energy is one aspect, and more importantly, the development of new energy is completed in the aspect of energy conservation.

Enterprises cannot keep away from steam boilers, and the fuel cost of the boilers is a very large expenditure. In recent years, with the dramatic increase in the prices of various energy sources, the selection of boilers has started to give greater emphasis to the operating costs thereof. In the industrial processes of smelting, power generation and the like, a large amount of high-temperature flue gas is generated, so that the environment is polluted and energy is wasted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an angle tube type exhaust-heat boiler realizes carrying out efficient heat recovery to the high temperature flue gas, and it is extravagant to reduce the energy, realizes carrying out effectual dust removal to the flue gas simultaneously, reduces environmental pollution.

In order to solve the technical problem, the utility model provides an angle tube type exhaust-heat boiler, include: the boiler comprises a boiler barrel, wherein four descending pipes are arranged around the boiler barrel, the top ends of the descending pipes are connected with an upper collecting box and four lower collecting boxes, the bottom ends of the descending pipes are connected with a lower collecting box, an evaporation heating surface is connected between the upper collecting box and the lower collecting box, the top of the upper collecting box is connected with a top communicating pipe, the top communicating pipe is connected with the boiler barrel, the evaporation heating surface comprises a radiation evaporation section, a convection evaporation section and a superheater arranged at the bottom end inside the convection evaporation section, the upper ends of the radiation evaporation section and the convection evaporation section are respectively provided with a flue gas inlet and a flue gas outlet, and the lower end of the radiation evaporation section is communicated with the lower end of the convection evaporation section.

Furthermore, the evaporation heating surface is of a membrane water-cooled wall structure.

Furthermore, the bottom of the radiation evaporation section and the bottom of the convection evaporation section are both communicated with ash falling buckets.

Furthermore, soot blowers are arranged in the radiation evaporation section and the convection evaporation section.

Through the technical scheme, the utility model discloses following beneficial effect has:

the utility model has the advantages of simple and reasonable structure, whole device supports through downtake all around, and compact structure through the evaporation heating surface that comprises radiation evaporation section, convection evaporation section and over heater, has realized carrying out efficient heat recovery to waste gas, and the evaporation heating surface adopts the diaphragm type water-cooling wall, and whole leakproofness is good, simultaneously the utility model discloses a setting of soot blower and ash falling bucket realizes removing dust in advance before discharging to the smoke and dust in the waste gas, has reduced environmental pollution.

Drawings

Fig. 1 is the overall structure schematic diagram of the corner tube type exhaust-heat boiler of the utility model.

Detailed Description

The corner tube waste heat boiler of the present invention will now be described in greater detail with reference to the schematic drawings, in which preferred embodiments of the invention are shown, it being understood that those skilled in the art may modify the invention described herein while still achieving the advantageous effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.

The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

As shown in FIG. 1, the embodiment of the utility model provides an angle tube type exhaust-heat boiler, include: boiler barrel 1, boiler barrel 1 is provided with four downtake 2 all around, four 2 tops of downtake are connected with collection case 3 jointly, just four 2 bottom of downtake are connected with down collection case 4 jointly, be connected with evaporation heating surface 5 between last collection case 3 and the lower collection case 4, it is connected with top communicating pipe 6 to go up collection case 3 top, top communicating pipe 6 is connected with boiler barrel 1, evaporation heating surface 5 includes radiation evaporation section 51, convection evaporation section 52 and sets up the over heater 53 in the inside bottom of convection evaporation section 52, radiation evaporation section 51 and convection evaporation section 52 upper end are provided with flue gas inlet 511 and exhanst outlet 521 respectively, just radiation evaporation section 51 lower extreme and convection evaporation section 52 lower extreme are linked together.

In the present embodiment, the evaporation heating surface 5 has a membrane wall structure. The membrane type water-cooling wall is formed by welding flat steel and a pipe in a splicing manner to form an airtight tube panel. The membrane type water-cooled wall can ensure that the hearth has good tightness, the air leakage coefficient of the hearth can be obviously reduced for the negative pressure boiler, and the combustion working condition in the boiler is improved. It can increase the effective radiation heating area, thereby saving steel consumption.

In the present embodiment, the bottom of the radiation evaporation section 51 and the bottom of the convection evaporation section 52 are both communicated with a dust hopper 7. The dust falling hopper 7 is arranged to effectively collect dust in the flue gas.

In the present embodiment, soot blowers 8 are provided in both the radiant evaporation section 51 and the convection evaporation section 52. The dust removal effect and the efficiency of flue gas have effectively been promoted in the setting of soot blower 8.

When the device is used, flue gas is introduced into the radiation evaporation section 51 through the flue gas inlet 511, the flue gas enters the convection evaporation section 52 from the bottom after being treated in the radiation evaporation section 51 and then is discharged from the flue gas outlet 521 to enter a subsequent tail heating surface, the heat of the flue gas passing through the radiation evaporation section 51 and the flow evaporation section 52 is greatly recovered, meanwhile, under the action of the soot blower 8, a large amount of dust in the flue gas can be collected by the soot hopper 7, during the heat recovery process of the flue gas, a steam-water mixture rising in the evaporation heating surface 5 is pre-separated through the top communicating pipe 6, the separated steam enters the boiler barrel 1 for recycling, a part of the separated water enters the boiler barrel 1, and a part of the separated water enters the lower collecting box 4 through the descending pipe 2 and then enters the evaporation heating surface 5 again.

To sum up, for prior art, the utility model discloses, following advantage has:

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. An angle tube type exhaust heat boiler, characterized by comprising: the boiler comprises a boiler barrel, wherein four descending pipes are arranged around the boiler barrel, the top ends of the descending pipes are connected with an upper collecting box and four lower collecting boxes, the bottom ends of the descending pipes are connected with a lower collecting box, an evaporation heating surface is connected between the upper collecting box and the lower collecting box, the top of the upper collecting box is connected with a top communicating pipe, the top communicating pipe is connected with the boiler barrel, the evaporation heating surface comprises a radiation evaporation section, a convection evaporation section and a superheater arranged at the bottom end inside the convection evaporation section, the upper ends of the radiation evaporation section and the convection evaporation section are respectively provided with a flue gas inlet and a flue gas outlet, and the lower end of the radiation evaporation section is communicated with the lower end of the convection evaporation section.

2. The corner tube type waste heat boiler as claimed in claim 1, wherein the evaporation heating surface is of membrane wall construction.

3. The corner tube type waste heat boiler of claim 1, wherein the bottom of the radiation evaporation section and the bottom of the convection evaporation section are both communicated with ash falling buckets.

4. The corner tube type waste heat boiler of claim 1, wherein soot blowers are arranged in the radiation evaporation section and the convection evaporation section.