CN115975690A - Fuel block and manufacturing method thereof - Google Patents

Abstract

The invention discloses a fuel block and a manufacturing method thereof, and particularly relates to the technical field of fuels. The fuel comprises pulverized coal, loess powder, calcium oxide, straw pieces and water. The fuel block of the invention has light weight, coal saving, easy ignition, quick ignition, time saving, long burning time, no pollution, cleanness and sanitation. The fuel block prepared by the method has the advantages of small investment, low cost, no environmental pollution, high yield and obvious market application value.

Description

Fuel block and manufacturing method thereof

Technical Field

The invention relates to the technical field of fuels, in particular to a fuel block and a manufacturing method thereof.

Background

Coal has a long history as a fuel, among such fuels. Coal is not the only constituent. Are the main components. Such as in coal combustion using additives. The coal content must be greater than 50%. While coal reserves are limited. There is always a depletion.

Second only to coal, oil and natural gas, biomass energy is on the 4 th of the total energy consumption in the world. Biomass materials such as straws, rice hulls, peanut shells, corncobs, oil tea shells, cottonseed hulls and the like have good combustibility, and according to expert prediction, biomass energy is very likely to become an important component of a future sustainable energy system, and various biomass alternative fuels produced by adopting a new technology account for more than 40% of the global total fuel consumption in the middle of the next century.

The history of using biomass as fuel by human beings can be traced back to the original society, people seem to forget the biomass fuel along with the rise of fossil fuel in recent times, however, with the exhaustion of the fossil fuel and the public understanding of the problems of air pollution, greenhouse gas effect and the like, people pay attention to new energy again, and the traditional energy of biomass is changed into environment-friendly new energy by technical means. In recent years, research on biomass as a novel fuel has been actively conducted, and it is a common practice to pulverize and compress wood waste having a relatively high calorific value into biomass particles or biomass briquette. However, the use of forest waste is only a very small part of biomass, and because of the shortage of forest resources, the use of forest waste as biomass fuel has certain limitations. In a large amount of biomass resources, mainly agricultural wastes such as straws of wheat, corn, rice and the like are burned by farmers even directly in the field after harvesting or before re-tillage every year, so that air pollution is caused, and solar energy converted through photosynthesis is wasted. At present, the reports have reported that the straws are extruded into high-density rod-shaped fuel after being chopped and dried by straw forming equipment, and the high-efficiency clean combustion is realized, so that the straws are effectively utilized.

Disclosure of Invention

Therefore, the invention provides a fuel block and a manufacturing method thereof, which aim to solve the problems that the existing coal block has large burning smoke, is not fully burnt and is easy to generate carbon monoxide poisoning and the like.

In order to achieve the above purpose, the invention provides the following technical scheme:

according to one aspect of the invention, a fuel block is provided, which comprises pulverized coal, loess powder, calcium oxide, straw pieces and water.

Further, the fuel block comprises the following raw materials in parts by weight: 90-110 parts of coal powder, 2-4 parts of loess powder, 20-40 parts of calcium oxide, 20-40 parts of crushed straw and 15-30 parts of water.

Further, the fuel block comprises the following raw materials in parts by weight: 100 parts of coal powder, 3 parts of loess powder, 30 parts of calcium oxide, 30 parts of crushed straw and 20 parts of water.

Further, the straw is crushed into corn straw, wheat straw, wood chip or fallen leaves.

According to another aspect of the present invention, there is provided a method for manufacturing a fuel block, comprising:

step one, preparing materials

Respectively drying and crushing coal powder, loess powder, calcium oxide and straw fragments for later use;

step two, mixing

Mixing pulverized coal loess powder, calcium oxide, straw pieces and water, and uniformly mixing to obtain a mixed raw material;

step three, briquetting

Briquetting and drying the mixed raw materials to obtain the required fuel block.

Further, in the first step, the crushing particle size is not more than 5mm.

Further, in the third step, the moisture content after drying is not higher than 5%.

The invention has the following advantages:

1. the weight is light: the weight is reduced due to the addition of crop stems.

2. Coal saving: adding crop stems to replace the amount of coal; meanwhile, the coal is not ignited when not used, and the common coal used for the old sealing (smoldering) fire is saved.

3. Easy ignition: is easier to ignite than common coal blocks.

4. Quick fire-burning and time-saving: once the fuel block is ignited, the temperature of the furnace mouth can quickly reach over 600 ℃, and the living needs can be met at any time.

5. The combustion time is long: the price of a fuel block is lower than that of a common coal block; the combustion can be carried out for about 30 minutes.

6. No pollution: the fuel block prepared by the invention can be fully combusted, and does not generate carbon monoxide, and the added chemical raw materials such as calcium oxide can effectively prevent the generation of sulfur dioxide, so that the fuel block is safe and reliable to use.

7. Cleaning and sanitation: the product can be carried by hands without coal ash to be stained on hands or clothes.

8. The fuel block prepared by the method has the advantages of small investment, low cost, no environmental pollution, high yield and obvious market application value.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The present embodiment provides a fuel block:

90 parts of coal powder, 4 parts of loess powder, 20 parts of calcium oxide, 40 parts of crushed straw and 30 parts of water.

The preparation method comprises the following steps:

respectively drying pulverized coal, loess powder, calcium oxide and straw pieces, and then crushing the pulverized coal, loess powder, calcium oxide and straw pieces to be not more than 5mm for later use;

step two, mixing

Mixing pulverized coal loess powder, calcium oxide, straw powder and water, and mixing to obtain mixed raw material;

step three, briquetting

Briquetting the mixed raw materials, and drying until the moisture content is not more than 5% to obtain the required fuel block.

Example 2

The present embodiment provides a fuel block:

100 parts of coal powder, 3 parts of loess powder, 30 parts of calcium oxide, 30 parts of crushed straw and 20 parts of water.

The preparation method comprises the following steps:

respectively drying pulverized coal, loess powder, calcium oxide and straw pieces, and then crushing the pulverized coal, loess powder, calcium oxide and straw pieces to be not more than 5mm for later use;

step two, mixing

Mixing pulverized coal loess powder, calcium oxide, straw pieces and water, and uniformly mixing to obtain a mixed raw material;

thirdly, briquetting

Briquetting the mixed raw materials, and drying until the water content is not more than 5% to obtain the required fuel block.

Example 3

The present embodiment provides a fuel block:

110 parts of coal powder, 2 parts of loess powder, 40 parts of calcium oxide, 20 parts of crushed straw and 15 parts of water.

The preparation method comprises the following steps:

respectively drying pulverized coal, loess powder, calcium oxide and straw pieces, and then crushing the pulverized coal, loess powder, calcium oxide and straw pieces to be not more than 5mm for later use;

step two, mixing

Mixing pulverized coal loess powder, calcium oxide, straw pieces and water, and uniformly mixing to obtain a mixed raw material;

thirdly, briquetting

Briquetting the mixed raw materials, and drying until the water content is not more than 5% to obtain the required fuel block.

Comparative example 1

This comparative example provides a fuel block which is identical to that of example 2 except that no calcium oxide is added.

Comparative example 2

This comparative example provides a fuel block which is identical to that of example 2 except that no straw pieces are added.

Experimental example 1

The results of the indexes of example 1, example 2 and example 3 in the present invention are shown in table 1.

Table 1 shows the specification parameters and performance indexes of biomass fuel briquettes produced by using the present invention and the economic indexes of the biomass fuel briquettes compared with those of common coal.

TABLE 1

As can be seen from Table 1, the fuel briquette of the present invention is less expensive, but not inferior to conventional coal.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (7)

1. A fuel block is characterized by comprising coal powder, loess powder, calcium oxide, straw pieces and water.

2. A fuel brick according to claim 1, wherein the fuel brick comprises the following parts of raw materials: 90-110 parts of coal powder, 2-4 parts of loess powder, 20-40 parts of calcium oxide, 20-40 parts of crushed straw and 15-30 parts of water.

3. A fuel brick according to claim 1, wherein the fuel brick comprises the following parts of raw materials: 100 parts of coal powder, 3 parts of loess powder, 30 parts of calcium oxide, 30 parts of crushed straw and 20 parts of water.

4. A fuel brick according to claim 1, characterized in that the straw is shredded corn stover, wheat straw, wood chips or fallen leaves.

5. A method of making a fuel block, comprising:

step one, preparing materials

Respectively drying pulverized coal, loess powder, calcium oxide and straw pieces, and then crushing for later use;

step two, mixing

Mixing pulverized coal loess powder, calcium oxide, straw pieces and water, and uniformly mixing to obtain a mixed raw material;

thirdly, briquetting

Briquetting and drying the mixed raw materials to obtain the required fuel block.

6. The method as claimed in claim 5, wherein in the first step, the pulverized particles have a diameter of not more than 5mm.

7. A method for making a fuel block as claimed in claim 5, wherein the moisture content after drying is no greater than 5% in step three.