CN202303886U - Biomass organic heat carrier energy-saving environment-friendly boiler - Google Patents

Abstract

The utility model discloses an energy-saving and environment-friendly biomass organic heat carrier boiler, which comprises a heat carrier tube close to the furnace of the boiler, and a chain grate arranged under the furnace, which is located on the front wall of the boiler at the front side of the chain grate. A feed hopper is provided; a discharge port is provided on the lower wall of the boiler below the chain grate; an arc-shaped front arch is arranged on the front wall of the boiler, and the rear end of the arc-shaped front arch is recessed downward to form a smoke folding The front end is provided with a secondary air inlet; the rear wall of the boiler is provided with a rear arch, and the front end of the rear arch is provided with a secondary air inlet. The furnace structure of the coal-fired boiler of the utility model can fully adapt to the combustion form of biomass energy particle fuel, supports its full combustion, and has higher calorific value. Using heat-conducting oil instead of water as a heat carrier makes the boiler heat up more quickly, and does not require the boiler to generate high pressure, and the low-pressure boiler can heat the heat-conducting oil to a high temperature.

Description

A biomass organic heat carrier energy saving and environmental protection boiler

technical field

The utility model relates to a boiler, in particular to an energy-saving and environment-friendly biomass organic heat carrier boiler.

Background technique

With the development of science and technology, today's society has higher and higher requirements for environmental protection and energy saving of products. The current boilers generally use coal and oil as raw materials, which makes the production cost high, consumes non-renewable resources, and causes great environmental pollution.

Biomass pellet fuel is a major scientific achievement in combustion application. It uses waste crops such as straw, rice straw, firewood, wood chips, peanut shells, melon seed shells, sugar beet pulp, and bark to make granular fuel through crushing-mixing-extrusion-drying processes. It has the advantages of wide distribution of raw materials and advanced processing technology. The biomass energy pellets are known as green coal.

Most traditional biomass boilers use coal-fired boilers, or slightly modify their external structures. The inventor found in the research process of implementing the invention that the combustion flame of biomass pellet fuel is different from that of pulverized coal. Matter energy pellet fuel has the characteristics of high combustion volatility, fast gasification, and long combustion flame. The existing coal-fired boiler furnace structure cannot fully adapt to the combustion form of biomass energy pellet fuel and support its full combustion, resulting in combustion Insufficient, unsatisfactory burnout rate, and waste of energy.

Moreover, traditional boilers for boiling water are not easy to heat up quickly due to the large specific heat capacity of water, so it is even more difficult for biomass boilers to heat up quickly in a short period of time.

At the same time, in order to heat the heat carrier, the traditional boiler needs to use high pressure method to generate high temperature through high pressure. However, when the boiler generates high pressure, it will also cause great unsafe factors, because high pressure has higher requirements on the manufacturing structure of the boiler. High, if the quality of the boiler is slightly flawed, it will lead to tragedy.

Therefore, how to solve the above problems is an urgent problem to be solved by those skilled in the art.

Contents of the invention

In view of this, the utility model provides an energy-saving and environment-friendly biomass organic heat carrier boiler, which solves the problem that the boiler burns biomass and the boiler obtains a high-temperature heat carrier under the condition of low pressure.

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

An energy-saving and environment-friendly biomass organic heat carrier boiler, characterized in that it includes: a heat carrier tube close to the boiler furnace, and a chain grate arranged under the furnace, wherein:

A feed hopper is arranged on the boiler front wall at the front side of the chain grate;

A discharge port is arranged on the lower wall of the boiler below the chain grate;

An arc-shaped front arch is arranged on the front wall of the boiler, and the rear end of the arc-shaped front arch is recessed downward to form a folding smoke arch, and the front end is provided with a secondary air inlet;

A rear arch is arranged on the rear wall of the boiler, and a secondary air inlet is arranged at the front end of the rear arch.

The feed port can burn biomass pellet fuel.

The heat carrier tubes include the heat carrier tubes of the radiation heating surface of the furnace and the heat carrier tubes of the convection heating surface.

An air preheater is also included at the tail of the boiler.

The air preheater is used to heat the secondary air entering the boiler.

The heat carrier is heat transfer oil, which can be heated to high temperature in a low-pressure boiler.

The boiler provided by the utility model, through verification, has the following effects:

Compared with other technical solutions, the furnace structure of the coal-fired boiler of the present invention can fully adapt to the combustion form of biomass energy particle fuel, supports its full combustion, and has a higher calorific value. Therefore, the problems of insufficient combustion, unsatisfactory burnout rate and waste of energy are solved. In addition, the use of heat transfer oil instead of water as the heat carrier makes the boiler heat up more quickly, and does not require the boiler to generate high pressure. The low-pressure boiler can heat the heat transfer oil to a high temperature, further reducing the manufacturing requirements of the boiler and improving the safety of the boiler. It also makes the boiler more energy-saving and environmentally friendly, which meets the user's requirements.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is one of the structural schematic diagrams of the section of the boiler body provided by the embodiment of the present invention.

Fig. 2 is one of the structural schematic diagrams of the section of the boiler body provided by the embodiment of the present invention.

Detailed ways

The utility model provides an energy-saving and environment-friendly biomass organic heat carrier boiler, which solves the problem that the boiler burns biomass and obtains a high-temperature heat carrier under the condition of low pressure.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. The technical solutions described here are intended to enhance the understanding of the utility model, and can not be regarded as a limitation of the utility model, however, unnecessary details of the utility model, some well-known or common sense knowledge will not be repeated.

Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Embodiment one:

Please refer to Fig. 1, Fig. 1 is one of the structural schematic diagrams of the section of the boiler furnace body provided by the embodiment of the present invention.

An energy-saving and environment-friendly biomass organic heat carrier boiler, characterized in that it includes: a heat carrier tube close to the boiler furnace, and a chain grate arranged under the furnace, wherein:

A feed hopper 101 is arranged on the front wall of the boiler at the front side of the chain grate;

A discharge port is arranged on the lower wall of the boiler below the chain grate;

An arc-shaped front arch is arranged on the front wall of the boiler, and the rear end of the arc-shaped front arch is recessed downward to form a folding smoke arch, and the front end is provided with a secondary air inlet 141;

A rear arch is arranged on the rear wall of the boiler, and a secondary air inlet 141 is arranged at the front end of the rear arch.

The feed port can burn biomass pellet fuel.

The heat carrier tubes include heat carrier tubes 122 on the furnace radiation heating surface and heat carrier tubes 121 on the convection heating surface.

An air preheater 131 is also included at the tail of the boiler.

The air preheater 131 is used to heat the secondary air entering the boiler.

The heat carrier is heat transfer oil, which can be heated to high temperature in a low-pressure boiler.

The heat transfer oil enters through the oil inlet 111 and is finally output from the oil outlet 112 .

Please refer to Fig. 2, Fig. 2 is one of the structural schematic diagrams of the section of the boiler furnace body provided by the embodiment of the present invention.

The heat transfer oil enters through the oil inlet 111 and is finally output from the oil outlet 112 . The figure shows a side section of the furnace body.

To sum up, compared with other technical solutions, the utility model burns furfural residue or xylose residue more fully and has higher calorific value. Using heat conduction oil instead of water as the heat carrier makes the boiler heat up more quickly, and does not require the boiler to generate high pressure. The low pressure boiler can heat the heat conduction oil to high temperature, which further reduces the manufacturing requirements of the boiler and improves the safety of the boiler. The boiler is more energy-saving and environmentally friendly, which meets the user's requirements.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. an organic biomass heat carrier energy-saving, environmental protection boiler is characterized in that, comprising: with boiler furnace near the heat carrier pipe, and the traveling-grate stoker that is arranged at burner hearth below, wherein:

The boiler antetheca that is positioned at said traveling-grate stoker front side is provided with feed hopper;

The boiler lower wall that is positioned at said traveling-grate stoker below is provided with discharging opening;

Said boiler antetheca is provided with the arc face arch, and this arc face arch rear end is recessed to form folding cigarette arch downwards, and front end is provided with the secondary wind air inlet;

Said boiler rear wall is provided with rear arch, and this rear arch front end is provided with the secondary wind air inlet.

2. boiler according to claim 1 is characterized in that, said charging aperture incendivity biomass energy particle fuel.

3. boiler according to claim 1 is characterized in that, said heat carrier pipe comprises radiation of burner hearth heating surface heat carrier pipe and convection heating surface heat carrier pipe.

4. boiler according to claim 1 is characterized in that, also comprises an air preheater at said boiler tail.

5. boiler according to claim 4 is characterized in that, said air preheater is used to heat the secondary wind that gets into boiler.

6. boiler according to claim 1 is characterized in that, said heat carrier is a conduction oil, and said conduction oil can be heated to high temperature in low-pressure boiler.

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